Include licenses on IfcOpenShell sub-utilities. See #1082.

As explained in
https://devtalk.blender.org/t/can-bpy-props-be-used-for-dynamic-lists/10130/11
Dynamic enums can crash Blender if container is not set using
at least a module-level variable.
Using global keyword is not mandatory but may help debugging

.github/workflows/ci-blenderbim-matrix.yml

@@ -3,7 +3,7 @@ name: Publish-blenderbim-multiplatform
 on:
   push:
     paths:
-      - 'src/ifcblenderexport/**'
+      - 'src/blenderbim/**'
       - '.github/workflows/ci-blenderbim-matrix.yml'
 
 env:
@@ -52,15 +52,15 @@ jobs:
         run: echo "::set-output name=date::$(date +'%y%m%d')"
       - name: Compile
         run: |
-          cp -r src/ifcblenderexport src/ifcblenderexport_${{ matrix.config.short_name }}_${{ matrix.pyver }} &&
-          cd src/ifcblenderexport_${{ matrix.config.short_name }}_${{ matrix.pyver }} &&
+          cp -r src/blenderbim src/blenderbim_${{ matrix.config.short_name }}_${{ matrix.pyver }} &&
+          cd src/blenderbim_${{ matrix.config.short_name }}_${{ matrix.pyver }} &&
           make dist PLATFORM=${{ matrix.config.short_name }} PYVERSION=${{ matrix.pyver }}
       - name: Upload Zip file to release
         uses: svenstaro/upload-release-action@v2
         with:
           repo_token: ${{ secrets.GITHUB_TOKEN }}
-          file: src/ifcblenderexport_${{ matrix.config.short_name }}_${{ matrix.pyver }}/dist/blender28-bim-${{steps.date.outputs.date}}-${{ matrix.pyver }}-${{ matrix.config.short_name }}.zip
+          file: src/blenderbim_${{ matrix.config.short_name }}_${{ matrix.pyver }}/dist/blender28-bim-${{steps.date.outputs.date}}-${{ matrix.pyver }}-${{ matrix.config.short_name }}.zip
           asset_name: blender28-bim-${{steps.date.outputs.date}}-${{ matrix.pyver }}-${{ matrix.config.short_name }}.zip
           tag: "blenderbim-${{steps.date.outputs.date}}"
           overwrite: true
-          body: "Package release blenderbim-${{steps.date.outputs.date}}"
+          body: "Daily developer testing build blenderbim-${{steps.date.outputs.date}}"

.gitignore

@@ -1,4 +1,11 @@
 # Dependency and build folders created by the build scripts
+/_build-vs2015-x64/
+/_deps-vs2015-x64-installed/
+/_build-vs2017-x64/
+/_deps-vs2017-x64-installed/
+/_build-vs2019-x64/
+/_deps-vs2019-x64-installed/
+/_deps/
 /deps*/
 /build*/
 /install*/
@@ -13,6 +20,10 @@ __pycache__
 # PyCharm files
 .idea
 
+#Virtual Env Files
+Pipfile
+Pipfile.lock
+
 # Docs
 /docs/output
 /docs/rst_files
@@ -23,3 +34,5 @@ __pycache__
 *.mo
 # Vim
 *.swp
+
+

.travis.yml

@@ -1,57 +1,67 @@
 language: cpp
 compiler: gcc
+cache: ccache
 os: linux
-dist: bionic
-sudo: required
-
-before_install:
-  - "sudo add-apt-repository -y ppa:freecad-community/ppa"
-  - sudo apt-get update -qq
-
+dist: focal
+addons:
+  apt:
+    update: true
+    packages:
+    - libboost-date-time-dev
+    - libboost-filesystem-dev
+    - libboost-iostreams-dev
+    - libboost-program-options-dev
+    - libboost-regex-dev
+    - libboost-system-dev
+    - libboost-thread-dev
+    - libocct-data-exchange-dev
+    - libocct-foundation-dev
+    - libocct-modeling-algorithms-dev
+    - libocct-modeling-data-dev
+    - libxml2-dev
+    - nlohmann-json3-dev
+    - opencollada-dev
+    - python3-all-dev
+    - python3-pip
+    - swig
 
+before_script:
+  - if [ $TRAVIS_OS_NAME == "linux" ]; then ccache -z; fi
+  
 install:
-  - |
-    sudo apt-get install -y \
-    libocct-data-exchange-dev libocct-foundation-dev libocct-modeling-algorithms-dev libocct-modeling-data-dev \
-    libboost-system-dev libboost-program-options-dev libboost-regex-dev libboost-thread-dev libboost-date-time-dev libboost-iostreams-dev libboost-filesystem-dev \
-    build-essential cmake python2.7 libpython2.7-dev swig zlib1g liblzma5 opencollada-dev wget apt-transport-https
-  - sudo mkdir -p /usr/include/json/nlohmann/
-  - sudo wget https://github.com/nlohmann/json/releases/download/v3.6.1/json.hpp -O /usr/include/json/nlohmann/json.hpp
-  # - sudo sh -c 'curl https://dl-ssl.google.com/linux/linux_signing_key.pub | apt-key add -'
-  # - sudo sh -c 'curl https://storage.googleapis.com/download.dartlang.org/linux/debian/dart_stable.list > /etc/apt/sources.list.d/dart_stable.list'
-  # - sudo apt-get update -qq && sudo apt-get install -y dart
-  # - export PATH=$PATH:/usr/lib/dart/bin:$HOME/.pub-cache/bin
-  # - git clone https://github.com/KhronosGroup/glTF-Validator && pushd glTF-Validator && pub get && pub global activate --source path ./ && popd
+  # for IDS
+  - python3 -m pip install xmlschema
 
 script:
   - pwd
-  - cd cmake
-  - mkdir build
-  - cd build
+  - mkdir build && cd build
   - |
     cmake \
+    -DCMAKE_C_COMPILER_LAUNCHER=ccache \
+    -DCMAKE_CXX_COMPILER_LAUNCHER=ccache \
     -DOCC_INCLUDE_DIR=/usr/include/opencascade \
     -DOCC_LIBRARY_DIR=/usr/lib/x86_64-linux-gnu \
-    -DPYTHON_LIBRARY=/usr/lib/python2.7/config-x86_64-linux-gnu/libpython2.7.so \
-    -DPYTHON_INCLUDE_DIR=/usr/include/python2.7 \
-    -DPYTHON_EXECUTABLE=/usr/bin/python2.7 \
-    -DLIBXML2_INCLUDE_DIR=/usr/include/libxml2 \
-    -DLIBXML2_LIBRARIES="/usr/lib/x86_64-linux-gnu/libxml2.so;/lib/x86_64-linux-gnu/libz.so.1;/lib/x86_64-linux-gnu/liblzma.so.5;/usr/lib/x86_64-linux-gnu/libicuuc.so.60;/usr/lib/x86_64-linux-gnu/libicudata.so.60" \
+    -DPYTHON_EXECUTABLE:FILEPATH=/usr/bin/python3 \
+    -DPYTHON_INCLUDE_DIR:PATH=/usr/include/python3.8 \
+    -DPYTHON_LIBRARY:FILEPATH=/usr/lib/x86_64-linux-gnu/libpython3.8.so \
+    "-DSCHEMA_VERSIONS=2x3;4" \
     -DGLTF_SUPPORT=On \
-    -DJSON_INCLUDE_DIR=/usr/include/json \
-    ..
-  - sudo make -j2 install
-    
-  - cd ../../test
-  - /usr/bin/python2.7 tests.py
+    -DJSON_INCLUDE_DIR=/usr/include \
+    ../cmake
+
+  # TODO: Drop sudo
+  - sudo make -j $(nproc) install
+
+  - cd ../test
+  - /usr/bin/python tests.py
+  - /usr/bin/python ../src/ifcopenshell-python/ifcopenshell/test_ids.py
 
   - cd input
-  
+
   - /usr/local/bin/IfcConvert -yv acad2010_walls.ifc acad2010_walls.glb
-  # - gltf_validator acad2010_walls.glb
-  
-  - /usr/bin/python2.7 -c "from __future__ import print_function; from io import open; import ifcopenshell; f = ifcopenshell.open('encoding.ifc'); assert list(map(ord, f[1][0])) == [39, 97, 39, 32, 49, 109, 179, 32, 8804, 32, 53, 109, 179, 32, 8805, 32, 49, 48, 109, 179]"
-  
+
+  - /usr/bin/python -c "from io import open; import ifcopenshell; f = ifcopenshell.open('encoding.ifc'); assert list(map(ord, f[1][0])) == [39, 97, 39, 32, 49, 109, 179, 32, 8804, 32, 53, 109, 179, 32, 8805, 32, 49, 48, 109, 179]"
+
   - |
     (for i in *.ifc; do \
     echo $i | tee -a log; \
@@ -64,3 +74,6 @@ script:
   - echo Succeeded
   - grep 0$ statuses
   - grep 0$ statuses | wc -l
+
+after_script:
+  - if [ $TRAVIS_OS_NAME == "linux" ]; then ccache -s; fi

COPYING

@@ -1,7 +1,7 @@
                     GNU GENERAL PUBLIC LICENSE
                        Version 3, 29 June 2007
 
- Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
  Everyone is permitted to copy and distribute verbatim copies
  of this license document, but changing it is not allowed.
 
@@ -618,4 +618,4 @@ an absolute waiver of all civil liability in connection with the
 Program, unless a warranty or assumption of liability accompanies a
 copy of the Program in return for a fee.
 
-                     END OF TERMS AND CONDITIONS
+                     END OF TERMS AND CONDITIONS

COPYING.LESSER

@@ -1,7 +1,7 @@
                    GNU LESSER GENERAL PUBLIC LICENSE
                        Version 3, 29 June 2007
 
- Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
  Everyone is permitted to copy and distribute verbatim copies
  of this license document, but changing it is not allowed.
 

README.md

@@ -19,8 +19,8 @@ Prerequisites
 Dependencies
 -------------
 * [Boost](http://www.boost.org/)
-* [Open Cascade](http://opencascade.org) - *optional*, but required for building IfcGeom
-  ([official](http://www.opencascade.org/getocc/download/loadocc/), "OCCT", or [community edition](https://github.com/tpaviot/oce), "OCE")  
+* [Open Cascade](https://dev.opencascade.org/) - *optional*, but required for building IfcGeom
+  ([official](https://dev.opencascade.org/release), "OCCT", or [community edition](https://github.com/tpaviot/oce), "OCE")  
   For converting IFC representation items into BRep solids and tesselated meshes
 * [OpenCOLLADA](https://github.com/khronosGroup/OpenCOLLADA/) - *optional*  
   For IfcConvert to be able to write tessellated Collada (.dae) files
@@ -101,7 +101,7 @@ Note: where `make -j` is written, add a number roughly equal to the amount of CP
     $ make -j
     $ sudo make install
 
-**2c)** or obtain and compile OCCT from http://www.opencascade.org/getocc/download/loadocc/
+**2c)** or obtain and compile OCCT from https://dev.opencascade.org/release
 
 **3)** For building IfcConvert with COLLADA (.dae) support (on by default), OpenCOLLADA is needed:
 
@@ -217,7 +217,43 @@ Usage examples
     >>> # Writing IFC-SPF files to disk:
     >>> f.write("out.ifc")
 
-[LGPL]: https://github.com/IfcOpenShell/IfcOpenShell/tree/master/COPYING "LGPL"
+Extra tools
+-----------
+
+Also available are a series of utilities that are based on or related to IfcOpenShell.
+
+Those marked with an asterisk are part of IfcOpenShell.
+
+Name | License
+--- | ---
+bcf | LGPL-3.0-or-later
+blenderbim | GPL-3.0-or-later
+bsdd | LGPL-3.0-or-later
+ifc2ca | LGPL-3.0-or-later
+ifcbimtester | LGPL-3.0-or-later
+ifcblender | LGPL-3.0-or-later\*
+ifccityjson | LGPL-3.0-or-later
+ifcclash | LGPL-3.0-or-later
+ifccobie | LGPL-3.0-or-later
+ifcconvert | LGPL-3.0-or-later\*
+ifccsv | LGPL-3.0-or-later
+ifcdiff | LGPL-3.0-or-later
+ifcfm | LGPL-3.0-or-later
+ifcgeom | LGPL-3.0-or-later\*
+ifcgeom\_schema\_agnostic | LGPL-3.0-or-later\*
+ifcgeomserver | LGPL-3.0-or-later\*
+ifcjni | LGPL-3.0-or-later\*
+ifcmax | LGPL-3.0-or-later\*
+ifcopenshell-python | LGPL-3.0-or-later\*
+ifcp6 | LGPL-3.0-or-later
+ifcparse | LGPL-3.0-or-later\*
+ifcpatch | LGPL-3.0-or-later
+ifcsverchok | GPL-3.0-or-later
+ifcwrap | LGPL-3.0-or-later\*
+qtviewer | LGPL-3.0-or-later\*
+serializers | LGPL-3.0-or-later\*
+
+[LGPL]: https://github.com/IfcOpenShell/IfcOpenShell/tree/master/COPYING.LESSER "LGPL-3.0-or-later"
 [IFC]: https://technical.buildingsmart.org/standards/ifc/ "IFC"
 [IFC2x3 TC1]: https://standards.buildingsmart.org/IFC/RELEASE/IFC2x3/TC1/HTML/ "IFC2x3 TC1"
 [IFC4 Add2 TC1]: https://standards.buildingsmart.org/IFC/RELEASE/IFC4/ADD2_TC1/HTML/ "IFC4 Add2 TC1"

cmake/CMakeLists.txt

@@ -23,7 +23,7 @@ set(CMAKE_CXX_STANDARD_REQUIRED ON)  # not necessary, but encouraged
 
 project (IfcOpenShell VERSION 0.6.0)
 
-# use extra version to make pre-release using eg semver 
+# use extra version to make pre-release using eg semver
 set( EXTRA_VERSION "-alpha.3")
 
 foreach(max_year RANGE 2014 2030)
@@ -280,7 +280,7 @@ ENDIF()
 # Use the found libTKernel as a template for all other OCC libraries
 # TODO Extract this into macro/function
 foreach(lib ${OPENCASCADE_LIBRARY_NAMES})
-    # Make sure we'll handle the Windows/MSVC debug postfix convetion too.
+    # Make sure we'll handle the Windows/MSVC debug postfix convention too.
     string(REPLACE TKerneld "${lib}" lib_path "${libTKernel}")
     string(REPLACE TKernel "${lib}" lib_path "${lib_path}")
 	list(APPEND OPENCASCADE_LIBRARIES "${lib_path}")
@@ -355,7 +355,7 @@ IF(COLLADA_SUPPORT AND BUILD_CONVERT)
 
 		# Use the found OpenCOLLADAFramework as a template for all other OpenCOLLADA libraries
 		foreach(lib ${OPENCOLLADA_LIBRARY_NAMES})
-            # Make sure we'll handle the Windows/MSVC debug postfix convetion too.
+            # Make sure we'll handle the Windows/MSVC debug postfix convention too.
             string(REPLACE OpenCOLLADAFrameworkd "${lib}" lib_path "${OpenCOLLADAFramework}")
             string(REPLACE OpenCOLLADAFramework "${lib}" lib_path "${lib_path}")
  			list(APPEND OPENCOLLADA_LIBRARIES "${lib_path}")
@@ -441,7 +441,7 @@ IF(MSVC)
 		# Disable overeager and false positives causing C4458 ("declaration of 'indentifier' hides class member"), at least for now.
 		ADD_DEFINITIONS(-wd4458)
 	ENDIF()
-    # Enforce standards-conformance on VS > 2015, older Boost versions fail to compile with this    
+    # Enforce standards-conformance on VS > 2015, older Boost versions fail to compile with this
     if (MSVC_VERSION GREATER 1900 AND (Boost_MAJOR_VERSION GREATER 1 OR Boost_MINOR_VERSION GREATER 66))
         add_definitions(-permissive-)
     endif()
@@ -466,6 +466,10 @@ ElSE()
     else()
         add_definitions(-Wno-maybe-uninitialized)
     endif()
+    if (CMAKE_CXX_COMPILER_ID MATCHES "GNU" AND (CMAKE_CXX_COMPILER_VERSION VERSION_GREATER 9.0 OR CMAKE_CXX_COMPILER_VERSION VERSION_EQUAL 9.0))
+        # OpenCascade spews a lot of deprecated-copy warnings
+        add_definitions(-Wno-deprecated-copy)
+    endif()
     # -fPIC is not relevant on Windows and creates pointless warnings
     if (UNIX)
         add_definitions(-fPIC)
@@ -482,27 +486,33 @@ INCLUDE_DIRECTORIES(${INCLUDE_DIRECTORIES} ${OCC_INCLUDE_DIR} ${OPENCOLLADA_INCL
 
 function(files_for_ifc_version IFC_VERSION RESULT_NAME)
     set(IFC_PARSE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/../src/ifcparse)
-    set(${RESULT_NAME} 
-        ${IFC_PARSE_DIR}/Ifc${IFC_VERSION}.h 
+    set(${RESULT_NAME}
+        ${IFC_PARSE_DIR}/Ifc${IFC_VERSION}.h
         ${IFC_PARSE_DIR}/Ifc${IFC_VERSION}enum.h
         ${IFC_PARSE_DIR}/Ifc${IFC_VERSION}.cpp
 		PARENT_SCOPE
     )
 endfunction()
 
-set(SCHEMA_VERSIONS "2x3" "4" "4x1" "4x2" "4x3_rc1" "4x3_rc2")
+if(NOT SCHEMA_VERSIONS)
+    set(SCHEMA_VERSIONS "2x3" "4" "4x1" "4x2" "4x3_rc1" "4x3_rc2" "4x3_rc3" "4x3_rc4")
+endif()
+
+foreach(s ${SCHEMA_VERSIONS})
+	add_definitions(-DHAS_SCHEMA_${s})
+endforeach()
 
 if(COMPILE_SCHEMA)
 	# @todo, this appears to be untested at the moment
 
     find_package(PythonInterp)
-    
+
     IF(NOT PYTHONINTERP_FOUND)
         MESSAGE(FATAL_ERROR "A Python interpreter is necessary when COMPILE_SCHEMA is enabled. Disable COMPILE_SCHEMA or fix Python paths to proceed.")
     ENDIF()
-    
+
     set(IFC_RELEASE_NOT_USED ${SCHEMA_VERSIONS})
-    
+
     # Install pyparsing if necessary
     execute_process(COMMAND ${PYTHON_EXECUTABLE} -m pip freeze OUTPUT_VARIABLE PYTHON_PACKAGE_LIST)
     if ("${PYTHON_PACKAGE_LIST}" STREQUAL "")
@@ -524,23 +534,23 @@ if(COMPILE_SCHEMA)
     else()
         message(STATUS "Python interpreter with pyparsing found")
     endif()
-    
+
     # Bootstrap the parser
     message(STATUS "Compiling schema, this will take a while...")
-    execute_process(COMMAND ${PYTHON_EXECUTABLE} bootstrap.py express.bnf 
-        WORKING_DIRECTORY ../src/ifcexpressparser 
+    execute_process(COMMAND ${PYTHON_EXECUTABLE} bootstrap.py express.bnf
+        WORKING_DIRECTORY ../src/ifcexpressparser
         OUTPUT_FILE express_parser.py
         RESULT_VARIABLE SUCCESS)
 
     if (NOT "${SUCCESS}" STREQUAL "0")
         MESSAGE(FATAL_ERROR "Failed to bootstrap parser. Make sure pyparsing is installed")
     endif()
-        
+
     # Generate code
     execute_process(COMMAND ${PYTHON_EXECUTABLE} ../ifcexpressparser/express_parser.py ../../${COMPILE_SCHEMA}
         WORKING_DIRECTORY ../src/ifcparse
         OUTPUT_VARIABLE COMPILED_SCHEMA_NAME)
-    
+
     # Prevent the schema that had just been compiled from being excluded
 	foreach(s ${SCHEMA_VERSIONS})
 		if("${COMPILED_SCHEMA_NAME}" STREQUAL "${s}")
@@ -569,8 +579,35 @@ if (BUILD_CONVERT)
 endif()
 
 # IfcParse
-file(GLOB IFCPARSE_H_FILES ../src/ifcparse/*.h)
-file(GLOB IFCPARSE_CPP_FILES ../src/ifcparse/*.cpp)
+file(GLOB IFCPARSE_H_FILES_ALL ../src/ifcparse/*.h)
+file(GLOB IFCPARSE_CPP_FILES_ALL ../src/ifcparse/*.cpp)
+
+foreach(s ${IFCPARSE_H_FILES_ALL})
+get_filename_component(p "${s}" NAME)
+if (NOT "${p}" MATCHES "[0-9]")
+list(APPEND IFCPARSE_H_FILES "${s}")
+endif()
+endforeach()
+
+foreach(s ${IFCPARSE_CPP_FILES_ALL})
+get_filename_component(p "${s}" NAME)
+if (NOT "${p}" MATCHES "[0-9]")
+list(APPEND IFCPARSE_CPP_FILES "${s}")
+endif()
+endforeach()
+
+foreach(s ${SCHEMA_VERSIONS})
+	list(APPEND IFCPARSE_H_FILES
+		../src/ifcparse/Ifc${s}.h
+		../src/ifcparse/Ifc${s}-definitions.h
+	)
+	list(APPEND IFCPARSE_CPP_FILES
+		../src/ifcparse/Ifc${s}.cpp
+		../src/ifcparse/Ifc${s}-schema.cpp
+	)
+endforeach()
+
+
 set(IFCPARSE_FILES ${IFCPARSE_CPP_FILES} ${IFCPARSE_H_FILES})
 
 add_library(IfcParse ${IFCPARSE_FILES})
@@ -603,7 +640,7 @@ if (UNIX)
 find_package(Threads)
 endif()
 
-TARGET_LINK_LIBRARIES(IfcGeom ${IFCGEOM_SCHEMA_LIBRARIES} ${CMAKE_THREAD_LIBS_INIT})
+TARGET_LINK_LIBRARIES(IfcGeom IfcParse ${IFCGEOM_SCHEMA_LIBRARIES} ${CMAKE_THREAD_LIBS_INIT})
 
 endif(BUILD_IFCGEOM)
 
@@ -673,7 +710,7 @@ INSTALL(TARGETS IfcGeomServer
 
 endif()
 
-# Documentation	
+# Documentation
 IF(BUILD_DOCUMENTATION)
 	set(CMAKE_MODULE_PATH "../docs/cmake")
 	ADD_SUBDIRECTORY(../docs docs)
@@ -692,7 +729,7 @@ IF(BUILD_IFCMAX)
 ENDIF()
 
 # CMake installation targets
-INSTALL(FILES ${IFCPARSE_H_FILES} 
+INSTALL(FILES ${IFCPARSE_H_FILES}
 	DESTINATION ${INCLUDEDIR}/ifcparse
 )
 
@@ -703,11 +740,11 @@ INSTALL(TARGETS IfcParse
 )
 
 if(BUILD_IFCGEOM)
-INSTALL(FILES ${IFCGEOM_H_FILES} 
+INSTALL(FILES ${IFCGEOM_H_FILES}
 	DESTINATION ${INCLUDEDIR}/ifcgeom
 )
 
-INSTALL(FILES  ${SCHEMA_AGNOSTIC_H_FILES} 
+INSTALL(FILES  ${SCHEMA_AGNOSTIC_H_FILES}
 	DESTINATION ${INCLUDEDIR}/ifcgeom_schema_agnostic
 )
 

nix/build-all.py

@@ -310,7 +310,7 @@ def run(cmds, cwd=None):
 BOOST_VERSION_UNDERSCORE=BOOST_VERSION.replace(".", "_")
 
 OCE_LOCATION="https://github.com/tpaviot/oce/archive/OCE-%s.tar.gz" % (OCE_VERSION,)
-BOOST_LOCATION="https://dl.bintray.com/boostorg/release/%s/source/" % (BOOST_VERSION,)
+BOOST_LOCATION="https://boostorg.jfrog.io/artifactory/main/release/%s/source/" % (BOOST_VERSION,)
 
 # Helper functions
 

src/bcf/COPYING

@@ -0,0 +1,621 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The GNU General Public License is a free, copyleft license for
+software and other kinds of works.
+
+  The licenses for most software and other practical works are designed
+to take away your freedom to share and change the works.  By contrast,
+the GNU General Public License is intended to guarantee your freedom to
+share and change all versions of a program--to make sure it remains free
+software for all its users.  We, the Free Software Foundation, use the
+GNU General Public License for most of our software; it applies also to
+any other work released this way by its authors.  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+them if you wish), that you receive source code or can get it if you
+want it, that you can change the software or use pieces of it in new
+free programs, and that you know you can do these things.
+
+  To protect your rights, we need to prevent others from denying you
+these rights or asking you to surrender the rights.  Therefore, you have
+certain responsibilities if you distribute copies of the software, or if
+you modify it: responsibilities to respect the freedom of others.
+
+  For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must pass on to the recipients the same
+freedoms that you received.  You must make sure that they, too, receive
+or can get the source code.  And you must show them these terms so they
+know their rights.
+
+  Developers that use the GNU GPL protect your rights with two steps:
+(1) assert copyright on the software, and (2) offer you this License
+giving you legal permission to copy, distribute and/or modify it.
+
+  For the developers' and authors' protection, the GPL clearly explains
+that there is no warranty for this free software.  For both users' and
+authors' sake, the GPL requires that modified versions be marked as
+changed, so that their problems will not be attributed erroneously to
+authors of previous versions.
+
+  Some devices are designed to deny users access to install or run
+modified versions of the software inside them, although the manufacturer
+can do so.  This is fundamentally incompatible with the aim of
+protecting users' freedom to change the software.  The systematic
+pattern of such abuse occurs in the area of products for individuals to
+use, which is precisely where it is most unacceptable.  Therefore, we
+have designed this version of the GPL to prohibit the practice for those
+products.  If such problems arise substantially in other domains, we
+stand ready to extend this provision to those domains in future versions
+of the GPL, as needed to protect the freedom of users.
+
+  Finally, every program is threatened constantly by software patents.
+States should not allow patents to restrict development and use of
+software on general-purpose computers, but in those that do, we wish to
+avoid the special danger that patents applied to a free program could
+make it effectively proprietary.  To prevent this, the GPL assures that
+patents cannot be used to render the program non-free.
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+  17. Interpretation of Sections 15 and 16.
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+
+                     END OF TERMS AND CONDITIONS

src/bcf/COPYING.LESSER

@@ -0,0 +1,165 @@
+                   GNU LESSER GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+
+  This version of the GNU Lesser General Public License incorporates
+the terms and conditions of version 3 of the GNU General Public
+License, supplemented by the additional permissions listed below.
+
+  0. Additional Definitions.
+
+  As used herein, "this License" refers to version 3 of the GNU Lesser
+General Public License, and the "GNU GPL" refers to version 3 of the GNU
+General Public License.
+
+  "The Library" refers to a covered work governed by this License,
+other than an Application or a Combined Work as defined below.
+
+  An "Application" is any work that makes use of an interface provided
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+
+  1. Exception to Section 3 of the GNU GPL.
+
+  You may convey a covered work under sections 3 and 4 of this License
+without being bound by section 3 of the GNU GPL.
+
+  2. Conveying Modified Versions.
+
+  If you modify a copy of the Library, and, in your modifications, a
+facility refers to a function or data to be supplied by an Application
+that uses the facility (other than as an argument passed when the
+facility is invoked), then you may convey a copy of the modified
+version:
+
+   a) under this License, provided that you make a good faith effort to
+   ensure that, in the event an Application does not supply the
+   function or data, the facility still operates, and performs
+   whatever part of its purpose remains meaningful, or
+
+   b) under the GNU GPL, with none of the additional permissions of
+   this License applicable to that copy.
+
+  3. Object Code Incorporating Material from Library Header Files.
+
+  The object code form of an Application may incorporate material from
+a header file that is part of the Library.  You may convey such object
+code under terms of your choice, provided that, if the incorporated
+material is not limited to numerical parameters, data structure
+layouts and accessors, or small macros, inline functions and templates
+(ten or fewer lines in length), you do both of the following:
+
+   a) Give prominent notice with each copy of the object code that the
+   Library is used in it and that the Library and its use are
+   covered by this License.
+
+   b) Accompany the object code with a copy of the GNU GPL and this license
+   document.
+
+  4. Combined Works.
+
+  You may convey a Combined Work under terms of your choice that,
+taken together, effectively do not restrict modification of the
+portions of the Library contained in the Combined Work and reverse
+engineering for debugging such modifications, if you also do each of
+the following:
+
+   a) Give prominent notice with each copy of the Combined Work that
+   the Library is used in it and that the Library and its use are
+   covered by this License.
+
+   b) Accompany the Combined Work with a copy of the GNU GPL and this license
+   document.
+
+   c) For a Combined Work that displays copyright notices during
+   execution, include the copyright notice for the Library among
+   these notices, as well as a reference directing the user to the
+   copies of the GNU GPL and this license document.
+
+   d) Do one of the following:
+
+       0) Convey the Minimal Corresponding Source under the terms of this
+       License, and the Corresponding Application Code in a form
+       suitable for, and under terms that permit, the user to
+       recombine or relink the Application with a modified version of
+       the Linked Version to produce a modified Combined Work, in the
+       manner specified by section 6 of the GNU GPL for conveying
+       Corresponding Source.
+
+       1) Use a suitable shared library mechanism for linking with the
+       Library.  A suitable mechanism is one that (a) uses at run time
+       a copy of the Library already present on the user's computer
+       system, and (b) will operate properly with a modified version
+       of the Library that is interface-compatible with the Linked
+       Version.
+
+   e) Provide Installation Information, but only if you would otherwise
+   be required to provide such information under section 6 of the
+   GNU GPL, and only to the extent that such information is
+   necessary to install and execute a modified version of the
+   Combined Work produced by recombining or relinking the
+   Application with a modified version of the Linked Version. (If
+   you use option 4d0, the Installation Information must accompany
+   the Minimal Corresponding Source and Corresponding Application
+   Code. If you use option 4d1, you must provide the Installation
+   Information in the manner specified by section 6 of the GNU GPL
+   for conveying Corresponding Source.)
+
+  5. Combined Libraries.
+
+  You may place library facilities that are a work based on the
+Library side by side in a single library together with other library
+facilities that are not Applications and are not covered by this
+License, and convey such a combined library under terms of your
+choice, if you do both of the following:
+
+   a) Accompany the combined library with a copy of the same work based
+   on the Library, uncombined with any other library facilities,
+   conveyed under the terms of this License.
+
+   b) Give prominent notice with the combined library that part of it
+   is a work based on the Library, and explaining where to find the
+   accompanying uncombined form of the same work.
+
+  6. Revised Versions of the GNU Lesser General Public License.
+
+  The Free Software Foundation may publish revised and/or new versions
+of the GNU Lesser General Public License from time to time. Such new
+versions will be similar in spirit to the present version, but may
+differ in detail to address new problems or concerns.
+
+  Each version is given a distinguishing version number. If the
+Library as you received it specifies that a certain numbered version
+of the GNU Lesser General Public License "or any later version"
+applies to it, you have the option of following the terms and
+conditions either of that published version or of any later version
+published by the Free Software Foundation. If the Library as you
+received it does not specify a version number of the GNU Lesser
+General Public License, you may choose any version of the GNU Lesser
+General Public License ever published by the Free Software Foundation.
+
+  If the Library as you received it specifies that a proxy can decide
+whether future versions of the GNU Lesser General Public License shall
+apply, that proxy's public statement of acceptance of any version is
+permanent authorization for you to choose that version for the
+Library.

src/bcf/README.md

@@ -4,23 +4,26 @@ A simple Python implementation of BCF. The data model is described in `data.py`.
 Manipulation of BCF-XML is available via `bcfxml.py` and manipulation of BCF-API
 is available via `bcfapi.py`.
 
-Currently supports BCF version 2.1.
+ - BCF-XML version 2.1: Fully supported
+ - BCF-API version 2.1: Not supported, will probably tackle this after BCF-API v3.0
+ - BCF-XML version 3.0: Almost fully supported, except for the documents module
+ - BCF-API version 3.0: Almost fully supported, except for two requests.
 
 ## bcfxml
 
 The `bcfxml` module lets you interact with the BCF-XML standard.
 
-```
-from bcf.bcfxml import BcfXml
+```python
+from bcf import bcfxml
 
-bcfxml = BcfXml()
 
 # Load a project
-project = bcfxml.get_project("/path/to/file.bcf")
+bcfxml = bcfxml.load("/path/to/file.bcf")
+
 
 # The project is also stored in the module
 # project == bcfxml.project
-
+project=bcfxml.get_project()
 print(project.name)
 
 # To edit a project, just modify the object directly
@@ -57,3 +60,42 @@ topic = bcfxml.get_topic(guid)
 topic.title = "New title"
 bcfxml.edit_topic(topic)
 ```
+
+## bcfapi
+
+The `bcfapi` module lets you interact with the BCF-API standard.
+
+```python
+from bcf.v3.bcfapi import Client
+
+client_id = "YOUR_CLIENT_ID"
+client_secret = "YOUR_CLIENT_SECRET"
+
+client = Client(client_id, client_secret)
+client.set_urls(base_url="OPENCDE_BASEURL")
+auth_methods = client.get_auth_methods()
+
+# Our library currently only implements the authorization_code flow
+if "authorization_code" in auth_methods:
+    client.login()
+
+versions = client.get_versions()
+
+if "3.0" in versions:
+    client.set_version(version="3.0")
+
+data = client.get_projects()
+print(data)
+project_id = data[0]["project_id"]
+print(project_id)
+data = client.get_project(project_id)
+print(data)
+data = client.get_extensions(project_id)
+print(data)
+```
+
+## Todo List 
+The remaining work that needs to be completed in `bcfxml.py` and `bcfapi.py`.
+  * For `bcfxml.py` two xsds support is remaining namely 'documents.xsd` and `extensions.xsd`.
+  * For `bcfapi.py` two requests that are `get_topics` and `get_comments` are remaining.
+

src/bcf/bcf/bcfxml.py

@@ -1,762 +1,42 @@
-import os
-import uuid
-import shutil
+import os.path
 import zipfile
-import logging
 import tempfile
-import bcf.data
-from datetime import datetime
 from xml.dom import minidom
-from xmlschema import XMLSchema
-from contextlib import contextmanager
-from shutil import copyfile
 
 
-cwd = os.path.dirname(os.path.realpath(__file__))
+def load(filepath):
+    filepath = extract_project(filepath)
+    if os.path.isfile(os.path.join(filepath, "bcf.version")):
+        version_path = os.path.join(filepath, "bcf.version")
+        version_id = get_version(version_path)
+        # TODO: we actually coded it for 2.1, let's check the difference between 2.0 and 2.1
+        if version_id == "2.1" or version_id == "2.0":
+            from bcf.v2.bcfxml import BcfXml
 
+            bcfxml = BcfXml()
+            bcfxml.filepath = filepath
+            return bcfxml
+        elif version_id == "3.0":
+            from bcf.v3.bcfxml import BcfXml
 
-@contextmanager
-def cd(newdir):
-    prevdir = os.getcwd()
-    os.chdir(os.path.expanduser(newdir))
-    try:
-        yield
-    finally:
-        os.chdir(prevdir)
-
-
-class BcfXml:
-    def __init__(self):
-        self.filepath = None
-        self.logger = logging.getLogger("bcfxml")
-        self.author = "john@doe.com"
-        self.project = bcf.data.Project()
-        self.version = "2.1"
-        self.topics = {}
-
-    def new_project(self):
-        self.project.project_id = str(uuid.uuid4())
-        self.project.name = "New Project"
-        self.topics = {}
-        if self.filepath:
-            self.close_project()
-        self.filepath = tempfile.mkdtemp()
-        self.edit_project()
-        self.edit_version()
-
-    def get_project(self, filepath=None):
-        if not filepath:
-            return self.project
-        zip_file = zipfile.ZipFile(filepath)
-        self.filepath = tempfile.mkdtemp()
-        zip_file.extractall(self.filepath)
-        data = self._read_xml("project.bcfp", "project.xsd")
-        self.project.project_id = data["Project"]["@ProjectId"]
-        self.project.name = data["Project"]["Name"]
-        return self.project
-
-    def edit_project(self):
-        self.document = minidom.Document()
-        root = self._create_element(self.document, "ProjectExtension")
-        project = self._create_element(root, "Project", {"ProjectId": self.project.project_id})
-        self._create_element(project, "Name", text=self.project.name)
-        self._create_element(root, "ExtensionSchema", text="extensions.xsd")
-        with open(os.path.join(self.filepath, "project.bcfp"), "wb") as f:
-            f.write(self.document.toprettyxml(encoding="utf-8"))
-
-    def save_project(self, filepath):
-        with cd(self.filepath):
-            zip_file = zipfile.ZipFile(filepath, "w", zipfile.ZIP_DEFLATED)
-            for root, dirs, files in os.walk("./"):
-                for file in files:
-                    zip_file.write(os.path.join(root, file))
-            zip_file.close()
-
-    def get_version(self):
-        data = self._read_xml("bcf.version", "version.xsd")
-        self.version = data["@VersionId"]
-        return self.version
-
-    def edit_version(self):
-        self.document = minidom.Document()
-        root = self._create_element(self.document, "Version", {"VersionId": self.version})
-        version = self._create_element(root, "DetailedVersion", text=self.version)
-        with open(os.path.join(self.filepath, "bcf.version"), "wb") as f:
-            f.write(self.document.toprettyxml(encoding="utf-8"))
-
-    def get_topics(self):
-        self.topics = {}
-        topics = []
-        subdirs = []
-        for (dirpath, dirnames, filenames) in os.walk(self.filepath):
-            subdirs = dirnames
-            break
-        for subdir in subdirs:
-            self.topics[subdir] = self.get_topic(subdir)
-        return self.topics
-
-    def get_header(self, guid):
-        data = self._read_xml(os.path.join(guid, "markup.bcf"), "markup.xsd")
-        if "Header" not in data:
-            return
-        header = bcf.data.Header()
-        for item in data["Header"]["File"]:
-            header_file = bcf.data.HeaderFile()
-            optional_keys = {
-                "filename": "Filename",
-                "date": "Date",
-                "reference": "Reference",
-                "ifc_project": "@IfcProject",
-                "ifc_spatial_structure_element": "@IfcSpatialStructureElement",
-                "is_external": "@isExternal",
-            }
-            for key, value in optional_keys.items():
-                if value in item:
-                    setattr(header_file, key, item[value])
-            header.files.append(header_file)
-        self.topics[guid].header = header
-        return header
-
-    def get_topic(self, guid):
-        if guid in self.topics:
-            return self.topics[guid]
-        data = self._read_xml(os.path.join(guid, "markup.bcf"), "markup.xsd")
-        topic = bcf.data.Topic()
-        self.topics[guid] = topic
-
-        mandatory_keys = {
-            "guid": "@Guid",
-            "title": "Title",
-            "creation_date": "CreationDate",
-            "creation_author": "CreationAuthor",
-        }
-        for key, value in mandatory_keys.items():
-            setattr(topic, key, data["Topic"][value])
-
-        optional_keys = {
-            "priority": "Priority",
-            "index": "Index",
-            "labels": "Labels",
-            "reference_links": "ReferenceLink",
-            "modified_date": "ModifiedDate",
-            "modified_author": "ModifiedAuthor",
-            "due_date": "DueDate",
-            "assigned_to": "AssignedTo",
-            "stage": "Stage",
-            "description": "Description",
-            "topic_status": "@TopicStatus",
-            "topic_type": "@TopicType",
-        }
-        for key, value in optional_keys.items():
-            if value in data["Topic"]:
-                setattr(topic, key, data["Topic"][value])
-
-        if "BimSnippet" in data["Topic"]:
-            bim_snippet = bcf.data.BimSnippet()
-            keys = {
-                "snippet_type": "@SnippetType",
-                "is_external": "@IsExternal",
-                "reference": "Reference",
-                "reference_schema": "ReferenceSchema",
-            }
-            for key, value in keys.items():
-                if value in data["Topic"]["BimSnippet"]:
-                    setattr(bim_snippet, key, data["Topic"]["BimSnippet"][value])
-            topic.bim_snippet = bim_snippet
-
-        if "DocumentReference" in data["Topic"]:
-            for item in data["Topic"]["DocumentReference"]:
-                document_reference = bcf.data.DocumentReference()
-                keys = {
-                    "referenced_document": "ReferencedDocument",
-                    "is_external": "@IsExternal",
-                    "guid": "@Guid",
-                    "description": "Description",
-                }
-                for key, value in keys.items():
-                    if value in item:
-                        setattr(document_reference, key, item[value])
-                topic.document_references.append(document_reference)
-
-        if "RelatedTopic" in data["Topic"]:
-            for item in data["Topic"]["RelatedTopic"]:
-                related_topic = bcf.data.RelatedTopic()
-                related_topic.guid = item["@Guid"]
-                topic.related_topics.append(related_topic)
-        return topic
-
-    def add_topic(self, topic=None):
-        if topic is None:
-            topic = bcf.data.Topic()
-        if not topic.guid:
-            topic.guid = str(uuid.uuid4())
-        if not topic.title:
-            topic.title = "New Topic"
-        os.mkdir(os.path.join(self.filepath, topic.guid))
-        self.edit_topic(topic)
-        return topic
-
-    def edit_topic(self, topic):
-        if not topic.creation_date:
-            topic.creation_date = datetime.utcnow().isoformat()
-            topic.creation_author = self.author
+            bcfxml = BcfXml()
+            bcfxml.filepath = filepath
+            return bcfxml
         else:
-            topic.modified_date = datetime.utcnow().isoformat()
-            topic.modified_author = self.author
+            raise Exception(f"Version {version_id} not supported.")
 
-        self.document = minidom.Document()
-        root = self._create_element(self.document, "Markup")
 
-        self.write_header(topic.header, root)
+def get_version(version_path):
+    xmlparse = minidom.parse(version_path)
+    version_el = xmlparse.getElementsByTagName("Version")[0]
+    version = version_el.getAttribute("VersionId")
+    return version
 
-        topic_el = self._create_element(
-            root,
-            "Topic",
-            {
-                "Guid": topic.guid,
-                "TopicType": topic.topic_type,
-                "TopicStatus": topic.topic_status,
-            },
-        )
 
-        for reference_link in topic.reference_links:
-            self._create_element(topic_el, "ReferenceLink", text=reference_link)
-
-        text_map = {
-            "Title": topic.title,
-            "Priority": topic.priority,
-            "Index": topic.index,
-        }
-        for key, value in text_map.items():
-            if value:
-                self._create_element(topic_el, key, text=value)
-
-        for label in topic.labels:
-            self._create_element(topic_el, "Labels", text=label)
-
-        text_map = {
-            "CreationDate": topic.creation_date,
-            "CreationAuthor": topic.creation_author,
-            "ModifiedDate": topic.modified_date,
-            "ModifiedAuthor": topic.modified_author,
-            "DueDate": topic.due_date,
-            "AssignedTo": topic.assigned_to,
-            "Stage": topic.stage,
-            "Description": topic.description,
-        }
-        for key, value in text_map.items():
-            if value:
-                self._create_element(topic_el, key, text=value)
-
-        if topic.bim_snippet:
-            bim_snippet = self._create_element(
-                topic_el,
-                "BimSnippet",
-                {"SnippetType": topic.bim_snippet.snippet_type, "isExternal": topic.bim_snippet.is_external},
-            )
-            self._create_element(bim_snippet, "Reference", text=topic.bim_snippet.reference)
-            self._create_element(bim_snippet, "ReferenceSchema", text=topic.bim_snippet.reference_schema)
-        for reference in topic.document_references:
-            reference_el = self._create_element(
-                topic_el, "DocumentReference", {"Guid": reference.guid, "isExternal": reference.is_external}
-            )
-            self._create_element(reference_el, "ReferencedDocument", text=reference.referenced_document)
-            self._create_element(reference_el, "Description", text=reference.description)
-        for related_topic in topic.related_topics:
-            self._create_element(topic_el, "RelatedTopic", {"Guid": related_topic.guid})
-
-        self.write_comments(topic.comments, root)
-        self.write_viewpoints(topic.viewpoints, root, topic)
-
-        with open(os.path.join(self.filepath, topic.guid, "markup.bcf"), "wb") as f:
-            f.write(self.document.toprettyxml(encoding="utf-8"))
-
-    def write_header(self, header, root):
-        if not header or not header.files:
-            return
-        header_el = self._create_element(root, "Header")
-        for f in header.files:
-            file_el = self._create_element(
-                header_el,
-                "File",
-                {
-                    "IfcProject": f.ifc_project,
-                    "IfcSpatialStructureElement": f.ifc_spatial_structure_element,
-                    "isExternal": f.is_external,
-                },
-            )
-            self._create_element(file_el, "Filename", text=f.filename)
-            self._create_element(file_el, "Date", text=f.date)
-            self._create_element(file_el, "Reference", text=f.reference)
-
-    def write_comments(self, comments, root):
-        for comment in comments.values():
-            comment_el = self._create_element(root, "Comment", {"Guid": comment.guid})
-            text_map = {
-                "Date": comment.date,
-                "Author": comment.author,
-                "Comment": comment.comment,
-                "ModifiedDate": comment.modified_date,
-                "ModifiedAuthor": comment.modified_author,
-            }
-            for key, value in text_map.items():
-                if value:
-                    self._create_element(comment_el, key, text=value)
-            if comment.viewpoint:
-                self._create_element(comment_el, "Viewpoint", {"Guid": comment.viewpoint.guid})
-
-    def add_comment(self, topic, comment=None):
-        if comment is None:
-            comment = bcf.data.Comment()
-        if not comment.guid:
-            comment.guid = str(uuid.uuid4())
-        if not comment.comment:
-            comment.comment = "'Free software' is a matter of liberty, not price. To understand the concept, you should think of 'free' as in 'free speech,' not as in 'free beer'."
-        topic.comments[comment.guid] = comment
-        self.edit_comment(comment, topic)
-
-    def edit_comment(self, comment, topic):
-        if not comment.date:
-            comment.date = datetime.utcnow().isoformat()
-            comment.author = self.author
-        else:
-            comment.modified_date = datetime.utcnow().isoformat()
-            comment.modified_author = self.author
-        self.edit_topic(topic)
-
-    def delete_comment(self, guid, topic):
-        if guid in topic.comments:
-            del topic.comments[guid]
-        self.edit_topic(topic)
-
-    def delete_topic(self, guid):
-        if guid in self.topics:
-            del self.topics[guid]
-        shutil.rmtree(os.path.join(self.filepath, guid))
-
-    def write_viewpoints(self, viewpoints, root, topic):
-        for viewpoint in viewpoints.values():
-            viewpoint_el = self._create_element(root, "Viewpoints", {"Guid": viewpoint.guid})
-            text_map = {"Viewpoint": viewpoint.viewpoint, "Snapshot": viewpoint.snapshot, "Index": viewpoint.index}
-            for key, value in text_map.items():
-                if value:
-                    self._create_element(viewpoint_el, key, text=value)
-            self.write_viewpoint(viewpoint, topic)
-
-    def write_viewpoint(self, viewpoint, topic):
-        document = minidom.Document()
-        root = self._create_element(document, "VisualizationInfo", {"Guid": viewpoint.guid})
-        self.write_viewpoint_components(viewpoint, root)
-        self.write_viewpoint_orthogonal_camera(viewpoint, root)
-        self.write_viewpoint_perspective_camera(viewpoint, root)
-        self.write_viewpoint_lines(viewpoint, root)
-        self.write_viewpoint_clipping_planes(viewpoint, root)
-        self.write_viewpoint_bitmaps(viewpoint, root)
-        with open(os.path.join(self.filepath, topic.guid, viewpoint.viewpoint), "wb") as f:
-            f.write(document.toprettyxml(encoding="utf-8"))
-
-    def write_viewpoint_components(self, viewpoint, parent):
-        if not viewpoint.components:
-            return
-        components_el = self._create_element(parent, "Components")
-        if viewpoint.components.view_setup_hints:
-            view_setup_hints = self._create_element(
-                components_el,
-                "ViewSetupHints",
-                {
-                    "SpacesVisible": viewpoint.components.view_setup_hints.spaces_visible,
-                    "SpaceBoundariesVisible": viewpoint.components.view_setup_hints.space_boundaries_visible,
-                    "OpeningsVisible": viewpoint.components.view_setup_hints.openings_visible,
-                },
-            )
-        if viewpoint.components.selection:
-            selection_el = self._create_element(components_el, "Selection")
-        for selection in viewpoint.components.selection:
-            self.write_component(selection, selection_el)
-        visibility = self._create_element(
-            components_el, "Visibility", {"DefaultVisibility": viewpoint.components.visibility.default_visibility}
-        )
-        if viewpoint.components.visibility.exceptions:
-            exceptions_el = self._create_element(visibility, "Exceptions")
-        for exception in viewpoint.components.visibility.exceptions:
-            self.write_component(exception, exceptions_el)
-        if viewpoint.components.coloring:
-            coloring_el = self._create_element(components_el, "Coloring")
-        for color in viewpoint.components.coloring:
-            color_el = self._create_element(coloring_el, "Color", {"Color": color.color})
-            for component in color.components:
-                self.write_component(component, color_el)
-
-    def write_viewpoint_orthogonal_camera(self, viewpoint, parent):
-        if not viewpoint.orthogonal_camera:
-            return
-        camera = viewpoint.orthogonal_camera
-        camera_el = self._create_element(parent, "OrthogonalCamera")
-        camera_view_point = self._create_element(camera_el, "CameraViewPoint")
-        self.write_vector(camera_view_point, camera.camera_view_point)
-        camera_direction = self._create_element(camera_el, "CameraDirection")
-        self.write_vector(camera_direction, camera.camera_direction)
-        camera_up_vector = self._create_element(camera_el, "CameraUpVector")
-        self.write_vector(camera_up_vector, camera.camera_up_vector)
-        self._create_element(camera_el, "ViewToWorldScale", text=camera.view_to_world_scale)
-
-    def write_viewpoint_perspective_camera(self, viewpoint, parent):
-        if not viewpoint.perspective_camera:
-            return
-        camera = viewpoint.perspective_camera
-        camera_el = self._create_element(parent, "PerspectiveCamera")
-        camera_view_point = self._create_element(camera_el, "CameraViewPoint")
-        self.write_vector(camera_view_point, camera.camera_view_point)
-        camera_direction = self._create_element(camera_el, "CameraDirection")
-        self.write_vector(camera_direction, camera.camera_direction)
-        camera_up_vector = self._create_element(camera_el, "CameraUpVector")
-        self.write_vector(camera_up_vector, camera.camera_up_vector)
-        self._create_element(camera_el, "FieldOfView", text=camera.field_of_view)
-
-    def write_viewpoint_lines(self, viewpoint, parent):
-        if not viewpoint.lines:
-            return
-        lines_el = self._create_element(parent, "Lines")
-        for line in viewpoint.lines:
-            line_el = self._create_element(lines_el, "Line")
-            start_point_el = self._create_element(line_el, "StartPoint")
-            self.write_vector(start_point_el, line.start_point)
-            end_point_el = self._create_element(line_el, "EndPoint")
-            self.write_vector(end_point_el, line.end_point)
-
-    def write_viewpoint_clipping_planes(self, viewpoint, parent):
-        if not viewpoint.clipping_planes:
-            return
-        planes_el = self._create_element(parent, "ClippingPlanes")
-        for plane in viewpoint.clipping_planes:
-            plane_el = self._create_element(planes_el, "ClippingPlane")
-            location_el = self._create_element(plane_el, "Location")
-            self.write_vector(location_el, plane.location)
-            direction_el = self._create_element(plane_el, "Direction")
-            self.write_vector(direction_el, plane.direction)
-
-    def write_viewpoint_bitmaps(self, viewpoint, parent):
-        if not viewpoint.bitmaps:
-            return
-        for bitmap in viewpoint.bitmaps:
-            bitmap_el = self._create_element(parent, "Bitmap")
-
-            text_map = {"Bitmap": bitmap.bitmap_type, "Reference": bitmap.reference}
-            for key, value in text_map.items():
-                self._create_element(bitmap_el, key, text=value)
-
-            location_el = self._create_element(bitmap_el, "Location")
-            self.write_vector(location_el, bitmap.location)
-            normal_el = self._create_element(bitmap_el, "Normal")
-            self.write_vector(normal_el, bitmap.normal)
-            up_el = self._create_element(bitmap_el, "Up")
-            self.write_vector(up_el, bitmap.up)
-
-            self._create_element(bitmap_el, "Height", text=bitmap.height)
-
-    def write_vector(self, parent, from_obj):
-        self._create_element(parent, "X", text=from_obj.x)
-        self._create_element(parent, "Y", text=from_obj.y)
-        self._create_element(parent, "Z", text=from_obj.z)
-
-    def write_component(self, data, parent):
-        component_el = self._create_element(parent, "Component", {"IfcGuid": data.ifc_guid})
-        text_map = {"OriginatingSystem": data.originating_system, "AuthoringToolId": data.authoring_tool_id}
-        for key, value in text_map.items():
-            if value:
-                self._create_element(component_el, key, text=value)
-
-    def add_viewpoint(self, topic, viewpoint=None):
-        if not viewpoint:
-            viewpoint = bcf.data.Viewpoint()
-        if not viewpoint.guid:
-            viewpoint.guid = str(uuid.uuid4())
-        if not viewpoint.viewpoint:
-            viewpoint.viewpoint = f"{viewpoint.guid}.bcfv"
-        if viewpoint.snapshot:
-            topic_filepath = os.path.join(self.filepath, topic.guid)
-            filepath = os.path.join(topic_filepath, viewpoint.snapshot)
-            if not os.path.exists(filepath):
-                filename = viewpoint.guid + os.path.splitext(viewpoint.snapshot)[-1]
-                copyfile(viewpoint.snapshot, os.path.join(topic_filepath, filename))
-                viewpoint.snapshot = filename
-        topic.viewpoints[viewpoint.guid] = viewpoint
-        self.edit_topic(topic)
-
-    def delete_viewpoint(self, guid, topic):
-        if guid not in topic.viewpoints:
-            return
-        viewpoint = topic.viewpoints[guid]
-        if viewpoint.snapshot:
-            filepath = os.path.join(self.filepath, topic.guid, viewpoint.snapshot)
-            if os.path.exists(filepath):
-                os.remove(filepath)
-        if viewpoint.viewpoint:
-            filepath = os.path.join(self.filepath, topic.guid, viewpoint.viewpoint)
-            if os.path.exists(filepath):
-                os.remove(filepath)
-        for bitmap in viewpoint.bitmaps:
-            if not bitmap.reference:
-                continue
-            filepath = os.path.join(self.filepath, topic.guid, bitmap.reference)
-            if os.path.exists(filepath):
-                os.remove(filepath)
-        del topic.viewpoints[guid]
-        self.edit_topic(topic)
-
-    def delete_file(self, topic, index):
-        if not topic.header:
-            return
-        f = topic.header.files.pop(index)
-        filepath = os.path.join(self.filepath, topic.guid, f.reference)
-        if not f.is_external and os.path.exists(filepath):
-            os.remove(filepath)
-        self.edit_topic(topic)
-
-    def delete_bim_snippet(self, topic):
-        if not topic.bim_snippet:
-            return
-        if topic.bim_snippet.reference and not topic.bim_snippet.is_external:
-            filepath = os.path.join(self.filepath, topic.guid, topic.bim_snippet.reference)
-            if os.path.exists(filepath):
-                os.remove(filepath)
-        topic.bim_snippet = None
-        self.edit_topic(topic)
-
-    def delete_document_reference(self, topic, index):
-        document_reference = topic.document_references[index]
-        if document_reference.referenced_document and not document_reference.is_external:
-            filepath = os.path.join(self.filepath, topic.guid, document_reference.referenced_document)
-            if os.path.exists(filepath):
-                os.remove(filepath)
-        del topic.document_references[index]
-        self.edit_topic(topic)
-
-    def add_document_reference(self, topic, document_reference):
-        if os.path.exists(document_reference.referenced_document):
-            topic_filepath = os.path.join(self.filepath, topic.guid)
-            filename = os.path.basename(document_reference.referenced_document)
-            copyfile(document_reference.referenced_document, os.path.join(topic_filepath, filename))
-            document_reference.referenced_document = filename
-            document_reference.is_external = False
-        else:
-            document_reference.is_external = True
-        if not document_reference.guid:
-            document_reference.guid = str(uuid.uuid4())
-        topic.document_references.append(document_reference)
-        self.edit_topic(topic)
-
-    def add_bim_snippet(self, topic, bim_snippet):
-        if topic.bim_snippet:
-            self.delete_bim_snippet(topic)
-        if os.path.exists(bim_snippet.reference):
-            topic_filepath = os.path.join(self.filepath, topic.guid)
-            filename = os.path.basename(bim_snippet.reference)
-            copyfile(bim_snippet.reference, os.path.join(topic_filepath, filename))
-            bim_snippet.reference = filename
-            bim_snippet.is_external = False
-        else:
-            bim_snippet.is_external = True
-        topic.bim_snippet = bim_snippet
-        self.edit_topic(topic)
-
-    def add_file(self, topic, header_file):
-        if os.path.exists(header_file.reference):
-            topic_filepath = os.path.join(self.filepath, topic.guid)
-            header_file.filename = os.path.basename(header_file.reference)
-            copyfile(header_file.reference, os.path.join(topic_filepath, header_file.filename))
-            header_file.reference = header_file.filename
-            header_file.is_external = False
-        header_file.date = datetime.utcnow().isoformat()
-        if not topic.header:
-            topic.header = bcf.data.Header()
-        topic.header.files.append(header_file)
-        self.edit_topic(topic)
-
-    def get_comments(self, guid):
-        comments = {}
-        data = self._read_xml(os.path.join(guid, "markup.bcf"), "markup.xsd")
-        if "Comment" not in data:
-            return comments
-        for item in data["Comment"]:
-            comment = bcf.data.Comment()
-            mandatory_keys = {"guid": "@Guid", "date": "Date", "author": "Author", "comment": "Comment"}
-            for key, value in mandatory_keys.items():
-                setattr(comment, key, item[value])
-            optional_keys = {"modified_date": "ModifiedDate", "modified_author": "ModifiedAuthor"}
-            for key, value in optional_keys.items():
-                if value in item:
-                    setattr(comment, key, item[value])
-            if "Viewpoint" in item:
-                viewpoint = bcf.data.Viewpoint()
-                viewpoint.guid = item["Viewpoint"]["@Guid"]
-                comment.viewpoint = viewpoint
-            comments[comment.guid] = comment
-        self.topics[guid].comments = comments
-        return comments
-
-    def get_viewpoints(self, guid):
-        viewpoints = {}
-        data = self._read_xml(os.path.join(guid, "markup.bcf"), "markup.xsd")
-        if "Viewpoints" not in data:
-            return viewpoints
-        for item in data["Viewpoints"]:
-            viewpoint = self.get_viewpoint(item, guid)
-            viewpoints[viewpoint.guid] = viewpoint
-        self.topics[guid].viewpoints = viewpoints
-        return viewpoints
-
-    def get_viewpoint(self, data, topic_guid):
-        viewpoint = bcf.data.Viewpoint()
-        viewpoint.guid = data["@Guid"]
-        optional_keys = {"viewpoint": "Viewpoint", "snapshot": "Snapshot", "index": "Index"}
-        for key, value in optional_keys.items():
-            if value in data:
-                setattr(viewpoint, key, data[value])
-        visinfo = self._read_xml(os.path.join(topic_guid, viewpoint.viewpoint), "visinfo.xsd")
-        viewpoint.components = self.get_viewpoint_components(visinfo)
-        viewpoint.orthogonal_camera = self.get_viewpoint_orthogonal_camera(visinfo)
-        viewpoint.perspective_camera = self.get_viewpoint_perspective_camera(visinfo)
-        viewpoint.lines = self.get_viewpoint_lines(visinfo)
-        viewpoint.clipping_planes = self.get_viewpoint_clipping_planes(visinfo)
-        viewpoint.bitmaps = self.get_viewpoint_bitmaps(visinfo)
-        return viewpoint
-
-    def get_viewpoint_components(self, visinfo):
-        if "Components" not in visinfo:
-            return None
-        components = bcf.data.Components()
-        data = visinfo["Components"]
-        if "ViewSetupHints" in data:
-            view_setup_hints = bcf.data.ViewSetupHints()
-            optional_keys = {
-                "spaces_visible": "@SpacesVisible",
-                "space_boundaries_visible": "@SpaceBoundariesVisible",
-                "openings_visible": "@OpeningsVisible",
-            }
-            for key, value in optional_keys.items():
-                if value in data["ViewSetupHints"]:
-                    setattr(view_setup_hints, key, data["ViewSetupHints"][value])
-            components.view_setup_hints = view_setup_hints
-        if "Selection" in data and "Component" in data["Selection"]:
-            for item in data["Selection"]["Component"]:
-                components.selection.append(self.get_component(item))
-        if "Visibility" in data:
-            component_visibility = bcf.data.ComponentVisibility()
-            if "@DefaultVisibility" in data["Visibility"]:
-                component_visibility.default_visibility = data["Visibility"]["@DefaultVisibility"]
-            if "Exceptions" in data["Visibility"] and "Component" in data["Visibility"]["Exceptions"]:
-                for item in data["Visibility"]["Exceptions"]["Component"]:
-                    component_visibility.exceptions.append(self.get_component(item))
-            components.visibility = component_visibility
-        if "Coloring" in data and "Color" in data["Coloring"]:
-            for item in data["Coloring"]["Color"]:
-                color = bcf.data.Color()
-                color.color = item["@Color"]
-                for item2 in item["Component"]:
-                    color.components.append(self.get_component(item2))
-                components.coloring.append(color)
-        return components
-
-    def get_viewpoint_orthogonal_camera(self, visinfo):
-        if "OrthogonalCamera" not in visinfo:
-            return None
-        camera = bcf.data.OrthogonalCamera()
-        data = visinfo["OrthogonalCamera"]
-        self.set_vector(camera.camera_view_point, data["CameraViewPoint"])
-        self.set_vector(camera.camera_direction, data["CameraDirection"])
-        self.set_vector(camera.camera_up_vector, data["CameraUpVector"])
-        camera.view_to_world_scale = data["ViewToWorldScale"]
-        return camera
-
-    def get_viewpoint_perspective_camera(self, visinfo):
-        if "PerspectiveCamera" not in visinfo:
-            return None
-        camera = bcf.data.PerspectiveCamera()
-        data = visinfo["PerspectiveCamera"]
-        self.set_vector(camera.camera_view_point, data["CameraViewPoint"])
-        self.set_vector(camera.camera_direction, data["CameraDirection"])
-        self.set_vector(camera.camera_up_vector, data["CameraUpVector"])
-        camera.field_of_view = data["FieldOfView"]
-        return camera
-
-    def get_viewpoint_lines(self, visinfo):
-        if "Lines" not in visinfo:
-            return []
-        lines = []
-        for item in visinfo["Lines"]["Line"]:
-            line = bcf.data.Line()
-            self.set_vector(line.start_point, item["StartPoint"])
-            self.set_vector(line.end_point, item["EndPoint"])
-            lines.append(line)
-        return lines
-
-    def get_viewpoint_clipping_planes(self, visinfo):
-        if "ClippingPlanes" not in visinfo:
-            return []
-        planes = []
-        for item in visinfo["ClippingPlanes"]["ClippingPlane"]:
-            plane = bcf.data.ClippingPlane()
-            self.set_vector(plane.location, item["Location"])
-            self.set_vector(plane.direction, item["Direction"])
-            planes.append(plane)
-        return planes
-
-    def get_viewpoint_bitmaps(self, visinfo):
-        if "Bitmap" not in visinfo:
-            return []
-        bitmaps = []
-        for item in visinfo["Bitmap"]:
-            bitmap = bcf.data.Bitmap()
-            bitmap.reference = item["Reference"]
-            bitmap.bitmap_type = item["Bitmap"].upper()
-            self.set_vector(bitmap.location, item["Location"])
-            self.set_vector(bitmap.normal, item["Normal"])
-            self.set_vector(bitmap.up, item["Up"])
-            bitmap.height = item["Height"]
-            bitmaps.append(bitmap)
-        return bitmaps
-
-    def set_vector(self, to_obj, from_xml):
-        to_obj.x = from_xml["X"]
-        to_obj.y = from_xml["Y"]
-        to_obj.z = from_xml["Z"]
-
-    def get_component(self, data):
-        component = bcf.data.Component()
-        optional_keys = {
-            "originating_system": "OriginatingSystem",
-            "authoring_tool_id": "AuthoringToolId",
-            "ifc_guid": "@IfcGuid",
-        }
-        for key, value in optional_keys.items():
-            if value in data:
-                setattr(component, key, data[value])
-        return component
-
-    def close_project(self):
-        shutil.rmtree(self.filepath)
-
-    def _read_xml(self, filename, xsd):
-        schema = XMLSchema(os.path.join(cwd, "xsd", xsd))
-        filepath = os.path.join(self.filepath, filename)
-        (data, errors) = schema.to_dict(filepath, validation="lax")
-        for error in errors:
-            self.logger.error(error)
-        return data
-
-    def _create_element(self, parent, name, attributes={}, text=None):
-        element = self.document.createElement(name)
-        for key, value in attributes.items():
-            if isinstance(value, bool):
-                element.setAttribute(key, str(value).lower())
-            elif value:
-                element.setAttribute(key, value)
-        if text is not None:
-            text = self.document.createTextNode(str(text))
-            element.appendChild(text)
-        parent.appendChild(element)
-        return element
-
-    def __del__(self):
-        self.close_project()
+def extract_project(filepath):
+    if not filepath:
+        return
+    zip_file = zipfile.ZipFile(filepath)
+    filepath = tempfile.mkdtemp()
+    zip_file.extractall(filepath)
+    return filepath

src/bcf/bcf/v2/bcfxml.py

@@ -0,0 +1,771 @@
+import os
+import uuid
+import shutil
+import zipfile
+import logging
+import tempfile
+import bcf.v2.data
+from datetime import datetime
+from xml.dom import minidom
+from xmlschema import XMLSchema
+from contextlib import contextmanager
+from shutil import copyfile
+
+
+cwd = os.path.dirname(os.path.realpath(__file__))
+
+
+@contextmanager
+def cd(newdir):
+    prevdir = os.getcwd()
+    os.chdir(os.path.expanduser(newdir))
+    try:
+        yield
+    finally:
+        os.chdir(prevdir)
+
+
+class BcfXml:
+    def __init__(self):
+        self.filepath = None
+        self.logger = logging.getLogger("bcfxml")
+        self.author = "john@doe.com"
+        self.project = bcf.v2.data.Project()
+        self.version = "2.1"
+        self.topics = {}
+
+    def new_project(self):
+        self.project.project_id = str(uuid.uuid4())
+        self.project.name = "New Project"
+        self.topics = {}
+        if self.filepath:
+            self.close_project()
+        self.filepath = tempfile.mkdtemp()
+        self.edit_project()
+        self.edit_version()
+
+    def get_project(self, filepath=None):
+        if not filepath:
+            return self.project
+        if os.path.isfile(os.path.join(self.filepath, "project.bcfp")):
+            data = self._read_xml("project.bcfp", "project.xsd")
+            self.project.extension_schema = data["ExtensionSchema"]
+            if "Project" in data:
+                self.project.project_id = data["Project"]["@ProjectId"]
+                self.project.name = data["Project"].get("Name")
+        return self.project
+
+    def edit_project(self):
+        self.document = minidom.Document()
+        root = self._create_element(self.document, "ProjectExtension")
+        project = self._create_element(root, "Project", {"ProjectId": self.project.project_id})
+        self._create_element(project, "Name", text=self.project.name)
+        self._create_element(root, "ExtensionSchema", text="extensions.xsd")
+        with open(os.path.join(self.filepath, "project.bcfp"), "wb") as f:
+            f.write(self.document.toprettyxml(encoding="utf-8"))
+
+    def save_project(self, filepath):
+        with cd(self.filepath):
+            zip_file = zipfile.ZipFile(filepath, "w", zipfile.ZIP_DEFLATED)
+            for root, dirs, files in os.walk("./"):
+                for file in files:
+                    zip_file.write(os.path.join(root, file))
+            zip_file.close()
+
+    def get_version(self):
+        data = self._read_xml("bcf.version", "version.xsd")
+        self.version = data["@VersionId"]
+        return self.version
+
+    def edit_version(self):
+        self.document = minidom.Document()
+        root = self._create_element(self.document, "Version", {"VersionId": self.version})
+        version = self._create_element(root, "DetailedVersion", text=self.version)
+        with open(os.path.join(self.filepath, "bcf.version"), "wb") as f:
+            f.write(self.document.toprettyxml(encoding="utf-8"))
+
+    def get_topics(self):
+        self.topics = {}
+        topics = []
+        subdirs = []
+        for (dirpath, dirnames, filenames) in os.walk(self.filepath):
+            subdirs = dirnames
+            break
+        for subdir in subdirs:
+            try:
+                uuid.UUID(subdir)
+            except ValueError:
+                continue
+            if not os.path.exists(os.path.join(self.filepath, subdir, "markup.bcf")):
+                continue
+            self.topics[subdir] = self.get_topic(subdir)
+        return self.topics
+
+    def get_header(self, guid):
+        data = self._read_xml(os.path.join(guid, "markup.bcf"), "markup.xsd")
+        if "Header" not in data:
+            return
+        header = bcf.v2.data.Header()
+        for item in data["Header"]["File"]:
+            header_file = bcf.v2.data.HeaderFile()
+            optional_keys = {
+                "filename": "Filename",
+                "date": "Date",
+                "reference": "Reference",
+                "ifc_project": "@IfcProject",
+                "ifc_spatial_structure_element": "@IfcSpatialStructureElement",
+                "is_external": "@isExternal",
+            }
+            for key, value in optional_keys.items():
+                if value in item:
+                    setattr(header_file, key, item[value])
+            header.files.append(header_file)
+        self.topics[guid].header = header
+        return header
+
+    def get_topic(self, guid):
+        if guid in self.topics:
+            return self.topics[guid]
+        data = self._read_xml(os.path.join(guid, "markup.bcf"), "markup.xsd")
+        topic = bcf.v2.data.Topic()
+        self.topics[guid] = topic
+
+        mandatory_keys = {
+            "guid": "@Guid",
+            "title": "Title",
+            "creation_date": "CreationDate",
+            "creation_author": "CreationAuthor",
+        }
+        for key, value in mandatory_keys.items():
+            setattr(topic, key, data["Topic"][value])
+
+        optional_keys = {
+            "priority": "Priority",
+            "index": "Index",
+            "labels": "Labels",
+            "reference_links": "ReferenceLink",
+            "modified_date": "ModifiedDate",
+            "modified_author": "ModifiedAuthor",
+            "due_date": "DueDate",
+            "assigned_to": "AssignedTo",
+            "stage": "Stage",
+            "description": "Description",
+            "topic_status": "@TopicStatus",
+            "topic_type": "@TopicType",
+        }
+        for key, value in optional_keys.items():
+            if value in data["Topic"]:
+                setattr(topic, key, data["Topic"][value])
+
+        if "BimSnippet" in data["Topic"]:
+            bim_snippet = bcf.v2.data.BimSnippet()
+            keys = {
+                "snippet_type": "@SnippetType",
+                "is_external": "@IsExternal",
+                "reference": "Reference",
+                "reference_schema": "ReferenceSchema",
+            }
+            for key, value in keys.items():
+                if value in data["Topic"]["BimSnippet"]:
+                    setattr(bim_snippet, key, data["Topic"]["BimSnippet"][value])
+            topic.bim_snippet = bim_snippet
+
+        if "DocumentReference" in data["Topic"]:
+            for item in data["Topic"]["DocumentReference"]:
+                document_reference = bcf.v2.data.DocumentReference()
+                keys = {
+                    "referenced_document": "ReferencedDocument",
+                    "is_external": "@IsExternal",
+                    "guid": "@Guid",
+                    "description": "Description",
+                }
+                for key, value in keys.items():
+                    if value in item:
+                        setattr(document_reference, key, item[value])
+                topic.document_references.append(document_reference)
+
+        if "RelatedTopic" in data["Topic"]:
+            for item in data["Topic"]["RelatedTopic"]:
+                related_topic = bcf.v2.data.RelatedTopic()
+                related_topic.guid = item["@Guid"]
+                topic.related_topics.append(related_topic)
+        return topic
+
+    def add_topic(self, topic=None):
+        if topic is None:
+            topic = bcf.v2.data.Topic()
+        if not topic.guid:
+            topic.guid = str(uuid.uuid4())
+        if not topic.title:
+            topic.title = "New Topic"
+        os.mkdir(os.path.join(self.filepath, topic.guid))
+        self.edit_topic(topic)
+        return topic
+
+    def edit_topic(self, topic):
+        if not topic.creation_date:
+            topic.creation_date = datetime.utcnow().isoformat()
+            topic.creation_author = self.author
+        else:
+            topic.modified_date = datetime.utcnow().isoformat()
+            topic.modified_author = self.author
+
+        self.document = minidom.Document()
+        root = self._create_element(self.document, "Markup")
+
+        self.write_header(topic.header, root)
+
+        topic_el = self._create_element(
+            root,
+            "Topic",
+            {
+                "Guid": topic.guid,
+                "TopicType": topic.topic_type,
+                "TopicStatus": topic.topic_status,
+            },
+        )
+
+        for reference_link in topic.reference_links:
+            self._create_element(topic_el, "ReferenceLink", text=reference_link)
+
+        text_map = {
+            "Title": topic.title,
+            "Priority": topic.priority,
+            "Index": topic.index,
+        }
+        for key, value in text_map.items():
+            if value:
+                self._create_element(topic_el, key, text=value)
+
+        for label in topic.labels:
+            self._create_element(topic_el, "Labels", text=label)
+
+        text_map = {
+            "CreationDate": topic.creation_date,
+            "CreationAuthor": topic.creation_author,
+            "ModifiedDate": topic.modified_date,
+            "ModifiedAuthor": topic.modified_author,
+            "DueDate": topic.due_date,
+            "AssignedTo": topic.assigned_to,
+            "Stage": topic.stage,
+            "Description": topic.description,
+        }
+        for key, value in text_map.items():
+            if value:
+                self._create_element(topic_el, key, text=value)
+
+        if topic.bim_snippet:
+            bim_snippet = self._create_element(
+                topic_el,
+                "BimSnippet",
+                {"SnippetType": topic.bim_snippet.snippet_type, "isExternal": topic.bim_snippet.is_external},
+            )
+            self._create_element(bim_snippet, "Reference", text=topic.bim_snippet.reference)
+            self._create_element(bim_snippet, "ReferenceSchema", text=topic.bim_snippet.reference_schema)
+        for reference in topic.document_references:
+            reference_el = self._create_element(
+                topic_el, "DocumentReference", {"Guid": reference.guid, "isExternal": reference.is_external}
+            )
+            self._create_element(reference_el, "ReferencedDocument", text=reference.referenced_document)
+            self._create_element(reference_el, "Description", text=reference.description)
+        for related_topic in topic.related_topics:
+            self._create_element(topic_el, "RelatedTopic", {"Guid": related_topic.guid})
+
+        self.write_comments(topic.comments, root)
+        self.write_viewpoints(topic.viewpoints, root, topic)
+
+        with open(os.path.join(self.filepath, topic.guid, "markup.bcf"), "wb") as f:
+            f.write(self.document.toprettyxml(encoding="utf-8"))
+
+    def write_header(self, header, root):
+        if not header or not header.files:
+            return
+        header_el = self._create_element(root, "Header")
+        for f in header.files:
+            file_el = self._create_element(
+                header_el,
+                "File",
+                {
+                    "IfcProject": f.ifc_project,
+                    "IfcSpatialStructureElement": f.ifc_spatial_structure_element,
+                    "isExternal": f.is_external,
+                },
+            )
+            if f.filename:
+                self._create_element(file_el, "Filename", text=f.filename)
+            if f.date:
+                self._create_element(file_el, "Date", text=f.date)
+            if f.reference:
+                self._create_element(file_el, "Reference", text=f.reference)
+
+    def write_comments(self, comments, root):
+        for comment in comments.values():
+            comment_el = self._create_element(root, "Comment", {"Guid": comment.guid})
+            text_map = {
+                "Date": comment.date,
+                "Author": comment.author,
+                "Comment": comment.comment,
+                "ModifiedDate": comment.modified_date,
+                "ModifiedAuthor": comment.modified_author,
+            }
+            for key, value in text_map.items():
+                if value:
+                    self._create_element(comment_el, key, text=value)
+            if comment.viewpoint:
+                self._create_element(comment_el, "Viewpoint", {"Guid": comment.viewpoint.guid})
+
+    def add_comment(self, topic, comment=None):
+        if comment is None:
+            comment = bcf.v2.data.Comment()
+        if not comment.guid:
+            comment.guid = str(uuid.uuid4())
+        if not comment.comment:
+            comment.comment = "'Free software' is a matter of liberty, not price. To understand the concept, you should think of 'free' as in 'free speech,' not as in 'free beer'."
+        topic.comments[comment.guid] = comment
+        self.edit_comment(comment, topic)
+
+    def edit_comment(self, comment, topic):
+        if not comment.date:
+            comment.date = datetime.utcnow().isoformat()
+            comment.author = self.author
+        else:
+            comment.modified_date = datetime.utcnow().isoformat()
+            comment.modified_author = self.author
+        self.edit_topic(topic)
+
+    def delete_comment(self, guid, topic):
+        if guid in topic.comments:
+            del topic.comments[guid]
+        self.edit_topic(topic)
+
+    def delete_topic(self, guid):
+        if guid in self.topics:
+            del self.topics[guid]
+        shutil.rmtree(os.path.join(self.filepath, guid))
+
+    def write_viewpoints(self, viewpoints, root, topic):
+        for viewpoint in viewpoints.values():
+            viewpoint_el = self._create_element(root, "Viewpoints", {"Guid": viewpoint.guid})
+            text_map = {"Viewpoint": viewpoint.viewpoint, "Snapshot": viewpoint.snapshot, "Index": viewpoint.index}
+            for key, value in text_map.items():
+                if value:
+                    self._create_element(viewpoint_el, key, text=value)
+            self.write_viewpoint(viewpoint, topic)
+
+    def write_viewpoint(self, viewpoint, topic):
+        document = minidom.Document()
+        root = self._create_element(document, "VisualizationInfo", {"Guid": viewpoint.guid})
+        self.write_viewpoint_components(viewpoint, root)
+        self.write_viewpoint_orthogonal_camera(viewpoint, root)
+        self.write_viewpoint_perspective_camera(viewpoint, root)
+        self.write_viewpoint_lines(viewpoint, root)
+        self.write_viewpoint_clipping_planes(viewpoint, root)
+        self.write_viewpoint_bitmaps(viewpoint, root)
+        with open(os.path.join(self.filepath, topic.guid, viewpoint.viewpoint), "wb") as f:
+            f.write(document.toprettyxml(encoding="utf-8"))
+
+    def write_viewpoint_components(self, viewpoint, parent):
+        if not viewpoint.components:
+            return
+        components_el = self._create_element(parent, "Components")
+        if viewpoint.components.view_setup_hints:
+            view_setup_hints = self._create_element(
+                components_el,
+                "ViewSetupHints",
+                {
+                    "SpacesVisible": viewpoint.components.view_setup_hints.spaces_visible,
+                    "SpaceBoundariesVisible": viewpoint.components.view_setup_hints.space_boundaries_visible,
+                    "OpeningsVisible": viewpoint.components.view_setup_hints.openings_visible,
+                },
+            )
+        if viewpoint.components.selection:
+            selection_el = self._create_element(components_el, "Selection")
+        for selection in viewpoint.components.selection:
+            self.write_component(selection, selection_el)
+        visibility = self._create_element(
+            components_el, "Visibility", {"DefaultVisibility": viewpoint.components.visibility.default_visibility}
+        )
+        if viewpoint.components.visibility.exceptions:
+            exceptions_el = self._create_element(visibility, "Exceptions")
+        for exception in viewpoint.components.visibility.exceptions:
+            self.write_component(exception, exceptions_el)
+        if viewpoint.components.coloring:
+            coloring_el = self._create_element(components_el, "Coloring")
+        for color in viewpoint.components.coloring:
+            color_el = self._create_element(coloring_el, "Color", {"Color": color.color})
+            for component in color.components:
+                self.write_component(component, color_el)
+
+    def write_viewpoint_orthogonal_camera(self, viewpoint, parent):
+        if not viewpoint.orthogonal_camera:
+            return
+        camera = viewpoint.orthogonal_camera
+        camera_el = self._create_element(parent, "OrthogonalCamera")
+        camera_view_point = self._create_element(camera_el, "CameraViewPoint")
+        self.write_vector(camera_view_point, camera.camera_view_point)
+        camera_direction = self._create_element(camera_el, "CameraDirection")
+        self.write_vector(camera_direction, camera.camera_direction)
+        camera_up_vector = self._create_element(camera_el, "CameraUpVector")
+        self.write_vector(camera_up_vector, camera.camera_up_vector)
+        self._create_element(camera_el, "ViewToWorldScale", text=camera.view_to_world_scale)
+
+    def write_viewpoint_perspective_camera(self, viewpoint, parent):
+        if not viewpoint.perspective_camera:
+            return
+        camera = viewpoint.perspective_camera
+        camera_el = self._create_element(parent, "PerspectiveCamera")
+        camera_view_point = self._create_element(camera_el, "CameraViewPoint")
+        self.write_vector(camera_view_point, camera.camera_view_point)
+        camera_direction = self._create_element(camera_el, "CameraDirection")
+        self.write_vector(camera_direction, camera.camera_direction)
+        camera_up_vector = self._create_element(camera_el, "CameraUpVector")
+        self.write_vector(camera_up_vector, camera.camera_up_vector)
+        self._create_element(camera_el, "FieldOfView", text=camera.field_of_view)
+
+    def write_viewpoint_lines(self, viewpoint, parent):
+        if not viewpoint.lines:
+            return
+        lines_el = self._create_element(parent, "Lines")
+        for line in viewpoint.lines:
+            line_el = self._create_element(lines_el, "Line")
+            start_point_el = self._create_element(line_el, "StartPoint")
+            self.write_vector(start_point_el, line.start_point)
+            end_point_el = self._create_element(line_el, "EndPoint")
+            self.write_vector(end_point_el, line.end_point)
+
+    def write_viewpoint_clipping_planes(self, viewpoint, parent):
+        if not viewpoint.clipping_planes:
+            return
+        planes_el = self._create_element(parent, "ClippingPlanes")
+        for plane in viewpoint.clipping_planes:
+            plane_el = self._create_element(planes_el, "ClippingPlane")
+            location_el = self._create_element(plane_el, "Location")
+            self.write_vector(location_el, plane.location)
+            direction_el = self._create_element(plane_el, "Direction")
+            self.write_vector(direction_el, plane.direction)
+
+    def write_viewpoint_bitmaps(self, viewpoint, parent):
+        if not viewpoint.bitmaps:
+            return
+        for bitmap in viewpoint.bitmaps:
+            bitmap_el = self._create_element(parent, "Bitmap")
+
+            text_map = {"Bitmap": bitmap.bitmap_format, "Reference": bitmap.reference}
+            for key, value in text_map.items():
+                self._create_element(bitmap_el, key, text=value)
+
+            location_el = self._create_element(bitmap_el, "Location")
+            self.write_vector(location_el, bitmap.location)
+            normal_el = self._create_element(bitmap_el, "Normal")
+            self.write_vector(normal_el, bitmap.normal)
+            up_el = self._create_element(bitmap_el, "Up")
+            self.write_vector(up_el, bitmap.up)
+
+            self._create_element(bitmap_el, "Height", text=bitmap.height)
+
+    def write_vector(self, parent, from_obj):
+        self._create_element(parent, "X", text=from_obj.x)
+        self._create_element(parent, "Y", text=from_obj.y)
+        self._create_element(parent, "Z", text=from_obj.z)
+
+    def write_component(self, data, parent):
+        component_el = self._create_element(parent, "Component", {"IfcGuid": data.ifc_guid})
+        text_map = {"OriginatingSystem": data.originating_system, "AuthoringToolId": data.authoring_tool_id}
+        for key, value in text_map.items():
+            if value:
+                self._create_element(component_el, key, text=value)
+
+    def add_viewpoint(self, topic, viewpoint=None):
+        if not viewpoint:
+            viewpoint = bcf.v2.data.Viewpoint()
+        if not viewpoint.guid:
+            viewpoint.guid = str(uuid.uuid4())
+        if not viewpoint.viewpoint:
+            viewpoint.viewpoint = f"{viewpoint.guid}.bcfv"
+        if viewpoint.snapshot:
+            topic_filepath = os.path.join(self.filepath, topic.guid)
+            filepath = os.path.join(topic_filepath, viewpoint.snapshot)
+            if not os.path.exists(filepath):
+                filename = viewpoint.guid + os.path.splitext(viewpoint.snapshot)[-1]
+                copyfile(viewpoint.snapshot, os.path.join(topic_filepath, filename))
+                viewpoint.snapshot = filename
+        topic.viewpoints[viewpoint.guid] = viewpoint
+        self.edit_topic(topic)
+
+    def delete_viewpoint(self, guid, topic):
+        if guid not in topic.viewpoints:
+            return
+        viewpoint = topic.viewpoints[guid]
+        if viewpoint.snapshot:
+            filepath = os.path.join(self.filepath, topic.guid, viewpoint.snapshot)
+            if os.path.exists(filepath):
+                os.remove(filepath)
+        if viewpoint.viewpoint:
+            filepath = os.path.join(self.filepath, topic.guid, viewpoint.viewpoint)
+            if os.path.exists(filepath):
+                os.remove(filepath)
+        for bitmap in viewpoint.bitmaps:
+            if not bitmap.reference:
+                continue
+            filepath = os.path.join(self.filepath, topic.guid, bitmap.reference)
+            if os.path.exists(filepath):
+                os.remove(filepath)
+        del topic.viewpoints[guid]
+        self.edit_topic(topic)
+
+    def delete_file(self, topic, index):
+        if not topic.header:
+            return
+        f = topic.header.files.pop(index)
+        filepath = os.path.join(self.filepath, topic.guid, f.reference)
+        if not f.is_external and os.path.exists(filepath):
+            os.remove(filepath)
+        self.edit_topic(topic)
+
+    def delete_bim_snippet(self, topic):
+        if not topic.bim_snippet:
+            return
+        if topic.bim_snippet.reference and not topic.bim_snippet.is_external:
+            filepath = os.path.join(self.filepath, topic.guid, topic.bim_snippet.reference)
+            if os.path.exists(filepath):
+                os.remove(filepath)
+        topic.bim_snippet = None
+        self.edit_topic(topic)
+
+    def delete_document_reference(self, topic, index):
+        document_reference = topic.document_references[index]
+        if document_reference.referenced_document and not document_reference.is_external:
+            filepath = os.path.join(self.filepath, topic.guid, document_reference.referenced_document)
+            if os.path.exists(filepath):
+                os.remove(filepath)
+        del topic.document_references[index]
+        self.edit_topic(topic)
+
+    def add_document_reference(self, topic, document_reference):
+        if os.path.exists(document_reference.referenced_document):
+            topic_filepath = os.path.join(self.filepath, topic.guid)
+            filename = os.path.basename(document_reference.referenced_document)
+            copyfile(document_reference.referenced_document, os.path.join(topic_filepath, filename))
+            document_reference.referenced_document = filename
+            document_reference.is_external = False
+        else:
+            document_reference.is_external = True
+        if not document_reference.guid:
+            document_reference.guid = str(uuid.uuid4())
+        topic.document_references.append(document_reference)
+        self.edit_topic(topic)
+
+    def add_bim_snippet(self, topic, bim_snippet):
+        if topic.bim_snippet:
+            self.delete_bim_snippet(topic)
+        if os.path.exists(bim_snippet.reference):
+            topic_filepath = os.path.join(self.filepath, topic.guid)
+            filename = os.path.basename(bim_snippet.reference)
+            copyfile(bim_snippet.reference, os.path.join(topic_filepath, filename))
+            bim_snippet.reference = filename
+            bim_snippet.is_external = False
+        else:
+            bim_snippet.is_external = True
+        topic.bim_snippet = bim_snippet
+        self.edit_topic(topic)
+
+    def add_file(self, topic, header_file):
+        if os.path.exists(header_file.reference):
+            topic_filepath = os.path.join(self.filepath, topic.guid)
+            header_file.filename = os.path.basename(header_file.reference)
+            copyfile(header_file.reference, os.path.join(topic_filepath, header_file.filename))
+            header_file.reference = header_file.filename
+            header_file.is_external = False
+        header_file.date = datetime.utcnow().isoformat()
+        if not topic.header:
+            topic.header = bcf.v2.data.Header()
+        topic.header.files.append(header_file)
+        self.edit_topic(topic)
+
+    def get_comments(self, guid):
+        comments = {}
+        data = self._read_xml(os.path.join(guid, "markup.bcf"), "markup.xsd")
+        if "Comment" not in data:
+            return comments
+        for item in data["Comment"]:
+            comment = bcf.v2.data.Comment()
+            mandatory_keys = {"guid": "@Guid", "date": "Date", "author": "Author", "comment": "Comment"}
+            for key, value in mandatory_keys.items():
+                setattr(comment, key, item[value])
+            optional_keys = {"modified_date": "ModifiedDate", "modified_author": "ModifiedAuthor"}
+            for key, value in optional_keys.items():
+                if value in item:
+                    setattr(comment, key, item[value])
+            if "Viewpoint" in item:
+                viewpoint = bcf.v2.data.Viewpoint()
+                viewpoint.guid = item["Viewpoint"]["@Guid"]
+                comment.viewpoint = viewpoint
+            comments[comment.guid] = comment
+        self.topics[guid].comments = comments
+        return comments
+
+    def get_viewpoints(self, guid):
+        viewpoints = {}
+        data = self._read_xml(os.path.join(guid, "markup.bcf"), "markup.xsd")
+        if "Viewpoints" not in data:
+            return viewpoints
+        for item in data["Viewpoints"]:
+            viewpoint = self.get_viewpoint(item, guid)
+            viewpoints[viewpoint.guid] = viewpoint
+        self.topics[guid].viewpoints = viewpoints
+        return viewpoints
+
+    def get_viewpoint(self, data, topic_guid):
+        viewpoint = bcf.v2.data.Viewpoint()
+        viewpoint.guid = data["@Guid"]
+        optional_keys = {"viewpoint": "Viewpoint", "snapshot": "Snapshot", "index": "Index"}
+        for key, value in optional_keys.items():
+            if value in data:
+                setattr(viewpoint, key, data[value])
+        visinfo = self._read_xml(os.path.join(topic_guid, viewpoint.viewpoint), "visinfo.xsd")
+        viewpoint.components = self.get_viewpoint_components(visinfo)
+        viewpoint.orthogonal_camera = self.get_viewpoint_orthogonal_camera(visinfo)
+        viewpoint.perspective_camera = self.get_viewpoint_perspective_camera(visinfo)
+        viewpoint.lines = self.get_viewpoint_lines(visinfo)
+        viewpoint.clipping_planes = self.get_viewpoint_clipping_planes(visinfo)
+        viewpoint.bitmaps = self.get_viewpoint_bitmaps(visinfo)
+        return viewpoint
+
+    def get_viewpoint_components(self, visinfo):
+        if "Components" not in visinfo:
+            return None
+        components = bcf.v2.data.Components()
+        data = visinfo["Components"]
+        if "ViewSetupHints" in data:
+            view_setup_hints = bcf.v2.data.ViewSetupHints()
+            optional_keys = {
+                "spaces_visible": "@SpacesVisible",
+                "space_boundaries_visible": "@SpaceBoundariesVisible",
+                "openings_visible": "@OpeningsVisible",
+            }
+            for key, value in optional_keys.items():
+                if value in data["ViewSetupHints"]:
+                    setattr(view_setup_hints, key, data["ViewSetupHints"][value])
+            components.view_setup_hints = view_setup_hints
+        if "Selection" in data and "Component" in data["Selection"]:
+            for item in data["Selection"]["Component"]:
+                components.selection.append(self.get_component(item))
+        if "Visibility" in data:
+            component_visibility = bcf.v2.data.ComponentVisibility()
+            if "@DefaultVisibility" in data["Visibility"]:
+                component_visibility.default_visibility = data["Visibility"]["@DefaultVisibility"]
+            if "Exceptions" in data["Visibility"] and "Component" in data["Visibility"]["Exceptions"]:
+                for item in data["Visibility"]["Exceptions"]["Component"]:
+                    component_visibility.exceptions.append(self.get_component(item))
+            components.visibility = component_visibility
+        if "Coloring" in data and "Color" in data["Coloring"]:
+            for item in data["Coloring"]["Color"]:
+                color = bcf.v2.data.Color()
+                color.color = item["@Color"]
+                for item2 in item["Component"]:
+                    color.components.append(self.get_component(item2))
+                components.coloring.append(color)
+        return components
+
+    def get_viewpoint_orthogonal_camera(self, visinfo):
+        if "OrthogonalCamera" not in visinfo:
+            return None
+        camera = bcf.v2.data.OrthogonalCamera()
+        data = visinfo["OrthogonalCamera"]
+        self.set_vector(camera.camera_view_point, data["CameraViewPoint"])
+        self.set_vector(camera.camera_direction, data["CameraDirection"])
+        self.set_vector(camera.camera_up_vector, data["CameraUpVector"])
+        camera.view_to_world_scale = data["ViewToWorldScale"]
+        return camera
+
+    def get_viewpoint_perspective_camera(self, visinfo):
+        if "PerspectiveCamera" not in visinfo:
+            return None
+        camera = bcf.v2.data.PerspectiveCamera()
+        data = visinfo["PerspectiveCamera"]
+        self.set_vector(camera.camera_view_point, data["CameraViewPoint"])
+        self.set_vector(camera.camera_direction, data["CameraDirection"])
+        self.set_vector(camera.camera_up_vector, data["CameraUpVector"])
+        camera.field_of_view = data["FieldOfView"]
+        return camera
+
+    def get_viewpoint_lines(self, visinfo):
+        if "Lines" not in visinfo:
+            return []
+        lines = []
+        for item in visinfo["Lines"]["Line"]:
+            line = bcf.v2.data.Line()
+            self.set_vector(line.start_point, item["StartPoint"])
+            self.set_vector(line.end_point, item["EndPoint"])
+            lines.append(line)
+        return lines
+
+    def get_viewpoint_clipping_planes(self, visinfo):
+        if "ClippingPlanes" not in visinfo:
+            return []
+        planes = []
+        for item in visinfo["ClippingPlanes"]["ClippingPlane"]:
+            plane = bcf.v2.data.ClippingPlane()
+            self.set_vector(plane.location, item["Location"])
+            self.set_vector(plane.direction, item["Direction"])
+            planes.append(plane)
+        return planes
+
+    def get_viewpoint_bitmaps(self, visinfo):
+        if "Bitmap" not in visinfo:
+            return []
+        bitmaps = []
+        for item in visinfo["Bitmap"]:
+            bitmap = bcf.v2.data.Bitmap()
+            bitmap.reference = item["Reference"]
+            bitmap.bitmap_format = item["Bitmap"].upper()
+            self.set_vector(bitmap.location, item["Location"])
+            self.set_vector(bitmap.normal, item["Normal"])
+            self.set_vector(bitmap.up, item["Up"])
+            bitmap.height = item["Height"]
+            bitmaps.append(bitmap)
+        return bitmaps
+
+    def set_vector(self, to_obj, from_xml):
+        to_obj.x = from_xml["X"]
+        to_obj.y = from_xml["Y"]
+        to_obj.z = from_xml["Z"]
+
+    def get_component(self, data):
+        component = bcf.v2.data.Component()
+        optional_keys = {
+            "originating_system": "OriginatingSystem",
+            "authoring_tool_id": "AuthoringToolId",
+            "ifc_guid": "@IfcGuid",
+        }
+        for key, value in optional_keys.items():
+            if value in data:
+                setattr(component, key, data[value])
+        return component
+
+    def close_project(self):
+        shutil.rmtree(self.filepath)
+
+    def _read_xml(self, filename, xsd):
+        schema = XMLSchema(os.path.join(cwd, "xsd", xsd))
+        filepath = os.path.join(self.filepath, filename)
+        (data, errors) = schema.to_dict(filepath, validation="lax")
+        for error in errors:
+            self.logger.error(error)
+        return data
+
+    def _create_element(self, parent, name, attributes={}, text=None):
+        element = self.document.createElement(name)
+        for key, value in attributes.items():
+            if isinstance(value, bool):
+                element.setAttribute(key, str(value).lower())
+            elif value:
+                element.setAttribute(key, value)
+        if text is not None:
+            text = self.document.createTextNode(str(text))
+            element.appendChild(text)
+        parent.appendChild(element)
+        return element
+
+    def __del__(self):
+        self.close_project()

src/bcf/bcf/v2/data.py

@@ -2,6 +2,7 @@ class Project:
     def __init__(self):
         self.project_id = ""
         self.name = ""
+        self.extension_schema = ""
 
 
 class BimSnippet:
@@ -156,7 +157,7 @@ class Bitmap:
     def __init__(self):
         self.reference = ""  # Only in BCF-XML
         self.bitmap_data = None  # Only in BCF-API
-        self.bitmap_type = "PNG"  # Enum of png or jpg
+        self.bitmap_format = "PNG"  # Enum of png or jpg
         self.location = Point()
         self.normal = Direction()
         self.up = Direction()

src/bcf/bcf/v3/bcfapi.py

@@ -0,0 +1,540 @@
+import uuid
+import time
+import json
+import urllib
+import requests
+import webbrowser
+import http.server
+import base64
+
+
+client_id, client_secret = "", ""
+
+
+class OAuthReceiver(http.server.BaseHTTPRequestHandler):
+    def do_GET(self):
+        query = urllib.parse.parse_qs(urllib.parse.urlparse(self.path).query)
+        self.server.auth_code = query.get("code", [""])[0]
+        self.server.auth_state = query.get("state", [""])[0]
+        self.send_response(200)
+        self.send_header("Content-type", "text/plain")
+        self.end_headers()
+        self.wfile.write("You have now authenticated :) You may now close this browser window.".encode("utf-8"))
+
+
+class Client:
+    def __init__(self, client_id, client_secret):
+        self.baseurl = None
+        self.access_token = ""
+        self.refresh_token = ""
+        self.access_token_expires_on = time.time()
+        self.refresh_token_expires_on = float("inf")
+        self.auth_endpoint = None
+        self.token_endpoint = None
+        self.client_id = client_id
+        self.client_secret = client_secret
+        self.version_ids = {}
+        self.version = None
+        self.auth_method = None
+        self.redirect_uri = None
+        self.api_baseurl = None
+
+    def get(self, endpoint, params=None, is_auth_required=False):
+        headers = {"Authorization": "Bearer " + self.get_access_token()}
+        return requests.get(f"{self.api_baseurl}{endpoint}", headers=headers, params=params or None).json()
+
+    def post(self, endpoint, data=None, params=None):
+        headers = {
+            "Authorization": "Bearer " + self.get_access_token(),
+            "Content-type": "application/json",
+        }
+        resp = requests.post(
+            f"{self.api_baseurl}{endpoint}",
+            headers=headers,
+            params=params or None,
+            data=data or None,
+        )
+        return resp.status_code, resp.text
+
+    def put(self, endpoint, data=None, params=None):
+        headers = {
+            "Authorization": "Bearer " + self.get_access_token(),
+            "Content-type": "application/json",
+        }
+        resp = requests.put(
+            f"{self.baseurl}{endpoint}",
+            headers=headers,
+            params=params or None,
+            data=data or None,
+        )
+        return resp.status_code, resp.text
+
+    def set_urls(self, base_url=None, redirect_uri=None):
+        self.baseurl = base_url
+        self.redirect_uri = redirect_uri
+
+    def delete(self, endpoint, params=None):
+        headers = {"Authorization": "Bearer " + self.get_access_token()}
+        resp = requests.put(
+            f"{self.baseurl}{endpoint}",
+            headers=headers,
+            params=params or None,
+        )
+        return resp.status_code
+
+    def get_access_token(self):
+        if self.access_token and self.access_token_expires_on > time.time():
+            return self.access_token
+        elif self.refresh_token and self.refresh_token_expires_on > time.time():
+            self.get_refresh_token()
+        else:
+            self.login()
+        return self.access_token
+
+    def get_auth_methods(self):
+        resp = requests.get(f"{self.baseurl}opencde/1.0/auth")
+        return resp.json()["supported_oauth2_flows"]
+
+    def get_versions(self):
+        resp = requests.get(f"{self.baseurl}opencde/versions")
+        resp_values = resp.json()["versions"]
+        for version in resp_values:
+            if "api_base_url" in version:
+                self.version_ids.update({version["version_id"]: version["api_base_url"]})
+        return self.version_ids
+
+    def set_version(self, version=None):
+        self.version = version
+        self.api_baseurl = self.version_ids[self.version]
+
+    def login(self):
+        resp = requests.get(f"{self.baseurl}opencde/1.0/auth")
+        values = resp.json()
+        self.auth_endpoint = values["oauth2_auth_url"]
+        self.token_endpoint = values["oauth2_token_url"]
+
+        with http.server.HTTPServer(("", 8080), OAuthReceiver) as server:
+            state = str(uuid.uuid4())
+            query = urllib.parse.urlencode(
+                {
+                    "client_id": self.client_id,
+                    "response_type": "code",
+                    "state": state,
+                    "redirect_uri": f"http://localhost:{server.server_address[1]}/{self.redirect_uri}",
+                }
+            )
+            if "?" in self.auth_endpoint:
+                webbrowser.open(f"{self.auth_endpoint}&{query}")
+            else:
+                webbrowser.open(f"{self.auth_endpoint}?{query}")
+            server.timeout = 100
+            server.state = state
+            server.handle_request()
+            if server.auth_code and server.auth_state == state:
+                data = {
+                    "grant_type": "authorization_code",
+                    "code": server.auth_code,
+                    "redirect_uri": f"http://localhost:{server.server_address[1]}/{self.redirect_uri}",
+                }
+                auth_string = f"{self.client_id}:{self.client_secret}"
+                header_string = base64.b64encode(auth_string.encode("utf-8")).decode("utf-8")
+                headers = {"Authorization": f"Basic {header_string}"}
+                self.set_tokens_from_response(requests.post(self.token_endpoint, data=data, headers=headers))
+
+    def get_refresh_token(self):
+        self.set_tokens_from_response(
+            requests.post(
+                self.token_endpoint,
+                params={
+                    "grant_type": "refresh_token",
+                    "refresh_token": self.refresh_token,
+                },
+            ).json()
+        )
+
+    def get_new_access_token(self):
+        auth_string = f"{self.client_id}:{self.client_secret}"
+        header_string = base64.b64encode(auth_string.encode("utf-8")).decode("utf-8")
+        headers = {"Authorization": f"Basic {header_string}"}
+        self.set_tokens_from_response(
+            requests.post(
+                self.token_endpoint,
+                data={
+                    "grant_type": "refresh_token",
+                    "refresh_token": self.refresh_token,
+                },
+                headers=headers,
+            ).json()
+        )
+
+    def set_auth_method(self, method="authorization_code_grant"):
+        if method != "authorization_code_grant":
+            raise NotImplementedError(f"{method} not supported")
+        else:
+            self.auth_method = method
+
+    def set_tokens_from_response(self, response):
+        response = response.json()
+        self.access_token = response["access_token"]
+        self.refresh_token = response["refresh_token"]
+        self.access_token_expires_on = time.time() + response["expires_in"]
+        if "refresh_token_expires_in" in response:
+            self.refresh_token_expires_on = time.time() + response["refresh_token_expires_in"]
+
+    def get_projects(self) -> list:
+        return self.get(
+            f"/projects",
+        )
+
+    def get_project(
+        self,
+        project_id="",
+    ) -> dict:
+        return self.get(
+            f"/projects/{project_id}",
+            {
+                "project_id": project_id,
+            },
+        )
+
+    def update_project(self, project_id="", data=None) -> dict:
+        url = f"{self.baseurl}/projects/{project_id}"
+        headers = {"Authorization": "Bearer " + self.get_access_token()}
+        resp = requests.put(url, headers=headers, data=data)
+        return resp.status_code, resp.text
+
+    def get_extensions(
+        self,
+        project_id="",
+    ) -> dict:
+        return self.get(
+            f"/projects/{project_id}/extensions",
+            {
+                "project_id": project_id,
+            },
+        )
+
+    def get_topics(
+        self,
+        project_id="",
+        topics="",
+        query_string=None,
+    ) -> list:
+        # return self.get(
+        #     f"/projects/{project_id}/topics",
+        #     {
+        #         "project_id": project_id,
+        #         "topics": topics,
+        #         "query_string": query_string,
+        #     },
+        # )
+        pass
+
+    def get_topic(self, project_id="", topic_id="") -> dict:
+        return self.get(
+            f"/projects/{project_id}/topics/{topic_id}",
+            {
+                "project_id": project_id,
+                "topic_id": topic_id,
+            },
+        )
+
+    def create_topic(self, project_id="", data=None):
+        return self.post(f"/projects/{project_id}/topics", data=data)
+
+    def update_topic(self, project_id="", topic_id="", data=None) -> dict:
+        return self.put(f"/projects/{project_id}/topics/{topic_id}", data=data)
+
+    def delete_topic(self, project_id="", topic_id=""):
+        return self.delete(f"/projects/{project_id}/topics/{topic_id}")
+
+    def get_snippet(self, project_id="", topic_id="") -> str:
+        return self.get(
+            f"/projects/{project_id}/topics/{topic_id}/snippet",
+            {
+                "project_id": project_id,
+                "topic_id": topic_id,
+            },
+        )
+
+    def update_snippet(self, project_id="", topic_id="", data=None):
+        return self.put(f"/projects/{project_id}/topics", data=data)
+
+    def get_files_information(self, project_id="") -> list:
+        return self.get(
+            f"/projects/{project_id}/files_information",
+            {
+                "project_id": project_id,
+            },
+        )
+
+    def get_files(self, project_id="", topic_id="") -> list:
+        return self.get(
+            f"/projects/{project_id}/topics/{topic_id}/files",
+            {
+                "project_id": project_id,
+                "topic_id": topic_id,
+            },
+        )
+
+    def update_files(
+        self,
+        project_id="",
+        topic_id="",
+        data=None,
+        params=None,
+    ):
+        return self.put(
+            f"/projects/{project_id}/topics/{topic_id}/files",
+            data=data,
+        )
+
+    def get_comments(self, project_id="", topic_id="") -> list:
+        pass
+
+    def create_comments(
+        self,
+        project_id="",
+        topic_id="",
+        data=None,
+        params=None,
+    ):
+        return self.post(
+            f"/projects/{project_id}/topics/{topic_id}/comments",
+            data=data,
+        )
+
+    def get_comment(self, project_id="", topic_id="", comment_id="") -> dict:
+        return self.get(
+            f"/projects/{project_id}/topics/{topic_id}/comments/{comment_id}",
+            {
+                "project_id": project_id,
+                "topic_id": topic_id,
+                "comment_id": comment_id,
+            },
+        )
+
+    def delete_comment(self, project_id="", topic_id="", comment_id=""):
+        return self.delete(f"/projects/{project_id}/topics/{topic_id}/comments/{comment_id}")
+
+    def update_comment(
+        self,
+        project_id="",
+        topic_id="",
+        comment_id="",
+        data=None,
+    ):
+        return self.put(
+            f"/projects/{project_id}/topics/{topic_id}/comments/{comment_id}",
+            data=data,
+        )
+
+    def get_viewpoints(self, project_id="", topic_id="") -> list:
+        return self.get(
+            f"/projects/{project_id}/topics/{topic_id}/viewpoints",
+            {
+                "project_id": project_id,
+                "topic_id": topic_id,
+            },
+        )
+
+    def create_viewpoints(self, project_id="", topic_id="", data=None):
+        return self.post(
+            f"/projects/{project_id}/topics/{topic_id}/viewpoints",
+            data=data,
+        )
+
+    def get_viewpoint(self, project_id="", topic_id="", viewpoint_id="") -> dict:
+        return self.get(
+            f"/projects/{project_id}/topics/{topic_id}/viewpoints/{viewpoint_id}",
+            {
+                "project_id": project_id,
+                "topic_id": topic_id,
+                "viewpoint_id": viewpoint_id,
+            },
+        )
+
+    def delete_viewpoint(
+        self,
+        project_id="",
+        topic_id="",
+        viewpoint_id="",
+    ):
+        return self.delete(
+            f"/projects/{project_id}/topics/{topic_id}/viewpoints/{viewpoint_id}",
+        )
+
+    def get_snapshot(self, project_id="", topic_id="", viewpoint_id="") -> str:
+        return self.get(
+            f"/projects/{project_id}/topics/{topic_id}/viewpoints/{viewpoint_id}/snapshot",
+            {
+                "project_id": project_id,
+                "topic_id": topic_id,
+                "viewpoint_id": viewpoint_id,
+            },
+        )
+
+    def get_bitmap(self, project_id="", topic_id="", viewpoint_id="", bitmap_id="") -> str:
+        return self.get(
+            f"/projects/{project_id}/topics/{topic_id}/viewpoints/{viewpoint_id}/bitmaps/{bitmap_id}",
+            {
+                "project_id": project_id,
+                "topic_id": topic_id,
+                "viewpoint_id": viewpoint_id,
+                "bitmap_id": bitmap_id,
+            },
+        )
+
+    def get_selection(self, project_id="", topic_id="", viewpoint_id="") -> dict:
+        return self.get(
+            f"/projects/{project_id}/topics/{topic_id}/viewpoints/{viewpoint_id}/selection",
+            {
+                "project_id": project_id,
+                "topic_id": topic_id,
+                "viewpoint_id": viewpoint_id,
+            },
+        )
+
+    def get_coloring(self, project_id="", topic_id="", viewpoint_id="") -> dict:
+        return self.get(
+            f"/projects/{project_id}/topics/{topic_id}/viewpoints/{viewpoint_id}/coloring",
+            {
+                "project_id": project_id,
+                "topic_id": topic_id,
+                "viewpoint_id": viewpoint_id,
+            },
+        )
+
+    def get_visibility(self, project_id="", topic_id="", viewpoint_id="") -> dict:
+        return self.get(
+            f"/projects/{project_id}/topics/{topic_id}/viewpoints/{viewpoint_id}/visibility",
+            {
+                "project_id": project_id,
+                "topic_id": topic_id,
+                "viewpoint_id": viewpoint_id,
+            },
+        )
+
+    def get_related_topics(self, project_id="", topic_id="") -> list:
+        return self.get(
+            f"/projects/{project_id}/topics/{topic_id}/related_topics",
+            {
+                "project_id": project_id,
+                "topic_id": topic_id,
+            },
+        )
+
+    def update_related_topics(
+        self,
+        project_id="",
+        topic_id="",
+        data=None,
+    ):
+        return self.put(
+            f"/projects/{project_id}/topics/{topic_id}/related_topics",
+            data=data,
+        )
+
+    def get_document_references(self, project_id="", topic_id="") -> list:
+        return self.get(
+            f"/projects/{project_id}/topics/{topic_id}/document_references",
+            {
+                "project_id": project_id,
+                "topic_id": topic_id,
+            },
+        )
+
+    def create_document_reference(
+        self,
+        project_id="",
+        topic_id="",
+        data=None,
+    ):
+        return self.post(
+            f"/projects/{project_id}/topics/{topic_id}/document_references",
+            data=data,
+        )
+
+    def update_document_references(
+        self,
+        project_id="",
+        topic_id="",
+        document_reference_id="",
+        data=None,
+    ):
+        return self.put(
+            f"/projects/{project_id}/topics/{topic_id}/document_references/{document_reference_id}",
+            data=data,
+        )
+
+    def get_documents(self, project_id="", topic_id="") -> list:
+        return self.get(
+            f"/projects/{project_id}/topics/{topic_id}/documents",
+            {
+                "project_id": project_id,
+                "topic_id": topic_id,
+            },
+        )
+
+    def create_document(
+        self,
+        project_id="",
+        topic_id="",
+        guid=None,
+        data=None,
+    ):
+        headers = {
+            "Authorization": "Bearer " + self.get_access_token(),
+            "Content-type": "application/octet-stream",
+        }
+        response = requests.post(
+            f"/projects/{project_id}/topics/{topic_id}/documents",
+            data=data,
+            params={guid},
+            headers=headers,
+        )
+
+    def get_document(self, project_id="", topic_id="", document_id="") -> str:
+        return self.get(
+            f"/projects/{project_id}/topics/{topic_id}/documents/{document_id}",
+            {
+                "project_id": project_id,
+                "topic_id": topic_id,
+                "document_id": document_id,
+            },
+        )
+
+    def get_topics_events(self, project_id="") -> list:
+        return self.get(
+            f"/projects/{project_id}/topics/events",
+            {
+                "project_id": project_id,
+            },
+        )
+
+    def get_topic_events(self, project_id="", topic_id="") -> list:
+        return self.get(
+            f"/projects/{project_id}/topics/{topic_id}/events",
+            {
+                "project_id": project_id,
+                "topic_id": topic_id,
+            },
+        )
+
+    def get_comments_events(self, project_id="") -> list:
+        return self.get(
+            f"/projects/{project_id}/topics/comments/events",
+            {
+                "project_id": project_id,
+            },
+        )
+
+    def get_comment_events(self, project_id="", topic_id="", comment_id="") -> list:
+        return self.get(
+            f"/projects/{project_id}/topics/{topic_id}/comments/{comment_id}/events",
+            {
+                "project_id": project_id,
+                "topic_id": topic_id,
+                "comment_id": comment_id,
+            },
+        )

src/bcf/bcf/v3/bcfxml.py

@@ -0,0 +1,827 @@
+import os
+import uuid
+import shutil
+import zipfile
+import logging
+import tempfile
+import bcf.v3.data
+from datetime import datetime
+from xml.dom import minidom
+from xmlschema import XMLSchema
+from contextlib import contextmanager
+from shutil import copyfile
+
+cwd = os.path.dirname(os.path.realpath(__file__))
+
+
+@contextmanager
+def cd(newdir):
+    prevdir = os.getcwd()
+    os.chdir(os.path.expanduser(newdir))
+    try:
+        yield
+    finally:
+        os.chdir(prevdir)
+
+
+class BcfXml:
+    def __init__(self):
+        self.filepath = None
+        self.logger = logging.getLogger("bcfxml")
+        self.author = "john@doe.com"
+        self.project = bcf.v3.data.Project()
+        self.version = "3.0"
+        self.topics = {}
+
+    def new_project(self):
+        self.project.project_id = str(uuid.uuid4())
+        self.project.name = "New Project"
+        self.topics = {}
+        if self.filepath:
+            self.close_project()
+        self.filepath = tempfile.mkdtemp()
+        self.edit_project()
+        self.edit_version()
+
+    def get_project(self, filepath=None):
+        if os.path.isfile(os.path.join(self.filepath, "project.bcfp")):
+            data = self._read_xml("project.bcfp", "project.xsd")
+            self.project.project_id = data["Project"]["@ProjectId"]
+            self.project.name = data["Project"].get("Name")
+        return self.project
+
+    def edit_project(self):
+        self.document = minidom.Document()
+        root = self._create_element(self.document, "ProjectInfo")
+        project = self._create_element(root, "Project", {"ProjectId": self.project.project_id})
+        if self.project.name:
+            self._create_element(project, "Name", text=self.project.name)
+        with open(os.path.join(self.filepath, "project.bcfp"), "wb") as f:
+            f.write(self.document.toprettyxml(encoding="utf-8"))
+
+    def save_project(self, filepath):
+        with cd(self.filepath):
+            zip_file = zipfile.ZipFile(filepath, "w", zipfile.ZIP_DEFLATED)
+            for root, dirs, files in os.walk("./"):
+                for file in files:
+                    zip_file.write(os.path.join(root, file))
+            zip_file.close()
+
+    def get_version(self):
+        data = self._read_xml("bcf.version", "version.xsd")
+        self.version = data["@VersionId"]
+        return self.version
+
+    def edit_version(self):
+        self.document = minidom.Document()
+        root = self._create_element(self.document, "Version", {"VersionId": self.version})
+        with open(os.path.join(self.filepath, "bcf.version"), "wb") as f:
+            f.write(self.document.toprettyxml(encoding="utf-8"))
+
+    def get_topics(self):
+        self.topics = {}
+        topics = []
+        subdirs = []
+        for (dirpath, dirnames, filenames) in os.walk(self.filepath):
+            subdirs = dirnames
+            break
+        for subdir in subdirs:
+            try:
+                uuid.UUID(subdir)
+            except ValueError:
+                continue
+            if not os.path.exists(os.path.join(self.filepath, subdir, "markup.bcf")):
+                continue
+            self.topics[subdir] = self.get_topic(subdir)
+        return self.topics
+
+    def get_header(self, guid):
+        data = self._read_xml(os.path.join(guid, "markup.bcf"), "markup.xsd")
+        if "Header" not in data:
+            return
+        header = bcf.v3.data.Header()
+        if data["Header"].get("Files"):
+            for item in data["Header"]["Files"].get("File", []):
+                header_file = bcf.v3.data.HeaderFile()
+                optional_keys = {
+                    "filename": "Filename",
+                    "date": "Date",
+                    "reference": "Reference",
+                    "ifc_project": "@IfcProject",
+                    "ifc_spatial_structure_element": "@IfcSpatialStructureElement",
+                    "is_external": "@IsExternal",
+                }
+                for key, value in optional_keys.items():
+                    if value in item:
+                        setattr(header_file, key, item[value])
+                header.files.append(header_file)
+            self.topics[guid].header = header
+            return header
+
+    def get_topic(self, guid):
+        if guid in self.topics:
+            return self.topics[guid]
+        data = self._read_xml(os.path.join(guid, "markup.bcf"), "markup.xsd")
+        topic = bcf.v3.data.Topic()
+        self.topics[guid] = topic
+
+        mandatory_keys = {
+            "guid": "@Guid",
+            "title": "Title",
+            "creation_date": "CreationDate",
+            "creation_author": "CreationAuthor",
+            "topic_status": "@TopicStatus",
+            "topic_type": "@TopicType",
+        }
+        for key, value in mandatory_keys.items():
+            setattr(topic, key, data["Topic"][value])
+
+        optional_keys = {
+            "priority": "Priority",
+            "index": "Index",
+            "modified_date": "ModifiedDate",
+            "modified_author": "ModifiedAuthor",
+            "due_date": "DueDate",
+            "assigned_to": "AssignedTo",
+            "stage": "Stage",
+            "description": "Description",
+            "server_assigned_id": "@ServerAssignedId",
+        }
+        for key, value in optional_keys.items():
+            if value in data["Topic"]:
+                setattr(topic, key, data["Topic"][value])
+
+        if data["Topic"].get("ReferenceLinks"):
+            topic.reference_links.extend(data["Topic"]["ReferenceLinks"].get("ReferenceLink", []))
+
+        if data["Topic"].get("Labels"):
+            topic.labels.extend(data["Topic"]["Labels"].get("Label", []))
+
+        if "BimSnippet" in data["Topic"]:
+            bim_snippet = bcf.v3.data.BimSnippet()
+            keys = {
+                "snippet_type": "@SnippetType",
+                "is_external": "@IsExternal",
+                "reference": "Reference",
+                "reference_schema": "ReferenceSchema",
+            }
+            for key, value in keys.items():
+                if value in data["Topic"]["BimSnippet"]:
+                    setattr(bim_snippet, key, data["Topic"]["BimSnippet"][value])
+            topic.bim_snippet = bim_snippet
+
+        if data["Topic"].get("DocumentReferences"):
+            for item in data["Topic"]["DocumentReferences"].get("DocumentReference", []):
+                document_reference = bcf.v3.data.DocumentReference()
+                keys = {
+                    "document_guid": "DocumentGuid",
+                    "url": "Url",
+                    "guid": "@Guid",
+                    "description": "Description",
+                }
+                for key, value in keys.items():
+                    if value in item:
+                        setattr(document_reference, key, item[value])
+                topic.document_references.append(document_reference)
+
+        if data["Topic"].get("RelatedTopics"):
+            for item in data["Topic"]["RelatedTopics"].get("RelatedTopic", []):
+                related_topic = bcf.v3.data.RelatedTopic()
+                related_topic.guid = item["@Guid"]
+                topic.related_topics.append(related_topic)
+        return topic
+
+    def add_topic(self, topic=None):
+        if topic is None:
+            topic = bcf.v3.data.Topic()
+        if not topic.guid:
+            topic.guid = str(uuid.uuid4())
+        if not topic.title:
+            topic.title = "New Topic"
+        os.mkdir(os.path.join(self.filepath, topic.guid))
+        self.edit_topic(topic)
+        return topic
+
+    def edit_topic(self, topic):
+        if not topic.creation_date:
+            topic.creation_date = datetime.utcnow().isoformat()
+            topic.creation_author = self.author
+        else:
+            topic.modified_date = datetime.utcnow().isoformat()
+            topic.modified_author = self.author
+
+        self.document = minidom.Document()
+        root = self._create_element(self.document, "Markup")
+        if topic.header:
+            self.write_header(topic.header, root)
+
+        topic_el = self._create_element(
+            root,
+            "Topic",
+            {
+                "Guid": topic.guid,
+                "ServerAssignedId": topic.server_assigned_id,
+                "TopicType": topic.topic_type,
+                "TopicStatus": topic.topic_status,
+            },
+        )
+        if topic.reference_links:
+            reference_Links_el = self._create_element(topic_el, "ReferenceLinks")
+            for reference_link in topic.reference_links:
+                self._create_element(reference_Links_el, "ReferenceLink", text=reference_link)
+
+        text_map = {
+            "Title": topic.title,
+            "Priority": topic.priority,
+            "Index": topic.index,
+        }
+        for key, value in text_map.items():
+            if value:
+                self._create_element(topic_el, key, text=value)
+        if topic.labels:
+            label_el = self._create_element(topic_el, "Labels")
+            for label in topic.labels:
+                self._create_element(label_el, "Label", text=label)
+
+        text_map = {
+            "CreationDate": topic.creation_date,
+            "CreationAuthor": topic.creation_author,
+            "ModifiedDate": topic.modified_date,
+            "ModifiedAuthor": topic.modified_author,
+            "DueDate": topic.due_date,
+            "AssignedTo": topic.assigned_to,
+            "Stage": topic.stage,
+            "Description": topic.description,
+        }
+        for key, value in text_map.items():
+            if value:
+                self._create_element(topic_el, key, text=value)
+
+        if topic.bim_snippet:
+            bim_snippet = self._create_element(
+                topic_el,
+                "BimSnippet",
+                {
+                    "SnippetType": topic.bim_snippet.snippet_type,
+                    "IsExternal": topic.bim_snippet.is_external,
+                },
+            )
+            self._create_element(bim_snippet, "Reference", text=topic.bim_snippet.reference)
+            self._create_element(
+                bim_snippet,
+                "ReferenceSchema",
+                text=topic.bim_snippet.reference_schema,
+            )
+        if topic.document_references:
+            reference_el = self._create_element(topic_el, "DocumentReferences")
+            self.write_document_references(topic.document_references, reference_el)
+        if topic.related_topics:
+            related_topic_el = self._create_element(topic_el, "RelatedTopics")
+            for related_topic in topic.related_topics:
+                self._create_element(related_topic_el, "RelatedTopic", {"Guid": related_topic.guid})
+        if topic.comments:
+            comment_el = self._create_element(topic_el, "Comments")
+            self.write_comments(topic.comments, comment_el)
+        if topic.viewpoints:
+            viewpoint_el = self._create_element(topic_el, "Viewpoints")
+            self.write_viewpoints(topic.viewpoints, viewpoint_el, topic)
+        with open(os.path.join(self.filepath, topic.guid, "markup.bcf"), "wb") as f:
+            f.write(self.document.toprettyxml(encoding="utf-8"))
+
+    def write_document_references(self, references, root):
+        for reference in references:
+            document_reference_el = self._create_element(root, "DocumentReference", {"Guid": reference.guid})
+            if reference.document_guid:
+                self._create_element(document_reference_el, "DocumentGuid", text=reference.document_guid)
+            elif reference.url:
+                self._create_element(document_reference_el, "Url", text=reference.url)
+            if reference.description:
+                self._create_element(document_reference_el, "Description", text=reference.description)
+
+    def write_header(self, header, root):
+        if not header or not header.files:
+            return
+        header_el = self._create_element(root, "Header")
+        files_el = self._create_element(header_el, "Files")
+        for f in header.files:
+            file_el = self._create_element(
+                files_el,
+                "File",
+                {
+                    "IfcProject": f.ifc_project,
+                    "IfcSpatialStructureElement": f.ifc_spatial_structure_element,
+                    "IsExternal": f.is_external,
+                },
+            )
+            if f.filename:
+                self._create_element(file_el, "Filename", text=f.filename)
+            if f.date:
+                self._create_element(file_el, "Date", text=f.date)
+            if f.reference:
+                self._create_element(file_el, "Reference", text=f.reference)
+
+    def write_comments(self, comments, root):
+        for comment in comments.values():
+            comment_el = self._create_element(root, "Comment", {"Guid": comment.guid})
+            text_map = {
+                "Date": comment.date,
+                "Author": comment.author,
+                "Comment": comment.comment,
+                "ModifiedDate": comment.modified_date,
+                "ModifiedAuthor": comment.modified_author,
+            }
+            for key, value in text_map.items():
+                if value:
+                    self._create_element(comment_el, key, text=value)
+            if comment.viewpoint:
+                self._create_element(comment_el, "Viewpoint", {"Guid": comment.viewpoint.guid})
+
+    def add_comment(self, topic, comment=None):
+        if comment is None:
+            comment = bcf.v3.data.Comment()
+        if not comment.guid:
+            comment.guid = str(uuid.uuid4())
+        if not comment.comment:
+            comment.comment = "'Free software' is a matter of liberty, not price. To understand the concept, you should think of 'free' as in 'free speech,' not as in 'free beer'."
+        topic.comments[comment.guid] = comment
+        self.edit_comment(comment, topic)
+
+    def edit_comment(self, comment, topic):
+        if not comment.date:
+            comment.date = datetime.utcnow().isoformat()
+            comment.author = self.author
+        else:
+            comment.modified_date = datetime.utcnow().isoformat()
+            comment.modified_author = self.author
+        self.edit_topic(topic)
+
+    def delete_comment(self, guid, topic):
+        if guid in topic.comments:
+            del topic.comments[guid]
+        self.edit_topic(topic)
+
+    def delete_topic(self, guid):
+        if guid in self.topics:
+            del self.topics[guid]
+        shutil.rmtree(os.path.join(self.filepath, guid))
+
+    def write_viewpoints(self, viewpoints, root, topic):
+        for viewpoint in viewpoints.values():
+            viewpoint_el = self._create_element(root, "ViewPoint", {"Guid": viewpoint.guid})
+            text_map = {
+                "Viewpoint": viewpoint.viewpoint,
+                "Snapshot": viewpoint.snapshot,
+                "Index": viewpoint.index,
+            }
+            for key, value in text_map.items():
+                if value:
+                    self._create_element(viewpoint_el, key, text=value)
+            self.write_viewpoint(viewpoint, topic)
+
+    def write_viewpoint(self, viewpoint, topic):
+        document = minidom.Document()
+        root = self._create_element(document, "VisualizationInfo", {"Guid": viewpoint.guid})
+        self.write_viewpoint_components(viewpoint, root)
+        self.write_viewpoint_orthogonal_camera(viewpoint, root)
+        self.write_viewpoint_perspective_camera(viewpoint, root)
+        self.write_viewpoint_lines(viewpoint, root)
+        self.write_viewpoint_clipping_planes(viewpoint, root)
+        self.write_viewpoint_bitmaps(viewpoint, root)
+        with open(os.path.join(self.filepath, topic.guid, viewpoint.viewpoint), "wb") as f:
+            f.write(document.toprettyxml(encoding="utf-8"))
+
+    def write_viewpoint_components(self, viewpoint, parent):
+        if not viewpoint.components:
+            return
+        components_el = self._create_element(parent, "Components")
+        if viewpoint.components.selection:
+            selection_el = self._create_element(components_el, "Selection")
+            for selection in viewpoint.components.selection:
+                self.write_component(selection, selection_el)
+        if viewpoint.components.visibility:
+            visibility = self._create_element(
+                components_el,
+                "Visibility",
+                {"DefaultVisibility": viewpoint.components.visibility.default_visibility},
+            )
+            if viewpoint.components.visibility.view_setup_hints:
+                view_setup_hints = self._create_element(
+                    visibility,
+                    "ViewSetupHints",
+                    {
+                        "SpacesVisible": viewpoint.components.visibility.view_setup_hints.spaces_visible,
+                        "SpaceBoundariesVisible": viewpoint.components.visibility.view_setup_hints.space_boundaries_visible,
+                        "OpeningsVisible": viewpoint.components.visibility.view_setup_hints.openings_visible,
+                    },
+                )
+            if viewpoint.components.visibility.exceptions:
+                exceptions_el = self._create_element(visibility, "Exceptions")
+                for exception in viewpoint.components.visibility.exceptions:
+                    self.write_component(exception, exceptions_el)
+        if viewpoint.components.coloring:
+            coloring_el = self._create_element(components_el, "Coloring")
+            for color in viewpoint.components.coloring:
+                color_el = self._create_element(coloring_el, "Color", {"Color": color.color})
+                component_el = self._create_element(color_el, "Components")
+                for component in color.components:
+                    self.write_component(component, component_el)
+
+    def write_viewpoint_orthogonal_camera(self, viewpoint, parent):
+        if not viewpoint.orthogonal_camera:
+            return
+        camera = viewpoint.orthogonal_camera
+        camera_el = self._create_element(parent, "OrthogonalCamera")
+        camera_view_point = self._create_element(camera_el, "CameraViewPoint")
+        self.write_vector(camera_view_point, camera.camera_view_point)
+        camera_direction = self._create_element(camera_el, "CameraDirection")
+        self.write_vector(camera_direction, camera.camera_direction)
+        camera_up_vector = self._create_element(camera_el, "CameraUpVector")
+        self.write_vector(camera_up_vector, camera.camera_up_vector)
+        self._create_element(camera_el, "ViewToWorldScale", text=camera.view_to_world_scale)
+        self._create_element(camera_el, "AspectRatio", text=camera.aspect_ratio)
+
+    def write_viewpoint_perspective_camera(self, viewpoint, parent):
+        if not viewpoint.perspective_camera:
+            return
+        camera = viewpoint.perspective_camera
+        camera_el = self._create_element(parent, "PerspectiveCamera")
+        camera_view_point = self._create_element(camera_el, "CameraViewPoint")
+        self.write_vector(camera_view_point, camera.camera_view_point)
+        camera_direction = self._create_element(camera_el, "CameraDirection")
+        self.write_vector(camera_direction, camera.camera_direction)
+        camera_up_vector = self._create_element(camera_el, "CameraUpVector")
+        self.write_vector(camera_up_vector, camera.camera_up_vector)
+        self._create_element(camera_el, "FieldOfView", text=camera.field_of_view)
+        self._create_element(camera_el, "AspectRatio", text=camera.aspect_ratio)
+
+    def write_viewpoint_lines(self, viewpoint, parent):
+        if not viewpoint.lines:
+            return
+        lines_el = self._create_element(parent, "Lines")
+        for line in viewpoint.lines:
+            line_el = self._create_element(lines_el, "Line")
+            start_point_el = self._create_element(line_el, "StartPoint")
+            self.write_vector(start_point_el, line.start_point)
+            end_point_el = self._create_element(line_el, "EndPoint")
+            self.write_vector(end_point_el, line.end_point)
+
+    def write_viewpoint_clipping_planes(self, viewpoint, parent):
+        if not viewpoint.clipping_planes:
+            return
+        planes_el = self._create_element(parent, "ClippingPlanes")
+        for plane in viewpoint.clipping_planes:
+            plane_el = self._create_element(planes_el, "ClippingPlane")
+            location_el = self._create_element(plane_el, "Location")
+            self.write_vector(location_el, plane.location)
+            direction_el = self._create_element(plane_el, "Direction")
+            self.write_vector(direction_el, plane.direction)
+
+    def write_viewpoint_bitmaps(self, viewpoint, parent):
+        if not viewpoint.bitmaps:
+            return
+        bitmaps_el = self._create_element(parent, "Bitmaps")
+        for bitmap in viewpoint.bitmaps:
+            bitmap_el = self._create_element(bitmaps_el, "Bitmap")
+
+            text_map = {"Format": bitmap.bitmap_format, "Reference": bitmap.reference}
+            for key, value in text_map.items():
+                self._create_element(bitmap_el, key, text=value)
+
+            location_el = self._create_element(bitmap_el, "Location")
+            self.write_vector(location_el, bitmap.location)
+            normal_el = self._create_element(bitmap_el, "Normal")
+            self.write_vector(normal_el, bitmap.normal)
+            up_el = self._create_element(bitmap_el, "Up")
+            self.write_vector(up_el, bitmap.up)
+
+            self._create_element(bitmap_el, "Height", text=bitmap.height)
+
+    def write_vector(self, parent, from_obj):
+        self._create_element(parent, "X", text=from_obj.x)
+        self._create_element(parent, "Y", text=from_obj.y)
+        self._create_element(parent, "Z", text=from_obj.z)
+
+    def write_component(self, data, parent):
+        component_el = self._create_element(parent, "Component", {"IfcGuid": data.ifc_guid})
+        text_map = {
+            "OriginatingSystem": data.originating_system,
+            "AuthoringToolId": data.authoring_tool_id,
+        }
+        for key, value in text_map.items():
+            if value:
+                self._create_element(component_el, key, text=value)
+
+    def add_viewpoint(self, topic, viewpoint=None):
+        if not viewpoint:
+            viewpoint = bcf.v3.data.Viewpoint()
+        if not viewpoint.guid:
+            viewpoint.guid = str(uuid.uuid4())
+        if not viewpoint.viewpoint:
+            viewpoint.viewpoint = f"{viewpoint.guid}.bcfv"
+        if viewpoint.snapshot:
+            topic_filepath = os.path.join(self.filepath, topic.guid)
+            filepath = os.path.join(topic_filepath, viewpoint.snapshot)
+            if not os.path.exists(filepath):
+                filename = viewpoint.guid + os.path.splitext(viewpoint.snapshot)[-1]
+                copyfile(viewpoint.snapshot, os.path.join(topic_filepath, filename))
+                viewpoint.snapshot = filename
+        topic.viewpoints[viewpoint.guid] = viewpoint
+        self.edit_topic(topic)
+
+    def delete_viewpoint(self, guid, topic):
+        if guid not in topic.viewpoints:
+            return
+        viewpoint = topic.viewpoints[guid]
+        if viewpoint.snapshot:
+            filepath = os.path.join(self.filepath, topic.guid, viewpoint.snapshot)
+            if os.path.exists(filepath):
+                os.remove(filepath)
+        if viewpoint.viewpoint:
+            filepath = os.path.join(self.filepath, topic.guid, viewpoint.viewpoint)
+            if os.path.exists(filepath):
+                os.remove(filepath)
+        for bitmap in viewpoint.bitmaps:
+            if not bitmap.reference:
+                continue
+            filepath = os.path.join(self.filepath, topic.guid, bitmap.reference)
+            if os.path.exists(filepath):
+                os.remove(filepath)
+        del topic.viewpoints[guid]
+        self.edit_topic(topic)
+
+    def delete_file(self, topic, index):
+        if not topic.header:
+            return
+        f = topic.header.files.pop(index)
+        filepath = os.path.join(self.filepath, topic.guid, f.reference)
+        if not f.is_external and os.path.exists(filepath):
+            os.remove(filepath)
+        self.edit_topic(topic)
+
+    def delete_bim_snippet(self, topic):
+        if not topic.bim_snippet:
+            return
+        if topic.bim_snippet.reference and not topic.bim_snippet.is_external:
+            filepath = os.path.join(self.filepath, topic.guid, topic.bim_snippet.reference)
+            if os.path.exists(filepath):
+                os.remove(filepath)
+        topic.bim_snippet = None
+        self.edit_topic(topic)
+
+    def delete_document_reference(self, topic, index):
+        document_reference = topic.document_references[index]
+        if document_reference.referenced_document and not document_reference.is_external:
+            filepath = os.path.join(self.filepath, topic.guid, document_reference.referenced_document)
+            if os.path.exists(filepath):
+                os.remove(filepath)
+        del topic.document_references[index]
+        self.edit_topic(topic)
+
+    def add_document_reference(self, topic, document_reference):
+        if os.path.exists(document_reference.referenced_document):
+            topic_filepath = os.path.join(self.filepath, topic.guid)
+            filename = os.path.basename(document_reference.referenced_document)
+            copyfile(
+                document_reference.referenced_document,
+                os.path.join(topic_filepath, filename),
+            )
+            document_reference.referenced_document = filename
+            document_reference.is_external = False
+        else:
+            document_reference.is_external = True
+        if not document_reference.guid:
+            document_reference.guid = str(uuid.uuid4())
+        topic.document_references.append(document_reference)
+        self.edit_topic(topic)
+
+    def add_bim_snippet(self, topic, bim_snippet):
+        if topic.bim_snippet:
+            self.delete_bim_snippet(topic)
+        if os.path.exists(bim_snippet.reference):
+            topic_filepath = os.path.join(self.filepath, topic.guid)
+            filename = os.path.basename(bim_snippet.reference)
+            copyfile(bim_snippet.reference, os.path.join(topic_filepath, filename))
+            bim_snippet.reference = filename
+            bim_snippet.is_external = False
+        else:
+            bim_snippet.is_external = True
+        topic.bim_snippet = bim_snippet
+        self.edit_topic(topic)
+
+    def add_file(self, topic, header_file):
+        if os.path.exists(header_file.reference):
+            topic_filepath = os.path.join(self.filepath, topic.guid)
+            header_file.filename = os.path.basename(header_file.reference)
+            copyfile(
+                header_file.reference,
+                os.path.join(topic_filepath, header_file.filename),
+            )
+            header_file.reference = header_file.filename
+            header_file.is_external = False
+        header_file.date = datetime.utcnow().isoformat()
+        if not topic.header:
+            topic.header = bcf.v3.data.Header()
+        topic.header.files.append(header_file)
+        self.edit_topic(topic)
+
+    def get_comments(self, guid):
+        comments = {}
+        if "Comments" not in data["Topics"]:
+            return comments
+        data = self._read_xml(os.path.join(guid, "markup.bcf"), "markup.xsd")
+        for item in data["Topic"]["Comments"].get("Comment", []):
+            comment = bcf.v3.data.Comment()
+            mandatory_keys = {
+                "guid": "@Guid",
+                "date": "Date",
+                "author": "Author",
+            }
+            for key, value in mandatory_keys.items():
+                setattr(comment, key, item[value])
+            optional_keys = {
+                "comment": "Comment",
+                "modified_date": "ModifiedDate",
+                "modified_author": "ModifiedAuthor",
+            }
+            for key, value in optional_keys.items():
+                if value in item:
+                    setattr(comment, key, item[value])
+            if "Viewpoint" in item:
+                viewpoint = bcf.v3.data.Viewpoint()
+                viewpoint.guid = item["Viewpoint"]["@Guid"]
+                comment.viewpoint = viewpoint
+            comments[comment.guid] = comment
+        self.topics[guid].comments = comments
+        return comments
+
+    def get_viewpoints(self, guid):
+        viewpoints = {}
+        if "Viewpoints" not in data["Topic"]:
+            return viewpoints
+        data = self._read_xml(os.path.join(guid, "markup.bcf"), "markup.xsd")
+        for item in data["Topic"]["Viewpoints"]:
+            viewpoint = self.get_viewpoint(item, guid)
+            viewpoints[viewpoint.guid] = viewpoint
+        self.topics[guid].viewpoints = viewpoints
+        return viewpoints
+
+    def get_viewpoint(self, data, topic_guid):
+        viewpoint = bcf.v3.data.Viewpoint()
+        viewpoint.guid = data["@Guid"]
+        optional_keys = {
+            "viewpoint": "Viewpoint",
+            "snapshot": "Snapshot",
+            "index": "Index",
+        }
+        for key, value in optional_keys.items():
+            if value in data:
+                setattr(viewpoint, key, data[value])
+        visinfo = self._read_xml(os.path.join(topic_guid, viewpoint.viewpoint), "visinfo.xsd")
+        viewpoint.components = self.get_viewpoint_components(visinfo)
+        viewpoint.orthogonal_camera = self.get_viewpoint_orthogonal_camera(visinfo)
+        viewpoint.perspective_camera = self.get_viewpoint_perspective_camera(visinfo)
+        viewpoint.lines = self.get_viewpoint_lines(visinfo)
+        viewpoint.clipping_planes = self.get_viewpoint_clipping_planes(visinfo)
+        viewpoint.bitmaps = self.get_viewpoint_bitmaps(visinfo)
+        return viewpoint
+
+    def get_viewpoint_components(self, visinfo):
+        if "Components" not in visinfo:
+            return None
+        components = bcf.v3.data.Components()
+        data = visinfo["Components"]
+        if "Selection" in data and "Component" in data["Selection"]:
+            for item in data["Selection"].get("Component", []):
+                components.selection.append(self.get_component(item))
+        if "Visibility" in data:
+            component_visibility = bcf.v3.data.ComponentVisibility()
+            if "@DefaultVisibility" in data["Visibility"]:
+                component_visibility.default_visibility = data["Visibility"]["@DefaultVisibility"]
+            if "Exceptions" in data["Visibility"] and "Component" in data["Visibility"]["Exceptions"]:
+                for item in data["Visibility"]["Exceptions"]["Component"]:
+                    component_visibility.exceptions.append(self.get_component(item))
+            if "ViewSetupHints" in data["Visibility"]:
+                view_setup_hints = bcf.v3.data.ViewSetupHints()
+                optional_keys = {
+                    "spaces_visible": "@SpacesVisible",
+                    "space_boundaries_visible": "@SpaceBoundariesVisible",
+                    "openings_visible": "@OpeningsVisible",
+                }
+                for key, value in optional_keys.items():
+                    if value in data["Visibility"]["ViewSetupHints"]:
+                        setattr(view_setup_hints, key, data["Visibility"]["ViewSetupHints"][value])
+                component_visibility.view_setup_hints = view_setup_hints
+            components.visibility = component_visibility
+        if "Coloring" in data and "Color" in data["Coloring"]:
+            for item in data["Coloring"]["Color"]:
+                color = bcf.v3.data.Color()
+                color.color = item["@Color"]
+                for item2 in item["Components"]["Component"]:
+                    color.components.append(self.get_component(item2))
+                components.coloring.append(color)
+        return components
+
+    def get_viewpoint_orthogonal_camera(self, visinfo):
+        if "OrthogonalCamera" not in visinfo:
+            return None
+        camera = bcf.v3.data.OrthogonalCamera()
+        data = visinfo["OrthogonalCamera"]
+        self.set_vector(camera.camera_view_point, data["CameraViewPoint"])
+        self.set_vector(camera.camera_direction, data["CameraDirection"])
+        self.set_vector(camera.camera_up_vector, data["CameraUpVector"])
+        camera.view_to_world_scale = data["ViewToWorldScale"]
+        camera.aspect_ratio = data["AspectRatio"]
+        return camera
+
+    def get_viewpoint_perspective_camera(self, visinfo):
+        if "PerspectiveCamera" not in visinfo:
+            return None
+        camera = bcf.v3.data.PerspectiveCamera()
+        data = visinfo["PerspectiveCamera"]
+        self.set_vector(camera.camera_view_point, data["CameraViewPoint"])
+        self.set_vector(camera.camera_direction, data["CameraDirection"])
+        self.set_vector(camera.camera_up_vector, data["CameraUpVector"])
+        camera.field_of_view = data["FieldOfView"]
+        camera.aspect_ratio = data["AspectRatio"]
+        return camera
+
+    def get_viewpoint_lines(self, visinfo):
+        if "Lines" not in visinfo:
+            return []
+        lines = []
+        for item in visinfo["Lines"].get("Line", []):
+            line = bcf.v3.data.Line()
+            self.set_vector(line.start_point, item["StartPoint"])
+            self.set_vector(line.end_point, item["EndPoint"])
+            lines.append(line)
+        return lines
+
+    def get_viewpoint_clipping_planes(self, visinfo):
+        if "ClippingPlanes" not in visinfo:
+            return []
+        planes = []
+        for item in visinfo["ClippingPlanes"]["ClippingPlane"]:
+            plane = bcf.v3.data.ClippingPlane()
+            self.set_vector(plane.location, item["Location"])
+            self.set_vector(plane.direction, item["Direction"])
+            planes.append(plane)
+        return planes
+
+    def get_viewpoint_bitmaps(self, visinfo):
+        if "Bitmaps" not in visinfo:
+            return []
+        bitmaps = []
+        for item in visinfo["Bitmaps"].get("Bitmap"):
+            bitmap = bcf.v3.data.Bitmap()
+            bitmap.reference = item["Reference"]
+            bitmap.bitmap_format = item["Format"].upper()
+            self.set_vector(bitmap.location, item["Location"])
+            self.set_vector(bitmap.normal, item["Normal"])
+            self.set_vector(bitmap.up, item["Up"])
+            bitmap.height = item["Height"]
+            bitmaps.append(bitmap)
+        return bitmaps
+
+    def set_vector(self, to_obj, from_xml):
+        to_obj.x = from_xml["X"]
+        to_obj.y = from_xml["Y"]
+        to_obj.z = from_xml["Z"]
+
+    def get_component(self, data):
+        component = bcf.v3.data.Component()
+        optional_keys = {
+            "originating_system": "OriginatingSystem",
+            "authoring_tool_id": "AuthoringToolId",
+            "ifc_guid": "@IfcGuid",
+        }
+        for key, value in optional_keys.items():
+            if value in data:
+                setattr(component, key, data[value])
+        return component
+
+    def close_project(self):
+        shutil.rmtree(self.filepath)
+
+    def _read_xml(self, filename, xsd):
+        schema = XMLSchema(os.path.join(cwd, "xsd", xsd))
+        filepath = os.path.join(self.filepath, filename)
+        (data, errors) = schema.to_dict(filepath, validation="lax")
+        for error in errors:
+            self.logger.error(error)
+        return data
+
+    def _create_element(self, parent, name, attributes={}, text=None):
+        element = self.document.createElement(name)
+        for key, value in attributes.items():
+            if isinstance(value, bool):
+                element.setAttribute(key, str(value).lower())
+            elif value:
+                element.setAttribute(key, value)
+        if text is not None:
+            text = self.document.createTextNode(str(text))
+            element.appendChild(text)
+        parent.appendChild(element)
+        return element
+
+    def __del__(self):
+        self.close_project()

src/bcf/bcf/v3/data.py

@@ -0,0 +1,181 @@
+class Project:
+    def __init__(self):
+        self.project_id = ""
+        self.name = ""
+
+
+class BimSnippet:
+    def __init__(self):
+        self.snippet_type = None
+        self.is_external = False
+        self.reference = None
+        self.reference_schema = None
+
+
+class DocumentReference:
+    def __init__(self):
+        self.description = None
+        self.document_guid = None
+        self.url = None
+        self.guid = None
+
+
+class RelatedTopic:
+    def __init__(self):
+        self.guid = None
+
+
+class HeaderFile:
+    def __init__(self):
+        self.file_name = ""
+        self.date = None
+        self.reference = ""
+        self.ifc_project = None
+        self.ifc_spatial_structure_element = None
+        self.is_external = True
+
+
+class Header:
+    def __init__(self):
+        self.files = []
+
+
+class Topic:
+    def __init__(self):
+        self.reference_links = []
+        self.title = ""
+        self.priority = None
+        self.index = None  # Deprecated, stored, but ignored
+        self.labels = []
+        self.creation_date = None
+        self.creation_author = None
+        self.modified_date = None
+        self.modified_author = None
+        self.due_date = None
+        self.assigned_to = None
+        self.stage = None
+        self.description = None
+        self.bim_snippet = None
+        self.document_references = []
+        self.related_topics = []
+        self.topic_status = None
+        self.topic_type = None
+        self.guid = None
+
+        self.header = None
+        self.comments = {}
+        self.viewpoints = {}
+        self.server_assigned_id = ""
+
+
+class Comment:
+    def __init__(self):
+        self.guid = None
+        self.date = None
+        self.author = ""
+        self.comment = ""
+        self.viewpoint = None
+        self.modified_date = None
+        self.modified_author = ""
+
+
+class ViewSetupHints:
+    def __init__(self):
+        self.spaces_visible = False
+        self.space_boundaries_visible = False
+        self.openings_visible = False
+
+
+class Component:
+    def __init__(self):
+        self.originating_system = None
+        self.authoring_tool_id = None
+        self.ifc_guid = None
+
+
+class ComponentVisibility:
+    def __init__(self):
+        self.exceptions = []
+        self.default_visibility = False
+        self.view_setup_hints = None
+
+
+class Color:
+    def __init__(self):
+        self.color = None
+        self.components = []
+
+
+class Components:
+    def __init__(self):
+
+        self.selection = []
+        self.visibility = None
+        self.coloring = []
+
+
+class Point:
+    def __init__(self):
+        self.x = 0
+        self.y = 0
+        self.z = 0
+
+
+class Direction(Point):
+    pass
+
+
+class OrthogonalCamera:
+    def __init__(self):
+        self.camera_view_point = Point()
+        self.camera_direction = Direction()
+        self.camera_up_vector = Direction()
+        self.view_to_world_scale = 1.0
+        self.aspect_ratio = 1.0
+
+
+class PerspectiveCamera:
+    def __init__(self):
+        self.camera_view_point = Point()
+        self.camera_direction = Direction()
+        self.camera_up_vector = Direction()
+        self.field_of_view = 60.0
+        self.aspect_ratio = 1.0
+
+
+class Line:
+    def __init__(self):
+        self.start_point = Point()
+        self.end_point = Point()
+
+
+class ClippingPlane:
+    def __init__(self):
+        self.location = Point()
+        self.direction = Direction()
+
+
+class Bitmap:
+    def __init__(self):
+        self.reference = ""  # Only in BCF-XML
+        self.bitmap_data = None  # Only in BCF-API
+        self.bitmap_format = "PNG"  # Enum of png or jpg
+        self.location = Point()
+        self.normal = Direction()
+        self.up = Direction()
+        self.height = 1.0
+
+
+class Viewpoint:
+    def __init__(self):
+        self.guid = None
+        self.viewpoint = None
+        self.snapshot = None
+        self.index = None
+
+        self.components = None  # It's not a list, despite the plural name
+        self.orthogonal_camera = None
+        self.perspective_camera = None
+        self.lines = []
+        self.clipping_planes = []
+        self.bitmaps = []

src/bcf/bcf/v3/xsd/documents.xsd

@@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
+    <xs:include schemaLocation="shared-types.xsd"/>
+
+    <xs:element name="DocumentInfo">
+        <xs:complexType>
+            <xs:sequence>
+                <xs:element name="Documents" minOccurs="0">
+                    <xs:complexType>
+                        <xs:sequence>
+                            <xs:element name="Document" type="Document" minOccurs="0" maxOccurs="unbounded"/>
+                        </xs:sequence>
+                    </xs:complexType>
+                </xs:element>
+            </xs:sequence>
+        </xs:complexType>
+    </xs:element>
+    <xs:complexType name="Document">
+        <xs:sequence>
+            <!-- Filename of the document with the file extension. Not used to store the file in the BCF -->
+            <xs:element name="Filename" type="NonEmptyOrBlankString"/>
+            <!-- Human readable description of the document -->
+            <xs:element name="Description" type="NonEmptyOrBlankString" minOccurs="0"/>
+        </xs:sequence>
+        <xs:attributeGroup ref="DocumentAttributes"/>
+    </xs:complexType>
+    <xs:attributeGroup name="DocumentAttributes">
+        <!-- Guid of the document. Must match the filename in the BCF -->
+        <xs:attribute name="Guid" type="Guid" use="required"/>
+    </xs:attributeGroup>
+</xs:schema>

src/bcf/bcf/v3/xsd/extensions.xsd

@@ -0,0 +1,60 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
+    <xs:include schemaLocation="shared-types.xsd"/>
+
+    <xs:element name="Extensions">
+        <xs:complexType>
+            <xs:sequence>
+                <xs:element name="TopicTypes" minOccurs="0">
+                    <xs:complexType>
+                        <xs:sequence>
+                            <xs:element name="TopicType" type="NonEmptyOrBlankString" minOccurs="0" maxOccurs="unbounded"/>
+                        </xs:sequence>
+                    </xs:complexType>
+                </xs:element>
+                <xs:element name="TopicStatuses" minOccurs="0">
+                    <xs:complexType>
+                        <xs:sequence>
+                            <xs:element name="TopicStatus" type="NonEmptyOrBlankString" minOccurs="0" maxOccurs="unbounded"/>
+                        </xs:sequence>
+                    </xs:complexType>
+                </xs:element>
+                <xs:element name="Priorities" minOccurs="0">
+                    <xs:complexType>
+                        <xs:sequence>
+                            <xs:element name="Priority" type="NonEmptyOrBlankString" minOccurs="0" maxOccurs="unbounded"/>
+                        </xs:sequence>
+                    </xs:complexType>
+                </xs:element>
+                <xs:element name="TopicLabels" minOccurs="0">
+                    <xs:complexType>
+                        <xs:sequence>
+                            <xs:element name="TopicLabel" type="NonEmptyOrBlankString" minOccurs="0" maxOccurs="unbounded"/>
+                        </xs:sequence>
+                    </xs:complexType>
+                </xs:element>
+                <xs:element name="Users" minOccurs="0">
+                    <xs:complexType>
+                        <xs:sequence>
+                            <xs:element name="User" type="NonEmptyOrBlankString" minOccurs="0" maxOccurs="unbounded"/>
+                        </xs:sequence>
+                    </xs:complexType>
+                </xs:element>
+                <xs:element name="SnippetTypes" minOccurs="0">
+                    <xs:complexType>
+                        <xs:sequence>
+                            <xs:element name="SnippetType" type="NonEmptyOrBlankString" minOccurs="0" maxOccurs="unbounded"/>
+                        </xs:sequence>
+                    </xs:complexType>
+                </xs:element>
+                <xs:element name="Stages" minOccurs="0">
+                    <xs:complexType>
+                        <xs:sequence>
+                            <xs:element name="Stage" type="NonEmptyOrBlankString" minOccurs="0" maxOccurs="unbounded"/>
+                        </xs:sequence>
+                    </xs:complexType>
+                </xs:element>
+            </xs:sequence>
+        </xs:complexType>
+    </xs:element>
+</xs:schema>

src/bcf/bcf/v3/xsd/markup.xsd

@@ -0,0 +1,174 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
+    <xs:include schemaLocation="shared-types.xsd"/>
+    <xs:element name="Markup">
+        <xs:complexType>
+            <xs:sequence>
+                <xs:element name="Header" type="Header" minOccurs="0"/>
+                <xs:element name="Topic" type="Topic"/>
+            </xs:sequence>
+        </xs:complexType>
+    </xs:element>
+    <xs:complexType name="Header">
+        <xs:sequence>
+            <xs:element name="Files" minOccurs="0">
+                <xs:complexType>
+                    <xs:sequence>
+                        <xs:element name="File" type="File" minOccurs="0" maxOccurs="unbounded"/>
+                    </xs:sequence>
+                </xs:complexType>
+            </xs:element>
+        </xs:sequence>
+    </xs:complexType>
+    <!-- ISG Jira issue BCF-9. Add support for several viewpoints and snapshots per issue -->
+    <xs:complexType name="ViewPoint">
+        <xs:sequence>
+            <!-- viewpoint file (xml) -->
+            <xs:element name="Viewpoint" type="NonEmptyOrBlankString" minOccurs="0"/>
+            <!-- the snapshot png -->
+            <xs:element name="Snapshot" type="NonEmptyOrBlankString" minOccurs="0"/>
+            <!-- the viewpoint index (sort order) -->
+            <xs:element name="Index" type="xs:int" minOccurs="0"/>
+        </xs:sequence>
+        <xs:attribute name="Guid" type="Guid" use="required"/>
+        <!-- Guid of the viewpoint -->
+    </xs:complexType>
+    <!-- BimSnippet -->
+    <xs:complexType name="BimSnippet">
+        <xs:sequence>
+            <!--
+        Name of the file in the topic folder containing the snippet or a URL.
+         E.G.- Expresscode containing p.e Issue, Request
+        // Maybe some header infos ?? // IfcEntites // Geometry 
+         -->
+            <!-- Reference (name) to the snippet file -->
+            <xs:element name="Reference" type="NonEmptyOrBlankString"/>
+            <xs:element name="ReferenceSchema" type="NonEmptyOrBlankString"/>
+        </xs:sequence>
+        <xs:attribute name="SnippetType" type="NonEmptyOrBlankString" use="required"/>
+        <xs:attribute name="IsExternal" type="xs:boolean" default="false"/>
+        <!-- This flag is true when the reference is a URL pointing outside of the BCF file-->
+    </xs:complexType>
+    <xs:complexType name="Topic">
+        <xs:sequence>
+            <xs:element name="ReferenceLinks" minOccurs="0">
+                <xs:complexType>
+                    <xs:sequence>
+                        <xs:element name="ReferenceLink" type="NonEmptyOrBlankString" minOccurs="0" maxOccurs="unbounded"/>
+                    </xs:sequence>
+                </xs:complexType>
+            </xs:element>
+            <xs:element name="Title" type="NonEmptyOrBlankString"/>
+            <xs:element name="Priority" type="NonEmptyOrBlankString" minOccurs="0"/>
+            <!-- ISG Jira issue BCF-8 Add a way save order the topics -->
+            <!-- This property is deprecated and will be removed in a future release -->
+            <xs:element name="Index" type="xs:int" minOccurs="0"/>
+            <xs:element name="Labels" minOccurs="0">
+                <xs:complexType>
+                    <xs:sequence>
+                        <xs:element name="Label" type="NonEmptyOrBlankString" minOccurs="0" maxOccurs="unbounded"/>
+                    </xs:sequence>
+                </xs:complexType>
+            </xs:element>
+            <xs:element name="CreationDate" type="xs:dateTime"/>
+            <xs:element name="CreationAuthor" type="NonEmptyOrBlankString"/>
+            <xs:element name="ModifiedDate" type="xs:dateTime" minOccurs="0"/>
+            <xs:element name="ModifiedAuthor" type="NonEmptyOrBlankString" minOccurs="0"/>
+            <xs:element name="DueDate" type="xs:dateTime" minOccurs="0"/>
+            <xs:element name="AssignedTo" type="NonEmptyOrBlankString" minOccurs="0"/>
+            <xs:element name="Stage" type="NonEmptyOrBlankString" minOccurs="0"/>
+            <xs:element name="Description" type="NonEmptyOrBlankString" minOccurs="0"/>
+            <xs:element name="BimSnippet" type="BimSnippet" minOccurs="0"/>
+            <xs:element name="DocumentReferences" minOccurs="0">
+                <xs:complexType>
+                    <xs:sequence>
+                        <xs:element name="DocumentReference" type="DocumentReference" minOccurs="0" maxOccurs="unbounded"/>
+                    </xs:sequence>
+                </xs:complexType>
+            </xs:element>
+            <xs:element name="RelatedTopics" minOccurs="0">
+                <xs:complexType>
+                    <xs:sequence>
+                        <xs:element name="RelatedTopic" minOccurs="0" maxOccurs="unbounded">
+                            <xs:complexType>
+                                <xs:attribute name="Guid" type="Guid" use="required"/>
+                            </xs:complexType>
+                        </xs:element>
+                    </xs:sequence>
+                </xs:complexType>
+            </xs:element>
+            <xs:element name="Comments" minOccurs="0">
+                <xs:complexType>
+                    <xs:sequence>
+                        <xs:element name="Comment" type="Comment" minOccurs="0" maxOccurs="unbounded"/>
+                    </xs:sequence>
+                </xs:complexType>
+            </xs:element>
+            <!-- ISG Jira issue BCF-9. Add support for several viewpoints and snapshots per issue -->
+            <xs:element name="Viewpoints" minOccurs="0">
+                <xs:complexType>
+                    <xs:sequence>
+                        <xs:element name="ViewPoint" type="ViewPoint" minOccurs="0" maxOccurs="unbounded"/>
+                    </xs:sequence>
+                </xs:complexType>
+            </xs:element>
+        </xs:sequence>
+        <xs:attribute name="Guid" type="Guid" use="required"/>
+        <xs:attribute name="ServerAssignedId" type="NonEmptyOrBlankString" use="optional"/>
+        <xs:attribute name="TopicType" type="NonEmptyOrBlankString" use="required"/>
+        <xs:attribute name="TopicStatus" type="NonEmptyOrBlankString" use="required"/>
+    </xs:complexType>
+    <xs:complexType name="File">
+        <xs:sequence>
+            <xs:element name="Filename" type="NonEmptyOrBlankString" minOccurs="0"/>
+            <xs:element name="Date" type="xs:dateTime" minOccurs="0"/>
+            <!-- Reference (URL) of the file -->
+            <xs:element name="Reference" type="NonEmptyOrBlankString" minOccurs="0"/>
+        </xs:sequence>
+        <xs:attributeGroup ref="FileAttributes"/>
+    </xs:complexType>
+    <xs:attributeGroup name="FileAttributes">
+        <xs:attribute name="IfcProject" type="IfcGuid" use="optional"/>
+        <xs:attribute name="IfcSpatialStructureElement" type="IfcGuid" use="optional"/>
+        <xs:attribute name="IsExternal" type="xs:boolean" default="true"/>
+    </xs:attributeGroup>
+    <!-- Reference to a document inside of the topic folder or a url pointing to the web -->
+    <xs:complexType name="DocumentReference">
+        <xs:sequence>
+            <xs:choice>
+                <!-- Guid of the document: If pointing to an internal document -->
+                <xs:element name="DocumentGuid" type="Guid" minOccurs="0"/>
+                <!-- Url of the reference. If pointing to an external document -->
+                <xs:element name="Url" type="NonEmptyOrBlankString" minOccurs="0"/>
+            </xs:choice>
+            <!-- Human readable description of the document reference -->
+            <xs:element name="Description" type="NonEmptyOrBlankString" minOccurs="0"/>
+        </xs:sequence>
+        <xs:attributeGroup ref="DocumentReferenceAttributes"/>
+    </xs:complexType>
+    <xs:attributeGroup name="DocumentReferenceAttributes">
+        <!-- Guid of the document reference -->
+        <xs:attribute name="Guid" type="Guid" use="required"/>
+    </xs:attributeGroup>
+    <xs:complexType name="Comment">
+        <xs:sequence>
+            <xs:element name="Date" type="xs:dateTime"/>
+            <xs:element name="Author" type="NonEmptyOrBlankString"/>
+            <xs:element name="Comment" minOccurs="0" type="NonEmptyOrBlankString"/>
+            <xs:element name="Viewpoint" minOccurs="0">
+                <xs:complexType>
+                    <xs:attribute name="Guid" type="Guid" use="required"/>
+                </xs:complexType>
+            </xs:element>
+            <xs:element name="ModifiedDate" type="xs:dateTime" minOccurs="0"/>
+            <xs:element name="ModifiedAuthor" type="NonEmptyOrBlankString" minOccurs="0"/>
+        </xs:sequence>
+        <xs:attribute name="Guid" type="Guid" use="required"/>
+    </xs:complexType>
+    <xs:simpleType name="IfcGuid">
+        <xs:restriction base="xs:string">
+            <xs:length value="22"/>
+            <xs:pattern value="[0-9A-Za-z_$]*"/>
+        </xs:restriction>
+    </xs:simpleType>
+</xs:schema>

src/bcf/bcf/v3/xsd/project.xsd

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
+    <xs:include schemaLocation="shared-types.xsd"/>
+    <xs:element name="ProjectInfo">
+        <xs:complexType>
+            <xs:sequence>
+                <xs:element name="Project" type="Project"/>
+            </xs:sequence>
+        </xs:complexType>
+    </xs:element>
+    <xs:complexType name="Project">
+        <xs:sequence>
+            <xs:element name="Name" type="NonEmptyOrBlankString" minOccurs="0"/>
+        </xs:sequence>
+        <xs:attribute name="ProjectId" type="NonEmptyOrBlankString" use="required"/>
+    </xs:complexType>
+</xs:schema>

src/bcf/bcf/v3/xsd/shared-types.xsd

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
+    <xs:simpleType name="Guid">
+        <xs:restriction base="xs:string">
+            <xs:pattern value="[a-f0-9]{8}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{4}-[a-f0-9]{12}"/>
+        </xs:restriction>
+    </xs:simpleType>
+    <xs:simpleType name="NonEmptyOrBlankString">
+        <xs:restriction base="xs:string">
+            <xs:minLength value="1"/>
+            <xs:whiteSpace value="collapse"/>
+        </xs:restriction>
+    </xs:simpleType>
+</xs:schema>

src/bcf/bcf/v3/xsd/version.xsd

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
+    <xs:element name="Version">
+        <xs:complexType>
+            <xs:attribute name="VersionId" type="xs:string" use="required"/>
+        </xs:complexType>
+    </xs:element>
+</xs:schema>

src/bcf/bcf/v3/xsd/visinfo.xsd

@@ -0,0 +1,220 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified">
+    <xs:include schemaLocation="shared-types.xsd"/>
+    <xs:element name="VisualizationInfo">
+        <xs:annotation>
+            <xs:documentation>VisualizationInfo documentation</xs:documentation>
+        </xs:annotation>
+        <xs:complexType>
+            <xs:sequence>
+                <!--
+                Although plural, 'Components' is not a collection
+                -->
+                <xs:element name="Components" type="Components" minOccurs="0"/>
+                <xs:choice>
+                    <xs:element name="OrthogonalCamera" type="OrthogonalCamera"/>
+                    <xs:element name="PerspectiveCamera" type="PerspectiveCamera"/>
+                </xs:choice>
+                <xs:element name="Lines" minOccurs="0">
+                    <xs:complexType>
+                        <xs:sequence>
+                            <xs:element name="Line" type="Line" minOccurs="0" maxOccurs="unbounded"/>
+                        </xs:sequence>
+                    </xs:complexType>
+                </xs:element>
+                <xs:element name="ClippingPlanes" minOccurs="0">
+                    <xs:complexType>
+                        <xs:sequence>
+                            <xs:element name="ClippingPlane" type="ClippingPlane" minOccurs="0" maxOccurs="unbounded"/>
+                        </xs:sequence>
+                    </xs:complexType>
+                </xs:element>
+                <xs:element name="Bitmaps" minOccurs="0">
+                    <xs:complexType>
+                        <xs:sequence>
+                            <xs:element name="Bitmap" type="Bitmap" minOccurs="0" maxOccurs="unbounded"/>
+                        </xs:sequence>
+                    </xs:complexType>
+                </xs:element>
+            </xs:sequence>
+            <!-- Guid of the viewpoint -->
+            <xs:attribute name="Guid" type="Guid" use="required"/>
+        </xs:complexType>
+    </xs:element>
+    <xs:complexType name="OrthogonalCamera">
+        <xs:sequence>
+            <xs:element name="CameraViewPoint" type="Point"/>
+            <xs:element name="CameraDirection" type="Direction"/>
+            <xs:element name="CameraUpVector" type="Direction"/>
+            <xs:element name="ViewToWorldScale" type="xs:double">
+                <xs:annotation>
+                    <xs:documentation>view's visible vertical size in meters</xs:documentation>
+                </xs:annotation>
+            </xs:element>
+            <xs:element name="AspectRatio" type="PositiveDouble">
+                <xs:annotation>
+                    <xs:documentation>
+                        Proportional relationship between the width and the height of the view (w/h).
+                    </xs:documentation>
+                </xs:annotation>
+            </xs:element>
+        </xs:sequence>
+    </xs:complexType>
+    <xs:complexType name="PerspectiveCamera">
+        <xs:sequence>
+            <xs:element name="CameraViewPoint" type="Point"/>
+            <xs:element name="CameraDirection" type="Direction"/>
+            <xs:element name="CameraUpVector" type="Direction"/>
+            <xs:element name="FieldOfView" type="FieldOfView">
+                <xs:annotation>
+                    <xs:documentation>
+                        Vertical field of view, in degrees.
+                        It is currently limited to a value between 45 and 60 degrees.
+                        This limitation will be dropped in the next release and viewers
+                        should be expect values outside this range in current implementations.
+                    </xs:documentation>
+                </xs:annotation>
+            </xs:element>
+            <xs:element name="AspectRatio" type="PositiveDouble">
+                <xs:annotation>
+                    <xs:documentation>
+                        Proportional relationship between the width and the height of the view (w/h).
+                    </xs:documentation>
+                </xs:annotation>
+            </xs:element>
+        </xs:sequence>
+    </xs:complexType>
+    <xs:complexType name="Point">
+        <xs:sequence>
+            <xs:element name="X" type="xs:double"/>
+            <xs:element name="Y" type="xs:double"/>
+            <xs:element name="Z" type="xs:double"/>
+        </xs:sequence>
+    </xs:complexType>
+    <xs:complexType name="Direction">
+        <xs:sequence>
+            <xs:element name="X" type="xs:double"/>
+            <xs:element name="Y" type="xs:double"/>
+            <xs:element name="Z" type="xs:double"/>
+        </xs:sequence>
+    </xs:complexType>
+    <xs:simpleType name="PositiveDouble">
+        <xs:restriction base="xs:double">
+            <xs:minExclusive value="0"/>
+        </xs:restriction>
+    </xs:simpleType>
+    <xs:simpleType name="FieldOfView">
+        <xs:restriction base="xs:double">
+            <xs:minExclusive value="0"/>
+            <xs:maxExclusive value="180"/>
+        </xs:restriction>
+    </xs:simpleType>
+    <xs:complexType name="Components">
+        <xs:sequence>
+            <!-- Components with relevance to the viewpoint. They should be displayed highlighted or selected in a viewer -->
+            <xs:element name="Selection" type="ComponentSelection" minOccurs="0"/>
+            <xs:element name="Visibility" type="ComponentVisibility" minOccurs="0"/>
+            <xs:element name="Coloring" type="ComponentColoring" minOccurs="0"/>
+        </xs:sequence>
+    </xs:complexType>
+    <xs:complexType name="ComponentSelection">
+        <xs:sequence>
+            <xs:element name="Component" type="Component" minOccurs="0" maxOccurs="unbounded"/>
+        </xs:sequence>
+    </xs:complexType>
+    <xs:complexType name="ComponentVisibility">
+        <xs:sequence>
+            <xs:element name="ViewSetupHints" type="ViewSetupHints" minOccurs="0"/>
+            <xs:element name="Exceptions" minOccurs="0">
+                <!-- List Components that are different than the DefaultVisibility. E.g. if DefaultVisibility = false then list
+                     Components that should be visible -->
+                <xs:complexType>
+                    <xs:sequence>
+                        <xs:element name="Component" type="Component" minOccurs="0" maxOccurs="unbounded"/>
+                    </xs:sequence>
+                </xs:complexType>
+            </xs:element>
+        </xs:sequence>
+        <xs:attribute name="DefaultVisibility" type="xs:boolean" default="false"/>
+    </xs:complexType>
+    <xs:complexType name="ViewSetupHints">
+        <xs:attribute name="SpacesVisible" type="xs:boolean" default="false"/>
+        <xs:attribute name="SpaceBoundariesVisible" type="xs:boolean" default="false"/>
+        <xs:attribute name="OpeningsVisible" type="xs:boolean" default="false"/>
+    </xs:complexType>
+    <xs:complexType name="ComponentColoring">
+        <xs:sequence>
+            <xs:element name="Color" minOccurs="0" maxOccurs="unbounded">
+                <xs:complexType>
+                    <xs:sequence>
+                        <!-- At least one component is required for a Color. -->
+                        <xs:element name="Components">
+                            <xs:complexType>
+                                <xs:sequence>
+                                    <xs:element name="Component" type="Component" maxOccurs="unbounded"/>
+                                </xs:sequence>
+                            </xs:complexType>
+                        </xs:element>
+                    </xs:sequence>
+                    <xs:attribute ref="Color" use="required"/>
+                </xs:complexType>
+            </xs:element>
+        </xs:sequence>
+    </xs:complexType>
+    <xs:complexType name="Component">
+        <xs:sequence>
+            <xs:element name="OriginatingSystem" type="NonEmptyOrBlankString" minOccurs="0"/>
+            <xs:element name="AuthoringToolId" type="NonEmptyOrBlankString" minOccurs="0"/>
+        </xs:sequence>
+        <xs:attribute ref="IfcGuid"/>
+    </xs:complexType>
+    <xs:attribute name="Color">
+        <xs:simpleType>
+            <xs:restriction base="xs:normalizedString">
+                <!-- Should either match 3 or 4 hex bytes , e.g. "FF00FF" or "FF00FF99" -->
+                <xs:pattern value="[0-9A-Fa-f]{6}([0-9A-Fa-f]{2})?"/>
+            </xs:restriction>
+        </xs:simpleType>
+    </xs:attribute>
+    <xs:attribute name="IfcGuid">
+        <xs:simpleType>
+            <xs:restriction base="xs:normalizedString">
+                <xs:length value="22"/>
+                <xs:pattern value="[0-9A-Za-z_$]*"/>
+            </xs:restriction>
+        </xs:simpleType>
+    </xs:attribute>
+    <xs:complexType name="Line">
+        <xs:sequence>
+            <xs:element name="StartPoint" type="Point"/>
+            <xs:element name="EndPoint" type="Point"/>
+        </xs:sequence>
+    </xs:complexType>
+    <xs:complexType name="ClippingPlane">
+        <xs:sequence>
+            <xs:element name="Location" type="Point"/>
+            <xs:element name="Direction" type="Direction"/>
+        </xs:sequence>
+    </xs:complexType>
+    <xs:complexType name="Bitmap">
+        <xs:sequence>
+            <xs:element name="Format" type="BitmapFormat"/>
+            <!-- Name of the bitmap file in the topic folder -->
+            <xs:element name="Reference" type="NonEmptyOrBlankString"/>
+            <!-- Location of the center of the bitmap -->
+            <xs:element name="Location" type="Point"/>
+            <!-- Normal of the bitmap -->
+            <xs:element name="Normal" type="Direction"/>
+            <!-- Upvector of the bitmap -->
+            <xs:element name="Up" type="Direction"/>
+            <!-- Height of the bitmap -->
+            <xs:element name="Height" type="xs:double"/>
+        </xs:sequence>
+    </xs:complexType>
+    <xs:simpleType name="BitmapFormat">
+        <xs:restriction base="xs:string">
+            <xs:enumeration value="png"/>
+            <xs:enumeration value="jpg"/>
+        </xs:restriction>
+    </xs:simpleType>
+</xs:schema>

src/bcf/requirements.txt

@@ -0,0 +1 @@
+xmlschema

src/blenderbim/COPYING

@@ -0,0 +1,621 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
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+
+  All other non-permissive additional terms are considered "further
+restrictions" within the meaning of section 10.  If the Program as you
+received it, or any part of it, contains a notice stating that it is
+governed by this License along with a term that is a further
+restriction, you may remove that term.  If a license document contains
+a further restriction but permits relicensing or conveying under this
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+
+  Additional terms, permissive or non-permissive, may be stated in the
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+the above requirements apply either way.
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+  Termination of your rights under this section does not terminate the
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+
+  9. Acceptance Not Required for Having Copies.
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+  You are not required to accept this License in order to receive or
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+occurring solely as a consequence of using peer-to-peer transmission
+to receive a copy likewise does not require acceptance.  However,
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+
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+
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+any patent claim is infringed by making, using, selling, offering for
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+
+  11. Patents.
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+  A contributor's "essential patent claims" are all patent claims
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+  In the following three paragraphs, a "patent license" is any express
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+
+  If you convey a covered work, knowingly relying on a patent license,
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+
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+
+  A patent license is "discriminatory" if it does not include within
+the scope of its coverage, prohibits the exercise of, or is
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+contain the covered work, unless you entered into that arrangement,
+or that patent license was granted, prior to 28 March 2007.
+
+  Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+  12. No Surrender of Others' Freedom.
+
+  If conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
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+not convey it at all.  For example, if you agree to terms that obligate you
+to collect a royalty for further conveying from those to whom you convey
+the Program, the only way you could satisfy both those terms and this
+License would be to refrain entirely from conveying the Program.
+
+  13. Use with the GNU Affero General Public License.
+
+  Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU Affero General Public License into a single
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+but the special requirements of the GNU Affero General Public License,
+section 13, concerning interaction through a network will apply to the
+combination as such.
+
+  14. Revised Versions of this License.
+
+  The Free Software Foundation may publish revised and/or new versions of
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+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU General
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+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
+versions of the GNU General Public License can be used, that proxy's
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+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
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+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
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+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
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+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
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+  16. Limitation of Liability.
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+SUCH DAMAGES.
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+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS

src/blenderbim/Makefile

@@ -1,43 +1,59 @@
 VERSION:=`date '+%y%m%d'`
 PYVERSION:=py37
 
-ifeq ($(PLATFORM), win)
 ifeq ($(PYVERSION), py37)
-PYTHONOCC_URL:=https://anaconda.org/DLR-SC/pythonocc-core/0.17.3/download/win-64/pythonocc-core-0.17.3-py37he980bc4_10.tar.bz2
-OCE_URL:=https://anaconda.org/DLR-SC/oce/0.17.2/download/win-64/oce-0.17.2-he980bc4_14.tar.bz2
-TBB_URL:=https://anaconda.org/DLR-SC/tbb/2019.5/download/win-64/tbb-2019.5-he980bc4_0.tar.bz2
+PYLIBDIR:=python3.7
 endif
 ifeq ($(PYVERSION), py39)
-PYTHONOCC_URL:=https://anaconda.org/conda-forge/pythonocc-core/7.4.1/download/win-64/pythonocc-core-7.4.1-py39h3d1c7c5_0.tar.bz2
-OCE_URL:=https://anaconda.org/conda-forge/occt/7.4.0/download/win-64/occt-7.4.0-h823b557_3.tar.bz2
-TBB_URL:=https://anaconda.org/conda-forge/tbb/2020.2/download/win-64/tbb-2020.2-h2d74725_4.tar.bz2
-endif
-endif
-
-ifeq ($(PLATFORM), macos)
-ifeq ($(PYVERSION), py37)
-PYTHONOCC_URL:=https://anaconda.org/DLR-SC/pythonocc-core/0.17.3/download/osx-64/pythonocc-core-0.17.3-py37h04f5b5a_10.tar.bz2
-OCE_URL:=https://anaconda.org/DLR-SC/oce/0.17.2/download/osx-64/oce-0.17.2-h04f5b5a_12.tar.bz2
-TBB_URL:=https://anaconda.org/DLR-SC/tbb/4.3.6/download/osx-64/tbb-4.3.6-0.tar.bz2
-endif
-ifeq ($(PYVERSION), py39)
-PYTHONOCC_URL:=https://anaconda.org/conda-forge/pythonocc-core/7.4.1/download/osx-64/pythonocc-core-7.4.1-py39h4d29fe3_0.tar.bz2
-OCE_URL:=https://anaconda.org/conda-forge/occt/7.4.0/download/osx-64/occt-7.4.0-hb9b6dc7_3.tar.bz2
-TBB_URL:=https://anaconda.org/conda-forge/tbb/2020.2/download/osx-64/tbb-2020.2-h940c156_4.tar.bz2
-endif
+PYLIBDIR:=python3.9
 endif
 
 ifeq ($(PLATFORM), linux)
 ifeq ($(PYVERSION), py37)
-PYTHONOCC_URL:=https://anaconda.org/DLR-SC/pythonocc-core/0.17.3/download/linux-64/pythonocc-core-0.17.3-py37h6bb024c_10.tar.bz2
-OCE_URL:=https://anaconda.org/DLR-SC/oce/0.17.2/download/linux-64/oce-0.17.2-h6bb024c_14.tar.bz2
-TBB_URL:=https://anaconda.org/DLR-SC/tbb/4.3.6/download/linux-64/tbb-4.3.6-0.tar.bz2
+HPPFCL_URL:=https://anaconda.org/conda-forge/hpp-fcl/1.7.5/download/linux-64/hpp-fcl-1.7.5-py37h5f1835d_0.tar.bz2
+EIGENPY_URL:=https://anaconda.org/conda-forge/eigenpy/2.6.5/download/linux-64/eigenpy-2.6.5-py37h95e2c48_0.tar.bz2
+BOOST_URL:=https://anaconda.org/conda-forge/boost/1.74.0/download/linux-64/boost-1.74.0-py37h0379df6_3.tar.bz2
 endif
 ifeq ($(PYVERSION), py39)
-PYTHONOCC_URL:=https://anaconda.org/conda-forge/pythonocc-core/7.4.1/download/linux-64/pythonocc-core-7.4.1-py39h465cb30_0.tar.bz2
-OCE_URL:=https://anaconda.org/conda-forge/occt/7.4.0/download/linux-64/occt-7.4.0-h9121d39_3.tar.bz2
-TBB_URL:=https://anaconda.org/conda-forge/tbb/2020.2/download/linux-64/tbb-2020.2-h4bd325d_4.tar.bz2
+HPPFCL_URL:=https://anaconda.org/conda-forge/hpp-fcl/1.7.5/download/linux-64/hpp-fcl-1.7.5-py39hbcdfc36_0.tar.bz2
+EIGENPY_URL:=https://anaconda.org/conda-forge/eigenpy/2.6.5/download/linux-64/eigenpy-2.6.5-py39h5aed9d1_0.tar.bz2
+BOOST_URL:=https://anaconda.org/conda-forge/boost/1.74.0/download/linux-64/boost-1.74.0-py39h5472131_3.tar.bz2
 endif
+ASSIMP_URL:=https://anaconda.org/conda-forge/assimp/5.0.1/download/linux-64/assimp-5.0.1-hedfc422_6.tar.bz2
+OCTOMAP_URL:=https://anaconda.org/conda-forge/octomap/1.9.7/download/linux-64/octomap-1.9.7-h4bd325d_0.tar.bz2
+ZLIB_URL:=https://anaconda.org/conda-forge/zlib/1.2.11/download/linux-64/zlib-1.2.11-h516909a_1010.tar.bz2
+endif
+
+ifeq ($(PLATFORM), macos)
+ifeq ($(PYVERSION), py37)
+HPPFCL_URL:=https://anaconda.org/conda-forge/hpp-fcl/1.7.5/download/osx-64/hpp-fcl-1.7.5-py37h2d7f23a_0.tar.bz2
+EIGENPY_URL:=https://anaconda.org/conda-forge/eigenpy/2.6.5/download/osx-64/eigenpy-2.6.5-py37h0695097_0.tar.bz2
+BOOST_URL:=https://anaconda.org/conda-forge/boost/1.74.0/download/osx-64/boost-1.74.0-py37hd79e0ac_3.tar.bz2
+endif
+ifeq ($(PYVERSION), py39)
+HPPFCL_URL:=https://anaconda.org/conda-forge/hpp-fcl/1.7.5/download/osx-64/hpp-fcl-1.7.5-py39h1e32b98_0.tar.bz2
+EIGENPY_URL:=https://anaconda.org/conda-forge/eigenpy/2.6.5/download/osx-64/eigenpy-2.6.5-py39h5405915_0.tar.bz2
+BOOST_URL:=https://anaconda.org/conda-forge/boost/1.74.0/download/osx-64/boost-1.74.0-py39ha641261_3.tar.bz2
+endif
+ASSIMP_URL:=https://anaconda.org/conda-forge/assimp/5.0.1/download/osx-64/assimp-5.0.1-h1224e73_6.tar.bz2
+OCTOMAP_URL:=https://anaconda.org/conda-forge/octomap/1.9.7/download/osx-64/octomap-1.9.7-h940c156_0.tar.bz2
+ZLIB_URL:=https://anaconda.org/conda-forge/zlib/1.2.11/download/osx-64/zlib-1.2.11-h7795811_1010.tar.bz2
+endif
+
+ifeq ($(PLATFORM), win)
+ifeq ($(PYVERSION), py37)
+HPPFCL_URL:=https://anaconda.org/conda-forge/hpp-fcl/1.7.5/download/win-64/hpp-fcl-1.7.5-py37h839d6b1_0.tar.bz2
+EIGENPY_URL:=https://anaconda.org/conda-forge/eigenpy/2.6.5/download/win-64/eigenpy-2.6.5-py37h2c32e34_0.tar.bz2
+BOOST_URL:=https://anaconda.org/conda-forge/boost/1.74.0/download/win-64/boost-1.74.0-py37h3b38789_3.tar.bz2
+endif
+ifeq ($(PYVERSION), py39)
+HPPFCL_URL:=https://anaconda.org/conda-forge/hpp-fcl/1.7.5/download/win-64/hpp-fcl-1.7.5-py39h2e7c763_0.tar.bz2
+EIGENPY_URL:=https://anaconda.org/conda-forge/eigenpy/2.6.5/download/win-64/eigenpy-2.6.5-py39h3ce40e6_0.tar.bz2
+BOOST_URL:=https://anaconda.org/conda-forge/boost/1.74.0/download/win-64/boost-1.74.0-py39hefe7e4c_3.tar.bz2
+endif
+ASSIMP_URL:=https://anaconda.org/conda-forge/assimp/5.0.1/download/win-64/assimp-5.0.1-hc2aa0de_6.tar.bz2
+OCTOMAP_URL:=https://anaconda.org/conda-forge/octomap/1.9.7/download/win-64/octomap-1.9.7-h5362a0b_0.tar.bz2
+ZLIB_URL:=https://anaconda.org/conda-forge/zlib/1.2.11/download/win-64/zlib-1.2.11-h62dcd97_1010.tar.bz2
 endif
 
 .PHONY: dist
@@ -52,22 +68,22 @@ endif
 
 	# Provides IfcOpenShell Python functionality
 ifeq ($(PYVERSION), py37)
-	cd dist/working && wget https://s3.amazonaws.com/ifcopenshell-builds/ifcblender-python-37-v0.6.0-517b819-$(PLATFORM)64.zip
+	cd dist/working && wget https://s3.amazonaws.com/ifcopenshell-builds/ifcblender-python-37-v0.6.0-f14d349-$(PLATFORM)64.zip
 endif
 ifeq ($(PYVERSION), py39)
-	cd dist/working && wget https://s3.amazonaws.com/ifcopenshell-builds/ifcblender-python-39-v0.6.0-517b819-$(PLATFORM)64.zip
+	cd dist/working && wget https://s3.amazonaws.com/ifcopenshell-builds/ifcblender-python-39-v0.6.0-f14d349-$(PLATFORM)64.zip
 endif
 	cd dist/working && unzip ifcblender*
 	cp -r dist/working/io_import_scene_ifc/ifcopenshell dist/blenderbim/libs/site/packages/
 
 	# See bug #812
-	cd dist/working && wget https://raw.githubusercontent.com/IfcOpenShell/IfcOpenShell/v0.6.0/src/ifcblenderexport/occ_utils.py
+	cd dist/working && wget https://raw.githubusercontent.com/IfcOpenShell/IfcOpenShell/v0.6.0/src/blenderbim/occ_utils.py
 	cd dist/working && mv occ_utils.py ../blenderbim/libs/site/packages/ifcopenshell/geom/occ_utils.py
 	rm -rf dist/working
 
 	# Provides IfcConvert for construction documentation
 	mkdir dist/working
-	cd dist/working && wget https://s3.amazonaws.com/ifcopenshell-builds/IfcConvert-v0.6.0-517b819-$(PLATFORM)64.zip
+	cd dist/working && wget https://s3.amazonaws.com/ifcopenshell-builds/IfcConvert-v0.6.0-81ad689-$(PLATFORM)64.zip
 	cd dist/working && unzip IfcConvert*
 ifeq ($(PLATFORM), win)
 	cp -r dist/working/IfcConvert.exe dist/blenderbim/libs/
@@ -76,77 +92,24 @@ else
 endif
 	rm -rf dist/working
 
-	# Provides Python OCC functionality for cutting IFC geometry for construction documentation
-	mkdir dist/working
-	cd dist/working && wget $(PYTHONOCC_URL)
-	cd dist/working && tar -xjvf pythonocc-core*
-ifeq ($(PLATFORM), win)
-	cd dist/working && cp -r Lib/site-packages/OCC ../blenderbim/libs/site/packages/
-else
-ifeq ($(PYVERSION), py37)
-	cd dist/working && cp -r lib/python3.7/site-packages/OCC ../blenderbim/libs/site/packages/
-endif
-ifeq ($(PYVERSION), py39)
-	cd dist/working && cp -r lib/python3.9/site-packages/OCC ../blenderbim/libs/site/packages/
-endif
-endif
-	rm -rf dist/working
-
-	# Required by Python OCC
-	mkdir dist/working
-	cd dist/working && wget $(OCE_URL)
-	cd dist/working && tar -xjvf oc*
-ifeq ($(PLATFORM), win)
-ifeq ($(PYVERSION), py37)
-	cd dist/working && cp -r Library/bin/* ../blenderbim/libs/site/packages/OCC/
-endif
-ifeq ($(PYVERSION), py39)
-	cd dist/working && cp -r Library/bin/* ../blenderbim/libs/site/packages/OCC/Core/
-endif
-else
-	# Unix Conda builds of PythonOCC expect OCE libs to have a RPATH of ../../../
-	cd dist/working && cp -r lib/* ../blenderbim/libs/
-endif
-ifeq ($(PLATFORM), linux)
-	rm -rf dist/blenderbim/libs/oce-0.17
-endif
-	rm -rf dist/working
-
-	# Required by OpenCascade
-	mkdir dist/working
-	cd dist/working && wget $(TBB_URL)
-	cd dist/working && tar -xjvf tbb*
-ifeq ($(PLATFORM), win)
-ifeq ($(PYVERSION), py37)
-	cd dist/working && cp -r Library/bin/* ../blenderbim/libs/site/packages/OCC/
-endif
-ifeq ($(PYVERSION), py39)
-	cd dist/working && cp -r Library/bin/* ../blenderbim/libs/site/packages/OCC/Core/
-endif
-else
-	cd dist/working && cp -r lib/* ../blenderbim/libs/
-endif
-	rm -rf dist/working
-
-ifeq ($(PLATFORM), macos)
-	mkdir dist/working
-	cd dist/working && wget https://blenderbim.org/builds/patch-blender28-bim-macos.zip
-	cd dist/working && unzip patch*
-	cd dist/working && cp -r *.dylib ../blenderbim/libs/
-	rm -rf dist/working
-endif
-
 	# Provides dependencies that are part of IfcOpenShell
 	mkdir dist/working
 	cd dist/working && wget https://github.com/IfcOpenShell/IfcOpenShell/archive/v0.6.0.zip
 	cd dist/working && unzip v0.6.0.zip
 	# IfcOpenBot sometimes lags behind, so we hotfix the Python utilities
 	cp -r dist/working/IfcOpenShell-0.6.0/src/ifcopenshell-python/ifcopenshell/util/* dist/blenderbim/libs/site/packages/ifcopenshell/util/
+	cp -r dist/working/IfcOpenShell-0.6.0/src/ifcopenshell-python/ifcopenshell/api/* dist/blenderbim/libs/site/packages/ifcopenshell/api/
+	cp dist/working/IfcOpenShell-0.6.0/src/ifcopenshell-python/ifcopenshell/entity_instance.py dist/blenderbim/libs/site/packages/ifcopenshell/
+	cp dist/working/IfcOpenShell-0.6.0/src/ifcopenshell-python/ifcopenshell/file.py dist/blenderbim/libs/site/packages/ifcopenshell/
 	# Provides bcf functionality
 	cp -r dist/working/IfcOpenShell-0.6.0/src/bcf/bcf dist/blenderbim/libs/site/packages/
 	# Provides IFCClash functionality
-	cp -r dist/working/IfcOpenShell-0.6.0/src/ifcclash/* dist/blenderbim/libs/site/packages/
+	cp -r dist/working/IfcOpenShell-0.6.0/src/ifcclash/ifcclash dist/blenderbim/libs/site/packages/
 	# Provides BIMTester functionality
+	cd dist/working && python -m venv env
+	cd dist/working && . env/bin/activate && pip install pybabel
+	cd dist/working && . env/bin/activate && pip install babel
+	cd dist/working && . env/bin/activate && ./env/bin/pybabel compile -d ./IfcOpenShell-0.6.0/src/ifcbimtester/bimtester/locale/
 	cp -r dist/working/IfcOpenShell-0.6.0/src/ifcbimtester/bimtester dist/blenderbim/libs/site/packages/
 	# Provides IFCCOBie functionality
 	cp -r dist/working/IfcOpenShell-0.6.0/src/ifccobie/* dist/blenderbim/libs/site/packages/
@@ -156,6 +119,8 @@ endif
 	cp -r dist/working/IfcOpenShell-0.6.0/src/ifccsv/* dist/blenderbim/libs/site/packages/
 	# Provides IFCPatch functionality
 	cp -r dist/working/IfcOpenShell-0.6.0/src/ifcpatch/ifcpatch dist/blenderbim/libs/site/packages/
+	# Provides IFCP6 functionality
+	cp -r dist/working/IfcOpenShell-0.6.0/src/ifcp6/ifcp6 dist/blenderbim/libs/site/packages/
 	rm -rf dist/working
 
 	# Provides Mustache templating in construction documentation
@@ -172,6 +137,41 @@ endif
 	cp -r dist/working/svgwrite-1.3.1/svgwrite dist/blenderbim/libs/site/packages/
 	rm -rf dist/working
 
+	# Provides fuzzy date parsing for construction sequencing
+	mkdir dist/working
+	cd dist/working && wget https://files.pythonhosted.org/packages/be/ed/5bbc91f03fa4c839c4c7360375da77f9659af5f7086b7a7bdda65771c8e0/python-dateutil-2.8.1.tar.gz
+	cd dist/working && tar -xzvf python-dateutil*
+	cp -r dist/working/python-dateutil-2.8.1/dateutil dist/blenderbim/libs/site/packages/
+	rm -rf dist/working
+
+	# Provides duration parsing for construction sequencing
+	mkdir dist/working
+	cd dist/working && wget https://files.pythonhosted.org/packages/b1/80/fb8c13a4cd38eb5021dc3741a9e588e4d1de88d895c1910c6fc8a08b7a70/isodate-0.6.0.tar.gz
+	cd dist/working && tar -xzvf isodate*
+	cp -r dist/working/isodate-0.6.0/src/isodate dist/blenderbim/libs/site/packages/
+	rm -rf dist/working
+
+	# Provides networkx graph analysis for project dependency calculations
+	mkdir dist/working
+	cd dist/working && wget https://files.pythonhosted.org/packages/b0/21/adfbf6168631e28577e4af9eb9f26d75fe72b2bb1d33762a5f2c425e6c2a/networkx-2.5.1.tar.gz
+	cd dist/working && tar -xzvf networkx*
+	cp -r dist/working/networkx-2.5.1/networkx dist/blenderbim/libs/site/packages/
+	rm -rf dist/working
+
+	# Required by networkx
+	mkdir dist/working
+	cd dist/working && wget https://files.pythonhosted.org/packages/4f/51/15a4f6b8154d292e130e5e566c730d8ec6c9802563d58760666f1818ba58/decorator-5.0.9.tar.gz
+	cd dist/working && tar -xzvf decorator*
+	cp -r dist/working/decorator-5.0.9/src/decorator.py dist/blenderbim/libs/site/packages/
+	rm -rf dist/working
+
+	# Provides jsgantt-improved supports for web-based construction sequencing gantt charts
+	mkdir dist/working
+	cd dist/working && wget https://raw.githubusercontent.com/jsGanttImproved/jsgantt-improved/master/dist/jsgantt.js
+	cd dist/working && wget https://raw.githubusercontent.com/jsGanttImproved/jsgantt-improved/master/dist/jsgantt.css
+	cp dist/working/jsgantt* dist/blenderbim/bim/data/gantt/
+	rm -rf dist/working
+
 	# Required by IFCDiff
 	mkdir dist/working
 	cd dist/working && wget https://github.com/Moult/deepdiff/archive/master.zip
@@ -229,26 +229,108 @@ endif
 	rm -rf dist/working
 
 	# Required by IFCClash
-ifeq ($(PLATFORM), linux)
 	mkdir dist/working
-	cd dist/working && wget https://files.pythonhosted.org/packages/0c/fa/00d85f893b02289e2942849d97f8818dde8e2111182e825fb3a735677791/python_fcl-0.0.12-cp37-cp37m-manylinux1_x86_64.whl
-	cd dist/working && unzip python_fcl*
-	cp -r dist/working/fcl dist/blenderbim/libs/site/packages/
-	rm -rf dist/working
+	cd dist/working && wget $(HPPFCL_URL)
+	cd dist/working && tar -xf hpp-fcl*
+ifeq ($(PLATFORM), linux)
+	cp -r dist/working/lib/$(PYLIBDIR)/site-packages/hppfcl dist/blenderbim/libs/site/packages/
+	cp -r dist/working/lib/*.so* dist/blenderbim/libs/
+endif
+ifeq ($(PLATFORM), macos)
+	cp -r dist/working/lib/$(PYLIBDIR)/site-packages/hppfcl dist/blenderbim/libs/site/packages/
+	cp -r dist/working/lib/*.dylib dist/blenderbim/libs/
 endif
 ifeq ($(PLATFORM), win)
-	mkdir dist/working
-	cd dist/working && wget https://files.pythonhosted.org/packages/19/e6/6e9f33fb59e8f27c0e1592bd26e644bc92b85c942b072b2d3854105d5887/python_fcl_win32-0.0.12.post3-py3-none-win_amd64.whl
-	cd dist/working && unzip python_fcl*
-	cp -r dist/working/fcl dist/blenderbim/libs/site/packages/
-	rm -rf dist/working
+	cp -r dist/working/Lib/site-packages/hppfcl dist/blenderbim/libs/site/packages/
+	cp -r dist/working/Library/bin/*.dll dist/blenderbim/libs/site/packages/hppfcl/
 endif
+	rm -rf dist/working
+
+	# Required by hpp-fcl
+	mkdir dist/working
+	cd dist/working && wget $(ASSIMP_URL)
+	cd dist/working && tar -xf assimp*
+ifeq ($(PLATFORM), linux)
+	cp -r dist/working/lib/*.so* dist/blenderbim/libs/
+endif
+ifeq ($(PLATFORM), macos)
+	cp -r dist/working/lib/*.dylib dist/blenderbim/libs/
+endif
+ifeq ($(PLATFORM), win)
+	cp -r dist/working/Library/bin/*.dll dist/blenderbim/libs/site/packages/hppfcl/
+endif
+	rm -rf dist/working
+
+	# Required by hpp-fcl
+	mkdir dist/working
+	cd dist/working && wget $(EIGENPY_URL)
+	cd dist/working && tar -xf eigenpy*
+ifeq ($(PLATFORM), linux)
+	cp -r dist/working/lib/*.so* dist/blenderbim/libs/
+endif
+ifeq ($(PLATFORM), macos)
+	cp -r dist/working/lib/*.dylib dist/blenderbim/libs/
+endif
+ifeq ($(PLATFORM), win)
+	cp -r dist/working/Library/bin/*.dll dist/blenderbim/libs/site/packages/hppfcl/
+endif
+	rm -rf dist/working
+
+	# Required by hpp-fcl
+	mkdir dist/working
+	cd dist/working && wget $(OCTOMAP_URL)
+	cd dist/working && tar -xf octomap*
+ifeq ($(PLATFORM), linux)
+	cp -r dist/working/lib/*.so* dist/blenderbim/libs/
+endif
+ifeq ($(PLATFORM), macos)
+	cp -r dist/working/lib/*.dylib dist/blenderbim/libs/
+endif
+ifeq ($(PLATFORM), win)
+	# Uh, do nothing, apparently? No DLLs are shipped.
+endif
+	rm -rf dist/working
+
+	# Required by hpp-fcl
+	mkdir dist/working
+	cd dist/working && wget $(BOOST_URL)
+	cd dist/working && tar -xf boost*
+ifeq ($(PLATFORM), linux)
+	cp -r dist/working/lib/*.so* dist/blenderbim/libs/
+endif
+ifeq ($(PLATFORM), macos)
+	cp -r dist/working/lib/*.dylib dist/blenderbim/libs/
+endif
+ifeq ($(PLATFORM), win)
+	cp -r dist/working/Library/bin/*.dll dist/blenderbim/libs/site/packages/hppfcl/
+endif
+	rm -rf dist/working
+
+	# Required by hpp-fcl
+	mkdir dist/working
+	cd dist/working && wget $(ZLIB_URL)
+	cd dist/working && tar -xf zlib*
+ifeq ($(PLATFORM), linux)
+	cp -r dist/working/lib/*.so* dist/blenderbim/libs/
+endif
+ifeq ($(PLATFORM), macos)
+	cp -r dist/working/lib/*.dylib dist/blenderbim/libs/
+endif
+ifeq ($(PLATFORM), win)
+	cp -r dist/working/Library/bin/*.dll dist/blenderbim/libs/site/packages/hppfcl/
+endif
+	rm -rf dist/working
 
 	# Required by BIMTester
 	mkdir dist/working
 	cd dist/working && wget https://files.pythonhosted.org/packages/c8/4b/d0a8c23b6c8985e5544ea96d27105a273ea22051317f850c2cdbf2029fe4/behave-1.2.6.tar.gz
 	cd dist/working && tar -xzvf behave*
 	cd dist/working/behave-1.2.6/ && cp -r behave ../../blenderbim/libs/site/packages/
+	# See bug #1294
+	cd dist/working/ && wget https://raw.githubusercontent.com/IfcOpenShell/IfcOpenShell/v0.6.0/src/ifcbimtester/patch/model_core.patch
+	cd dist/working/ && wget https://raw.githubusercontent.com/IfcOpenShell/IfcOpenShell/v0.6.0/src/ifcbimtester/patch/runner_util.patch
+	cd dist/working/ && patch ../blenderbim/libs/site/packages/behave/model_core.py < model_core.patch
+	cd dist/working/ && patch ../blenderbim/libs/site/packages/behave/runner_util.py < runner_util.patch
 	rm -rf dist/working
 
 	# Required by behave

src/blenderbim/blenderbim/__init__.py

@@ -15,6 +15,7 @@ import site
 
 # process *.pth in /libs/site/packages to setup globally importable modules
 # 3 levels deep required by occ static ../../ path
+# TODO: 3 levels deep is no longer required as we no longer bundle OCC
 cwd = os.path.dirname(os.path.realpath(__file__))
 site.addsitedir(os.path.join(cwd, "libs", "site", "packages"))
 

src/blenderbim/blenderbim/bim/__init__.py

@@ -6,7 +6,7 @@ bpy = sys.modules.get("bpy")
 if bpy is not None:
     import bpy
     import importlib
-    from . import handler, ui, prop, operator, gizmos
+    from . import handler, ui, prop, operator
 
     modules = {
         "project": None,
@@ -14,6 +14,7 @@ if bpy is not None:
         "bcf": None,
         "root": None,
         "unit": None,
+        "model": None,
         "georeference": None,
         "context": None,
         "drawing": None,
@@ -24,13 +25,17 @@ if bpy is not None:
         "aggregate": None,
         "geometry": None,
         "cobie": None,
+        "resource": None,
+        "cost": None,
         "sequence": None,
         "group": None,
+        "system": None,
         "structural": None,
+        "boundary": None,
+        "profile": None,
         "material": None,
         "style": None,
         "layer": None,
-        "model": None,
         "owner": None,
         "pset": None,
         "qto": None,
@@ -58,99 +63,29 @@ if bpy is not None:
         operator.SelectIfcFile,
         operator.ExportIFC,
         operator.ImportIFC,
-        operator.SelectExternalMaterialDir,
-        operator.AddSweptSolid,
-        operator.RemoveSweptSolid,
-        operator.AssignSweptSolidOuterCurve,
-        operator.SelectSweptSolidOuterCurve,
-        operator.AddSweptSolidInnerCurve,
-        operator.SelectSweptSolidInnerCurves,
-        operator.AssignSweptSolidExtrusion,
-        operator.SelectSweptSolidExtrusion,
-        operator.FetchExternalMaterial,
-        operator.FetchObjectPassport,
-        operator.CutSection,
-        operator.AddSheet,
-        operator.OpenSheet,
-        operator.AddDrawingToSheet,
-        operator.CreateSheets,
-        operator.OpenView,
-        operator.OpenViewCamera,
-        operator.ActivateView,
         operator.OpenUpstream,
         operator.AddSectionPlane,
         operator.RemoveSectionPlane,
         operator.ReloadIfcFile,
         operator.AddIfcFile,
         operator.RemoveIfcFile,
-        operator.SelectDocIfcFile,
-        operator.AddAnnotation,
-        operator.GenerateReferences,
-        operator.ResizeText,
-        operator.AddVariable,
-        operator.RemoveVariable,
-        operator.PropagateTextData,
         operator.SetOverrideColour,
-        operator.RemoveDrawing,
-        operator.AddDrawingStyle,
-        operator.RemoveDrawingStyle,
-        operator.SaveDrawingStyle,
-        operator.ActivateDrawingStyle,
-        operator.EditVectorStyle,
-        operator.RemoveSheet,
-        operator.AddSchedule,
-        operator.RemoveSchedule,
-        operator.SelectScheduleFile,
-        operator.BuildSchedule,
-        operator.AddScheduleToSheet,
         operator.SetViewportShadowFromSun,
-        operator.AddDrawingStyleAttribute,
-        operator.RemoveDrawingStyleAttribute,
-        operator.CopyPropertyToSelection,
-        operator.CopyAttributeToSelection,
-        operator.RefreshDrawingList,
-        operator.CleanWireframes,
         operator.LinkIfc,
         operator.SnapSpacesTogether,
-        operator.CopyGrid,
-        operator.AddSectionsAnnotations,
         prop.StrProperty,
         prop.Attribute,
-        prop.Variable,
-        prop.Drawing,
-        prop.Schedule,
-        prop.DrawingStyle,
-        prop.Sheet,
         prop.BIMProperties,
-        prop.DocProperties,
         prop.IfcParameter,
-        prop.BoundaryCondition,
         prop.PsetQto,
         prop.GlobalId,
-        prop.RepresentationItem,
         prop.BIMObjectProperties,
         prop.BIMMaterialProperties,
-        prop.SweptSolid,
-        prop.ItemSlotMap,
         prop.BIMMeshProperties,
-        prop.BIMCameraProperties,
-        prop.BIMTextProperties,
         ui.BIM_PT_section_plane,
-        ui.BIM_PT_drawings,
-        ui.BIM_PT_schedules,
-        ui.BIM_PT_sheets,
-        ui.BIM_PT_text,
-        ui.BIM_PT_annotation_utilities,
-        ui.BIM_PT_misc_utilities,
         ui.BIM_UL_generic,
-        ui.BIM_UL_drawinglist,
         ui.BIM_UL_topics,
         ui.BIM_ADDON_preferences,
-        gizmos.UglyDotGizmo,
-        gizmos.DotGizmo,
-        gizmos.DimensionLabelGizmo,
-        gizmos.ExtrusionGuidesGizmo,
-        gizmos.ExtrusionWidget
     ]
 
     for module in modules.values():
@@ -170,53 +105,49 @@ if bpy is not None:
         for cls in classes:
             bpy.utils.register_class(cls)
         bpy.app.handlers.depsgraph_update_post.append(on_register)
+        bpy.app.handlers.undo_pre.append(handler.undo_pre)
+        bpy.app.handlers.undo_post.append(handler.undo_post)
+        bpy.app.handlers.redo_pre.append(handler.redo_pre)
+        bpy.app.handlers.redo_post.append(handler.redo_post)
         bpy.app.handlers.load_post.append(handler.setDefaultProperties)
         bpy.app.handlers.load_post.append(handler.loadIfcStore)
         bpy.app.handlers.save_pre.append(handler.ensureIfcExported)
-        bpy.app.handlers.save_pre.append(handler.storeIdMap)
         bpy.types.TOPBAR_MT_file_export.append(menu_func_export)
         bpy.types.TOPBAR_MT_file_import.append(menu_func_import)
         bpy.types.Scene.BIMProperties = bpy.props.PointerProperty(type=prop.BIMProperties)
-        bpy.types.Scene.DocProperties = bpy.props.PointerProperty(type=prop.DocProperties)
         bpy.types.Object.BIMObjectProperties = bpy.props.PointerProperty(type=prop.BIMObjectProperties)
         bpy.types.Material.BIMObjectProperties = bpy.props.PointerProperty(type=prop.BIMObjectProperties)
-        bpy.types.Collection.BIMObjectProperties = bpy.props.PointerProperty(type=prop.BIMObjectProperties) # Check if we need this
+        bpy.types.Collection.BIMObjectProperties = bpy.props.PointerProperty(
+            type=prop.BIMObjectProperties
+        )  # Check if we need this
         bpy.types.Material.BIMMaterialProperties = bpy.props.PointerProperty(type=prop.BIMMaterialProperties)
         bpy.types.Mesh.BIMMeshProperties = bpy.props.PointerProperty(type=prop.BIMMeshProperties)
+        bpy.types.Curve.BIMMeshProperties = bpy.props.PointerProperty(type=prop.BIMMeshProperties)
         bpy.types.Camera.BIMMeshProperties = bpy.props.PointerProperty(type=prop.BIMMeshProperties)
-        bpy.types.Camera.BIMCameraProperties = bpy.props.PointerProperty(type=prop.BIMCameraProperties)
-        bpy.types.TextCurve.BIMTextProperties = bpy.props.PointerProperty(type=prop.BIMTextProperties)
+        bpy.types.PointLight.BIMMeshProperties = bpy.props.PointerProperty(type=prop.BIMMeshProperties)
         bpy.types.SCENE_PT_unit.append(ui.ifc_units)
 
         for module in modules.values():
             module.register()
 
-        bpy.app.handlers.depsgraph_update_pre.append(operator.depsgraph_update_pre_handler)
-        bpy.app.handlers.load_post.append(handler.toggleDecorationsOnLoad)
-
     def unregister():
         for cls in reversed(classes):
             bpy.utils.unregister_class(cls)
         bpy.app.handlers.load_post.remove(handler.setDefaultProperties)
         bpy.app.handlers.load_post.remove(handler.loadIfcStore)
-        bpy.app.handlers.save_pre.remove(handler.storeIdMap)
         bpy.app.handlers.save_pre.remove(handler.ensureIfcExported)
         bpy.types.TOPBAR_MT_file_export.remove(menu_func_export)
         bpy.types.TOPBAR_MT_file_import.remove(menu_func_import)
         del bpy.types.Scene.BIMProperties
-        del bpy.types.Scene.DocProperties
         del bpy.types.Object.BIMObjectProperties
         del bpy.types.Material.BIMObjectProperties
-        del bpy.types.Collection.BIMObjectProperties # Check if we need this
+        del bpy.types.Collection.BIMObjectProperties  # Check if we need this
         del bpy.types.Material.BIMMaterialProperties
         del bpy.types.Mesh.BIMMeshProperties
+        del bpy.types.Curve.BIMMeshProperties
         del bpy.types.Camera.BIMMeshProperties
-        del bpy.types.Camera.BIMCameraProperties
-        del bpy.types.TextCurve.BIMTextProperties
+        del bpy.types.PointLight.BIMMeshProperties
         bpy.types.SCENE_PT_unit.remove(ui.ifc_units)
 
         for module in reversed(list(modules.values())):
             module.unregister()
-
-        bpy.app.handlers.depsgraph_update_pre.remove(operator.depsgraph_update_pre_handler)
-        bpy.app.handlers.load_post.remove(handler.toggleDecorationsOnLoad)

src/blenderbim/blenderbim/bim/data/gantt/index.mustache

@@ -0,0 +1,24 @@
+<link href="jsgantt.css" rel="stylesheet" type="text/css"/>
+<script src="jsgantt.js" type="text/javascript"></script>
+<div style="position:relative" class="gantt" id="GanttChartDIV"></div>
+<script type="text/javascript">
+var g = new JSGantt.GanttChart(document.getElementById('GanttChartDIV'), 'day');
+g.setOptions({
+    vCaptionType: 'Complete',  // Set to Show Caption : None,Caption,Resource,Duration,Complete,
+    vQuarterColWidth: 36,
+    vDateTaskDisplayFormat: 'day dd month yyyy', // Shown in tool tip box
+    vDayMajorDateDisplayFormat: 'mon yyyy - Week ww',// Set format to dates in the "Major" header of the "Day" view
+    vWeekMinorDateDisplayFormat: 'dd mon', // Set format to display dates in the "Minor" header of the "Week" view
+    vLang: 'en',
+    vShowTaskInfoLink: 1, // Show link in tool tip (0/1)
+    vShowEndWeekDate: 0,  // Show/Hide the date for the last day of the week in header for daily
+    vUseSingleCell: 10000, // Set the threshold cell per table row (Helps performance for large data.
+    vFormatArr: ['Day', 'Week', 'Month', 'Quarter'], // Even with setUseSingleCell using Hour format on such a large chart can cause issues in some browsers,
+    vTotalHeight: 1000,
+});
+var json_data = `
+{{{json_data}}}
+`;
+JSGantt.parseJSONString(json_data, g);
+g.Draw();
+</script>

src/blenderbim/blenderbim/bim/data/styles/default.css

@@ -1,6 +1,6 @@
-* { stroke-linecap: round; }
-.cut { fill: black; stroke: black; stroke-linecap: 'round'; stroke-width: 0.35; }
-.background { fill: white; stroke: black; stroke-linecap: 'round'; stroke-width: 0.25; }
+* { stroke-linecap: round; stroke-linejoin: round; }
+*[id] { fill: black; stroke: black; stroke-linecap: 'round'; stroke-width: 0.35; }
+.projection { fill: white; stroke: black; stroke-linecap: 'round'; stroke-width: 0.25; }
 .annotation { fill: none; stroke: black; stroke-linecap: 'round'; stroke-width: 0.25; }
 .hidden { stroke-dasharray: 3, 2; }
 .solid {}

src/blenderbim/blenderbim/bim/data/templates/titleblocks/A1.svg

@@ -25,7 +25,7 @@
     </rdf:RDF>
   </metadata>
   <desc
-     id="desc89610">/home/dion/Projects/IfcOpenShell/src/ifcblenderexport/titleblock.dxf - scale = 1.000000, origin = (0.000000, 0.000000), method = manual</desc>
+     id="desc89610">/home/dion/Projects/IfcOpenShell/src/blenderbim/titleblock.dxf - scale = 1.000000, origin = (0.000000, 0.000000), method = manual</desc>
   <rect
      style="fill:#ffffff;fill-opacity:1;stroke:none;stroke-width:2.07874;stroke-linecap:round;stroke-linejoin:round;stop-color:#000000"
      id="rect1036"

src/blenderbim/blenderbim/bim/data/templates/titleblocks/A2.svg

@@ -25,7 +25,7 @@
     </rdf:RDF>
   </metadata>
   <desc
-     id="desc89610">/home/dion/Projects/IfcOpenShell/src/ifcblenderexport/titleblock.dxf - scale = 1.000000, origin = (0.000000, 0.000000), method = manual</desc>
+     id="desc89610">/home/dion/Projects/IfcOpenShell/src/blenderbim/titleblock.dxf - scale = 1.000000, origin = (0.000000, 0.000000), method = manual</desc>
   <rect
      y="3.1753578e-05"
      x="-4.3300333e-05"

src/blenderbim/blenderbim/bim/data/templates/titleblocks/A3.svg

@@ -25,7 +25,7 @@
     </rdf:RDF>
   </metadata>
   <desc
-     id="desc89610">/home/dion/Projects/IfcOpenShell/src/ifcblenderexport/titleblock.dxf - scale = 1.000000, origin = (0.000000, 0.000000), method = manual</desc>
+     id="desc89610">/home/dion/Projects/IfcOpenShell/src/blenderbim/titleblock.dxf - scale = 1.000000, origin = (0.000000, 0.000000), method = manual</desc>
   <rect
      y="3.1753578e-05"
      x="-4.3300333e-05"

src/blenderbim/blenderbim/bim/export_ifc.py

@@ -7,6 +7,8 @@ import zipfile
 import tempfile
 import ifcopenshell
 import ifcopenshell.util.placement
+import ifcopenshell.api
+from ifcopenshell.api.spatial.data import Data as SpatialData
 from blenderbim.bim.ifc import IfcStore
 import addon_utils
 
@@ -19,7 +21,7 @@ class IfcExporter:
         self.file = IfcStore.get_file()
         self.set_header()
         if bpy.context.scene.BIMProjectProperties.is_authoring:
-            self.sync_object_placements()
+            self.sync_object_placements_and_deletions()
             self.sync_edited_objects()
         extension = self.ifc_export_settings.output_file.split(".")[-1]
         if extension == "ifczip":
@@ -45,12 +47,8 @@ class IfcExporter:
                 jsonData = ifcjson.IFC2JSON5a(self.file, self.ifc_export_settings.json_compact).spf2Json()
                 with open(self.ifc_export_settings.output_file, "w") as outfile:
                     json.dump(jsonData, outfile, indent=None if self.ifc_export_settings.json_compact else 4)
-        if bpy.context.scene.BIMProjectProperties.is_authoring:
-            if bpy.data.filepath:
-                bpy.ops.wm.save_mainfile()
 
     def set_header(self):
-        # TODO: add all metadata, pending bug #747
         self.file.wrapped_data.header.file_name.name = os.path.basename(self.ifc_export_settings.output_file)
         self.file.wrapped_data.header.file_name.time_stamp = (
             datetime.datetime.utcnow()
@@ -63,46 +61,54 @@ class IfcExporter:
         self.file.wrapped_data.header.file_name.originating_system = "{} {}".format(
             self.get_application_name(), self.get_application_version()
         )
-        # TODO: reimplement. See #1222.
-        # if self.owner_history:
-        #    if self.schema_version == "IFC2X3":
-        #        self.file.wrapped_data.header.file_name.authorization = self.owner_history.OwningUser.ThePerson.Id
-        #    else:
-        #        self.file.wrapped_data.header.file_name.authorization = (
-        #            self.owner_history.OwningUser.ThePerson.Identification
-        #        )
-        # else:
-        #    self.file.wrapped_data.header.file_name.authorization = "Nobody"
 
-    def sync_object_placements(self):
+    def sync_object_placements_and_deletions(self):
         self.unit_scale = ifcopenshell.util.unit.calculate_unit_scale(self.file)
-        for obj in bpy.data.objects:
+        to_delete = []
+
+        for ifc_definition_id, obj in IfcStore.id_map.items():
             try:
+                if isinstance(obj, bpy.types.Material):
+                    continue
                 self.sync_object_placement(obj)
-            except:
-                pass
+                self.sync_object_container(ifc_definition_id, obj)
+            except ReferenceError:
+                pass  # The object is likely deleted
+            if self.should_delete(obj):
+                to_delete.append(ifc_definition_id)
+
+        SpatialData.purge()
+
+        for ifc_definition_id in to_delete:
+            product = self.file.by_id(ifc_definition_id)
+            IfcStore.unlink_element(product)
+            ifcopenshell.api.run("root.remove_product", self.file, **{"product": product})
 
     def sync_edited_objects(self):
-        for obj_name in IfcStore.edited_objs.copy():
-            obj = bpy.data.objects.get(obj_name)
+        for obj in IfcStore.edited_objs.copy():
             if not obj:
                 continue
-            representation = IfcStore.get_file().by_id(obj.data.BIMMeshProperties.ifc_definition_id)
-            if representation.RepresentationType == "Tessellation" or representation.RepresentationType == "Brep":
-                bpy.ops.bim.update_mesh_representation(obj=obj.name)
+            try:
+                if isinstance(obj, bpy.types.Material):
+                    bpy.ops.bim.update_style_colours(material=obj.name)
+                else:
+                    bpy.ops.bim.update_representation(obj=obj.name)
+            except ReferenceError:
+                pass  # The object is likely deleted
         IfcStore.edited_objs.clear()
 
     def sync_object_placement(self, obj):
         blender_matrix = np.matrix(obj.matrix_world)
-        ifc_matrix = ifcopenshell.util.placement.get_local_placement(
-            self.file.by_id(obj.BIMObjectProperties.ifc_definition_id).ObjectPlacement
-        )
+        element = self.file.by_id(obj.BIMObjectProperties.ifc_definition_id)
+        if not hasattr(element, "ObjectPlacement"):
+            return
+        ifc_matrix = ifcopenshell.util.placement.get_local_placement(element.ObjectPlacement)
         ifc_matrix[0][3] *= self.unit_scale
         ifc_matrix[1][3] *= self.unit_scale
         ifc_matrix[2][3] *= self.unit_scale
 
         props = bpy.context.scene.BIMGeoreferenceProperties
-        if props.has_blender_offset and props.blender_offset_type == "OBJECT_PLACEMENT":
+        if props.has_blender_offset and obj.BIMObjectProperties.blender_offset_type == "OBJECT_PLACEMENT":
             ifc_matrix = ifcopenshell.util.geolocation.global2local(
                 ifc_matrix,
                 float(props.blender_eastings) * self.unit_scale,
@@ -114,6 +120,48 @@ class IfcExporter:
         if not np.allclose(ifc_matrix, blender_matrix, atol=0.0001):
             bpy.ops.bim.edit_object_placement(obj=obj.name)
 
+    def sync_object_container(self, guid, obj):
+        element = self.file.by_id(obj.BIMObjectProperties.ifc_definition_id)
+        element_collection = bpy.data.collections.get(obj.name)
+
+        if self.file.schema == "IFC2X3":
+            if element.is_a("IfcProject"):
+                return
+        elif element.is_a("IfcContext"):
+            return
+
+        if (
+            (element.is_a("IfcElement") and element_collection)
+            or element.is_a("IfcSpatialStructureElement")
+            or element.is_a("IfcGrid")
+        ):
+            try:
+                parent_collection = [c for c in bpy.data.collections if c.children.get(element_collection.name)][0]
+            except:
+                return  # Out of the spatial tree
+        else:
+            parent_collection = obj.users_collection[0]
+
+
+        parent_obj = bpy.data.objects.get(parent_collection.name)
+        if not parent_obj or not parent_obj.BIMObjectProperties.ifc_definition_id:
+            return
+        parent = self.file.by_id(parent_obj.BIMObjectProperties.ifc_definition_id)
+
+        if parent.is_a("IfcSpatialStructureElement") and not element.is_a("IfcSpatialStructureElement"):
+            if parent != ifcopenshell.util.element.get_container(element):
+                bpy.ops.bim.assign_container(relating_structure=parent.id(), related_element=obj.name)
+        elif parent != ifcopenshell.util.element.get_aggregate(element):
+            bpy.ops.bim.assign_object(relating_object=parent_obj.name, related_object=obj.name)
+
+    def should_delete(self, obj):
+        try:
+            # This will throw an exception if the Blender object no longer exists
+            foo = obj.name
+            return False
+        except:
+            return True
+
     def get_application_name(self):
         return "BlenderBIM"
 

src/blenderbim/blenderbim/bim/handler.py

@@ -0,0 +1,290 @@
+import bpy
+import json
+import addon_utils
+import ifcopenshell.api.owner.settings
+from bpy.app.handlers import persistent
+from blenderbim.bim.ifc import IfcStore
+from blenderbim.bim.module.owner.prop import getPersons, getOrganisations
+from ifcopenshell.api.attribute.data import Data as AttributeData
+from ifcopenshell.api.material.data import Data as MaterialData
+from ifcopenshell.api.style.data import Data as StyleData
+from ifcopenshell.api.type.data import Data as TypeData
+
+
+global_subscription_owner = object()
+
+
+def mode_callback(obj, data):
+    if not bpy.context.scene.BIMProjectProperties.is_authoring:
+        return
+    objects = bpy.context.selected_objects
+    if bpy.context.active_object:
+        objects += [bpy.context.active_object]
+    for obj in objects:
+        if (
+            obj.mode != "EDIT"
+            or not obj.data
+            or not isinstance(obj.data, (bpy.types.Mesh, bpy.types.Curve, bpy.types.TextCurve))
+            or not obj.BIMObjectProperties.ifc_definition_id
+        ):
+            continue
+        if obj.data.BIMMeshProperties.ifc_definition_id:
+            representation = IfcStore.get_file().by_id(obj.data.BIMMeshProperties.ifc_definition_id)
+            if representation.RepresentationType in ["Tessellation", "Brep", "Annotation2D"]:
+                IfcStore.edited_objs.add(obj)
+        elif IfcStore.get_file().by_id(obj.BIMObjectProperties.ifc_definition_id).is_a("IfcGridAxis"):
+            IfcStore.edited_objs.add(obj)
+
+
+def name_callback(obj, data):
+    # TODO Do we still need this, now that we are monitoring the undo redo objects?
+    try:
+        obj.name
+    except:
+        return  # In case the object RNA is gone during an undo / redo operation
+    # Blender names are up to 63 UTF-8 bytes
+    if len(bytes(obj.name, "utf-8")) >= 63:
+        return
+
+    if isinstance(obj, bpy.types.Material):
+        if obj.BIMObjectProperties.ifc_definition_id:
+            IfcStore.get_file().by_id(obj.BIMObjectProperties.ifc_definition_id).Name = obj.name
+            AttributeData.load(IfcStore.get_file(), obj.BIMObjectProperties.ifc_definition_id)
+            MaterialData.load_materials()
+        if obj.BIMMaterialProperties.ifc_style_id:
+            IfcStore.get_file().by_id(obj.BIMMaterialProperties.ifc_style_id).Name = obj.name
+            StyleData.load(IfcStore.get_file(), obj.BIMMaterialProperties.ifc_style_id)
+        return
+
+    if not obj.BIMObjectProperties.ifc_definition_id or "/" not in obj.name:
+        return
+    element = IfcStore.get_file().by_id(obj.BIMObjectProperties.ifc_definition_id)
+    if not element.is_a("IfcRoot"):
+        return
+    if element.is_a("IfcSpatialStructureElement") or (hasattr(element, "IsDecomposedBy") and element.IsDecomposedBy):
+        collection = obj.users_collection[0]
+        collection.name = obj.name
+    if element.is_a("IfcGrid"):
+        axis_obj = IfcStore.get_element(element.UAxes[0].id())
+        axis_collection = axis_obj.users_collection[0]
+        grid_collection = None
+        for collection in bpy.data.collections:
+            if axis_collection.name in collection.children.keys():
+                grid_collection = collection
+                break
+        if grid_collection:
+            grid_collection.name = obj.name
+    if element.is_a("IfcTypeProduct"):
+        TypeData.purge()
+    element.Name = "/".join(obj.name.split("/")[1:])
+    AttributeData.load(IfcStore.get_file(), obj.BIMObjectProperties.ifc_definition_id)
+
+
+def color_callback(obj, data):
+    if obj.BIMMaterialProperties.ifc_style_id:
+        IfcStore.edited_objs.add(obj)
+
+
+def active_object_callback():
+    obj = bpy.context.active_object
+    for obj in bpy.context.selected_objects:
+        if not obj.BIMObjectProperties.ifc_definition_id:
+            continue
+        stored_obj = IfcStore.get_element(obj.BIMObjectProperties.ifc_definition_id)
+        if stored_obj and stored_obj != obj:
+            bpy.ops.bim.copy_class(obj=obj.name)
+
+
+def subscribe_to(object, data_path, callback):
+    try:
+        subscribe_to = object.path_resolve(data_path, False)
+    except:
+        return
+    bpy.msgbus.subscribe_rna(
+        key=subscribe_to,
+        owner=object,
+        args=(
+            object,
+            data_path,
+        ),
+        notify=callback,
+        options={
+            "PERSISTENT",
+        },
+    )
+
+
+def purge_module_data():
+    from blenderbim.bim import modules
+
+    for name, value in modules.items():
+        try:
+            getattr(getattr(getattr(ifcopenshell.api, name), "data"), "Data").purge()
+        except AttributeError:
+            pass
+
+        try:
+            getattr(value, "prop").purge()
+        except AttributeError:
+            pass
+
+
+@persistent
+def loadIfcStore(scene):
+    IfcStore.purge()
+    purge_module_data()
+    ifc_file = IfcStore.get_file()
+    if not ifc_file:
+        return
+    IfcStore.get_schema()
+    IfcStore.reload_linked_elements()
+
+
+@persistent
+def undo_pre(scene):
+    IfcStore.update_undo_redo_stack_objects()
+
+
+@persistent
+def undo_post(scene):
+    if IfcStore.last_transaction != bpy.context.scene.BIMProperties.last_transaction:
+        IfcStore.last_transaction = bpy.context.scene.BIMProperties.last_transaction
+        IfcStore.undo()
+        purge_module_data()
+    IfcStore.update_undo_redo_stack_objects()
+    IfcStore.reload_linked_elements(objects=[bpy.data.objects.get(o) for o in IfcStore.undo_redo_stack_objects])
+
+
+@persistent
+def redo_pre(scene):
+    IfcStore.update_undo_redo_stack_objects()
+
+
+@persistent
+def redo_post(scene):
+    if IfcStore.last_transaction != bpy.context.scene.BIMProperties.last_transaction:
+        IfcStore.last_transaction = bpy.context.scene.BIMProperties.last_transaction
+        IfcStore.redo()
+        purge_module_data()
+    IfcStore.update_undo_redo_stack_objects()
+    IfcStore.reload_linked_elements(objects=[bpy.data.objects.get(o) for o in IfcStore.undo_redo_stack_objects])
+
+
+@persistent
+def ensureIfcExported(scene):
+    if IfcStore.get_file() and not bpy.context.scene.BIMProperties.ifc_file:
+        bpy.ops.export_ifc.bim("INVOKE_DEFAULT")
+
+
+def get_application(ifc):
+    version = get_application_version()
+    for element in ifc.by_type("IfcApplication"):
+        if element.ApplicationIdentifier == "BlenderBIM" and element.Version == version:
+            return element
+    return ifcopenshell.api.run(
+        "owner.add_application",
+        ifc,
+        version=get_application_version(),
+        application_full_name="BlenderBIM Add-on",
+        application_identifier="BlenderBIM",
+    )
+
+
+def get_application_version():
+    return ".".join(
+        [
+            str(x)
+            for x in [
+                addon.bl_info.get("version", (-1, -1, -1))
+                for addon in addon_utils.modules()
+                if addon.bl_info["name"] == "BlenderBIM"
+            ][0]
+        ]
+    )
+
+
+@persistent
+def setDefaultProperties(scene):
+    global global_subscription_owner
+    active_object_key = bpy.types.LayerObjects, "active"
+    bpy.msgbus.subscribe_rna(
+        key=active_object_key, owner=global_subscription_owner, args=(), notify=active_object_callback
+    )
+    ifcopenshell.api.owner.settings.get_person = (
+        lambda ifc: ifc.by_id(int(bpy.context.scene.BIMOwnerProperties.user_person))
+        if getPersons(None, bpy.context) and bpy.context.scene.BIMOwnerProperties.user_person
+        else None
+    )
+    ifcopenshell.api.owner.settings.get_organisation = (
+        lambda ifc: ifc.by_id(int(bpy.context.scene.BIMOwnerProperties.user_organisation))
+        if getOrganisations(None, bpy.context) and bpy.context.scene.BIMOwnerProperties.user_organisation
+        else None
+    )
+    ifcopenshell.api.owner.settings.get_application = get_application
+    if len(bpy.context.scene.DocProperties.drawing_styles) == 0:
+        drawing_style = bpy.context.scene.DocProperties.drawing_styles.add()
+        drawing_style.name = "Technical"
+        drawing_style.render_type = "VIEWPORT"
+        drawing_style.raster_style = json.dumps(
+            {
+                "bpy.data.worlds[0].color": (1, 1, 1),
+                "bpy.context.scene.render.engine": "BLENDER_WORKBENCH",
+                "bpy.context.scene.render.film_transparent": False,
+                "bpy.context.scene.display.shading.show_object_outline": True,
+                "bpy.context.scene.display.shading.show_cavity": False,
+                "bpy.context.scene.display.shading.cavity_type": "BOTH",
+                "bpy.context.scene.display.shading.curvature_ridge_factor": 1,
+                "bpy.context.scene.display.shading.curvature_valley_factor": 1,
+                "bpy.context.scene.view_settings.view_transform": "Standard",
+                "bpy.context.scene.display.shading.light": "FLAT",
+                "bpy.context.scene.display.shading.color_type": "SINGLE",
+                "bpy.context.scene.display.shading.single_color": (1, 1, 1),
+                "bpy.context.scene.display.shading.show_shadows": False,
+                "bpy.context.scene.display.shading.shadow_intensity": 0.5,
+                "bpy.context.scene.display.light_direction": (0.5, 0.5, 0.5),
+                "bpy.context.scene.view_settings.use_curve_mapping": False,
+                "space.overlay.show_wireframes": True,
+                "space.overlay.wireframe_threshold": 0,
+                "space.overlay.show_floor": False,
+                "space.overlay.show_axis_x": False,
+                "space.overlay.show_axis_y": False,
+                "space.overlay.show_axis_z": False,
+                "space.overlay.show_object_origins": False,
+                "space.overlay.show_relationship_lines": False,
+            }
+        )
+        drawing_style = bpy.context.scene.DocProperties.drawing_styles.add()
+        drawing_style.name = "Shaded"
+        drawing_style.render_type = "VIEWPORT"
+        drawing_style.raster_style = json.dumps(
+            {
+                "bpy.data.worlds[0].color": (1, 1, 1),
+                "bpy.context.scene.render.engine": "BLENDER_WORKBENCH",
+                "bpy.context.scene.render.film_transparent": False,
+                "bpy.context.scene.display.shading.show_object_outline": True,
+                "bpy.context.scene.display.shading.show_cavity": True,
+                "bpy.context.scene.display.shading.cavity_type": "BOTH",
+                "bpy.context.scene.display.shading.curvature_ridge_factor": 1,
+                "bpy.context.scene.display.shading.curvature_valley_factor": 1,
+                "bpy.context.scene.view_settings.view_transform": "Standard",
+                "bpy.context.scene.display.shading.light": "STUDIO",
+                "bpy.context.scene.display.shading.color_type": "MATERIAL",
+                "bpy.context.scene.display.shading.single_color": (1, 1, 1),
+                "bpy.context.scene.display.shading.show_shadows": True,
+                "bpy.context.scene.display.shading.shadow_intensity": 0.5,
+                "bpy.context.scene.display.light_direction": (0.5, 0.5, 0.5),
+                "bpy.context.scene.view_settings.use_curve_mapping": False,
+                "space.overlay.show_wireframes": True,
+                "space.overlay.wireframe_threshold": 0,
+                "space.overlay.show_floor": False,
+                "space.overlay.show_axis_x": False,
+                "space.overlay.show_axis_y": False,
+                "space.overlay.show_axis_z": False,
+                "space.overlay.show_object_origins": False,
+                "space.overlay.show_relationship_lines": False,
+            }
+        )
+        drawing_style = bpy.context.scene.DocProperties.drawing_styles.add()
+        drawing_style.name = "Blender Default"
+        drawing_style.render_type = "DEFAULT"
+        bpy.ops.bim.save_drawing_style(index="2")

src/blenderbim/blenderbim/bim/helper.py

@@ -0,0 +1,84 @@
+import bpy
+import json
+import math
+import ifcopenshell
+import ifcopenshell.util.attribute
+from mathutils import geometry
+from mathutils import Vector
+from blenderbim.bim.ifc import IfcStore
+
+
+def draw_attributes(props, layout, copy_operator=None):
+    for attribute in props:
+        row = layout.row(align=True)
+        value = None
+        if attribute.data_type == "string":
+            row.prop(attribute, "string_value", text=attribute.name)
+            value = attribute.string_value
+        elif attribute.data_type == "boolean":
+            row.prop(attribute, "bool_value", text=attribute.name)
+            value = attribute.bool_value
+        elif attribute.data_type == "integer":
+            row.prop(attribute, "int_value", text=attribute.name)
+            value = attribute.int_value
+        elif attribute.data_type == "float":
+            row.prop(attribute, "float_value", text=attribute.name)
+            value = attribute.float_value
+        elif attribute.data_type == "enum":
+            row.prop(attribute, "enum_value", text=attribute.name)
+            value = attribute.enum_value
+        if attribute.is_optional:
+            row.prop(attribute, "is_null", icon="RADIOBUT_OFF" if attribute.is_null else "RADIOBUT_ON", text="")
+        if copy_operator:
+            op = row.operator(f"{copy_operator}", text="", icon="COPYDOWN")
+            op.data = json.dumps({"name": attribute.name, "value": value, "is_null": attribute.is_null})
+
+
+def import_attributes(ifc_class, props, data, callback=None):
+    for attribute in IfcStore.get_schema().declaration_by_name(ifc_class).all_attributes():
+        data_type = ifcopenshell.util.attribute.get_primitive_type(attribute)
+        if data_type == "entity" or (isinstance(data_type, tuple) and "entity" in ".".join(data_type)):
+            continue
+        new = props.add()
+        new.name = attribute.name()
+        new.is_null = data[attribute.name()] is None
+        new.is_optional = attribute.optional()
+        new.data_type = data_type if isinstance(data_type, str) else ""
+        is_handled_by_callback = callback(attribute.name(), new, data) if callback else None
+        if is_handled_by_callback:
+            pass  # Our job is done
+        elif is_handled_by_callback is False:
+            props.remove(len(props) - 1)
+        elif data_type == "string":
+            new.string_value = "" if new.is_null else data[attribute.name()]
+        elif data_type == "boolean":
+            new.bool_value = False if new.is_null else data[attribute.name()]
+        elif data_type == "integer":
+            new.int_value = 0 if new.is_null else data[attribute.name()]
+        elif data_type == "float":
+            new.float_value = 0.0 if new.is_null else data[attribute.name()]
+        elif data_type == "enum":
+            new.enum_items = json.dumps(ifcopenshell.util.attribute.get_enum_items(attribute))
+            if data[attribute.name()]:
+                new.enum_value = data[attribute.name()]
+
+
+def export_attributes(props, callback=None):
+    attributes = {}
+    for attribute in props:
+        is_handled_by_callback = callback(attributes, attribute) if callback else False
+        if attribute.is_null:
+            attributes[attribute.name] = None
+        elif is_handled_by_callback:
+            pass  # Our job is done
+        elif attribute.data_type == "string":
+            attributes[attribute.name] = attribute.string_value
+        elif attribute.data_type == "boolean":
+            attributes[attribute.name] = attribute.bool_value
+        elif attribute.data_type == "integer":
+            attributes[attribute.name] = attribute.int_value
+        elif attribute.data_type == "float":
+            attributes[attribute.name] = attribute.float_value
+        elif attribute.data_type == "enum":
+            attributes[attribute.name] = attribute.enum_value
+    return attributes

src/blenderbim/blenderbim/bim/ifc.py

@@ -0,0 +1,249 @@
+import bpy
+import uuid
+import ifcopenshell
+import blenderbim.bim.handler
+
+
+class IfcStore:
+    path = ""
+    file = None
+    schema = None
+    id_map = {}
+    guid_map = {}
+    edited_objs = set()
+    pset_template_path = ""
+    pset_template_file = None
+    library_path = ""
+    library_file = None
+    element_listeners = set()
+    undo_redo_stack_objects = set()
+    current_transaction = ""
+    last_transaction = ""
+    history = []
+    future = []
+
+    @staticmethod
+    def purge():
+        IfcStore.path = ""
+        IfcStore.file = None
+        IfcStore.schema = None
+        IfcStore.id_map = {}
+        IfcStore.guid_map = {}
+        IfcStore.edited_objs = set()
+        IfcStore.pset_template_path = ""
+        IfcStore.pset_template_file = None
+        IfcStore.library_path = ""
+        IfcStore.library_file = None
+
+    @staticmethod
+    def get_file():
+        if IfcStore.file is None:
+            IfcStore.path = bpy.context.scene.BIMProperties.ifc_file
+            if IfcStore.path:
+                try:
+                    IfcStore.file = ifcopenshell.open(IfcStore.path)
+                except:
+                    IfcStore.file
+        return IfcStore.file
+
+    @staticmethod
+    def get_schema():
+        if IfcStore.file is None:
+            return
+        elif IfcStore.schema is None:
+            IfcStore.schema = ifcopenshell.ifcopenshell_wrapper.schema_by_name(IfcStore.file.schema)
+        return IfcStore.schema
+
+    @staticmethod
+    def get_element(id_or_guid):
+        if isinstance(id_or_guid, int):
+            map_object = IfcStore.id_map
+        else:
+            map_object = IfcStore.guid_map
+        try:
+            obj = map_object[id_or_guid]
+            obj.name  # In case the object has been deleted, this triggers an exception
+        except:
+            return
+        return obj
+
+    @staticmethod
+    def add_element_listener(callback):
+        IfcStore.element_listeners.add(callback)
+
+    @staticmethod
+    def update_undo_redo_stack_objects():
+        """Keeps track of selected object names, typically during undo and redo
+
+        When any Blender object is stored outside a Blender PointerProperty, such as
+        in a regular Python list, there is the likely probability that the object
+        will be invalidated when undo or redo occurs. Object invalidation seems to
+        only occur for selected objects either pre/post undo/redo event, including
+        selected objects for consecutive undo/redos.
+
+        So if I first select o1, then o2, then o3, then press undo, o3 will be
+        invalidated. If instead I press undo twice, o3 and o2 will be invalidated.
+        """
+        if bpy.context.active_object:
+            objects = set([o.name for o in bpy.context.selected_objects + [bpy.context.active_object]])
+        else:
+            objects = set([o.name for o in bpy.context.selected_objects])
+        IfcStore.undo_redo_stack_objects |= objects
+
+    @staticmethod
+    def reload_linked_elements(objects=None):
+        file = IfcStore.get_file()
+        if not file:
+            return
+        if objects is None:
+            objects = bpy.data.objects
+
+        for obj in objects:
+            if not obj:
+                continue
+            if not obj.BIMObjectProperties.ifc_definition_id:
+                continue
+            element = file.by_id(obj.BIMObjectProperties.ifc_definition_id)
+            data = {"id": element.id(), "obj": obj.name}
+            if hasattr(element, "GlobalId"):
+                data["guid"] = element.GlobalId
+            IfcStore.commit_link_element(data)
+
+    @staticmethod
+    def link_element(element, obj):
+        IfcStore.id_map[element.id()] = obj
+        if hasattr(element, "GlobalId"):
+            IfcStore.guid_map[element.GlobalId] = obj
+
+        if element.is_a("IfcSurfaceStyle"):
+            obj.BIMMaterialProperties.ifc_style_id = element.id()
+        else:
+            obj.BIMObjectProperties.ifc_definition_id = element.id()
+
+        blenderbim.bim.handler.subscribe_to(obj, "name", blenderbim.bim.handler.name_callback)
+
+        if isinstance(obj, bpy.types.Material):
+            blenderbim.bim.handler.subscribe_to(obj, "diffuse_color", blenderbim.bim.handler.color_callback)
+        elif isinstance(obj, bpy.types.Object):
+            blenderbim.bim.handler.subscribe_to(obj, "mode", blenderbim.bim.handler.mode_callback)
+
+        for listener in IfcStore.element_listeners:
+            listener(element, obj)
+
+        if IfcStore.history:
+            data = {"id": element.id(), "guid": getattr(element, "GlobalId", None), "obj": obj.name}
+            IfcStore.history[-1]["operations"].append(
+                {"rollback": IfcStore.rollback_link_element, "commit": IfcStore.commit_link_element, "data": data}
+            )
+
+    @staticmethod
+    def rollback_link_element(data):
+        del IfcStore.id_map[data["id"]]
+        if data["guid"]:
+            del IfcStore.guid_map[data["guid"]]
+
+    @staticmethod
+    def commit_link_element(data):
+        obj = bpy.data.objects.get(data["obj"])
+        IfcStore.id_map[data["id"]] = obj
+        if data["guid"]:
+            IfcStore.guid_map[data["guid"]] = obj
+        blenderbim.bim.handler.subscribe_to(obj, "mode", blenderbim.bim.handler.mode_callback)
+        blenderbim.bim.handler.subscribe_to(obj, "name", blenderbim.bim.handler.name_callback)
+        if isinstance(obj, bpy.types.Material):
+            blenderbim.bim.handler.subscribe_to(obj, "diffuse_color", blenderbim.bim.handler.color_callback)
+        # TODO Listeners are not re-registered. Does this cause nasty problems to debug later on?
+        # TODO We're handling id_map and guid_map, but what about edited_objs? This might cause big problems.
+
+    @staticmethod
+    def unlink_element(element=None, obj=None):
+        if element is None:
+            try:
+                element = IfcStore.get_file().by_id(obj.BIMObjectProperties.ifc_definition_id)
+            except:
+                pass
+
+        try:
+            if element:
+                del IfcStore.id_map[element.id()]
+            else:
+                del IfcStore.id_map[obj.BIMObjectProperties.ifc_definition_id]
+        except:
+            pass
+
+        try:
+            if element and hasattr(element, "GlobalId"):
+                del IfcStore.guid_map[element.GlobalId]
+        except:
+            pass
+
+        if obj:
+            obj.BIMObjectProperties.ifc_definition_id = 0
+
+    @staticmethod
+    def execute_ifc_operator(operator, context):
+        is_top_level_operator = not bool(IfcStore.current_transaction)
+
+        if is_top_level_operator:
+            IfcStore.begin_transaction(operator)
+            IfcStore.get_file().begin_transaction()
+            # This empty transaction ensures that each operator has at least one transaction
+            IfcStore.add_transaction_operation(operator, rollback=lambda data: True, commit=lambda data: True)
+        else:
+            operator.transaction_key = IfcStore.current_transaction
+
+        result = getattr(operator, "_execute")(context)
+
+        if is_top_level_operator:
+            IfcStore.get_file().end_transaction()
+            IfcStore.add_transaction_operation(
+                operator, rollback=lambda d: IfcStore.get_file().undo(), commit=lambda d: IfcStore.get_file().redo()
+            )
+            IfcStore.end_transaction(operator)
+
+        return result
+
+    @staticmethod
+    def begin_transaction(operator):
+        IfcStore.undo_redo_stack_objects = set()
+        IfcStore.current_transaction = str(uuid.uuid4())
+        operator.transaction_key = IfcStore.current_transaction
+
+    @staticmethod
+    def end_transaction(operator):
+        IfcStore.current_transaction = ""
+        operator.transaction_key = ""
+
+    @staticmethod
+    def add_transaction_operation(operator, rollback=None, commit=None):
+        key = getattr(operator, "transaction_key", None)
+        data = getattr(operator, "transaction_data", None)
+        bpy.context.scene.BIMProperties.last_transaction = key
+        IfcStore.last_transaction = key
+        rollback = rollback or getattr(operator, "rollback", lambda data: True)
+        commit = commit or getattr(operator, "commit", lambda data: True)
+        if IfcStore.history and IfcStore.history[-1]["key"] == key:
+            IfcStore.history[-1]["operations"].append({"rollback": rollback, "commit": commit, "data": data})
+        else:
+            IfcStore.history.append(
+                {"key": key, "operations": [{"rollback": rollback, "commit": commit, "data": data}]}
+            )
+        IfcStore.future = []
+
+    @staticmethod
+    def undo():
+        if not IfcStore.history:
+            return
+        event = IfcStore.history.pop()
+        for transaction in event["operations"][::-1]:
+            transaction["rollback"](transaction["data"])
+        IfcStore.future.append(event)
+
+    @staticmethod
+    def redo():
+        if not IfcStore.future:
+            return
+        event = IfcStore.future.pop()
+        for transaction in event["operations"]:
+            transaction["commit"](transaction["data"])
+        IfcStore.history.append(event)

src/blenderbim/blenderbim/bim/module/aggregate/operator.py

@@ -0,0 +1,104 @@
+import bpy
+import ifcopenshell.api
+from blenderbim.bim.ifc import IfcStore
+from ifcopenshell.api.aggregate.data import Data
+
+
+class AssignObject(bpy.types.Operator):
+    bl_idname = "bim.assign_object"
+    bl_label = "Assign Object"
+    bl_options = {"REGISTER", "UNDO"}
+    relating_object: bpy.props.StringProperty()
+    related_object: bpy.props.StringProperty()
+
+    def execute(self, context):
+        return IfcStore.execute_ifc_operator(self, context)
+
+    def _execute(self, context):
+        self.file = IfcStore.get_file()
+        related_objects = (
+            [bpy.data.objects.get(self.related_object)] if self.related_object else context.selected_objects
+        )
+        relating_object = bpy.data.objects.get(self.relating_object)
+        if not relating_object or not relating_object.BIMObjectProperties.ifc_definition_id:
+            return {"FINISHED"}
+        for related_object in related_objects:
+            oprops = related_object.BIMObjectProperties
+            product = self.file.by_id(oprops.ifc_definition_id)
+            ifcopenshell.api.run(
+                "aggregate.assign_object",
+                self.file,
+                **{
+                    "product": product,
+                    "relating_object": self.file.by_id(relating_object.BIMObjectProperties.ifc_definition_id),
+                },
+            )
+            bpy.ops.bim.edit_object_placement(obj=related_object.name)
+            Data.load(IfcStore.get_file(), oprops.ifc_definition_id)
+            bpy.ops.bim.disable_editing_aggregate(obj=related_object.name)
+
+            spatial_collection = bpy.data.collections.get(related_object.name)
+            relating_collection = bpy.data.collections.get(relating_object.name)
+            if spatial_collection:
+                self.remove_collection(context.scene.collection, spatial_collection)
+                for collection in bpy.data.collections:
+                    if collection == relating_collection:
+                        if not collection.children.get(spatial_collection.name):
+                            collection.children.link(spatial_collection)
+                        continue
+                    self.remove_collection(collection, spatial_collection)
+            else:
+                for collection in related_object.users_collection:
+                    if collection.name.startswith("Ifc"):
+                        collection.objects.unlink(related_object)
+                relating_collection.objects.link(related_object)
+        return {"FINISHED"}
+
+    def remove_collection(self, parent, child):
+        try:
+            parent.children.unlink(child)
+        except:
+            pass
+
+
+class EnableEditingAggregate(bpy.types.Operator):
+    bl_idname = "bim.enable_editing_aggregate"
+    bl_label = "Enable Editing Aggregate"
+    bl_options = {"REGISTER", "UNDO"}
+
+    def execute(self, context):
+        context.active_object.BIMObjectProperties.relating_object = None
+        context.active_object.BIMObjectProperties.is_editing_aggregate = True
+        return {"FINISHED"}
+
+
+class DisableEditingAggregate(bpy.types.Operator):
+    bl_idname = "bim.disable_editing_aggregate"
+    bl_label = "Disable Editing Aggregate"
+    obj: bpy.props.StringProperty()
+    bl_options = {"REGISTER", "UNDO"}
+
+    def execute(self, context):
+        obj = bpy.data.objects.get(self.obj) if self.obj else context.active_object
+        obj.BIMObjectProperties.is_editing_aggregate = False
+        return {"FINISHED"}
+
+
+class AddAggregate(bpy.types.Operator):
+    bl_idname = "bim.add_aggregate"
+    bl_label = "Add Aggregate"
+    bl_options = {"REGISTER", "UNDO"}
+    obj: bpy.props.StringProperty()
+
+    def execute(self, context):
+        return IfcStore.execute_ifc_operator(self, context)
+
+    def _execute(self, context):
+        obj = bpy.data.objects.get(self.obj) if self.obj else context.active_object
+        aggregate_collection = bpy.data.collections.new("IfcElementAssembly/Assembly")
+        context.scene.collection.children.link(aggregate_collection)
+        aggregate = bpy.data.objects.new("Assembly", None)
+        aggregate_collection.objects.link(aggregate)
+        bpy.ops.bim.assign_class(obj=aggregate.name, ifc_class="IfcElementAssembly")
+        bpy.ops.bim.assign_object(related_object=obj.name, relating_object=aggregate.name)
+        return {"FINISHED"}

src/blenderbim/blenderbim/bim/module/aggregate/ui.py

@@ -1,5 +1,5 @@
 from bpy.types import Panel
-from blenderbim.bim.module.aggregate.data import Data
+from ifcopenshell.api.aggregate.data import Data
 from blenderbim.bim.ifc import IfcStore
 
 
@@ -16,10 +16,12 @@ class BIM_PT_aggregate(Panel):
         props = context.active_object.BIMObjectProperties
         if not props.ifc_definition_id:
             return False
+        if not IfcStore.get_element(props.ifc_definition_id):
+            return False
         if not IfcStore.get_file().by_id(props.ifc_definition_id).is_a("IfcObjectDefinition"):
             return False
         if props.ifc_definition_id not in Data.products:
-            Data.load(props.ifc_definition_id)
+            Data.load(IfcStore.get_file(), props.ifc_definition_id)
         if not Data.products[props.ifc_definition_id]:
             return False
         return True
@@ -29,12 +31,13 @@ class BIM_PT_aggregate(Panel):
         if not props.ifc_definition_id:
             return
         if props.ifc_definition_id not in Data.products:
-            Data.load(props.ifc_definition_id)
+            Data.load(IfcStore.get_file(), props.ifc_definition_id)
 
         if props.is_editing_aggregate:
             row = self.layout.row(align=True)
             row.prop(props, "relating_object", text="")
-            row.operator("bim.assign_object", icon="CHECKMARK", text="")
+            if props.relating_object:
+                row.operator("bim.assign_object", icon="CHECKMARK", text="").relating_object = props.relating_object.name
             row.operator("bim.disable_editing_aggregate", icon="X", text="")
         else:
             row = self.layout.row(align=True)

src/blenderbim/blenderbim/bim/module/attribute/operator.py

@@ -1,14 +1,15 @@
 import bpy
 import json
 import ifcopenshell
-import blenderbim.bim.module.attribute.edit_attributes as edit_attributes
+import ifcopenshell.api
 from blenderbim.bim.ifc import IfcStore
-from blenderbim.bim.module.attribute.data import Data
+from ifcopenshell.api.attribute.data import Data
 
 
 class EnableEditingAttributes(bpy.types.Operator):
     bl_idname = "bim.enable_editing_attributes"
     bl_label = "Enable Editing Attributes"
+    bl_options = {"REGISTER", "UNDO"}
     obj: bpy.props.StringProperty()
     obj_type: bpy.props.StringProperty()
 
@@ -24,7 +25,7 @@ class EnableEditingAttributes(bpy.types.Operator):
             props.attributes.remove(0)
         for attribute in Data.products[oprops.ifc_definition_id]:
             new = props.attributes.add()
-            if attribute["type"] == "entity":
+            if attribute["type"] == "entity" or (attribute["type"] == "list" and attribute["list_type"] == "entity"):
                 continue
             new.name = attribute["name"]
             new.is_null = attribute["is_null"]
@@ -33,7 +34,7 @@ class EnableEditingAttributes(bpy.types.Operator):
             elif attribute["type"] == "integer":
                 new.int_value = attribute["value"] or 0
             elif attribute["type"] == "float":
-                new.float_value = attribute["value"] or 0.
+                new.float_value = attribute["value"] or 0.0
             elif attribute["type"] == "enum":
                 new.enum_items = json.dumps(attribute["enum_items"])
                 if attribute["value"]:
@@ -45,6 +46,7 @@ class EnableEditingAttributes(bpy.types.Operator):
 class DisableEditingAttributes(bpy.types.Operator):
     bl_idname = "bim.disable_editing_attributes"
     bl_label = "Disable Editing Attributes"
+    bl_options = {"REGISTER", "UNDO"}
     obj: bpy.props.StringProperty()
     obj_type: bpy.props.StringProperty()
 
@@ -61,10 +63,14 @@ class DisableEditingAttributes(bpy.types.Operator):
 class EditAttributes(bpy.types.Operator):
     bl_idname = "bim.edit_attributes"
     bl_label = "Edit Attributes"
+    bl_options = {"REGISTER", "UNDO"}
     obj: bpy.props.StringProperty()
     obj_type: bpy.props.StringProperty()
 
     def execute(self, context):
+        return IfcStore.execute_ifc_operator(self, context)
+
+    def _execute(self, context):
         self.file = IfcStore.get_file()
         if self.obj_type == "Object":
             obj = bpy.data.objects.get(self.obj)
@@ -95,17 +101,10 @@ class EditAttributes(bpy.types.Operator):
             elif attribute["type"] == "enum":
                 attributes[attribute["name"]] = blender_attribute.enum_value
         product = self.file.by_id(oprops.ifc_definition_id)
-        edit_attributes.Usecase(self.file, {
-            "product": product,
-            "attributes": attributes
-        }).execute()
-        if "Name" in attributes:
-            new_name = "{}/{}".format(product.is_a(), product.Name or "Unnamed")
-            collection = bpy.data.collections.get(obj.name)
-            if collection:
-                collection.name = new_name
-            obj.name = new_name
-        Data.load(oprops.ifc_definition_id)
+        ifcopenshell.api.run(
+            "attribute.edit_attributes", self.file, **{"product": product, "attributes": attributes}
+        )
+        Data.load(IfcStore.get_file(), oprops.ifc_definition_id)
         bpy.ops.bim.disable_editing_attributes(obj=obj.name, obj_type=self.obj_type)
         return {"FINISHED"}
 
@@ -113,13 +112,14 @@ class EditAttributes(bpy.types.Operator):
 class GenerateGlobalId(bpy.types.Operator):
     bl_idname = "bim.generate_global_id"
     bl_label = "Regenerate GlobalId"
+    bl_options = {"REGISTER", "UNDO"}
 
     def execute(self, context):
-        index = bpy.context.active_object.BIMAttributeProperties.attributes.find("GlobalId")
+        index = context.active_object.BIMAttributeProperties.attributes.find("GlobalId")
         if index >= 0:
-            global_id = bpy.context.active_object.BIMAttributeProperties.attributes[index]
+            global_id = context.active_object.BIMAttributeProperties.attributes[index]
         else:
-            global_id = bpy.context.active_object.BIMAttributeProperties.attributes.add()
+            global_id = context.active_object.BIMAttributeProperties.attributes.add()
         global_id.name = "GlobalId"
         global_id.data_type = "string"
         global_id.string_value = ifcopenshell.guid.new()

src/blenderbim/blenderbim/bim/module/attribute/prop.py

@@ -1,6 +1,4 @@
 import bpy
-import blenderbim.bim.schema # refactor
-from blenderbim.bim.module.material.data import Data
 from blenderbim.bim.ifc import IfcStore
 from blenderbim.bim.prop import StrProperty, Attribute
 from bpy.types import PropertyGroup

src/blenderbim/blenderbim/bim/module/attribute/ui.py

@@ -1,5 +1,6 @@
 from bpy.types import Panel
-from blenderbim.bim.module.attribute.data import Data
+from blenderbim.bim.ifc import IfcStore
+from ifcopenshell.api.attribute.data import Data
 
 
 def draw_ui(context, layout, obj_type):
@@ -7,14 +8,14 @@ def draw_ui(context, layout, obj_type):
     oprops = obj.BIMObjectProperties
     props = obj.BIMAttributeProperties
     if oprops.ifc_definition_id not in Data.products:
-        Data.load(oprops.ifc_definition_id)
+        Data.load(IfcStore.get_file(), oprops.ifc_definition_id)
 
     if props.is_editing_attributes:
         row = layout.row(align=True)
         op = row.operator("bim.edit_attributes", icon="CHECKMARK", text="Save Attributes")
         op.obj_type = obj_type
         op.obj = obj.name
-        op = row.operator("bim.disable_editing_attributes", icon="X", text="")
+        op = row.operator("bim.disable_editing_attributes", icon="CANCEL", text="")
         op.obj_type = obj_type
         op.obj = obj.name
 
@@ -41,10 +42,6 @@ def draw_ui(context, layout, obj_type):
                     icon="RADIOBUT_OFF" if blender_attribute.is_null else "RADIOBUT_ON",
                     text="",
                 )
-            # TODO: reimplement, see #1222
-            # op = row.operator("bim.copy_attribute_to_selection", icon="COPYDOWN", text="")
-            # op.attribute_name = attribute.name
-            # op.attribute_value = attribute.string_value
     else:
         row = layout.row()
         op = row.operator("bim.enable_editing_attributes", icon="GREASEPENCIL", text="Edit")
@@ -77,6 +74,8 @@ class BIM_PT_object_attributes(Panel):
 
     @classmethod
     def poll(cls, context):
+        if not IfcStore.get_element(context.active_object.BIMObjectProperties.ifc_definition_id):
+            return False
         return bool(context.active_object.BIMObjectProperties.ifc_definition_id)
 
     def draw(self, context):
@@ -84,7 +83,7 @@ class BIM_PT_object_attributes(Panel):
 
 
 class BIM_PT_material_attributes(Panel):
-    bl_label = "IFC Attributes"
+    bl_label = "IFC Material Attributes"
     bl_idname = "BIM_PT_material_attributes"
     bl_space_type = "PROPERTIES"
     bl_region_type = "WINDOW"

src/blenderbim/blenderbim/bim/module/augin/operator.py

@@ -13,9 +13,10 @@ import addon_utils
 class AuginLogin(bpy.types.Operator):
     bl_idname = "bim.augin_login"
     bl_label = "Login to Augin"
+    bl_options = {"REGISTER", "UNDO"}
 
     def execute(self, context):
-        props = bpy.context.scene.AuginProperties
+        props = context.scene.AuginProperties
 
         url = "https://server.auge.pro.br/API/v3/augin_rest.php/user_login"
         payload = {"email": props.username, "password": props.password}
@@ -32,9 +33,10 @@ class AuginLogin(bpy.types.Operator):
 class AuginReset(bpy.types.Operator):
     bl_idname = "bim.augin_reset"
     bl_label = "Upload Another Project"
+    bl_options = {"REGISTER", "UNDO"}
 
     def execute(self, context):
-        props = bpy.context.scene.AuginProperties
+        props = context.scene.AuginProperties
         props.is_success = False
         return {"FINISHED"}
 
@@ -42,11 +44,12 @@ class AuginReset(bpy.types.Operator):
 class AuginCreateNewModel(bpy.types.Operator):
     bl_idname = "bim.augin_create_new_model"
     bl_label = "Create New Augin Model"
+    bl_options = {"REGISTER", "UNDO"}
 
     def execute(self, context):
         import boto3
         from botocore.config import Config
-        props = bpy.context.scene.AuginProperties
+        props = context.scene.AuginProperties
 
         # Create project
         url = "https://server.auge.pro.br/API/v3/augin_rest.php/new_model"
@@ -110,7 +113,7 @@ class AuginCreateNewModel(bpy.types.Operator):
         context.scene.render.image_settings.file_format = old_file_format
         context.scene.render.filepath = old_filepath
 
-        client.upload_file(bpy.context.scene.BIMProperties.ifc_file, result["s3_bucket"], result["model_path"])
+        client.upload_file(context.scene.BIMProperties.ifc_file, result["s3_bucket"], result["model_path"])
         client.upload_file(thumb_path, result["s3_bucket"], result["thumb_path"])
 
 
@@ -118,8 +121,8 @@ class AuginCreateNewModel(bpy.types.Operator):
         url = "https://server.auge.pro.br/API/v3/augin_rest.php/files_uploaded"
         payload = {
             "user_token": props.token,
-            "ifc_filesize": os.path.getsize(bpy.context.scene.BIMProperties.ifc_file),
-            "model_filesize": os.path.getsize(bpy.context.scene.BIMProperties.ifc_file),
+            "ifc_filesize": os.path.getsize(context.scene.BIMProperties.ifc_file),
+            "model_filesize": os.path.getsize(context.scene.BIMProperties.ifc_file),
             "thumb_filesize": os.path.getsize(thumb_path),
             "model_upload_path": result["model_path"],
             "thumb_upload_path": result["thumb_path"],

src/blenderbim/blenderbim/bim/module/augin/ui.py

@@ -28,7 +28,7 @@ class BIM_PT_augin(bpy.types.Panel):
         row = layout.row()
         row.label(text="Logged in as " + props.username)
 
-        if not bpy.context.scene.BIMProperties.ifc_file:
+        if not context.scene.BIMProperties.ifc_file:
             row = layout.row()
             row.label(text="No IFC Found")
             return

src/blenderbim/blenderbim/bim/module/bcf/bcfstore.py

@@ -1,5 +1,5 @@
 import bcf
-import bcf.bcfxml
+import bcf.v2.bcfxml
 
 class BcfStore:
     bcfxml = None
@@ -7,5 +7,5 @@ class BcfStore:
     @staticmethod
     def get_bcfxml():
         if not BcfStore.bcfxml:
-            BcfStore.bcfxml = bcf.bcfxml.BcfXml()
+            BcfStore.bcfxml = bcf.v2.bcfxml.BcfXml()
         return BcfStore.bcfxml

src/blenderbim/blenderbim/bim/module/bcf/operator.py

@@ -1,6 +1,8 @@
 import os
 import bpy
 import bcf
+import bcf.bcfxml
+import bcf.v2.data
 from . import bcfstore
 from blenderbim.bim.ifc import IfcStore
 from math import radians, degrees, atan, tan, cos, sin
@@ -9,29 +11,33 @@ from mathutils import Vector, Matrix, Euler, geometry
 class NewBcfProject(bpy.types.Operator):
     bl_idname = "bim.new_bcf_project"
     bl_label = "New BCF Project"
+    bl_options = {"REGISTER", "UNDO"}
 
     def execute(self, context):
-        bpy.context.scene.BCFProperties.is_loaded = False
+        context.scene.BCFProperties.is_loaded = False
         bcfxml = bcfstore.BcfStore.get_bcfxml()
         bcfxml.new_project()
         bpy.ops.bim.load_bcf_project()
-        bpy.context.scene.BCFProperties.is_loaded = True
+        context.scene.BCFProperties.is_loaded = True
         return {"FINISHED"}
 
 
 class LoadBcfProject(bpy.types.Operator):
     bl_idname = "bim.load_bcf_project"
     bl_label = "Load BCF Project"
+    bl_options = {"REGISTER", "UNDO"}
     filepath: bpy.props.StringProperty(subtype="FILE_PATH")
+    filter_glob: bpy.props.StringProperty(default="*.bcf;*.bcfzip", options={"HIDDEN"})
 
     def execute(self, context):
-        bpy.context.scene.BCFProperties.is_loaded = False
-        bcfxml = bcfstore.BcfStore.get_bcfxml()
+        context.scene.BCFProperties.is_loaded = False
         if self.filepath:
-            bcfxml.get_project(self.filepath)
-        bpy.context.scene.BCFProperties.name = bcfxml.project.name
+            bcfstore.BcfStore.bcfxml = bcf.bcfxml.load(self.filepath)
+        bcfxml = bcfstore.BcfStore.get_bcfxml()
+        bcfxml.get_project()
+        context.scene.BCFProperties.name = bcfxml.project.name
         bpy.ops.bim.load_bcf_topics()
-        bpy.context.scene.BCFProperties.is_loaded = True
+        context.scene.BCFProperties.is_loaded = True
         return {"FINISHED"}
 
     def invoke(self, context, event):
@@ -42,15 +48,16 @@ class LoadBcfProject(bpy.types.Operator):
 class LoadBcfTopics(bpy.types.Operator):
     bl_idname = "bim.load_bcf_topics"
     bl_label = "Load BCF Topics"
+    bl_options = {"REGISTER", "UNDO"}
 
     def execute(self, context):
         bcfxml = bcfstore.BcfStore.get_bcfxml()
         bcfxml.get_topics()
-        while len(bpy.context.scene.BCFProperties.topics) > 0:
-            bpy.context.scene.BCFProperties.topics.remove(0)
+        while len(context.scene.BCFProperties.topics) > 0:
+            context.scene.BCFProperties.topics.remove(0)
         index = 0
         for topic_guid in bcfxml.topics.keys():
-            new = bpy.context.scene.BCFProperties.topics.add()
+            new = context.scene.BCFProperties.topics.add()
             bpy.ops.bim.load_bcf_topic(topic_guid = topic_guid, topic_index = index)
             index += 1
         return {"FINISHED"}
@@ -59,13 +66,14 @@ class LoadBcfTopics(bpy.types.Operator):
 class LoadBcfTopic(bpy.types.Operator):
     bl_idname = "bim.load_bcf_topic"
     bl_label = "Load BCF Topics"
+    bl_options = {"REGISTER", "UNDO"}
     topic_guid: bpy.props.StringProperty()
     topic_index: bpy.props.IntProperty()
 
     def execute(self, context):
         bcfxml = bcfstore.BcfStore.get_bcfxml()
         topic = bcfxml.get_topic(self.topic_guid)
-        new = bpy.context.scene.BCFProperties.topics[self.topic_index]
+        new = context.scene.BCFProperties.topics[self.topic_index]
         data_map = {
             "name": topic.guid,
             "title": topic.title,
@@ -129,12 +137,13 @@ class LoadBcfTopic(bpy.types.Operator):
 class LoadBcfComments(bpy.types.Operator):
     bl_idname = "bim.load_bcf_comments"
     bl_label = "Load BCF Comments"
+    bl_options = {"REGISTER", "UNDO"}
     topic_guid: bpy.props.StringProperty()
 
     def execute(self, context):
         bcfxml = bcfstore.BcfStore.get_bcfxml()
         bcfxml.get_comments(self.topic_guid)
-        blender_topic = bpy.context.scene.BCFProperties.topics.get(self.topic_guid)
+        blender_topic = context.scene.BCFProperties.topics.get(self.topic_guid)
         while len(blender_topic.comments) > 0:
             blender_topic.comments.remove(0)
         for comment in bcfxml.topics[self.topic_guid].comments.values():
@@ -157,10 +166,11 @@ class LoadBcfComments(bpy.types.Operator):
 class EditBcfProjectName(bpy.types.Operator):
     bl_idname = "bim.edit_bcf_project_name"
     bl_label = "Edit BCF Project Name"
+    bl_options = {"REGISTER", "UNDO"}
 
     def execute(self, context):
         bcfxml = bcfstore.BcfStore.get_bcfxml()
-        bcfxml.project.name = bpy.context.scene.BCFProperties.name
+        bcfxml.project.name = context.scene.BCFProperties.name
         bcfxml.edit_project()
         return {"FINISHED"}
 
@@ -168,19 +178,21 @@ class EditBcfProjectName(bpy.types.Operator):
 class EditBcfAuthor(bpy.types.Operator):
     bl_idname = "bim.edit_bcf_author"
     bl_label = "Edit BCF Author"
+    bl_options = {"REGISTER", "UNDO"}
 
     def execute(self, context):
         bcfxml = bcfstore.BcfStore.get_bcfxml()
-        bcfxml.author = bpy.context.scene.BCFProperties.author
+        bcfxml.author = context.scene.BCFProperties.author
         return {"FINISHED"}
 
 
 class EditBcfTopicName(bpy.types.Operator):
     bl_idname = "bim.edit_bcf_topic_name"
     bl_label = "Edit BCF Topic Name"
+    bl_options = {"REGISTER", "UNDO"}
 
     def execute(self, context):
-        props = bpy.context.scene.BCFProperties
+        props = context.scene.BCFProperties
         blender_topic = props.topics[props.active_topic_index]
         bcfxml = bcfstore.BcfStore.get_bcfxml()
         topic = bcfxml.topics[blender_topic.name]
@@ -192,9 +204,10 @@ class EditBcfTopicName(bpy.types.Operator):
 class EditBcfTopic(bpy.types.Operator):
     bl_idname = "bim.edit_bcf_topic"
     bl_label = "Edit BCF Topic"
+    bl_options = {"REGISTER", "UNDO"}
 
     def execute(self, context):
-        props = bpy.context.scene.BCFProperties
+        props = context.scene.BCFProperties
         blender_topic = props.topics[props.active_topic_index]
         bcfxml = bcfstore.BcfStore.get_bcfxml()
 
@@ -216,6 +229,7 @@ class EditBcfTopic(bpy.types.Operator):
 class SaveBcfProject(bpy.types.Operator):
     bl_idname = "bim.save_bcf_project"
     bl_label = "Save BCF Project"
+    bl_options = {"REGISTER", "UNDO"}
     filepath: bpy.props.StringProperty(subtype="FILE_PATH")
 
     def execute(self, context):
@@ -231,11 +245,12 @@ class SaveBcfProject(bpy.types.Operator):
 class AddBcfTopic(bpy.types.Operator):
     bl_idname = "bim.add_bcf_topic"
     bl_label = "Add BCF Topic"
+    bl_options = {"REGISTER", "UNDO"}
 
     def execute(self, context):
         bcfxml = bcfstore.BcfStore.get_bcfxml()
         bcfxml.add_topic()
-        new = bpy.context.scene.BCFProperties.topics.add()
+        new = context.scene.BCFProperties.topics.add()
         new.name = "New Topic"
         bpy.ops.bim.load_bcf_topics()
         return {"FINISHED"}
@@ -244,13 +259,14 @@ class AddBcfTopic(bpy.types.Operator):
 class AddBcfBimSnippet(bpy.types.Operator):
     bl_idname = "bim.add_bcf_bim_snippet"
     bl_label = "Add BCF BIM Snippet"
+    bl_options = {"REGISTER", "UNDO"}
 
     def execute(self, context):
         bcfxml = bcfstore.BcfStore.get_bcfxml()
-        props = bpy.context.scene.BCFProperties
+        props = context.scene.BCFProperties
         blender_topic = props.topics[props.active_topic_index]
         topic = bcfxml.topics[blender_topic.name]
-        bim_snippet = bcf.data.BimSnippet()
+        bim_snippet = bcf.v2.data.BimSnippet()
         bim_snippet.reference = blender_topic.bim_snippet_reference
         bim_snippet.reference_schema = blender_topic.bim_snippet_schema
         bim_snippet.snippet_type = blender_topic.bim_snippet_type
@@ -262,15 +278,16 @@ class AddBcfBimSnippet(bpy.types.Operator):
 class AddBcfRelatedTopic(bpy.types.Operator):
     bl_idname = "bim.add_bcf_related_topic"
     bl_label = "Add BCF Related Topic"
+    bl_options = {"REGISTER", "UNDO"}
 
     def execute(self, context):
         bcfxml = bcfstore.BcfStore.get_bcfxml()
-        props = bpy.context.scene.BCFProperties
+        props = context.scene.BCFProperties
         blender_topic = props.topics[props.active_topic_index]
         related_topic = None
         for topic in bcfxml.topics.values():
             if topic.title == blender_topic.related_topic:
-                related_topic = bcf.data.RelatedTopic()
+                related_topic = bcf.v2.data.RelatedTopic()
                 related_topic.guid = topic.guid
                 break
         if not related_topic:
@@ -285,13 +302,14 @@ class AddBcfRelatedTopic(bpy.types.Operator):
 class AddBcfHeaderFile(bpy.types.Operator):
     bl_idname = "bim.add_bcf_header_file"
     bl_label = "Add BCF Header File"
+    bl_options = {"REGISTER", "UNDO"}
 
     def execute(self, context):
         bcfxml = bcfstore.BcfStore.get_bcfxml()
-        props = bpy.context.scene.BCFProperties
+        props = context.scene.BCFProperties
         blender_topic = props.topics[props.active_topic_index]
         topic = bcfxml.topics[blender_topic.name]
-        header_file = bcf.data.HeaderFile()
+        header_file = bcf.v2.data.HeaderFile()
         header_file.reference = blender_topic.file_reference
         if not os.path.exists(header_file.reference):
             header_file.filename = header_file.reference
@@ -307,58 +325,60 @@ class AddBcfHeaderFile(bpy.types.Operator):
 class ViewBcfTopic(bpy.types.Operator):
     bl_idname = "bim.view_bcf_topic"
     bl_label = "Get BCF Topic"
+    bl_options = {"REGISTER", "UNDO"}
     topic_guid: bpy.props.StringProperty()
 
     def execute(self, context):
-        for index, topic in enumerate(bpy.context.scene.BCFProperties.topics):
+        for index, topic in enumerate(context.scene.BCFProperties.topics):
             if topic.guid.lower() == self.topic_guid.lower():
-                bpy.context.scene.BCFProperties.active_topic_index = index
+                context.scene.BCFProperties.active_topic_index = index
         return {"FINISHED"}
 
 
 class AddBcfViewpoint(bpy.types.Operator):
     bl_idname = "bim.add_bcf_viewpoint"
     bl_label = "Add BCF Viewpoint"
+    bl_options = {"REGISTER", "UNDO"}
 
     def execute(self, context):
-        if not bpy.context.scene.camera:
+        if not context.scene.camera:
             return {"FINISHED"}
         bcfxml = bcfstore.BcfStore.get_bcfxml()
-        props = bpy.context.scene.BCFProperties
+        props = context.scene.BCFProperties
         blender_topic = props.topics[props.active_topic_index]
         topic = bcfxml.topics[blender_topic.name]
-        viewpoint = bcf.data.Viewpoint()
+        viewpoint = bcf.v2.data.Viewpoint()
 
-        if bpy.context.scene.camera.data.type == "ORTHO":
-            camera = bcf.data.OrthogonalCamera()
-            camera.view_to_world_scale = bpy.context.scene.camera.data.ortho_scale
+        if context.scene.camera.data.type == "ORTHO":
+            camera = bcf.v2.data.OrthogonalCamera()
+            camera.view_to_world_scale = context.scene.camera.data.ortho_scale
             viewpoint.orthogonal_camera = camera
-        elif bpy.context.scene.camera.data.type == "PERSP":
-            camera = bcf.data.PerspectiveCamera()
-            camera.field_of_view = degrees(bpy.context.scene.camera.data.angle)
+        elif context.scene.camera.data.type == "PERSP":
+            camera = bcf.v2.data.PerspectiveCamera()
+            camera.field_of_view = degrees(context.scene.camera.data.angle)
             viewpoint.perspective_camera = camera
-        camera.camera_view_point.x = bpy.context.scene.camera.location.x
-        camera.camera_view_point.y = bpy.context.scene.camera.location.y
-        camera.camera_view_point.z = bpy.context.scene.camera.location.z
-        direction = bpy.context.scene.camera.matrix_world.to_quaternion() @ Vector((0.0, 0.0, -1.0))
+        camera.camera_view_point.x = context.scene.camera.location.x
+        camera.camera_view_point.y = context.scene.camera.location.y
+        camera.camera_view_point.z = context.scene.camera.location.z
+        direction = context.scene.camera.matrix_world.to_quaternion() @ Vector((0.0, 0.0, -1.0))
         camera.camera_direction.x = direction.x
         camera.camera_direction.y = direction.y
         camera.camera_direction.z = direction.z
-        up = bpy.context.scene.camera.matrix_world.to_quaternion() @ Vector((0.0, 1.0, 0.0))
+        up = context.scene.camera.matrix_world.to_quaternion() @ Vector((0.0, 1.0, 0.0))
         camera.camera_up_vector.x = up.x
         camera.camera_up_vector.y = up.y
         camera.camera_up_vector.z = up.z
 
-        old_file_format = bpy.context.scene.render.image_settings.file_format
-        bpy.context.scene.render.image_settings.file_format = "PNG"
-        old_filepath = bpy.context.scene.render.filepath
-        bpy.context.scene.render.filepath = os.path.join(bpy.context.scene.BIMProperties.data_dir, "snapshot.png")
+        old_file_format = context.scene.render.image_settings.file_format
+        context.scene.render.image_settings.file_format = "PNG"
+        old_filepath = context.scene.render.filepath
+        context.scene.render.filepath = os.path.join(context.scene.BIMProperties.data_dir, "snapshot.png")
         bpy.ops.render.opengl(write_still=True)
-        viewpoint.snapshot = bpy.context.scene.render.filepath
+        viewpoint.snapshot = context.scene.render.filepath
 
         bcfxml.add_viewpoint(topic, viewpoint)
-        bpy.context.scene.render.filepath = old_filepath
-        bpy.context.scene.render.image_settings.file_format = old_file_format
+        context.scene.render.filepath = old_filepath
+        context.scene.render.image_settings.file_format = old_file_format
         props.active_topic_index = props.active_topic_index # refreshes the BCF Topic
         return {"FINISHED"}
 
@@ -366,10 +386,11 @@ class AddBcfViewpoint(bpy.types.Operator):
 class RemoveBcfViewpoint(bpy.types.Operator):
     bl_idname = "bim.remove_bcf_viewpoint"
     bl_label = "Remove BCF Viewpoint"
+    bl_options = {"REGISTER", "UNDO"}
 
     def execute(self, context):
         bcfxml = bcfstore.BcfStore.get_bcfxml()
-        props = bpy.context.scene.BCFProperties
+        props = context.scene.BCFProperties
         blender_topic = props.topics[props.active_topic_index]
         viewpoint_guid = blender_topic.viewpoints
         topic = bcfxml.topics[blender_topic.name]
@@ -381,11 +402,12 @@ class RemoveBcfViewpoint(bpy.types.Operator):
 class RemoveBcfFile(bpy.types.Operator):
     bl_idname = "bim.remove_bcf_file"
     bl_label = "Remove BCF File"
+    bl_options = {"REGISTER", "UNDO"}
     index: bpy.props.IntProperty()
 
     def execute(self, context):
         bcfxml = bcfstore.BcfStore.get_bcfxml()
-        props = bpy.context.scene.BCFProperties
+        props = context.scene.BCFProperties
         blender_topic = props.topics[props.active_topic_index]
         topic = bcfxml.topics[blender_topic.name]
         bcfxml.delete_file(topic, self.index)
@@ -396,10 +418,11 @@ class RemoveBcfFile(bpy.types.Operator):
 class AddBcfReferenceLink(bpy.types.Operator):
     bl_idname = "bim.add_bcf_reference_link"
     bl_label = "Add BCF Reference Link"
+    bl_options = {"REGISTER", "UNDO"}
 
     def execute(self, context):
         bcfxml = bcfstore.BcfStore.get_bcfxml()
-        props = bpy.context.scene.BCFProperties
+        props = context.scene.BCFProperties
         blender_topic = props.topics[props.active_topic_index]
         topic = bcfxml.topics[blender_topic.name]
         if not blender_topic.reference_link:
@@ -414,15 +437,16 @@ class AddBcfReferenceLink(bpy.types.Operator):
 class AddBcfDocumentReference(bpy.types.Operator):
     bl_idname = "bim.add_bcf_document_reference"
     bl_label = "Add BCF Document Reference"
+    bl_options = {"REGISTER", "UNDO"}
 
     def execute(self, context):
         bcfxml = bcfstore.BcfStore.get_bcfxml()
-        props = bpy.context.scene.BCFProperties
+        props = context.scene.BCFProperties
         blender_topic = props.topics[props.active_topic_index]
         topic = bcfxml.topics[blender_topic.name]
         if not blender_topic.document_reference:
             return {"FINISHED"}
-        document_reference = bcf.data.DocumentReference()
+        document_reference = bcf.v2.data.DocumentReference()
         document_reference.referenced_document = blender_topic.document_reference
         document_reference.description = blender_topic.document_reference_description or None
         bcfxml.add_document_reference(topic, document_reference)
@@ -435,10 +459,11 @@ class AddBcfDocumentReference(bpy.types.Operator):
 class AddBcfLabel(bpy.types.Operator):
     bl_idname = "bim.add_bcf_label"
     bl_label = "Add BCF Label"
+    bl_options = {"REGISTER", "UNDO"}
 
     def execute(self, context):
         bcfxml = bcfstore.BcfStore.get_bcfxml()
-        props = bpy.context.scene.BCFProperties
+        props = context.scene.BCFProperties
         blender_topic = props.topics[props.active_topic_index]
         topic = bcfxml.topics[blender_topic.name]
         if not blender_topic.label:
@@ -454,10 +479,11 @@ class AddBcfLabel(bpy.types.Operator):
 class EditBcfReferenceLinks(bpy.types.Operator):
     bl_idname = "bim.edit_bcf_reference_links"
     bl_label = "Edit BCF Reference Link"
+    bl_options = {"REGISTER", "UNDO"}
 
     def execute(self, context):
         bcfxml = bcfstore.BcfStore.get_bcfxml()
-        props = bpy.context.scene.BCFProperties
+        props = context.scene.BCFProperties
         blender_topic = props.topics[props.active_topic_index]
         topic = bcfxml.topics[blender_topic.name]
         for index, reference_link in enumerate(topic.reference_links):
@@ -471,10 +497,11 @@ class EditBcfReferenceLinks(bpy.types.Operator):
 class EditBcfLabels(bpy.types.Operator):
     bl_idname = "bim.edit_bcf_labels"
     bl_label = "Edit BCF Labels"
+    bl_options = {"REGISTER", "UNDO"}
 
     def execute(self, context):
         bcfxml = bcfstore.BcfStore.get_bcfxml()
-        props = bpy.context.scene.BCFProperties
+        props = context.scene.BCFProperties
         blender_topic = props.topics[props.active_topic_index]
         topic = bcfxml.topics[blender_topic.name]
         for index, label in enumerate(blender_topic.labels):
@@ -488,11 +515,12 @@ class EditBcfLabels(bpy.types.Operator):
 class RemoveBcfReferenceLink(bpy.types.Operator):
     bl_idname = "bim.remove_bcf_reference_link"
     bl_label = "Remove BCF Reference Link"
+    bl_options = {"REGISTER", "UNDO"}
     index: bpy.props.IntProperty()
 
     def execute(self, context):
         bcfxml = bcfstore.BcfStore.get_bcfxml()
-        props = bpy.context.scene.BCFProperties
+        props = context.scene.BCFProperties
         blender_topic = props.topics[props.active_topic_index]
         topic = bcfxml.topics[blender_topic.name]
         del topic.reference_links[self.index]
@@ -504,11 +532,12 @@ class RemoveBcfReferenceLink(bpy.types.Operator):
 class RemoveBcfLabel(bpy.types.Operator):
     bl_idname = "bim.remove_bcf_label"
     bl_label = "Remove BCF Label"
+    bl_options = {"REGISTER", "UNDO"}
     index: bpy.props.IntProperty()
 
     def execute(self, context):
         bcfxml = bcfstore.BcfStore.get_bcfxml()
-        props = bpy.context.scene.BCFProperties
+        props = context.scene.BCFProperties
         blender_topic = props.topics[props.active_topic_index]
         topic = bcfxml.topics[blender_topic.name]
         del topic.labels[self.index]
@@ -520,10 +549,11 @@ class RemoveBcfLabel(bpy.types.Operator):
 class RemoveBcfBimSnippet(bpy.types.Operator):
     bl_idname = "bim.remove_bcf_bim_snippet"
     bl_label = "Remove BCF BIM Snippet"
+    bl_options = {"REGISTER", "UNDO"}
 
     def execute(self, context):
         bcfxml = bcfstore.BcfStore.get_bcfxml()
-        props = bpy.context.scene.BCFProperties
+        props = context.scene.BCFProperties
         blender_topic = props.topics[props.active_topic_index]
         topic = bcfxml.topics[blender_topic.name]
         bcfxml.delete_bim_snippet(topic)
@@ -536,11 +566,12 @@ class RemoveBcfBimSnippet(bpy.types.Operator):
 class RemoveBcfDocumentReference(bpy.types.Operator):
     bl_idname = "bim.remove_bcf_document_reference"
     bl_label = "Remove BCF Document Reference"
+    bl_options = {"REGISTER", "UNDO"}
     index: bpy.props.IntProperty()
 
     def execute(self, context):
         bcfxml = bcfstore.BcfStore.get_bcfxml()
-        props = bpy.context.scene.BCFProperties
+        props = context.scene.BCFProperties
         blender_topic = props.topics[props.active_topic_index]
         topic = bcfxml.topics[blender_topic.name]
         bcfxml.delete_document_reference(topic, self.index)
@@ -551,11 +582,12 @@ class RemoveBcfDocumentReference(bpy.types.Operator):
 class RemoveBcfRelatedTopic(bpy.types.Operator):
     bl_idname = "bim.remove_bcf_related_topic"
     bl_label = "Remove BCF Related Topic"
+    bl_options = {"REGISTER", "UNDO"}
     index: bpy.props.IntProperty()
 
     def execute(self, context):
         bcfxml = bcfstore.BcfStore.get_bcfxml()
-        props = bpy.context.scene.BCFProperties
+        props = context.scene.BCFProperties
         blender_topic = props.topics[props.active_topic_index]
         topic = bcfxml.topics[blender_topic.name]
         del topic.related_topics[self.index]
@@ -567,11 +599,12 @@ class RemoveBcfRelatedTopic(bpy.types.Operator):
 class RemoveBcfComment(bpy.types.Operator):
     bl_idname = "bim.remove_bcf_comment"
     bl_label = "Remove BCF Comment"
+    bl_options = {"REGISTER", "UNDO"}
     comment_guid: bpy.props.StringProperty()
 
     def execute(self, context):
         bcfxml = bcfstore.BcfStore.get_bcfxml()
-        props = bpy.context.scene.BCFProperties
+        props = context.scene.BCFProperties
         blender_topic = props.topics[props.active_topic_index]
         topic = bcfxml.topics[blender_topic.name]
         bcfxml.delete_comment(self.comment_guid, topic)
@@ -582,11 +615,12 @@ class RemoveBcfComment(bpy.types.Operator):
 class EditBcfComment(bpy.types.Operator):
     bl_idname = "bim.edit_bcf_comment"
     bl_label = "Edit BCF Comment"
+    bl_options = {"REGISTER", "UNDO"}
     comment_guid: bpy.props.StringProperty()
 
     def execute(self, context):
         bcfxml = bcfstore.BcfStore.get_bcfxml()
-        props = bpy.context.scene.BCFProperties
+        props = context.scene.BCFProperties
         blender_topic = props.topics[props.active_topic_index]
         blender_comment = blender_topic.comments.get(self.comment_guid)
         topic = bcfxml.topics[blender_topic.name]
@@ -600,34 +634,35 @@ class EditBcfComment(bpy.types.Operator):
 class AddBcfComment(bpy.types.Operator):
     bl_idname = "bim.add_bcf_comment"
     bl_label = "Add BCF Comment"
+    bl_options = {"REGISTER", "UNDO"}
     comment_guid: bpy.props.StringProperty()
 
     def execute(self, context):
         bcfxml = bcfstore.BcfStore.get_bcfxml()
-        props = bpy.context.scene.BCFProperties
+        props = context.scene.BCFProperties
         blender_topic = props.topics[props.active_topic_index]
         topic = bcfxml.topics[blender_topic.name]
         if not blender_topic.comment:
             return {"FINISHED"}
-        comment = bcf.data.Comment()
+        comment = bcf.v2.data.Comment()
         comment.comment = blender_topic.comment
         if blender_topic.has_related_viewpoint and blender_topic.viewpoints:
-            comment.viewpoint = bcf.data.Viewpoint()
+            comment.viewpoint = bcf.v2.data.Viewpoint()
             comment.viewpoint.guid = blender_topic.viewpoints
         bcfxml.add_comment(topic, comment)
         bpy.ops.bim.load_bcf_comments(topic_guid = topic.guid)
-        print(bcfxml.filepath)
         return {"FINISHED"}
 
 
 class ActivateBcfViewpoint(bpy.types.Operator):
     bl_idname = "bim.activate_bcf_viewpoint"
     bl_label = "Activate BCF Viewpoint"
+    bl_options = {"REGISTER", "UNDO"}
 
     def execute(self, context):
         self.file = IfcStore.get_file()
         bcfxml = bcfstore.BcfStore.get_bcfxml()
-        props = bpy.context.scene.BCFProperties
+        props = context.scene.BCFProperties
         blender_topic = props.topics[props.active_topic_index]
         topic = bcfxml.topics[blender_topic.name]
         if not topic.viewpoints:
@@ -638,11 +673,11 @@ class ActivateBcfViewpoint(bpy.types.Operator):
         obj = bpy.data.objects.get("Viewpoint")
         if not obj:
             obj = bpy.data.objects.new("Viewpoint", bpy.data.cameras.new("Viewpoint"))
-            bpy.context.scene.collection.objects.link(obj)
-            bpy.context.scene.camera = obj
+            context.scene.collection.objects.link(obj)
+            context.scene.camera = obj
 
-        cam_width = bpy.context.scene.render.resolution_x
-        cam_height = bpy.context.scene.render.resolution_y
+        cam_width = context.scene.render.resolution_x
+        cam_height = context.scene.render.resolution_y
         cam_aspect = cam_width / cam_height
 
         if viewpoint.snapshot:
@@ -662,7 +697,7 @@ class ActivateBcfViewpoint(bpy.types.Operator):
             else:
                 background.frame_method = "CROP"
             background.display_depth = "FRONT"
-        area = next(area for area in bpy.context.screen.areas if area.type == "VIEW_3D")
+        area = next(area for area in context.screen.areas if area.type == "VIEW_3D")
         area.spaces[0].region_3d.view_perspective = "CAMERA"
 
         if viewpoint.orthogonal_camera:
@@ -684,13 +719,13 @@ class ActivateBcfViewpoint(bpy.types.Operator):
         if gp:
             bpy.data.grease_pencils.remove(gp)
         if viewpoint.lines:
-            self.draw_lines(viewpoint)
+            self.draw_lines(viewpoint, context)
 
-        self.delete_clipping_planes()
+        self.delete_clipping_planes(context)
         if viewpoint.clipping_planes:
             self.create_clipping_planes(viewpoint)
 
-        self.delete_bitmaps()
+        self.delete_bitmaps(context)
         if viewpoint.bitmaps:
             self.create_bitmaps(bcfxml, viewpoint, topic)
 
@@ -741,9 +776,9 @@ class ActivateBcfViewpoint(bpy.types.Operator):
             if global_id in global_id_colours:
                 obj.color = self.hex_to_rgb(global_id_colours[global_id])
 
-    def draw_lines(self, viewpoint):
+    def draw_lines(self, viewpoint, context):
         gp = bpy.data.grease_pencils.new("BCF")
-        scene = bpy.context.scene
+        scene = context.scene
         scene.grease_pencil = gp
         scene.frame_set(1)
         layer = gp.layers.new("BCF Annotation", set_active=True)
@@ -773,19 +808,19 @@ class ActivateBcfViewpoint(bpy.types.Operator):
             )
             n += 1
 
-    def delete_clipping_planes(self):
+    def delete_clipping_planes(self, context):
         collection = bpy.data.collections.get("Sections")
         if not collection:
             return
         for section in collection.objects:
-            bpy.context.view_layer.objects.active = section
+            context.view_layer.objects.active = section
             bpy.ops.bim.remove_section_plane()
 
-    def delete_bitmaps(self):
+    def delete_bitmaps(self, context):
         collection = bpy.data.collections.get("Bitmaps")
         if not collection:
             collection = bpy.data.collections.new("Bitmaps")
-            bpy.context.scene.collection.children.link(collection)
+            context.scene.collection.children.link(collection)
         for bitmap in collection.objects:
             bpy.data.objects.remove(bitmap)
 
@@ -825,18 +860,19 @@ class OpenBcfReferenceLink(bpy.types.Operator):
     index: bpy.props.IntProperty()
 
     def execute(self, context):
-        webbrowser.open(bpy.context.scene.BCFProperties.topic_links[self.index].name)
+        webbrowser.open(context.scene.BCFProperties.topic_links[self.index].name)
         return {"FINISHED"}
 
 
 class SelectBcfHeaderFile(bpy.types.Operator):
     bl_idname = "bim.select_bcf_header_file"
     bl_label = "Select BCF Header File"
+    bl_options = {"REGISTER", "UNDO"}
     filepath: bpy.props.StringProperty(subtype="FILE_PATH")
 
     def execute(self, context):
         if self.filepath:
-            props = bpy.context.scene.BCFProperties
+            props = context.scene.BCFProperties
             topic = props.topics[props.active_topic_index]
             topic.file_reference = self.filepath
         return {"FINISHED"}
@@ -849,11 +885,12 @@ class SelectBcfHeaderFile(bpy.types.Operator):
 class SelectBcfBimSnippetReference(bpy.types.Operator):
     bl_idname = "bim.select_bcf_bim_snippet_reference"
     bl_label = "Select BCF BIM Snippet Reference"
+    bl_options = {"REGISTER", "UNDO"}
     filepath: bpy.props.StringProperty(subtype="FILE_PATH")
 
     def execute(self, context):
         if self.filepath:
-            props = bpy.context.scene.BCFProperties
+            props = context.scene.BCFProperties
             topic = props.topics[props.active_topic_index]
             topic.bim_snippet_reference = self.filepath
         return {"FINISHED"}
@@ -866,11 +903,12 @@ class SelectBcfBimSnippetReference(bpy.types.Operator):
 class SelectBcfDocumentReference(bpy.types.Operator):
     bl_idname = "bim.select_bcf_document_reference"
     bl_label = "Select BCF Document Reference"
+    bl_options = {"REGISTER", "UNDO"}
     filepath: bpy.props.StringProperty(subtype="FILE_PATH")
 
     def execute(self, context):
         if self.filepath:
-            props = bpy.context.scene.BCFProperties
+            props = context.scene.BCFProperties
             topic = props.topics[props.active_topic_index]
             topic.document_reference = self.filepath
         return {"FINISHED"}

src/blenderbim/blenderbim/bim/module/bcf/prop.py

@@ -17,38 +17,43 @@ from bpy.props import (
 bcfviewpoints_enum = None
 
 
+def purge():
+    global bcfviewpoints_enum
+    bcfviewpoints_enum = None
+
+
 def updateBcfReferenceLink(self, context):
-    if bpy.context.scene.BCFProperties.is_loaded:
+    if context.scene.BCFProperties.is_loaded:
         bpy.ops.bim.edit_bcf_reference_links()
 
 
 def updateBcfLabel(self, context):
-    if bpy.context.scene.BCFProperties.is_loaded:
+    if context.scene.BCFProperties.is_loaded:
         bpy.ops.bim.edit_bcf_labels()
 
 
 def updateBcfProjectName(self, context):
-    if bpy.context.scene.BCFProperties.is_loaded:
+    if context.scene.BCFProperties.is_loaded:
         bpy.ops.bim.edit_bcf_project_name()
 
 
 def updateBcfAuthor(self, context):
-    if bpy.context.scene.BCFProperties.is_loaded:
+    if context.scene.BCFProperties.is_loaded:
         bpy.ops.bim.edit_bcf_author()
 
 
 def updateBcfTopicName(self, context):
-    if bpy.context.scene.BCFProperties.is_loaded:
+    if context.scene.BCFProperties.is_loaded:
         bpy.ops.bim.edit_bcf_topic_name()
 
 
 def updateBcfTopicIsEditable(self, context):
-    if bpy.context.scene.BCFProperties.is_loaded and not self.is_editable:
+    if context.scene.BCFProperties.is_loaded and not self.is_editable:
         bpy.ops.bim.edit_bcf_topic()
 
 
 def updateBcfCommentIsEditable(self, context):
-    if bpy.context.scene.BCFProperties.is_loaded and not self.is_editable:
+    if context.scene.BCFProperties.is_loaded and not self.is_editable:
         bpy.ops.bim.edit_bcf_comment(comment_guid = self.name)
 
 
@@ -56,7 +61,7 @@ def refreshBcfTopic(self, context):
     global bcfviewpoints_enum
     bcfviewpoints_enum = None
 
-    props = bpy.context.scene.BCFProperties
+    props = context.scene.BCFProperties
     bcfxml = bcfstore.BcfStore.get_bcfxml()
     topic = props.topics[props.active_topic_index]
     header = bcfxml.get_header(topic.name)
@@ -75,7 +80,7 @@ def getBcfViewpoints(self, context):
     global bcfviewpoints_enum
     if bcfviewpoints_enum is None:
         bcfviewpoints_enum = []
-        props = bpy.context.scene.BCFProperties
+        props = context.scene.BCFProperties
         bcfxml = bcfstore.BcfStore.get_bcfxml()
         topic = props.topics[props.active_topic_index]
         viewpoints = bcfxml.get_viewpoints(topic.name)

src/blenderbim/blenderbim/bim/module/bcf/ui.py

@@ -17,7 +17,7 @@ class BIM_PT_bcf(Panel):
         layout.use_property_decorate = False
 
         scene = context.scene
-        props = bpy.context.scene.BCFProperties
+        props = scene.BCFProperties
 
         row = layout.row(align=True)
         row.operator("bim.new_bcf_project", text="New Project")
@@ -34,7 +34,7 @@ class BIM_PT_bcf(Panel):
         row = layout.row()
         row.prop(props, "author")
 
-        props = bpy.context.scene.BCFProperties
+        props = context.scene.BCFProperties
         row = layout.row()
         row.template_list("BIM_UL_topics", "", props, "topics", props, "active_topic_index")
         col = row.column(align=True)
@@ -93,7 +93,7 @@ class BIM_PT_bcf_metadata(Panel):
         layout.use_property_decorate = False
 
         scene = context.scene
-        props = bpy.context.scene.BCFProperties
+        props = scene.BCFProperties
 
         if props.active_topic_index >= len(props.topics):
             layout.label(text="No BCF project is loaded")
@@ -236,7 +236,7 @@ class BIM_PT_bcf_comments(Panel):
         layout.use_property_decorate = False
 
         scene = context.scene
-        props = bpy.context.scene.BCFProperties
+        props = scene.BCFProperties
 
         if props.active_topic_index >= len(props.topics):
             layout.label(text="No BCF project is loaded")

src/blenderbim/blenderbim/bim/module/bimtester/operator.py

@@ -52,11 +52,11 @@ class BIMTesterPurge(bpy.types.Operator):
 
     def execute(self, context):
         filename = os.path.join(
-            bpy.context.scene.BimTesterProperties.features_dir,
-            bpy.context.scene.BimTesterProperties.features_file + ".feature",
+            context.scene.BimTesterProperties.features_dir,
+            context.scene.BimTesterProperties.features_file + ".feature",
         )
         cwd = os.getcwd()
-        os.chdir(bpy.context.scene.BimTesterProperties.features_dir)
+        os.chdir(context.scene.BimTesterProperties.features_dir)
         bimtester.clean.TestPurger().purge()
         os.chdir(cwd)
         return {"FINISHED"}
@@ -65,12 +65,13 @@ class BIMTesterPurge(bpy.types.Operator):
 class SelectFeature(bpy.types.Operator):
     bl_idname = "bim.select_feature"
     bl_label = "Select Feature / IDS"
+    bl_options = {"REGISTER", "UNDO"}
     filename_ext = ".feature"
     filter_glob: bpy.props.StringProperty(default="*.feature;*.xml", options={"HIDDEN"})
     filepath: bpy.props.StringProperty(subtype="FILE_PATH")
 
     def execute(self, context):
-        bpy.context.scene.BimTesterProperties.feature = self.filepath
+        context.scene.BimTesterProperties.feature = self.filepath
         return {"FINISHED"}
 
     def invoke(self, context, event):
@@ -81,12 +82,13 @@ class SelectFeature(bpy.types.Operator):
 class SelectSteps(bpy.types.Operator):
     bl_idname = "bim.select_steps"
     bl_label = "Select Steps"
+    bl_options = {"REGISTER", "UNDO"}
     filename_ext = ".py"
     filter_glob: bpy.props.StringProperty(default="*.py", options={"HIDDEN"})
     filepath: bpy.props.StringProperty(subtype="FILE_PATH")
 
     def execute(self, context):
-        bpy.context.scene.BimTesterProperties.steps = self.filepath
+        context.scene.BimTesterProperties.steps = self.filepath
         return {"FINISHED"}
 
     def invoke(self, context, event):
@@ -97,6 +99,7 @@ class SelectSteps(bpy.types.Operator):
 class SelectBIMTesterIfcFile(bpy.types.Operator):
     bl_idname = "bim.select_bimtester_ifc_file"
     bl_label = "Select BIMTester IFC File"
+    bl_options = {"REGISTER", "UNDO"}
     filename_ext = ".ifc"
     filter_glob: bpy.props.StringProperty(default="*.ifc;*.ifczip;*.ifcxml", options={"HIDDEN"})
     filepath: bpy.props.StringProperty(subtype="FILE_PATH")
@@ -117,14 +120,14 @@ class RejectElement(bpy.types.Operator):
     def execute(self, context):
         lines = []
         self.file = IfcStore.get_file()
-        for obj in bpy.context.selected_objects:
+        for obj in context.selected_objects:
             lines.append(
                 " * The element {} should not exist because {}".format(
                     self.file.by_id(obj.BIMObjectProperties.ifc_definition_id).GlobalId,
-                    bpy.context.scene.BimTesterProperties.qa_reject_element_reason,
+                    context.scene.BimTesterProperties.qa_reject_element_reason,
                 )
             )
-        QAHelper.append_to_scenario(lines)
+        QAHelper.append_to_scenario(lines, context)
         return {"FINISHED"}
 
 
@@ -135,12 +138,12 @@ class ApproveClass(bpy.types.Operator):
     def execute(self, context):
         lines = []
         self.file = IfcStore.get_file()
-        for obj in bpy.context.selected_objects:
+        for obj in context.selected_objects:
             if not obj.BIMObjectProperties.ifc_definition_id:
                 continue
             element = self.file.by_id(obj.BIMObjectProperties.ifc_definition_id)
             lines.append(" * The element {} is an {}".format(element.GlobalId, element.is_a()))
-        QAHelper.append_to_scenario(lines)
+        QAHelper.append_to_scenario(lines, context)
         return {"FINISHED"}
 
 
@@ -151,27 +154,28 @@ class RejectClass(bpy.types.Operator):
     def execute(self, context):
         lines = []
         self.file = IfcStore.get_file()
-        for obj in bpy.context.selected_objects:
+        for obj in context.selected_objects:
             if not obj.BIMObjectProperties.ifc_definition_id:
                 continue
             lines.append(
                 " * The element {} is an {}".format(
                     self.file.by_id(obj.BIMObjectProperties.ifc_definition_id).GlobalId,
-                    bpy.context.scene.BimTesterProperties.audit_ifc_class,
+                    context.scene.BimTesterProperties.audit_ifc_class,
                 )
             )
-        QAHelper.append_to_scenario(lines)
+        QAHelper.append_to_scenario(lines, context)
         return {"FINISHED"}
 
 
 class SelectAudited(bpy.types.Operator):
     bl_idname = "bim.select_audited"
     bl_label = "Select Audited"
+    bl_options = {"REGISTER", "UNDO"}
 
     def execute(self, context):
         audited_global_ids = []
         self.file = IfcStore.get_file()
-        for filename in Path(bpy.context.scene.BimTesterProperties.features_dir).glob("*.feature"):
+        for filename in Path(context.scene.BimTesterProperties.features_dir).glob("*.feature"):
             with open(filename, "r") as feature_file:
                 lines = feature_file.readlines()
                 for line in lines:
@@ -179,7 +183,7 @@ class SelectAudited(bpy.types.Operator):
                     for word in words:
                         if self.is_a_global_id(word):
                             audited_global_ids.append(word)
-        for obj in bpy.context.visible_objects:
+        for obj in context.visible_objects:
             if not obj.BIMObjectProperties.ifc_definition_id:
                 continue
             if self.file.by_id(obj.BIMObjectProperties.ifc_definition_id).GlobalId in audited_global_ids:
@@ -192,10 +196,10 @@ class SelectAudited(bpy.types.Operator):
 
 class QAHelper:
     @classmethod
-    def append_to_scenario(cls, lines):
+    def append_to_scenario(cls, lines, context):
         filename = os.path.join(
-            bpy.context.scene.BimTesterProperties.features_dir,
-            bpy.context.scene.BimTesterProperties.features_file + ".feature",
+            context.scene.BimTesterProperties.features_dir,
+            context.scene.BimTesterProperties.features_file + ".feature",
         )
         if os.path.exists(filename + "~"):
             os.remove(filename + "~")
@@ -206,7 +210,7 @@ class QAHelper:
                 for source_line in source:
                     if (
                         "Scenario: " in source_line
-                        and bpy.context.scene.BimTesterProperties.scenario == source_line.strip()[len("Scenario: ") :]
+                        and context.scene.BimTesterProperties.scenario == source_line.strip()[len("Scenario: ") :]
                     ):
                         is_in_scenario = True
                     elif is_in_scenario:

src/blenderbim/blenderbim/bim/module/bimtester/prop.py

@@ -18,6 +18,13 @@ scenarios_enum = []
 classes_enum = []
 
 
+def purge():
+    global scenarios_enum
+    global classes_enum
+    scenarios_enum = []
+    classes_enum = []
+
+
 def getScenarios(self, context):
     global scenarios_enum
     if len(scenarios_enum) < 1:

src/blenderbim/blenderbim/bim/module/boundary/__init__.py

@@ -0,0 +1,14 @@
+import bpy
+from . import ui
+
+classes = (
+    ui.BIM_PT_boundary,
+)
+
+
+def register():
+    pass
+
+
+def unregister():
+    pass

src/blenderbim/blenderbim/bim/module/boundary/ui.py

@@ -0,0 +1,36 @@
+import bpy
+import blenderbim.bim.helper
+from bpy.types import Panel, UIList
+from blenderbim.bim.ifc import IfcStore
+from ifcopenshell.api.boundary.data import Data
+
+
+class BIM_PT_boundary(Panel):
+    bl_label = "IFC Space Boundaries"
+    bl_idname = "BIM_PT_boundary"
+    bl_options = {"DEFAULT_CLOSED"}
+    bl_space_type = "PROPERTIES"
+    bl_region_type = "WINDOW"
+    bl_context = "object"
+
+    @classmethod
+    def poll(cls, context):
+        if not context.active_object:
+            return False
+        props = context.active_object.BIMObjectProperties
+        if not props.ifc_definition_id:
+            return False
+        if not IfcStore.get_element(props.ifc_definition_id):
+            return False
+        if IfcStore.get_file().by_id(props.ifc_definition_id).is_a() not in ["IfcSpace", "IfcExternalSpatialElement"]:
+            return False
+        return True
+
+    def draw(self, context):
+        self.oprops = context.active_object.BIMObjectProperties
+        if not Data.is_loaded:
+            Data.load(IfcStore.get_file())
+        for boundary_id in Data.spaces.get(self.oprops.ifc_definition_id, []):
+            boundary = Data.boundaries[boundary_id]
+            row = self.layout.row()
+            row.label(text=f"{boundary_id}", icon="GHOST_ENABLED")

src/blenderbim/blenderbim/bim/module/clash/operator.py

@@ -23,7 +23,7 @@ class ExportClashSets(bpy.types.Operator):
     def execute(self, context):
         self.filepath = bpy.path.ensure_ext(self.filepath, ".json")
         clash_sets = []
-        for clash_set in bpy.context.scene.BIMClashProperties.clash_sets:
+        for clash_set in context.scene.BIMClashProperties.clash_sets:
             self.a = []
             self.b = []
             for ab in ["a", "b"]:
@@ -42,6 +42,7 @@ class ExportClashSets(bpy.types.Operator):
 class ImportClashSets(bpy.types.Operator):
     bl_idname = "bim.import_clash_sets"
     bl_label = "Import Clash Sets"
+    bl_options = {"REGISTER", "UNDO"}
     filename_ext = ".json"
     filepath: bpy.props.StringProperty(subtype="FILE_PATH")
 
@@ -55,7 +56,7 @@ class ImportClashSets(bpy.types.Operator):
         with open(self.filepath) as f:
             clash_sets = json.load(f)
         for clash_set in clash_sets:
-            new = bpy.context.scene.BIMClashProperties.clash_sets.add()
+            new = context.scene.BIMClashProperties.clash_sets.add()
             new.name = clash_set["name"]
             new.tolerance = clash_set["tolerance"]
             for clash_source in clash_set["a"]:
@@ -77,9 +78,10 @@ class ImportClashSets(bpy.types.Operator):
 class AddClashSet(bpy.types.Operator):
     bl_idname = "bim.add_clash_set"
     bl_label = "Add Clash Set"
+    bl_options = {"REGISTER", "UNDO"}
 
     def execute(self, context):
-        new = bpy.context.scene.BIMClashProperties.clash_sets.add()
+        new = context.scene.BIMClashProperties.clash_sets.add()
         new.name = "New Clash Set"
         new.tolerance = 0.01
         return {"FINISHED"}
@@ -88,20 +90,22 @@ class AddClashSet(bpy.types.Operator):
 class RemoveClashSet(bpy.types.Operator):
     bl_idname = "bim.remove_clash_set"
     bl_label = "Remove Clash Set"
+    bl_options = {"REGISTER", "UNDO"}
     index: bpy.props.IntProperty()
 
     def execute(self, context):
-        bpy.context.scene.BIMClashProperties.clash_sets.remove(self.index)
+        context.scene.BIMClashProperties.clash_sets.remove(self.index)
         return {"FINISHED"}
 
 
 class AddClashSource(bpy.types.Operator):
     bl_idname = "bim.add_clash_source"
     bl_label = "Add Clash Source"
+    bl_options = {"REGISTER", "UNDO"}
     group: bpy.props.StringProperty()
 
     def execute(self, context):
-        clash_set = bpy.context.scene.BIMClashProperties.clash_sets[bpy.context.scene.BIMClashProperties.active_clash_set_index]
+        clash_set = context.scene.BIMClashProperties.clash_sets[context.scene.BIMClashProperties.active_clash_set_index]
         source = getattr(clash_set, self.group).add()
         return {"FINISHED"}
 
@@ -109,11 +113,12 @@ class AddClashSource(bpy.types.Operator):
 class RemoveClashSource(bpy.types.Operator):
     bl_idname = "bim.remove_clash_source"
     bl_label = "Remove Clash Source"
+    bl_options = {"REGISTER", "UNDO"}
     index: bpy.props.IntProperty()
     group: bpy.props.StringProperty()
 
     def execute(self, context):
-        clash_set = bpy.context.scene.BIMClashProperties.clash_sets[bpy.context.scene.BIMClashProperties.active_clash_set_index]
+        clash_set = context.scene.BIMClashProperties.clash_sets[context.scene.BIMClashProperties.active_clash_set_index]
         getattr(clash_set, self.group).remove(self.index)
         return {"FINISHED"}
 
@@ -121,12 +126,14 @@ class RemoveClashSource(bpy.types.Operator):
 class SelectClashSource(bpy.types.Operator):
     bl_idname = "bim.select_clash_source"
     bl_label = "Select Clash Source"
+    bl_options = {"REGISTER", "UNDO"}
     filepath: bpy.props.StringProperty(subtype="FILE_PATH")
+    filter_glob: bpy.props.StringProperty(default="*.ifc", options={"HIDDEN"})
     index: bpy.props.IntProperty()
     group: bpy.props.StringProperty()
 
     def execute(self, context):
-        clash_set = bpy.context.scene.BIMClashProperties.clash_sets[bpy.context.scene.BIMClashProperties.active_clash_set_index]
+        clash_set = context.scene.BIMClashProperties.clash_sets[context.scene.BIMClashProperties.active_clash_set_index]
         getattr(clash_set, self.group)[self.index].name = self.filepath
         return {"FINISHED"}
 
@@ -138,10 +145,11 @@ class SelectClashSource(bpy.types.Operator):
 class SelectClashResults(bpy.types.Operator):
     bl_idname = "bim.select_clash_results"
     bl_label = "Select Clash Results"
+    bl_options = {"REGISTER", "UNDO"}
     filepath: bpy.props.StringProperty(subtype="FILE_PATH")
 
     def execute(self, context):
-        bpy.context.scene.BIMClashProperties.clash_results_path = self.filepath
+        context.scene.BIMClashProperties.clash_results_path = self.filepath
         return {"FINISHED"}
 
     def invoke(self, context, event):
@@ -152,10 +160,11 @@ class SelectClashResults(bpy.types.Operator):
 class SelectSmartGroupedClashesPath(bpy.types.Operator):
     bl_idname = "bim.select_smart_grouped_clashes_path"
     bl_label = "Select Smart-Grouped Clashes Path"
+    bl_options = {"REGISTER", "UNDO"}
     filepath: bpy.props.StringProperty(subtype="FILE_PATH")
 
     def execute(self, context):
-        bpy.context.scene.BIMClashProperties.smart_grouped_clashes_path = self.filepath
+        context.scene.BIMClashProperties.smart_grouped_clashes_path = self.filepath
         return {"FINISHED"}
 
     def invoke(self, context, event):
@@ -177,42 +186,42 @@ class ExecuteIfcClash(bpy.types.Operator):
         return {"RUNNING_MODAL"}
 
     def execute(self, context):
-        import ifcclash
+        from ifcclash import ifcclash
 
-        settings = ifcclash.IfcClashSettings()
+        settings = ifcclash.ClashSettings()
         if ".json" not in self.filepath:
             self.filepath = bpy.path.ensure_ext(self.filepath, ".bcf")
         settings.output = self.filepath
         settings.logger = logging.getLogger("Clash")
         settings.logger.setLevel(logging.DEBUG)
-        ifc_clasher = ifcclash.IfcClasher(settings)
+        clasher = ifcclash.Clasher(settings)
 
-        if bpy.context.scene.BIMClashProperties.should_create_clash_snapshots:
+        if context.scene.BIMClashProperties.should_create_clash_snapshots:
 
-            def get_viewpoint_snapshot(self, viewpoint, mat):
+            def get_viewpoint_snapshot(viewpoint, mat):
                 camera = bpy.data.objects.get("IFC Clash Camera")
                 if not camera:
                     camera = bpy.data.objects.new("IFC Clash Camera", bpy.data.cameras.new("IFC Clash Camera"))
-                    bpy.context.scene.collection.objects.link(camera)
+                    context.scene.collection.objects.link(camera)
                 camera.matrix_world = Matrix(mat)
-                bpy.context.scene.camera = camera
+                context.scene.camera = camera
                 camera.data.angle = radians(60)
-                area = next(area for area in bpy.context.screen.areas if area.type == "VIEW_3D")
+                area = next(area for area in context.screen.areas if area.type == "VIEW_3D")
                 area.spaces[0].region_3d.view_perspective = "CAMERA"
                 area.spaces[0].shading.show_xray = True
-                bpy.context.scene.render.resolution_x = 480
-                bpy.context.scene.render.resolution_y = 270
-                bpy.context.scene.render.image_settings.file_format = "PNG"
-                bpy.context.scene.render.filepath = os.path.join(
-                    bpy.context.scene.BIMProperties.data_dir, "snapshot.png"
+                context.scene.render.resolution_x = 480
+                context.scene.render.resolution_y = 270
+                context.scene.render.image_settings.file_format = "PNG"
+                context.scene.render.filepath = os.path.join(
+                    context.scene.BIMProperties.data_dir, "snapshot.png"
                 )
                 bpy.ops.render.opengl(write_still=True)
-                return bpy.context.scene.render.filepath
+                return context.scene.render.filepath
 
-            ifcclash.IfcClasher.get_viewpoint_snapshot = get_viewpoint_snapshot
+            clasher.get_viewpoint_snapshot = get_viewpoint_snapshot
 
-        ifc_clasher.clash_sets = []
-        for clash_set in bpy.context.scene.BIMClashProperties.clash_sets:
+        clasher.clash_sets = []
+        for clash_set in context.scene.BIMClashProperties.clash_sets:
             self.a = []
             self.b = []
             for ab in ["a", "b"]:
@@ -222,17 +231,19 @@ class ExecuteIfcClash(bpy.types.Operator):
                         clash_source["selector"] = data.selector
                         clash_source["mode"] = data.mode
                     getattr(self, ab).append(clash_source)
-            ifc_clasher.clash_sets.append(
-                {"name": clash_set.name, "tolerance": clash_set.tolerance, "a": self.a, "b": self.b}
-            )
-        ifc_clasher.clash()
-        ifc_clasher.export()
+            clash_set_data = {"name": clash_set.name, "tolerance": clash_set.tolerance, "a": self.a}
+            if self.b:
+                clash_set_data["b"] = self.b
+            clasher.clash_sets.append(clash_set_data)
+        clasher.clash()
+        clasher.export()
         return {"FINISHED"}
 
 
 class SelectIfcClashResults(bpy.types.Operator):
     bl_idname = "bim.select_ifc_clash_results"
     bl_label = "Select IFC Clash Results"
+    bl_options = {"REGISTER", "UNDO"}
     filename_ext = ".json"
     filepath: bpy.props.StringProperty(subtype="FILE_PATH")
 
@@ -246,8 +257,8 @@ class SelectIfcClashResults(bpy.types.Operator):
         self.filepath = bpy.path.ensure_ext(self.filepath, ".json")
         with open(self.filepath) as f:
             clash_sets = json.load(f)
-        clash_set_name = bpy.context.scene.BIMClashProperties.clash_sets[
-            bpy.context.scene.BIMClashProperties.active_clash_set_index
+        clash_set_name = context.scene.BIMClashProperties.clash_sets[
+            context.scene.BIMClashProperties.active_clash_set_index
         ].name
         global_ids = []
         for clash_set in clash_sets:
@@ -258,7 +269,7 @@ class SelectIfcClashResults(bpy.types.Operator):
                 return {"CANCELLED"}
             for clash in clash_set["clashes"].values():
                 global_ids.extend([clash["a_global_id"], clash["b_global_id"]])
-        for obj in bpy.context.visible_objects:
+        for obj in context.visible_objects:
             if not obj.BIMObjectProperties.ifc_definition_id:
                 continue
             element = self.file.by_id(obj.BIMObjectProperties.ifc_definition_id)
@@ -270,13 +281,14 @@ class SelectIfcClashResults(bpy.types.Operator):
 class SmartClashGroup(bpy.types.Operator):
     bl_idname = "bim.smart_clash_group"
     bl_label = "Smart Group Clashes"
+    bl_options = {"REGISTER", "UNDO"}
     filepath: bpy.props.StringProperty(subtype="FILE_PATH")
 
     def execute(self, context):
         import ifcclash
 
         settings = ifcclash.IfcClashSettings()
-        self.filepath = bpy.path.ensure_ext(bpy.context.scene.BIMClashProperties.clash_results_path, ".json")
+        self.filepath = bpy.path.ensure_ext(context.scene.BIMClashProperties.clash_results_path, ".json")
         settings.output = self.filepath
         settings.logger = logging.getLogger("Clash")
         settings.logger.setLevel(logging.DEBUG)
@@ -286,21 +298,21 @@ class SmartClashGroup(bpy.types.Operator):
             clash_sets = json.load(f)
 
         # execute the smart grouping
-        save_path = bpy.path.ensure_ext(bpy.context.scene.BIMClashProperties.smart_grouped_clashes_path, ".json")
+        save_path = bpy.path.ensure_ext(context.scene.BIMClashProperties.smart_grouped_clashes_path, ".json")
         smart_grouped_clashes = ifc_clasher.smart_group_clashes(
-            clash_sets, bpy.context.scene.BIMClashProperties.smart_clash_grouping_max_distance
+            clash_sets, context.scene.BIMClashProperties.smart_clash_grouping_max_distance
         )
 
         # save smart_groups to json
         with open(save_path, "w") as f:
             f.write(json.dumps(smart_grouped_clashes))
 
-        clash_set_name = bpy.context.scene.BIMClashProperties.clash_sets[
-            bpy.context.scene.BIMClashProperties.active_clash_set_index
+        clash_set_name = context.scene.BIMClashProperties.clash_sets[
+            context.scene.BIMClashProperties.active_clash_set_index
         ].name
 
         # Reset the list of smart_clash_groups for the UI
-        bpy.context.scene.BIMClashProperties.smart_clash_groups.clear()
+        context.scene.BIMClashProperties.smart_clash_groups.clear()
 
         for clash_set, smart_groups in smart_grouped_clashes.items():
             # Only select the clashes that correspond to the actively selected IFC Clash Set
@@ -308,7 +320,7 @@ class SmartClashGroup(bpy.types.Operator):
                 continue
             else:
                 for smart_group, global_id_pairs in smart_groups[0].items():
-                    new_group = bpy.context.scene.BIMClashProperties.smart_clash_groups.add()
+                    new_group = context.scene.BIMClashProperties.smart_clash_groups.add()
                     new_group.number = f"{smart_group}"
 
                     for pair in global_id_pairs:
@@ -322,19 +334,20 @@ class SmartClashGroup(bpy.types.Operator):
 class LoadSmartGroupsForActiveClashSet(bpy.types.Operator):
     bl_idname = "bim.load_smart_groups_for_active_clash_set"
     bl_label = "Load Smart Groups for Active Clash Set"
+    bl_options = {"REGISTER", "UNDO"}
 
     def execute(self, context):
-        smart_groups_path = bpy.path.ensure_ext(bpy.context.scene.BIMClashProperties.smart_grouped_clashes_path, ".json")
+        smart_groups_path = bpy.path.ensure_ext(context.scene.BIMClashProperties.smart_grouped_clashes_path, ".json")
 
-        clash_set_name = bpy.context.scene.BIMClashProperties.clash_sets[
-            bpy.context.scene.BIMClashProperties.active_clash_set_index
+        clash_set_name = context.scene.BIMClashProperties.clash_sets[
+            context.scene.BIMClashProperties.active_clash_set_index
         ].name
 
         with open(smart_groups_path) as f:
             smart_grouped_clashes = json.load(f)
 
         # Reset the list of smart_clash_groups for the UI
-        bpy.context.scene.BIMClashProperties.smart_clash_groups.clear()
+        context.scene.BIMClashProperties.smart_clash_groups.clear()
 
         for clash_set, smart_groups in smart_grouped_clashes.items():
             # Only select the clashes that correspond to the actively selected IFC Clash Set
@@ -342,7 +355,7 @@ class LoadSmartGroupsForActiveClashSet(bpy.types.Operator):
                 continue
             else:
                 for smart_group, global_id_pairs in smart_groups[0].items():
-                    new_group = bpy.context.scene.BIMClashProperties.smart_clash_groups.add()
+                    new_group = context.scene.BIMClashProperties.smart_clash_groups.add()
                     new_group.number = f"{smart_group}"
                     for pair in global_id_pairs:
                         for id in pair:
@@ -355,15 +368,16 @@ class LoadSmartGroupsForActiveClashSet(bpy.types.Operator):
 class SelectSmartGroup(bpy.types.Operator):
     bl_idname = "bim.select_smart_group"
     bl_label = "Select Smart Group"
+    bl_options = {"REGISTER", "UNDO"}
 
     def execute(self, context):
         # Select smart group in view
-        selected_smart_group = bpy.context.scene.BIMClashProperties.smart_clash_groups[
-            bpy.context.scene.BIMCLashProperties.active_smart_group_index
+        selected_smart_group = context.scene.BIMClashProperties.smart_clash_groups[
+            context.scene.BIMCLashProperties.active_smart_group_index
         ]
         # print(selected_smart_group.number)
 
-        for obj in bpy.context.visible_objects:
+        for obj in context.visible_objects:
             if not obj.BIMObjectProperties.ifc_definition_id:
                 continue
             element = self.file.by_id(obj.BIMObjectProperties.ifc_definition_id)
@@ -378,13 +392,13 @@ class SelectSmartGroup(bpy.types.Operator):
 
 
 class BlenderClasher:
-    def process_clash_set(self):
+    def process_clash_set(self, context):
         import collision
 
         a_cm = collision.CollisionManager()
         b_cm = collision.CollisionManager()
-        self.add_to_cm(a_cm, bpy.context.scene.BIMClashProperties.blender_clash_set_a)
-        self.add_to_cm(b_cm, bpy.context.scene.BIMClashProperties.blender_clash_set_b)
+        self.add_to_cm(a_cm, context.scene.BIMClashProperties.blender_clash_set_a, context)
+        self.add_to_cm(b_cm, context.scene.BIMClashProperties.blender_clash_set_b, context)
         results = a_cm.in_collision_other(b_cm, return_data=True)
         if not results[0]:
             print("No clashes")
@@ -397,20 +411,20 @@ class BlenderClasher:
             print(contact.raw.normal)
             print(contact.raw.pos)
 
-    def add_to_cm(self, cm, object_names):
+    def add_to_cm(self, cm, object_names, context):
         import ifcclash
 
         for object_name in object_names:
             name = object_name.name
             obj = bpy.data.objects[name]
-            triangulated_mesh = self.triangulate_mesh(obj)
+            triangulated_mesh = self.triangulate_mesh(obj, context)
             mesh = ifcclash.Mesh()
             mesh.vertices = np.array([tuple(obj.matrix_world @ v.co) for v in triangulated_mesh.vertices])
             mesh.faces = np.array([tuple(p.vertices) for p in triangulated_mesh.polygons])
             cm.add_object(name, mesh)
 
-    def triangulate_mesh(self, obj):
-        mesh = obj.evaluated_get(bpy.context.evaluated_depsgraph_get()).to_mesh()
+    def triangulate_mesh(self, obj, context):
+        mesh = obj.evaluated_get(context.evaluated_depsgraph_get()).to_mesh()
         bm = bmesh.new()
         bm.from_mesh(mesh)
         bmesh.ops.triangulate(bm, faces=bm.faces)
@@ -423,12 +437,13 @@ class BlenderClasher:
 class SetBlenderClashSetA(bpy.types.Operator):
     bl_idname = "bim.set_blender_clash_set_a"
     bl_label = "Set Blender Clash Set A"
+    bl_options = {"REGISTER", "UNDO"}
 
     def execute(self, context):
-        while len(bpy.context.scene.BIMClashProperties.blender_clash_set_a) > 0:
-            bpy.context.scene.BIMClashProperties.blender_clash_set_a.remove(0)
-        for obj in bpy.context.selected_objects:
-            new = bpy.context.scene.BIMClashProperties.blender_clash_set_a.add()
+        while len(context.scene.BIMClashProperties.blender_clash_set_a) > 0:
+            context.scene.BIMClashProperties.blender_clash_set_a.remove(0)
+        for obj in context.selected_objects:
+            new = context.scene.BIMClashProperties.blender_clash_set_a.add()
             new.name = obj.name
         return {"FINISHED"}
 
@@ -436,12 +451,13 @@ class SetBlenderClashSetA(bpy.types.Operator):
 class SetBlenderClashSetB(bpy.types.Operator):
     bl_idname = "bim.set_blender_clash_set_b"
     bl_label = "Set Blender Clash Set B"
+    bl_options = {"REGISTER", "UNDO"}
 
     def execute(self, context):
-        while len(bpy.context.scene.BIMClashProperties.blender_clash_set_b) > 0:
-            bpy.context.scene.BIMClashProperties.blender_clash_set_b.remove(0)
-        for obj in bpy.context.selected_objects:
-            new = bpy.context.scene.BIMClashProperties.blender_clash_set_b.add()
+        while len(context.scene.BIMClashProperties.blender_clash_set_b) > 0:
+            context.scene.BIMClashProperties.blender_clash_set_b.remove(0)
+        for obj in context.selected_objects:
+            new = context.scene.BIMClashProperties.blender_clash_set_b.add()
             new.name = obj.name
         return {"FINISHED"}
 
@@ -452,5 +468,5 @@ class ExecuteBlenderClash(bpy.types.Operator):
 
     def execute(self, context):
         blender_clasher = BlenderClasher()
-        blender_clasher.process_clash_set()
+        blender_clasher.process_clash_set(context)
         return {"FINISHED"}

src/blenderbim/blenderbim/bim/module/clash/prop.py

@@ -1,6 +1,5 @@
 import bpy
 from blenderbim.bim.prop import StrProperty, Attribute
-from blenderbim.bim.module.owner.data import Data
 from bpy.types import PropertyGroup
 from bpy.props import (
     PointerProperty,

src/blenderbim/blenderbim/bim/module/clash/ui.py

@@ -93,6 +93,7 @@ class BIM_PT_ifcclash(Panel):
 class BIM_PT_clash_manager(Panel):
     bl_idname = "BIM_PT_clash_manager"
     bl_label = "Clash Manager"
+    bl_options = {"DEFAULT_CLOSED"}
     bl_space_type = "VIEW_3D"
     bl_region_type = "UI"
     bl_category = "BlenderBIM"

src/blenderbim/blenderbim/bim/module/classification/operator.py

@@ -1,13 +1,8 @@
 import bpy
 import json
-import blenderbim.bim.module.classification.add_classification as add_classification
-import blenderbim.bim.module.classification.remove_classification as remove_classification
-import blenderbim.bim.module.classification.edit_classification as edit_classification
-import blenderbim.bim.module.classification.add_reference as add_reference
-import blenderbim.bim.module.classification.remove_reference as remove_reference
-import blenderbim.bim.module.classification.edit_reference as edit_reference
+import ifcopenshell.api
 from blenderbim.bim.ifc import IfcStore
-from blenderbim.bim.module.classification.data import Data
+from ifcopenshell.api.classification.data import Data
 from blenderbim.bim.module.classification.prop import getClassifications, getReferences
 
 
@@ -31,19 +26,26 @@ class LoadClassificationLibrary(bpy.types.Operator):
 class AddClassification(bpy.types.Operator):
     bl_idname = "bim.add_classification"
     bl_label = "Add Classification"
+    bl_options = {"REGISTER", "UNDO"}
 
     def execute(self, context):
+        return IfcStore.execute_ifc_operator(self, context)
+
+    def _execute(self, context):
         props = context.scene.BIMClassificationProperties
-        add_classification.Usecase(
-            IfcStore.get_file(), {"classification": Data.library_file.by_id(int(props.available_classifications))}
-        ).execute()
-        Data.load()
+        ifcopenshell.api.run(
+            "classification.add_classification",
+            IfcStore.get_file(),
+            **{"classification": Data.library_file.by_id(int(props.available_classifications))},
+        )
+        Data.load(IfcStore.get_file())
         return {"FINISHED"}
 
 
 class EnableEditingClassification(bpy.types.Operator):
     bl_idname = "bim.enable_editing_classification"
     bl_label = "Enable Editing Classification"
+    bl_options = {"REGISTER", "UNDO"}
     classification: bpy.props.IntProperty()
 
     def execute(self, context):
@@ -67,6 +69,7 @@ class EnableEditingClassification(bpy.types.Operator):
 class DisableEditingClassification(bpy.types.Operator):
     bl_idname = "bim.disable_editing_classification"
     bl_label = "Disable Editing Classification"
+    bl_options = {"REGISTER", "UNDO"}
 
     def execute(self, context):
         context.scene.BIMClassificationProperties.active_classification_id = 0
@@ -76,20 +79,32 @@ class DisableEditingClassification(bpy.types.Operator):
 class RemoveClassification(bpy.types.Operator):
     bl_idname = "bim.remove_classification"
     bl_label = "Remove Classification"
+    bl_options = {"REGISTER", "UNDO"}
     classification: bpy.props.IntProperty()
 
     def execute(self, context):
+        return IfcStore.execute_ifc_operator(self, context)
+
+    def _execute(self, context):
         self.file = IfcStore.get_file()
-        remove_classification.Usecase(self.file, {"classification": self.file.by_id(self.classification)}).execute()
-        Data.load()
+        ifcopenshell.api.run(
+            "classification.remove_classification",
+            self.file,
+            **{"classification": self.file.by_id(self.classification)},
+        )
+        Data.load(IfcStore.get_file())
         return {"FINISHED"}
 
 
 class EditClassification(bpy.types.Operator):
     bl_idname = "bim.edit_classification"
     bl_label = "Edit Classification"
+    bl_options = {"REGISTER", "UNDO"}
 
     def execute(self, context):
+        return IfcStore.execute_ifc_operator(self, context)
+
+    def _execute(self, context):
         props = context.scene.BIMClassificationProperties
         attributes = {}
         for attribute in props.classification_attributes:
@@ -100,10 +115,12 @@ class EditClassification(bpy.types.Operator):
             else:
                 attributes[attribute.name] = attribute.string_value
         self.file = IfcStore.get_file()
-        edit_classification.Usecase(
-            self.file, {"classification": self.file.by_id(props.active_classification_id), "attributes": attributes}
-        ).execute()
-        Data.load()
+        ifcopenshell.api.run(
+            "classification.edit_classification",
+            self.file,
+            **{"classification": self.file.by_id(props.active_classification_id), "attributes": attributes},
+        )
+        Data.load(IfcStore.get_file())
         bpy.ops.bim.disable_editing_classification()
         return {"FINISHED"}
 
@@ -111,11 +128,12 @@ class EditClassification(bpy.types.Operator):
 class EnableEditingClassificationReference(bpy.types.Operator):
     bl_idname = "bim.enable_editing_classification_reference"
     bl_label = "Enable Editing Classification Reference"
+    bl_options = {"REGISTER", "UNDO"}
     reference: bpy.props.IntProperty()
     obj: bpy.props.StringProperty()
 
     def execute(self, context):
-        obj = bpy.data.objects.get(self.obj) if self.obj else bpy.context.active_object
+        obj = bpy.data.objects.get(self.obj) if self.obj else context.active_object
         props = obj.BIMClassificationReferenceProperties
         while len(props.reference_attributes) > 0:
             props.reference_attributes.remove(0)
@@ -135,10 +153,11 @@ class EnableEditingClassificationReference(bpy.types.Operator):
 class DisableEditingClassificationReference(bpy.types.Operator):
     bl_idname = "bim.disable_editing_classification_reference"
     bl_label = "Disable Editing Classification Reference"
+    bl_options = {"REGISTER", "UNDO"}
     obj: bpy.props.StringProperty()
 
     def execute(self, context):
-        obj = bpy.data.objects.get(self.obj) if self.obj else bpy.context.active_object
+        obj = bpy.data.objects.get(self.obj) if self.obj else context.active_object
         obj.BIMClassificationReferenceProperties.active_reference_id = 0
         return {"FINISHED"}
 
@@ -146,31 +165,40 @@ class DisableEditingClassificationReference(bpy.types.Operator):
 class RemoveClassificationReference(bpy.types.Operator):
     bl_idname = "bim.remove_classification_reference"
     bl_label = "Remove Classification Reference"
+    bl_options = {"REGISTER", "UNDO"}
     reference: bpy.props.IntProperty()
     obj: bpy.props.StringProperty()
 
     def execute(self, context):
-        obj = bpy.data.objects.get(self.obj) if self.obj else bpy.context.active_object
+        return IfcStore.execute_ifc_operator(self, context)
+
+    def _execute(self, context):
+        obj = bpy.data.objects.get(self.obj) if self.obj else context.active_object
         self.file = IfcStore.get_file()
-        remove_reference.Usecase(
+        ifcopenshell.api.run(
+            "classification.remove_reference",
             self.file,
-            {
+            **{
                 "reference": self.file.by_id(self.reference),
                 "product": self.file.by_id(obj.BIMObjectProperties.ifc_definition_id),
             },
-        ).execute()
-        Data.load(obj.BIMObjectProperties.ifc_definition_id)
-        Data.load()
+        )
+        Data.load(IfcStore.get_file(), obj.BIMObjectProperties.ifc_definition_id)
+        Data.load(IfcStore.get_file())
         return {"FINISHED"}
 
 
 class EditClassificationReference(bpy.types.Operator):
     bl_idname = "bim.edit_classification_reference"
     bl_label = "Edit Classification Reference"
+    bl_options = {"REGISTER", "UNDO"}
     obj: bpy.props.StringProperty()
 
     def execute(self, context):
-        obj = bpy.data.objects.get(self.obj) if self.obj else bpy.context.active_object
+        return IfcStore.execute_ifc_operator(self, context)
+
+    def _execute(self, context):
+        obj = bpy.data.objects.get(self.obj) if self.obj else context.active_object
         props = obj.BIMClassificationReferenceProperties
         attributes = {}
         for attribute in props.reference_attributes:
@@ -179,10 +207,12 @@ class EditClassificationReference(bpy.types.Operator):
             else:
                 attributes[attribute.name] = attribute.string_value
         self.file = IfcStore.get_file()
-        edit_reference.Usecase(
-            self.file, {"reference": self.file.by_id(props.active_reference_id), "attributes": attributes}
-        ).execute()
-        Data.load()
+        ifcopenshell.api.run(
+            "classification.edit_reference",
+            self.file,
+            **{"reference": self.file.by_id(props.active_reference_id), "attributes": attributes},
+        )
+        Data.load(IfcStore.get_file())
         bpy.ops.bim.disable_editing_classification_reference()
         return {"FINISHED"}
 
@@ -190,11 +220,15 @@ class EditClassificationReference(bpy.types.Operator):
 class AddClassificationReference(bpy.types.Operator):
     bl_idname = "bim.add_classification_reference"
     bl_label = "Add Classification Reference"
+    bl_options = {"REGISTER", "UNDO"}
     reference: bpy.props.IntProperty()
     obj: bpy.props.StringProperty()
 
     def execute(self, context):
-        obj = bpy.data.objects.get(self.obj) if self.obj else bpy.context.active_object
+        return IfcStore.execute_ifc_operator(self, context)
+
+    def _execute(self, context):
+        obj = bpy.data.objects.get(self.obj) if self.obj else context.active_object
         self.file = IfcStore.get_file()
 
         classification = None
@@ -206,22 +240,24 @@ class AddClassificationReference(bpy.types.Operator):
                 classification = self.file.by_id(classification_id)
                 break
 
-        add_reference.Usecase(
+        ifcopenshell.api.run(
+            "classification.add_reference",
             self.file,
-            {
+            **{
                 "reference": Data.library_file.by_id(self.reference),
                 "product": self.file.by_id(obj.BIMObjectProperties.ifc_definition_id),
-                "classification": classification
+                "classification": classification,
             },
-        ).execute()
-        Data.load(obj.BIMObjectProperties.ifc_definition_id)
-        Data.load()
+        )
+        Data.load(IfcStore.get_file(), obj.BIMObjectProperties.ifc_definition_id)
+        Data.load(IfcStore.get_file())
         return {"FINISHED"}
 
 
 class ChangeClassificationLevel(bpy.types.Operator):
     bl_idname = "bim.change_classification_level"
     bl_label = "Change Classification Level"
+    bl_options = {"REGISTER", "UNDO"}
     parent_id: bpy.props.IntProperty()
 
     def execute(self, context):

src/blenderbim/blenderbim/bim/module/classification/prop.py

@@ -1,6 +1,6 @@
 import bpy
 from blenderbim.bim.prop import StrProperty, Attribute
-from blenderbim.bim.module.classification.data import Data
+from ifcopenshell.api.classification.data import Data
 from bpy.types import PropertyGroup
 from bpy.props import (
     PointerProperty,
@@ -16,6 +16,11 @@ from bpy.props import (
 classification_enum = []
 
 
+def purge():
+    global classification_enum
+    classification_enum = []
+
+
 def getClassifications(self, context):
     global classification_enum
     if len(classification_enum) < 1:

src/blenderbim/blenderbim/bim/module/classification/ui.py

@@ -1,6 +1,6 @@
 from bpy.types import Panel, UIList
 from blenderbim.bim.ifc import IfcStore
-from blenderbim.bim.module.classification.data import Data
+from ifcopenshell.api.classification.data import Data
 
 
 class BIM_PT_classifications(Panel):
@@ -17,7 +17,7 @@ class BIM_PT_classifications(Panel):
 
     def draw(self, context):
         if not Data.is_loaded:
-            Data.load()
+            Data.load(IfcStore.get_file())
 
         self.props = context.scene.BIMClassificationProperties
 
@@ -70,6 +70,8 @@ class BIM_PT_classification_references(Panel):
 
     @classmethod
     def poll(cls, context):
+        if not IfcStore.get_element(context.active_object.BIMObjectProperties.ifc_definition_id):
+            return False
         return bool(context.active_object.BIMObjectProperties.ifc_definition_id)
 
     def draw(self, context):
@@ -79,9 +81,9 @@ class BIM_PT_classification_references(Panel):
         self.props = obj.BIMClassificationReferenceProperties
         self.file = IfcStore.get_file()
         if not Data.is_loaded:
-            Data.load()
+            Data.load(IfcStore.get_file())
         if self.oprops.ifc_definition_id not in Data.products:
-            Data.load(self.oprops.ifc_definition_id)
+            Data.load(IfcStore.get_file(), self.oprops.ifc_definition_id)
 
         self.draw_add_ui()
 

src/blenderbim/blenderbim/bim/module/cobie/operator.py

@@ -11,10 +11,11 @@ from blenderbim.bim.ifc import IfcStore
 class SelectCobieIfcFile(bpy.types.Operator):
     bl_idname = "bim.select_cobie_ifc_file"
     bl_label = "Select COBie IFC File"
+    bl_options = {"REGISTER", "UNDO"}
     filepath: bpy.props.StringProperty(subtype="FILE_PATH")
 
     def execute(self, context):
-        bpy.context.scene.COBieProperties.cobie_ifc_file = self.filepath
+        context.scene.COBieProperties.cobie_ifc_file = self.filepath
         return {"FINISHED"}
 
     def invoke(self, context, event):
@@ -25,10 +26,11 @@ class SelectCobieIfcFile(bpy.types.Operator):
 class SelectCobieJsonFile(bpy.types.Operator):
     bl_idname = "bim.select_cobie_json_file"
     bl_label = "Select COBie JSON File"
+    bl_options = {"REGISTER", "UNDO"}
     filepath: bpy.props.StringProperty(subtype="FILE_PATH")
 
     def execute(self, context):
-        bpy.context.scene.COBieProperties.cobie_json_file = self.filepath
+        context.scene.COBieProperties.cobie_json_file = self.filepath
         return {"FINISHED"}
 
     def invoke(self, context, event):
@@ -43,7 +45,7 @@ class ExecuteIfcCobie(bpy.types.Operator):
 
     def execute(self, context):
         from cobie import IfcCobieParser
-        props = bpy.context.scene.COBieProperties
+        props = context.scene.COBieProperties
         
         output_dir = os.path.dirname(props.cobie_ifc_file)
         

src/blenderbim/blenderbim/bim/module/constraint/operator.py

@@ -1,17 +1,16 @@
 import bpy
 import json
-import blenderbim.bim.module.constraint.add_objective as add_objective
-import blenderbim.bim.module.constraint.edit_objective as edit_objective
-import blenderbim.bim.module.constraint.remove_constraint as remove_constraint
-import blenderbim.bim.module.constraint.assign_constraint as assign_constraint
-import blenderbim.bim.module.constraint.unassign_constraint as unassign_constraint
+import ifcopenshell.api
+import ifcopenshell.util.attribute
+import blenderbim.bim.helper
 from blenderbim.bim.ifc import IfcStore
-from blenderbim.bim.module.constraint.data import Data
+from ifcopenshell.api.constraint.data import Data
 
 
 class LoadObjectives(bpy.types.Operator):
     bl_idname = "bim.load_objectives"
     bl_label = "Load Objectives"
+    bl_options = {"REGISTER", "UNDO"}
 
     def execute(self, context):
         props = context.scene.BIMConstraintProperties
@@ -29,6 +28,7 @@ class LoadObjectives(bpy.types.Operator):
 class DisableConstraintEditingUI(bpy.types.Operator):
     bl_idname = "bim.disable_constraint_editing_ui"
     bl_label = "Disable Constraint Editing UI"
+    bl_options = {"REGISTER", "UNDO"}
 
     def execute(self, context):
         context.scene.BIMConstraintProperties.is_editing = ""
@@ -39,6 +39,7 @@ class DisableConstraintEditingUI(bpy.types.Operator):
 class EnableEditingConstraint(bpy.types.Operator):
     bl_idname = "bim.enable_editing_constraint"
     bl_label = "Enable Editing Constraint"
+    bl_options = {"REGISTER", "UNDO"}
     constraint: bpy.props.IntProperty()
 
     def execute(self, context):
@@ -49,22 +50,7 @@ class EnableEditingConstraint(bpy.types.Operator):
         if props.is_editing == "IfcObjective":
             data = Data.objectives[self.constraint]
 
-        for attribute in IfcStore.get_schema().declaration_by_name(props.is_editing).all_attributes():
-            data_type = str(attribute.type_of_attribute)
-            if "<entity" in data_type:
-                continue
-            new = props.constraint_attributes.add()
-            new.name = attribute.name()
-            new.is_null = data[attribute.name()] is None
-            new.is_optional = attribute.optional()
-            if "<string>" in data_type:
-                new.string_value = "" if new.is_null else data[attribute.name()]
-                new.data_type = "string"
-            elif "<enumeration" in data_type:
-                new.enum_items = json.dumps(attribute.type_of_attribute().declared_type().enumeration_items())
-                new.data_type = "enum"
-                if data[attribute.name()]:
-                    new.enum_value = data[attribute.name()]
+        blenderbim.bim.helper.import_attributes(props.is_editing, props.constraint_attributes, data)
         props.active_constraint_id = self.constraint
         return {"FINISHED"}
 
@@ -72,6 +58,7 @@ class EnableEditingConstraint(bpy.types.Operator):
 class DisableEditingConstraint(bpy.types.Operator):
     bl_idname = "bim.disable_editing_constraint"
     bl_label = "Disable Editing Constraint"
+    bl_options = {"REGISTER", "UNDO"}
 
     def execute(self, context):
         context.scene.BIMConstraintProperties.active_constraint_id = 0
@@ -81,10 +68,14 @@ class DisableEditingConstraint(bpy.types.Operator):
 class AddObjective(bpy.types.Operator):
     bl_idname = "bim.add_objective"
     bl_label = "Add Objective"
+    bl_options = {"REGISTER", "UNDO"}
 
     def execute(self, context):
-        result = add_objective.Usecase(IfcStore.get_file()).execute()
-        Data.load()
+        return IfcStore.execute_ifc_operator(self, context)
+
+    def _execute(self, context):
+        result = ifcopenshell.api.run("constraint.add_objective", IfcStore.get_file())
+        Data.load(IfcStore.get_file())
         bpy.ops.bim.load_objectives()
         bpy.ops.bim.enable_editing_constraint(constraint=result.id())
         return {"FINISHED"}
@@ -93,8 +84,12 @@ class AddObjective(bpy.types.Operator):
 class EditObjective(bpy.types.Operator):
     bl_idname = "bim.edit_objective"
     bl_label = "Edit Objective"
+    bl_options = {"REGISTER", "UNDO"}
 
     def execute(self, context):
+        return IfcStore.execute_ifc_operator(self, context)
+
+    def _execute(self, context):
         props = context.scene.BIMConstraintProperties
         attributes = {}
         for attribute in props.constraint_attributes:
@@ -105,10 +100,12 @@ class EditObjective(bpy.types.Operator):
             else:
                 attributes[attribute.name] = attribute.string_value
         self.file = IfcStore.get_file()
-        edit_objective.Usecase(
-            self.file, {"objective": self.file.by_id(props.active_constraint_id), "attributes": attributes}
-        ).execute()
-        Data.load()
+        ifcopenshell.api.run(
+            "constraint.edit_objective",
+            self.file,
+            **{"objective": self.file.by_id(props.active_constraint_id), "attributes": attributes}
+        )
+        Data.load(IfcStore.get_file())
         bpy.ops.bim.load_objectives()
         return {"FINISHED"}
 
@@ -116,13 +113,19 @@ class EditObjective(bpy.types.Operator):
 class RemoveConstraint(bpy.types.Operator):
     bl_idname = "bim.remove_constraint"
     bl_label = "Remove Constraint"
+    bl_options = {"REGISTER", "UNDO"}
     constraint: bpy.props.IntProperty()
 
     def execute(self, context):
+        return IfcStore.execute_ifc_operator(self, context)
+
+    def _execute(self, context):
         props = context.scene.BIMConstraintProperties
         self.file = IfcStore.get_file()
-        remove_constraint.Usecase(self.file, {"constraint": self.file.by_id(self.constraint)}).execute()
-        Data.load()
+        ifcopenshell.api.run(
+            "constraint.remove_constraint", self.file, **{"constraint": self.file.by_id(self.constraint)}
+        )
+        Data.load(IfcStore.get_file())
         if props.is_editing == "IfcObjective":
             bpy.ops.bim.load_objectives()
         return {"FINISHED"}
@@ -131,6 +134,7 @@ class RemoveConstraint(bpy.types.Operator):
 class EnableAssigningConstraint(bpy.types.Operator):
     bl_idname = "bim.enable_assigning_constraint"
     bl_label = "Enable Assigning Constraint"
+    bl_options = {"REGISTER", "UNDO"}
     obj: bpy.props.StringProperty()
 
     def execute(self, context):
@@ -145,6 +149,7 @@ class EnableAssigningConstraint(bpy.types.Operator):
 class DisableAssigningConstraint(bpy.types.Operator):
     bl_idname = "bim.disable_assigning_constraint"
     bl_label = "Disable Assigning Constraint"
+    bl_options = {"REGISTER", "UNDO"}
     obj: bpy.props.StringProperty()
 
     def execute(self, context):
@@ -157,32 +162,48 @@ class DisableAssigningConstraint(bpy.types.Operator):
 class AssignConstraint(bpy.types.Operator):
     bl_idname = "bim.assign_constraint"
     bl_label = "Assign Constraint"
+    bl_options = {"REGISTER", "UNDO"}
     obj: bpy.props.StringProperty()
     constraint: bpy.props.IntProperty()
 
     def execute(self, context):
+        return IfcStore.execute_ifc_operator(self, context)
+
+    def _execute(self, context):
         obj = bpy.data.objects.get(self.obj) if self.obj else context.active_object
         self.file = IfcStore.get_file()
-        assign_constraint.Usecase(self.file, {
-            "product": self.file.by_id(obj.BIMObjectProperties.ifc_definition_id),
-            "constraint": self.file.by_id(self.constraint)
-        }).execute()
-        Data.load(obj.BIMObjectProperties.ifc_definition_id)
+        ifcopenshell.api.run(
+            "constraint.assign_constraint",
+            self.file,
+            **{
+                "product": self.file.by_id(obj.BIMObjectProperties.ifc_definition_id),
+                "constraint": self.file.by_id(self.constraint),
+            }
+        )
+        Data.load(IfcStore.get_file(), obj.BIMObjectProperties.ifc_definition_id)
         return {"FINISHED"}
 
 
 class UnassignConstraint(bpy.types.Operator):
     bl_idname = "bim.unassign_constraint"
     bl_label = "Unassign Constraint"
+    bl_options = {"REGISTER", "UNDO"}
     obj: bpy.props.StringProperty()
     constraint: bpy.props.IntProperty()
 
     def execute(self, context):
+        return IfcStore.execute_ifc_operator(self, context)
+
+    def _execute(self, context):
         obj = bpy.data.objects.get(self.obj) if self.obj else context.active_object
         self.file = IfcStore.get_file()
-        unassign_constraint.Usecase(self.file, {
-            "product": self.file.by_id(obj.BIMObjectProperties.ifc_definition_id),
-            "constraint": self.file.by_id(self.constraint)
-        }).execute()
-        Data.load(obj.BIMObjectProperties.ifc_definition_id)
+        ifcopenshell.api.run(
+            "constraint.unassign_constraint",
+            self.file,
+            **{
+                "product": self.file.by_id(obj.BIMObjectProperties.ifc_definition_id),
+                "constraint": self.file.by_id(self.constraint),
+            }
+        )
+        Data.load(IfcStore.get_file(), obj.BIMObjectProperties.ifc_definition_id)
         return {"FINISHED"}