Revert "Bump IOS" #6909

This reverts commit a4dd1c3463.
Fix bug in IfcTester thanks to Sayan where parsing XML text using ET would expand namespaces and therefore break namespaces during decode
2026-08-28 07:49:59 +00:00 · 2025-07-16 16:36:16 +05:00 · 2025-07-16 18:14:45 +10:00 · 2025-07-16 12:31:10 +05:00 · 2025-07-16 11:22:45 +05:00 · 2025-07-15 18:01:57 +05:00
1114 changed files with 51572 additions and 16656 deletions
@@ -1,20 +0,0 @@
---
-name: Bug report
-about: Create a report to help us improve
-title: ''
-labels: ''
-assignees: ''
-
---
-
-Replace this text describing what problem occurred and what you expected to happen instead.
-
-1. To reproduce this, open file '...'
-2. Click on '....'
-3. See error
-
-**Attachments**
-If applicable, add screenshots to help explain your problem. Please also drag-drop any files necessary to show the error (rename the file extension from .ifc to .txt to upload). Private files can be uploaded to https://ifcopenshell.org/upload.html - only viewed by core developers and will be deleted afterwards.
-
-**Debug information**
-If this is in Bonsai, paste the output from the Copy Debug Information option in Bonsai. It can be found under Quality and Coordination -> Quality Control -> Debug. If this is a general software issue, if relevant include details about IfcOpenShell version, operating system, Python version, etc.
@@ -0,0 +1,23 @@
+name: Bug Report
+description: Crashes, error messages, and broken features
+type: bug
+body:
+- type: textarea
+  attributes:
+    label: Bug Description
+    placeholder: |
+      Describe what problem occurred and what you expected to happen instead.
+  
+      1. To reproduce this, open file '...'
+      2. Click on '....'
+      3. See error
+- type: textarea
+  attributes:
+    label: Attachments
+    description: "Private files can be uploaded to https://ifcopenshell.org/upload.html - only viewed by core developers and will be deleted afterwards. Please submit your report first then upload private files afterwards."
+    placeholder: "If applicable, add screenshots to help explain your problem. Please also drag-drop any files necessary to show the error (rename the file extension from .ifc to .txt to upload)."
+- type: textarea
+  attributes:
+    label: Debug and Error Output
+    description: "If this is in Bonsai, paste the output from the Copy Debug Information option in Bonsai. It can be found under Quality and Coordination -> Quality Control -> Debug. If this is a general software issue, if relevant include details about IfcOpenShell version, operating system, Python version, etc."
+    render: yes
@@ -0,0 +1,8 @@
+blank_issues_enabled: false
+contact_links:
+  - name: Community Forums
+    url: https://community.osarch.org/
+    about: Have a question? Want to discuss an idea? Try the OSArch forums instead.
+  - name: Live Chat
+    url: https://osarch.org/chat
+    about: Have a really confusing issue? Want real-time support?
@@ -1,10 +0,0 @@
---
-name: Feature request
-about: Suggest an idea for this project
-title: ''
-labels: ''
-assignees: ''
-
---
-
-Replace this text and describe a feature you'd like us to add. If it's not obvious, explain why this feature is awesome. Note that feature requests must be specific and measurable.
@@ -0,0 +1,8 @@
+name: Feature Request
+description: Suggest a new feature or improvement
+type: Feature
+body:
+- type: textarea
+  attributes:
+    label: Feature Description
+    placeholder: "Describe a feature you'd like us to add, or a change to the user interface, design, or workflow for usability. If it's not obvious, explain why this feature is awesome. Note that feature requests must be specific and measurable."
@@ -44,7 +44,11 @@ jobs:
          brew update
          brew install git bison autoconf automake libffi cmake findutils
          echo "$(brew --prefix findutils)/libexec/gnubin" >> $GITHUB_PATH
-        
+
+      - name: Install aws cli
+        run: |
+          python -m pip install awscli
+
      - name: Unpack Dependencies
        run: |
          install_root=$(find ./build -maxdepth 4 -name install)
@@ -117,20 +121,6 @@ jobs:
          aws-secret-access-key: ${{ secrets.AWS_UPLOAD_SECRET_ACCESS_KEY }}
          aws-region: us-east-1

-      - name: Overwrite aws cli
-        run: |
-          # Error: The `brew link` step did not complete successfully
-          # The formula built, but is not symlinked into /usr/local
-          # Could not symlink bin/idle3
-          # Target /usr/local/bin/idle3
-          # already exists. You may want to remove it:
-          #   rm '/usr/local/bin/idle3'
-          #
-          # To force the link and overwrite all conflicting files:
-          #   brew link --overwrite python@3.13
-          # https://github.com/rust-lang/rustup/pull/3989/files
-          brew install --overwrite awscli | true
-
      - name: Upload .zip archives to S3
        run: |
          aws s3 cp ~/output s3://ifcopenshell-builds/ --recursive
@@ -19,7 +19,7 @@ jobs:
        with:
          submodules: recursive
          repository: pyodide/pyodide
-          ref: '0.26.4'
+          ref: '0.28.0a3'
          token: ${{ secrets.BUILD_REPO_TOKEN }}
          path: pyodide

@@ -29,18 +29,18 @@ jobs:
          sed -i s/0.8.0/$VERSION/g IfcOpenShell/pyodide/meta.yaml
          sed -i s/0.8.0/$VERSION/g IfcOpenShell/pyodide/setup.py
          echo '#!/usr/bin/bash' > script.sh
-          echo 'cd pyodide' > script.sh
-          echo 'make && pip install ./pyodide-build' >> script.sh
+          echo 'cd pyodide' >> script.sh
+          echo 'make' >> script.sh
          echo 'cd ..' >> script.sh
          echo 'mkdir -p packages/ifcopenshell' >> script.sh
          echo 'cp IfcOpenShell/pyodide/meta.yaml packages/ifcopenshell' >> script.sh
          echo 'PYODIDE_ROOT=/src/pyodide \' >> script.sh
-          echo 'PATH=/src/pyodide/emsdk/emsdk:/src/pyodide/emsdk/emsdk/node/20.18.0_64bit/bin:/src/pyodide/emsdk/emsdk/upstream/emscripten:$PATH \' >> script.sh
+          echo 'PATH=/src/pyodide/emsdk/emsdk:/src/pyodide/emsdk/emsdk/node/22.16.0_64bit/bin:/src/pyodide/emsdk/emsdk/upstream/emscripten:$PATH \' >> script.sh
          echo 'pyodide build-recipes ifcopenshell --install' >> script.sh
          chmod +x script.sh
          sed -i s/--tty// pyodide/run_docker
          pyodide/run_docker ./script.sh
-          mv dist/ifcopenshell-$VERSION-py3-none-any.whl dist/ifcopenshell-$VERSION+${GITHUB_SHA:0:7}-cp312-cp312-emscripten_3_1_58_wasm32.whl
+          mv dist/ifcopenshell-$VERSION-py3-none-any.whl dist/ifcopenshell-$VERSION+${GITHUB_SHA:0:7}-cp313-cp313-emscripten_4_0_9_wasm32.whl

      - name: Configure AWS credentials
        uses: aws-actions/configure-aws-credentials@v4
@@ -16,7 +16,7 @@ jobs:
                         bzip2 patch mesa-libGL-devel libffi-devel fontconfig-devel      \
                         sqlite-devel bzip2-devel zlib-devel openssl-devel xz-devel      \
                         readline-devel ncurses-devel libffi-devel libuuid-devel git-lfs \
-                         findutils
+                         findutils xz
          git config --global --add safe.directory '*'

      - name: Install aws cli
@@ -16,7 +16,7 @@ jobs:
                         bzip2 patch mesa-libGL-devel libffi-devel fontconfig-devel      \
                         sqlite-devel bzip2-devel zlib-devel openssl-devel xz-devel      \
                         readline-devel ncurses-devel libffi-devel libuuid-devel git-lfs \
-                         findutils
+                         findutils xz
          git config --global --add safe.directory '*'

      - name: Install aws cli
@@ -5,7 +5,7 @@ on:

 jobs:
  build_ifcopenshell:
-    runs-on: windows-2019
+    runs-on: windows-2022
    strategy:
      fail-fast: false
      matrix:
@@ -21,7 +21,7 @@ jobs:
        uses: actions/checkout@v3
        with:
          repository: IfcOpenShell/build-outputs
-          path: _deps-vs2019-x64-installed
+          path: _deps-vs2022-x64-installed
          ref: windows-${{ matrix.arch }}
          lfs: true
          token: ${{ secrets.BUILD_REPO_TOKEN }}
@@ -40,7 +40,7 @@ jobs:

      - name: Unpack Dependencies
        run: |
-          cd _deps-vs2019-x64-installed
+          cd _deps-vs2022-x64-installed
          Get-ChildItem -Path . -Filter 'cache-*.zip' | ForEach-Object {
            7z x $_.FullName
          }
@@ -53,17 +53,17 @@ jobs:
          for /f "tokens=1,2,3 delims=." %%a in ("%PYTHON_VERSION%") do ( 
              set PY_VER_MAJOR_MINOR=%%a%%b
          )
-          call "C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Auxiliary\Build\vcvars64.bat"
+          call "C:\Program Files\Microsoft Visual Studio\2022\Enterprise\VC\Auxiliary\Build\vcvars64.bat"
          SET IFCOS_INSTALL_PYTHON=FALSE
          cd win
-          echo y | call build-deps.cmd vs2019-x64 Release
+          echo y | call build-deps.cmd vs2022-x64 Release
          SET PYTHONHOME=C:\Python\${{ matrix.python }}
-          call run-cmake.bat vs2019-x64 -DENABLE_BUILD_OPTIMIZATIONS=On -DGLTF_SUPPORT=ON -DADD_COMMIT_SHA=ON -DVERSION_OVERRIDE=ON
-          call install-ifcopenshell.bat vs2019-x64 Release
+          call run-cmake.bat vs2022-x64 -DENABLE_BUILD_OPTIMIZATIONS=On -DGLTF_SUPPORT=ON -DADD_COMMIT_SHA=ON -DVERSION_OVERRIDE=ON
+          call install-ifcopenshell.bat vs2022-x64 Release

      - name: Pack Dependencies
        run: |
-          cd _deps-vs2019-x64-installed
+          cd _deps-vs2022-x64-installed
          Get-ChildItem -Path . -Directory | ForEach-Object {
            $cacheFile = "cache-$($_.Name).zip"
            echo $cacheFile
@@ -74,7 +74,7 @@ jobs:

      - name: Commit and Push Changes to Build Repository
        run: |
-          cd _deps-vs2019-x64-installed
+          cd _deps-vs2022-x64-installed
          git config user.name "IfcOpenBot"
          git config user.email "ifcopenbot@ifcopenshell.org"
          git add *.zip
@@ -90,7 +90,7 @@ jobs:

          if ("${{ matrix.python }}" -eq "3.9.11") {
            # only for the first python version the executables are assembled for upload
-            cd _installed-vs2019-x64/bin
+            cd _installed-vs2022-x64/bin
            Get-ChildItem -Path . | ForEach-Object {
              echo $_
              $exe = $_.Name
@@ -118,5 +118,13 @@ jobs:
          aws-region: us-east-1

      - name: Upload .zip Archives to S3
+        env:
+          AWS_DEBUG: 1
+          AWS_RETRY_MODE: standard
+          AWS_MAX_ATTEMPTS: 3
        run: |
-          aws s3 cp $env:USERPROFILE\output s3://ifcopenshell-builds/ --recursive
+          dir "$env:USERPROFILE\output"
+          foreach ($zip in Get-ChildItem -Path "$env:USERPROFILE\output" -Filter *.zip) {
+              aws s3 cp "$($zip.FullName)" s3://ifcopenshell-builds/ --debug
+              Start-Sleep -Seconds 5
+          }
@@ -4,9 +4,6 @@ on:
  push:
  pull_request:

-env:
-  PYTHON_VERSION: "3.12"
-
 jobs:
  lint-formatting:
    runs-on: ubuntu-latest
@@ -17,57 +14,51 @@ jobs:
      - name: Action - install python
        uses: actions/setup-python@v5.3.0
        with:
-          python-version: "${{ env.PYTHON_VERSION }}"
+          python-version: "3.9"

-      - name: Step 1 - install dependencies
-        shell: bash
+      - name: Action - install python
+        uses: actions/setup-python@v5.3.0
+        with:
+          python-version: "3.11"
+
+      - name: Install dependencies
        run: |
-          python3 -m pip install --upgrade pip
-          python3 -m pip install 'black>=24.10.0'
+          curl -LsSf https://astral.sh/uv/install.sh | sh
+          uv tool install ruff
+          uv tool install black

-      # NOTE: This would suffice, however it is less informative in terms of the 3 possible outcomes
-      # - name: QA Step - check linting
-      #   shell: bash
-      #   id: linting
-      #   run: |
-      #     python3 -m black .
-
-      # QA STEP
-      - name: QA Step - check linting
-        shell: bash
-        id: linting
+      # black doesn't catch all syntax errors, so we check them explicitly.
+      - name: Check syntax errors
+        id: syntax-errors
        run: |
-          python3 -m black --check . \
-          && exit 0 \
-          || (echo "exit_code=$?" >> "$GITHUB_OUTPUT" && exit 1);
+          ERROR=0
+          python3.9 -W error -m compileall -q src/ifcopenshell-python || ERROR=1
+          python3.11 -W error -m compileall -q src/bonsai || ERROR=1
+          exit $ERROR
        continue-on-error: true

-      # OUTCOME 1 of QA STEP
-      - name: QA Step - no linting errors
-        if: steps.linting.outcome == 'success'
-        shell: bash
-        run: |-
-          echo "::notice::QA step linting succeeded"
-          exit 0;
+      - name: Black formatter
+        id: black
+        run: |
+          uvx black --diff --check .
+        continue-on-error: true

-      # OUTCOME 2i of QA STEP
-      - name: QA Step - unprettified code with no syntax errors
-        if: steps.linting.outputs.exit_code == 1
-        shell: bash
-        run: |-
-          echo "::group::QA step succeeded with warnings"
-          echo "::warning::one or more files contains unformatted code but no syntax errors";
-          echo "::notice::please run the linter before pushing!";
-          echo "::endgroup::"
-          exit 0;
+      - name: Ruff check
+        id: ruff
+        run: |
+          uvx ruff check
+        continue-on-error: true

-      # OUTCOME 2ii of QA STEP
-      - name: QA Step - code contains syntax errors
-        if: steps.linting.outputs.exit_code == 123
-        shell: bash
-        run: |-
-          echo "::group::QA step failed"
-          echo "::error::one or more files contains syntax errors";
-          echo "::notice::please run the linter and fix syntax errors before pushing!";
-          echo "::endgroup::"
-          exit 1;
+      - name: Final check
+        run: |
+          ERROR=0
+          if [ "${{ steps.syntax-errors.outcome }}" != "success" ]; then
+            echo "::error::Syntax errors check failed, see 'syntax-errors' step for the details." && ERROR=1
+          fi
+          if [ "${{ steps.black.outcome }}" != "success" ]; then
+            echo "::error::Black formatting check failed, see 'black' step for the details." && ERROR=1
+          fi
+          if [ "${{ steps.ruff.outcome }}" != "success" ]; then
+            echo "::error::Ruff check failed, see 'ruff' step for the details." && ERROR=1
+          fi
+          exit $ERROR
@@ -96,7 +96,7 @@ jobs:
        uses: actions/checkout@v2
        with:
          repository: IfcOpenShell/bonsai_unstable_repo
-          token: ${{ secrets.IOS_TO_BLENDER_REPO }}
+          token: ${{ secrets.IFCOPENBOT_TOKEN }}
          path: bonsai_unstable_repo

      - name: Download Blender and run critical tests
@@ -104,7 +104,7 @@ jobs:
          # Ensure Bonsai and ifcsverchok enable/disable works before uploading to extensions repo.

          # Download Blender.
-          wget -q -O blender.tar.xz https://download.blender.org/release/Blender4.3/blender-4.3.2-linux-x64.tar.xz
+          wget -q -O blender.tar.xz https://download.blender.org/release/Blender4.5/blender-4.5.0-linux-x64.tar.xz
          tar -xf blender.tar.xz

          # Setup Blender.
@@ -175,6 +175,7 @@ jobs:

          cd IfcOpenShell/src/bonsai
          pip install pytest-blender
+          pip install pytest-bdd
          blender --background --python scripts/setup_pytest.py
          blender --python-expr "import bonsai; print(bonsai.bbim_semver); import ifcopenshell; print(ifcopenshell.version)" --background
          make test
@@ -35,11 +35,11 @@ jobs:

      - name: Version + date str
        id: verdate
-        run: echo "verdate='${{ steps.version.outputs.version }}alpha${{ steps.date.outputs.date }}'" >> $GITHUB_OUTPUT
+        run: echo "verdate=${{ steps.version.outputs.version }}alpha${{ steps.date.outputs.date }}" >> $GITHUB_OUTPUT

      
  test:
-    name: ${{ matrix.platform.distver }}-${{ matrix.pyver.name }}-${{ matrix.variant }}
+    name: ${{ matrix.platform.distver }}-${{ matrix.pyver.name }}
    needs: activate
    runs-on: ${{ matrix.platform.distver }}
    defaults:
@@ -48,57 +48,67 @@ jobs:
    strategy:
      fail-fast: false
      matrix:
-        variant: [novtk, all]
        pyver: [
-#          { name: py311, distver: '3.11'},
          { name: py312, distver: '3.12'}
        ]
        platform: [
          { name: win, distver: windows-latest, pkg_dir: 'win-64' },
          { name: linux, distver: ubuntu-latest, pkg_dir: 'linux-64' },
-          { name: macOS, distver: macos-latest, pkg_dir: 'osx-64' }
+          { name: macOS-arm, distver: macos-latest, pkg_dir: 'osx-arm64' },
+          { name: macOS-x86, distver: macos-13, pkg_dir: 'osx-64' }
        ]
    steps:
-      - name: Set up swap space
+      - name: Set Swap Space
        if: runner.os == 'Linux'
-        uses: pierotofy/set-swap-space@v1.0
+        uses: pierotofy/set-swap-space@master
        with:
          swap-size-gb: 10
-
+      
+      - name: set ARTIFACTS ENV vars
+        shell: bash
+        run: |
+          pwd
+          if [[ "$RUNNER_OS" == "Windows" ]]; then
+            echo "ARTIFACTS_DIR=D:/a/artifacts" >> $GITHUB_ENV
+          elif [[ "$RUNNER_OS" == "macOS" ]]; then
+            echo "ARTIFACTS_DIR=/Users/runner/work/artifacts" >> $GITHUB_ENV
+          elif [[ "$RUNNER_OS" == "Linux" ]]; then
+            echo "ARTIFACTS_DIR=/home/runner/work/artifacts" >> $GITHUB_ENV
+          fi
+      
      - uses: actions/checkout@v4
        with:
          submodules: recursive

      - name: Download and extract MacOSX SDK
-        if: ${{ runner.os == 'macOS' }}
+        if: ${{ matrix.platform.name == 'macOS-x86' }}
        run: |
          curl -L https://github.com/phracker/MacOSX-SDKs/releases/download/11.3/MacOSX10.13.sdk.tar.xz | tar -xvJf - -C /Users/runner/work/

-      - uses: mamba-org/setup-micromamba@v1 # https://github.com/mamba-org/setup-micromamba
+      - uses: mamba-org/setup-micromamba@v2 # https://github.com/mamba-org/setup-micromamba
        with:
          environment-name: test-env
          create-args: >-
-            python=3.11
+            python=3.12
            anaconda-client
-            boa
+            rattler-build

      - name: create conda package dist dir
        run: |
-          mkdir -p ${{ github.workspace }}/dist
+          mkdir -p ${{ env.ARTIFACTS_DIR }}

      - name: build & test ifcopenshell
        run: |
-          conda mambabuild . --python ${{ matrix.pyver.distver }} --no-remove-work-dir --output-folder '${{ github.workspace }}/dist' --variants='{variant: ${{ matrix.variant }}}'
-        working-directory: ./conda
+          rattler-build  build -r conda/recipe.yaml --output-dir '${{ env.ARTIFACTS_DIR }}'
        env:
          VERSION_OVERRIDE: ${{ needs.activate.outputs.verdate }}

      - name: upload to anaconda
        if: ${{ matrix.platform.name == 'win' }}
        run: |
-          anaconda -t ${{ secrets.ANACONDA_TOKEN }} upload --force --user ifcopenshell '${{ github.workspace }}/dist/${{ matrix.platform.pkg_dir }}/*.tar.bz2'
+          anaconda -t ${{ secrets.ANACONDA_TOKEN }} upload --force --user ifcopenshell '${{ env.ARTIFACTS_DIR }}/${{ matrix.platform.pkg_dir }}/*.conda'

      - name: upload to anaconda
        if: ${{ matrix.platform.name != 'win' }}
        run: |
-          anaconda -t ${{ secrets.ANACONDA_TOKEN }} upload --force --user ifcopenshell ${{ github.workspace }}/dist/${{ matrix.platform.pkg_dir }}/*.tar.bz2
+          anaconda -t ${{ secrets.ANACONDA_TOKEN }} upload --force --user ifcopenshell ${{ env.ARTIFACTS_DIR }}/${{ matrix.platform.pkg_dir }}/*.conda
@@ -9,7 +9,7 @@ on:
 jobs:

  activate:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
    if: |
      github.repository == 'IfcOpenShell/IfcOpenShell' &&
      !startsWith(github.event.head_commit.message, 'Release ') &&
@@ -18,7 +18,7 @@ jobs:
    - run: echo ok go

  build:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
    needs: activate
    steps:
    - uses: actions/checkout@v2
@@ -35,7 +35,7 @@ jobs:

    -
      name: ccache
-      uses: hendrikmuhs/ccache-action@v1
+      uses: hendrikmuhs/ccache-action@v1.2

    - 
      name: Build ifcopenshell
@@ -44,6 +44,7 @@ jobs:
        cmake \
         -DCMAKE_C_COMPILER_LAUNCHER=ccache \
         -DCMAKE_CXX_COMPILER_LAUNCHER=ccache \
+         -DCMAKE_CXX_STANDARD=17 \
         -DCMAKE_INSTALL_PREFIX=$PWD/install/ \
         -DCMAKE_BUILD_TYPE=Release \
         -DCMAKE_PREFIX_PATH=/usr \
@@ -75,7 +76,7 @@ jobs:
        make package
      working-directory: build
    - name: Upload 
-      uses: actions/upload-artifact@v2
+      uses: actions/upload-artifact@v4
      with:
        # Artifact name
        name: ifcos-artifacts
@@ -83,7 +84,7 @@ jobs:
        path: build/assets/Ifc*

  deliver:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
    needs: build
    name: Docker Build, Tag, Push

@@ -118,6 +119,6 @@ jobs:
        repository: aecgeeks/ifcopenshell
        # Since the dispatch is set to `tag`, `github.ref_name` should evaluate to the pushed tag
        # On a workflow dispatch, `ref_name` will take on the value from the dispatch payload
-        tags: aecgeeks/ifcopenshell:${{ github.ref_name }}${{ github.ref_name == github.event.repository.default_branch && ',aecgeeks/ifcopenshell:latest' }}
+        tags: aecgeeks/ifcopenshell:${{ github.ref_name }}${{ github.ref_name == github.event.repository.default_branch && ',aecgeeks/ifcopenshell:22.04' }}
        file: ./Dockerfile
        push: true
@@ -44,6 +44,8 @@ jobs:
          }
    steps:
      - uses: actions/checkout@v2
+        with:
+          submodules: recursive
      - uses: actions/setup-python@v2 # https://github.com/actions/setup-python
        with:
          python-version: '3.11' # Version range or exact version of a Python version to use, using SemVer's version range syntax
@@ -39,6 +39,8 @@ jobs:
          }
    steps:
      - uses: actions/checkout@v2
+        with:
+          submodules: recursive
      - uses: actions/setup-python@v2 # https://github.com/actions/setup-python
        with:
          python-version: '3.11' # Version range or exact version of a Python version to use, using SemVer's version range syntax
@@ -82,6 +82,7 @@ jobs:
          cmake \
               -DCMAKE_C_COMPILER_LAUNCHER=ccache \
               -DCMAKE_CXX_COMPILER_LAUNCHER=ccache \
+               -DCMAKE_CXX_STANDARD=17 \
               -DCMAKE_BUILD_TYPE=Release \
               -DCMAKE_PREFIX_PATH=/usr \
               -DCMAKE_SYSTEM_PREFIX_PATH=/usr \
@@ -127,12 +128,21 @@ jobs:
          cd ../src/ifcopenshell-python
          mv ifcopenshell ifcopenshell-local # Force testing on installed module
          pip install -e ../ifcpatch --no-deps # Needed for sql.py tests.
-          make test
-          cd ../bcf && make test
+          ERROR=0
+          make test || ERROR=1
+          cd ../bcf && make test || ERROR=1
          pip install requests
-          cd ../bsdd && make test
+          cd ../bsdd && make test || ERROR=1
          pip install deepdiff
-          cd ../ifcdiff && make test
-          cd ../ifcpatch && make test
+          cd ../ifcdiff && make test || ERROR=1
+          cd ../ifcpatch && make test || ERROR=1
          pip install -e ../ifctester --no-deps
-          cd ../ifctester && make test
+          cd ../ifctester && make test || ERROR=1
+          # Run mathutils related tests at the end to ensure no other code is relying on mathutils.
+          cd ../ifcopenshell-python
+          pip install mathutils
+          make test-mathutils || ERROR=1
+          if [ $ERROR -ne 0 ]; then
+            echo "One or more tests failed";
+            exit 1;
+          fi
@@ -9,6 +9,8 @@ on:
    paths:
      - 'src/pyodide/**'
      - '.github/workflows/publish-pyodide-demo-app.yml'
+    branches:
+      - v0.8.0

 jobs:
  activate:
@@ -4,6 +4,7 @@ on:
  push:
    tags:
      - 'v[0-9].[0-9].[0-9]*'
+  workflow_dispatch:

 jobs:
  activate:
@@ -45,6 +46,7 @@ jobs:
          mkdir build && cd build
          cmake \
           -DCMAKE_INSTALL_PREFIX=$PWD/install/ \
+           -DCMAKE_CXX_STANDARD=17 \
           -DCMAKE_BUILD_TYPE=Release \
           -DCMAKE_PREFIX_PATH=/usr \
           -DCMAKE_SYSTEM_PREFIX_PATH=/usr \
@@ -86,12 +86,13 @@ src/bonsai/bonsai/bim/data/build/
 src/bonsai/bonsai/bim/data/gantt/index.html
 src/bonsai/bonsai/bim/data/gantt/jsgantt.js
 src/bonsai/bonsai/bim/data/gantt/jsgantt.css
+src/bonsai/bonsai/bim/data/webui/static/js/jquery.min.js

 src/bonsai/drawings
 src/bonsai/layouts

 # ifcopenshell swig and compiled files
-src/ifcopenshell-python/ifcopenshell/_ifcopenshell_wrapper.so
+src/ifcopenshell-python/ifcopenshell/_ifcopenshell_wrapper*.so
 src/ifcopenshell-python/ifcopenshell/ifcopenshell_wrapper.py

 # apple
@@ -106,4 +107,4 @@ src/ifcopenshell-python/ifcopenshell/ifcopenshell_wrapper.py
 src/bonsai/bonsai/bim/schema/Brick.ttl

 bonsaiDecoratorForLoads.code-workspace
-dev_environment.bat
+
@@ -1 +1 @@
-0.8.2
+0.8.4
@@ -18,7 +18,12 @@
 ################################################################################

 cmake_minimum_required(VERSION 3.21)
-set(CMAKE_CXX_STANDARD 17)
+if (NOT DEFINED CMAKE_CXX_STANDARD)
+    set(CMAKE_CXX_STANDARD 17)
+endif()
+if (CMAKE_CXX_STANDARD LESS 17)
+    message(FATAL_ERROR "C++17 or newer is required.")
+endif()
 set(CMAKE_CXX_STANDARD_REQUIRED ON) # not necessary, but encouraged
 set(CMAKE_EXPORT_COMPILE_COMMANDS ON)

@@ -1289,6 +1294,8 @@ endif()
 list(APPEND CPACK_SOURCE_IGNORE_FILES
    "/\\\\.git"
    "/build/"
+    "/.pytest_cache/"
+    "/__pycache__/"
 )
 set(CPACK_SOURCE_INSTALLED_DIRECTORIES "${CMAKE_SOURCE_DIR}/..;/")
 set(CPACK_PACKAGE_NAME "${PROJECT_NAME}-${PROJECT_VERSION_MAJOR}.${PROJECT_VERSION_MINOR}.${PROJECT_VERSION_PATCH}${EXTRA_VERSION}")
@@ -9,6 +9,7 @@ set LIBXML2="%LIBRARY_PREFIX%/lib/libxml2.lib"
 cmake -G "Ninja" ^
 -D SCHEMA_VERSIONS="2x3;4;4x1;4x3_add2" ^
 -D CMAKE_BUILD_TYPE:STRING=Release ^
+ -D CMAKE_CXX_STANDARD=17 ^
 -D CMAKE_INSTALL_PREFIX:FILEPATH="%LIBRARY_PREFIX%" ^
 -D CMAKE_PREFIX_PATH:FILEPATH="%LIBRARY_PREFIX%" ^
 -D CMAKE_SYSTEM_PREFIX_PATH:FILEPATH="%LIBRARY_PREFIX%" ^
@@ -49,3 +50,7 @@ if errorlevel 1 exit 1
 ninja install -j 1

 if errorlevel 1 exit 1
+
+python %RECIPE_DIR%/update_version_init.py %PKG_VERSION% %SP_DIR%/ifcopenshell/__init__.py
+
+if errorlevel 1 exit 1
@@ -16,6 +16,7 @@ cmake ${CMAKE_ARGS} -G Ninja \
 -DSCHEMA_VERSIONS="2x3;4;4x1;4x3_add2" \
 -DCMAKE_BUILD_TYPE=Release \
 -DCMAKE_INSTALL_PREFIX=$PREFIX \
+ -DCMAKE_CXX_STANDARD=17 \
  ${CMAKE_PLATFORM_FLAGS[@]} \
 -DCMAKE_PREFIX_PATH=$PREFIX \
 -DCMAKE_SYSTEM_PREFIX_PATH=$PREFIX \
@@ -46,4 +47,6 @@ cmake ${CMAKE_ARGS} -G Ninja \

 ninja

-ninja install -j 1
+ninja install -j 1
+
+python "${RECIPE_DIR}/update_version_init.py" "${PKG_VERSION}" "${SP_DIR}/ifcopenshell/__init__.py"
@@ -1,6 +1,5 @@
-variant:
-  - novtk
-  - all
+python:
+  - 3.12

 occt:
  - 7.8.1
@@ -24,14 +23,15 @@ cxx_compiler_version:
 - '12'    # [linux]
 - '16'    # [osx]
 c_stdlib_version:
- '2.12'    # [linux]
- '10.13'   # [osx]
+  - 2.17    # [linux]
+  - 10.13   # [osx and x86_64]
+  - 11.0    # [osx and arm64]
 hdf5:
- 1.14.3
+- 1.14.6
 libboost_devel:
- '1.84'
+- '1.86'
 libxml2:
- '2'
+- 2.13
 mpfr:
 - '4'
 gmp:
@@ -47,12 +47,12 @@ target_platform:
 - win-64    # [win]
 - linux-64  # [linux]
 - osx-64    # [osx]
-macos_machine:
- x86_64-apple-darwin13.4.0
-MACOSX_DEPLOYMENT_TARGET:
- '10.13'
-MACOSX_SDK_VERSION:
- '10.13'
+macos_machine:                 # [osx]
+  - x86_64-apple-darwin13.4.0  # [osx and x86_64]
+  - arm64-apple-darwin20.0.0   # [osx and arm64]
+MACOSX_DEPLOYMENT_TARGET:      # [osx]
+  - 11.0                       # [osx and arm64]
+  - 10.13                      # [osx and x86_64]

-CONDA_BUILD_SYSROOT:
-  - "/Users/runner/work/MacOSX10.13.sdk"  # [osx]
+CONDA_BUILD_SYSROOT:  # [osx]
+  - "/Users/runner/work/MacOSX10.13.sdk"  # [osx and x86_64]
@@ -1,64 +1,78 @@
-{% set version = environ.get('VERSION_OVERRIDE', '0.8.0') %}
-{% set build = 0 %}
-
-# Higher number -> Always prioritize "novtk" variant over "all" variant
-{% set build = build + 200 %}   # [variant == "novtk"]
-{% set build = build + 100 %}   # [variant == "all"]
+context:
+  version: ${{ env.get("VERSION_OVERRIDE", default="0.8.2.1") }}
+  build: 1

 package:
  name: ifcopenshell
-  version: {{ version }}
+  version: ${{ version }}

 source:
-  path: ../
+  - path: ..


 build:
-  number: {{ build }}
-  skip: true  # [py<39]
-  binary_relocation: false  # [osx]
-  string: py{{ CONDA_PY }}_{{ variant }}_h{{ PKG_HASH }}_{{ build }}
-  run_exports:
-    - {{ pin_subpackage('ifcopenshell', max_pin='x.x.x') }} *{{ variant }}*
-
+  number: ${{ build }}
+  dynamic_linking:
+    binary_relocation: ${{ true if osx }}

 requirements:
  build:
-    - cmake
+    - if: build_platform != target_platform
+      then:
+        - python
+        - cross-python_${{ target_platform }}
+    - cmake <4
    - ninja
    - swig >=4.1.1
-    - {{ stdlib("c") }}
-    - {{ compiler('c') }}
-    - {{ compiler('cxx') }}
+    - ${{ stdlib("c") }}
+    - ${{ compiler('c') }}
+    - ${{ compiler('cxx') }}
  host:
    - python
    - libboost-devel
-    - occt *=*{{ variant }}*
+    - occt
    - libxml2
    - cgal-cpp
    - hdf5
    - eigen
    - mpfr
    - nlohmann_json
-    - gmp  # [unix]
-    - mpir  # [win]
+    - gmp
    - zlib
  run:
    - python
-    - {{ pin_compatible('occt', max_pin='x.x.x') }} *{{ variant }}*
-    - {{ pin_compatible('cgal-cpp', max_pin='x.x') }}
-
-
-test:
-  imports:
-    - ifcopenshell
+    - shapely
+    - typing_extensions
+    - ${{ pin_compatible('occt', upper_bound='x.x.x') }}
+    - ${{ pin_compatible('cgal-cpp', upper_bound='x.x') }}
+  run_exports:
+    - ${{ pin_subpackage('ifcopenshell', upper_bound='x.x.x') }}

+tests:
+  - python:
+      imports:
+        - ifcopenshell
+      pip_check: false
+  - script:
+      - python -c "import ifcopenshell; assert ifcopenshell.version == '${{ version }}', 'print(ifcopenshell.version)'"
+    requirements:
+      run:
+        - occt * *novtk*  # Ensure that even though compiled against OCCT with VTK, it can still run with OCCT without VTK
+        - pytest
+        - python-dateutil
+        - xmlschema
+        - xsdata
+        - lxml
+        - isodate
+        - lark
+        - networkx
+        - tabulate
+        - shapely

 about:
-  home: https://ifcopenshell.org
  license: LGPL-3.0-or-later
  license_file: COPYING
-  summary: 'IfcOpenShell is a library to support the IFC file format'
+  summary: IfcOpenShell is a library to support the IFC file format
  description: |
    IfcOpenShell
    ============
@@ -293,8 +307,9 @@ about:
    [MSYS2]: https://msys2.github.io/ "MSYS2"
    [win/readme.md]: https://github.com/IfcOpenShell/IfcOpenShell/tree/master/win/readme.md "win/readme.md"
    [nix/build-all.py]: https://github.com/IfcOpenShell/IfcOpenShell/tree/master/nix/build-all.py "nix/build-all.py"
-  doc_url: https://ifcopenshell.org/
-  dev_url: https://github.com/IfcOpenShell/IfcOpenShell
+  homepage: https://ifcopenshell.org
+  repository: https://github.com/IfcOpenShell/IfcOpenShell
+  documentation: https://ifcopenshell.org/

 extra:
  recipe-maintainers:
@@ -0,0 +1,32 @@
+import re
+import argparse
+from pathlib import Path
+
+def update_version(file_path: str, version: str) -> None:
+    """Update the version string in the given __init__.py file."""
+    file_path = Path(file_path)
+
+    # Read the file and replace the version
+    file_contents = file_path.read_text(encoding="utf-8")
+    new_contents = re.sub(r'version = "0\.0\.0"', f'version = "{version}"', file_contents)
+
+    # Write the updated contents back to the file
+    file_path.write_text(new_contents, encoding="utf-8")
+
+    print(f"Updated version in {file_path} to {version}")
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser(description="Update the version string in a Python file.")
+    parser.add_argument(
+        "version",
+        type=str,
+        help="The version string to replace '0.0.0' with (e.g., '1.2.3')."
+    )
+    parser.add_argument(
+        "file",
+        type=str,
+        help="The path to the __init__.py file where the version will be updated."
+    )
+
+    args = parser.parse_args()
+    update_version(args.file, args.version)
@@ -69,6 +69,7 @@ import sysconfig
 import ssl
 ssl._create_default_https_context = ssl._create_unverified_context

+import time
 from urllib.request import urlretrieve


@@ -88,14 +89,14 @@ OCE_VERSION = "0.18.3"
 OCCT_VERSION = "7.8.1"
 BOOST_VERSION = "1.86.0"
 PCRE_VERSION = "8.41"
-LIBXML2_VERSION = "2.9.11"
+LIBXML2_VERSION = "2.13.8"
 SWIG_VERSION = "4.0.2"
 OPENCOLLADA_VERSION = "v1.6.68"
 HDF5_VERSION = "1.12.1"

 GMP_VERSION = "6.2.1"
 MPFR_VERSION = "3.1.6" # latest is 4.1.0
-CGAL_VERSION = "5.3"
+CGAL_VERSION = "5.6.x-branch"
 USD_VERSION = "23.05"
 TBB_VERSION = "2021.9.0"

@@ -323,7 +324,7 @@ def run_autoconf(arg1, configure_args, cwd):
    if "wasm" in flags:
        wasm.append("emconfigure")

-    run([*wasm, "/bin/sh", "../configure"] + configure_args + [f"--prefix={prefix}"], cwd=cwd)
+    run([*wasm, "/bin/sh", "../configure", *(["--host=wasm32"] if "wasm" in flags and not any(s.startswith('--host') for s in configure_args) else []), *configure_args, f"--prefix={prefix}"], cwd=cwd)


 def run_cmake(arg1, cmake_args, cmake_dir=None, cwd=None):
@@ -336,7 +337,7 @@ def run_cmake(arg1, cmake_args, cmake_dir=None, cwd=None):
    if "wasm" in flags:
        wasm.append("emcmake")
        
-    run([*wasm, "cmake", P, *cmake_args, f"-DCMAKE_BUILD_TYPE={BUILD_CFG}", f"-DBUILD_SHARED_LIBS={OFF_ON[not BUILD_STATIC]}"], cwd=cwd)
+    run([*wasm, "cmake", P, *cmake_args, f"-DCMAKE_BUILD_TYPE={BUILD_CFG}", f"-DBUILD_SHARED_LIBS={OFF_ON[not BUILD_STATIC]}", f"-DCMAKE_CXX_FLAGS='{os.environ['CXXFLAGS']}'", f"-DCMAKE_C_FLAGS='{os.environ['CFLAGS']}'", f"-DCMAKE_SHARED_LINKER_FLAGS={os.environ['LDFLAGS']}"], cwd=cwd)


 def git_clone_or_pull_repository(clone_url, target_dir, revision=None):
@@ -362,7 +363,7 @@ def git_clone_or_pull_repository(clone_url, target_dir, revision=None):
        run([git, "checkout", revision], cwd=target_dir)


-def build_dependency(name, mode, build_tool_args, download_url, download_name, download_tool=download_tool_default, revision=None, patch=None, additional_files={}, no_append_name=False, **kwargs):
+def build_dependency(name, mode, build_tool_args, download_url, download_name, download_tool=download_tool_default, revision=None, patch=None, shell=None, pre_compile_subs=[], additional_files={}, no_append_name=False, **kwargs):
    """Handles building of dependencies with different tools (which are
    distinguished with the `mode` argument. `build_tool_args` is expected to be
    a list which is necessary in order to not mess up quoting of compiler and
@@ -385,7 +386,14 @@ def build_dependency(name, mode, build_tool_args, download_url, download_name, d
            
        download_path = os.path.join(build_dir, download_name)
        if not os.path.exists(download_path):
-            urlretrieve(url, os.path.join(build_dir, download_path))
+            for _ in range(3):
+                try:
+                    urlretrieve(url, os.path.join(build_dir, download_path))
+                    break
+                except ConnectionError as e:
+                    print(e, "... retrying...")
+                    time.sleep(30.)
+                    continue
        else:
            logger.info(f"Download '{download_path}' already exists, assuming it's an undamaged download and that it has been extracted if possible, skipping")
    elif download_tool == download_tool_git:
@@ -404,6 +412,8 @@ def build_dependency(name, mode, build_tool_args, download_url, download_name, d
            compr = "gz"
        elif download_name.endswith(".tar.bz2"):
            compr = "bz2"
+        elif download_name.endswith(".tar.xz"):
+            compr = "xz"
        else:
            raise RuntimeError("fix source for new download type")
        download_tarfile = tarfile.open(name=download_tarfile_path, mode=f"r:{compr}")
@@ -430,6 +440,9 @@ def build_dependency(name, mode, build_tool_args, download_url, download_name, d
                except Exception as e:
                    # Assert that the patch has already been applied
                    run(["patch", "-p1", "--batch", "--reverse", "--dry-run", "-i", patch_abs], cwd=extract_dir)
+
+    if shell is not None:
+        sp.run(shell, shell=True, check=True, cwd=extract_dir)
    
    if mode == "ctest":
        run(["ctest", "-S", "HDF5config.cmake,BUILD_GENERATOR=Unix", "-C", BUILD_CFG, "-V", "-O", "hdf5.log"], cwd=extract_dir)
@@ -451,6 +464,12 @@ def build_dependency(name, mode, build_tool_args, download_url, download_name, d
            run_cmake(name, build_tool_args, cwd=extract_build_dir)
        else:
            raise ValueError()
+        for fn, before, after in pre_compile_subs:
+            with open(os.path.join(extract_dir, fn), 'r') as f:
+                s = f.read()
+            s = s.replace(before, after)
+            with open(os.path.join(extract_dir, fn), 'w') as f:
+                f.write(s)
        logger.info(f"\rBuilding {name}...   ")
        run([make, f"-j{IFCOS_NUM_BUILD_PROCS}", "VERBOSE=1"], cwd=extract_build_dir)
        logger.info(f"\rInstalling {name}... ")
@@ -478,9 +497,6 @@ ADDITIONAL_ARGS = []
 if platform.system() == "Darwin":
    ADDITIONAL_ARGS = [f"-mmacosx-version-min={TOOLSET}"] + ADDITIONAL_ARGS

-if "wasm" in flags:
-    ADDITIONAL_ARGS.extend(("-sWASM_BIGINT", "-fwasm-exceptions"))
-
 # If the linker supports GC sections, set it up to reduce binary file size
 # -fPIC is required for the shared libraries to work

@@ -491,7 +507,11 @@ CFLAGS = os.environ.get("CFLAGS", "")
 LDFLAGS = os.environ.get("LDFLAGS", "")

 ADDITIONAL_ARGS_STR = " ".join(ADDITIONAL_ARGS)
-if "wasm" not in flags and sp.call([bash, "-c", "ld --gc-sections 2>&1 | grep -- --gc-sections &> /dev/null"]) != 0:
+
+if "wasm" in flags:
+    CFLAGS_MINIMAL = CXXFLAGS_MINIMAL = CFLAGS = CXXFLAGS = os.environ['SIDE_MODULE_CFLAGS']
+    LDFLAGS = os.environ['SIDE_MODULE_LDFLAGS']
+elif sp.call([bash, "-c", "ld --gc-sections 2>&1 | grep -- --gc-sections &> /dev/null"]) != 0:
    CXXFLAGS_MINIMAL = f"{CXXFLAGS} {PIC} {ADDITIONAL_ARGS_STR}"
    CFLAGS_MINIMAL = f"{CFLAGS} {PIC} {ADDITIONAL_ARGS_STR}"
    if BUILD_STATIC:
@@ -517,6 +537,7 @@ if "lto" in flags:
        locals()[f] += f" -flto={IFCOS_NUM_BUILD_PROCS}"

 os.environ["CXXFLAGS"] = CXXFLAGS
+os.environ["CPPFLAGS"] = CXXFLAGS
 os.environ["CFLAGS"] = CFLAGS
 os.environ["LDFLAGS"] = LDFLAGS

@@ -653,8 +674,8 @@ if "libxml2" in targets:
            "--without-iconv",
            "--without-lzma"
        ],
-        download_url="ftp://xmlsoft.org/libxml2/",
-        download_name=f"libxml2-{LIBXML2_VERSION}.tar.gz"
+        download_url=f"https://download.gnome.org/sources/libxml2/{'.'.join(LIBXML2_VERSION.split('.')[0:2])}/",
+        download_name=f"libxml2-{LIBXML2_VERSION}.tar.xz"
    )
    
 if "OpenCOLLADA" in targets:
@@ -687,9 +708,11 @@ if "OpenCOLLADA" in targets:

 if "python" in targets and not USE_CURRENT_PYTHON_VERSION and "wasm" not in flags:
    # Python should not be built with -fvisibility=hidden, from experience that introduces segfaults
+    OLD_CPP_FLAGS = os.environ["CPPFLAGS"]
    OLD_CXX_FLAGS = os.environ["CXXFLAGS"]
    OLD_C_FLAGS = os.environ["CFLAGS"]
    os.environ["CXXFLAGS"] = CXXFLAGS_MINIMAL
+    os.environ["CPPFLAGS"] = CXXFLAGS_MINIMAL
    os.environ["CFLAGS"] = CFLAGS_MINIMAL

    # On OSX a dynamic python library is built or it would not be compatible
@@ -719,6 +742,7 @@ if "python" in targets and not USE_CURRENT_PYTHON_VERSION and "wasm" not in flag
            ):
                raise e

+    os.environ["CPPFLAGS"] = OLD_CPP_FLAGS
    os.environ["CXXFLAGS"] = OLD_CXX_FLAGS
    os.environ["CFLAGS"] = OLD_C_FLAGS

@@ -764,6 +788,7 @@ if "cgal" in targets:
        name=f"gmp-{GMP_VERSION}",
        mode="autoconf",
        build_tool_args=[ENABLE_FLAG, DISABLE_FLAG, "--with-pic", *gmp_args],
+        pre_compile_subs=([("build/config.h", "HAVE_OBSTACK_VPRINTF 1", "HAVE_OBSTACK_VPRINTF 0")] if "wasm" in flags else []),
        download_url="https://ftp.gnu.org/gnu/gmp/",
        download_name=f"gmp-{GMP_VERSION}.tar.bz2"
    )
@@ -792,7 +817,7 @@ if "cgal" in targets:
        download_url="https://github.com/CGAL/cgal.git",
        download_name="cgal",
        download_tool=download_tool_git,
-        revision=f"v{CGAL_VERSION}"
+        revision=CGAL_VERSION
    )

 if "usd" in targets:
@@ -842,6 +867,7 @@ os.makedirs(executables_dir, exist_ok=True)


 cmake_args = [
+    "-DCMAKE_CXX_STANDARD="            "17",
    "-DUSE_MMAP="                      "OFF",
    "-DBUILD_EXAMPLES="                "OFF",
    "-DBUILD_SHARED_LIBS="             +OFF_ON[not BUILD_STATIC],
@@ -947,6 +973,7 @@ if "IfcOpenShell-Python" in targets:
    if "wasm" in flags:
        ADDITIONAL_ARGS = f"-Wl,-undefined,suppress -sSIDE_MODULE=2 -sEXPORTED_FUNCTIONS=_PyInit__ifcopenshell_wrapper"
        
+    os.environ["CPPFLAGS"] = f"{CXXFLAGS_MINIMAL} {ADDITIONAL_ARGS}"
    os.environ["CXXFLAGS"] = f"{CXXFLAGS_MINIMAL} {ADDITIONAL_ARGS}"
    os.environ["CFLAGS"] = f"{CFLAGS_MINIMAL} {ADDITIONAL_ARGS}"
    os.environ["LDFLAGS"] = f"{LDFLAGS} {ADDITIONAL_ARGS}"
@@ -7,7 +7,7 @@ source:

 build:
  script: |
-    BUILD_CFG=Release python nix/build-all.py --without-hdf5 --without-opencollada --without-swig --without-pcre -v --wasm --py312 IfcOpenShell-Python
+    BUILD_CFG=Release python nix/build-all.py --without-hdf5 --without-opencollada --without-swig --without-pcre -v --wasm --py313 IfcOpenShell-Python
    mv package/ifcopenshell .
    cp pyodide/setup.py .

@@ -1,37 +1,62 @@
 [tool.black]
 line-length = 120
-include = '''
-    src/(
-        bcf
-        |bcfserver
-        |bonsai
-        |bsdd
-        |foundationserver
-        |ifc2ca
-        |ifc4d
-        |ifc5d
-        |ifcbimtester
-        |ifcblender
-        |ifccityjson
-        |ifcclash
-        |ifccsv
-        |ifcdiff
-        |ifcfm
-        |ifcpatch
-        |ifctester
-        |ifcopenshell-python
-        |ifcsverchok
-        |opencdeserver
-    )/.*.py$
-'''
+include = "src/.*.pyi?$"
 extend-exclude = '''
    src/ifcopenshell-python/ifcopenshell/express/*
    |src/ifcopenshell-python/ifcopenshell/mvd/*
    |src/ifcopenshell-python/ifcopenshell/simple_spf/*
    |src/ifc2ca/templates/*
    |src/ifcconvert/cityjson/*
+    |src/svgfill
+    |src/exterior-shell-extractor
+    |src/pyodide
 '''

 [tool.pyright]
 reportInvalidTypeForm = false
 disableBytesTypePromotions = true
+reportUnnecessaryTypeIgnoreComment = true
+
+# Define here general ruff settings,
+# then they will be inherited projects .toml files.
+# This allows using assuming different Python version for different projects.
+[tool.ruff]
+exclude = [
+    # Submodules.
+    "src/ifcconvert/cityjson",
+    "src/ifcopenshell-python/ifcopenshell/express",
+    "src/ifcopenshell-python/ifcopenshell/mvd",
+    "src/ifcopenshell-python/ifcopenshell/simple_spf",
+    "src/svgfill",
+    #
+    # Unformatted.
+    "src/exterior-shell-extractor",
+    # Incompatible with linter.
+    "src/ifc2ca/templates",
+]
+[tool.ruff.lint]
+select = [
+    # Default Ruff rules.
+    # "E4",        # imports
+    # "E7",        # statements
+    "E9",          # io errors
+    # "F",         # pyflakes
+    #
+    "FA",          # future annotations
+    "UP",          # pyupgrade
+    "RUF015",      # next() > list_comprehension[0]
+]
+ignore = [
+    "FA100", # Conflicts with Blender using annotations for props definitions.
+    # Maybe will enable later:
+    "UP007", # Optional to X | Y
+    "UP045", # Optional to X | None
+    "UP015", # Unnecessary mode argument
+    "UP028", # yield for -> yield from
+    "UP030", # implicit references for positional format fields
+    "UP031", # Replace % with .format
+    "UP032", # Replace .format with f-string
+
+    # Deprecated Ruff rules.
+    "UP038", # Use X | Y in isinstance
+]
@@ -20,7 +20,7 @@ def get_extensions_attributes(extensions: Extensions) -> dict[str, AttributeData
    - subattribute name"""
    possible_attributes = {}
    for field in fields(type(extensions)):
-        field_type = field.type.__args__[0]  # type: ignore [reportAttributeAccessIssue]
+        field_type = field.type.__args__[0]  # pyright: ignore [reportAttributeAccessIssue]
        subfield = next(iter(fields(field_type)))
        xsd_name = subfield.metadata["name"]
        possible_attributes[field.name] = AttributeData(field_type, subfield.name, xsd_name)
@@ -6,6 +6,7 @@ Copyright (c) 2017-2020 Anthon van der Neut, Ruamel bvba
 original idea from https://stackoverflow.com/a/19722365/1307905
 """

+from __future__ import annotations
 import zipfile
 from io import BytesIO
 from os import PathLike
@@ -47,7 +48,7 @@ class InMemoryZipFile:
    def data(self) -> bytes:
        return self.in_memory_data.getvalue()

-    def __enter__(self) -> "InMemoryZipFile":
+    def __enter__(self) -> InMemoryZipFile:
        return self

    def __exit__(self, exc_type: Any, exc_value: Any, traceback: Any) -> None:
@@ -1,5 +1,6 @@
 """BCF XML V2 handler."""

+from __future__ import annotations
 import uuid
 import warnings
 import zipfile
@@ -31,7 +32,7 @@ class BcfXml:
        self._extension_schema: Optional[bytes] = None
        self._zip_file = self._load_zip_file()

-    def __enter__(self) -> "BcfXml":
+    def __enter__(self) -> BcfXml:
        return self

    def __exit__(self, *args: Any) -> None:
@@ -99,7 +100,7 @@ class BcfXml:
            extensions = mdl_extensions.Extensions()

            xs = "{http://www.w3.org/2001/XMLSchema}"
-            root = etree.parse(io.BytesIO((self.extension_schema)))
+            root = etree.parse(io.BytesIO(self.extension_schema))

            attrs = bcf.agnostic.extensions.get_extensions_attributes(extensions)
            xsd_to_attrs = {v.subattr_xsd_name: k for k, v in attrs.items()}
@@ -148,7 +149,7 @@ class BcfXml:
        return topics

    @classmethod
-    def load(cls, filename: Path, xml_handler: Optional[AbstractXmlParserSerializer] = None) -> Optional["BcfXml"]:
+    def load(cls, filename: Path, xml_handler: Optional[AbstractXmlParserSerializer] = None) -> Optional[BcfXml]:
        """
        Create a BcfXml object from a file.

@@ -172,7 +173,7 @@ class BcfXml:
        cls,
        project_name: Optional[str] = None,
        xml_handler: Optional[AbstractXmlParserSerializer] = None,
-    ) -> "BcfXml":
+    ) -> BcfXml:
        """
        Create a new BcfXml object.

@@ -261,7 +262,7 @@ class BcfXml:
        )

    # region Deprecated methods
-    def new_project(self) -> "BcfXml":
+    def new_project(self) -> BcfXml:
        """Deprecated method."""
        warnings.warn("new_project is deprecated, use create_new instead.", DeprecationWarning)
        return self.create_new()
@@ -14,16 +14,20 @@
 # Currently extensions support for v2 is only read-only.


+import sys
 from dataclasses import dataclass, field, fields
-from typing import List, NamedTuple, Optional
+from typing import Optional


-@dataclass(slots=True, kw_only=True)
+DATACLASS_KWARGS = {} if sys.version_info < (3, 10) else {"slots": True, "kw_only": True}
+
+
+@dataclass(**DATACLASS_KWARGS)
 class ExtensionsPriorities:
    class Meta:
        global_type = False

-    priority: List[str] = field(
+    priority: list[str] = field(
        default_factory=list,
        metadata={
            "name": "Priority",
@@ -35,12 +39,12 @@ class ExtensionsPriorities:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class ExtensionsSnippetTypes:
    class Meta:
        global_type = False

-    snippet_type: List[str] = field(
+    snippet_type: list[str] = field(
        default_factory=list,
        metadata={
            "name": "SnippetType",
@@ -52,12 +56,12 @@ class ExtensionsSnippetTypes:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class ExtensionsStages:
    class Meta:
        global_type = False

-    stage: List[str] = field(
+    stage: list[str] = field(
        default_factory=list,
        metadata={
            "name": "Stage",
@@ -69,12 +73,12 @@ class ExtensionsStages:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class ExtensionsTopicLabels:
    class Meta:
        global_type = False

-    topic_label: List[str] = field(
+    topic_label: list[str] = field(
        default_factory=list,
        metadata={
            "name": "TopicLabel",
@@ -86,12 +90,12 @@ class ExtensionsTopicLabels:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class ExtensionsTopicStatuses:
    class Meta:
        global_type = False

-    topic_status: List[str] = field(
+    topic_status: list[str] = field(
        default_factory=list,
        metadata={
            "name": "TopicStatus",
@@ -103,12 +107,12 @@ class ExtensionsTopicStatuses:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class ExtensionsTopicTypes:
    class Meta:
        global_type = False

-    topic_type: List[str] = field(
+    topic_type: list[str] = field(
        default_factory=list,
        metadata={
            "name": "TopicType",
@@ -120,12 +124,12 @@ class ExtensionsTopicTypes:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class ExtensionsUsers:
    class Meta:
        global_type = False

-    user: List[str] = field(
+    user: list[str] = field(
        default_factory=list,
        metadata={
            "name": "UserIdType",
@@ -137,7 +141,7 @@ class ExtensionsUsers:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class Extensions:
    topic_types: Optional[ExtensionsTopicTypes] = field(
        default=None,
@@ -1,10 +1,13 @@
+import sys
 from dataclasses import dataclass, field
-from typing import List, Optional
+from typing import Optional

 from xsdata.models.datatype import XmlDateTime

+DATACLASS_KWARGS = {} if sys.version_info < (3, 10) else {"slots": True, "kw_only": True}

-@dataclass(slots=True, kw_only=True)
+
+@dataclass(**DATACLASS_KWARGS)
 class BimSnippet:
    reference: str = field(
        metadata={
@@ -38,7 +41,7 @@ class BimSnippet:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class CommentViewpoint:
    class Meta:
        global_type = False
@@ -53,7 +56,7 @@ class CommentViewpoint:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class HeaderFile:
    class Meta:
        global_type = False
@@ -109,7 +112,7 @@ class HeaderFile:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class TopicDocumentReference:
    class Meta:
        global_type = False
@@ -147,7 +150,7 @@ class TopicDocumentReference:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class TopicRelatedTopic:
    class Meta:
        global_type = False
@@ -162,7 +165,7 @@ class TopicRelatedTopic:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class ViewPoint:
    viewpoint: Optional[str] = field(
        default=None,
@@ -198,7 +201,7 @@ class ViewPoint:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class Comment:
    date: XmlDateTime = field(
        metadata={
@@ -258,9 +261,9 @@ class Comment:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class Header:
-    file: List[HeaderFile] = field(
+    file: list[HeaderFile] = field(
        default_factory=list,
        metadata={
            "name": "File",
@@ -271,9 +274,9 @@ class Header:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class Topic:
-    reference_link: List[str] = field(
+    reference_link: list[str] = field(
        default_factory=list,
        metadata={
            "name": "ReferenceLink",
@@ -305,7 +308,7 @@ class Topic:
            "namespace": "",
        },
    )
-    labels: List[str] = field(
+    labels: list[str] = field(
        default_factory=list,
        metadata={
            "name": "Labels",
@@ -385,7 +388,7 @@ class Topic:
            "namespace": "",
        },
    )
-    document_reference: List[TopicDocumentReference] = field(
+    document_reference: list[TopicDocumentReference] = field(
        default_factory=list,
        metadata={
            "name": "DocumentReference",
@@ -393,7 +396,7 @@ class Topic:
            "namespace": "",
        },
    )
-    related_topic: List[TopicRelatedTopic] = field(
+    related_topic: list[TopicRelatedTopic] = field(
        default_factory=list,
        metadata={
            "name": "RelatedTopic",
@@ -425,7 +428,7 @@ class Topic:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class Markup:
    header: Optional[Header] = field(
        default=None,
@@ -443,7 +446,7 @@ class Markup:
            "required": True,
        }
    )
-    comment: List[Comment] = field(
+    comment: list[Comment] = field(
        default_factory=list,
        metadata={
            "name": "Comment",
@@ -451,7 +454,7 @@ class Markup:
            "namespace": "",
        },
    )
-    viewpoints: List[ViewPoint] = field(
+    viewpoints: list[ViewPoint] = field(
        default_factory=list,
        metadata={
            "name": "Viewpoints",
@@ -1,8 +1,11 @@
+import sys
 from dataclasses import dataclass, field
 from typing import Optional

+DATACLASS_KWARGS = {} if sys.version_info < (3, 10) else {"slots": True, "kw_only": True}

-@dataclass(slots=True, kw_only=True)
+
+@dataclass(**DATACLASS_KWARGS)
 class Project:
    name: Optional[str] = field(
        default=None,
@@ -21,7 +24,7 @@ class Project:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class ProjectExtension:
    project: Optional[Project] = field(
        default=None,
@@ -1,8 +1,11 @@
+import sys
 from dataclasses import dataclass, field
 from typing import Optional

+DATACLASS_KWARGS = {} if sys.version_info < (3, 10) else {"slots": True, "kw_only": True}

-@dataclass(slots=True, kw_only=True)
+
+@dataclass(**DATACLASS_KWARGS)
 class Version:
    detailed_version: Optional[str] = field(
        default=None,
@@ -1,6 +1,9 @@
+import sys
 from dataclasses import dataclass, field
 from enum import Enum
-from typing import List, Optional
+from typing import Optional
+
+DATACLASS_KWARGS = {} if sys.version_info < (3, 10) else {"slots": True, "kw_only": True}


 class BitmapFormat(Enum):
@@ -8,7 +11,7 @@ class BitmapFormat(Enum):
    JPG = "JPG"


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class Component:
    originating_system: Optional[str] = field(
        default=None,
@@ -35,7 +38,7 @@ class Component:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class Direction:
    x: float = field(
        metadata={
@@ -60,7 +63,7 @@ class Direction:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class Point:
    x: float = field(
        metadata={
@@ -85,7 +88,7 @@ class Point:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class ViewSetupHints:
    spaces_visible: Optional[bool] = field(
        default=None,
@@ -110,7 +113,7 @@ class ViewSetupHints:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class ClippingPlane:
    location: Point = field(
        metadata={
@@ -128,12 +131,12 @@ class ClippingPlane:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class ComponentColoringColor:
    class Meta:
        global_type = False

-    component: List[Component] = field(
+    component: list[Component] = field(
        default_factory=list,
        metadata={
            "name": "Component",
@@ -151,9 +154,9 @@ class ComponentColoringColor:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class ComponentSelection:
-    component: List[Component] = field(
+    component: list[Component] = field(
        default_factory=list,
        metadata={
            "name": "Component",
@@ -163,12 +166,12 @@ class ComponentSelection:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class ComponentVisibilityExceptions:
    class Meta:
        global_type = False

-    component: List[Component] = field(
+    component: list[Component] = field(
        default_factory=list,
        metadata={
            "name": "Component",
@@ -178,7 +181,7 @@ class ComponentVisibilityExceptions:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class Line:
    start_point: Point = field(
        metadata={
@@ -196,7 +199,7 @@ class Line:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class OrthogonalCamera:
    """
    Attributes
@@ -236,7 +239,7 @@ class OrthogonalCamera:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class PerspectiveCamera:
    """
    Attributes
@@ -281,7 +284,7 @@ class PerspectiveCamera:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class VisualizationInfoBitmap:
    class Meta:
        global_type = False
@@ -330,9 +333,9 @@ class VisualizationInfoBitmap:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class ComponentColoring:
-    color: List[ComponentColoringColor] = field(
+    color: list[ComponentColoringColor] = field(
        default_factory=list,
        metadata={
            "name": "Color",
@@ -342,7 +345,7 @@ class ComponentColoring:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class ComponentVisibility:
    exceptions: Optional[ComponentVisibilityExceptions] = field(
        default=None,
@@ -360,12 +363,12 @@ class ComponentVisibility:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class VisualizationInfoClippingPlanes:
    class Meta:
        global_type = False

-    clipping_plane: List[ClippingPlane] = field(
+    clipping_plane: list[ClippingPlane] = field(
        default_factory=list,
        metadata={
            "name": "ClippingPlane",
@@ -374,12 +377,12 @@ class VisualizationInfoClippingPlanes:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class VisualizationInfoLines:
    class Meta:
        global_type = False

-    line: List[Line] = field(
+    line: list[Line] = field(
        default_factory=list,
        metadata={
            "name": "Line",
@@ -389,7 +392,7 @@ class VisualizationInfoLines:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class Components:
    view_setup_hints: Optional[ViewSetupHints] = field(
        default=None,
@@ -421,7 +424,7 @@ class Components:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class VisualizationInfo:
    """
    VisualizationInfo documentation.
@@ -462,7 +465,7 @@ class VisualizationInfo:
            "type": "Element",
        },
    )
-    bitmap: List[VisualizationInfoBitmap] = field(
+    bitmap: list[VisualizationInfoBitmap] = field(
        default_factory=list,
        metadata={
            "name": "Bitmap",
@@ -1,5 +1,6 @@
 """BCF XML V2 Topic handler."""

+from __future__ import annotations
 import datetime
 import tempfile
 import uuid
@@ -152,7 +153,7 @@ class TopicHandler:
        topic_type: str = "",
        topic_status: str = "",
        xml_handler: Optional[AbstractXmlParserSerializer] = None,
-    ) -> "TopicHandler":
+    ) -> TopicHandler:
        """
        Create a new BCF topic.

@@ -1,6 +1,7 @@
 import uuid
 import zipfile
-from typing import Any, Iterable, Optional, Literal, Union
+from typing import Any, Optional, Literal, Union
+from collections.abc import Iterable

 import numpy as np
 from ifcopenshell import entity_instance
@@ -21,11 +21,11 @@ import http.server
 import os
 import tempfile
 import time
-import urllib
+import urllib.parse
 import uuid
 import webbrowser
 from re import A
-from typing import Any, Optional, Tuple
+from typing import Any, Optional

 import requests

@@ -40,7 +40,7 @@ class OAuthReceiver(http.server.BaseHTTPRequestHandler):
        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"))
+        self.wfile.write(b"You have now authenticated :) You may now close this browser window.")


 class FoundationClient:
@@ -174,7 +174,7 @@ class BcfClient:
        except requests.exceptions.HTTPError as e:
            print(f"message: {response.reason}'   '{response.status_code}'   '{ e }")

-    def post(self, endpoint: str, data: Any = None, params: Any = None) -> Tuple[int, str]:
+    def post(self, endpoint: str, data: Any = None, params: Any = None) -> tuple[int, str]:
        headers = {
            "Authorization": f"Bearer {self.foundation_client.get_access_token()}",
            "Content-type": "application/json",
@@ -192,7 +192,7 @@ class BcfClient:
            print(f"message: {response.reason}'  '{response.status_code}, {errh}")
            return response.status_code, response.reason

-    def put(self, endpoint: str, data: Any = None, params: Any = None) -> Tuple[int, str]:
+    def put(self, endpoint: str, data: Any = None, params: Any = None) -> tuple[int, str]:
        headers = {
            "Authorization": f"Bearer {self.foundation_client.get_access_token()}",
            "Content-type": "application/json",
@@ -210,7 +210,7 @@ class BcfClient:
            print(f"message: {response.reason}'  '{response.status_code}, {errh}")
            return response.status_code, response.reason

-    def delete(self, endpoint: str, params: Any = None) -> Tuple[int, str]:
+    def delete(self, endpoint: str, params: Any = None) -> tuple[int, str]:
        headers = {
            "Authorization": f"Bearer {self.foundation_client.get_access_token()}",
            "Content-type": "application/json",
@@ -237,7 +237,7 @@ class BcfClient:
            },
        )

-    def update_project(self, project_id: str = "", data: Any = None) -> Tuple[int, str]:
+    def update_project(self, project_id: str = "", data: Any = None) -> tuple[int, str]:
        url = f"{self.baseurl}/projects/{project_id}"
        headers = {"Authorization": f"Bearer {self.foundation_client.get_access_token()}"}
        resp = requests.put(url, headers=headers, data=data)
@@ -276,16 +276,16 @@ class BcfClient:
            },
        )

-    def create_topic(self, project_id: str = "", data: Any = None) -> Tuple[int, str]:
+    def create_topic(self, project_id: str = "", data: Any = None) -> tuple[int, str]:
        return self.post(f"/projects/{project_id}/topics", data=data)

-    def update_topic(self, project_id: str = "", topic_id: str = "", data: Any = None) -> Tuple[int, str]:
+    def update_topic(self, project_id: str = "", topic_id: str = "", data: Any = None) -> tuple[int, str]:
        return self.put(f"/projects/{project_id}/topics/{topic_id}", data=data)

-    def delete_topic(self, project_id: str = "", topic_id: str = "") -> Tuple[int, str]:
+    def delete_topic(self, project_id: str = "", topic_id: str = "") -> tuple[int, str]:
        return self.delete(f"/projects/{project_id}/topics/{topic_id}")

-    def get_snippet(self, project_id: str = "", topic_id: str = "") -> Tuple[int, str]:
+    def get_snippet(self, project_id: str = "", topic_id: str = "") -> tuple[int, str]:
        headers = {
            "Authorization": f"Bearer {self.foundation_client.get_access_token()}",
            "Content-type": "application/octet-stream",
@@ -332,7 +332,7 @@ class BcfClient:
        topic_id: str = "",
        data: Any = None,
        params: Any = None,
-    ) -> Tuple[int, str]:
+    ) -> tuple[int, str]:
        return self.put(
            f"/projects/{project_id}/topics/{topic_id}/files",
            data=data,
@@ -347,7 +347,7 @@ class BcfClient:
        topic_id: str = "",
        data: Any = None,
        params: Any = None,
-    ) -> Tuple[int, str]:
+    ) -> tuple[int, str]:
        return self.post(
            f"/projects/{project_id}/topics/{topic_id}/comments",
            data=data,
@@ -363,7 +363,7 @@ class BcfClient:
            },
        )

-    def delete_comment(self, project_id: str = "", topic_id: str = "", comment_id: str = "") -> Tuple[int, str]:
+    def delete_comment(self, project_id: str = "", topic_id: str = "", comment_id: str = "") -> tuple[int, str]:
        return self.delete(f"/projects/{project_id}/topics/{topic_id}/comments/{comment_id}")

    def update_comment(
@@ -372,7 +372,7 @@ class BcfClient:
        topic_id: str = "",
        comment_id: str = "",
        data: Any = None,
-    ) -> Tuple[int, str]:
+    ) -> tuple[int, str]:
        return self.put(
            f"/projects/{project_id}/topics/{topic_id}/comments/{comment_id}",
            data=data,
@@ -387,7 +387,7 @@ class BcfClient:
            },
        )

-    def create_viewpoints(self, project_id: str = "", topic_id: str = "", data: Any = None) -> Tuple[int, str]:
+    def create_viewpoints(self, project_id: str = "", topic_id: str = "", data: Any = None) -> tuple[int, str]:
        return self.post(
            f"/projects/{project_id}/topics/{topic_id}/viewpoints",
            data=data,
@@ -408,7 +408,7 @@ class BcfClient:
        project_id: str = "",
        topic_id: str = "",
        viewpoint_id: str = "",
-    ) -> Tuple[int, str]:
+    ) -> tuple[int, str]:
        return self.delete(
            f"/projects/{project_id}/topics/{topic_id}/viewpoints/{viewpoint_id}",
        )
@@ -478,7 +478,7 @@ class BcfClient:
        project_id: str = "",
        topic_id: str = "",
        data: Any = None,
-    ) -> Tuple[int, str]:
+    ) -> tuple[int, str]:
        return self.put(
            f"/projects/{project_id}/topics/{topic_id}/related_topics",
            data=data,
@@ -498,7 +498,7 @@ class BcfClient:
        project_id: str = "",
        topic_id: str = "",
        data: Any = None,
-    ) -> Tuple[int, str]:
+    ) -> tuple[int, str]:
        return self.post(
            f"/projects/{project_id}/topics/{topic_id}/document_references",
            data=data,
@@ -510,7 +510,7 @@ class BcfClient:
        topic_id: str = "",
        document_reference_id: str = "",
        data: Any = None,
-    ) -> Tuple[int, str]:
+    ) -> tuple[int, str]:
        return self.put(
            f"/projects/{project_id}/topics/{topic_id}/document_references/{document_reference_id}",
            data=data,
@@ -543,7 +543,7 @@ class BcfClient:

        return response.status_code

-    def get_document(self, project_id: str = "", topic_id: str = "", document_id: str = "") -> Tuple[int, str]:
+    def get_document(self, project_id: str = "", topic_id: str = "", document_id: str = "") -> tuple[int, str]:
        headers = {
            "Authorization": f"Bearer {self.foundation_client.get_access_token()}",
            "Content-type": "application/octet-stream",
@@ -1,5 +1,6 @@
 """BCF XML V3 handlers."""

+from __future__ import annotations
 import uuid
 import warnings
 import zipfile
@@ -30,7 +31,7 @@ class BcfXml:
        self._documents: Optional[DocumentsHandler] = None
        self._zip_file = self._load_zip_file()

-    def __enter__(self) -> "BcfXml":
+    def __enter__(self) -> BcfXml:
        return self

    def __exit__(self, *args: Any) -> None:
@@ -116,7 +117,7 @@ class BcfXml:
        return self._documents

    @classmethod
-    def load(cls, filename: Path, xml_handler: Optional[AbstractXmlParserSerializer] = None) -> Optional["BcfXml"]:
+    def load(cls, filename: Path, xml_handler: Optional[AbstractXmlParserSerializer] = None) -> Optional[BcfXml]:
        """
        Create a BcfXml object from a file.

@@ -141,7 +142,7 @@ class BcfXml:
        project_name: Optional[str] = None,
        extensions: Optional[mdl.Extensions] = None,
        xml_handler: Optional[AbstractXmlParserSerializer] = None,
-    ) -> "BcfXml":
+    ) -> BcfXml:
        """
        Create a new BcfXml object.

@@ -239,7 +240,7 @@ class BcfXml:
        )

    # region Deprecated methods
-    def new_project(self) -> "BcfXml":
+    def new_project(self) -> BcfXml:
        """Deprecated method."""
        warnings.warn("new_project is deprecated, use create_new instead.", DeprecationWarning)
        return self.create_new()
@@ -1,8 +1,11 @@
+import sys
 from dataclasses import dataclass, field
-from typing import List, Optional
+from typing import Optional
+
+DATACLASS_KWARGS = {} if sys.version_info < (3, 10) else {"slots": True, "kw_only": True}


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class Document:
    filename: str = field(
        metadata={
@@ -34,12 +37,12 @@ class Document:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class DocumentInfoDocuments:
    class Meta:
        global_type = False

-    document: List[Document] = field(
+    document: list[Document] = field(
        default_factory=list,
        metadata={
            "name": "Document",
@@ -49,7 +52,7 @@ class DocumentInfoDocuments:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class DocumentInfo:
    documents: Optional[DocumentInfoDocuments] = field(
        default=None,
@@ -1,13 +1,16 @@
+import sys
 from dataclasses import dataclass, field
-from typing import List, Optional
+from typing import Optional
+
+DATACLASS_KWARGS = {} if sys.version_info < (3, 10) else {"slots": True, "kw_only": True}


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class ExtensionsPriorities:
    class Meta:
        global_type = False

-    priority: List[str] = field(
+    priority: list[str] = field(
        default_factory=list,
        metadata={
            "name": "Priority",
@@ -19,12 +22,12 @@ class ExtensionsPriorities:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class ExtensionsSnippetTypes:
    class Meta:
        global_type = False

-    snippet_type: List[str] = field(
+    snippet_type: list[str] = field(
        default_factory=list,
        metadata={
            "name": "SnippetType",
@@ -36,12 +39,12 @@ class ExtensionsSnippetTypes:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class ExtensionsStages:
    class Meta:
        global_type = False

-    stage: List[str] = field(
+    stage: list[str] = field(
        default_factory=list,
        metadata={
            "name": "Stage",
@@ -53,12 +56,12 @@ class ExtensionsStages:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class ExtensionsTopicLabels:
    class Meta:
        global_type = False

-    topic_label: List[str] = field(
+    topic_label: list[str] = field(
        default_factory=list,
        metadata={
            "name": "TopicLabel",
@@ -70,12 +73,12 @@ class ExtensionsTopicLabels:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class ExtensionsTopicStatuses:
    class Meta:
        global_type = False

-    topic_status: List[str] = field(
+    topic_status: list[str] = field(
        default_factory=list,
        metadata={
            "name": "TopicStatus",
@@ -87,12 +90,12 @@ class ExtensionsTopicStatuses:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class ExtensionsTopicTypes:
    class Meta:
        global_type = False

-    topic_type: List[str] = field(
+    topic_type: list[str] = field(
        default_factory=list,
        metadata={
            "name": "TopicType",
@@ -104,12 +107,12 @@ class ExtensionsTopicTypes:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class ExtensionsUsers:
    class Meta:
        global_type = False

-    user: List[str] = field(
+    user: list[str] = field(
        default_factory=list,
        metadata={
            "name": "User",
@@ -121,7 +124,7 @@ class ExtensionsUsers:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class Extensions:
    topic_types: Optional[ExtensionsTopicTypes] = field(
        default=None,
@@ -1,10 +1,13 @@
+import sys
 from dataclasses import dataclass, field
-from typing import List, Optional
+from typing import Optional

 from xsdata.models.datatype import XmlDateTime

+DATACLASS_KWARGS = {} if sys.version_info < (3, 10) else {"slots": True, "kw_only": True}

-@dataclass(slots=True, kw_only=True)
+
+@dataclass(**DATACLASS_KWARGS)
 class BimSnippet:
    reference: str = field(
        metadata={
@@ -44,7 +47,7 @@ class BimSnippet:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class CommentViewpoint:
    class Meta:
        global_type = False
@@ -59,7 +62,7 @@ class CommentViewpoint:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class DocumentReference:
    document_guid: Optional[str] = field(
        default=None,
@@ -100,7 +103,7 @@ class DocumentReference:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class File:
    filename: Optional[str] = field(
        default=None,
@@ -157,12 +160,12 @@ class File:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class TopicLabels:
    class Meta:
        global_type = False

-    label: List[str] = field(
+    label: list[str] = field(
        default_factory=list,
        metadata={
            "name": "Label",
@@ -174,12 +177,12 @@ class TopicLabels:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class TopicReferenceLinks:
    class Meta:
        global_type = False

-    reference_link: List[str] = field(
+    reference_link: list[str] = field(
        default_factory=list,
        metadata={
            "name": "ReferenceLink",
@@ -191,7 +194,7 @@ class TopicReferenceLinks:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class TopicRelatedTopicsRelatedTopic:
    class Meta:
        global_type = False
@@ -206,7 +209,7 @@ class TopicRelatedTopicsRelatedTopic:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class ViewPoint:
    viewpoint: Optional[str] = field(
        default=None,
@@ -246,7 +249,7 @@ class ViewPoint:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class Comment:
    date: XmlDateTime = field(
        metadata={
@@ -312,12 +315,12 @@ class Comment:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class HeaderFiles:
    class Meta:
        global_type = False

-    file: List[File] = field(
+    file: list[File] = field(
        default_factory=list,
        metadata={
            "name": "File",
@@ -327,12 +330,12 @@ class HeaderFiles:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class TopicDocumentReferences:
    class Meta:
        global_type = False

-    document_reference: List[DocumentReference] = field(
+    document_reference: list[DocumentReference] = field(
        default_factory=list,
        metadata={
            "name": "DocumentReference",
@@ -342,12 +345,12 @@ class TopicDocumentReferences:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class TopicRelatedTopics:
    class Meta:
        global_type = False

-    related_topic: List[TopicRelatedTopicsRelatedTopic] = field(
+    related_topic: list[TopicRelatedTopicsRelatedTopic] = field(
        default_factory=list,
        metadata={
            "name": "RelatedTopic",
@@ -357,12 +360,12 @@ class TopicRelatedTopics:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class TopicViewpoints:
    class Meta:
        global_type = False

-    view_point: List[ViewPoint] = field(
+    view_point: list[ViewPoint] = field(
        default_factory=list,
        metadata={
            "name": "ViewPoint",
@@ -372,7 +375,7 @@ class TopicViewpoints:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class Header:
    files: Optional[HeaderFiles] = field(
        default=None,
@@ -384,12 +387,12 @@ class Header:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class TopicComments:
    class Meta:
        global_type = False

-    comment: List[Comment] = field(
+    comment: list[Comment] = field(
        default_factory=list,
        metadata={
            "name": "Comment",
@@ -399,7 +402,7 @@ class TopicComments:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class Topic:
    reference_links: Optional[TopicReferenceLinks] = field(
        default=None,
@@ -596,7 +599,7 @@ class Topic:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class Markup:
    header: Optional[Header] = field(
        default=None,
@@ -1,8 +1,11 @@
+import sys
 from dataclasses import dataclass, field
 from typing import Optional

+DATACLASS_KWARGS = {} if sys.version_info < (3, 10) else {"slots": True, "kw_only": True}

-@dataclass(slots=True, kw_only=True)
+
+@dataclass(**DATACLASS_KWARGS)
 class Project:
    name: Optional[str] = field(
        default=None,
@@ -25,7 +28,7 @@ class Project:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class ProjectInfo:
    project: Project = field(
        metadata={
@@ -1,7 +1,10 @@
+import sys
 from dataclasses import dataclass, field

+DATACLASS_KWARGS = {} if sys.version_info < (3, 10) else {"slots": True, "kw_only": True}

-@dataclass(slots=True, kw_only=True)
+
+@dataclass(**DATACLASS_KWARGS)
 class Version:
    version_id: str = field(
        metadata={
@@ -1,6 +1,10 @@
+import sys
 from dataclasses import dataclass, field
 from enum import Enum
-from typing import List, Optional
+from typing import Optional
+
+
+DATACLASS_KWARGS = {} if sys.version_info < (3, 10) else {"slots": True, "kw_only": True}


 class BitmapFormat(Enum):
@@ -8,7 +12,7 @@ class BitmapFormat(Enum):
    JPG = "jpg"


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class Component:
    originating_system: Optional[str] = field(
        default=None,
@@ -39,7 +43,7 @@ class Component:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class Direction:
    x: float = field(
        metadata={
@@ -64,7 +68,7 @@ class Direction:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class Point:
    x: float = field(
        metadata={
@@ -89,7 +93,7 @@ class Point:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class ViewSetupHints:
    spaces_visible: bool = field(
        default=False,
@@ -114,7 +118,7 @@ class ViewSetupHints:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class Bitmap:
    format: BitmapFormat = field(
        metadata={
@@ -162,7 +166,7 @@ class Bitmap:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class ClippingPlane:
    location: Point = field(
        metadata={
@@ -180,12 +184,12 @@ class ClippingPlane:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class ComponentColoringColorComponents:
    class Meta:
        global_type = False

-    component: List[Component] = field(
+    component: list[Component] = field(
        default_factory=list,
        metadata={
            "name": "Component",
@@ -195,9 +199,9 @@ class ComponentColoringColorComponents:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class ComponentSelection:
-    component: List[Component] = field(
+    component: list[Component] = field(
        default_factory=list,
        metadata={
            "name": "Component",
@@ -206,12 +210,12 @@ class ComponentSelection:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class ComponentVisibilityExceptions:
    class Meta:
        global_type = False

-    component: List[Component] = field(
+    component: list[Component] = field(
        default_factory=list,
        metadata={
            "name": "Component",
@@ -220,7 +224,7 @@ class ComponentVisibilityExceptions:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class Line:
    start_point: Point = field(
        metadata={
@@ -238,7 +242,7 @@ class Line:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class OrthogonalCamera:
    """
    Attributes
@@ -288,7 +292,7 @@ class OrthogonalCamera:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class PerspectiveCamera:
    """
    Attributes
@@ -344,7 +348,7 @@ class PerspectiveCamera:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class ComponentColoringColor:
    class Meta:
        global_type = False
@@ -366,7 +370,7 @@ class ComponentColoringColor:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class ComponentVisibility:
    view_setup_hints: Optional[ViewSetupHints] = field(
        default=None,
@@ -391,12 +395,12 @@ class ComponentVisibility:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class VisualizationInfoBitmaps:
    class Meta:
        global_type = False

-    bitmap: List[Bitmap] = field(
+    bitmap: list[Bitmap] = field(
        default_factory=list,
        metadata={
            "name": "Bitmap",
@@ -405,12 +409,12 @@ class VisualizationInfoBitmaps:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class VisualizationInfoClippingPlanes:
    class Meta:
        global_type = False

-    clipping_plane: List[ClippingPlane] = field(
+    clipping_plane: list[ClippingPlane] = field(
        default_factory=list,
        metadata={
            "name": "ClippingPlane",
@@ -419,12 +423,12 @@ class VisualizationInfoClippingPlanes:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class VisualizationInfoLines:
    class Meta:
        global_type = False

-    line: List[Line] = field(
+    line: list[Line] = field(
        default_factory=list,
        metadata={
            "name": "Line",
@@ -433,9 +437,9 @@ class VisualizationInfoLines:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class ComponentColoring:
-    color: List[ComponentColoringColor] = field(
+    color: list[ComponentColoringColor] = field(
        default_factory=list,
        metadata={
            "name": "Color",
@@ -444,7 +448,7 @@ class ComponentColoring:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class Components:
    selection: Optional[ComponentSelection] = field(
        default=None,
@@ -469,7 +473,7 @@ class Components:
    )


-@dataclass(slots=True, kw_only=True)
+@dataclass(**DATACLASS_KWARGS)
 class VisualizationInfo:
    """
    VisualizationInfo documentation.
@@ -1,5 +1,6 @@
 """BCF XML V3 Topic handler."""

+from __future__ import annotations
 import datetime
 import uuid
 import zipfile
@@ -91,12 +92,12 @@ class TopicHandler:
        self._bim_snippet = value

    @property
-    def viewpoints(self) -> dict[str, "VisualizationInfoHandler"]:
+    def viewpoints(self) -> dict[str, VisualizationInfoHandler]:
        if self._viewpoints is None:
            self._viewpoints = self._load_viewpoints()
        return self._viewpoints

-    def _load_viewpoints(self) -> dict[str, "VisualizationInfoHandler"]:
+    def _load_viewpoints(self) -> dict[str, VisualizationInfoHandler]:
        if self._topic_dir and self.topic.viewpoints and (viewpoints := self.topic.viewpoints.view_point):
            return VisualizationInfoHandler.from_topic_viewpoints(self._topic_dir, viewpoints)
        return {}
@@ -139,7 +140,7 @@ class TopicHandler:
        topic_type: str = "",
        topic_status: str = "",
        xml_handler: Optional[AbstractXmlParserSerializer] = None,
-    ) -> "TopicHandler":
+    ) -> TopicHandler:
        """
        Create a new BCF topic.

@@ -1,6 +1,7 @@
 import uuid
 import zipfile
-from typing import Any, Iterable, Optional, Literal, Union
+from typing import Any, Optional, Literal, Union
+from collections.abc import Iterable

 import numpy as np
 from ifcopenshell import entity_instance
@@ -1,6 +1,6 @@
 """XML Parser and Serializer factories."""

-from typing import Optional, Protocol, Type, TypeVar
+from typing import Optional, Protocol, TypeVar

 from xsdata.formats.dataclass.context import XmlContext
 from xsdata.formats.dataclass.parsers import XmlParser
@@ -29,7 +29,7 @@ T = TypeVar("T")
 class AbstractXmlParserSerializer(Protocol):
    """XML Parser and serializer wrapper."""

-    def parse(self, xml: bytes, clazz: Type[T]) -> T:
+    def parse(self, xml: bytes, clazz: type[T]) -> T:
        """
        Parse an XML file to an object.

@@ -61,7 +61,7 @@ class XmlParserSerializer:
        self.parser = build_xml_parser(self.context)
        self.serializer = build_serializer(self.context)

-    def parse(self, xml: bytes, clazz: Type[T]) -> T:
+    def parse(self, xml: bytes, clazz: type[T]) -> T:
        """
        Parse an XML file to an object.

@@ -16,6 +16,7 @@ dependencies = [
    "xsdata>=24.4",
    "numpy",
    "ifcopenshell",
+    "requests",
 ]
 version = "0.0.0"
 classifiers = [
@@ -16,6 +16,7 @@
 # You should have received a copy of the GNU General Public License
 # along with Bonsai.  If not, see <http://www.gnu.org/licenses/>.

+SHELL := sh
 PYTHON:=python3.11
 PIP:=pip3.11
 PATCH:=patch
@@ -46,6 +47,7 @@ VERSION_MINOR:=$(shell cat '../../VERSION' | cut -d '.' -f 2)
 VERSION_PATCH:=$(shell cat '../../VERSION' | cut -d '.' -f 3)
 VERSION_DATE:=$(shell date '+%y%m%d')
 LAST_COMMIT_HASH:=$(shell git rev-parse HEAD)
+LAST_COMMIT_DATE:=$(shell git show -s --format=%cI)
 PYVERSION:=py310
 PYPI_IMP:=cp

@@ -85,7 +87,7 @@ BLENDER_PLATFORM:=windows-x64
 endif

 # Current build commit hash.
-OLD:=c49ca69
+OLD:=ec13294
 .PHONY: bump
 bump:
 ifndef NEW
@@ -136,7 +138,7 @@ endif
 	# odfpy doesn't come with its own wheel, so whee'l (get it?) create it ourselves!
 	cd build && . env/$(VENV_ACTIVATE) && $(PIP) wheel odfpy --wheel-dir=./wheels
 	# Required by IFCCityJSON
-	cd build && . env/$(VENV_ACTIVATE) && $(PIP) download cjio --dest=./wheels
+	cd build && . env/$(VENV_ACTIVATE) && $(PIP) download "cjio >=0.8, <0.10" --dest=./wheels
 	# Required in general for sorting all sorts of stuff in a nice way
 	cd build && . env/$(VENV_ACTIVATE) && $(PIP) download natsort --dest=./wheels
 	# Provides express rule validation for ifcopenshell.validate
@@ -191,13 +193,15 @@ else
 	cd build && . env/$(VENV_ACTIVATE) && $(PIP) download pyradiance $(PYPI_PLATFORM) --python-version $(PYPI_VERSION) --implementation $(PYPI_IMP) --only-binary=:all: --dest=./wheels
 endif

+	# jQuery is required for web UI functionality
+	cd build/bonsai/bim/data/webui/static/js/ && wget https://cdn.jsdelivr.net/npm/jquery@3.7.1/dist/jquery.min.js
+
 	# Provides jsgantt-improved supports for web-based construction sequencing gantt charts
 	cd build/bonsai/bim/data/gantt/ && wget https://raw.githubusercontent.com/jsGanttImproved/jsgantt-improved/master/dist/jsgantt.js
 	cd build/bonsai/bim/data/gantt/ && wget https://raw.githubusercontent.com/jsGanttImproved/jsgantt-improved/master/dist/jsgantt.css

 	# Provides IFCJSON functionality
-	# TODO: replace with main repo if https://github.com/IFCJSON-Team/IFC2JSON_python/pull/3 is merged.
-	cd build && wget -O ifc2json.zip https://github.com/Moult/IFC2JSON_python/archive/refs/heads/feature-ios-v0.8.0.zip
+	cd build && wget -O ifc2json.zip https://github.com/IFCJSON-Team/IFC2JSON_python/archive/refs/heads/master.zip
 	cd build && unzip ifc2json.zip && rm ifc2json.zip
 	# IFCJSON doesn't have pyproject.toml, so we use python command.
 	cd build && . env/$(VENV_ACTIVATE) && cd IFC2JSON_python-*/file_converters && \
@@ -254,6 +258,7 @@ ifeq ($(IS_STABLE), TRUE)
 else
 	$(SED) "s/0.0.0/$(VERSION)-alpha$(VERSION_DATE)/" build/bonsai/blender_manifest.toml
 	$(SED) "s/8888888/$(LAST_COMMIT_HASH)/" build/bonsai/__init__.py
+	$(SED) "s/9999999/$(LAST_COMMIT_DATE)/" build/bonsai/__init__.py
 	$(SED) 's/version = "0.0.0"/version = "$(VERSION)-alpha$(VERSION_DATE)"/' build/pyproject.toml
 endif

@@ -28,6 +28,10 @@ IN_BLENDER = sys.modules.get("bpy", None)
 if IN_BLENDER:
    import bpy

+# This file is executed twice - first as a bonsai-extension
+# and then as a bonsai-package.
+IN_PACKAGE = __package__ == "bonsai"
+
 import re
 import platform
 import traceback
@@ -36,10 +40,12 @@ import uuid
 import shutil
 from collections import deque
 from pathlib import Path
-from typing import Union, Any, Generator
+from typing import Union, Any
+from collections.abc import Generator


 last_commit_hash = "8888888"
+last_commit_date = "9999999"


 def get_last_commit_hash() -> Union[str, None]:
@@ -51,6 +57,12 @@ def get_last_commit_hash() -> Union[str, None]:
    return last_commit_hash[:7]


+def get_last_commit_date() -> Union[str, None]:
+    if last_commit_date == str(9_999999):
+        return None
+    return last_commit_date
+
+
 # Accessed from bonsai extension:
 bbim_semver: dict[str, Any] = {}

@@ -96,6 +108,7 @@ def get_debug_info():
        "blender_version": bpy.app.version_string,
        "bonsai_version": bbim_version,
        "bonsai_commit_hash": get_last_commit_hash(),
+        "bonsai_commit_date": get_last_commit_date(),
        "last_actions": last_actions,
        "last_error": last_error,
    }
@@ -210,16 +223,21 @@ if IN_BLENDER:
        info["binary_python_version"] = version
        return info

-    try:
-        import git
+    def update_commit_data() -> None:
+        try:
+            import git

-        # We can't just use __file__ as bonsai/__init__.py is typically not symlinked
-        # as Blender have errors symlinking main addon package file.
-        path = Path(__file__).resolve().parent
-        repo = git.Repo(str(path), search_parent_directories=True)
-        last_commit_hash = repo.head.object.hexsha
-    except:
-        pass
+            global last_commit_hash
+            global last_commit_date
+            path = Path(__file__).resolve().parent
+            repo = git.Repo(str(path), search_parent_directories=True)
+            last_commit_hash = repo.head.object.hexsha
+            last_commit_date = repo.head.object.committed_datetime.isoformat()
+        except:
+            pass
+
+    if IN_PACKAGE:
+        update_commit_data()

    try:
        import ifcopenshell.api
@@ -235,6 +253,12 @@ if IN_BLENDER:

        ifcopenshell.api.add_pre_listener("*", "action_logger", log_api)

+        def purge_cache():
+            """Purge cache left from previous session (e.g. after reload or update)."""
+            import bonsai.tool as tool
+
+            tool.Blender.get_bonsai_version.cache_clear()
+
        def register():
            if platform.system() == "Windows":
                clean_up_dlls_safe_links()
@@ -252,6 +276,7 @@ if IN_BLENDER:
                bonsai.REINSTALLED_BBIM_VERSION = current_version

            bonsai.bim.register()
+            purge_cache()

        def unregister():
            if platform.system() == "Windows":
@@ -20,8 +20,10 @@ import os
 import bpy
 import bpy.utils.previews
 import importlib
+from bpy_extras.io_utils import ImportHelper, ExportHelper
 from . import handler, ui, prop, operator
-from typing import Callable, Union
+from typing import Union
+from collections.abc import Callable

 try:
    from bonsai.translations import translations_dict
@@ -83,6 +85,7 @@ modules = {
    "covering": None,
    "web": None,
    "light": None,
+    "alignment": None,
    # Uncomment this line to enable loading of the demo module. Happy hacking!
    # The name "demo" must correlate to a folder name in `bim/module/`.
    # "demo": None,
@@ -94,14 +97,16 @@ for name in modules.keys():


 classes = [
-    operator.AddIfcFile,
    operator.BIM_OT_add_section_plane,
    operator.BIM_OT_delete_object,
    operator.BIM_OT_remove_section_plane,
    operator.BIM_OT_select_entity,
+    operator.BIM_OT_select_entity_by_guid,
    operator.BIM_OT_select_object,
    operator.BIM_OT_show_description,
    operator.BIM_OT_multiple_file_selector,
+    operator.BIM_OT_attribute_add_subitem,
+    operator.BIM_OT_attribute_remove_subitem,
    operator.ClippingPlaneCutWithCappings,
    operator.CloseBlendWarning,
    operator.CloseError,
@@ -113,15 +118,16 @@ classes = [
    operator.OpenUpstream,
    operator.OpenUri,
    operator.ReloadIfcFile,
-    operator.RemoveIfcFile,
    operator.RevertClippingPlaneCut,
    operator.SelectDir,
    operator.SelectIfcFile,
    operator.SelectURIAttribute,
    operator.SetTab,
    operator.SwitchTab,
+    operator.ShowSystemInfo,
    prop.StrProperty,
    operator.BIM_OT_enum_property_search,  # /!\ Register AFTER prop.StrProperty
+    operator.BIM_OT_attribute_search_values,
    prop.ObjProperty,
    prop.MultipleFileSelect,
    prop.Attribute,
@@ -130,7 +136,6 @@ classes = [
    prop.BIMProperties,
    prop.IfcParameter,
    prop.PsetQto,
-    prop.GlobalId,
    prop.BIMObjectProperties,
    prop.BIMCollectionProperties,
    prop.BIMMeshProperties,
@@ -141,6 +146,7 @@ classes = [
    ui.BIM_UL_clipping_plane,
    ui.BIM_UL_generic,
    ui.BIM_UL_topics,
+    ui.DocPreferences,
    ui.BIM_ADDON_preferences,
    # Tabs panel
    ui.BIM_PT_tabs,
@@ -148,10 +154,10 @@ classes = [
    ui.BIM_PT_tab_new_project_wizard,
    ui.BIM_PT_tab_project_info,
    ui.BIM_PT_tab_spatial,
+    ui.BIM_PT_tab_grouping_and_filtering,
    ui.BIM_PT_tab_project_setup,
    ui.BIM_PT_tab_geometry,
    ui.BIM_PT_tab_stakeholders,
-    ui.BIM_PT_tab_grouping_and_filtering,
    # Object information
    ui.BIM_PT_tab_object_metadata,
    ui.BIM_PT_tab_misc,
@@ -220,7 +226,12 @@ def on_register(scene):

 def register():
    for cls in classes:
+        # Prevent crashes in Blender 4.4.0, see #6420.
+        if issubclass(cls, (ImportHelper, ExportHelper)):
+            assert getattr(cls, "bl_description", "") or cls.__doc__, cls
+
        bpy.utils.register_class(cls)
+
    bpy.app.handlers.depsgraph_update_post.append(on_register)
    bpy.app.handlers.undo_post.append(handler.undo_post)
    bpy.app.handlers.redo_post.append(handler.redo_post)
@@ -47,8 +47,6 @@
            "scene.render.simplify_gpencil_shader_fx": true,
            "scene.render.simplify_gpencil_tint": true,
            "scene.render.simplify_gpencil_view_fill": true,
-            "scene.render.simplify_shadows": 1.0,
-            "scene.render.simplify_shadows_render": 1.0,
            "scene.render.simplify_subdivision": 6,
            "scene.render.simplify_subdivision_render": 6,
            "scene.render.simplify_volumes": 1.0,
@@ -147,7 +145,7 @@
            "scene.display.shading.use_scene_world_render": false,
            "scene.display.shading.use_studiolight_view_rotation": true,
            "scene.display.shading.use_world_space_lighting": false,
-            "scene.display.shading.wireframe_color_type": "MATERIAL",
+            "scene.display.shading.wireframe_color_type": "THEME",
            "scene.display.shading.xray_alpha": 0.5,
            "scene.display.shading.xray_alpha_wireframe": 0.0,
            "scene.display.light_direction": [
@@ -162,7 +160,6 @@
            "scene.display.shadow_focus": 0.0,
            "scene.display.shadow_shift": 0.10000000149011612,
            "scene.display.viewport_aa": "FXAA",
-            "space.overlay.backwire_opacity": 0.5,
            "space.overlay.bone_wire_alpha": 1.0,
            "space.overlay.display_handle": "SELECTED",
            "space.overlay.fade_inactive_alpha": 0.4000000059604645,
@@ -189,7 +186,6 @@
            "space.overlay.show_edge_crease": true,
            "space.overlay.show_edge_seams": true,
            "space.overlay.show_edge_sharp": true,
-            "space.overlay.show_edges": false,
            "space.overlay.show_extra_edge_angle": false,
            "space.overlay.show_extra_edge_length": false,
            "space.overlay.show_extra_face_angle": false,
@@ -208,7 +204,6 @@
            "space.overlay.show_motion_paths": true,
            "space.overlay.show_object_origins": false,
            "space.overlay.show_object_origins_all": false,
-            "space.overlay.show_occlude_wire": false,
            "space.overlay.show_onion_skins": false,
            "space.overlay.show_ortho_grid": true,
            "space.overlay.show_outline_selected": true,
@@ -298,8 +293,6 @@
            "scene.render.simplify_gpencil_shader_fx": true,
            "scene.render.simplify_gpencil_tint": true,
            "scene.render.simplify_gpencil_view_fill": true,
-            "scene.render.simplify_shadows": 1.0,
-            "scene.render.simplify_shadows_render": 1.0,
            "scene.render.simplify_subdivision": 6,
            "scene.render.simplify_subdivision_render": 6,
            "scene.render.simplify_volumes": 1.0,
@@ -398,7 +391,7 @@
            "scene.display.shading.use_scene_world_render": false,
            "scene.display.shading.use_studiolight_view_rotation": true,
            "scene.display.shading.use_world_space_lighting": false,
-            "scene.display.shading.wireframe_color_type": "MATERIAL",
+            "scene.display.shading.wireframe_color_type": "THEME",
            "scene.display.shading.xray_alpha": 0.5,
            "scene.display.shading.xray_alpha_wireframe": 0.0,
            "scene.display.light_direction": [
@@ -413,7 +406,6 @@
            "scene.display.shadow_focus": 0.0,
            "scene.display.shadow_shift": 0.10000000149011612,
            "scene.display.viewport_aa": "FXAA",
-            "space.overlay.backwire_opacity": 0.5,
            "space.overlay.bone_wire_alpha": 1.0,
            "space.overlay.display_handle": "SELECTED",
            "space.overlay.fade_inactive_alpha": 0.4000000059604645,
@@ -440,7 +432,6 @@
            "space.overlay.show_edge_crease": true,
            "space.overlay.show_edge_seams": true,
            "space.overlay.show_edge_sharp": true,
-            "space.overlay.show_edges": false,
            "space.overlay.show_extra_edge_angle": false,
            "space.overlay.show_extra_edge_length": false,
            "space.overlay.show_extra_face_angle": false,
@@ -459,7 +450,6 @@
            "space.overlay.show_motion_paths": true,
            "space.overlay.show_object_origins": false,
            "space.overlay.show_object_origins_all": false,
-            "space.overlay.show_occlude_wire": false,
            "space.overlay.show_onion_skins": false,
            "space.overlay.show_ortho_grid": true,
            "space.overlay.show_outline_selected": true,
@@ -509,6 +499,10 @@
                0.05087608844041824,
                0.05087608844041824
            ],
+            "scene.eevee.use_shadows": true,
+            "scene.eevee.shadow_ray_count": 1,
+            "scene.eevee.shadow_step_count": 6,
+            "scene.eevee.shadow_resolution_scale": 1.0,
            "scene.render.bake_bias": 0.0010000000474974513,
            "scene.render.bake_margin": 16,
            "scene.render.bake_margin_type": "ADJACENT_FACES",
@@ -520,7 +514,7 @@
            "scene.render.border_min_x": 0.0,
            "scene.render.border_min_y": 0.0,
            "scene.render.dither_intensity": 1.0,
-            "scene.render.engine": "BLENDER_EEVEE",
+            "scene.render.engine": "BLENDER_EEVEE_NEXT",
            "scene.render.film_transparent": false,
            "scene.render.filter_size": 1.5,
            "scene.render.fps": 24,
@@ -549,8 +543,6 @@
            "scene.render.simplify_gpencil_shader_fx": true,
            "scene.render.simplify_gpencil_tint": true,
            "scene.render.simplify_gpencil_view_fill": true,
-            "scene.render.simplify_shadows": 1.0,
-            "scene.render.simplify_shadows_render": 1.0,
            "scene.render.simplify_subdivision": 6,
            "scene.render.simplify_subdivision_render": 6,
            "scene.render.simplify_volumes": 1.0,
@@ -649,7 +641,7 @@
            "scene.display.shading.use_scene_world_render": false,
            "scene.display.shading.use_studiolight_view_rotation": true,
            "scene.display.shading.use_world_space_lighting": false,
-            "scene.display.shading.wireframe_color_type": "MATERIAL",
+            "scene.display.shading.wireframe_color_type": "THEME",
            "scene.display.shading.xray_alpha": 0.5,
            "scene.display.shading.xray_alpha_wireframe": 0.0,
            "scene.display.light_direction": [
@@ -664,7 +656,6 @@
            "scene.display.shadow_focus": 0.0,
            "scene.display.shadow_shift": 0.10000000149011612,
            "scene.display.viewport_aa": "FXAA",
-            "space.overlay.backwire_opacity": 0.5,
            "space.overlay.bone_wire_alpha": 1.0,
            "space.overlay.display_handle": "SELECTED",
            "space.overlay.fade_inactive_alpha": 0.4000000059604645,
@@ -691,7 +682,6 @@
            "space.overlay.show_edge_crease": true,
            "space.overlay.show_edge_seams": true,
            "space.overlay.show_edge_sharp": true,
-            "space.overlay.show_edges": false,
            "space.overlay.show_extra_edge_angle": false,
            "space.overlay.show_extra_edge_length": false,
            "space.overlay.show_extra_face_angle": false,
@@ -710,7 +700,6 @@
            "space.overlay.show_motion_paths": true,
            "space.overlay.show_object_origins": true,
            "space.overlay.show_object_origins_all": false,
-            "space.overlay.show_occlude_wire": false,
            "space.overlay.show_onion_skins": false,
            "space.overlay.show_ortho_grid": true,
            "space.overlay.show_outline_selected": true,
@@ -1,7 +1,7 @@
 ISO-10303-21;
 HEADER;
 FILE_DESCRIPTION(('ViewDefinition[DesignTransferView]'),'2;1');
-FILE_NAME('/dev/null','2024-03-03T16:03:58+11:00',(),(),'IfcOpenShell v0.7.0-eaa2aa05a','IfcOpenShell v0.7.0-eaa2aa05a','Nobody');
+FILE_NAME('/dev/null','2025-03-27T17:30:27+05:00',(''),(''),'IfcOpenShell 0.0.0','IfcOpenShell 0.0.0','Nobody');
 FILE_SCHEMA(('IFC4'));
 ENDSEC;
 DATA;
@@ -29,7 +29,7 @@ DATA;
 #22=IFCMATERIALLAYERSET((#24),$,$);
 #23=IFCRELASSOCIATESMATERIAL('0khP_Smdj12f2JrOTRbRKj',$,$,$,(#21),#22);
 #24=IFCMATERIALLAYER(#20,0.05,$,$,$,$,$);
-#25=IFCRELDECLARES('31JriXdev6BP2sC9lcxdC1',$,$,$,#2,(#26,#48,#72,#59,#92,#30,#96,#63,#21,#54,#87,#210,#153,#34,#67,#38,#82,#77,#42));
+#25=IFCRELDECLARES('31JriXdev6BP2sC9lcxdC1',$,$,$,#2,(#59,#92,#38,#82,#30,#96,#77,#63,#42,#54,#87,#153,#34,#21,#67,#210,#26,#48,#72));
 #26=IFCWALLTYPE('3R5onkTtX1IxdCMPoThRaw',$,'WAL100',$,$,$,$,$,$,.NOTDEFINED.);
 #27=IFCMATERIALLAYERSET((#29),$,$);
 #28=IFCRELASSOCIATESMATERIAL('0$mXRPCT16nP6Q70XFNvZv',$,$,$,(#26),#27);
@@ -1,11 +1,11 @@
 ISO-10303-21;
 HEADER;
-FILE_DESCRIPTION((),'2;1');
-FILE_NAME('EPset_Drawing.ifc','2020-01-01T00:00:00',(),(),'EPset_Drawing','EPset_Drawing',$);
+FILE_DESCRIPTION($,'2;1');
+FILE_NAME('EPset_Drawing.ifc','2020-01-01T00:00:00',$,$,'EPset_Drawing','EPset_Drawing',$);
 FILE_SCHEMA(('IFC4'));
 ENDSEC;
 DATA;
-#1=IFCPROPERTYSETTEMPLATE('2JhNIvqZrFnAgxfhK0XVQX',$,'EPset_Drawing','',.PSET_OCCURRENCEDRIVEN.,'IfcAnnotation/DRAWING',(#2,#3,#4,#5,#6,#7,#8,#9,#10,#11,#12,#13,#14,#15,#16,#17,#18,#19,#20,#21,#22,#23,#24,#25,#26,#27));
+#1=IFCPROPERTYSETTEMPLATE('2JhNIvqZrFnAgxfhK0XVQX',$,'EPset_Drawing','',.PSET_OCCURRENCEDRIVEN.,'IfcAnnotation/DRAWING',(#23,#22,#27,#24,#19,#12,#26,#9,#8,#7,#6,#4,#18,#11,#5,#20,#25,#14,#10,#17,#28,#16,#3,#21,#13,#15,#2));
 #2=IFCSIMPLEPROPERTYTEMPLATE('23JavTMk98ZxXhrUEnjAcf',$,'TargetView','',.P_SINGLEVALUE.,'IfcLabel',$,$,$,$,$,.READWRITE.);
 #3=IFCSIMPLEPROPERTYTEMPLATE('1yVWUt5H9DAOuu0OaMMLpe',$,'Scale','The scale of this drawing represented as a numerator and denominator, such as 1/100',.P_SINGLEVALUE.,'IfcLabel',$,$,$,$,$,.READWRITE.);
 #4=IFCSIMPLEPROPERTYTEMPLATE('3gsuPBtU93b8f0gg1pjkq6',$,'HumanScale','The scale of this drawing in human readable format, such as 1:100',.P_SINGLEVALUE.,'IfcLabel',$,$,$,$,$,.READWRITE.);
@@ -14,7 +14,7 @@ DATA;
 #7=IFCSIMPLEPROPERTYTEMPLATE('2j2ZEZR8X5tONm7kli5hM6',$,'HasLinework','',.P_SINGLEVALUE.,'IfcBoolean',$,$,$,$,$,.READWRITE.);
 #8=IFCSIMPLEPROPERTYTEMPLATE('1ttChRysH9UuEX2FeMj5Hu',$,'HasAnnotation','',.P_SINGLEVALUE.,'IfcBoolean',$,$,$,$,$,.READWRITE.);
 #9=IFCSIMPLEPROPERTYTEMPLATE('2NPPxuABv1huDTVh32TFgw',$,'GlobalReferencing','',.P_SINGLEVALUE.,'IfcBoolean',$,$,$,$,$,.READWRITE.);
-#10=IFCSIMPLEPROPERTYTEMPLATE('10hT_1zrzEbRRKMXYAWvtD',$,'Metadata','',.P_SINGLEVALUE.,'IfcText',$,$,$,$,$,.READWRITE.);
+#10=IFCSIMPLEPROPERTYTEMPLATE('10hT_1zrzEbRRKMXYAWvtD',$,'Metadata','Comma separated list of selector expressions to evaluate for each drawing elementand add results to their ''class'' attribute.\X2\000A\X0\E.g. ''Name, id'' would add to ''class'' value similar to ''Name-Wall id-1220''.\X2\000A\X0\Then it can be used to applied css styles based on the resulting class.\X2\000A\X0\If attribute is not present on the element, then it won''t be added to it''s ''class''.',.P_SINGLEVALUE.,'IfcText',$,$,$,$,$,.READWRITE.);
 #11=IFCSIMPLEPROPERTYTEMPLATE('3Z0BXPSG5CWgtI33ioV7aj',$,'Include','Selector expression to include ifc elements in the drawing',.P_SINGLEVALUE.,'IfcText',$,$,$,$,$,.READWRITE.);
 #12=IFCSIMPLEPROPERTYTEMPLATE('1RVts_g3PAw98PJA2yL3bO',$,'Exclude','Selector expression to exclude ifc elements in the drawing',.P_SINGLEVALUE.,'IfcText',$,$,$,$,$,.READWRITE.);
 #13=IFCSIMPLEPROPERTYTEMPLATE('0c1$8NpYDEaBiJrj16jHIo',$,'Stylesheet','',.P_SINGLEVALUE.,'IfcText',$,$,$,$,$,.READWRITE.);
@@ -32,5 +32,6 @@ DATA;
 #25=IFCSIMPLEPROPERTYTEMPLATE('3LHwCrOcb6Y8ozfJZ7Ay$c',$,'LineworkMode','Method to use for line work',.P_SINGLEVALUE.,'IfcLabel',$,$,$,$,$,.READWRITE.);
 #26=IFCSIMPLEPROPERTYTEMPLATE('2iwERDOW55Pf4hCbuFRe1Q',$,'FillMode','Method to fill areas seen in projection',.P_SINGLEVALUE.,'IfcLabel',$,$,$,$,$,.READWRITE.);
 #27=IFCSIMPLEPROPERTYTEMPLATE('1YF$qLzBzF19Io8aB2N8cE',$,'CutMode','Method for cutting geometry',.P_SINGLEVALUE.,'IfcLabel',$,$,$,$,$,.READWRITE.);
+#28=IFCSIMPLEPROPERTYTEMPLATE('1YSnFzurrEyRNtoLdmmddP',$,'BringToFront','The objects with these SVG classes will render in front of all other objects.Ex: IfcBeam, IfcColumn',.P_SINGLEVALUE.,'IfcText',$,$,$,$,$,.READWRITE.);
 ENDSEC;
 END-ISO-10303-21;
@@ -28,11 +28,13 @@ DATA;
 #21=IFCSIMPLEPROPERTYTEMPLATE('1UDakJ5_f7kBhggNSW4$h5',$,'SymbolsPath','Default symbols SVG',.P_SINGLEVALUE.,'IfcLabel',$,$,$,$,$,.READWRITE.);
 #22=IFCSIMPLEPROPERTYTEMPLATE('0d53LEtgLDQxnv__NfgH7i',$,'PatternsPath','Default patterns SVG',.P_SINGLEVALUE.,'IfcLabel',$,$,$,$,$,.READWRITE.);
 #23=IFCSIMPLEPROPERTYTEMPLATE('26qFNMv7nCHgU6Jd7Anga5',$,'ShadingStylesPath','Default shading styles',.P_SINGLEVALUE.,'IfcLabel',$,$,$,$,$,.READWRITE.);
-#24=IFCPROPERTYSETTEMPLATE('0I9merLinF5Ap$aZwaclgm',$,'BBIM_Dimension','',.PSET_TYPEDRIVENOVERRIDE.,'IfcAnnotation/DIMENSION,IfcTypeProduct',(#25,#26,#27,#28));
+#24=IFCPROPERTYSETTEMPLATE('0I9merLinF5Ap$aZwaclgm',$,'BBIM_Dimension','',.PSET_TYPEDRIVENOVERRIDE.,'IfcAnnotation/DIMENSION,IfcAnnotation/RADIUS,IfcAnnotation/DIAMETER,IfcTypeProduct',(#25,#26,#27,#28,#30));
 #25=IFCSIMPLEPROPERTYTEMPLATE('1rL2AbQsXD8RbpoWH5pYOV',$,'ShowDescriptionOnly','Hide the measurement values and show only annotation description',.P_SINGLEVALUE.,'IfcBoolean',$,$,$,$,$,.READWRITE.);
 #26=IFCSIMPLEPROPERTYTEMPLATE('0SVyOfB0rC2xNfdRYf3XvY',$,'SuppressZeroInches','Suppress 0 inch values in dimension annotation text (for example: 12'' - 0" -> 12'')',.P_SINGLEVALUE.,'IfcBoolean',$,$,$,$,$,.READWRITE.);
 #27=IFCSIMPLEPROPERTYTEMPLATE('2bUmj458PBqPAtUoI3MXsb',$,'TextPrefix','Text to add before annotation measurement value',.P_SINGLEVALUE.,'IfcLabel',$,$,$,$,$,.READWRITE.);
 #28=IFCSIMPLEPROPERTYTEMPLATE('0bnzttUb9BPuN597uNTXOE',$,'TextSuffix','Text to add after annotation measurement value',.P_SINGLEVALUE.,'IfcLabel',$,$,$,$,$,.READWRITE.);
 #29=IFCSIMPLEPROPERTYTEMPLATE('2pJmUDpB50VBdCOib1zcJJ',$,'Newline_At','',.P_SINGLEVALUE.,'IfcInteger',$,$,$,$,$,.READWRITE.);
+#30=IFCSIMPLEPROPERTYTEMPLATE('2TJn72t_v2cvBUG916Dpev',$,'CustomUnit','Dimension''s custom unit',.P_ENUMERATEDVALUE.,'IfcText',$,#31,$,$,$,.READWRITE.);
+#31=IFCPROPERTYENUMERATION('CustomUnit',(IFCTEXT('Feet and Inches - Fractional'),IFCTEXT('Feet - Decimal'),IFCTEXT('Inches - Fractional'),IFCTEXT('Inches - Decimal'),IFCTEXT('Meters'),IFCTEXT('Decimeters'),IFCTEXT('Centimeters'),IFCTEXT('Millimeters')),$);
 ENDSEC;
 END-ISO-10303-21;
@@ -0,0 +1 @@
+../../libraries/IFC2X3 Demo Library.ifc
@@ -0,0 +1 @@
+../../libraries/IFC4 Demo Library.ifc
@@ -0,0 +1 @@
+../../libraries/IFC4X3 Demo Library.ifc
@@ -0,0 +1 @@
+SVG [mustache](https://mustache.github.io/) templates that will be used for sheets and fill be filled with infromation from the sheet's IfcDocumentInformation attributes (e.g. Identification, Name, Revision, etc).
@@ -21,7 +21,7 @@
    />
    <script
      type="text/javascript"
-      src="https://code.jquery.com/jquery-3.6.0.min.js"
+      src="/static/js/jquery.min.js"
    ></script>
    <script
      type="text/javascript"
@@ -19,7 +19,7 @@
    />
    <script
      type="text/javascript"
-      src="https://code.jquery.com/jquery-3.6.0.min.js"
+      src="/static/js/jquery.min.js"
    ></script>
    <script
      type="text/javascript"
@@ -24,7 +24,7 @@
    />
    <script
      type="text/javascript"
-      src="https://code.jquery.com/jquery-3.6.0.min.js"
+      src="/static/js/jquery.min.js"
    ></script>
    <script
      type="text/javascript"
@@ -17,7 +17,7 @@
    />
    <script
      type="text/javascript"
-      src="https://code.jquery.com/jquery-3.6.0.min.js"
+      src="/static/js/jquery.min.js"
    ></script>
    <script
      type="text/javascript"
@@ -21,7 +21,7 @@
    />
    <script
      type="text/javascript"
-      src="https://code.jquery.com/jquery-3.6.0.min.js"
+      src="/static/js/jquery.min.js"
    ></script>
    <script
      type="text/javascript"
@@ -47,7 +47,6 @@ class IfcExporter:
        self.set_header()
        IfcStore.update_cache()
        self.sync_all_objects()
-        self.sync_edited_objects()
        tool.Project.save_linked_models_to_ifc()
        extension = self.ifc_export_settings.output_file.split(".")[-1].lower()
        if extension == "ifczip":
@@ -77,11 +76,7 @@ class IfcExporter:
    def set_header(self):
        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()
-            .replace(tzinfo=datetime.timezone.utc)
-            .astimezone()
-            .replace(microsecond=0)
-            .isoformat()
+            datetime.datetime.utcnow().replace(tzinfo=datetime.UTC).astimezone().replace(microsecond=0).isoformat()
        )
        self.file.wrapped_data.header.file_name.preprocessor_version = "IfcOpenShell {}".format(ifcopenshell.version)
        self.file.wrapped_data.header.file_name.originating_system = "{} {}".format(
@@ -101,41 +96,12 @@ class IfcExporter:
                result = self.sync_object_placement(obj)
                if result:
                    results.append(result)
-                result = self.sync_object_material(obj)
-                # TODO: sync_object_material always returns None
-                # so it's never really appended
                if result:
                    results.append(result)
            except ReferenceError:
                pass  # The object is likely deleted
        return results

-    def sync_edited_objects(self) -> list[ifcopenshell.entity_instance]:
-        results: list[ifcopenshell.entity_instance] = []
-        for obj in IfcStore.edited_objs.copy():
-            if not obj:
-                continue
-            if not tool.Blender.is_valid_data_block(obj):
-                continue
-            element = tool.Ifc.get_entity(obj)
-            if element:
-                results.append(element)
-            bpy.ops.bim.update_representation(obj=obj.name)
-        IfcStore.edited_objs.clear()
-        return results
-
-    def sync_object_material(self, obj: bpy.types.Object) -> None:
-        if not obj.data or not isinstance(obj.data, bpy.types.Mesh):
-            return
-        if not self.has_changed_materials(obj):
-            return
-        bpy.ops.bim.update_representation(obj=obj.name)
-
-    def has_changed_materials(self, obj: bpy.types.Object) -> bool:
-        mprops = tool.Geometry.get_mesh_props(obj.data)
-        checksum = mprops.material_checksum
-        return checksum != tool.Geometry.get_material_checksum(obj)
-
    def sync_object_placement(self, obj: bpy.types.Object) -> Union[ifcopenshell.entity_instance, None]:
        element = self.file.by_id(tool.Blender.get_object_bim_props(obj).ifc_definition_id)
        if tool.Geometry.is_scaled(obj):
@@ -24,16 +24,18 @@ import ifcopenshell.util.unit
 import ifcopenshell.api.owner.settings
 import bonsai.bim
 import bonsai.tool as tool
+import weakref
 from bpy.app.handlers import persistent
 from bonsai.bim.ifc import IfcStore
 from bonsai.bim.module.model.data import AuthoringData
 from bonsai.bim.module.aggregate.decorator import AggregateDecorator
 from bonsai.bim.module.georeference.decorator import GeoreferenceDecorator
-from bonsai.bim.module.model.decorator import WallAxisDecorator, SlabDirectionDecorator
+from bonsai.bim.module.model.decorator import WallAxisDecorator, SlabDirectionDecorator, BoundingBoxDecorator
 from bonsai.bim.module.nest.decorator import NestDecorator
 from mathutils import Vector
 from math import cos
-from typing import Union, Callable
+from typing import Union
+from collections.abc import Callable


 cwd = os.path.dirname(os.path.realpath(__file__))
@@ -256,38 +258,80 @@ def redo_post(scene: bpy.types.Scene) -> None:
    tool.Ifc.rebuild_element_maps()


+# Cache is important as those entities will be retrieved very often,
+# for every IfcOwnerHistory creation or update.
+class SettingsCache:
+    APPLICATION_ID: Union[int, None] = None
+    USER_ID: Union[int, None] = None
+
+    _file: Union[weakref.ReferenceType[ifcopenshell.file], None] = None
+
+    @classmethod
+    def get_file(cls) -> Union[ifcopenshell.file, None]:
+        if cls._file is None:
+            return None
+        return cls._file()
+
+    @classmethod
+    def set_file(cls, file: ifcopenshell.file) -> None:
+        cls._file = weakref.ref(file)
+
+
 def get_application(ifc: ifcopenshell.file) -> ifcopenshell.entity_instance:
-    # TODO: cache this for even faster application retrieval. It honestly makes a difference on long scripts.
-    version = tool.Blender.get_bonsai_version()
+    if SettingsCache.get_file() is ifc and SettingsCache.APPLICATION_ID is not None:
+        try:
+            app = ifc.by_id(SettingsCache.APPLICATION_ID)
+            return app
+        except RuntimeError:
+            pass
+
+    # Use only main part from the version to avoid flooding advanced users projects with IfcApplications.
+    version = tool.Blender.get_bonsai_version().split("-")[0]
+    identifier = f"Bonsai-{version}"
    for element in ifc.by_type("IfcApplication"):
-        if element.ApplicationIdentifier == "Bonsai" and element.Version == version:
+        if element.ApplicationIdentifier == identifier:
            return element
-    return ifcopenshell.api.run(
-        "owner.add_application",
+    application_developer = next((org for org in ifc.by_type("IfcOrganization") if org.Name == "IfcOpenShell"), None)
+    application = ifcopenshell.api.owner.add_application(
        ifc,
+        application_developer=application_developer,
        version=version,
        application_full_name="Bonsai",
-        application_identifier="Bonsai",
+        application_identifier=identifier,
    )
+    SettingsCache.APPLICATION_ID = application.id()
+    SettingsCache.set_file(ifc)
+    return application


 def get_user(ifc: ifcopenshell.file) -> Union[ifcopenshell.entity_instance, None]:
    # TODO: cache this for even faster application retrieval. It honestly makes a difference on long scripts.
+    if SettingsCache.get_file() is ifc and SettingsCache.USER_ID is not None:
+        try:
+            user = ifc.by_id(SettingsCache.USER_ID)
+            return user
+        except RuntimeError:
+            pass
+
    if pao := next(iter(ifc.by_type("IfcPersonAndOrganization")), None):
+        SettingsCache.USER_ID = pao.id()
+        SettingsCache.set_file(ifc)
        return pao
    elif ifc.schema == "IFC2X3":
        if (person := next(iter(ifc.by_type("IfcPerson")), None)) is None:
-            person = tool.Ifc.run("owner.add_person")
+            person = ifcopenshell.api.owner.add_person(ifc)
        if (organization := next(iter(ifc.by_type("IfcOrganization")), None)) is None:
-            organization = tool.Ifc.run("owner.add_organisation")
-        pao = tool.Ifc.run("owner.add_person_and_organisation", person=person, organisation=organization)
+            organization = ifcopenshell.api.owner.add_organisation(ifc)
+        pao = ifcopenshell.api.owner.add_person_and_organisation(ifc, person=person, organisation=organization)
+        SettingsCache.USER_ID = pao.id()
+        SettingsCache.set_file(ifc)
        return pao


 def viewport_shading_changed_callback(area: bpy.types.Area) -> None:
    shading = area.spaces.active.shading.type
    if shading == "RENDERED":
-        tool.Style.get_style_props().active_style_type = "Internal"
+        tool.Style.get_style_props().active_style_type = "External"


 def subscribe_to_viewport_shading_changes():
@@ -347,9 +391,14 @@ def load_post(scene):

    # Bonsai overlays
    georeference_props = tool.Georeference.get_georeference_props()
-    aggregate_props = bpy.context.scene.BIMAggregateProperties
-    nest_props = bpy.context.scene.BIMNestProperties
+    aggregate_props = tool.Aggregate.get_aggregate_props()
+    nest_props = tool.Nest.get_nest_props()
    model_props = tool.Model.get_model_props()
+    GeoreferenceDecorator.uninstall()
+    AggregateDecorator.uninstall()
+    NestDecorator.uninstall()
+    WallAxisDecorator.uninstall()
+    SlabDirectionDecorator.uninstall()
    if georeference_props.should_visualise:
        GeoreferenceDecorator.install(bpy.context)
    if aggregate_props.aggregate_decorator:
@@ -360,9 +409,13 @@ def load_post(scene):
        WallAxisDecorator.install(bpy.context)
    if model_props.show_slab_direction:
        SlabDirectionDecorator.install(bpy.context)
+    if model_props.show_bounding_box:
+        BoundingBoxDecorator.install(bpy.context)

-    if scene := bpy.context.scene:
+    if preferences.should_use_snap and (scene := bpy.context.scene):
        # Snapping is off by default in Blender, but in BIM, it's more useful to be on
        scene.tool_settings.use_snap = True
        # Match default Bonsai snaps
        scene.tool_settings.snap_elements_base = {"EDGE", "EDGE_PERPENDICULAR", "VERTEX", "EDGE_MIDPOINT", "FACE"}
+
+    tool.Blender.sync_old_preferences()
@@ -27,7 +27,9 @@ import ifcopenshell.util.element
 import ifcopenshell.util.unit
 from ifcopenshell.util.doc import get_attribute_doc, get_predefined_type_doc, get_property_doc
 import bonsai.tool as tool
-from typing import Optional, Callable, Any, Union, Iterable, TYPE_CHECKING
+from types import EllipsisType
+from typing import Optional, Any, Union, TYPE_CHECKING
+from collections.abc import Callable, Iterable

 if TYPE_CHECKING:
    import bonsai.bim.prop
@@ -38,6 +40,9 @@ if TYPE_CHECKING:
    # - None  - property should be imported by default workflow
    # - True  - setting value for imported attribute should be skipped
    # - False - property should be skipped entirely from import
+    # Second argument is optional,
+    # because ImportCallback might be called for attributes that are not created by default
+    # (e.g. IFC entity attributes).
    ImportCallback = Callable[[str, Optional[bonsai.bim.prop.Attribute], dict[str, Any]], Union[bool, None]]
    # ExportCallback return values:
    # - True  - property should be skipped entirely from export
@@ -51,33 +56,64 @@ def draw_attributes(
    copy_operator: Optional[str] = None,
    popup_active_attribute: Optional[bonsai.bim.prop.Attribute] = None,
    callback: Optional[Callable[[bonsai.bim.prop.Attribute, bpy.types.UILayout], None]] = None,
+    *,
+    enable_search: Union[bool, EllipsisType] = ...,
 ) -> None:
    """Draw editable UI for prop.Attributes.

    You can set attribute active in popup with `active_attribute`
    meaning you will be able to type into attribute's field without having to click
    on it first
+
+    :param enable_search: Add search button to string, integer, and float attributes
+        Possible values:
+
+        - ``...`` (default value) -
+            add search if possible. If it's not possible, there will be no warnings or errors.
+        - ``True`` - always add search, if it's not possible it will result in errors.
+        - ``False`` - never add search.
+
    """
    for attribute in props:
        row = layout.row(align=True)
        if attribute == popup_active_attribute:
            row.activate_init = True
-        draw_attribute(attribute, row, copy_operator)
+        draw_attribute(attribute, row, copy_operator, enable_search=enable_search)
        if callback:
            callback(attribute, row)


 def draw_attribute(
-    attribute: bonsai.bim.prop.Attribute, layout: bpy.types.UILayout, copy_operator: Optional[str] = None
+    attribute: bonsai.bim.prop.Attribute,
+    layout: bpy.types.UILayout,
+    copy_operator: Optional[str] = None,
+    enable_search: Union[bool, EllipsisType] = ...,
 ) -> None:
    value_name = attribute.get_value_name(display_only=True)
+
    if value_name == "enum_value":
        prop_with_search(layout, attribute, "enum_value", text=attribute.name)
    elif value_name == "filepath_value":
        attribute.filepath_value.layout_file_select(layout, filter_glob=attribute.filter_glob, text=attribute.name)
+
+    elif value_name == "subitems_values":
+        col = layout.column()
+        layout = col.row(align=True)
+        layout.label(text=f"{attribute.name}:")
+        data_path = tool.Blender.get_full_data_path(attribute, value_name)
+        for i, item in enumerate(attribute.subitems_values, 1):
+            row = col.row(align=True)
+            row.alignment = "EXPAND"
+            row.prop(item, "name", text=f"# {i}")
+            op = row.operator("bim.attribute_remove_subitem", text="", icon="X")
+            op.data_path = data_path
+            op.index = i - 1
+        op = layout.operator("bim.attribute_add_subitem", icon="ADD", text="")
+        op.data_path = data_path
+
    elif attribute.name in ("ScheduleDuration", "ActualDuration", "FreeFloat", "TotalFloat"):
-        propis = bpy.context.scene.BIMWorkScheduleProperties
-        for item in propis.durations_attributes:
+        props = tool.Sequence.get_work_schedule_props()
+        for item in props.durations_attributes:
            if item.name == attribute.name:
                duration_props = item
                layout.label(text=attribute.name)
@@ -95,17 +131,34 @@ def draw_attribute(
            text=attribute.display_name,
        )

-    if attribute.is_uri:
+    if attribute.special_type == "URI":
        op = layout.operator("bim.select_uri_attribute", text="", icon="FILE_FOLDER")
-        op.data_path = attribute.path_from_id("string_value")
+        op.attribute_data_path = tool.Blender.get_full_data_path(attribute)
    elif attribute.special_type in ("DATE", "DATETIME"):
        op = layout.operator("bim.datepicker", text="", icon="TIME")
        op.target_prop = attribute.path_from_id("string_value")
        op.include_time = attribute.special_type == "DATETIME"

+    if attribute.data_type in ("string", "integer", "float") and (
+        enable_search is True or (enable_search is ... and attribute.ifc_class)
+    ):
+        op = layout.operator("bim.attribute_search_values", text="", icon="VIEWZOOM")
+        op.attribute_name = attribute.name
+        op.attribute_ifc_class = attribute.ifc_class
+        op.data_path = tool.Blender.get_full_data_path(attribute, value_name)
+        op.data_type = attribute.data_type
+
    if attribute.is_optional:
        layout.prop(attribute, "is_null", icon="RADIOBUT_OFF" if attribute.is_null else "RADIOBUT_ON", text="")

+    if attribute.use_explorer_ui:
+        op = layout.operator("bim.explorer_show_ui_popup", text="", icon="ZOOM_SELECTED")
+        op.ifc_class = attribute.ifc_class
+        op.attribute_name = attribute.name
+        op.data_path = tool.Blender.get_full_data_path(attribute, value_name)
+        if ifc_id := attribute.get_value():
+            op.preselect_ifc_id = int(ifc_id)
+
    if attribute.name == "GlobalId":
        layout.operator("bim.generate_global_id", icon="FILE_REFRESH", text="")
    elif copy_operator:
@@ -114,28 +167,22 @@ def draw_attribute(


 def import_attributes(
-    ifc_class: str,
-    props: bpy.types.bpy_prop_collection_idprop[Attribute],
-    data: dict[str, Any],
-    callback: Optional[ImportCallback] = None,
-) -> None:
-    schema = tool.Ifc.schema()
-    for attribute in schema.declaration_by_name(ifc_class).all_attributes():
-        import_attribute(attribute, props, data, callback=callback)
-
-
-# A more elegant attribute importer signature, intended to supersede import_attributes
-def import_attributes2(
    element: Union[str, ifcopenshell.entity_instance],
    props: bpy.types.bpy_prop_collection_idprop[Attribute],
    callback: Optional[ImportCallback] = None,
 ) -> None:
+    """
+    :param element: Entity or IFC class string.
+    """
+    info: dict[str, Any]
    if isinstance(element, str):
-        attributes = tool.Ifc.schema().declaration_by_name(element).as_entity().all_attributes()
+        assert (entity := tool.Ifc.schema().declaration_by_name(element).as_entity())
+        attributes = entity.all_attributes()
        info = {a.name(): None for a in attributes}
        info["type"] = element
    else:
-        attributes = element.wrapped_data.declaration().as_entity().all_attributes()
+        assert (entity := element.wrapped_data.declaration().as_entity())
+        attributes = entity.all_attributes()
        info = element.get_info()
    for attribute in attributes:
        import_attribute(attribute, props, info, callback=callback)
@@ -149,15 +196,19 @@ def import_attribute(
 ) -> None:
    data_type = ifcopenshell.util.attribute.get_primitive_type(attribute)
    # Complex data types (aggregates and entities) are handled only by callback.
+    if data_type == ("list", "string"):
+        data_type = "list[string]"
    if isinstance(data_type, tuple) or data_type == "entity":
        callback(attribute.name(), None, data) if callback else None
        return
-    new: bonsai.bim.prop.Attribute = props.add()
+
+    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 ""
    new.ifc_class = data["type"]
+
    is_handled_by_callback = callback(attribute.name(), new, data) if callback else None
    data_type = new.data_type  # Allow callback to override data type.

@@ -167,8 +218,9 @@ def import_attribute(
        props.remove(len(props) - 1)
    elif data_type == "string":
        new.string_value = "" if new.is_null else str(data[attribute.name()]).replace("\n", "\\n")
-        if attribute.type_of_attribute().declared_type().name() == "IfcURIReference":
-            new.is_uri = True
+        attribute_type = attribute.type_of_attribute()
+        if attribute_type._is("IfcURIReference"):
+            new.special_type = "URI"
        elif attribute.type_of_attribute()._is("IfcDate"):
            new.special_type = "DATE"
        elif attribute.type_of_attribute()._is("IfcDateTime"):
@@ -202,6 +254,12 @@ def import_attribute(

        if enum_value is not None:
            new.enum_value = enum_value
+    elif data_type == "list[string]":
+        value: Union[list[str], None] = data[attribute.name()]
+        if value:
+            for item in value:
+                new.subitems_values.add().name = str(item).replace("\n", "\\n")
+
    add_attribute_description(new, data)
    add_attribute_min_max(attribute, new)

@@ -269,6 +327,16 @@ def export_attributes(
    return attributes


+def process_exported_entity_attribute(attributes: dict[str, Any], attribute_names: list[str]) -> None:
+    for attribute_name in attribute_names:
+        entity_id = attributes[attribute_name]
+        if entity_id is None:
+            # Maybe it was removed by now and enum is invalid.
+            del attributes[attribute_name]
+        else:
+            attributes[attribute_name] = tool.Ifc.get().by_id(int(entity_id))
+
+
 ENUM_ITEMS_DATA = Union[bpy.types.PropertyGroup, bpy.types.ID, bpy.types.Operator, bpy.types.OperatorProperties]


@@ -351,8 +419,23 @@ def get_enum_items(
    return items


-def draw_expandable_panel(layout, context, label: str, ui_func, default_closed: bool = True):
-    header, panel = layout.panel(label, default_closed=default_closed)
+def draw_expandable_panel(
+    layout: bpy.types.UILayout,
+    context: bpy.types.Context,
+    label: str,
+    ui_func: Callable[[bpy.types.UILayout, bpy.types.Context], None],
+    default_closed: bool = True,
+    *,
+    panel_id: str = "",
+) -> None:
+    """
+    :param panel_id: Optional unique identifier for the panel.
+        By default is matching ``label``, but if more than one panel with the same name is used,
+        then ``panel_id`` can be provided explicitly to ensure panels can be expanded/collapsed separately.
+    """
+    if not panel_id:
+        panel_id = label
+    header, panel = layout.panel(panel_id, default_closed=default_closed)
    header.label(text=label)
    if panel:
        ui_func(panel, context)
@@ -392,10 +475,16 @@ def draw_filter(
        row = layout.row(align=True)
        row.label(text=f"{len(data.data['saved_searches'])} Saved Searches")

+        row.operator("bim.select_entity_by_guid", text="", icon="CON_OBJECTSOLVER")
        if data.data["saved_searches"]:
            row.operator("bim.load_search", text="", icon="IMPORT").module = module
        row.operator("bim.save_search", text="", icon="EXPORT").module = module
-
+        if module != "search":
+            if module == "drawing_include":
+                row.operator("bim.edit_element_filter", icon="CHECKMARK", text="").filter_mode = "INCLUDE"
+            if module == "drawing_exclude":
+                row.operator("bim.edit_element_filter", icon="CHECKMARK", text="").filter_mode = "EXCLUDE"
+            row.operator("bim.enable_editing_element_filter", icon="CANCEL", text="").filter_mode = "NONE"
    row = layout.row(align=True)
    row.operator("bim.add_filter_group", text="Add Search Group", icon="ADD").module = module
    row.operator("bim.edit_filter_query", text="", icon="FILTER").module = module
@@ -31,9 +31,11 @@ import ifcopenshell.ifcopenshell_wrapper
 import bonsai
 import bonsai.bim.handler
 import bonsai.tool as tool
+from ifcopenshell.file import UndoSystemError
 from pathlib import Path
 from bonsai.tool.brick import BrickStore
-from typing import Set, Union, Optional, TypedDict, Callable, NotRequired
+from typing import Union, Optional, TypedDict, NotRequired, Literal
+from collections.abc import Callable


 IFC_CONNECTED_TYPE = Union[bpy.types.Material, bpy.types.Object]
@@ -68,7 +70,7 @@ class IfcStore:
    cache_path: Optional[str] = None
    id_map: dict[int, IFC_CONNECTED_TYPE] = {}
    guid_map: dict[str, IFC_CONNECTED_TYPE] = {}
-    edited_objs: Set[bpy.types.Object] = set()
+    edited_objs: set[bpy.types.Object] = set()
    pset_template_path: str = ""
    pset_template_file: Optional[ifcopenshell.file] = None
    classification_path: str = ""
@@ -103,7 +105,7 @@ class IfcStore:
        IfcStore.session_files = {}

    @staticmethod
-    def get_file():
+    def get_file() -> ifcopenshell.file | None:
        if IfcStore.file is None:
            props = tool.Blender.get_bim_props()
            IfcStore.set_path(props.ifc_file)
@@ -115,20 +117,20 @@ class IfcStore:
        return IfcStore.file

    @staticmethod
-    def set_path(value):
+    def set_path(value: str) -> None:
        IfcStore.path = value
        # Interpret relative paths as relative to .blend file.
        if IfcStore.path and not os.path.isabs(IfcStore.path):
            IfcStore.path = os.path.abspath(os.path.join(bpy.path.abspath("//"), IfcStore.path))

    @staticmethod
-    def get_cache():
+    def get_cache() -> ifcopenshell.geom.serializers.hdf5 | None:
        if IfcStore.cache is None and IfcStore.path:
-            props = tool.Blender.get_bim_props()
+            prefs = tool.Blender.get_addon_preferences()
            ifc_key = IfcStore.path + IfcStore.file.wrapped_data.header.file_name.time_stamp
            ifc_hash = hashlib.md5(ifc_key.encode("utf-8")).hexdigest()
-            os.makedirs(props.cache_dir, exist_ok=True)
-            IfcStore.cache_path = os.path.join(props.cache_dir, f"{ifc_hash}.h5")
+            os.makedirs(prefs.cache_dir, exist_ok=True)
+            IfcStore.cache_path = os.path.join(prefs.cache_dir, f"{ifc_hash}.h5")
            cache_path = Path(IfcStore.cache_path)
            cache_settings = ifcopenshell.geom.settings()
            serializer_settings = ifcopenshell.geom.serializer_settings()
@@ -161,15 +163,15 @@ class IfcStore:
        return IfcStore.cache

    @staticmethod
-    def update_cache():
+    def update_cache() -> None:
        if not IfcStore.cache:
            return
        assert IfcStore.cache_path
        assert IfcStore.file
        ifc_key = IfcStore.path + IfcStore.file.wrapped_data.header.file_name.time_stamp
        ifc_hash = hashlib.md5(ifc_key.encode("utf-8")).hexdigest()
-        props = tool.Blender.get_bim_props()
-        new_cache_path = os.path.join(props.cache_dir, f"{ifc_hash}.h5")
+        prefs = tool.Blender.get_addon_preferences()
+        new_cache_path = os.path.join(prefs.cache_dir, f"{ifc_hash}.h5")
        IfcStore.cache = None
        try:
            shutil.move(IfcStore.cache_path, new_cache_path)
@@ -181,11 +183,11 @@ class IfcStore:
        IfcStore.get_cache()

    @staticmethod
-    def load_file(path) -> None:
+    def load_file(path: str) -> None:
        if not os.path.isfile(path):
            return
        extension = path.split(".")[-1]
-        props = tool.Project.get_project_props()
+        prefs = tool.Blender.get_addon_preferences()
        if extension.lower() == "ifczip":
            with tempfile.TemporaryDirectory() as unzipped_path:
                with zipfile.ZipFile(path, "r") as zip_ref:
@@ -195,7 +197,7 @@ class IfcStore:
                    return
        elif extension.lower() == "ifcxml":
            IfcStore.file = ifcopenshell.file(ifcopenshell.ifcopenshell_wrapper.parse_ifcxml(path))
-        elif props.should_stream:
+        elif prefs.should_stream:
            IfcStore.file = ifcopenshell.open(path, should_stream=True)
        else:
            IfcStore.file = ifcopenshell.open(path)
@@ -417,6 +419,32 @@ class IfcStore:
            props = tool.Blender.get_object_bim_props(obj)
            props.ifc_definition_id = 0

+    @staticmethod
+    def get_ifc_file_undo_callback(callback_type: Literal["UNDO", "REDO"]):
+        def callback(_) -> None:
+            try:
+                if callback_type == "UNDO":
+                    tool.Ifc.get().undo()
+                else:
+                    tool.Ifc.get().redo()
+            except Exception as e:
+                # Persistent callbacks errors are not visible from UI and we set `last_error`
+                # to make it visible.
+                error_msg = ""
+                # In theory it should always be UndoSystemError, but just to be safe.
+                if isinstance(e, UndoSystemError):
+                    error_msg += "Undo transaction operations:\n"
+                    transaction = e.transaction
+                    for operation in transaction.operations:
+                        error_msg += f"- {str(operation)}\n"
+                    # Show it in system console too, not just in last message.
+                    print(error_msg)
+                error_msg += traceback.format_exc()
+                bonsai.last_error = error_msg
+                raise
+
+        return callback
+
    @staticmethod
    def execute_ifc_operator(
        operator: tool.Ifc.Operator,
@@ -446,7 +474,9 @@ class IfcStore:
                if tool.Ifc.get():
                    tool.Ifc.get().end_transaction()
                    IfcStore.add_transaction_operation(
-                        operator, rollback=lambda d: tool.Ifc.get().undo(), commit=lambda d: tool.Ifc.get().redo()
+                        operator,
+                        rollback=IfcStore.get_ifc_file_undo_callback("UNDO"),
+                        commit=IfcStore.get_ifc_file_undo_callback("REDO"),
                    )
                if BrickStore.graph is not None:  # `if BrickStore.graph` by itself takes ages.
                    BrickStore.end_transaction()
@@ -29,6 +29,7 @@ import numpy.typing as npt
 import multiprocessing
 import ifcopenshell
 import ifcopenshell.geom
+import ifcopenshell.ifcopenshell_wrapper as W
 import ifcopenshell.util.unit
 import ifcopenshell.util.element
 import ifcopenshell.util.geolocation
@@ -38,7 +39,8 @@ import ifcopenshell.util.shape
 import bonsai.tool as tool
 from bonsai.bim.ifc import IfcStore, IFC_CONNECTED_TYPE
 from bonsai.tool.loader import OBJECT_DATA_TYPE
-from typing import Dict, Union, Optional, Any, Literal
+from typing import Union, Optional, Any, Literal
+from collections.abc import Iterable
 from ifcopenshell.util.shape import MatrixType


@@ -47,7 +49,7 @@ class MaterialCreator:
    obj: bpy.types.Object

    def __init__(self, ifc_import_settings: IfcImportSettings, ifc_importer: IfcImporter):
-        self.styles: Dict[int, bpy.types.Material] = {}
+        self.styles: dict[int, bpy.types.Material] = {}
        self.parsed_meshes: set[str] = set()
        self.ifc_import_settings = ifc_import_settings
        self.ifc_importer = ifc_importer
@@ -198,11 +200,16 @@ class MaterialCreator:


 class IfcImporter:
+    file: ifcopenshell.file
+    """Either provided by user as an attribute or will be loaded from ``input_file`` during ``execute()``."""
+
+    elements: set[ifcopenshell.entity_instance]
+    """Set of IfcElements to import. Excluding ``gross_elements`` and ```native_elements``."""
+
    def __init__(self, ifc_import_settings: IfcImportSettings):
        self.ifc_import_settings = ifc_import_settings
        tool.Loader.set_settings(ifc_import_settings)
        self.diff = None
-        self.file: ifcopenshell.file = None
        self.project = None
        self.has_existing_project = False
        # element guids to blender collections mapping
@@ -224,7 +231,8 @@ class IfcImporter:
        self.progress = 0

        self.material_creator = MaterialCreator(ifc_import_settings, self)
-        classes_to_wireframe_str = tool.Drawing.get_document_props().classes_to_wireframe
+        prefs = tool.Blender.get_addon_preferences()
+        classes_to_wireframe_str = prefs.doc.classes_to_wireframe
        self.classes_to_wireframe_list = [word.strip() for word in classes_to_wireframe_str.split(",")]

    def profile_code(self, message: str) -> None:
@@ -295,26 +303,39 @@ class IfcImporter:
        tool.Spatial.run_spatial_import_spatial_decomposition()
        if default_container := tool.Spatial.guess_default_container():
            tool.Spatial.set_default_container(default_container)
-        tool.Loader.setup_active_bsdd_classification()
        self.update_progress(100)
        bpy.context.window_manager.progress_end()

    def process_context_filter(self) -> None:
+        """Setup contexts. Necessary for importing elements representations."""
+        contexts = self.file.by_type("IfcGeometricRepresentationContext")
+        if len(contexts) > 100:  # Probably something strange happening. Encountered from Revizto.
+            print("Warning! Excessive contexts were found and merged where applicable.")
+            uniques = {}
+            i = 0
+            for element in contexts:
+                data = "-".join([str(a) for a in element])
+                if unique := uniques.get(data, None):
+                    ifcopenshell.util.element.replace_element(element, unique)
+                    self.file.remove(element)
+                    i += 1
+                else:
+                    uniques[data] = element
+            print(f"Replaced {i} IfcGeometricRepresentationContext")
        tool.Loader.settings.contexts = ifcopenshell.util.representation.get_prioritised_contexts(self.file)
        tool.Loader.settings.context_settings = tool.Loader.create_settings()
        tool.Loader.settings.gross_context_settings = tool.Loader.create_settings(is_gross=True)

    def process_element_filter(self) -> None:
+        elements: list[ifcopenshell.entity_instance]
        if self.ifc_import_settings.has_filter:
-            self.elements = self.ifc_import_settings.elements
-            if isinstance(self.elements, set):
-                self.elements = list(self.elements)
+            elements = list(self.ifc_import_settings.elements)
            # TODO: enable filtering for annotations
        else:
            if self.file.schema in ("IFC2X3", "IFC4"):
-                self.elements = self.file.by_type("IfcElement") + self.file.by_type("IfcProxy")
+                elements = self.file.by_type("IfcElement") + self.file.by_type("IfcProxy")
            else:
-                self.elements = self.file.by_type("IfcElement")
+                elements = self.file.by_type("IfcElement")

        drawing_groups = [g for g in self.file.by_type("IfcGroup") if g.ObjectType == "DRAWING"]
        drawing_annotations = set()
@@ -324,16 +345,16 @@ class IfcImporter:
        self.annotations = set([a for a in self.file.by_type("IfcAnnotation")])
        self.annotations -= drawing_annotations

-        self.elements = [e for e in self.elements if not e.is_a("IfcFeatureElement") or e.is_a("IfcSurfaceFeature")]
+        elements = [e for e in elements if not e.is_a("IfcFeatureElement") or e.is_a("IfcSurfaceFeature")]
        if self.ifc_import_settings.element_limit_mode == "UNLIMITED":
-            self.elements = set(self.elements)
+            self.elements = set(elements)
        else:
            offset = self.ifc_import_settings.element_offset
            offset_limit = offset + self.ifc_import_settings.element_limit
-            self.elements = set(self.elements[offset:offset_limit])
+            self.elements = set(elements[offset:offset_limit])

        if self.ifc_import_settings.has_filter or self.ifc_import_settings.element_limit_mode != "UNLIMITED":
-            self.element_types = set([ifcopenshell.util.element.get_type(e) for e in self.elements])
+            self.element_types = {t for e in self.elements if (t := ifcopenshell.util.element.get_type(e))}
        else:
            self.element_types = set(self.file.by_type("IfcTypeProduct"))

@@ -371,6 +392,7 @@ class IfcImporter:
        return results

    def parse_native_elements(self) -> None:
+        # TODO: move to `process_element_filter` to incapsulate all `self.elements` logic.
        if not self.ifc_import_settings.should_load_geometry:
            return
        if not self.file.by_type("IfcSweptDiskSolid"):
@@ -408,7 +430,8 @@ class IfcImporter:

        rep = representation
        while True:
-            if len(rep.Items) == 1 and rep.Items[0].is_a("IfcMappedItem"):
+            # Tekla 2023 has missing items, though it's invalid IFC.
+            if rep.Items and len(rep.Items) == 1 and rep.Items[0].is_a("IfcMappedItem"):
                rep_matrix = ifcopenshell.util.placement.get_mappeditem_transformation(rep.Items[0])
                if not np.allclose(rep_matrix, np.eye(4)):
                    matrix = rep_matrix @ matrix
@@ -575,6 +598,7 @@ class IfcImporter:
            return self.create_generic_sqlite_elements(elements)

        if self.ifc_import_settings.should_load_geometry:
+            elements = elements.copy()  # Prevent argument mutation.
            context_settings = (
                tool.Loader.settings.gross_context_settings if is_gross else tool.Loader.settings.context_settings
            )
@@ -639,7 +663,7 @@ class IfcImporter:
        settings: Optional[ifcopenshell.geom.main.settings] = None,
    ) -> set[ifcopenshell.entity_instance]:
        checkpoint = time.time()
-        results = set()
+        results: set[ifcopenshell.entity_instance] = set()
        if not products:
            return results

@@ -703,9 +727,15 @@ class IfcImporter:
    def create_structural_point_connections(self):
        for product in self.file.by_type("IfcStructuralPointConnection"):
            # TODO: make this based off ifcopenshell. See #1409
-            representation: ifcopenshell.entity_instance = next(
-                rep for rep in product.Representation.Representations if rep.RepresentationType == "Vertex"
-            )
+
+            representation = tool.Structural.get_vertex_representation(product)
+            if not representation:
+                print(
+                    "WARNING. Skipping invalid IfcStructuralPointConnection - "
+                    f"element has no valid representation:\n{product}."
+                )
+                continue
+
            mesh = tool.Loader.create_structural_point_connection_mesh(representation)
            if mesh is None:
                continue
@@ -747,12 +777,9 @@ class IfcImporter:
    def create_pointclouds(self, products: set[ifcopenshell.entity_instance]) -> set[ifcopenshell.entity_instance]:
        result = set()
        for product in products:
-            representation = self.get_pointcloud_representation(product)
-            if representation is not None:
-                pointcloud = self.create_pointcloud(product, representation)
-                if pointcloud is not None:
+            if representation := self.get_pointcloud_representation(product):
+                if pointcloud := self.create_pointcloud(product, representation):
                    result.add(pointcloud)
-
        return result

    def create_pointcloud(
@@ -832,7 +859,7 @@ class IfcImporter:
        return obj

    def load_existing_meshes(self) -> None:
-        self.meshes.update({m.name: m for m in bpy.data.meshes})
+        self.meshes.update({m.name: m for m in bpy.data.meshes if m.library is None})

    def merge_materials_by_colour(self):
        cleaned_materials = {}
@@ -1007,9 +1034,9 @@ class IfcImporter:
    def create_curve(
        self,
        element: ifcopenshell.entity_instance,
-        shape: Union[ifcopenshell.geom.ShapeElementType, ifcopenshell.geom.ShapeType],
+        shape: Union[W.Triangulation, W.TriangulationElement],
    ) -> bpy.types.Curve:
-        if hasattr(shape, "geometry"):
+        if isinstance(shape, W.TriangulationElement):
            geometry = shape.geometry
        else:
            geometry = shape
@@ -1042,7 +1069,7 @@ class IfcImporter:
        cartesian_point_offset: Union[npt.NDArray[np.float64], Literal[False]] = None,
    ) -> Union[bpy.types.Mesh, None]:
        try:
-            if hasattr(shape, "geometry"):
+            if isinstance(shape, ifcopenshell.geom.ShapeElementType):
                # shape is ShapeElementType
                geometry = shape.geometry
            else:
@@ -1051,7 +1078,7 @@ class IfcImporter:
            # Mesh may already exists (e.g. during representation reimport)
            # and we assign some suffix to it to prevent Blender from adding '.001' suffix to the new mesh.
            mesh_name = tool.Loader.get_mesh_name_from_shape(geometry)
-            if old_mesh := bpy.data.meshes.get(mesh_name):
+            if old_mesh := bpy.data.meshes.get((mesh_name, None)):
                old_mesh.name = mesh_name + ".old"
            mesh = bpy.data.meshes.new(mesh_name)

@@ -1081,7 +1108,10 @@ class IfcImporter:
                verts=verts,
                load_indexed_maps=self.ifc_import_settings.load_indexed_maps,
            )
-            return tool.Loader.slice_layerset_mesh(element, mesh)
+            # E.g. `create_mesh` is also used for IfcRelSpaceBoundary.
+            if element.is_a("IfcObjectDefinition"):
+                return tool.Loader.slice_layerset_mesh(element, mesh)
+            return mesh
        except:
            self.ifc_import_settings.logger.error("Could not create mesh for %s", element)
            import traceback
@@ -1110,7 +1140,22 @@ class IfcImporter:
            bpy.ops.view3d.view_selected()
            bpy.ops.object.select_all(action="DESELECT")

-    def setup_arrays(self):
+    def setup_arrays(
+        self,
+        *,
+        annotations_to_import: Optional[set[ifcopenshell.entity_instance]] = None,
+        openings_to_import: Optional[set[ifcopenshell.entity_instance]] = None,
+    ) -> None:
+        # During base import some elements are skipped.
+        is_base_import = True
+        elements_to_import: set[ifcopenshell.entity_instance] = set()
+        if annotations_to_import is not None:
+            is_base_import = False
+            elements_to_import = annotations_to_import
+        elif openings_to_import is not None:
+            is_base_import = False
+            elements_to_import = openings_to_import
+
        for pset in self.file.by_type("IfcPropertySet"):
            if pset.Name != "BBIM_Array":
                continue
@@ -1118,16 +1163,24 @@ class IfcImporter:
                continue
            data = json.loads(data)
            for rel in pset.DefinesOccurrence:
+                element: ifcopenshell.entity_instance
                for element in rel.RelatedObjects:
+                    if is_base_import:
+                        if element.is_a("IfcAnnotation") or element.is_a("IfcOpeningElement"):
+                            continue
+                    else:
+                        if element not in elements_to_import:
+                            continue
                    for i in range(len(data)):
                        tool.Blender.Modifier.Array.set_children_lock_state(element, i, True)
                        tool.Blender.Modifier.Array.constrain_children_to_parent(element)


 class IfcImportSettings:
+    input_file: Union[str, None] = None
+    logger: Union[logging.Logger, None] = None
+
    def __init__(self):
-        self.logger: logging.Logger = None
-        self.input_file = None
        self.diff_file = None
        self.geometry_library = "opencascade"
        self.should_use_cpu_multiprocessing = True
@@ -1148,18 +1201,20 @@ class IfcImportSettings:
        self.element_limit_mode = "UNLIMITED"
        self.element_offset = 0
        self.element_limit = 30000
-        self.has_filter = None
+        self.has_filter = False
        self.should_filter_spatial_elements = True
        self.should_setup_viewport_camera = True
        self.contexts: list[ifcopenshell.entity_instance] = []
        self.context_settings: list[ifcopenshell.geom.main.settings] = []
        self.gross_context_settings: list[ifcopenshell.geom.main.settings] = []
-        self.elements: set[ifcopenshell.entity_instance] = set()
+        self.elements: Iterable[ifcopenshell.entity_instance] = set()
        self.load_indexed_maps = False

    @staticmethod
-    def factory(context=None, input_file=None, logger=None):
-        scene_diff = bpy.context.scene.DiffProperties
+    def factory(
+        context=None, input_file: Optional[str] = None, logger: Optional[logging.Logger] = None
+    ) -> IfcImportSettings:
+        scene_diff = tool.Blender.get_diff_props()
        props = tool.Project.get_project_props()
        settings = IfcImportSettings()
        settings.input_file = input_file
@@ -20,6 +20,7 @@ import blf
 import bpy
 import gpu
 import ifcopenshell
+import ifcopenshell.util.element
 import bonsai.tool as tool
 from bpy.types import SpaceView3D
 from bpy_extras import view3d_utils
@@ -131,6 +132,9 @@ class AggregateDecorator:
        return shader

    def draw_custom_batch(self, coords, color):
+        indices = None
+        if not tool.Blender.validate_shader_batch_data(coords, indices):
+            return
        shader = self.dotted_line_shader()

        arc_lengths = [0]
@@ -141,6 +145,7 @@ class AggregateDecorator:
            shader,
            "LINE_STRIP",
            {"position": coords, "arcLength": arc_lengths},
+            indices=indices,
        )

        matrix = bpy.context.region_data.perspective_matrix
@@ -150,14 +155,15 @@ class AggregateDecorator:
        batch.draw(shader)

    def draw_batch(self, shader_type, content_pos, color, indices=None):
+        if not tool.Blender.validate_shader_batch_data(content_pos, indices):
+            return
        shader = self.line_shader if shader_type == "LINES" else self.shader
        batch = batch_for_shader(shader, shader_type, {"pos": content_pos}, indices=indices)
        shader.uniform_float("color", color)
        batch.draw(shader)

    def draw_aggregate(self, context):
-        if context.scene.BIMAggregateProperties.in_aggregate_mode:
-            return
+        props = tool.Aggregate.get_aggregate_props()
        self.addon_prefs = tool.Blender.get_addon_preferences()
        decorator_color_special = self.addon_prefs.decorator_color_special
        decorator_color_selected = self.addon_prefs.decorator_color_selected
@@ -186,7 +192,13 @@ class AggregateDecorator:
                aggregates.append(obj)
                continue

-            aggregate = ifcopenshell.util.element.get_aggregate(element)
+            aggregates_list = tool.Aggregate.get_aggregates_recursively(element)
+            if props.in_aggregate_mode and props.editing_aggregate:
+                index = aggregates_list.index(tool.Ifc.get_entity(props.editing_aggregate))
+                if index > 0:
+                    aggregate = aggregates_list[index - 1]
+            else:
+                aggregate = aggregates_list[-1]
            if aggregate:
                aggregates.append(tool.Ifc.get_object(aggregate))

@@ -204,9 +216,7 @@ class AggregateDecorator:
            self.draw_batch("LINES", line_y, color, [(0, 1)])
            line_z = (location - Vector((0.0, 0.0, size)), location + Vector((0.0, 0.0, size)))
            self.draw_batch("LINES", line_z, color, [(0, 1)])
-            if context.scene.BIMAggregateProperties.in_aggregate_mode:
-                return
-            parts = ifcopenshell.util.element.get_parts(tool.Ifc.get_entity(aggregate))
+            parts = tool.Aggregate.get_parts_recursively(tool.Ifc.get_entity(aggregate))
            parts_objs = [tool.Ifc.get_object(p) for p in parts]

            indices, edges = create_bounding_box(parts_objs)
@@ -243,6 +253,8 @@ class AggregateModeDecorator:
        cls.is_installed = False

    def draw_batch(self, shader_type, content_pos, color, indices=None):
+        if not tool.Blender.validate_shader_batch_data(content_pos, indices):
+            return
        shader = self.line_shader if shader_type == "LINES" else self.shader
        batch = batch_for_shader(shader, shader_type, {"pos": content_pos}, indices=indices)
        shader.uniform_float("color", color)
@@ -253,7 +265,7 @@ class AggregateModeDecorator:
            return
        region = context.region
        rv3d = region.data
-        props = context.scene.BIMAggregateProperties
+        props = tool.Aggregate.get_aggregate_props()

        aggregate_obj = props.editing_aggregate
        if not aggregate_obj:
@@ -284,7 +296,7 @@ class AggregateModeDecorator:
    def draw_aggregate_empty(self, context):
        if context.mode == "EDIT_MESH":
            return
-        props = context.scene.BIMAggregateProperties
+        props = tool.Aggregate.get_aggregate_props()
        aggregate_obj = props.editing_aggregate
        if not aggregate_obj:
            return
@@ -323,7 +335,7 @@ class AggregateModeDecorator:
                    self.draw_batch("LINES", line_y, color, [(0, 1)])
                    line_z = (location - Vector((0.0, 0.0, size)), location + Vector((0.0, 0.0, size)))
                    self.draw_batch("LINES", line_z, color, [(0, 1)])
-                    parts = ifcopenshell.util.element.get_parts(tool.Ifc.get_entity(aggregate_obj))
+                    parts = tool.Aggregate.get_parts_recursively(tool.Ifc.get_entity(aggregate_obj))

        color = self.addon_prefs.decorator_color_selected
        parts_objs = [tool.Ifc.get_object(p) for p in parts]
@@ -19,10 +19,13 @@
 import bpy
 import ifcopenshell
 import ifcopenshell.api
+import ifcopenshell.api.group
+import ifcopenshell.api.pset
 import ifcopenshell.util.element
 import bonsai.tool as tool
 import bonsai.core.aggregate as core
 import bonsai.core.spatial
+from typing import TYPE_CHECKING


 class BIM_OT_aggregate_assign_object(bpy.types.Operator, tool.Ifc.Operator):
@@ -30,23 +33,30 @@ class BIM_OT_aggregate_assign_object(bpy.types.Operator, tool.Ifc.Operator):
    bl_label = "Assign Object To Aggregation"
    bl_description = (
        "Assign object as an aggregate to the selected IFC elements.\n\n"
-        "If called from Bonsai UI, then either 'Relating Whole' or 'Related Part' must be provided.\n"
+        "If called from Object Aggregates UI, then either 'Relating Whole' or 'Related Part' must be provided.\n"
        "If called directly, active object will be considered a relating whole"
    )
    bl_options = {"REGISTER", "UNDO"}
    relating_object: bpy.props.IntProperty()
    related_object: bpy.props.IntProperty()

+    if TYPE_CHECKING:
+        relating_object: int
+        related_object: int
+
    def _execute(self, context):
        relating_obj = None
        if self.relating_object:
            relating_obj = tool.Ifc.get_object(tool.Ifc.get().by_id(self.relating_object))
+            assert relating_obj
        elif self.related_object:
            aggregate = ifcopenshell.util.element.get_aggregate(tool.Ifc.get().by_id(self.related_object))
            if aggregate:
                relating_obj = tool.Ifc.get_object(aggregate)
-        elif context.active_object:
+                assert relating_obj
+        else:
            relating_obj = context.active_object
+
        if not relating_obj:
            self.report({"ERROR"}, "No relating object is provided.")
            return
@@ -66,7 +76,7 @@ class BIM_OT_aggregate_assign_object(bpy.types.Operator, tool.Ifc.Operator):
                    relating_obj=relating_obj,
                    related_obj=obj,
                )
-                props = context.scene.BIMAggregateProperties
+                props = tool.Aggregate.get_aggregate_props()
                if relating_obj == props.editing_aggregate and props.in_aggregate_mode:
                    new_editing_obj = props.editing_objects.add()
                    new_editing_obj.obj = obj
@@ -104,7 +114,7 @@ class BIM_OT_aggregate_unassign_object(bpy.types.Operator, tool.Ifc.Operator):
                pset = ifcopenshell.util.element.get_pset(element, "BBIM_Linked_Aggregate")
                if pset:
                    pset = tool.Ifc.get().by_id(pset["id"])
-                    ifcopenshell.api.run("pset.remove_pset", tool.Ifc.get(), product=element, pset=pset)
+                    ifcopenshell.api.pset.remove_pset(tool.Ifc.get(), product=element, pset=pset)


 class BIM_OT_enable_editing_aggregate(bpy.types.Operator):
@@ -132,12 +142,11 @@ class BIM_OT_disable_editing_aggregate(bpy.types.Operator):


 class BIM_OT_add_aggregate(bpy.types.Operator, tool.Ifc.Operator):
-    """Add aggregate to IFC element"""
+    """Add aggregate to selected IFC elements."""

    bl_idname = "bim.add_aggregate"
    bl_label = "Add Aggregate"
    bl_options = {"REGISTER", "UNDO"}
-    obj: bpy.props.StringProperty()
    ifc_class: bpy.props.StringProperty(name="IFC Class", default="IfcElementAssembly")
    aggregate_name: bpy.props.StringProperty(name="Name", default="Default_Name")

@@ -157,7 +166,7 @@ class BIM_OT_add_aggregate(bpy.types.Operator, tool.Ifc.Operator):
            return
        aggregate = self.create_aggregate(context, ifc_class, self.aggregate_name)

-        for obj in context.selected_objects:
+        for obj in tool.Blender.get_selected_objects():
            element = tool.Ifc.get_entity(obj)
            if not element:
                continue
@@ -182,7 +191,7 @@ class BIM_OT_add_aggregate(bpy.types.Operator, tool.Ifc.Operator):
                )
            core.assign_object(tool.Ifc, tool.Aggregate, tool.Collector, relating_obj=aggregate, related_obj=obj)

-    def create_aggregate(self, context, ifc_class, aggregate_name):
+    def create_aggregate(self, context: bpy.types.Context, ifc_class: str, aggregate_name: str) -> bpy.types.Object:
        aggregate = bpy.data.objects.new(aggregate_name, None)
        aggregate.location = context.scene.cursor.location
        bpy.ops.bim.assign_class(obj=aggregate.name, ifc_class=ifc_class)
@@ -216,16 +225,25 @@ class BIM_OT_select_aggregate(bpy.types.Operator):
    bl_idname = "bim.select_aggregate"
    bl_label = "Select Aggregate"
    bl_options = {"REGISTER", "UNDO"}
+
    obj: bpy.props.StringProperty()
    select_parts: bpy.props.BoolProperty(default=False)
+    one_level_deep: bpy.props.BoolProperty(
+        name="One Level Deep", description="Select only immediate children, not recursively", default=False
+    )

    @classmethod
    def description(cls, context, properties):
        if properties.select_parts:
-            return "Select Aggregate and Parts"
+            return "Select Aggregate and Parts.\n\nCtrl+click to select only one level deep"
        else:
            return "Select Aggregate"

+    def invoke(self, context, event):
+        if event.type == "LEFTMOUSE" and event.ctrl:
+            self.one_level_deep = True
+        return self.execute(context)
+
    def execute(self, context):
        all_parts = []
        for obj in context.selected_objects:
@@ -241,14 +259,27 @@ class BIM_OT_select_aggregate(bpy.types.Operator):
                obj.select_set(False)

        if self.select_parts:
-            all_objs = []
+            selected_parts = []
+
            for part in all_parts:
                if part.IsDecomposedBy:
-                    for subpart in part.IsDecomposedBy[0].RelatedObjects:
-                        all_parts.append(subpart)
-                all_objs.append(part)
+                    for rel in part.IsDecomposedBy:
+                        for subpart in rel.RelatedObjects:
+                            selected_parts.append(subpart)

-            for element in all_objs:
+                            # If not limited to one level, traverse deeper
+                            if not self.one_level_deep:
+
+                                def add_descendants(elem):
+                                    if elem.IsDecomposedBy:
+                                        for rel in elem.IsDecomposedBy:
+                                            for deeper in rel.RelatedObjects:
+                                                selected_parts.append(deeper)
+                                                add_descendants(deeper)
+
+                                add_descendants(subpart)
+
+            for element in set(selected_parts + all_parts):
                obj = tool.Ifc.get_object(element)
                if obj:
                    obj.select_set(True)
@@ -256,9 +287,11 @@ class BIM_OT_select_aggregate(bpy.types.Operator):
        else:
            for aggregate_element in all_parts:
                aggregate_obj = tool.Ifc.get_object(aggregate_element)
-                aggregate_obj.select_set(True)
-                bpy.context.view_layer.objects.active = aggregate_obj
+                if aggregate_obj:
+                    aggregate_obj.select_set(True)
+                    bpy.context.view_layer.objects.active = aggregate_obj

+        self.one_level_deep = False  # <-- forcibly reset
        return {"FINISHED"}


@@ -293,6 +326,7 @@ class BIM_OT_break_link_to_other_aggregates(bpy.types.Operator, tool.Ifc.Operato
    bl_options = {"REGISTER", "UNDO"}

    def _execute(self, context):
+        ifc_file = tool.Ifc.get()
        element = tool.Ifc.get_entity(bpy.context.active_object)
        aggregate = ifcopenshell.util.element.get_aggregate(element)
        if not aggregate:
@@ -304,8 +338,8 @@ class BIM_OT_break_link_to_other_aggregates(bpy.types.Operator, tool.Ifc.Operato

        for part in parts:
            pset = ifcopenshell.util.element.get_pset(part, "BBIM_Linked_Aggregate")
-            pset = tool.Ifc.get().by_id(pset["id"])
-            ifcopenshell.api.run("pset.remove_pset", tool.Ifc.get(), product=part, pset=pset)
+            pset = ifc_file.by_id(pset["id"])
+            ifcopenshell.api.pset.remove_pset(ifc_file, product=part, pset=pset)

        linked_aggregate_group = next(
            r.RelatingGroup
@@ -313,7 +347,7 @@ class BIM_OT_break_link_to_other_aggregates(bpy.types.Operator, tool.Ifc.Operato
            if r.is_a("IfcRelAssignsToGroup")
            if "BBIM_Linked_Aggregate" in r.RelatingGroup.Name
        )
-        tool.Ifc.run("group.unassign_group", group=linked_aggregate_group, products=[aggregate])
+        ifcopenshell.api.group.unassign_group(ifc_file, group=linked_aggregate_group, products=[aggregate])

        return {"FINISHED"}

@@ -378,7 +412,7 @@ class BIM_OT_disable_aggregate_mode(bpy.types.Operator):

    def execute(self, context):
        bpy.ops.object.select_all(action="DESELECT")
-        bonsai.core.aggregate.disable_aggregate_mode(tool.Aggregate)
+        core.exit_aggregate_mode(tool.Aggregate)
        return {"FINISHED"}


@@ -388,7 +422,7 @@ class BIM_OT_toggle_aggregate_mode_local_view(bpy.types.Operator):
    bl_options = {"REGISTER", "UNDO"}

    def execute(self, context):
-        props = context.scene.BIMAggregateProperties
+        props = tool.Aggregate.get_aggregate_props()
        objs = [o.obj for o in props.editing_objects]
        if props.in_aggregate_mode:
            if context.space_data.local_view:
@@ -33,6 +33,7 @@ from bpy.props import (
    CollectionProperty,
 )
 from bonsai.bim.module.aggregate.decorator import AggregateDecorator, AggregateModeDecorator
+from typing import TYPE_CHECKING, Union


 def can_aggregate(relating_obj: bpy.types.Object, related_obj: bpy.types.Object) -> bool:
@@ -98,15 +99,27 @@ class BIMObjectAggregateProperties(PropertyGroup):
        poll=poll_related_object,
    )

+    if TYPE_CHECKING:
+        is_editing: bool
+        relating_object: Union[bpy.types.Object, None]
+        related_object: Union[bpy.types.Object, None]
+

 class Objects(bpy.types.PropertyGroup):
    obj: PointerProperty(type=bpy.types.Object)
    previous_display_type: bpy.props.StringProperty(default="TEXTURED")
+    previous_hide_select: bpy.props.BoolProperty(default=False)
+
+    if TYPE_CHECKING:
+        obj: Union[bpy.types.Object, None]
+        previous_display_type: str
+        previous_hide_select: bool


 class BIMAggregateProperties(PropertyGroup):
    in_aggregate_mode: BoolProperty(name="In Edit Mode", update=update_aggregate_mode_decorator)
    editing_aggregate: PointerProperty(name="Editing Aggregate", type=bpy.types.Object)
+    previous_editing_aggregate: PointerProperty(name="Editing Aggregate", type=bpy.types.Object)
    editing_objects: CollectionProperty(type=Objects)
    not_editing_objects: CollectionProperty(type=Objects)
    aggregate_decorator: BoolProperty(
@@ -114,3 +127,16 @@ class BIMAggregateProperties(PropertyGroup):
        default=False,
        update=update_aggregate_decorator,
    )
+    previous_state: BoolProperty(
+        name="True if it was previously in aggregate mode",
+        default=False,
+    )
+
+    if TYPE_CHECKING:
+        in_aggregate_mode: bool
+        editing_aggregate: Union[bpy.types.Object, None]
+        previous_editing_aggregate: Union[bpy.types.Object, None]
+        editing_objects: bpy.types.bpy_prop_collection_idprop[Objects]
+        not_editing_objects: bpy.types.bpy_prop_collection_idprop[Objects]
+        aggregate_decorator: bool
+        previous_state: bool
@@ -49,11 +49,14 @@ class BIM_PT_aggregate(Panel):
        layout = self.layout
        row = layout.row()
        row.label(text="Aggregate Decorator")
-        row.prop(context.scene.BIMAggregateProperties, "aggregate_decorator", icon="HIDE_OFF", text="")
+        props = tool.Aggregate.get_aggregate_props()
+        icon = "HIDE_OFF" if props.aggregate_decorator else "HIDE_ON"
+        row.prop(props, "aggregate_decorator", icon=icon, text="")
        if not AggregateData.is_loaded:
            AggregateData.load()

-        props = context.active_object.BIMObjectAggregateProperties
+        assert (obj := context.active_object)
+        props = tool.Aggregate.get_object_aggregate_props(obj)

        if props.is_editing:
            row = layout.row()
@@ -76,10 +79,8 @@ class BIM_PT_aggregate(Panel):
            if AggregateData.data["has_relating_object"]:
                row.label(text=AggregateData.data["relating_object_label"], icon="TRIA_UP")
                op = row.operator("bim.select_aggregate", icon="OBJECT_DATA", text="")
-                op.obj = context.active_object.name
                op.select_parts = False
                op = row.operator("bim.select_aggregate", icon="RESTRICT_SELECT_OFF", text="")
-                op.obj = context.active_object.name
                op.select_parts = True
                row.operator("bim.enable_editing_aggregate", icon="GREASEPENCIL", text="")
                row.operator("bim.add_aggregate", icon="ADD", text="")
@@ -131,9 +132,8 @@ class BIM_PT_linked_aggregate(Panel):
        if not AggregateData.is_loaded:
            AggregateData.load()

-        obj = context.active_object
-        element = tool.Ifc.get_entity(obj)
-        props = obj.BIMObjectAggregateProperties
+        assert (obj := context.active_object)
+        assert (element := tool.Ifc.get_entity(obj))
        row = layout.row(align=True)

        if element.Decomposes:
@@ -0,0 +1,36 @@
+# Bonsai - OpenBIM Blender Add-on
+# Copyright (C) 2020, 2021 Dion Moult <dion@thinkmoult.com>
+#
+# This file is part of Bonsai.
+#
+# Bonsai is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# Bonsai is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with Bonsai.  If not, see <http://www.gnu.org/licenses/>.
+
+import bpy
+
+# from . import ui, prop, operator
+from . import operator
+
+classes = (operator.ImportAlignmentCSV,)
+
+
+def menu_func_import(self, context):
+    self.layout.operator(operator.ImportAlignmentCSV.bl_idname, text="Alignment (.csv)")
+
+
+def register():
+    bpy.types.TOPBAR_MT_file_import.append(menu_func_import)
+
+
+def unregister():
+    bpy.types.TOPBAR_MT_file_import.remove(menu_func_import)
@@ -0,0 +1,109 @@
+# Bonsai - OpenBIM Blender Add-on
+# Copyright (C) 2020, 2021 Dion Moult <dion@thinkmoult.com>, 2022 Yassine Oualid <yassine@sigmadimensions.com>
+#
+# This file is part of Bonsai.
+#
+# Bonsai is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# Bonsai is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with Bonsai.  If not, see <http://www.gnu.org/licenses/>.
+
+# pyright: reportUnnecessaryTypeIgnoreComment=error
+
+import os
+
+import ifcopenshell.api.alignment
+
+import bpy
+import json
+import time
+import calendar
+import isodate
+import bonsai.core.sequence as core
+import bonsai.tool as tool
+import bonsai.bim.module.sequence.helper as helper
+import ifcopenshell.api.spatial
+import ifcopenshell.geom
+import ifcopenshell.util.sequence
+import ifcopenshell.util.selector
+from datetime import datetime
+from dateutil import parser, relativedelta
+from bpy_extras.io_utils import ImportHelper
+
+
+class ImportAlignmentCSV(bpy.types.Operator, tool.Ifc.Operator, ImportHelper):
+    bl_idname = "bim.import_alignment_csv"
+    bl_label = "Import Alignment CSV"
+    bl_description = " Import alignment from the provided .csv file."
+    bl_options = {"REGISTER", "UNDO"}
+    filename_ext = ".csv"
+    filter_glob: bpy.props.StringProperty(default="*.csv", options={"HIDDEN"})
+
+    @classmethod
+    def poll(cls, context):
+        ifc_file = tool.Ifc.get()
+        if ifc_file is None:
+            cls.poll_message_set("No IFC file is loaded.")
+            return False
+        elif ifc_file.schema != "IFC4X3":
+            cls.poll_message_set("Schema must be IFC4x3.")
+            return False
+        return True
+
+    def _execute(self, context):
+        self.file = tool.Ifc.get()
+        start = time.time()
+        alignment = ifcopenshell.api.alignment.create_from_csv(self.file, self.filepath)
+
+        # IFC 4.1.5.1 alignments cannot be contained in spatial structures, but can be referenced into them
+        sites = self.file.by_type("IfcSite")
+        for site in sites:
+            ifcopenshell.api.spatial.reference_structure(self.file, products=[alignment], relating_structure=site)
+
+        # process the generated IfcReferent for the alignment
+        for rel in alignment.IsNestedBy:
+            for referent in rel.RelatedObjects:
+                if referent.is_a("IfcReferent"):
+                    referent_obj = bpy.data.objects.new(tool.Loader.get_name(referent), None)
+                    tool.Geometry.link(referent, referent_obj)
+                    tool.Collector.assign(referent_obj, should_clean_users_collection=False)
+
+        # an alignment can be an aggregation of multiple child alignments (ie. multiple verticals for a single horizontal)
+        # get all the alignment curves
+        curves = []
+        for rel in alignment.IsDecomposedBy:
+            for agg in rel.RelatedObjects:
+                if agg.is_a("IfcAlignment"):
+                    curves.append(ifcopenshell.api.alignment.get_curve(agg))  # 3D curve
+
+        # if there aren't any curves from aggregation, then there is only a single vertical or no vertical
+        if len(curves) == 0:
+            curves.append(ifcopenshell.api.alignment.get_curve(alignment))
+
+        settings = ifcopenshell.geom.settings()
+        for curve in curves:
+            shape = ifcopenshell.geom.create_shape(settings, curve)
+
+            # create a new Blender mesh
+            mesh_name = tool.Loader.get_mesh_name_from_shape(shape)
+            mesh = bpy.data.meshes.new(mesh_name)
+            m = tool.Loader.convert_geometry_to_mesh(shape, mesh)
+
+            # create a new Blender object
+            alignment_obj = bpy.data.objects.new(tool.Loader.get_name(alignment), m)
+
+            # link the blender object to with the alignment element
+            tool.Geometry.link(alignment, alignment_obj)
+
+            # assign the object to the blender collections
+            tool.Collector.assign(alignment_obj, should_clean_users_collection=False)
+
+        self.report({"INFO"}, "Imported in %s seconds" % (time.time() - start))
@@ -25,13 +25,23 @@ classes = (
    operator.EditAttributes,
    operator.GenerateGlobalId,
    operator.CopyAttributeToSelection,
+    operator.ExplorerAddEntity,
+    operator.ExplorerEnableEditingEntity,
+    operator.ExplorerDisableEditingEntity,
+    operator.ExplorerEditEntity,
+    operator.ExplorerShowUIPopup,
    prop.BIMAttributeProperties,
+    prop.ExplorerEntity,
+    prop.BIMExplorerProperties,
    ui.BIM_PT_object_attributes,
+    ui.BIM_PT_explorer,
+    ui.BIM_UL_explorer,
 )


 def register():
    bpy.types.Object.BIMAttributeProperties = bpy.props.PointerProperty(type=prop.BIMAttributeProperties)
+    bpy.types.Scene.BIMExplorerProperties = bpy.props.PointerProperty(type=prop.BIMExplorerProperties)


 def unregister():
@@ -26,30 +26,46 @@ import bonsai.bim.helper
 import bonsai.tool as tool
 import bonsai.core.attribute as core
 import bonsai.core.spatial
+from typing import TYPE_CHECKING, Any, Union, Literal
+
+if TYPE_CHECKING:
+    from bonsai.bim.prop import Attribute
+    import bpy.stub_internal.rna_enums as rna_enums


-def get_objs_for_operation(operator_properties, context):
+def get_objs_for_operation(
+    operator_properties: "AttributesOperator", context: bpy.types.Context
+) -> list[bpy.types.Object]:
    if operator_properties.obj:
        return [bpy.data.objects[operator_properties.obj]]
    if operator_properties.mass_operation:
        return context.selected_objects[:]
-    return [context.active_object]
+    obj = context.active_object
+    assert obj
+    return [obj]


-class EnableEditingAttributes(bpy.types.Operator):
-    bl_idname = "bim.enable_editing_attributes"
-    bl_label = "Enable Editing Attributes"
-    bl_description = "ALT + Left Click to enable editing attributes on all selected objects"
-    bl_options = {"REGISTER", "UNDO"}
+class AttributesOperator:
    obj: bpy.props.StringProperty(options={"SKIP_SAVE"})
    mass_operation: bpy.props.BoolProperty(default=False, options={"SKIP_SAVE"})

+    if TYPE_CHECKING:
+        obj: str
+        mass_operation: bool
+
    def invoke(self, context, event):
        self.mass_operation = event.alt
        return self.execute(context)

-    def enable_editing_attribute_on_obj(self, obj):
-        props = obj.BIMAttributeProperties
+
+class EnableEditingAttributes(bpy.types.Operator, AttributesOperator):
+    bl_idname = "bim.enable_editing_attributes"
+    bl_label = "Enable Editing Attributes"
+    bl_description = "ALT + Left Click to enable editing attributes on all selected objects"
+    bl_options = {"REGISTER", "UNDO"}
+
+    def enable_editing_attribute_on_obj(self, obj: bpy.types.Object) -> None:
+        props = tool.Blender.get_object_attribute_props(obj)
        props.attributes.clear()

        element = tool.Ifc.get_entity(obj)
@@ -63,7 +79,9 @@ class EnableEditingAttributes(bpy.types.Operator):
                None,
            )

-        def callback(name, prop, data):
+        lookup_attrs = tool.Attribute.does_ifc_class_support_explorer_lookup(element.is_a())
+
+        def callback(name: str, prop: Union["Attribute", None], data: dict[str, Any]) -> None | Literal[True]:
            if name in ("RefLatitude", "RefLongitude"):
                new = props.attributes.add()
                new.name = name
@@ -77,8 +95,19 @@ class EnableEditingAttributes(bpy.types.Operator):
            if name in ("PredefinedType", "ObjectType") and has_inherited_predefined_type:
                props.attributes.remove(len(props.attributes) - 1)
                return True
+            if lookup_attrs and (name in lookup_attrs):
+                new = props.attributes.add()
+                new.name = name
+                new.ifc_class = data["type"]
+                new.data_type = "enum"
+                new.is_optional = True
+                new.enum_items_dynamic = lookup_attrs[name]
+                new.use_explorer_ui = True
+                value: Union[ifcopenshell.entity_instance, None] = data[name]
+                if value is not None:
+                    new.enum_value = str(value.id())

-        bonsai.bim.helper.import_attributes2(element, props.attributes, callback=callback)
+        bonsai.bim.helper.import_attributes(element, props.attributes, callback=callback)
        props.is_editing_attributes = True

    def execute(self, context):
@@ -87,21 +116,16 @@ class EnableEditingAttributes(bpy.types.Operator):
        return {"FINISHED"}


-class DisableEditingAttributes(bpy.types.Operator):
+class DisableEditingAttributes(bpy.types.Operator, AttributesOperator):
    bl_idname = "bim.disable_editing_attributes"
    bl_label = "Disable Editing Attributes"
    bl_description = "ALT + Left Click to disable editing attributes on all selected objects"
    bl_options = {"REGISTER", "UNDO"}
-    obj: bpy.props.StringProperty(options={"SKIP_SAVE"})
-    mass_operation: bpy.props.BoolProperty(default=False, options={"SKIP_SAVE"})

-    def invoke(self, context, event):
-        self.mass_operation = event.alt
-        return self.execute(context)
-
-    def disable_editing_attributes_on_obj(self, obj):
-        props = obj.BIMAttributeProperties
-        props.is_editing_attributes = False
+    def disable_editing_attributes_on_obj(self, obj: bpy.types.Object) -> None:
+        props = tool.Blender.get_object_attribute_props(obj)
+        props.attributes.clear()
+        props.property_unset("is_editing_attributes")

    def execute(self, context):
        for obj in get_objs_for_operation(self, context):
@@ -118,10 +142,10 @@ class EditAttributes(bpy.types.Operator, tool.Ifc.Operator):
    def _execute(self, context):
        self.file = tool.Ifc.get()
        obj = tool.Blender.get_active_object(is_selected=False)
-        if not (element := tool.Ifc.get_entity(obj)):
+        if not obj or not (element := tool.Ifc.get_entity(obj)):
            return

-        def callback(attributes, prop):
+        def callback(attributes: dict[str, Any], prop: "Attribute") -> None | Literal[True]:
            if prop.name in ("RefLatitude", "RefLongitude"):
                if not prop.is_null:
                    try:
@@ -130,8 +154,11 @@ class EditAttributes(bpy.types.Operator, tool.Ifc.Operator):
                        attributes[prop.name] = None
                    return True

-        props = obj.BIMAttributeProperties
+        props = tool.Blender.get_object_attribute_props(obj)
        attributes = bonsai.bim.helper.export_attributes(props.attributes, callback=callback)
+        lookup_attrs = tool.Attribute.does_ifc_class_support_explorer_lookup(element.is_a())
+        if lookup_attrs:
+            bonsai.bim.helper.process_exported_entity_attribute(attributes, list(lookup_attrs))
        ifcopenshell.api.attribute.edit_attributes(self.file, product=element, attributes=attributes)

        tool.Root.set_object_name(obj, element)
@@ -165,13 +192,12 @@ class GenerateGlobalId(bpy.types.Operator, tool.Ifc.Operator):
                element.GlobalId = ifcopenshell.guid.new()

        obj = context.active_object
-        if not obj or not obj.BIMAttributeProperties.is_editing_attributes:
+        if not obj or not (props := tool.Blender.get_object_attribute_props(obj)).is_editing_attributes:
            return {"FINISHED"}

-        props = obj.BIMAttributeProperties
        element = tool.Ifc.get_entity(obj)

-        if not element.is_a("IfcRoot"):
+        if not element or not element.is_a("IfcRoot"):
            return {"FINISHED"}

        if self.use_selected and obj in context.selected_objects:
@@ -191,8 +217,147 @@ class CopyAttributeToSelection(bpy.types.Operator, tool.Ifc.Operator):
    name: bpy.props.StringProperty()

    def _execute(self, context):
-        value = tool.Blender.get_active_object().BIMAttributeProperties.attributes.get(self.name).get_value()
+        obj = tool.Blender.get_active_object()
+        assert obj
+        props = tool.Blender.get_object_attribute_props(obj)
+        value = props.attributes[self.name].get_value()
        total = core.copy_attribute_to_selection(
            tool.Ifc, tool.Blender, tool.Root, tool.Spatial, name=self.name, value=value
        )
        self.report({"INFO"}, f"Attribute was successfully copied to {total} elements.")
+
+
+class ExplorerAddEntity(bpy.types.Operator, tool.Ifc.Operator):
+    bl_idname = "bim.explorer_add_entity"
+    bl_label = "Add Entity"
+    bl_options = {"REGISTER", "UNDO"}
+
+    def _execute(self, context) -> None:
+        props = tool.Attribute.get_explorer_props()
+        ifc_file = tool.Ifc.get()
+
+        entity = ifc_file.create_entity(props.ifc_class)
+        tool.Attribute.refresh_uilist_entities()
+        tool.Attribute.enable_editing_entity(entity)
+        tool.Attribute.import_entity_attributes(entity)
+
+
+class ExplorerEnableEditingEntity(bpy.types.Operator):
+    bl_idname = "bim.explorer_enable_editing_entity"
+    bl_label = "Enable Editing Entity"
+    bl_options = {"REGISTER", "UNDO"}
+
+    def execute(self, context) -> "set[rna_enums.OperatorReturnItems]":
+        props = tool.Attribute.get_explorer_props()
+        ifc_file = tool.Ifc.get()
+        assert (active_entity := props.active_entity)
+        entity = ifc_file.by_id(active_entity.ifc_definition_id)
+
+        tool.Attribute.disable_editing_entity()
+        tool.Attribute.enable_editing_entity(entity)
+        tool.Attribute.import_entity_attributes(entity)
+        return {"FINISHED"}
+
+
+class ExplorerDisableEditingEntity(bpy.types.Operator):
+    bl_idname = "bim.explorer_disable_editing_entity"
+    bl_label = "Disable Editing Entity"
+    bl_options = {"REGISTER", "UNDO"}
+
+    def execute(self, context) -> set["rna_enums.OperatorReturnItems"]:
+        tool.Attribute.disable_editing_entity()
+        return {"FINISHED"}
+
+
+class ExplorerEditEntity(bpy.types.Operator, tool.Ifc.Operator):
+    bl_idname = "bim.explorer_edit_entity"
+    bl_label = "Edit Entity"
+    bl_options = {"REGISTER", "UNDO"}
+
+    def _execute(self, context) -> None:
+        ifc_file = tool.Ifc.get()
+        props = tool.Attribute.get_explorer_props()
+        entity = ifc_file.by_id(props.editing_entity_id)
+
+        attrs = tool.Attribute.export_entity_attributes()
+        for attr, value in attrs.items():
+            setattr(entity, attr, value)
+        tool.Attribute.refresh_uilist_entities()
+        tool.Attribute.disable_editing_entity()
+
+
+class ExplorerShowUIPopup(bpy.types.Operator):
+    bl_idname = "bim.explorer_show_ui_popup"
+    bl_label = "Show Explorer UI"
+    bl_description = "Show Explorer UI to select element as attribute value or edit it."
+    bl_options = {"REGISTER", "UNDO"}
+
+    ifc_class: bpy.props.StringProperty()  # pyright: ignore[reportRedeclaration]
+    """Element IFC class."""
+    attribute_name: bpy.props.StringProperty()  # pyright: ignore[reportRedeclaration]
+    """IFC class attribute name."""
+    data_path: bpy.props.StringProperty()  # pyright: ignore[reportRedeclaration]
+    """Full data path"""
+    preselect_ifc_id: bpy.props.IntProperty(options={"SKIP_SAVE"})  # pyright: ignore[reportRedeclaration]
+    """IFC id to preselect in the popup."""
+
+    if TYPE_CHECKING:
+        ifc_class: str
+        attribute_name: str
+        data_path: str
+        preselect_ifc_id: int
+
+    def invoke(self, context, event) -> "set[rna_enums.OperatorReturnItems]":
+        assert context.window_manager
+        assert self.ifc_class and self.attribute_name and self.data_path
+
+        props = tool.Attribute.get_explorer_props()
+        props.is_loaded = True
+        props.ifc_class = self.get_attribute_type()
+
+        if self.preselect_ifc_id:
+            props.active_entity_index = next(
+                i for i, e in enumerate(props.entities) if e.ifc_definition_id == self.preselect_ifc_id
+            )
+
+        return context.window_manager.invoke_props_dialog(self, width=400)
+
+    def get_attribute_type(self) -> str:
+        schema = tool.Ifc.schema()
+        entity = schema.declaration_by_name(self.ifc_class).as_entity()
+        assert entity
+        i = entity.attribute_index(self.attribute_name)
+        attr = entity.all_attributes()[i]
+        named_type = attr.type_of_attribute().as_named_type()
+        assert named_type
+        declared = named_type.declared_type()
+        return declared.name()
+
+    def draw(self, context) -> None:
+        from bonsai.bim.module.attribute.ui import BIM_PT_explorer
+
+        BIM_PT_explorer.draw(self, context, is_popup=True)
+
+    def execute(self, context) -> "set[rna_enums.OperatorReturnItems]":
+        props = tool.Attribute.get_explorer_props()
+        active_entity = props.active_entity
+        if active_entity is None:
+            self.report({"WARNING"}, "No entity selected.")
+            return {"FINISHED"}
+
+        # Apply pending changes for convenience.
+        if props.editing_entity_id:
+            if props.editing_entity_id == active_entity.ifc_definition_id:
+                bpy.ops.bim.explorer_edit_entity()
+            else:
+                bpy.ops.bim.explorer_disable_editing_entity()
+
+        # Very important to do it after changes applied, otherwise enum might update
+        # and index will be pointing to a different element.
+        exec(f"{self.data_path} = '{active_entity.ifc_definition_id}'")
+        return {"FINISHED"}
+
+    def cancel(self, context: bpy.types.Context) -> None:
+        props = tool.Attribute.get_explorer_props()
+        if props.editing_entity_id:
+            bpy.ops.bim.explorer_disable_editing_entity()
@@ -17,6 +17,7 @@
 # along with Bonsai.  If not, see <http://www.gnu.org/licenses/>.

 import bpy
+import bonsai.tool as tool
 from bonsai.bim.prop import StrProperty, Attribute
 from bpy.types import PropertyGroup
 from bpy.props import (
@@ -29,8 +30,72 @@ from bpy.props import (
    FloatVectorProperty,
    CollectionProperty,
 )
+from typing import TYPE_CHECKING, Union


 class BIMAttributeProperties(PropertyGroup):
    attributes: CollectionProperty(name="Attributes", type=Attribute)
    is_editing_attributes: BoolProperty(name="Is Editing Attributes")
+
+    if TYPE_CHECKING:
+        attributes: bpy.types.bpy_prop_collection_idprop[Attribute]
+        is_editing_attributes: bool
+
+
+class ExplorerEntity(PropertyGroup):
+    ifc_definition_id: bpy.props.IntProperty()  # pyright: ignore[reportRedeclaration]
+
+    if TYPE_CHECKING:
+        ifc_definition_id: int
+
+
+class BIMExplorerProperties(PropertyGroup):
+    def update_is_loaded(self, context: object) -> None:
+        if self.is_loaded:
+            # Trigger refresh.
+            self.ifc_class = self.ifc_class
+        else:
+            self.property_unset("is_loaded")
+            self.property_unset("ifc_class")
+            self.entities.clear()
+            self.property_unset("active_entity_index")
+            self.property_unset("editing_entity_id")
+            self.entity_attributes.clear()
+
+    is_loaded: BoolProperty(  # pyright: ignore[reportRedeclaration]
+        name="Toggle Explorer UI",
+        update=update_is_loaded,
+    )
+
+    def get_ifc_class(self, context: object) -> tool.Blender.BLENDER_ENUM_ITEMS:
+        # TODO: Add more entities.
+        classes = [
+            "IfcPostalAddress",
+            "IfcTelecomAddress",
+        ]
+        return [(c, c, "") for c in classes]
+
+    def update_ifc_class(self, context: object) -> None:
+        tool.Attribute.refresh_uilist_entities()
+
+    ifc_class: EnumProperty(  # pyright: ignore[reportRedeclaration]
+        name="IFC Class To Search",
+        items=get_ifc_class,
+        update=update_ifc_class,
+    )
+    entities: CollectionProperty(type=ExplorerEntity)  # pyright: ignore[reportRedeclaration]
+    active_entity_index: IntProperty()  # pyright: ignore[reportRedeclaration]
+    editing_entity_id: IntProperty()  # pyright: ignore[reportRedeclaration]
+    entity_attributes: CollectionProperty(type=Attribute)  # pyright: ignore[reportRedeclaration]
+
+    if TYPE_CHECKING:
+        is_loaded: bool
+        ifc_class: str
+        entities: bpy.types.bpy_prop_collection_idprop[ExplorerEntity]
+        active_entity_index: int
+        editing_entity_id: int
+        entity_attributes: bpy.types.bpy_prop_collection_idprop[Attribute]
+
+    @property
+    def active_entity(self) -> Union[ExplorerEntity, None]:
+        return tool.Blender.get_active_uilist_element(self.entities, self.active_entity_index)
@@ -16,22 +16,31 @@
 # You should have received a copy of the GNU General Public License
 # along with Bonsai.  If not, see <http://www.gnu.org/licenses/>.

+from __future__ import annotations
 import bonsai.bim.helper
+import bpy.types
 from bpy.types import Panel
 from bonsai.bim.module.attribute.data import AttributesData
 import bonsai.tool as tool
+from typing import TYPE_CHECKING
+
+if TYPE_CHECKING:
+    from bonsai.bim.module.attribute.prop import BIMExplorerProperties, ExplorerEntity


-def draw_ui(context, layout, attributes):
+def draw_ui(context: bpy.types.Context, layout: bpy.types.UILayout, attributes) -> None:
    obj = context.active_object
-    props = obj.BIMAttributeProperties
+    assert obj
+    props = tool.Blender.get_object_attribute_props(obj)

    if props.is_editing_attributes:
        row = layout.row(align=True)
        row.operator("bim.edit_attributes", icon="CHECKMARK", text="Save Attributes")
        row.operator("bim.disable_editing_attributes", icon="CANCEL", text="")

-        bonsai.bim.helper.draw_attributes(props.attributes, layout, copy_operator="bim.copy_attribute_to_selection")
+        bonsai.bim.helper.draw_attributes(
+            props.attributes, layout, copy_operator="bim.copy_attribute_to_selection", enable_search=True
+        )
    else:
        row = layout.row()
        op = row.operator("bim.enable_editing_attributes", icon="GREASEPENCIL", text="Edit")
@@ -64,3 +73,73 @@ class BIM_PT_object_attributes(Panel):
        if not AttributesData.is_loaded:
            AttributesData.load()
        draw_ui(context, self.layout, AttributesData.data["attributes"])
+
+
+class BIM_PT_explorer(Panel):
+    bl_label = "Explorer"
+    bl_idname = "BIM_PT_explorer"
+    bl_options = {"DEFAULT_CLOSED"}
+    bl_space_type = "PROPERTIES"
+    bl_region_type = "WINDOW"
+    bl_context = "scene"
+    bl_parent_id = "BIM_PT_tab_project_setup"
+
+    def draw(self, context, *, is_popup=False):
+        assert (layout := self.layout)
+        props = tool.Attribute.get_explorer_props()
+
+        if is_popup:
+            layout.label(text=props.ifc_class)
+        else:
+            if not props.is_loaded:
+                row = layout.row(align=True)
+                row.label(text="Explorer UI is not Loaded.")
+                row.prop(props, "is_loaded", text="", icon="IMPORT")
+                return
+
+            row = layout.row(align=True)
+            row.prop(props, "ifc_class", text="")
+            row.prop(props, "is_loaded", text="", icon="CANCEL")
+
+        active_entity = props.active_entity
+        row = layout.row(align=True)
+        row.label(text=f"{len(props.entities)} entities found")
+        row.operator("bim.explorer_add_entity", text="", icon="ADD")
+
+        if active_entity:
+            if active_entity.ifc_definition_id == props.editing_entity_id:
+                row.operator("bim.explorer_disable_editing_entity", icon="CANCEL", text="")
+            else:
+                row.operator("bim.explorer_enable_editing_entity", icon="GREASEPENCIL", text="")
+            # TODO: 'Remove' button?
+
+        layout.template_list("BIM_UL_explorer", "", props, "entities", props, "active_entity_index")
+
+        if props.editing_entity_id:
+            box = self.layout.box()
+            # In popup we accept edits automatically for the convenience.
+            # Othrewise it seems very unintuitive, when you need to click confirmation twice.
+            if not is_popup:
+                row = box.row(align=True)
+                row.operator("bim.explorer_edit_entity", icon="CHECKMARK")
+                row.operator("bim.explorer_disable_editing_entity", icon="CANCEL", text="")
+            bonsai.bim.helper.draw_attributes(props.entity_attributes, box, enable_search=True)
+
+
+class BIM_UL_explorer(bpy.types.UIList):
+    def draw_item(
+        self,
+        context: bpy.types.Context,
+        layout: bpy.types.UILayout,
+        data: BIMExplorerProperties,
+        item: ExplorerEntity,
+        icon,
+        active_data,
+        active_propname,
+    ) -> None:
+        row = layout.row(align=True)
+
+        if item.ifc_definition_id == data.editing_entity_id:
+            row.label(text=item.name, icon="GREASEPENCIL")
+        else:
+            row.label(text=item.name)
@@ -42,6 +42,7 @@ import ifcopenshell.util.unit
 import bonsai.tool as tool
 import bonsai.bim.module.bcf.prop as bcf_prop
 import bonsai.bim.module.bcf.bcfstore as bcfstore
+from bpy_extras.io_utils import ImportHelper, ExportHelper
 from pathlib import Path
 from math import radians, degrees, atan, tan, cos, sin
 from mathutils import Vector, Matrix, Euler, geometry
@@ -63,12 +64,14 @@ class NewBcfProject(bpy.types.Operator):
        return {"FINISHED"}


-class LoadBcfProject(bpy.types.Operator):
+class LoadBcfProject(bpy.types.Operator, ImportHelper):
    bl_idname = "bim.load_bcf_project"
    bl_label = "Load BCF Project"
+    bl_description = "Load the BCF file."
    bl_options = {"REGISTER", "UNDO"}
    filepath: bpy.props.StringProperty(subtype="FILE_PATH", options={"SKIP_SAVE"})
    filter_glob: bpy.props.StringProperty(default="*.bcf;*.bcfzip", options={"HIDDEN"})
+    filename_ext = ".bcf"

    def execute(self, context):
        # Operator is also used when new project is created by not yet saved.
@@ -108,10 +111,6 @@ class LoadBcfProject(bpy.types.Operator):
        self.report({"INFO"}, f"BCF Project '{Path(self.filepath).name}' is loaded.")
        return {"FINISHED"}

-    def invoke(self, context, event):
-        context.window_manager.fileselect_add(self)
-        return {"RUNNING_MODAL"}
-

 class UnloadBcfProject(bpy.types.Operator):
    bl_idname = "bim.unload_bcf_project"
@@ -341,13 +340,15 @@ class EditBcfTopic(bpy.types.Operator):
        return {"FINISHED"}


-class SaveBcfProject(bpy.types.Operator):
+class SaveBcfProject(bpy.types.Operator, ExportHelper):
    bl_idname = "bim.save_bcf_project"
    bl_label = "Save BCF Project"
+    bl_description = "Save active BCF project by the provided filepath."
    bl_options = {"REGISTER", "UNDO"}
    filepath: bpy.props.StringProperty(subtype="FILE_PATH")
    filter_glob: bpy.props.StringProperty(default="*.bcf;*.bcfzip", options={"HIDDEN"})
    save_current_bcf: bpy.props.BoolProperty(default=False, options={"SKIP_SAVE"})
+    filename_ext = ".bcf"

    def execute(self, context):
        bcfxml = bcfstore.BcfStore.get_bcfxml()
@@ -364,8 +365,7 @@ class SaveBcfProject(bpy.types.Operator):
                self.filepath = str(path)
                return self.execute(context)

-        context.window_manager.fileselect_add(self)
-        return {"RUNNING_MODAL"}
+        return ExportHelper.invoke(self, context, event)


 class AddBcfTopic(bpy.types.Operator):
@@ -397,7 +397,7 @@ class AddBcfBimSnippet(bpy.types.Operator):
    def poll(cls, context):
        props = tool.Bcf.get_bcf_props()
        props_are_filled = all(
-            (getattr(props, attr) for attr in ("bim_snippet_reference", "bim_snippet_schema", "bim_snippet_type"))
+            getattr(props, attr) for attr in ("bim_snippet_reference", "bim_snippet_schema", "bim_snippet_type")
        )
        if not props_are_filled:
            cls.poll_message_set("Some BIM snippet fields are empty.")
@@ -1208,9 +1208,11 @@ class ActivateBcfViewpoint(bpy.types.Operator):
        self.file = tool.Ifc.get()
        bcfxml = bcfstore.BcfStore.get_bcfxml()
        assert bcfxml
+        assert context.scene

        props = tool.Bcf.get_bcf_props()
        blender_topic = props.active_topic
+        assert blender_topic
        topic = bcfxml.topics[blender_topic.name]
        if self.viewpoint_guid:
            viewpoint_guid = self.viewpoint_guid
@@ -1234,6 +1236,7 @@ class ActivateBcfViewpoint(bpy.types.Operator):
        cam_height = context.scene.render.resolution_y
        cam_aspect = cam_width / cam_height

+        assert isinstance(obj.data, bpy.types.Camera)
        obj.data.background_images.clear()
        if viewpoint.snapshot:
            obj.data.show_background_images = True
@@ -1273,7 +1276,7 @@ class ActivateBcfViewpoint(bpy.types.Operator):
        if tool.Bcf.get_viewpoint_bitmaps(viewpoint):
            self.create_bitmaps(bcfxml, viewpoint, topic)

-        self.setup_camera(viewpoint, obj, cam_aspect, context)
+        self.setup_camera(viewpoint, obj, cam_aspect, context, cam_height, cam_width)
        return {"FINISHED"}

    def setup_camera(
@@ -1282,7 +1285,10 @@ class ActivateBcfViewpoint(bpy.types.Operator):
        obj: bpy.types.Object,
        cam_aspect: float,
        context: bpy.types.Context,
+        cam_height: float,
+        cam_width: float,
    ) -> None:
+        assert isinstance(obj.data, bpy.types.Camera)
        if viewpoint.visualization_info.orthogonal_camera:
            camera = viewpoint.visualization_info.orthogonal_camera
            obj.data.type = "ORTHO"
@@ -1400,6 +1406,7 @@ class ActivateBcfViewpoint(bpy.types.Operator):
            self.hide_spaces(context)

    def hide_spaces(self, context: bpy.types.Context) -> None:
+        assert context.area
        old = context.area.type
        context.area.type = "VIEW_3D"
        bpy.ops.object.select_all(action="DESELECT")
@@ -1534,12 +1541,13 @@ class OpenBcfReferenceLink(bpy.types.Operator):
        return {"FINISHED"}


-class SelectBcfHeaderFile(bpy.types.Operator):
+class SelectBcfHeaderFile(bpy.types.Operator, ImportHelper):
    bl_idname = "bim.select_bcf_header_file"
    bl_label = "Select BCF Header File"
+    bl_description = "Select filepath for BCF header reference."
    bl_options = {"REGISTER", "UNDO"}
-    filepath: bpy.props.StringProperty(subtype="FILE_PATH")
    filter_glob: bpy.props.StringProperty(default="*.ifc;*.ifczip;*.ifcxml;*.ifcjson", options={"HIDDEN"})
+    filename_ext = ".ifc"

    def execute(self, context):
        if self.filepath:
@@ -1547,16 +1555,12 @@ class SelectBcfHeaderFile(bpy.types.Operator):
            props.file_reference = self.filepath
        return {"FINISHED"}

-    def invoke(self, context, event):
-        context.window_manager.fileselect_add(self)
-        return {"RUNNING_MODAL"}

-
-class SelectBcfBimSnippetReference(bpy.types.Operator):
+class SelectBcfBimSnippetReference(bpy.types.Operator, ImportHelper):
    bl_idname = "bim.select_bcf_bim_snippet_reference"
    bl_label = "Select BCF BIM Snippet Reference"
+    bl_description = "Select filepath for BCF snippet reference."
    bl_options = {"REGISTER", "UNDO"}
-    filepath: bpy.props.StringProperty(subtype="FILE_PATH")

    def execute(self, context):
        if self.filepath:
@@ -1564,16 +1568,12 @@ class SelectBcfBimSnippetReference(bpy.types.Operator):
            props.bim_snippet_reference = self.filepath
        return {"FINISHED"}

-    def invoke(self, context, event):
-        context.window_manager.fileselect_add(self)
-        return {"RUNNING_MODAL"}

-
-class SelectBcfDocumentReference(bpy.types.Operator):
+class SelectBcfDocumentReference(bpy.types.Operator, ImportHelper):
    bl_idname = "bim.select_bcf_document_reference"
    bl_label = "Select BCF Document Reference"
+    bl_description = "Select filepath for BCF document reference."
    bl_options = {"REGISTER", "UNDO"}
-    filepath: bpy.props.StringProperty(subtype="FILE_PATH")

    def execute(self, context):
        if self.filepath:
@@ -1581,10 +1581,6 @@ class SelectBcfDocumentReference(bpy.types.Operator):
            props.document_reference = self.filepath
        return {"FINISHED"}

-    def invoke(self, context, event):
-        context.window_manager.fileselect_add(self)
-        return {"RUNNING_MODAL"}
-

 class LoadBcfHeaderIfcFile(bpy.types.Operator):
    bl_idname = "bim.load_bcf_header_ifc_file"
@@ -31,9 +31,6 @@ from bpy.props import (
    FloatVectorProperty,
    CollectionProperty,
 )
-from functools import partial
-from typing import Literal
-from typing_extensions import assert_never
 from bcf.agnostic.extensions import get_extensions_attributes
 from typing import TYPE_CHECKING, Union

@@ -43,6 +43,8 @@ class BoundaryDecorator:
        cls.installed = None

    def draw_batch(self, shader_type, content_pos, color, indices=None):
+        if not tool.Blender.validate_shader_batch_data(content_pos, indices):
+            return
        shader = self.line_shader if shader_type == "LINES" else self.shader
        batch = batch_for_shader(shader, shader_type, {"pos": content_pos}, indices=indices)
        shader.uniform_float("color", color)
@@ -26,6 +26,7 @@ import numpy as np
 import multiprocessing
 import ifcopenshell.api
 import ifcopenshell.api.boundary
+import ifcopenshell.api.root
 import ifcopenshell.geom
 import ifcopenshell.util.unit
 import ifcopenshell.util.shape
@@ -72,13 +73,16 @@ class Loader:
        # ConnectionGeometry is optional in IFC schema for some reasons.
        if not boundary.ConnectionGeometry:
            return None
+        assert self.ifc_importer
+        assert self.operator
        surface = boundary.ConnectionGeometry.SurfaceOnRelatingElement
        # Workaround for invalid geometry provided by Revit. See https://github.com/Autodesk/revit-ifc/issues/270
        if surface.is_a("IfcCurveBoundedPlane") and not getattr(surface, "InnerBoundaries", None):
            surface.InnerBoundaries = ()
        try:
            shape = ifcopenshell.geom.create_shape(self.settings, surface)
-            mesh = self.ifc_importer.create_mesh(None, shape)
+            mesh = self.ifc_importer.create_mesh(boundary, shape)
+            assert mesh
            tool.Loader.link_mesh(shape, mesh)
        except RuntimeError:
            # Fallback solution for invalid geometry provided by Revit. (InnerBoundaries cuting OuterBoundary)
@@ -98,7 +102,8 @@ class Loader:
                return None
            mesh = bpy.data.meshes.new(str(surface.id()))
            bm = bmesh.new()
-            verts = [bm.verts.new(shape.verts[i : i + 3]) for i in range(0, len(shape.verts), 3)]
+            coords = ifcopenshell.util.shape.get_vertices(shape)
+            verts = [bm.verts.new(coord) for coord in coords]
            bm.faces.new(verts)
            for inner_boundary in surface.InnerBoundaries:
                try:
@@ -109,7 +114,9 @@ class Loader:
                        f"Skipping an inner boundary for IfcRelSpaceBoundary with ID {boundary.id()}. Geometry might be invalid",
                    )
                    return None
-                verts = [bm.verts.new(shape.verts[i : i + 3]) for i in range(0, len(shape.verts), 3)]
+                coords = ifcopenshell.util.shape.get_vertices(shape)
+                verts = [bm.verts.new(coord) for coord in coords]
+                bm.faces.new(verts)
                for i in range(len(verts) - 1):
                    bm.edges.new(verts[i : i + 2])
                bm.edges.new((verts[-1], verts[0]))
@@ -397,12 +404,13 @@ class EditBoundaryAttributes(bpy.types.Operator, tool.Ifc.Operator):
        assert obj
        bprops = tool.Boundary.get_object_boundary_props(obj)
        boundary = tool.Ifc.get_entity(obj)
+        assert boundary
        attributes = dict()
        for ifc_attribute, blender_property in EDITABLE_ATTRIBUTES.items():
            obj = getattr(bprops, blender_property, None)
            entity = tool.Ifc.get_entity(obj)
            attributes[blender_property] = entity
-        ifcopenshell.api.run("boundary.edit_attributes", tool.Ifc.get(), entity=boundary, **attributes)
+        ifcopenshell.api.boundary.edit_attributes(tool.Ifc.get(), entity=boundary, **attributes)
        bpy.ops.bim.disable_editing_boundary()
        return {"FINISHED"}

@@ -585,85 +593,82 @@ class DecorateBoundaries(bpy.types.Operator, tool.Ifc.Operator):
 class AddBoundary(bpy.types.Operator, tool.Ifc.Operator):
    bl_idname = "bim.add_boundary"
    bl_label = "Add Boundary"
+    bl_description = (
+        "There are two options for this operator:\n"
+        "- just 1 IfcSpace is selected - generate a boundary based on "
+        "potential nearby (0.1m) boundary elements.\n"
+        "- 1 IfcSpace and 1 IfcElement are selected - generate a boundary "
+        "for IfcSpace and use selected IfcElement as boundary's building element."
+    )
    bl_options = {"REGISTER", "UNDO"}

    def _execute(self, context):
-        relating_space = None
-        related_building_element = None
-        relating_space_obj = None
-        related_building_element_obj = None
-        parent_boundaries = []
+        parent_boundaries: list[ifcopenshell.entity_instance] = []

-        objs = context.selected_objects
+        objs = tool.Blender.get_selected_objects()
+        ifc_objects = {
+            element: obj
+            for obj in objs
+            if (element := tool.Ifc.get_entity(obj)) and isinstance(obj.data, bpy.types.Mesh) and obj.data.vertices
+        }

-        if not any((element := tool.Ifc.get_entity(obj)) and element.is_a("IfcSpace") for obj in objs):
-            self.report({"INFO"}, "No IfcSpace elements selected.")
-            return {"FINISHED"}
+        if len(ifc_objects) not in (1, 2):
+            self.report({"ERROR"}, "Please select one or two IFC elements.")
+            return {"CANCELLED"}
+
+        if not any(element.is_a("IfcSpace") for element in ifc_objects):
+            self.report({"ERROR"}, "One of the selected objects must be an IfcSpace.")
+            return {"CANCELLED"}

        if len(objs) == 2:
-            # The user may select two objects, a space and its related building element
-            for obj in objs:
-                element = tool.Ifc.get_entity(obj)
-                if not element:
-                    continue
-                if element.is_a("IfcSpace"):
-                    relating_space = element
-                    relating_space_obj = obj
-                else:
-                    related_building_element = element
-                    related_building_element_obj = obj
+            # Validate input.
+            space = next((e for e in ifc_objects.keys() if e.is_a("IfcSpace")), None)
+            if not space:
+                self.report({"ERROR"}, "One of the selected objects must be an IfcSpace.")
+                return {"CANCELLED"}
+            element = next((e for e in ifc_objects.keys() if e.is_a("IfcElement")), None)
+            if not element:
+                self.report({"ERROR"}, "One of the selected objects must be an IfcElement.")
+                return {"CANCELLED"}
+
            parent_boundary = self.create_element_boundary(
-                context, relating_space, relating_space_obj, related_building_element, related_building_element_obj
+                context, space, ifc_objects[space], element, ifc_objects[element]
            )
-            if parent_boundary:
-                parent_boundaries.append(parent_boundary)
+
+            if not parent_boundary:
+                self.report({"ERROR"}, "Failed to create a boundary.")
+                return {"FINISHED"}
+            parent_boundaries.append(parent_boundary)
+
        elif len(objs) == 1:
+            space = next(iter(ifc_objects))
+            if not space.is_a("IfcSpace"):
+                self.report({"ERROR"}, "1 element selected but it's not an IfcSpace - please, select IfcSpace..")
+                return {"CANCELLED"}
+
            # New prototype, old code not yet removed. Still testing.
-            space = tool.Ifc.get_entity(objs[0])
-            if space.is_a("IfcSpace"):
-                self.auto_generate_boundaries(space, objs[0])
-        elif len(objs) == 1:
-            # Optionally the user may select just the space, and the building element shall be auto-detected
-            # TODO : refactor to be able to generate all boundaries for selected space automatically or with an option
-
-            def msg(self, context):
-                self.layout.label(text="Please set an active container to detect space boundaries from.")
-
-            element = tool.Ifc.get_entity(objs[0])
-            if element.is_a("IfcSpace"):
-                relating_space = element
-                relating_space_obj = objs[0]
-
-            if not (container := tool.Root.get_default_container()):
-                bpy.context.window_manager.popup_menu(msg, title="Error", icon="ERROR")
-                return
-
-            for subelement in ifcopenshell.util.element.get_decomposition(container):
-                if not (
-                    subelement.is_a("IfcWall") or subelement.is_a("IfcSlab") or subelement.is_a("IfcVirtualElement")
-                ):
-                    continue
-                obj = tool.Ifc.get_object(subelement)
-                if obj:
-                    related_building_element = subelement
-                    related_building_element_obj = obj
-                    parent_boundary = self.create_element_boundary(
-                        context,
-                        relating_space,
-                        relating_space_obj,
-                        related_building_element,
-                        related_building_element_obj,
-                    )
-                    if parent_boundary:
-                        parent_boundaries.append(parent_boundary)
+            res = self.auto_generate_boundaries(space, ifc_objects[space])
+            if isinstance(res, str):
+                self.report({"ERROR"}, res)
+                return {"FINISHED"}
+            parent_boundaries.extend(res)

        bpy.ops.bim.show_boundaries()
        for parent_boundary in parent_boundaries:
            obj = tool.Ifc.get_object(parent_boundary)
            obj.select_set(True)

-    def auto_generate_boundaries(self, space, space_obj):
+    def auto_generate_boundaries(
+        self, space: ifcopenshell.entity_instance, space_obj: bpy.types.Object
+    ) -> Union[str, list[ifcopenshell.entity_instance]]:
+        """
+        :return: list of created boundaries or a string with error description.
+        """
+        ifc_file = tool.Ifc.get()
        props = tool.Model.get_model_props()
+        boundaries: list[ifcopenshell.entity_instance] = []
+        assert isinstance(space_obj.data, bpy.types.Mesh)
+
        # Identify all potential building elements
        # TODO: don't select everything, use AABB culling in Blender
        building_elements = (
@@ -672,6 +677,14 @@ class AddBoundary(bpy.types.Operator, tool.Ifc.Operator):
            + tool.Ifc.get().by_type("IfcVirtualElement")
        )

+        for building_element in building_elements:
+            if obj := tool.Ifc.get_object(building_element):
+                if tool.Ifc.is_moved(obj):
+                    bonsai.core.geometry.edit_object_placement(tool.Ifc, tool.Geometry, tool.Surveyor, obj=obj)
+
+        if tool.Ifc.is_moved(space_obj):
+            bonsai.core.geometry.edit_object_placement(tool.Ifc, tool.Geometry, tool.Surveyor, obj=space_obj)
+
        # Don't generate boundaries of building elements that we've already got bounaries for.
        for boundary in space.BoundedBy:
            if boundary.RelatedBuildingElement in building_elements:
@@ -683,12 +696,15 @@ class AddBoundary(bpy.types.Operator, tool.Ifc.Operator):
        shapes = {}
        settings = ifcopenshell.geom.settings()
        settings.set("disable-opening-subtractions", True)
-        iterator = ifcopenshell.geom.iterator(settings, tool.Ifc.get(), multiprocessing.cpu_count(), include=include)
+        iterator = ifcopenshell.geom.iterator(settings, ifc_file, multiprocessing.cpu_count(), include=include)
        if iterator.initialize():
            while True:
                tree.add_element(iterator.get_native())
                shape = iterator.get()
-                shapes[shape.id] = shape
+                shapes[shape.id] = {
+                    "verts": ifcopenshell.util.shape.get_vertices(shape.geometry),
+                    "faces": ifcopenshell.util.shape.get_faces(shape.geometry),
+                }
                if not iterator.next():
                    break

@@ -696,12 +712,12 @@ class AddBoundary(bpy.types.Operator, tool.Ifc.Operator):
        building_elements = [e for e in tree.select(space, extend=0.1) if e != space]

        if not building_elements:
-            return
+            return "No building elements found to create boundaries."

        # Create a dissolved bmesh for the space
        space_bm = bmesh.new()
        space_bm.from_mesh(space_obj.data)
-        bmesh.ops.dissolve_limit(space_bm, angle_limit=pi * 2 / 360, verts=space_bm.verts, edges=space_bm.edges)
+        bmesh.ops.dissolve_limit(space_bm, angle_limit=pi * 2 / 360, verts=space_bm.verts[:], edges=space_bm.edges[:])

        # Create dissolved bmeshes for all boundary elements
        building_element_bms = {}
@@ -709,13 +725,11 @@ class AddBoundary(bpy.types.Operator, tool.Ifc.Operator):
            bm = bmesh.new()
            shape = shapes[building_element.id()]

-            verts = ifcopenshell.util.shape.get_vertices(shape.geometry)
-            for vert in verts:
+            for vert in shape["verts"]:
                bm.verts.new(Vector(vert))
            bm.verts.ensure_lookup_table()

-            faces = ifcopenshell.util.shape.get_faces(shape.geometry)
-            for face in faces:
+            for face in shape["faces"]:
                bm.faces.new([bm.verts[i] for i in face])
            bm.verts.ensure_lookup_table()
            bm.faces.ensure_lookup_table()
@@ -779,7 +793,7 @@ class AddBoundary(bpy.types.Operator, tool.Ifc.Operator):
                    # we cheat by using the exterior boundary to mean "gross".
                    exterior_boundary_polygon = shapely.Polygon(gross_boundary_polygon.exterior.coords)

-                    parent_boundary = tool.Ifc.run("root.create_entity", ifc_class=props.boundary_class)
+                    parent_boundary = ifcopenshell.api.root.create_entity(ifc_file, ifc_class=props.boundary_class)
                    if building_element.is_a("IfcVirtualElement"):
                        parent_boundary.PhysicalOrVirtualBoundary = "VIRTUAL"
                    else:
@@ -811,6 +825,7 @@ class AddBoundary(bpy.types.Operator, tool.Ifc.Operator):
                        exterior_boundary_polygon, space_face_matrix
                    )
                    self.set_boundary_name(parent_boundary)
+                    boundaries.append(parent_boundary)

                    for rel in getattr(building_element, "HasOpenings", []):
                        opening = rel.RelatedOpeningElement
@@ -856,7 +871,7 @@ class AddBoundary(bpy.types.Operator, tool.Ifc.Operator):
                        if opening_polygon.intersection(exterior_boundary_polygon).area == 0:
                            continue

-                        boundary = tool.Ifc.run("root.create_entity", ifc_class=props.boundary_class)
+                        boundary = ifcopenshell.api.root.create_entity(ifc_file, ifc_class=props.boundary_class)
                        boundary.RelatingSpace = space
                        boundary.RelatedBuildingElement = filling or opening
                        boundary.ConnectionGeometry = self.create_connection_geometry_from_polygon(
@@ -870,29 +885,39 @@ class AddBoundary(bpy.types.Operator, tool.Ifc.Operator):
                        if boundary.is_a() != "IfcRelSpaceBoundary":
                            boundary.ParentBoundary = parent_boundary
                        self.set_boundary_name(boundary)
+                        boundaries.append(boundary)
+
+        return boundaries

    def create_element_boundary(
-        self, context, relating_space, relating_space_obj, related_building_element, related_building_element_obj
-    ):
-        if not relating_space or not related_building_element:
-            return
+        self,
+        context: bpy.types.Context,
+        space: ifcopenshell.entity_instance,
+        space_obj: bpy.types.Object,
+        building_element: ifcopenshell.entity_instance,
+        building_element_obj: bpy.types.Object,
+    ) -> Union[ifcopenshell.entity_instance, None]:
+        """Create element boundary for IfcSpace and IfcElement as building element.

+        :return: IfcRelSpaceBoundary or ``None`` if couldn't find a face on ``space_obj``
+            that would be close enough to ``related_building_element_obj``.
+        """
        props = tool.Model.get_model_props()
        # Find which face on space should be bounded to related building element
        # TODO: Handle round wall where multiple faces need to be bound to the same related building element
-        bm = bmesh.new()
-        bm.from_mesh(relating_space_obj.data)
-        bmesh.ops.dissolve_limit(bm, angle_limit=pi * 2 / 360, verts=bm.verts, edges=bm.edges)
+        space_bm = bmesh.new()
+        assert isinstance(space_obj.data, bpy.types.Mesh)
+        space_bm.from_mesh(space_obj.data)
+        bmesh.ops.dissolve_limit(space_bm, angle_limit=pi * 2 / 360, verts=space_bm.verts[:], edges=space_bm.edges[:])

        target_distance = inf
        target_face = None
-        for face in bm.faces:
-            centroid = relating_space_obj.matrix_world @ face.calc_center_median()
-            raycast = related_building_element_obj.closest_point_on_mesh(
-                related_building_element_obj.matrix_world.inverted() @ centroid, distance=1
-            )
+        to_building_obj_space = building_element_obj.matrix_world.inverted()
+        for face in space_bm.faces:
+            centroid = space_obj.matrix_world @ face.calc_center_median()
+            raycast = building_element_obj.closest_point_on_mesh(to_building_obj_space @ centroid, distance=1)
            if raycast[0]:
-                distance = (related_building_element_obj.matrix_world @ raycast[1] - centroid).length
+                distance = (building_element_obj.matrix_world @ raycast[1] - centroid).length
                if distance < target_distance:
                    target_face = face
                    target_distance = distance
@@ -907,9 +932,7 @@ class AddBoundary(bpy.types.Operator, tool.Ifc.Operator):

        target_face_polygon = shapely.Polygon([tuple((target_face_matrix_i @ v).xy) for v in target_face_verts])

-        related_building_element_polygon = self.get_flattened_polygon(
-            related_building_element, relating_space_obj, target_face_matrix_i
-        )
+        related_building_element_polygon = self.get_flattened_polygon(building_element, space_obj, target_face_matrix_i)

        gross_boundary_polygon = target_face_polygon.intersection(related_building_element_polygon)

@@ -925,7 +948,8 @@ class AddBoundary(bpy.types.Operator, tool.Ifc.Operator):
        ):
            return

-        parent_boundary = tool.Ifc.run("root.create_entity", ifc_class=props.boundary_class)
+        ifc_file = tool.Ifc.get()
+        parent_boundary = ifcopenshell.api.root.create_entity(ifc_file, ifc_class=props.boundary_class)
        parent_boundary.PhysicalOrVirtualBoundary = "PHYSICAL"
        # Set to EXTERNAL by default and turn later to internal if there is a corresponding boundary relating to an
        # internal space
@@ -938,14 +962,14 @@ class AddBoundary(bpy.types.Operator, tool.Ifc.Operator):
        # space.
        exterior_boundary_polygon = shapely.Polygon(gross_boundary_polygon.exterior.coords)

-        for rel in getattr(related_building_element, "HasOpenings", []):
+        for rel in getattr(building_element, "HasOpenings", []):
            opening = rel.RelatedOpeningElement
            if not opening.HasFillings:
                continue
            # TODO: HasFilling is a zero to many relationship. How to handle many ?
            filling = opening.HasFillings[0].RelatedBuildingElement

-            opening_polygon = self.get_flattened_polygon(opening, relating_space_obj, target_face_matrix_i)
+            opening_polygon = self.get_flattened_polygon(opening, space_obj, target_face_matrix_i)

            # An inner boundary is supposed to overlap its parent boundary according to IFC4 documentation
            # so we extend our exterior boundary with all opening which has a filling
@@ -960,11 +984,11 @@ class AddBoundary(bpy.types.Operator, tool.Ifc.Operator):
                continue

            connection_geometry = self.create_connection_geometry_from_polygon(opening_polygon, target_face_matrix)
-            boundary = tool.Ifc.run("root.create_entity", ifc_class=props.boundary_class)
-            boundary.RelatingSpace = relating_space
+            boundary = ifcopenshell.api.root.create_entity(ifc_file, ifc_class=props.boundary_class)
+            boundary.RelatingSpace = space
            boundary.RelatedBuildingElement = filling
            boundary.ConnectionGeometry = connection_geometry
-            if related_building_element.is_a("IfcVirtualElement"):
+            if building_element.is_a("IfcVirtualElement"):
                boundary.PhysicalOrVirtualBoundary = "VIRTUAL"
            else:
                boundary.PhysicalOrVirtualBoundary = "PHYSICAL"
@@ -976,20 +1000,23 @@ class AddBoundary(bpy.types.Operator, tool.Ifc.Operator):
        connection_geometry = self.create_connection_geometry_from_polygon(
            exterior_boundary_polygon, target_face_matrix
        )
-        parent_boundary.RelatingSpace = relating_space
-        parent_boundary.RelatedBuildingElement = related_building_element
+        parent_boundary.RelatingSpace = space
+        parent_boundary.RelatedBuildingElement = building_element
        parent_boundary.ConnectionGeometry = connection_geometry
        self.set_boundary_name(parent_boundary)
        return parent_boundary

-    def get_face_matrix(self, p1, p2, p3):
+    def get_face_matrix(self, p1: Vector, p2: Vector, p3: Vector) -> Matrix:
        edge1 = p2 - p1
        edge2 = p3 - p1
        normal = edge1.cross(edge2)
+        assert isinstance(normal, Vector)
+
        z_axis = normal.normalized()
        x_axis = p2 - p1
        x_axis.normalize()
        y_axis = z_axis.cross(x_axis)
+        assert isinstance(y_axis, Vector)

        mat = Matrix()
        mat.col[0][:3] = x_axis
@@ -1059,7 +1086,7 @@ class AddBoundary(bpy.types.Operator, tool.Ifc.Operator):

        return surface

-    def set_boundary_name(self, boundary):
+    def set_boundary_name(self, boundary: ifcopenshell.entity_instance):
        """
        By convention 1stLevel and 2ndLevel boundary have specific name and description
        See https://ifc43-docs.standards.buildingsmart.org/IFC/RELEASE/IFC4x3/HTML/lexical/IfcRelSpaceBoundary.htm
@@ -52,7 +52,7 @@ class BrickschemaData:
    def active_relations(cls):
        if BrickStore.graph is None:
            return []
-        props = bpy.context.scene.BIMBrickProperties
+        props = tool.Brick.get_brick_props()
        try:
            brick = props.bricks[props.active_brick_index]
        except:
@@ -22,29 +22,26 @@ import ifcopenshell.api
 import bonsai.tool as tool
 import bonsai.core.brick as core
 import bonsai.bim.handler
+from bpy_extras.io_utils import ImportHelper, ExportHelper
 from bonsai.bim.ifc import IfcStore
 from bonsai.tool.brick import BrickStore


-class LoadBrickProject(bpy.types.Operator, tool.Ifc.Operator):
+class LoadBrickProject(bpy.types.Operator, tool.Ifc.Operator, ImportHelper):
    bl_idname = "bim.load_brick_project"
    bl_label = "Load Brickschema Project"
    bl_options = {"REGISTER", "UNDO"}
    bl_description = "Load in a Brick project from a file"
-    filepath: bpy.props.StringProperty(subtype="FILE_PATH")
    filter_glob: bpy.props.StringProperty(default="*.ttl", options={"HIDDEN"})
+    filename_ext = ".ttl"

    def _execute(self, context):
        if os.path.exists(self.filepath) and "ttl" in os.path.splitext(self.filepath)[1].lower():
-            root = context.scene.BIMBrickProperties.brick_list_root
+            root = tool.Brick.get_brick_props().brick_list_root
            core.load_brick_project(tool.Brick, filepath=self.filepath, brick_root=root)
        else:
            self.report({"ERROR"}, f"Failed to load {self.filepath}")

-    def invoke(self, context, event):
-        context.window_manager.fileselect_add(self)
-        return {"RUNNING_MODAL"}
-

 class ViewBrickClass(bpy.types.Operator, tool.Ifc.Operator):
    bl_idname = "bim.view_brick_class"
@@ -111,10 +108,10 @@ class AssignBrickReference(bpy.types.Operator, tool.Ifc.Operator):
    bl_description = "Assign the selected Ifc entity to the selected Brick entity"

    def _execute(self, context):
-        if not context.active_object:
+        if not (obj := context.active_object) or not (element := tool.Ifc.get_entity(obj)):
            self.report({"ERROR"}, f"No Ifc selected")
            return
-        props = context.scene.BIMBrickProperties
+        props = tool.Brick.get_brick_props()
        try:
            props.bricks[props.active_brick_index]
        except:
@@ -123,7 +120,7 @@ class AssignBrickReference(bpy.types.Operator, tool.Ifc.Operator):
        core.assign_brick_reference(
            tool.Ifc,
            tool.Brick,
-            element=tool.Ifc.get_entity(context.active_object),
+            element=element,
            library=tool.Ifc.get().by_id(int(props.libraries)),
            brick_uri=props.bricks[props.active_brick_index].uri,
        )
@@ -136,7 +133,7 @@ class AddBrick(bpy.types.Operator, tool.Ifc.Operator):
    bl_description = "Create the Brick entity"

    def _execute(self, context):
-        props = context.scene.BIMBrickProperties
+        props = tool.Brick.get_brick_props()
        core.add_brick(
            tool.Ifc,
            tool.Brick,
@@ -155,7 +152,7 @@ class AddBrickRelation(bpy.types.Operator, tool.Ifc.Operator):
    bl_description = "Create the Brick relationship"

    def _execute(self, context):
-        props = context.scene.BIMBrickProperties
+        props = tool.Brick.get_brick_props()
        brick = props.bricks[props.active_brick_index]
        if props.new_brick_relation_type == "http://www.w3.org/2000/01/rdf-schema#label":
            object = props.new_brick_relation_object
@@ -173,7 +170,7 @@ class ConvertIfcToBrick(bpy.types.Operator, tool.Ifc.Operator):
    bl_description = "Convert Ifc entities and relations to Brick entities and relations"

    def _execute(self, context):
-        props = context.scene.BIMBrickProperties
+        props = tool.Brick.get_brick_props()
        library = None
        if props.libraries:
            library = tool.Ifc.get().by_id(int(props.libraries))
@@ -201,7 +198,8 @@ class NewBrickFile(bpy.types.Operator):
        return {"FINISHED"}

    def _execute(self, context):
-        root = context.scene.BIMBrickProperties.brick_list_root
+        props = tool.Brick.get_brick_props()
+        root = props.brick_list_root
        core.new_brick_file(tool.Brick, brick_root=root)

    def rollback(self, data):
@@ -230,7 +228,7 @@ class RemoveBrick(bpy.types.Operator, tool.Ifc.Operator):
    bl_description = "Delete this entity"

    def _execute(self, context):
-        props = context.scene.BIMBrickProperties
+        props = tool.Brick.get_brick_props()
        core.remove_brick(
            tool.Ifc,
            tool.Brick,
@@ -239,18 +237,20 @@ class RemoveBrick(bpy.types.Operator, tool.Ifc.Operator):
        )


-class SerializeBrick(bpy.types.Operator):
+class SerializeBrick(bpy.types.Operator, ExportHelper):
    bl_idname = "bim.serialize_brick"
    bl_label = "Serialize Brick"
+    # Prevents crash on Blender 4.4.0.
+    bl_description = "Save active Brick project by the provided filepath."
+
+    filename_ext = ".ttl"
    filter_glob: bpy.props.StringProperty(default="*.ttl", options={"HIDDEN"})
    filepath: bpy.props.StringProperty(subtype="FILE_PATH")
    should_save_as: bpy.props.BoolProperty(name="Should Save As", default=False, options={"HIDDEN"})

    def invoke(self, context, event):
        if self.should_save_as or not BrickStore.path:
-            WindowManager = context.window_manager
-            WindowManager.fileselect_add(self)
-            return {"RUNNING_MODAL"}
+            return ExportHelper.invoke(self, context, event)
        else:
            return self.execute(context)

@@ -273,7 +273,7 @@ class AddBrickNamespace(bpy.types.Operator, tool.Ifc.Operator):
    bl_description = "Bind a new namespace to the Brick project"

    def _execute(self, context):
-        props = context.scene.BIMBrickProperties
+        props = tool.Brick.get_brick_props()
        alias = props.new_brick_namespace_alias
        uri = props.new_brick_namespace_uri
        core.add_brick_namespace(tool.Brick, alias=alias, uri=uri)
@@ -288,6 +288,6 @@ class RemoveBrickRelation(bpy.types.Operator, tool.Ifc.Operator):
    object: bpy.props.StringProperty(name="Object")

    def _execute(self, context):
-        props = context.scene.BIMBrickProperties
+        props = tool.Brick.get_brick_props()
        brick = props.bricks[props.active_brick_index]
        core.remove_brick_relation(tool.Brick, brick_uri=brick.uri, predicate=self.predicate, object=self.object)
@@ -33,6 +33,7 @@ from bpy.props import (
 import bonsai.core.brick as core
 import bonsai.tool.brick as tool
 from bonsai.tool.brick import BrickStore
+from typing import TYPE_CHECKING


 def update_active_brick_index(self, context):
@@ -74,13 +75,13 @@ def get_brick_relations(self, context):
    return BRICK_RELATIONS_ENUM_ITEMS


-def update_view(self, context):
-    root = context.scene.BIMBrickProperties.brick_list_root
+def update_view(self: "BIMBrickProperties", context: bpy.types.Context) -> None:
+    root = self.brick_list_root
    core.set_brick_list_root(tool.Brick, brick_root=root, split_screen=False)


-def split_screen_update_view(self, context):
-    root = context.scene.BIMBrickProperties.split_screen_brick_list_root
+def split_screen_update_view(self: "BIMBrickProperties", context: bpy.types.Context) -> None:
+    root = self.split_screen_brick_list_root
    core.set_brick_list_root(tool.Brick, brick_root=root, split_screen=True)


@@ -90,6 +91,11 @@ class Brick(PropertyGroup):
    uri: StringProperty(name="URI")
    total_items: IntProperty(name="Total Items")

+    if TYPE_CHECKING:
+        label: str
+        uri: str
+        total_items: int
+

 class BIMBrickProperties(PropertyGroup):
    active_brick_class: StringProperty(name="Active Brick Class")
@@ -124,3 +130,28 @@ class BIMBrickProperties(PropertyGroup):
    split_screen_brick_list_root: EnumProperty(
        name="Split Screen Brick List Root", items=get_brick_roots, update=split_screen_update_view
    )
+
+    if TYPE_CHECKING:
+        active_brick_class: str
+        brick_breadcrumbs: bpy.types.bpy_prop_collection_idprop[StrProperty]
+        bricks: bpy.types.bpy_prop_collection_idprop[Brick]
+        active_brick_index: int
+        libraries: str
+        set_list_root_toggled: bool
+        brick_list_root: str
+        namespace: str
+        new_brick_namespace_alias: str
+        new_brick_namespace_uri: str
+        new_brick_label: str
+        brick_entity_create_type: str
+        brick_entity_class: str
+        brick_create_relations_toggled: bool
+        brick_edit_relations_toggled: bool
+        new_brick_relation_type: str
+        new_brick_relation_object: str
+        split_screen_toggled: bool
+        split_screen_bricks: bpy.types.bpy_prop_collection_idprop[Brick]
+        split_screen_active_brick_index: int
+        split_screen_active_brick_class: str
+        split_screen_brick_breadcrumbs: bpy.types.bpy_prop_collection_idprop[StrProperty]
+        split_screen_brick_list_root: str
@@ -45,7 +45,7 @@ class BIM_PT_brickschema_project_info(Panel):
    bl_parent_id = "BIM_PT_brickschema"

    def draw(self, context):
-        self.props = context.scene.BIMBrickProperties
+        self.props = tool.Brick.get_brick_props()

        if not BrickschemaData.data["is_loaded"]:
            row = self.layout.row(align=True)
@@ -87,7 +87,7 @@ class BIM_PT_brickschema_namespaces(Panel):
        return BrickStore.graph != None

    def draw(self, context):
-        self.props = context.scene.BIMBrickProperties
+        self.props = tool.Brick.get_brick_props()

        row = self.layout.row(align=True)
        row.label(text="Active Namespace:")
@@ -122,7 +122,7 @@ class BIM_PT_brickschema_create_entity(Panel):
        return BrickStore.graph != None

    def draw(self, context):
-        self.props = context.scene.BIMBrickProperties
+        self.props = tool.Brick.get_brick_props()
        # TO DO: hide this if selected entity already has a reference, or something similar

        row = self.layout.row(align=True)
@@ -156,7 +156,7 @@ class BIM_PT_brickschema_viewport(Panel):
        return BrickStore.graph != None

    def draw(self, context):
-        self.props = context.scene.BIMBrickProperties
+        self.props = tool.Brick.get_brick_props()

        row = self.layout.row(align=True)
        row.column().alignment = "RIGHT"
@@ -178,7 +178,14 @@ class BIM_PT_brickschema_viewport(Panel):

        row = grid_left.row()
        BIM_UL_bricks.split_screen = False
-        row.template_list("BIM_UL_bricks", "", self.props, "bricks", self.props, "active_brick_index")
+        row.template_list(
+            BIM_UL_bricks.__name__,
+            BIM_UL_bricks.__name__ + "_bricks",
+            self.props,
+            "bricks",
+            self.props,
+            "active_brick_index",
+        )

        if self.props.split_screen_toggled:
            grid_right = grid.column(align=True)
@@ -195,7 +202,12 @@ class BIM_PT_brickschema_viewport(Panel):
            row = grid_right.row()
            BIM_UL_bricks.split_screen = True
            row.template_list(
-                "BIM_UL_bricks", "", self.props, "split_screen_bricks", self.props, "split_screen_active_brick_index"
+                BIM_UL_bricks.__name__,
+                BIM_UL_bricks.__name__ + "_split_screen_bricks",
+                self.props,
+                "split_screen_bricks",
+                self.props,
+                "split_screen_active_brick_index",
            )

        if BrickschemaData.data["active_relations"]:
@@ -292,7 +304,7 @@ class BIM_PT_ifc_brickschema_references(Panel):
    def draw(self, context):
        if not BrickschemaReferencesData.is_loaded:
            BrickschemaReferencesData.load()
-        self.props = context.scene.BIMBrickProperties
+        self.props = tool.Brick.get_brick_props()

        if not BrickschemaReferencesData.data["is_loaded"]:
            row = self.layout.row()
@@ -20,16 +20,20 @@ import bpy
 from . import ui, prop, operator

 classes = (
-    operator.GetBSDDClassificationProperties,
-    operator.LoadBSDDDomains,
-    operator.SearchBSDDClass,
-    operator.SetActiveBSDDDictionary,
-    prop.BSDDDomain,
+    operator.AddBSDDProperties,
+    operator.ImportBSDDClasses,
+    operator.LoadBSDDDictionaries,
+    operator.SearchBSDDClassifications,
+    operator.SearchBSDDProperties,
+    prop.BSDDDictionary,
    prop.BSDDClassification,
+    prop.BSDDProperty,
    prop.BSDDPset,
    prop.BIMBSDDProperties,
-    ui.BIM_UL_bsdd_domains,
    ui.BIM_UL_bsdd_classifications,
+    ui.BIM_UL_bsdd_dictionaries,
+    ui.BIM_UL_bsdd_classes,
+    ui.BIM_UL_bsdd_properties,
    ui.BIM_PT_bsdd,
 )

@@ -0,0 +1,45 @@
+# Bonsai - OpenBIM Blender Add-on
+# Copyright (C) 2022 Dion Moult <dion@thinkmoult.com>
+#
+# This file is part of Bonsai.
+#
+# Bonsai is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# Bonsai is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with Bonsai.  If not, see <http://www.gnu.org/licenses/>.
+
+import bpy
+import ifcopenshell
+import ifcopenshell.util.date
+import ifcopenshell.util.classification
+import bonsai.tool as tool
+from bonsai.bim.ifc import IfcStore
+
+
+def refresh():
+    BSDDData.is_loaded = False
+
+
+class BSDDData:
+    data = {}
+    is_loaded = False
+
+    @classmethod
+    def load(cls):
+        cls.is_loaded = True
+        cls.data["active_dictionary"] = cls.active_dictionary()
+
+    @classmethod
+    def active_dictionary(cls):
+        props = tool.Bsdd.get_bsdd_props()
+        results = [("ALL", "All Dictionaries", "All active dictionaries")]
+        results.extend([(d.uri, d.name, f"{d.status} - {d.version}") for d in props.dictionaries if d.is_active])
+        return results
@@ -19,61 +19,89 @@
 import bpy
 import bsdd
 import bonsai.tool as tool
+import ifcopenshell.api.pset
+import ifcopenshell.util.element
 from bonsai.core import bsdd as core
+from typing import Any


-class LoadBSDDDomains(bpy.types.Operator):
-    bl_idname = "bim.load_bsdd_domains"
+class LoadBSDDDictionaries(bpy.types.Operator):
+    bl_idname = "bim.load_bsdd_dictionaries"
    bl_label = "Load bSDD Dictionaries"
    bl_options = {"REGISTER", "UNDO"}

    def execute(self, context):
-        core.load_bsdd(bsdd.Client(), tool.Bsdd)
+        core.load_bsdd(tool.Bsdd)
        return {"FINISHED"}


-class SetActiveBSDDDictionary(bpy.types.Operator):
-    bl_idname = "bim.set_active_bsdd_domain"
-    bl_label = "Set bSDD Dictionary as active"
-    bl_options = {"REGISTER", "UNDO"}
-    name: bpy.props.StringProperty()
-    uri: bpy.props.StringProperty()
-
-    def execute(self, context):
-        core.set_active_bsdd_dictionary(self.name, self.uri, tool.Bsdd)
-        return {"FINISHED"}
-
-
-class SearchBSDDClass(bpy.types.Operator):
+class SearchBSDDClassifications(bpy.types.Operator):
    bl_idname = "bim.search_bsdd_classifications"
    bl_label = "Search bSDD Class"
    bl_description = "Search for bSDD classes by the provided keyword"
    bl_options = {"REGISTER", "UNDO"}

-    @classmethod
-    def poll(cls, context):
-        # Requirement by buildingSMART bSDD api.
-        if len(context.scene.BIMBSDDProperties.keyword) < 3:
-            cls.poll_message_set("Search query has to be at least 3 characters long.")
-            return False
-        return True
-
    def execute(self, context):
-        keyword = context.scene.BIMBSDDProperties.keyword
-        classes_found = core.search_class(keyword, bsdd.Client(), tool.Bsdd)
-        self.report({"INFO"}, f"{classes_found} bSDD classes found for '{keyword}'.")
+        total = core.search_bsdd_class(tool.Bsdd, tool.Bsdd.get_bsdd_props().keyword)
+        self.report({"INFO"}, f"{total} bSDD classes found.")
        return {"FINISHED"}


-class GetBSDDClassificationProperties(bpy.types.Operator):
-    bl_idname = "bim.get_bsdd_classification_properties"
-    bl_label = "Search bSDD Class Properties"
-    bl_description = "Search for bSDD class properties for the currently selected class"
+class ImportBSDDClasses(bpy.types.Operator):
+    bl_idname = "bim.import_bsdd_classes"
+    bl_label = "Import bSDD Classes"
+    bl_description = "Load bSDD classes that apply to the current element"
    bl_options = {"REGISTER", "UNDO"}
+    obj: bpy.props.StringProperty()
+    obj_type: bpy.props.StringProperty()

    def execute(self, context):
-        pset_data = core.get_class_properties(bsdd.Client(), tool.Bsdd)
-        psets_found = len(pset_data)
-        props_found = sum(len(pset) for pset in pset_data.values())
-        self.report({"INFO"}, f"{psets_found} psets found ({props_found} props) for the active classification.")
+        props = tool.Bsdd.get_bsdd_props()
+        core.import_bsdd_classes(tool.Bsdd, self.obj, self.obj_type)
+        self.report({"INFO"}, f"{len(props.classes)} bSDD classes found.")
        return {"FINISHED"}
+
+
+class SearchBSDDProperties(bpy.types.Operator):
+    bl_idname = "bim.search_bsdd_properties"
+    bl_label = "Search bSDD Properties"
+    bl_description = "Search for bSDD properties that apply to the current element"
+    bl_options = {"REGISTER", "UNDO"}
+    obj: bpy.props.StringProperty()
+    obj_type: bpy.props.StringProperty()
+
+    def execute(self, context):
+        props = tool.Bsdd.get_bsdd_props()
+        core.search_bsdd_properties(tool.Bsdd, tool.Bsdd.get_bsdd_props().keyword, self.obj, self.obj_type)
+        self.report({"INFO"}, f"{len(props.properties)} bSDD properties found.")
+        return {"FINISHED"}
+
+
+class AddBSDDProperties(bpy.types.Operator, tool.Ifc.Operator):
+    bl_idname = "bim.add_bsdd_properties"
+    bl_label = "Add bSDD Properties"
+    bl_description = "Add selected bSDD properties to the active object"
+    bl_options = {"REGISTER", "UNDO"}
+    obj: bpy.props.StringProperty()
+    obj_type: bpy.props.StringProperty()
+
+    def _execute(self, context):
+        self.file = tool.Ifc.get()
+        bprops = tool.Bsdd.get_bsdd_props()
+
+        psets: dict[str, dict[str, Any]] = {}
+        for selected_property in bprops.selected_properties:
+            psets.setdefault(selected_property.metadata, {})[selected_property.name] = selected_property.get_value()
+
+        props = tool.Pset.get_pset_props(self.obj, self.obj_type)
+        ifc_definition_id = tool.Blender.get_obj_ifc_definition_id(self.obj, self.obj_type, context)
+        element = tool.Ifc.get().by_id(ifc_definition_id)
+        properties = {}
+
+        current_psets = ifcopenshell.util.element.get_psets(element, verbose=True)
+        for pset_name, properties in psets.items():
+            if pset := current_psets.get(pset_name, None):
+                pset = self.file.by_id(pset["id"])
+            else:
+                pset = ifcopenshell.api.pset.add_pset(self.file, product=element, name=pset_name)
+            ifcopenshell.api.pset.edit_pset(self.file, pset=pset, properties=properties)
@@ -17,7 +17,10 @@
 # along with Bonsai.  If not, see <http://www.gnu.org/licenses/>.

 import bpy
+import bonsai.tool as tool
 from bpy.types import PropertyGroup
+from bonsai.bim.module.bsdd.data import BSDDData
+from bonsai.bim.module.classification.data import ClassificationsData
 from bonsai.bim.prop import Attribute, StrProperty
 from bpy.props import (
    PointerProperty,
@@ -29,37 +32,121 @@ from bpy.props import (
    FloatVectorProperty,
    CollectionProperty,
 )
+from typing import Union, TYPE_CHECKING, Literal


-class BSDDDomain(PropertyGroup):
-    name: StringProperty(name="Name")
+def get_active_dictionary(self: "BIMBSDDProperties", context: object) -> tool.Blender.BLENDER_ENUM_ITEMS:
+    if not BSDDData.is_loaded:
+        BSDDData.load()
+    return BSDDData.data["active_dictionary"]
+
+
+def update_is_active(self: "BSDDDictionary", context: bpy.types.Context) -> None:
+    BSDDData.data["active_dictionary"] = BSDDData.active_dictionary()
+    if ClassificationsData.is_loaded:
+        props = tool.Classification.get_classification_props()
+        # Preserve original enum value.
+        classification_source = props.classification_source
+        ClassificationsData.data["classification_source"] = ClassificationsData.classification_source()
+
+        # Try to restore enum value.
+        if "classification_source" not in props:
+            # It's already on the default value, nothing to restore.
+            return
+        try:
+            props.classification_source = classification_source
+        except TypeError:
+            # Item is no longer active and not present in enum, fallback to the default.
+            del props["classification_source"]
+
+
+def update_is_selected(self: "BSDDProperty", context: bpy.types.Context) -> None:
+    tool.Bsdd.import_selected_properties()
+
+
+def update_active_class_index(self: "BIMBSDDProperties", context: bpy.types.Context) -> None:
+    tool.Bsdd.import_class_properties()
+    BSDDData.data["active_dictionary"] = BSDDData.active_dictionary()
+
+
+class BSDDDictionary(PropertyGroup):
    uri: StringProperty(name="URI")
    default_language_code: StringProperty(name="Language")
    organization_name_owner: StringProperty(name="Organization")
    status: StringProperty(name="Status")
    version: StringProperty(name="Version")
+    is_active: BoolProperty(
+        name="Is Active",
+        description="Enable to search with this dictionary",
+        default=False,
+        update=update_is_active,
+    )
+
+    if TYPE_CHECKING:
+        uri: str
+        default_language_code: str
+        organization_name_owner: str
+        status: str
+        version: str
+        is_active: bool


 class BSDDClassification(PropertyGroup):
-    name: StringProperty(name="Name")
    reference_code: StringProperty(name="Reference Code")
-    uri: StringProperty(name="Namespace URI")
-    domain_name: StringProperty(name="Domain Name")
-    domain_namespace_uri: StringProperty(name="Domain Namespace URI")
+    uri: StringProperty(name="URI")
+    dictionary_name: StringProperty(name="Dictionary Name")
+    dictionary_namespace_uri: StringProperty(name="Dictionary Namespace URI")
+
+    if TYPE_CHECKING:
+        reference_code: str
+        uri: str
+        dictionary_name: str
+        dictionary_namespace_uri: str
+
+
+class BSDDProperty(PropertyGroup):
+    code: StringProperty(name="Code")
+    uri: StringProperty(name="URI")
+    pset: StringProperty(name="Pset")
+    is_selected: BoolProperty(
+        name="Is Selected", description="Select to add or edit this property", default=False, update=update_is_selected
+    )
+
+    if TYPE_CHECKING:
+        code: str
+        uri: str
+        pset: str
+        is_selected: bool


 class BSDDPset(PropertyGroup):
-    name: StringProperty(name="Name")
    properties: CollectionProperty(name="Properties", type=Attribute)

+    if TYPE_CHECKING:
+        properties: bpy.types.bpy_prop_collection_idprop[Attribute]
+

 class BIMBSDDProperties(PropertyGroup):
-    active_domain: StringProperty(name="Active Domain")
+    # TODO: `active_dictionary` is not used anywhere?
+    active_dictionary: EnumProperty(items=get_active_dictionary, name="Active Dictionary")
    active_uri: StringProperty(name="Active URI")
-    domains: CollectionProperty(name="Domains", type=BSDDDomain)
-    active_domain_index: IntProperty(name="Active Domain Index")
+    dictionaries: CollectionProperty(name="Dictionaries", type=BSDDDictionary)
+    active_dictionary_index: IntProperty(name="Active Dictionary Index")
    classifications: CollectionProperty(name="Classifications", type=BSDDClassification)
    active_classification_index: IntProperty(name="Active Classification Index")
+    property_filter_mode: EnumProperty(
+        name="Property Filter Mode",
+        items=[
+            ("CLASS", "By Class", "Browse properties by class or group"),
+            ("KEYWORD", "By Keyword", "Search properties directly using a keyword"),
+        ],
+        default="CLASS",
+    )
+    classes: CollectionProperty(name="Classes", type=BSDDClassification)
+    active_class_index: IntProperty(name="Active Class Index", update=update_active_class_index)
+    properties: CollectionProperty(name="Properties", type=BSDDProperty)
+    active_property_index: IntProperty(name="Active Property Index")
+    selected_properties: CollectionProperty(name="Selected Properties", type=Attribute)
    keyword: StringProperty(name="Keyword", description="Query for bsdd classes search, case and accent insensitive")
    should_filter_ifc_class: BoolProperty(
        name="Filter Active IFC Class",
@@ -69,9 +156,29 @@ class BIMBSDDProperties(PropertyGroup):
    use_only_ifc_properties: BoolProperty(
        name="Only IFC Properties",
        description="Whether to display and assign only properties from IFC dictionary",
-        default=True,
-    )
-    load_preview_domains: BoolProperty(
-        name="Load Preview Domains", description="Whether it should load preview and inactive domains", default=False
+        default=False,
    )
    classification_psets: CollectionProperty(name="Classification Psets", type=BSDDPset)
+
+    if TYPE_CHECKING:
+        active_dictionary: str
+        active_dictionary: str
+        active_uri: str
+        dictionaries: bpy.types.bpy_prop_collection_idprop[BSDDDictionary]
+        active_dictionary_index: int
+        classifications: bpy.types.bpy_prop_collection_idprop[BSDDClassification]
+        active_classification_index: int
+        property_filter_mode: Literal["CLASS", "KEYWORD"]
+        classes: bpy.types.bpy_prop_collection_idprop[BSDDClassification]
+        active_class_index: int
+        properties: bpy.types.bpy_prop_collection_idprop[BSDDProperty]
+        active_property_index: int
+        selected_properties: bpy.types.bpy_prop_collection_idprop[Attribute]
+        keyword: str
+        should_filter_ifc_class: bool
+        use_only_ifc_properties: bool
+        classification_psets: bpy.types.bpy_prop_collection_idprop[BSDDPset]
+
+    @property
+    def active_class(self) -> Union[BSDDClassification, None]:
+        return tool.Blender.get_active_uilist_element(self.classes, self.active_class_index)
@@ -16,8 +16,15 @@
 # You should have received a copy of the GNU General Public License
 # along with Bonsai.  If not, see <http://www.gnu.org/licenses/>.

+from __future__ import annotations
+import bpy
 import bonsai.tool as tool
+from bonsai.bim.module.bsdd.data import BSDDData
 from bpy.types import Panel, UIList
+from typing import TYPE_CHECKING
+
+if TYPE_CHECKING:
+    from bonsai.bim.module.bsdd.prop import BIMBSDDProperties, BSDDDictionary, BSDDClassification, BSDDProperty


 class BIM_PT_bsdd(Panel):
@@ -30,71 +37,128 @@ class BIM_PT_bsdd(Panel):
    bl_parent_id = "BIM_PT_tab_project_setup"

    def draw(self, context):
-        props = context.scene.BIMBSDDProperties
+        if not BSDDData.is_loaded:
+            BSDDData.load()
+        props = tool.Bsdd.get_bsdd_props()
+        assert self.layout
        layout = self.layout
-        row = self.layout.row(align=True)
-        row.prop(props, "load_preview_domains")
-        if len(props.domains):
-            row.operator("bim.load_bsdd_domains", text="", icon="FILE_REFRESH")
-
-        if props.active_domain:
+        if len(props.dictionaries):
            row = self.layout.row()
-            row.label(text="Active: " + props.active_domain, icon="URL")
-        else:
-            row = self.layout.row()
-            row.label(text="No Active bSDD Domain", icon="ERROR")
+            row.operator("bim.load_bsdd_dictionaries", icon="FILE_REFRESH")

-        if len(props.domains):
+        if len(props.dictionaries):
            self.layout.template_list(
-                "BIM_UL_bsdd_domains",
+                "BIM_UL_bsdd_dictionaries",
                "",
                props,
-                "domains",
+                "dictionaries",
                props,
-                "active_domain_index",
+                "active_dictionary_index",
            )
-            if 0 <= props.active_domain_index < len(props.domains):
-                selected_domain = props.domains[props.active_domain_index]
+            if 0 <= props.active_dictionary_index < len(props.dictionaries):
+                selected_dictionary = props.dictionaries[props.active_dictionary_index]
            else:
-                selected_domain = None
+                selected_dictionary = None

-            if selected_domain:
-                layout.label(text="Selected domain:")
+            if selected_dictionary:
+                layout.label(text="Selected Dictionary:")
                box = layout.box()
                row = box.row(align=True)
                row.label(text="Language")
-                row.label(text=selected_domain.default_language_code)
+                row.label(text=selected_dictionary.default_language_code)
                row = box.row(align=True)
                row.label(text="Version")
-                row.label(text=selected_domain.version)
-                box.operator("bim.open_uri", text="Open bSDD In Browser", icon="URL").uri = selected_domain.uri
+                row.label(text=selected_dictionary.version)
+                box.operator("bim.open_uri", text="Open bSDD In Browser", icon="URL").uri = selected_dictionary.uri

        else:
            row = self.layout.row()
-            row.operator("bim.load_bsdd_domains")
+            row.operator("bim.load_bsdd_dictionaries")


-class BIM_UL_bsdd_domains(UIList):
-    def draw_item(self, context, layout, data, item, icon, active_data, active_propname):
+class BIM_UL_bsdd_dictionaries(UIList):
+    def draw_item(
+        self,
+        context,
+        layout: bpy.types.UILayout,
+        data: BIMBSDDProperties,
+        item: BSDDDictionary,
+        icon,
+        active_data,
+        active_propname,
+    ) -> None:
        if item:
-            props = context.scene.BIMBSDDProperties
            row = layout.row(align=True)
            if item.status != "Active":
-                row.label(text=f"{item.name} ({item.organization_name_owner}) - {item.status}", icon="ERROR")
+                row.label(
+                    text=f"{item.name} ({item.organization_name_owner}) v{item.version} - {item.status}", icon="ERROR"
+                )
            else:
-                row.label(text=f"{item.name} ({item.organization_name_owner})")
-            if item.uri == props.active_uri:
-                row.label(text="", icon="URL")
-            else:
-                op = row.operator("bim.set_active_bsdd_domain", text="", icon="RESTRICT_SELECT_OFF")
-                op.name = item.name
-                op.uri = item.uri
+                row.label(text=f"{item.name} ({item.organization_name_owner}) v{item.version}")
+            row.prop(
+                item, "is_active", icon="CHECKBOX_HLT" if item.is_active else "CHECKBOX_DEHLT", text="", emboss=False
+            )


 class BIM_UL_bsdd_classifications(UIList):
-    def draw_item(self, context, layout, data, item, icon, active_data, active_propname):
+    def draw_item(
+        self,
+        context,
+        layout: bpy.types.UILayout,
+        data: BIMBSDDProperties,
+        item: BSDDClassification,
+        icon,
+        active_data,
+        active_propname,
+    ) -> None:
        if item:
            row = layout.row(align=True)
            row.label(text=item.reference_code)
            row.label(text=item.name)
            row.operator("bim.open_uri", text="", icon="URL").uri = item.uri
+
+
+class BIM_UL_bsdd_classes(UIList):
+    def draw_item(
+        self,
+        context,
+        layout: bpy.types.UILayout,
+        data: BIMBSDDProperties,
+        item: BSDDClassification,
+        icon,
+        active_data,
+        active_propname,
+    ) -> None:
+        if item:
+            row = layout.row(align=True)
+            row.label(text=item.name)
+            row.operator("bim.open_uri", text="", icon="URL").uri = item.uri
+
+
+class BIM_UL_bsdd_properties(UIList):
+    def draw_item(
+        self,
+        context,
+        layout: bpy.types.UILayout,
+        data: BIMBSDDProperties,
+        item: BSDDProperty,
+        icon,
+        active_data,
+        active_propname,
+    ) -> None:
+        if item:
+            row = layout.row(align=True)
+            name = item.name
+            if name != item.code:
+                name += f" ({item.code})"
+            row.label(text=name)
+            if item.pset:
+                row.label(text=item.pset)
+            row.operator("bim.open_uri", text="", icon="URL").uri = item.uri
+            row.prop(
+                item,
+                "is_selected",
+                icon="CHECKBOX_HLT" if item.is_selected else "CHECKBOX_DEHLT",
+                text="",
+                emboss=False,
+            )
@@ -177,7 +177,7 @@ class CadFillet(bpy.types.Operator):
            selected_edges.append(cut_edges[1])

        # Calculate the distance to slide each edge to make space for the fillet arc
-        shared_vert = list(set(selected_edges[0].verts) & set(selected_edges[1].verts))[0]
+        shared_vert = next(iter(set(selected_edges[0].verts) & set(selected_edges[1].verts)))
        v1 = selected_edges[0].other_vert(shared_vert)
        v2 = selected_edges[1].other_vert(shared_vert)
        dir1 = (v1.co - shared_vert.co).normalized()
@@ -205,7 +205,7 @@ class CadFillet(bpy.types.Operator):
        # If faces are involved, then the chamfer edge protects existing faces from the newly created fillet.
        # If no faces are involved, we delete the chamfer edge.
        if is_wire:
-            chamfer_edge = [e for e in bm.edges if shared_vert in e.verts and v2 in e.verts][0]
+            chamfer_edge = next(e for e in bm.edges if shared_vert in e.verts and v2 in e.verts)
            bm.edges.remove(chamfer_edge)

        bm.verts.index_update()
@@ -564,7 +564,7 @@ class AddIfcCircle(bpy.types.Operator):

    def has_selected_existing_circle(self, context: bpy.types.Context) -> bool:
        obj = self.obj
-        bm = bmesh.from_edit_mesh(self, mesh)
+        bm = bmesh.from_edit_mesh(self.mesh)
        verts = [v for v in bm.verts if v.select and not v.hide]
        if len(verts) != 2:
            return False
@@ -675,7 +675,7 @@ class AddIfcArcIndexFillet(bpy.types.Operator):
        bm = bmesh.from_edit_mesh(self.mesh)
        edges = [e for e in bm.edges if e.select and not e.hide]

-        mid = list(set(edges[0].verts) & set(edges[1].verts))[0]
+        mid = next(iter(set(edges[0].verts) & set(edges[1].verts)))
        v1 = edges[0].other_vert(mid)
        v2 = edges[1].other_vert(mid)
        assert v1 and v2
@@ -738,7 +738,7 @@ class AddIfcArcIndexFillet(bpy.types.Operator):
        bmesh.ops.remove_doubles(bm, verts=all_verts, dist=1e-4)

        # Calculate the distance to slide each edge to make space for the fillet arc
-        shared_vert = list(set(selected_edges[0].verts) & set(selected_edges[1].verts))[0]
+        shared_vert = next(iter(set(selected_edges[0].verts) & set(selected_edges[1].verts)))
        v1 = selected_edges[0].other_vert(shared_vert)
        v2 = selected_edges[1].other_vert(shared_vert)
        assert v1 and v2
--- a/Show More
+++ b/Show More
@@ -1 +1 @@
 .8.2
 .8.4
				`@@ -0,0 +1 @@`
				`SVG [mustache](https://mustache.github.io/) templates that will be used for sheets and fill be filled with infromation from the sheet's IfcDocumentInformation attributes (e.g. Identification, Name, Revision, etc).`