Add Operator to populate Attributes with IFCPatch arguments

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

@@ -5,6 +5,7 @@ classes = (
     operator.SelectIfcPatchInput,
     operator.SelectIfcPatchOutput,
     operator.ExecuteIfcPatch,
+    operator.PopulatePatchArguments,
     prop.BIMPatchProperties,
     ui.BIM_PT_patch,
 )

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

@@ -1,6 +1,7 @@
 import os
 import bpy
 import json
+from .helper import extract_docs
 
 
 class SelectIfcPatchInput(bpy.types.Operator):
@@ -58,3 +59,49 @@ class ExecuteIfcPatch(bpy.types.Operator):
             }
         )
         return {"FINISHED"}
+
+
+class PopulatePatchArguments(bpy.types.Operator):
+    bl_idname = "bim.populate_patch_arguments"
+    bl_label = "Update IFC Patch arguments"
+    TYPE_BINDINGS = {
+        "str": "string",
+    
+    }
+    recipe: bpy.props.StringProperty()
+
+    def execute(self, context):
+        import importlib
+        import ifcpatch
+
+        patch_args = context.scene.BIMPatchProperties.ifc_patch_args_attr
+        patch_args.clear()
+        recipe = self.recipe
+        spec = importlib.util.spec_from_file_location(recipe, f"{ifcpatch.__path__[0]}/recipes/{recipe}.py")
+        patcher = importlib.util.module_from_spec(spec)
+        try:
+            spec.loader.exec_module(patcher)
+            try:
+                docs = extract_docs(patcher.Patcher, boilerplate_args=("src", "file", "logger", "args"))
+                if "inputs" in docs:
+                    for arg_name in docs["inputs"]:
+                        arg_info = docs["inputs"][arg_name]
+                        new_attr = patch_args.add()
+                        new_attr.data_type = self.TYPE_BINDINGS[arg_info["type"]]
+                        new_attr.name = arg_name
+                        if new_attr.data_type == "string":
+                            new_attr.string_value = arg_info.get("default", "")
+                        elif new_attr.data_type == "float":
+                            new_attr.float_value = arg_info.get("default", 0)
+                        elif new_attr.data_type == "integer":
+                            new_attr.int_value = arg_info.get("default", 0)
+                        elif new_attr.data_type == "boolean":
+                            new_attr.bool_value = arg_info.get("default", False)
+
+                        new_attr.description =arg_info.get("description", "")
+
+            except AttributeError as e:
+                print(e)
+        except ModuleNotFoundError as e:
+            print("Error : " + str(e) + "in " + str(patcher))    
+        return {"FINISHED"}

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

@@ -41,3 +41,4 @@ class BIMPatchProperties(PropertyGroup):
     ifc_patch_input: StringProperty(default="", name="IFC Patch Input IFC")
     ifc_patch_output: StringProperty(default="", name="IFC Patch Output IFC")
     ifc_patch_args: StringProperty(default="", name="Arguments")
+    ifc_patch_args_attr: CollectionProperty(type=Attribute, name="Arguments")

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

@@ -1,8 +1,12 @@
 import bpy
-from bpy.types import Panel
+import importlib
+import importlib.util
+import ifcpatch
+from .helper import extract_docs
+from .operator import PopulatePatchArguments
 
 
-class BIM_PT_patch(Panel):
+class BIM_PT_patch(bpy.types.Panel):
     bl_label = "IFC Patch"
     bl_idname = "BIM_PT_patch"
     bl_options = {"DEFAULT_CLOSED"}
@@ -16,17 +20,48 @@ class BIM_PT_patch(Panel):
 
         scene = context.scene
         props = scene.BIMPatchProperties
-
         row = layout.row()
-        row.prop(props, "ifc_patch_recipes")
+        row.prop(props, "ifc_patch_recipes")      
+        
+        recipe = props.ifc_patch_recipes
+
+        spec = importlib.util.spec_from_file_location(recipe, f"{ifcpatch.__path__[0]}/recipes/{recipe}.py")
+        patcher = importlib.util.module_from_spec(spec)
+        try:
+            spec.loader.exec_module(patcher)
+            try:
+                docs = extract_docs(patcher.Patcher, boilerplate_args=("src", "file", "logger", "args"))
+                if "name" in docs:
+                    layout.label(text=docs["name"])
+                if "description" in docs:
+                    for line in docs["description"].split("\n"):
+                        layout.label(text=line)
+            except AttributeError as e:
+                print(e)
+        except ModuleNotFoundError as e:
+            print("Error : " + str(e) + "in " + str(patcher))
+
         row = layout.row(align=True)
         row.prop(props, "ifc_patch_input")
         row.operator("bim.select_ifc_patch_input", icon="FILE_FOLDER", text="")
         row = layout.row(align=True)
         row.prop(props, "ifc_patch_output")
         row.operator("bim.select_ifc_patch_output", icon="FILE_FOLDER", text="")
-        row = layout.row()
-        row.prop(props, "ifc_patch_args")
+
+        op = layout.operator(PopulatePatchArguments.bl_idname)
+        op.recipe = recipe
+        if props.ifc_patch_args_attr:
+            for attr in props.ifc_patch_args_attr:
+                if attr.data_type == "string":
+                    box = layout.box()
+                    box.row().prop(attr, "string_value", text=attr.name)
+                    if attr.description != "":
+                        row = box.row(align=True)
+                        row.label(text="Description")
+                        row.label(text = attr.description)
+        else:
+            row = layout.row()
+            row.prop(props, "ifc_patch_args")
 
         row = layout.row()
         op = row.operator("bim.execute_ifc_patch")