Select material in materials UI #5647

Example - https://imgchest.com/p/6eyr8j8ag7p

src/bonsai/bonsai/bim/module/material/__init__.py

@@ -57,6 +57,7 @@ classes = (
     operator.RemoveProfile,
     operator.ReorderMaterialSetItem,
     operator.SelectByMaterial,
+    operator.SelectMaterialInMaterialsUI,
     operator.UnassignMaterial,
     operator.UnassignMaterialStyle,
     prop.Material,

src/bonsai/bonsai/bim/module/material/operator.py

@@ -30,6 +30,7 @@ import bonsai.core.material as core
 import bonsai.bim.module.model.profile as model_profile
 from bonsai.bim.module.material.prop import purge as material_prop_purge
 from bonsai.bim.ifc import IfcStore
+from typing import Any, Union
 
 
 class LoadMaterials(bpy.types.Operator):
@@ -854,3 +855,36 @@ class UnassignMaterialStyle(bpy.types.Operator, tool.Ifc.Operator):
         )
         core.load_materials(tool.Material, props.material_type)
         tool.Material.update_elements_using_material(material)
+
+
+class SelectMaterialInMaterialsUI(bpy.types.Operator):
+    bl_idname = "bim.material_ui_select"
+    bl_label = "Select Material In Materials UI"
+    bl_options = {"REGISTER", "UNDO"}
+    material_id: bpy.props.IntProperty()
+
+    def execute(self, context):
+        props = bpy.context.scene.BIMMaterialProperties
+        ifc_file = tool.Ifc.get()
+        material = ifc_file.by_id(self.material_id)
+        core.load_materials(tool.Material, material.is_a())
+
+        def get_material_item() -> Union[tuple[int, bpy.types.PropertyGroup], None]:
+            return next(
+                ((i, m) for i, m in enumerate(props.materials) if m.ifc_definition_id == self.material_id), None
+            )
+
+        material_item = get_material_item()
+
+        # Material category is contracted, won't occur for non-IfcMaterials.
+        if material_item is None:
+            material_category = tool.Material.get_material_category(material)
+            bpy.ops.bim.expand_material_category(category=material_category)
+            material_item = get_material_item()
+            assert material_item
+
+        item_index, _ = material_item
+        props.active_material_index = item_index
+
+        self.report({"INFO"}, f"Material '{material.Name}' is selected in Materials UI.")
+        return {"FINISHED"}

src/bonsai/bonsai/bim/module/material/ui.py

@@ -186,6 +186,8 @@ class BIM_PT_object_material(Panel):
                 op.material_set_usage = ObjectMaterialData.data["material_id"]
             row.operator("bim.disable_editing_assigned_material", icon="CANCEL", text="")
         else:
+            op = row.operator("bim.material_ui_select", icon="ZOOM_SELECTED", text="")
+            op.material_id = ObjectMaterialData.data["material_id"]
             row.operator("bim.enable_editing_assigned_material", icon="GREASEPENCIL", text="")
             row.operator("bim.unassign_material", icon="X", text="")
 

src/bonsai/bonsai/tool/material.py

@@ -73,6 +73,11 @@ class Material(bonsai.core.tool.Material):
             return props.materials[props.active_material_index]
         return None
 
+    @classmethod
+    def get_material_category(cls, material: ifcopenshell.entity_instance) -> str:
+        # IfcMaterial has Category since IFC4.
+        return getattr(material, "Category", None) or "Uncategorised"
+
     @classmethod
     def import_material_definitions(cls, material_type: str) -> None:
         props = bpy.context.scene.BIMMaterialProperties
@@ -99,8 +104,7 @@ class Material(bonsai.core.tool.Material):
 
             for m in materials:
                 # IfcMaterial has Category since IFC4.
-                category = getattr(m, "Category", None)
+                category = cls.get_material_category(m)
-                category = category or "Uncategorised"
                 categories[category].append(m)
 
             for category, mats in categories.items():