Fix #4647. Better error reporting if the user tries to activate a drawing that isn't available.

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

@@ -1515,7 +1515,14 @@ class ActivateDrawing(bpy.types.Operator):
         if not self.camera_view_point:
             viewport_position = tool.Blender.get_viewport_position()
 
-        core.activate_drawing_view(tool.Ifc, tool.Drawing, drawing=drawing)
+        try:
+            core.activate_drawing_view(tool.Ifc, tool.Blender, tool.Drawing, drawing=drawing)
+        except core.CameraNotAvailableError:
+            self.report(
+                {"ERROR"},
+                "The drawing view is not available. Ensure you have not excluded it in the active view layer.",
+            )
+            return {"CANCELLED"}
 
         if not self.camera_view_point:
             tool.Blender.set_viewport_position(viewport_position)

src/blenderbim/blenderbim/core/drawing.py

@@ -441,9 +441,19 @@ def select_assigned_product(drawing, context):
     drawing.select_assigned_product(context)
 
 
-def activate_drawing_view(ifc, drawing_tool, drawing):
+def activate_drawing_view(ifc, blender, drawing_tool, drawing):
     camera = ifc.get_object(drawing)
     if not camera:
         camera = drawing_tool.import_drawing(drawing)
         drawing_tool.import_annotations_in_group(drawing_tool.get_drawing_group(drawing))
+    blender.activate_camera(camera)
+    drawing_tool.isolate_camera_collection(camera)
+    try:
+        blender.set_active_object(camera)
+    except:
+        raise CameraNotAvailableError()
     drawing_tool.activate_drawing(camera)
+
+
+class CameraNotAvailableError(Exception):
+    pass

src/blenderbim/blenderbim/core/tool.py

@@ -18,6 +18,7 @@
 
 import abc
 import inspect
+from typing import Optional
 
 # fmt: off
 # pylint: skip-file
@@ -72,20 +73,21 @@ class Aggregate:
 
 @interface
 class Blender:
-    def set_active_object(cls, obj): pass
-    def get_name(cls, ifc_class, name): pass
-    def get_selected_objects(cls): pass
-    def create_ifc_object(cls, ifc_class: str, name: str = None, data=None): pass
-    def get_obj_ifc_definition_id(cls, obj=None, obj_type=None, context=None): pass
-    def is_ifc_object(cls, obj): pass
-    def is_ifc_class_active(cls, ifc_class): pass
-    def get_viewport_context(cls): pass
-    def update_viewport(cls): pass
-    def get_default_selection_keypmap(cls): pass
-    def get_object_bounding_box(cls, obj): pass
+    def activate_camera(cls, obj): pass
     def apply_bmesh(cls, mesh, bm, obj=None): pass
-    def get_bmesh_for_mesh(cls, mesh, clean=False): pass
     def bmesh_join(cls, bm_a, bm_b, callback=None): pass
+    def create_ifc_object(cls, ifc_class: str, name: Optional[str] = None, data=None): pass
+    def get_bmesh_for_mesh(cls, mesh, clean=False): pass
+    def get_default_selection_keypmap(cls): pass
+    def get_name(cls, ifc_class, name): pass
+    def get_obj_ifc_definition_id(cls, obj=None, obj_type=None, context=None): pass
+    def get_object_bounding_box(cls, obj): pass
+    def get_selected_objects(cls): pass
+    def get_viewport_context(cls): pass
+    def is_ifc_class_active(cls, ifc_class): pass
+    def is_ifc_object(cls, obj): pass
+    def set_active_object(cls, obj): pass
+    def update_viewport(cls): pass
 
 
 @interface

src/blenderbim/blenderbim/tool/blender.py

@@ -49,6 +49,23 @@ class Blender(blenderbim.core.tool.Blender):
     OBJECT_TYPES_THAT_SUPPORT_EDIT_GPENCIL_MODE = ("GPENCIL",)
     TYPE_MANAGER_ICON = "LIGHTPROBE_VOLUME" if bpy.app.version >= (4, 1, 0) else "LIGHTPROBE_GRID"
 
+    @classmethod
+    def activate_camera(cls, obj: bpy.types.Object) -> None:
+        area = tool.Blender.get_view3d_area()
+        is_local_view = area.spaces[0].local_view is not None
+        if is_local_view:
+            # Turn off local view before activating drawing, and then turn it on again.
+            for a in bpy.context.screen.areas:
+                if a.type == "VIEW_3D":
+                    override = bpy.context.copy()
+                    override["area"] = a
+                    bpy.ops.view3d.localview(override)
+            bpy.context.scene.camera = obj
+            bpy.ops.view3d.localview(override)
+        else:
+            bpy.context.scene.camera = obj
+        area.spaces[0].region_3d.view_perspective = "CAMERA"
+
     @classmethod
     def get_area_props(cls, context: bpy.types.Context) -> Any:
         try:
@@ -845,9 +862,7 @@ class Blender(blenderbim.core.tool.Blender):
             bpy.utils.register_tool(ws_model.PipeTool, after={"bim.duct_tool"}, separator=False, group=False)
             bpy.utils.register_tool(ws_model.BimTool, after={"bim.pipe_tool"}, separator=False, group=False)
             bpy.utils.register_tool(ws_drawing.AnnotationTool, after={"bim.bim_tool"}, separator=True, group=False)
-            bpy.utils.register_tool(
-                ws_spatial.SpatialTool, after={"bim.annotation_tool"}, separator=False, group=False
-            )
+            bpy.utils.register_tool(ws_spatial.SpatialTool, after={"bim.annotation_tool"}, separator=False, group=False)
             bpy.utils.register_tool(
                 ws_structural.StructuralTool, after={"bim.spatial_tool"}, separator=False, group=False
             )

src/blenderbim/blenderbim/tool/drawing.py

@@ -1743,21 +1743,7 @@ class Drawing(blenderbim.core.tool.Drawing):
         bpy.ops.bim.activate_model()
 
     @classmethod
-    def activate_drawing(cls, camera: bpy.types.Object) -> None:
-        area = tool.Blender.get_view3d_area()
-        is_local_view = area.spaces[0].local_view is not None
-        if is_local_view:
-            # turn off local view before activating drawing, and then turn it on again.
-            for a in bpy.context.screen.areas:
-                if a.type == "VIEW_3D":
-                    override = bpy.context.copy()
-                    override["area"] = a
-                    bpy.ops.view3d.localview(override)
-            bpy.context.scene.camera = camera
-            bpy.ops.view3d.localview(override)
-        else:
-            bpy.context.scene.camera = camera
-        area.spaces[0].region_3d.view_perspective = "CAMERA"
+    def isolate_camera_collection(cls, camera: bpy.types.Object) -> None:
         views_collection = bpy.data.collections.get("Views")
         for collection in views_collection.children:
             # We assume the project collection is at the top level
@@ -1775,8 +1761,9 @@ class Drawing(blenderbim.core.tool.Drawing):
                         camera.BIMObjectProperties.collection.name
                     ].hide_viewport = False
         camera.BIMObjectProperties.collection.hide_render = False
-        tool.Spatial.set_active_object(camera)
 
+    @classmethod
+    def activate_drawing(cls, camera: bpy.types.Object) -> None:
         # Sync viewport objects visibility with selectors from EPset_Drawing/Include and /Exclude
         drawing = tool.Ifc.get_entity(camera)