Improve drawing activation as per #6653 (#6659)

Drawings are now activated in a bit different way - not by the camera button located above the drawings list, but by using the camera indicator next to each drawing. Which allows do change active drawing very quickly. All activation options (shift+, alt+) are also available from this indicator.

Now - https://imgur.com/a/DmnWkul

Before - https://imgur.com/a/zjPDkPa

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

@@ -2195,13 +2195,6 @@ class ActivateDrawing(bpy.types.Operator, ActivateDrawingBase):
     should_view_from_camera: bpy.props.BoolProperty(name="Should View From Camera", default=True, options={"SKIP_SAVE"})
     use_quick_preview: bpy.props.BoolProperty(name="Use Quick Preview", default=False, options={"SKIP_SAVE"})
 
-    @classmethod
-    def poll(cls, context):
-        if not tool.Drawing.get_active_drawing_item():
-            cls.poll_message_set("No drawing selected.")
-            return False
-        return True
-
 
 class ActivateDrawingFromSheet(bpy.types.Operator, ActivateDrawingBase):
     bl_idname = "bim.activate_drawing_from_sheet"

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

@@ -281,9 +281,6 @@ class BIM_PT_drawings(Panel):
                 row3 = row.row(align=True)
                 row3.alignment = "RIGHT"
 
-                row3.operator("bim.activate_drawing", icon="OUTLINER_OB_CAMERA", text="").drawing = (
-                    active_drawing.ifc_definition_id
-                )
                 row3.operator("bim.activate_model", icon="VIEW3D", text="")
 
                 row3.separator(factor=0.5, type="SPACE")
@@ -641,14 +638,22 @@ class BIM_UL_drawinglist(bpy.types.UIList):
             row.label(text="", icon="BLANK1")
             selected_icon = "CHECKBOX_HLT" if item.is_selected else "CHECKBOX_DEHLT"
             row.prop(item, "is_selected", text="", icon=selected_icon, emboss=False)
+            row.separator(factor=0.5, type="SPACE")
             row.prop(item, "name", text="", emboss=False)
+            row.separator(factor=0.25, type="SPACE")
             self.props = tool.Drawing.get_document_props()
             if (
                 self.props.drawings
                 and self.props.active_drawing_id
                 and item.ifc_definition_id == self.props.active_drawing_id
             ):
-                row.label(text="", icon="OUTLINER_OB_CAMERA")
+                row.operator("bim.activate_drawing", text="", icon="VIEW_CAMERA", emboss=True, depress=True).drawing = (
+                    item.ifc_definition_id
+                )
+            else:
+                row.operator("bim.activate_drawing", text="", icon="VIEW_CAMERA_UNSELECTED", emboss=False).drawing = (
+                    item.ifc_definition_id
+                )
         else:
             if item.target_view == "PLAN_VIEW":
                 icon = "UV_FACESEL"