Fixed #2900

1) Leaders text decorator wasn't changed after adding support for multiple literals
2) added drawing data update on toggling viewport annotations - so user would see correct values right away; also fixed similar thing on updating product

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

@@ -803,7 +803,12 @@ class LeaderDecorator(BaseDecorator):
         region3d = context.region_data
         dir = Vector((1, 0))
         pos = location_3d_to_region_2d(region, region3d, self.get_spline_end(obj))
-        self.draw_label(context, obj.BIMTextProperties.value, pos, dir, gap=0, center=False, vcenter=False)
+
+        props = obj.BIMTextProperties
+        text_data = props.get_text_edited_data() if props.is_editing else DecoratorData.get_ifc_text_data(obj)
+        text = text_data["Literals"][0]['CurrentValue']
+
+        self.draw_label(context, text, pos, dir, gap=0, center=False, vcenter=False)
 
 
 class RadiusDecorator(BaseDecorator):

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

@@ -1357,6 +1357,7 @@ class EditAssignedProduct(bpy.types.Operator, Operator):
         if context.active_object.BIMAssignedProductProperties.relating_product:
             product = tool.Ifc.get_entity(context.active_object.BIMAssignedProductProperties.relating_product)
         core.edit_assigned_product(tool.Ifc, tool.Drawing, obj=context.active_object, product=product)
+        tool.Blender.update_viewport()
 
 
 class EnableEditingAssignedProduct(bpy.types.Operator, Operator):

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

@@ -26,6 +26,7 @@ import blenderbim.core.drawing as core
 import blenderbim.bim.module.drawing.annotation as annotation
 import blenderbim.bim.module.drawing.decoration as decoration
 from blenderbim.bim.module.drawing.data import DrawingsData, DecoratorData
+from blenderbim.bim.module.drawing.data import refresh as refresh_drawing_data
 from pathlib import Path
 from blenderbim.bim.prop import Attribute, StrProperty
 from bpy.types import PropertyGroup
@@ -213,6 +214,7 @@ def toggleDecorations(self, context):
         collection = context.scene.camera.users_collection[0]
         for obj in collection.objects:
             tool.Drawing.update_text_value(obj)
+        refresh_drawing_data()
         decoration.DecorationsHandler.install(context)
     else:
         decoration.DecorationsHandler.uninstall()