Object Mode: move to workspace struct

- Read-only access can often use EvaluationContext.object_mode
- Write access to go to WorkSpace.object_mode.
- Some TODO's remain (marked as "TODO/OBMODE")
- Add-ons will need updating
  (context.active_object.mode -> context.workspace.object_mode)
- There will be small/medium issues that still need resolving
  this does work on a basic level though.

See D3037

19 files changed, 114 insertions, 63 deletions

diff --git a/release/scripts/modules/bpy_extras/object_utils.py b/release/scripts/modules/bpy_extras/object_utils.py
index 04b3858bb0d..31938f3ad3e 100644
--- a/release/scripts/modules/bpy_extras/object_utils.py
+++ b/release/scripts/modules/bpy_extras/object_utils.py
@@ -119,6 +119,7 @@ def object_data_add(context, obdata, operator=None, name=None):
     :return: the newly created object in the scene.
     :rtype: :class:`bpy.types.Object`
     """
+    workspace = context.workspace
     scene = context.scene
     layer = context.view_layer
     layer_collection = context.layer_collection
@@ -146,9 +147,9 @@ def object_data_add(context, obdata, operator=None, name=None):
     # caused because entering edit-mode does not add a empty undo slot!
     if context.user_preferences.edit.use_enter_edit_mode:
         if not (obj_act and
-                obj_act.mode == 'EDIT' and
-                obj_act.type == obj_new.type):
-
+                obj_act.type == obj_new.type and
+                workspace.object_mode == 'EDIT'
+        ):
             _obdata = bpy.data.meshes.new(name)
             obj_act = bpy.data.objects.new(_obdata.name, _obdata)
             obj_act.matrix_world = obj_new.matrix_world
@@ -159,7 +160,10 @@ def object_data_add(context, obdata, operator=None, name=None):
             bpy.ops.ed.undo_push(message="Enter Editmode")
     # XXX
 
-    if obj_act and obj_act.mode == 'EDIT' and obj_act.type == obj_new.type:
+    if (obj_act and
+        obj_act.type == obj_new.type and
+        workspace.object_mode == 'EDIT'
+    ):
         bpy.ops.mesh.select_all(action='DESELECT')
         obj_act.select_set(action='SELECT')
         bpy.ops.object.mode_set(mode='OBJECT')
@@ -249,9 +253,10 @@ def object_image_guess(obj, bm=None):
     first checking the texture-faces, then the material.
     """
     # TODO, cycles/nodes materials
+    workspace = context.workspace
     me = obj.data
     if bm is None:
-        if obj.mode == 'EDIT':
+        if workspace.object_mode == 'EDIT':
             import bmesh
             bm = bmesh.from_edit_mesh(me)
 
diff --git a/release/scripts/modules/keyingsets_utils.py b/release/scripts/modules/keyingsets_utils.py
index 7ce5f3e029b..40e74e27ed2 100644
--- a/release/scripts/modules/keyingsets_utils.py
+++ b/release/scripts/modules/keyingsets_utils.py
@@ -57,9 +57,10 @@ def path_add_property(path, prop):
 
 # selected objects (active object must be in object mode)
 def RKS_POLL_selected_objects(ksi, context):
+    workspace = context.workspace
     ob = context.active_object
     if ob:
-        return ob.mode == 'OBJECT'
+        return workspace.object_mode == 'OBJECT'
     else:
         return bool(context.selected_objects)
 
@@ -67,8 +68,9 @@ def RKS_POLL_selected_objects(ksi, context):
 # selected bones
 def RKS_POLL_selected_bones(ksi, context):
     # we must be in Pose Mode, and there must be some bones selected
+    workspace = context.workspace
     ob = context.active_object
-    if ob and ob.mode == 'POSE':
+    if ob and workspace.object_mode == 'POSE':
         if context.active_pose_bone or context.selected_pose_bones:
             return True
 
@@ -87,8 +89,9 @@ def RKS_POLL_selected_items(ksi, context):
 
 # all selected objects or pose bones, depending on which we've got
 def RKS_ITER_selected_item(ksi, context, ks):
+    workspace = context.workspace
     ob = context.active_object
-    if ob and ob.mode == 'POSE':
+    if ob and workspace.object_mode == 'POSE':
         for bone in context.selected_pose_bones:
             ksi.generate(context, ks, bone)
     else:
diff --git a/release/scripts/startup/bl_operators/freestyle.py b/release/scripts/startup/bl_operators/freestyle.py
index 0cfe78879db..9b1d054cc15 100644
--- a/release/scripts/startup/bl_operators/freestyle.py
+++ b/release/scripts/startup/bl_operators/freestyle.py
@@ -53,6 +53,7 @@ class SCENE_OT_freestyle_fill_range_by_selection(bpy.types.Operator):
     def execute(self, context):
         import sys
 
+        workspace = context.workspace
         scene = context.scene
         view_layer = scene.view_layers.active
         lineset = view_layer.freestyle_settings.linesets.active
@@ -79,7 +80,7 @@ class SCENE_OT_freestyle_fill_range_by_selection(bpy.types.Operator):
             return {'CANCELLED'}
         # Find selected vertices in editmesh
         ob = context.active_object
-        if ob.type == 'MESH' and ob.mode == 'EDIT' and ob.name != ref.name:
+        if ob.type == 'MESH' and workspace.object_mode == 'EDIT' and ob.name != ref.name:
             bpy.ops.object.mode_set(mode='OBJECT')
             selected_verts = [v for v in ob.data.vertices if v.select]
             bpy.ops.object.mode_set(mode='EDIT')
@@ -143,6 +144,7 @@ class SCENE_OT_freestyle_add_edge_marks_to_keying_set(bpy.types.Operator):
 
     def execute(self, context):
         # active keying set
+        workspace = context.workspace
         scene = context.scene
         ks = scene.keying_sets.active
         if ks is None:
@@ -150,7 +152,7 @@ class SCENE_OT_freestyle_add_edge_marks_to_keying_set(bpy.types.Operator):
             ks.bl_description = ""
         # add data paths to the keying set
         ob = context.active_object
-        ob_mode = ob.mode
+        ob_mode = workspace.object_mode
         mesh = ob.data
         bpy.ops.object.mode_set(mode='OBJECT', toggle=False)
         for i, edge in enumerate(mesh.edges):
@@ -174,6 +176,7 @@ class SCENE_OT_freestyle_add_face_marks_to_keying_set(bpy.types.Operator):
 
     def execute(self, context):
         # active keying set
+        workspace = context.workspace
         scene = context.scene
         ks = scene.keying_sets.active
         if ks is None:
@@ -181,7 +184,7 @@ class SCENE_OT_freestyle_add_face_marks_to_keying_set(bpy.types.Operator):
             ks.bl_description = ""
         # add data paths to the keying set
         ob = context.active_object
-        ob_mode = ob.mode
+        ob_mode = workspace.object_mode
         mesh = ob.data
         bpy.ops.object.mode_set(mode='OBJECT', toggle=False)
         for i, polygon in enumerate(mesh.polygons):
diff --git a/release/scripts/startup/bl_operators/mesh.py b/release/scripts/startup/bl_operators/mesh.py
index c7a11c23c3f..ccc592e80b8 100644
--- a/release/scripts/startup/bl_operators/mesh.py
+++ b/release/scripts/startup/bl_operators/mesh.py
@@ -57,8 +57,9 @@ class MeshMirrorUV(Operator):
         precision = self.precision
         double_warn = 0
 
+        workspace = context.workspace
         ob = context.active_object
-        is_editmode = (ob.mode == 'EDIT')
+        is_editmode = (workspace.object_mode == 'EDIT')
         if is_editmode:
             bpy.ops.object.mode_set(mode='OBJECT', toggle=False)
 
diff --git a/release/scripts/startup/bl_operators/object.py b/release/scripts/startup/bl_operators/object.py
index 566487d9d0e..58f3afa3d6c 100644
--- a/release/scripts/startup/bl_operators/object.py
+++ b/release/scripts/startup/bl_operators/object.py
@@ -63,12 +63,13 @@ class SelectPattern(Operator):
             pattern_match = (lambda a, b:
                              fnmatch.fnmatchcase(a.upper(), b.upper()))
         is_ebone = False
+        workspace = context.workspace
         obj = context.object
-        if obj and obj.mode == 'POSE':
+        if obj and workspace.object_mode == 'POSE':
             items = obj.data.bones
             if not self.extend:
                 bpy.ops.pose.select_all(action='DESELECT')
-        elif obj and obj.type == 'ARMATURE' and obj.mode == 'EDIT':
+        elif obj and obj.type == 'ARMATURE' and workspace.object_mode == 'EDIT':
             items = obj.data.edit_bones
             if not self.extend:
                 bpy.ops.armature.select_all(action='DESELECT')
@@ -248,6 +249,8 @@ class SubdivisionSet(Operator):
         if not relative and level < 0:
             self.level = level = 0
 
+        workspace = context.workspace
+
         def set_object_subd(obj):
             for mod in obj.modifiers:
                 if mod.type == 'MULTIRES':
@@ -257,18 +260,18 @@ class SubdivisionSet(Operator):
                             for i in range(sub):
                                 bpy.ops.object.multires_subdivide(modifier="Multires")
 
-                        if obj.mode == 'SCULPT':
+                        if workspace.object_mode == 'SCULPT':
                             if mod.sculpt_levels != level:
                                 mod.sculpt_levels = level
-                        elif obj.mode == 'OBJECT':
+                        elif workspace.object_mode == 'OBJECT':
                             if mod.levels != level:
                                 mod.levels = level
                         return
                     else:
-                        if obj.mode == 'SCULPT':
+                        if workspace.object_mode == 'SCULPT':
                             if mod.sculpt_levels + level <= mod.total_levels:
                                 mod.sculpt_levels += level
-                        elif obj.mode == 'OBJECT':
+                        elif workspace.object_mode == 'OBJECT':
                             if mod.levels + level <= mod.total_levels:
                                 mod.levels += level
                         return
@@ -284,7 +287,7 @@ class SubdivisionSet(Operator):
 
             # add a new modifier
             try:
-                if obj.mode == 'SCULPT':
+                if workspace.object_mode == 'SCULPT':
                     mod = obj.modifiers.new("Multires", 'MULTIRES')
                     if level > 0:
                         for i in range(0, level):
@@ -467,8 +470,9 @@ class ShapeTransfer(Operator):
 
     @classmethod
     def poll(cls, context):
+        workspace = context.workspace
         obj = context.active_object
-        return (obj and obj.mode != 'EDIT')
+        return (obj and workspace.object_mode != 'EDIT')
 
     def execute(self, context):
         ob_act = context.active_object
@@ -508,10 +512,11 @@ class JoinUVs(Operator):
 
     def _main(self, context):
         import array
+        workspace = context.workspace
         obj = context.active_object
         mesh = obj.data
 
-        is_editmode = (obj.mode == 'EDIT')
+        is_editmode = (workspace.object_mode == 'EDIT')
         if is_editmode:
             bpy.ops.object.mode_set(mode='OBJECT', toggle=False)
 
diff --git a/release/scripts/startup/bl_operators/object_quick_effects.py b/release/scripts/startup/bl_operators/object_quick_effects.py
index ae64caca91e..9fa6dbf6eef 100644
--- a/release/scripts/startup/bl_operators/object_quick_effects.py
+++ b/release/scripts/startup/bl_operators/object_quick_effects.py
@@ -73,9 +73,10 @@ class QuickFur(Operator):
             )
 
     def execute(self, context):
+        workspace = context.workspace
         fake_context = context.copy()
         mesh_objects = [obj for obj in context.selected_objects
-                        if obj.type == 'MESH' and obj.mode == 'OBJECT']
+                        if obj.type == 'MESH' and workspace.object_mode == 'OBJECT']
 
         if not mesh_objects:
             self.report({'ERROR'}, "Select at least one mesh object")
diff --git a/release/scripts/startup/bl_operators/uvcalc_lightmap.py b/release/scripts/startup/bl_operators/uvcalc_lightmap.py
index 61ceb3c04c4..dde98ce9013 100644
--- a/release/scripts/startup/bl_operators/uvcalc_lightmap.py
+++ b/release/scripts/startup/bl_operators/uvcalc_lightmap.py
@@ -558,8 +558,8 @@ def lightmap_uvpack(meshes,
 
 
 def unwrap(operator, context, **kwargs):
-
-    is_editmode = (context.object.mode == 'EDIT')
+    workspace = context.workspace
+    is_editmode = (workspace.object_mode == 'EDIT')
     if is_editmode:
         bpy.ops.object.mode_set(mode='OBJECT', toggle=False)
 
diff --git a/release/scripts/startup/bl_operators/uvcalc_smart_project.py b/release/scripts/startup/bl_operators/uvcalc_smart_project.py
index 25783653414..f648bebed26 100644
--- a/release/scripts/startup/bl_operators/uvcalc_smart_project.py
+++ b/release/scripts/startup/bl_operators/uvcalc_smart_project.py
@@ -748,7 +748,8 @@ def main(context,
     USER_FILL_HOLES_QUALITY = 50 # Only for hole filling.
     USER_VIEW_INIT = 0 # Only for hole filling.
 
-    is_editmode = (context.active_object.mode == 'EDIT')
+    workspace = context.workspace
+    is_editmode = (workspace.object_mode == 'EDIT')
     if is_editmode:
         obList =  [ob for ob in [context.active_object] if ob and ob.type == 'MESH']
     else:
@@ -781,7 +782,7 @@ def main(context,
 
 
     # Toggle Edit mode
-    is_editmode = (context.active_object.mode == 'EDIT')
+    is_editmode = (workspace.object_mode == 'EDIT')
     if is_editmode:
         bpy.ops.object.mode_set(mode='OBJECT')
     # Assume face select mode! an annoying hack to toggle face select mode because Mesh doesn't like faceSelectMode.
diff --git a/release/scripts/startup/bl_operators/view3d.py b/release/scripts/startup/bl_operators/view3d.py
index 18f91110053..e54ead6a5fc 100644
--- a/release/scripts/startup/bl_operators/view3d.py
+++ b/release/scripts/startup/bl_operators/view3d.py
@@ -30,8 +30,9 @@ class VIEW3D_OT_edit_mesh_extrude_individual_move(Operator):
 
     @classmethod
     def poll(cls, context):
+        workspace = context.workspace
         obj = context.active_object
-        return (obj is not None and obj.mode == 'EDIT')
+        return (obj is not None and workspace.object_mode == 'EDIT')
 
     def execute(self, context):
         mesh = context.object.data
@@ -68,8 +69,9 @@ class VIEW3D_OT_edit_mesh_extrude_move(Operator):
 
     @classmethod
     def poll(cls, context):
+        workspace = context.workspace
         obj = context.active_object
-        return (obj is not None and obj.mode == 'EDIT')
+        return (obj is not None and workspace.object_mode == 'EDIT')
 
     @staticmethod
     def extrude_region(context, use_vert_normals):
@@ -117,8 +119,9 @@ class VIEW3D_OT_edit_mesh_extrude_shrink_fatten(Operator):
 
     @classmethod
     def poll(cls, context):
+        workspace = context.workspace
         obj = context.active_object
-        return (obj is not None and obj.mode == 'EDIT')
+        return (obj is not None and workspace.object_mode == 'EDIT')
 
     def execute(self, context):
         return VIEW3D_OT_edit_mesh_extrude_move.extrude_region(context, True)
@@ -173,7 +176,8 @@ class VIEW3D_OT_select_or_deselect_all(Operator):
     def poll(cls, context):
         active_object = context.active_object
         if active_object:
-            return active_object.mode in {'EDIT', 'OBJECT', 'POSE'}
+            workspace = context.workspace
+            return workspace.object_mode in {'EDIT', 'OBJECT', 'POSE'}
         return True
 
     def invoke(self, context, event):
@@ -184,7 +188,9 @@ class VIEW3D_OT_select_or_deselect_all(Operator):
             active_object = context.active_object
 
             if active_object:
-                if active_object.mode == 'EDIT':
+                workspace = context.workspace
+                object_mode = workspace.object_mode
+                if object_mode == 'EDIT':
                     if active_object.type == 'MESH':
                         bpy.ops.mesh.select_all(action='DESELECT')
                     elif active_object.type == 'CURVE':
@@ -197,9 +203,9 @@ class VIEW3D_OT_select_or_deselect_all(Operator):
                         bpy.ops.mball.select_all(action='DESELECT')
                     elif active_object.type == 'ARMATURE':
                         bpy.ops.armature.select_all(action='DESELECT')
-                elif active_object.mode == 'POSE':
+                elif object_mode == 'POSE':
                     bpy.ops.pose.select_all(action='DESELECT')
-                elif active_object.mode == 'PARTICLE_EDIT':
+                elif object_mode == 'PARTICLE_EDIT':
                     bpy.ops.particle.select_all(action='DESELECT')
                 else:
                     bpy.ops.object.select_all(action='DESELECT')
diff --git a/release/scripts/startup/bl_ui/properties_constraint.py b/release/scripts/startup/bl_ui/properties_constraint.py
index 9b61101778f..f374d95c493 100644
--- a/release/scripts/startup/bl_ui/properties_constraint.py
+++ b/release/scripts/startup/bl_ui/properties_constraint.py
@@ -910,8 +910,9 @@ class OBJECT_PT_constraints(ConstraintButtonsPanel, Panel):
         layout = self.layout
 
         obj = context.object
+        workspace = context.workspace
 
-        if obj.type == 'ARMATURE' and obj.mode == 'POSE':
+        if obj.type == 'ARMATURE' and workspace.object_mode == 'POSE':
             box = layout.box()
             box.alert = True  # XXX: this should apply to the box background
             box.label(icon='INFO', text="Constraints for active bone do not live here")
diff --git a/release/scripts/startup/bl_ui/properties_data_bone.py b/release/scripts/startup/bl_ui/properties_data_bone.py
index f0ef0032059..e8f290772d8 100644
--- a/release/scripts/startup/bl_ui/properties_data_bone.py
+++ b/release/scripts/startup/bl_ui/properties_data_bone.py
@@ -58,7 +58,8 @@ class BONE_PT_transform(BoneButtonsPanel, Panel):
             return True
 
         ob = context.object
-        return ob and ob.mode == 'POSE' and context.bone
+        workspace = context.workspace
+        return ob and workspace.object_mode == 'POSE' and context.bone
 
     def draw(self, context):
         layout = self.layout
@@ -110,7 +111,8 @@ class BONE_PT_transform_locks(BoneButtonsPanel, Panel):
     @classmethod
     def poll(cls, context):
         ob = context.object
-        return ob and ob.mode == 'POSE' and context.bone
+        workspace = context.workspace
+        return ob and workspace.object_mode == 'POSE' and context.bone
 
     def draw(self, context):
         layout = self.layout
@@ -311,7 +313,8 @@ class BONE_PT_inverse_kinematics(BoneButtonsPanel, Panel):
     @classmethod
     def poll(cls, context):
         ob = context.object
-        return ob and ob.mode == 'POSE' and context.bone
+        workspace = context.workspace
+        return ob and workspace.object_mode == 'POSE' and context.bone
 
     def draw(self, context):
         layout = self.layout
@@ -439,7 +442,8 @@ class BONE_PT_custom_props(BoneButtonsPanel, PropertyPanel, Panel):
     @property
     def _context_path(self):
         obj = bpy.context.object
-        if obj and obj.mode == 'POSE':
+        workspace = context.workspace
+        if obj and workspace.object_mode == 'POSE':
             return "active_pose_bone"
         else:
             return "active_bone"
diff --git a/release/scripts/startup/bl_ui/properties_data_mesh.py b/release/scripts/startup/bl_ui/properties_data_mesh.py
index 9f927fe3368..ee6e09039be 100644
--- a/release/scripts/startup/bl_ui/properties_data_mesh.py
+++ b/release/scripts/startup/bl_ui/properties_data_mesh.py
@@ -94,10 +94,13 @@ class MESH_UL_shape_keys(UIList):
         # key = data
         key_block = item
         if self.layout_type in {'DEFAULT', 'COMPACT'}:
+            workspace = context.workspace
             split = layout.split(0.66, False)
             split.prop(key_block, "name", text="", emboss=False, icon_value=icon)
             row = split.row(align=True)
-            if key_block.mute or (obj.mode == 'EDIT' and not (obj.use_shape_key_edit_mode and obj.type == 'MESH')):
+            if (key_block.mute or
+                (workspace.object_mode == 'EDIT' and not (obj.use_shape_key_edit_mode and obj.type == 'MESH'))
+            ):
                 row.active = False
             if not item.id_data.use_relative:
                 row.prop(key_block, "frame", text="", emboss=False)
@@ -205,6 +208,7 @@ class DATA_PT_vertex_groups(MeshButtonsPanel, Panel):
     def draw(self, context):
         layout = self.layout
 
+        workspace = context.workspace
         ob = context.object
         group = ob.vertex_groups.active
 
@@ -225,7 +229,10 @@ class DATA_PT_vertex_groups(MeshButtonsPanel, Panel):
             col.operator("object.vertex_group_move", icon='TRIA_UP', text="").direction = 'UP'
             col.operator("object.vertex_group_move", icon='TRIA_DOWN', text="").direction = 'DOWN'
 
-        if ob.vertex_groups and (ob.mode == 'EDIT' or (ob.mode == 'WEIGHT_PAINT' and ob.type == 'MESH' and ob.data.use_paint_mask_vertex)):
+        if (ob.vertex_groups and
+            ((workspace.object_mode == 'EDIT') or
+             (workspace.object_mode == 'WEIGHT_PAINT' and ob.type == 'MESH' and ob.data.use_paint_mask_vertex))
+        ):
             row = layout.row()
 
             sub = row.row(align=True)
@@ -251,6 +258,7 @@ class DATA_PT_face_maps(MeshButtonsPanel, Panel):
     def draw(self, context):
         layout = self.layout
 
+        workspace = context.workspace
         ob = context.object
         facemap = ob.face_maps.active
 
@@ -269,7 +277,7 @@ class DATA_PT_face_maps(MeshButtonsPanel, Panel):
             col.operator("object.face_map_move", icon='TRIA_UP', text="").direction = 'UP'
             col.operator("object.face_map_move", icon='TRIA_DOWN', text="").direction = 'DOWN'
 
-        if ob.face_maps and (ob.mode == 'EDIT' and ob.type == 'MESH'):
+        if ob.face_maps and (workspace.object_mode == 'EDIT' and ob.type == 'MESH'):
             row = layout.row()
 
             sub = row.row(align=True)
@@ -293,11 +301,12 @@ class DATA_PT_shape_keys(MeshButtonsPanel, Panel):
     def draw(self, context):
         layout = self.layout
 
+        workspace = context.workspace
         ob = context.object
         key = ob.data.shape_keys
         kb = ob.active_shape_key
 
-        enable_edit = ob.mode != 'EDIT'
+        enable_edit = workspace.object_mode != 'EDIT'
         enable_edit_value = False
 
         if ob.show_only_shape_key is False:
@@ -419,6 +428,7 @@ class DATA_PT_customdata(MeshButtonsPanel, Panel):
     def draw(self, context):
         layout = self.layout
 
+        workspace = context.workspace
         obj = context.object
         me = context.mesh
         col = layout.column()
@@ -433,7 +443,7 @@ class DATA_PT_customdata(MeshButtonsPanel, Panel):
 
         col = layout.column()
 
-        col.enabled = (obj.mode != 'EDIT')
+        col.enabled = (workspace.object_mode != 'EDIT')
         col.prop(me, "use_customdata_vertex_bevel")
         col.prop(me, "use_customdata_edge_bevel")
         col.prop(me, "use_customdata_edge_crease")
diff --git a/release/scripts/startup/bl_ui/properties_data_modifier.py b/release/scripts/startup/bl_ui/properties_data_modifier.py
index 3169878ffe3..599b7c943a4 100644
--- a/release/scripts/startup/bl_ui/properties_data_modifier.py
+++ b/release/scripts/startup/bl_ui/properties_data_modifier.py
@@ -414,6 +414,8 @@ class DATA_PT_modifiers(ModifierButtonsPanel, Panel):
         layout.label(text="Settings are inside the Physics tab")
 
     def HOOK(self, layout, ob, md):
+        from bpy import context
+        workspace = context.workspace
         use_falloff = (md.falloff_type != 'NONE')
         split = layout.split()
 
@@ -445,7 +447,7 @@ class DATA_PT_modifiers(ModifierButtonsPanel, Panel):
         col = split.column()
         col.prop(md, "use_falloff_uniform")
 
-        if ob.mode == 'EDIT':
+        if workspace.object_mode == 'EDIT':
             row = col.row(align=True)
             row.operator("object.hook_reset", text="Reset")
             row.operator("object.hook_recenter", text="Recenter")
@@ -601,6 +603,9 @@ class DATA_PT_modifiers(ModifierButtonsPanel, Panel):
         col.prop(md, "mirror_object", text="")
 
     def MULTIRES(self, layout, ob, md):
+        from bpy import context
+        workspace = context.workspace
+
         layout.row().prop(md, "subdivision_type", expand=True)
 
         split = layout.split()
@@ -611,7 +616,7 @@ class DATA_PT_modifiers(ModifierButtonsPanel, Panel):
 
         col = split.column()
 
-        col.enabled = ob.mode != 'EDIT'
+        col.enabled = workspace.object_mode != 'EDIT'
         col.operator("object.multires_subdivide", text="Subdivide")
         col.operator("object.multires_higher_levels_delete", text="Delete Higher")
         col.operator("object.multires_reshape", text="Reshape")
diff --git a/release/scripts/startup/bl_ui/properties_material.py b/release/scripts/startup/bl_ui/properties_material.py
index 9aed338bad4..2dc7bffa527 100644
--- a/release/scripts/startup/bl_ui/properties_material.py
+++ b/release/scripts/startup/bl_ui/properties_material.py
@@ -148,7 +148,7 @@ class MATERIAL_PT_context_material(MaterialButtonsPanel, Panel):
                 col.operator("object.material_slot_move", icon='TRIA_UP', text="").direction = 'UP'
                 col.operator("object.material_slot_move", icon='TRIA_DOWN', text="").direction = 'DOWN'
 
-            if ob.mode == 'EDIT':
+            if context.workspace.object_mode == 'EDIT':
                 row = layout.row(align=True)
                 row.operator("object.material_slot_assign", text="Assign")
                 row.operator("object.material_slot_select", text="Select")
@@ -1094,7 +1094,7 @@ class EEVEE_MATERIAL_PT_context_material(MaterialButtonsPanel, Panel):
                 col.operator("object.material_slot_move", icon='TRIA_UP', text="").direction = 'UP'
                 col.operator("object.material_slot_move", icon='TRIA_DOWN', text="").direction = 'DOWN'
 
-            if ob.mode == 'EDIT':
+            if context.workspace.object_mode == 'EDIT':
                 row = layout.row(align=True)
                 row.operator("object.material_slot_assign", text="Assign")
                 row.operator("object.material_slot_select", text="Select")
diff --git a/release/scripts/startup/bl_ui/space_image.py b/release/scripts/startup/bl_ui/space_image.py
index 123e95c013c..14ecb86e577 100644
--- a/release/scripts/startup/bl_ui/space_image.py
+++ b/release/scripts/startup/bl_ui/space_image.py
@@ -1208,7 +1208,8 @@ class ImageScopesPanel:
         if sima.mode == 'PAINT':
             return False
         ob = context.active_object
-        if ob and ob.mode in {'TEXTURE_PAINT', 'EDIT'}:
+        workspace = context.workspace
+        if ob and workspace.object_mode in {'TEXTURE_PAINT', 'EDIT'}:
             return False
         return True
 
diff --git a/release/scripts/startup/bl_ui/space_info.py b/release/scripts/startup/bl_ui/space_info.py
index f032f6a899b..8c69e733a2d 100644
--- a/release/scripts/startup/bl_ui/space_info.py
+++ b/release/scripts/startup/bl_ui/space_info.py
@@ -48,10 +48,7 @@ class INFO_HT_header(Header):
             layout.template_ID(window, "workspace", new="workspace.workspace_add_menu", unlink="workspace.workspace_delete")
             layout.template_search_preview(window, "screen", workspace, "screens", new="screen.new", unlink="screen.delete", rows=2, cols=6)
 
-        if hasattr(window, 'object_mode'):
-            act_mode_item = bpy.types.Object.bl_rna.properties['mode'].enum_items[window.object_mode]
-        else:
-            act_mode_item = bpy.types.Object.bl_rna.properties['mode'].enum_items[layer.objects.active.mode]
+        act_mode_item = bpy.types.WorkSpace.bl_rna.properties['object_mode'].enum_items[workspace.object_mode]
         layout.operator_menu_enum("object.mode_set", "mode", text=act_mode_item.name, icon=act_mode_item.icon)
 
         row = layout.row()
@@ -87,7 +84,7 @@ class INFO_HT_header(Header):
             return
 
         row.operator("wm.splash", text="", icon='BLENDER', emboss=False)
-        row.label(text=scene.statistics(context.view_layer), translate=False)
+        row.label(text=scene.statistics(workspace, context.view_layer), translate=False)
 
 
 class INFO_MT_editor_menus(Menu):
diff --git a/release/scripts/startup/bl_ui/space_view3d.py b/release/scripts/startup/bl_ui/space_view3d.py
index 9fd620eec76..a4c452857f2 100644
--- a/release/scripts/startup/bl_ui/space_view3d.py
+++ b/release/scripts/startup/bl_ui/space_view3d.py
@@ -48,7 +48,7 @@ class VIEW3D_HT_header(Header):
         layout.template_header_3D()
 
         if obj:
-            mode = obj.mode
+            mode = context.workspace.object_mode
             # Particle edit
             if mode == 'PARTICLE_EDIT':
                 row.prop(toolsettings.particle_edit, "select_mode", text="", expand=True)
@@ -317,8 +317,9 @@ class VIEW3D_MT_transform_armature(VIEW3D_MT_transform_base):
         VIEW3D_MT_transform_base.draw(self, context)
 
         # armature specific extensions follow...
+        workspace = context.workspace
         obj = context.object
-        if obj.type == 'ARMATURE' and obj.mode in {'EDIT', 'POSE'}:
+        if obj.type == 'ARMATURE' and workspace.object_mode in {'EDIT', 'POSE'}:
             if obj.data.draw_type == 'BBONE':
                 layout.separator()
 
@@ -1955,7 +1956,10 @@ class VIEW3D_MT_vertex_group(Menu):
         layout.operator("object.vertex_group_assign_new")
 
         ob = context.active_object
-        if ob.mode == 'EDIT' or (ob.mode == 'WEIGHT_PAINT' and ob.type == 'MESH' and ob.data.use_paint_mask_vertex):
+        workspace = context.workspace
+        if ((workspace.object_mode == 'EDIT') or
+            (workspace.object_mode == 'WEIGHT_PAINT' and ob.type == 'MESH' and ob.data.use_paint_mask_vertex)
+        ):
             if ob.vertex_groups.active:
                 layout.separator()
 
@@ -3388,7 +3392,7 @@ class VIEW3D_PT_view3d_properties(Panel):
         if lock_object:
             if lock_object.type == 'ARMATURE':
                 col.prop_search(view, "lock_bone", lock_object.data,
-                                "edit_bones" if lock_object.mode == 'EDIT'
+                                "edit_bones" if context.mode == 'EDIT_ARMATURE'
                                 else "bones",
                                 text="")
         else:
@@ -3441,12 +3445,13 @@ class VIEW3D_PT_view3d_name(Panel):
     def draw(self, context):
         layout = self.layout
 
+        workspace = context.workspace
         ob = context.active_object
         row = layout.row()
         row.label(text="", icon='OBJECT_DATA')
         row.prop(ob, "name", text="")
 
-        if ob.type == 'ARMATURE' and ob.mode in {'EDIT', 'POSE'}:
+        if ob.type == 'ARMATURE' and workspace.object_mode in {'EDIT', 'POSE'}:
             bone = context.active_bone
             if bone:
                 row = layout.row()
@@ -3764,7 +3769,8 @@ class VIEW3D_PT_etch_a_ton(Panel):
     def poll(cls, context):
         scene = context.space_data
         ob = context.active_object
-        return scene and ob and ob.type == 'ARMATURE' and ob.mode == 'EDIT'
+        workspace = context.workspace
+        return scene and ob and (ob.type == 'ARMATURE') and (workspace.object_mode == 'EDIT')
 
     def draw_header(self, context):
         layout = self.layout
@@ -3820,7 +3826,8 @@ class VIEW3D_PT_context_properties(Panel):
     def _active_context_member(context):
         obj = context.object
         if obj:
-            mode = obj.mode
+            workspace = context.workspace
+            mode = workspace.object_mode
             if mode == 'POSE':
                 return "active_pose_bone"
             elif mode == 'EDIT' and obj.type == 'ARMATURE':
diff --git a/release/scripts/startup/bl_ui/space_view3d_toolbar.py b/release/scripts/startup/bl_ui/space_view3d_toolbar.py
index e29971e1835..7a3b0f26edc 100644
--- a/release/scripts/startup/bl_ui/space_view3d_toolbar.py
+++ b/release/scripts/startup/bl_ui/space_view3d_toolbar.py
@@ -2051,7 +2051,7 @@ class VIEW3D_PT_tools_history(View3DPanel, Panel):
         row = col.row(align=True)
         row.operator("ed.undo")
         row.operator("ed.redo")
-        if obj is None or obj.mode != 'SCULPT':
+        if obj is None or workspace.object_mode != 'SCULPT':
             # Sculpt mode does not generate an undo menu it seems...
             col.operator("ed.undo_history")
 
diff --git a/release/scripts/startup/keyingsets_builtins.py b/release/scripts/startup/keyingsets_builtins.py
index 390c043bb31..0a6ece6eb5a 100644
--- a/release/scripts/startup/keyingsets_builtins.py
+++ b/release/scripts/startup/keyingsets_builtins.py
@@ -388,8 +388,9 @@ class BUILTIN_KSI_WholeCharacter(KeyingSetInfo):
 
     # poll - pose-mode on active object only
     def poll(ksi, context):
-        return ((context.active_object) and (context.active_object.pose) and
-                (context.active_object.mode == 'POSE'))
+        workspace = context.workspace
+        ob = context.active_object
+        return (ob and ob.pose and (workspace.object_mode == 'POSE'))
 
     # iterator - all bones regardless of selection
     def iterator(ksi, context, ks):