poll() as a python '@staticmethod' was too limiting and didnt allow useful base class poll functions in many cases.

now rna functions that dont have a 'self' are automatically assumed '@classmethods'.

de-duplicated poll functions and made some minor tweaks too.

release/scripts/ui/properties_physics_cloth.py

@@ -43,8 +43,8 @@ class PhysicButtonsPanel():
     bl_region_type = 'WINDOW'
     bl_context = "physics"
 
-    @staticmethod
-    def poll(context):
+    @classmethod
+    def poll(cls, context):
         ob = context.object
         rd = context.scene.render
         return (ob and ob.type == 'MESH') and (not rd.use_game_engine)
@@ -133,8 +133,8 @@ class PHYSICS_PT_cloth_cache(PhysicButtonsPanel, bpy.types.Panel):
     bl_label = "Cloth Cache"
     bl_default_closed = True
 
-    @staticmethod
-    def poll(context):
+    @classmethod
+    def poll(cls, context):
         return context.cloth
 
     def draw(self, context):
@@ -146,8 +146,8 @@ class PHYSICS_PT_cloth_collision(PhysicButtonsPanel, bpy.types.Panel):
     bl_label = "Cloth Collision"
     bl_default_closed = True
 
-    @staticmethod
-    def poll(context):
+    @classmethod
+    def poll(cls, context):
         return context.cloth
 
     def draw_header(self, context):
@@ -185,8 +185,8 @@ class PHYSICS_PT_cloth_stiffness(PhysicButtonsPanel, bpy.types.Panel):
     bl_label = "Cloth Stiffness Scaling"
     bl_default_closed = True
 
-    @staticmethod
-    def poll(context):
+    @classmethod
+    def poll(cls, context):
         return context.cloth
 
     def draw_header(self, context):
@@ -221,8 +221,8 @@ class PHYSICS_PT_cloth_field_weights(PhysicButtonsPanel, bpy.types.Panel):
     bl_label = "Cloth Field Weights"
     bl_default_closed = True
 
-    @staticmethod
-    def poll(context):
+    @classmethod
+    def poll(cls, context):
         return (context.cloth)
 
     def draw(self, context):