[Bf-blender-cvs] [3d60d221e42] greasepencil-object: Fix warning when select a object not GP

[Antonio Vazquez]

Commit: 3d60d221e4251b0dad1bdb74f576bfa1c1385147
Author: Antonio Vazquez
Date:   Tue May 8 15:32:58 2018 +0200
Branches: greasepencil-object
https://developer.blender.org/rB3d60d221e4251b0dad1bdb74f576bfa1c1385147

Fix warning when select a object  not GP

The onion skin panel needs a grease pencil layer.

===================================================================

M	release/scripts/startup/bl_ui/properties_data_gpencil.py

===================================================================

diff --git a/release/scripts/startup/bl_ui/properties_data_gpencil.py b/release/scripts/startup/bl_ui/properties_data_gpencil.py
index 7f07b87a80a..5069197334d 100644
--- a/release/scripts/startup/bl_ui/properties_data_gpencil.py
+++ b/release/scripts/startup/bl_ui/properties_data_gpencil.py
@@ -119,6 +119,10 @@ class DATA_PT_gpencil_onionpanel(Panel):
     bl_label = "Onion Skinning"
     bl_options = {'DEFAULT_CLOSED'}
 
+    @classmethod
+    def poll(cls, context):
+        return bool(context.active_gpencil_layer)
+
     @staticmethod
     def draw_header(self, context):
         self.layout.prop(context.gpencil_data, "use_onion_skinning", text="")