[Bf-taskforce25] bpy and metaballs

[Jiří Hnídek]

Hi,
I would like to add panels for metaballs to button window, but I have  
some poblems. I added Python script buttons_data_metaball.py to  
release/ui/ directory:

import bpy

class DataButtonsPanel(bpy.types.Panel):
	__space_type__ = "BUTTONS_WINDOW"
	__region_type__ = "WINDOW"
	__context__ = "data"
	
	def poll(self, context):
		# metaball or mball or something else?
		return (context.metaball != None)

class DATA_PT_context_metaball(DataButtonsPanel):
	__idname__ = "DATA_PT_context_metaball"
	__show_header__ = False
	
	def draw(self, context):
		layout = self.layout
		
		ob = context.object
		mball = context.metaball
		space = context.space_data

		split = layout.split(percentage=0.65)

		if ob:
			split.template_ID(ob, "data")
			split.itemS()
		elif mball:
			split.template_ID(space, "pin_id")
			split.itemS()

class DATA_PT_metaball(DataButtonsPanel):
	__idname__ = "DATA_PT_metaball"
	__label__ = "Metaball"

	def draw(self, context):
		layout = self.layout

bpy.types.register(DATA_PT_context_metaball)
bpy.types.register(DATA_PT_metaball)

Script is automagicaly executed, when metaball object is selected, but  
it doesn't show anything. I guess, that there is some problem with  
creating context for metaball. Can anybody help me?

Thanks,

Jiri