MultiPanels.py

# made in response to
# http://blender.stackexchange.com/q/44052/935

bl_info = {
    "version": (1, 0),
    "blender": (2, 75, 0),
    "name": "Multi panels",
    "description": """create multiple panels that share code""" ,
    "category": "test",
}

import bpy

class MyBasePanel(bpy.types.Panel):
    """A Panel to show in many places"""
    bl_label = "My Tools Panel"
    bl_region_type = 'TOOLS'

    def mydraw(self, context):
        # do nothing here so each class can add it's own thing'
        pass

    def draw(self, context):
        self.mydraw(context)
        row = self.layout.row()
        row.label(text="Hello world!", icon='WORLD_DATA')

class My3DViewPanel(MyBasePanel):
    bl_space_type = 'VIEW_3D'

class MyNodesPanel(MyBasePanel):
    bl_label = "My Nodes Panel"
    bl_space_type = 'NODE_EDITOR'

class MyImagePanel(MyBasePanel):
    bl_space_type = 'IMAGE_EDITOR'

    def mydraw(self, context):
        row = self.layout.row()
        row.label('For the Image editor')

def register():
    bpy.utils.register_class(My3DViewPanel)
    bpy.utils.register_class(MyNodesPanel)
    bpy.utils.register_class(MyImagePanel)

def unregister():
    bpy.utils.unregister_class(My3DViewPanel)
    bpy.utils.unregister_class(MyNodesPanel)
    bpy.utils.unregister_class(MyImagePanel)

if __name__ == "__main__":
    register()

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