node_wrangler.py

    (NWLinkToOutputNode.bl_idname, 'O', 'PRESS', False, False, False, None, "Link to output node"),
    # SELECT PARENT/CHILDREN
    # Select Children
    (NWSelectParentChildren.bl_idname, 'RIGHT_BRACKET', 'PRESS', False, False, False, (('option', 'CHILD'),), "Select children"),
    # Select Parent
    (NWSelectParentChildren.bl_idname, 'LEFT_BRACKET', 'PRESS', False, False, False, (('option', 'PARENT'),), "Select Parent"),
    # Add Texture Setup
    (NWAddTextureSetup.bl_idname, 'T', 'PRESS', True, False, False, None, "Add texture setup"),
    # Reset backdrop
    (NWResetBG.bl_idname, 'Z', 'PRESS', False, False, False, None, "Reset backdrop image zoom"),
    # Delete unused
    (NWDeleteUnused.bl_idname, 'X', 'PRESS', False, False, True, None, "Delete unused nodes"),
    # Frame Seleted
    (NWFrameSelected.bl_idname, 'P', 'PRESS', False, True, False, None, "Frame selected nodes"),
    # Swap Outputs
    (NWSwapLinks.bl_idname, 'S', 'PRESS', False, False, True, None, "Swap Outputs"),
    # Emission Viewer
    (NWEmissionViewer.bl_idname, 'LEFTMOUSE', 'PRESS', True, True, False, None, "Connect to Cycles Viewer node"),
    # Reload Images
    (NWReloadImages.bl_idname, 'R', 'PRESS', False, False, True, None, "Reload images"),
    # Lazy Mix
    (NWLazyMix.bl_idname, 'RIGHTMOUSE', 'PRESS', False, False, True, None, "Lazy Mix"),
    # Lazy Connect
    (NWLazyConnect.bl_idname, 'RIGHTMOUSE', 'PRESS', True, False, False, None, "Lazy Connect"),
    # Lazy Connect with Menu
    (NWLazyConnect.bl_idname, 'RIGHTMOUSE', 'PRESS', True, True, False, (('with_menu', True),), "Lazy Connect with Socket Menu"),
    # Viewer Tile Center
    (NWViewerFocus.bl_idname, 'LEFTMOUSE', 'DOUBLE_CLICK', False, False, False, None, "Set Viewers Tile Center"),
    # Align Nodes
    (NWAlignNodes.bl_idname, 'EQUAL', 'PRESS', False, True, False, None, "Align selected nodes neatly in a row/column"),
    # MENUS
    ('wm.call_menu', 'SPACE', 'PRESS', True, False, False, (('name', NodeWranglerMenu.bl_idname),), "Node Wranger menu"),
    ('wm.call_menu', 'SLASH', 'PRESS', False, False, False, (('name', NWAddReroutesMenu.bl_idname),), "Add Reroutes menu"),
    ('wm.call_menu', 'NUMPAD_SLASH', 'PRESS', False, False, False, (('name', NWAddReroutesMenu.bl_idname),), "Add Reroutes menu"),
    ('wm.call_menu', 'BACK_SLASH', 'PRESS', False, False, False, (('name', NWLinkActiveToSelectedMenu.bl_idname),), "Link active to selected (menu)"),
    ('wm.call_menu', 'C', 'PRESS', False, True, False, (('name', NWCopyToSelectedMenu.bl_idname),), "Copy to selected (menu)"),
    ('wm.call_menu', 'S', 'PRESS', False, True, False, (('name', NWSwitchNodeTypeMenu.bl_idname),), "Switch node type menu"),
)


def register():
    # props
    bpy.types.Scene.NWBusyDrawing = StringProperty(
        name="Busy Drawing!",
        default="",
        description="An internal property used to store only the first mouse position")
    bpy.types.Scene.NWLazySource = StringProperty(
        name="Lazy Source!",
        default="x",
        description="An internal property used to store the first node in a Lazy Connect operation")
    bpy.types.Scene.NWLazyTarget = StringProperty(
        name="Lazy Target!",
        default="x",
        description="An internal property used to store the last node in a Lazy Connect operation")
    bpy.types.Scene.NWSourceSocket = IntProperty(
        name="Source Socket!",
        default=0,
        description="An internal property used to store the source socket in a Lazy Connect operation")

    bpy.utils.register_module(__name__)

    # keymaps
    addon_keymaps.clear()
    kc = bpy.context.window_manager.keyconfigs.addon
    if kc:
        km = kc.keymaps.new(name='Node Editor', space_type="NODE_EDITOR")
        for (identifier, key, action, CTRL, SHIFT, ALT, props, nicename) in kmi_defs:
            kmi = km.keymap_items.new(identifier, key, action, ctrl=CTRL, shift=SHIFT, alt=ALT)
            if props:
                for prop, value in props:
                    setattr(kmi.properties, prop, value)
            addon_keymaps.append((km, kmi))

    # menu items
    bpy.types.NODE_MT_select.append(select_parent_children_buttons)
    bpy.types.NODE_MT_category_SH_NEW_INPUT.prepend(attr_nodes_menu_func)
    bpy.types.NODE_PT_category_SH_NEW_INPUT.prepend(attr_nodes_menu_func)
    bpy.types.NODE_PT_backdrop.append(bgreset_menu_func)
    bpy.types.NODE_MT_category_SH_NEW_TEXTURE.prepend(multipleimages_menu_func)
    bpy.types.NODE_PT_category_SH_NEW_TEXTURE.prepend(multipleimages_menu_func)
    bpy.types.NODE_MT_category_CMP_INPUT.prepend(multipleimages_menu_func)
    bpy.types.NODE_PT_category_CMP_INPUT.prepend(multipleimages_menu_func)


def unregister():
    # props
    del bpy.types.Scene.NWBusyDrawing
    del bpy.types.Scene.NWLazySource
    del bpy.types.Scene.NWLazyTarget
    del bpy.types.Scene.NWSourceSocket

    # keymaps
    for km, kmi in addon_keymaps:
        km.keymap_items.remove(kmi)
    addon_keymaps.clear()

    # menuitems
    bpy.types.NODE_MT_select.remove(select_parent_children_buttons)
    bpy.types.NODE_MT_category_SH_NEW_INPUT.remove(attr_nodes_menu_func)
    bpy.types.NODE_PT_category_SH_NEW_INPUT.remove(attr_nodes_menu_func)
    bpy.types.NODE_PT_backdrop.remove(bgreset_menu_func)
    bpy.types.NODE_MT_category_SH_NEW_TEXTURE.remove(multipleimages_menu_func)
    bpy.types.NODE_PT_category_SH_NEW_TEXTURE.remove(multipleimages_menu_func)
    bpy.types.NODE_MT_category_CMP_INPUT.remove(multipleimages_menu_func)
    bpy.types.NODE_PT_category_CMP_INPUT.remove(multipleimages_menu_func)

    bpy.utils.unregister_module(__name__)

if __name__ == "__main__":
    register()