Method: SET_UNDO_BUTTON_STATE
Method: CREATE_TOOLBAR
Method: HANDLE_TOOLBAR_FUNCTIONS
Method: IF_OO_REFACTORING_DISPLAY~DISPLAY
Method: INIT_DRAG_DROP
Method: ON_CLOSE
Method: REFRESH_TREE
Method: REFRESH_STATUS_DISPLAY
Method: IF_OO_REFACTORING_DISPLAY~CLOSE
Method: HANDLE_ON_DROP
Method: CONSTRUCTOR
Method: CREATE_NODE_TABLE