Method: GRID_HAS_CHANGED
Method: HANDLE_SWITCH_TO_TREE_DISPLAY
Method: HANDLE_GRID_NAVIGATION
Method: SET_OBJECT_TYPE_GROUP
Method: CONSTRUCTOR
Method: UPDATE_DISPLAY
Method: FREE
Method: HANDLE_TREE_NAVIGATION
Method: UPDATE_REFERENCE
Method: HANDLE_SWITCH_TO_GRID_DISPLAY
Method: DISPLAY_MODE_IS_GRID