| 名称 | 所实现的listener |
| DefaultDrawing | FigureListener, UndoableEditListener |
| DefaultDrawingEditor | ToolListener |
| DefaultDrawingView | DrawingListener, HandleListener, EditableComponent |
| Handle | View.OnKeyListener |
| AbstractHandle | FigureListener |
| Tool | MouseListener, MouseMotionListener, KeyListener |
| SelectionTool | ToolListener |
| ConnectionTool | FigureListener |
上表所列还不完全，随着我对JHotDraw框架的学习进一步补充。