protected void checkSubclass() {}
protected void initInternalListener() {
this.modeSupport = new ModeSupport(this);
this.modeSupport.registerModeEventHandler(Mode.NORMAL_MODE,
new ConfigurableModeEventHandler(this.modeSupport, this));
this.modeSupport.switchMode(Mode.NORMAL_MODE);
addPaintListener(this);
addFocusListener(new FocusListener() {