想象一下有一个定义鼠标模式的枚举:publicenumMouseMode{SELECTION,EDITING,DELETING}想象一下有一个由3个按钮组成的切换组:ToggleButtonselection=newToggleButton("Select");ToggleButtonediting=newToggleButton("Edit");ToggleButtondeleting=newToggleButton("Delete");ToggleGroupmouseSelection=newToggleGroup();我想要一个字段MouseModecurrentMode双向链接