Scala Swing ListView的删除/添加元素事件

有权利去做吗？有一个更好的方法吗？请指教.

谢谢

**借用和修改的代码**

object ListViewTest extends SimpleSwingApplication
{
  lazy val top = new MainFrame
  {
    title = "ListView Test"
    contents = new BoxPanel(Orientation.Vertical)
    {
      border = Swing.EmptyBorder(2,2,2)

      val listModel = new DefaultListModel
      List("First","Second","Third","Fourth","Fifth").map(listModel.addElement(_))
      val myList = ListBuffer()
      val listView = new ListView[String](myList)
      {
        selection.intervalMode = ListView.IntervalMode.Single
        peer.setModel(listModel)

        //listData = myList

      }
      listView.peer.getModel.addListDataListener(new ListDataListener {
        def contentsChanged(e: ListDataEvent) { publish(ListChanged(listView)) }
        def intervalRemoved(e: ListDataEvent) { publish(ListElementsRemoved(listView,e.getIndex0 to e.getIndex1)) }
        def intervalAdded(e: ListDataEvent) { publish(ListElementsAdded(listView,e.getIndex0 to e.getIndex1)) }
      })

      contents += new ScrollPane(listView)

      val label = new Label("No selection")
      contents += label

      val b = new Button("Remove")
      contents += b

      listenTo(listView.selection,listView,b)
      reactions +=
        {
          case ListSelectionChanged(list,range,live) =>
            label.text = "Selection: " + range
          case e: ButtonClicked =>
            if (listView.listData.isEmpty)
            {
              b.enabled = false
            }
            else
            {
              listView.peer.getModel.asInstanceOf[DefaultListModel].remove(listView.selection.anchorIndex)
            }

          case ListElementsRemoved(source,range) =>
            println("Element at " + (range.start + 1) + " is removed.")
        }
    }
    pack
  }