我注意到当我选择树节点时,如果单击空格,则会打开所选节点...我该如何删除此事件?
答案 0 :(得分:1)
看起来没有办法防止这个事件,如果有一个我不确定它是明智的,因为Tree的keyDownHandler比打开节点做的多一点。
我通过创建自定义树来解决它。遗憾的是,我不得不从Tree的keyDownHandler中复制几行代码。
public class MyTree extends Tree
{
override protected function keyDownHandler(event:KeyboardEvent):void
{
if (event.keyCode == Keyboard.SPACE)
{
// Code copied from Tree's keyDownHandler
// if user has moved the caret cursor from the selected item
// move the cursor back to selected item
if (caretIndex != selectedIndex)
{
// erase the caret
var renderer:IListItemRenderer = indexToItemRenderer(caretIndex);
if (renderer)
drawItem(renderer);
caretIndex = selectedIndex;
}
event.stopImmediatePropagation();
}
else
{
super.keyDownHandler(event);
}
}
}