关于java：双击JavaFX 2.2时禁用TreeItem的默认展开/折叠

Disable TreeItem's default expand/collapse on double click JavaFX 2.2

我正在开发一个JavaFX2.2项目，我想在树项上设置鼠标(双击)事件的自定义处理。使用treeview.setonmouseclicked，我可以毫无错误地启动代码，但问题是，在每次鼠标双击时，treeitem都在展开和折叠之间切换。我认为这是默认行为，但我如何禁用它？？

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我也遇到了同样的问题，并使用EventDispatcher及时解决了它。

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class TreeMouseEventDispatcher implements EventDispatcher {
private final EventDispatcher originalDispatcher;

public TreeMouseEventDispatcher(EventDispatcher originalDispatcher) {
this.originalDispatcher = originalDispatcher;
}

@Override
public Event dispatchEvent(Event event, EventDispatchChain tail) {
if (event instanceof MouseEvent) {
if (((MouseEvent) event).getButton() == MouseButton.PRIMARY
&& ((MouseEvent) event).getClickCount() >= 2) {

if (!event.isConsumed()) {
// Implement your double-click behavior here, even your
// MouseEvent handlers will be ignored, i.e., the event consumed!
}

event.consume();
}
}
return originalDispatcher.dispatchEvent(event, tail);
}
}

然后用这个TreeMouseEventDispatcher来表示TreeCell：

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treeView.setCellFactory(new Callback<TreeView<T>, TreeCell<T>>() {
@Override
public TreeCell<T> call(TreeView<T> param) {
return new TreeCell<T>() {
@Override
protected void updateItem(T item, boolean empty) {
if (item != null && !empty) {
EventDispatcher originalDispatcher = getEventDispatcher();
setEventDispatcher(new TreeMouseEventDispatcher(originalDispatcher));
}
}
};
}
}