javafx，如何实现confirmHandler？

我正在使用javafx的webengine来显示网页。在页面上，有脚本调用window.confirm。我已经知道如何设置确认处理程序以及如何显示类似模态的对话框

我的问题是如何在处理程序返回之前获得用户的选择

webEngine.setConfirmHandler(new Callback<String, Boolean>() {
@Override
public Boolean call(String message) {
// Show the dialog
...
return true; // How can I get user's choice here?
}
});

webEngine.setConfirmHandler（新回调（）{
@凌驾
公共布尔调用（字符串消息）{
//显示对话框
...
return true；//如何在此处获得用户的选择？
}
});

如中所述，我们可以使用JavaFX2.2中提供的新方法showAndWait来实现这一点

舞台类：

/** 
 * Show the stage and wait for it to be closed before returning to the 
 * caller. This must be called on the FX Application thread. The stage 
 * must not already be visible prior to calling this method. This must not 
 * be called on the primary stage. 
 * 
 * @throws IllegalStateException if this method is called on a thread 
 * other than the JavaFX Application Thread. 
 * @throws IllegalStateException if this method is called on the 
 * primary stage. 
 * @throws IllegalStateException if this stage is already showing. 
 */ 
public void showAndWait();

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@jewelsea在上创建了一个样本。谢谢

嗯。阻塞将在2.2中提供。必须等待…为什么不把你的答案放在评论中，并将其标记为已接受的答案？@jschoen，因为2.2尚未发布。但我会在回答中写下我的发现。