调整窗口大小时收到通知的正确方法是什么？

Question

我有一个应用程序，将多个 Windows 放置在 com.extjs.gxt.desktop.client.Desktop 中。我需要附加一个侦听器，它在调整大小时记录每个窗口的大小。我看到两个问题：

1. 虽然调整窗口大小时会触发移动事件，但它们似乎是在新大小实际应用于窗口之前触发的，因此我无法直接从窗​​口请求新大小。< /p>

2. 无论窗口的实际大小如何，我在侦听器中收到的 WindowEvent 包含的大小为 0x0。

我在这里缺少什么吗？

这是我的附加代码：

protected void addWindowListeners( Window w,
        String uid, WindowData windowData )
{
    WindowChangeListener l = new WindowChangeListener( uid, windowData );
    w.addWindowListener( l );
    // Add this again since the default WindowListener doesn't support the Move event.
    w.addListener( Events.Move, l );
}

和侦听器类：

protected class WindowChangeListener 
    extends WindowListener
    implements Listener<WindowEvent>
{

    @Override
    public void windowHide( WindowEvent we )
    {
        updateWindowData( we );
    }

    @Override
    public void windowShow( WindowEvent we )
    {
        updateWindowData( we );
    }

    public void windowMove( WindowEvent we )
    {
        updateWindowData( we );
    }

    protected void updateWindowData( WindowEvent we )
    {
        // Here's the part that needs to get notified with the new size.
    }

    @Override
    public void handleEvent( WindowEvent we )
    {
        if( we.getType() == Events.Move )
            windowMove( we );
        else
            super.handleEvent( we );
    }
}

感谢任何人的见解。我觉得我必须错过一些简单的东西。

Answer 1

事实上，我在 Sencha 论坛上获得了魔法：http://www.sencha.com/forum/showthread.php?121249-What-s-the- right-way-to-be-notified-when-a-Window-is-resized&p=561340&posted=1#post561340

结果我可以监听 Window 上的调整大小事件：

protected void addWindowListeners( Window w,
        String uid, WindowData windowData )
{
    w.addListener( Events.Resize, new Listener<WindowEvent>() {

        @Override
        public void handleEvent( WindowEvent we )
        {
            System.out.println( "Resize event: " + we );
            System.out.println( "   Size in event: " + we.getWidth() + "x" + we.getHeight() );
            System.out.println( "   Size of window: " + we.getWindow().getSize() );
        }

    });
}