GWT中的助记符 [英] Mnemonics in GWT

问题描述

我想创建 Java Swing助记符与GWT。但我不知道如何弄清楚。我用Google搜索了一下，但我并没有喜欢它的任何示例代码。我想在我的按钮上绑定一些键盘快捷键。我怎样才能实现它？任何建议将非常感谢！

I would like to create as Java Swing Mnemonics with GWT . But I don't know how to figure it out. I have googled for it but I didn't fond any sample codes for it . I want to bind some keyboard shortcut keys on my buttons. How can I achieve it ? Any suggestions would be really appreciated !

推荐答案

一般来说，您可以使用NativePreviewHandler处理全局键盘快捷键。一个例子可以在这里看到：

In general you can handle global keyboard shortcusts using a NativePreviewHandler. An example of this can you see here:

NativePreviewHandler nativePreviewHandler = new NativePreviewHandler() {

    @Override
    public void onPreviewNativeEvent(NativePreviewEvent event) {
        if (event.getTypeInt() != Event.ONKEYDOWN) {
            return;
        }
        final NativeEvent nativeEvent = event.getNativeEvent();
        final boolean altKey = nativeEvent.getAltKey();
        final boolean ctrlKey = nativeEvent.getCtrlKey();
        if(altKey && ctrlKey && nativeEvent.getKeyCode() == 'A') {
            // Do Something
        }
    }
};
Event.addNativePreviewHandler(nativePreviewHandler);

但是据我所知，GWT中没有通用的方式来处理某种Action绑定到按钮/菜单以及键盘快捷键。你必须自己实现这样的抽象。

But as far as I klnow, there's no generic way build into GWT to handle some kind of Action that is bound to a button/Menu as well as a keyboard shortcut. You will have to implement such an abstraction by yourselves.

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