当浏览器/选项卡获得焦点时将焦点恢复到 Java Applet [英] Restore focus to Java Applet when Browser/Tab gains focus
问题描述
我在浏览器选项卡中运行了一个小程序.当我在同一个浏览器中切换到不同的选项卡，或 ALT-TAB 完全切换到另一个应用程序时，小程序会失去焦点.当我返回浏览器选项卡时，小程序不再获得焦点.有什么好的方法可以做到这一点吗?
I have an applet running in a browser tab. When I switch to a different tab in the same browser, or ALT-TAB to another application entirely, the applet loses focus. When I return to the browser tab, the applet doesn't gain focus again. Is there a nice way to make this happen?
我认为这是需要的 JavaScript 更改，而不是小程序本身?也许是一些 onFocus 处理程序?如果相关，我们的小程序是使用 HTML 标签创建的.
I assume it's a JavaScript change that's needed, not in the applet itself? Some onFocus handler perhaps? If it's relevant, our applet is created using an HTML <applet> tag.
推荐答案
我相信 java 有 requestFocus() 方法.它在 Component 类中，因此您的 JPanel 或您使用的任何东西都可以使用它.
I believe java has the requestFocus() method. It's in the Component class, so your JPanel or whatever you are using may be able to use this.
对于 javascript 部分，这是一个快速的谷歌搜索显示:http://www.raditha.com/java/javascript.php.希望能帮到你！
For the javascript part, this is what a quick googling reveals: http://www.raditha.com/java/javascript.php. I hope it helps you!
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