JDK7 和原生组件的焦点问题-Java问题

Focus problems with JDK7 and native components(JDK7 和原生组件的焦点问题)

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问题描述

我们有一个 swing 应用程序，它通过 JNIWrapper 嵌入了一个 IE ocx 组件.

We have a swing application which embeds a IE ocx component via JNIWrapper.

从 jdk6 切换到 jdk7 后，我们开始注意到焦点问题.当嵌入式 IE 显示带有文本字段的网页(例如 google 搜索页面)时，麻烦就开始了:

After switching from jdk6 to jdk7 we start noticing focus problems. When the embedded IE shows a web page with text fields (e.g. the google search page) than the trouble starts:

浏览器抓住"焦点，因此您可以开始在搜索文本字段中输入内容.键入的每个键都会进入 IE ocx.但是swing似乎忽略了这个焦点变化.即使我将焦点更改为 swing 文本字段(并且 swing 显示闪烁的输入光标)，所有键入的键都会转到 IE ocx

The Browser 'catches' the focus, so u can start typing in the search text field. Every key typed goes to the IE ocx. But swing seems to ignore this focus change. Even if i change the focus to a swing text field (and swing shows the blinking input cursor), all typed keys goes to the IE ocx

修复"焦点的唯一方法是停用并激活主框架.之后，焦点似乎是一致的.但是如果我再次点击谷歌搜索文本字段，焦点又会被打破.

The only way to 'fix' the focus is to deacitvate and activate the main frame. after that the focus seems to be consistent. But if i click in the google search text field again, the focus is broken again.

jdk7 中的焦点处理似乎有很大的变化.来自链接:

It seems there is a big change to focus handling in jdk7. From the link:

在 Windows 平台上，实现了综合焦点"的概念.这意味着焦点所有者组件仅模拟其可聚焦状态，而真正的本机焦点设置为焦点代理"组件.该组件接收键和输入法本机消息并将它们分派给焦点所有者.在 JDK7 之前，焦点代理组件是框架/对话框内的专用隐藏子组件.在 JDK7 中，框架/对话框本身充当焦点代理.现在它代理的焦点不仅是拥有窗口中的组件，还包括所有子组件.一个简单的窗口从不接收本机焦点并依赖于其所有者的焦点代理.这种机制对用户来说是透明的，但在调试时应加以考虑.

On the Windows platform, a concept of "synthetic focus" has been implemented. It means that a focus owner component only emulates its focusable state whereas real native focus is set to a "focus proxy" component. This component receives key and input method native messages and dispatches them to a focus owner. Prior to JDK7 a focus proxy component was a dedicated hidden child component inside a frame/dialog. In JDK7 a frame/dialog itself serves as a focus proxy. Now it proxies focus not only for components in an owned window but for all child components as well. A simple window never receives native focus and relies on focus proxy of its owner. This mechanism is transparent for a user but should be taken into account when debugging.

任何人都有修复"行为的想法?

Anyone has an idea to 'fix' the behavior?

编辑:这里有一些代码可以用 JxBrowser

EDIT: Here some code to reproduce the problem with JxBrowser

    public static void main(String[] args) {
    Browser browser = BrowserFactory.createBrowser(BrowserType.IE);

    JFrame frame = new JFrame();
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.getContentPane().add(browser.getComponent(), BorderLayout.CENTER);

    JPanel panel = new JPanel();
    frame.getContentPane().add(panel, BorderLayout.NORTH);

    textField = new JTextField();
    panel.add(textField);
    textField.setColumns(10);
    frame.setSize(700, 500);
    frame.setLocationRelativeTo(null);
    frame.setVisible(true);

    browser.navigate("http://www.google.com");
}

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