JavaFX WebEngine 中的 HyperlinkListener [英] HyperlinkListener in JavaFX WebEngine

问题描述

过去我使用 JEditorPane，现在我正在努力使用 JavaFX WebEngine.如何为显示页面上包含超链接的事件(如链接选择或点击链接)注册侦听器?

In the past I used JEditorPane and now I'm trying my best with JavaFX WebEngine. How can I register listeners for events containing hyperlinks on displayed page (like link selection or click on a link)?

在 JEditorPane 中有 addHyperlinkListener 方法...

In JEditorPane there was addHyperlinkListener method...

我遵循了第一个答案中的建议.这是我的代码:

I followed the advice in the first answer. This is my code:

webEngine.getLoadWorker().stateProperty().addListener(new ChangeListener<State>() {
    public void changed(ObservableValue ov, State oldState, State newState) {
        if (newState == Worker.State.SUCCEEDED) {
                // note next classes are from org.w3c.dom domain
            EventListener listener = new EventListener() {
                public void handleEvent(Event ev) {
                    System.out.println("KLIKNIETO!!!");
                }
            };

            Document doc = webEngine.getDocument();
            Element el = doc.getElementById("a");
            NodeList lista = doc.getElementsByTagName("a");
            System.out.println("Liczba elementow: "+ lista.getLength());
            for (int i=0; i<lista.getLength(); i++)
                ((EventTarget)lista.item(i)).addEventListener("click", listener, false);
        }
    }
});

我现在点击链接后会收到事件.但是我需要参考点击的链接(以获取它的内容).我怎样才能做到这一点?

I now receive events after clicking on the links. However I need to get reference to the clicked link (to get it's content). How can I achieve that?

推荐答案

您可以通过在加载相关文档后使用 w3c dom 类在 Java 中添加单击事件处理程序来捕获链接单击事件.

You can catch the link click event by adding a click event handler in Java using the w3c dom classes once the relevant document has loaded.

参见 检测 JavaFX WebView 中的 HTML textarea onkeyup 事件中的 Sergey 示例.

您还可以使用 JavaScript 捕获事件(例如使用 jQuery)，这可能比 w3c dom api 更容易使用.

You can also catch the events using JavaScript (for example using jQuery), which might be a little easier to work with than the w3c dom api.

如果您使用 JavaScript 来捕获事件，并且希望将事件通知或后续处理从 JavaScript 反馈到 Java，您可以使用 JavaScript <=> Java 桥 API.

If you are using JavaScript to catch events and you want to feedback notification of the events or subsequent processing from JavaScript to Java, you can use the JavaScript <=> Java bridge api.

我已经记录了一个请求，希望将此功能的示例添加到官方 WebView 教程中.

I've logged a request to get a sample of this functionality added to the official WebView tutorial.

这篇关于JavaFX WebEngine 中的 HyperlinkListener的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！