修改JavaFX WebView中的上下文菜单 [英] Modify context menu in JavaFX WebView
问题描述
我正在尝试在用户右键单击链接时向JavaFX WebView中的上下文菜单添加一些选项，但是我无法弄清楚如何执行此操作。
I'm trying to add some options to the context menu in a JavaFX WebView when the user right clicks a link, however I can't figure out how to do it.
我发现我可以使用以下方式添加自己的上下文菜单：
I found I could add my own context menu using:
final ContextMenu contextMenu = new ContextMenu();
view.addEventHandler(MouseEvent.MOUSE_PRESSED, new EventHandler<MouseEvent>() {
@Override
public void handle(MouseEvent mouseEvent) {
System.out.println(mouseEvent.getEventType());
if(mouseEvent.isSecondaryButtonDown()) {
System.out.println("Secondary");
contextMenu.show(view, mouseEvent.getSceneX(), mouseEvent.getSceneY());
} else if (mouseEvent.isPrimaryButtonDown()) {
System.out.println("Primary");
} else if (mouseEvent.isMiddleButtonDown()) {
System.out.println("Middle");
}
}
});
javafx.scene.control.MenuItem menuItem1 = new javafx.scene.control.MenuItem("View Source");
menuItem1.setOnAction(new EventHandler<javafx.event.ActionEvent>() {
@Override
public void handle(javafx.event.ActionEvent actionEvent) {
System.out.println("Link: " + rightClickURL);
System.out.println("You clicked view source");
}
});
contextMenu.getItems().add(menuItem1);
不幸的是，当我这样做时，两个菜单都显示出来：
Unfortunately, when I do that both menus appear:
如果我使用 view.setContextMenuEnabled（false）; 然后默认菜单消失。不幸的是，这样做也阻止我检测哪个链接被右击。以下是我正在使用的代码：
If I use view.setContextMenuEnabled(false); then the default menu disappears. Unfortunately doing that also prevents me from detecting which link was right clicked. Here is the code I'm using for that:
engine.getLoadWorker().stateProperty().addListener(new ChangeListener<Worker.State>() {
@Override
public void changed(ObservableValue ov, Worker.State oldState, Worker.State newState) {
if (newState == Worker.State.SUCCEEDED) {
EventListener listener = new EventListener() {
@Override
public void handleEvent(org.w3c.dom.events.Event evt) {
String domEventType = evt.getType();
if (domEventType.equals(EVENT_TYPE_CLICK)) {
String href = ((Element)evt.getTarget()).getAttribute("href");
} else if (domEventType.equals(EVENT_TYPE_RIGHT_CLICK)) {
String href = ((Element)evt.getTarget()).getAttribute("href");
rightClickURL = href;
System.out.println(href);
}
}
};
Document doc = engine.getDocument();
NodeList nodeList = doc.getElementsByTagName("a");
for (int i = 0; i < nodeList.getLength(); i++) {
((EventTarget) nodeList.item(i)).addEventListener(EVENT_TYPE_CLICK, listener, false);
((EventTarget) nodeList.item(i)).addEventListener(EVENT_TYPE_RIGHT_CLICK, listener, false);
}
}
}
});
所以我的问题是：如何访问默认的ContextMenu以便我可以自定义它？我已经搜索过文档，但找不到任何允许您访问默认ContextMenu的方法。似乎必须有一种方法可以做到这一点，但我很难过如何。
So my question is this: how can I access the default ContextMenu so I can customize it? I've scoured the docs but cannot find any method that allows you to access the default ContextMenu. It seems like there must be a way to do this but I'm stumped as to how.
如果无法自定义默认的ContextMenu，有谁知道我怎么做右键单击链接时显示自定义上下文菜单，还捕获单击了哪个链接？我一直试图在没有运气的情况下实现这一天......
If customizing the default ContextMenu is not possible, does anyone know how I can show a custom context menu when right clicking a link and also capture which link was clicked? I've been trying to achieve this for days with absolutely no luck...
推荐答案
目前这是不可能的。 JavaFX上有一个未解决的问题：
https://javafx-jira.kenai.com/浏览/ RT-20306
Currently that's not possible. There is an open issue on JavaFX for that: https://javafx-jira.kenai.com/browse/RT-20306
如果您只想添加不同的上下文菜单，那么您可以这样做
If you just want to add a different context menu, then you could do that
webView.setOnMouseClicked(new EventHandler<MouseEvent>() {
@Override
public void handle(MouseEvent mouse) {
if (mouse.getButton() == MouseButton.SECONDARY) {
menu = new ContextMenu();
//add some menu items here
menu.show(this, mouse.getScreenX(), mouse.getScreenY());
} else {
if (menu != null) {
menu.hide();
}
}
}
});
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