java - javafx webview/webengine 上的自定义上下文菜单

Question

如何在 WebEngine javafx 中为文档的整个条目定制上下文菜单？
像这样

+------------+
|Reload      |
|Save page   |
|Hide Images |
+------------+

我喜欢为整个文档条目调用并显示此上下文弹出窗口(每个节点都相同)。谢谢。

Answer 1

我看不到与默认上下文菜单交互的方法。但是，禁用它并实现您自己的并不难。

禁用默认上下文菜单

webView.setContextMenuEnabled();

然后创建您自己的上下文菜单，并在 Web View 中注册一个鼠标监听器以在右键单击时显示它:

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.ContextMenu;
import javafx.scene.control.MenuItem;
import javafx.scene.control.TextField;
import javafx.scene.input.MouseButton;
import javafx.scene.layout.BorderPane;
import javafx.scene.web.WebView;
import javafx.stage.Stage;


public class WebViewContextMenuTest extends Application {

    private final String START_URL = 
            "http://stackoverflow.com/questions/27047447/customized-context-menu-on-javafx-webview-webengine/27047830#27047830";

    @Override
    public void start(Stage primaryStage) {
        TextField locationField = new TextField(START_URL);
        WebView webView = new WebView();
        webView.getEngine().load(START_URL);

        webView.setContextMenuEnabled(false);
        createContextMenu(webView);

        locationField.setOnAction(e -> {
            webView.getEngine().load(getUrl(locationField.getText()));
        });
        BorderPane root = new BorderPane(webView, locationField, null, null, null);
        primaryStage.setScene(new Scene(root, 800, 600));
        primaryStage.show();

    }

    private void createContextMenu(WebView webView) {
        ContextMenu contextMenu = new ContextMenu();
        MenuItem reload = new MenuItem("Reload");
        reload.setOnAction(e -> webView.getEngine().reload());
        MenuItem savePage = new MenuItem("Save Page");
        savePage.setOnAction(e -> System.out.println("Save page..."));
        MenuItem hideImages = new MenuItem("Hide Images");
        hideImages.setOnAction(e -> System.out.println("Hide Images..."));
        contextMenu.getItems().addAll(reload, savePage, hideImages);

        webView.setOnMousePressed(e -> {
            if (e.getButton() == MouseButton.SECONDARY) {
                contextMenu.show(webView, e.getScreenX(), e.getScreenY());
            } else {
                contextMenu.hide();
            }
        });
    }

    private String getUrl(String text) {
        if (text.indexOf("://")==-1) {
            return "http://" + text ;
        } else {
            return text ;
        }
    }

    public static void main(String[] args) {
        launch(args);
    }
}