public void goForward() {
    try {
      WebEngine engine = webView.getEngine();
      WebHistory history = engine.getHistory();
      history.go(1);
    } catch (Exception e) {

    }
  }
Exemple #2
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  // Adding functionality to the forward button
  public String goForward() {
    final WebHistory history = browser.getEngine().getHistory();
    ObservableList<WebHistory.Entry> entryList = history.getEntries();
    int currentIndex = history.getCurrentIndex();

    Platform.runLater(() -> history.go(1));
    if (currentIndex < entryList.size() - 2) {
      entryList.get(currentIndex + 1);
      forwardButton.setDisable(false);
    } else {
      entryList.get(history.getCurrentIndex());
      forwardButton.setDisable(true);
      backButton.setDisable(false);
    }
    return entryList.get(currentIndex).getUrl();
  }
 private void addButtonsAvailabilityListeners(JButton backButton, JButton forwardButton) {
   Platform.runLater(
       () ->
           myEngine
               .getLoadWorker()
               .stateProperty()
               .addListener(
                   (ov, oldState, newState) -> {
                     if (newState == Worker.State.SUCCEEDED) {
                       final WebHistory history = myEngine.getHistory();
                       boolean isGoBackAvailable = history.getCurrentIndex() > 0;
                       boolean isGoForwardAvailable =
                           history.getCurrentIndex() < history.getEntries().size() - 1;
                       ApplicationManager.getApplication()
                           .invokeLater(
                               () -> {
                                 backButton.setEnabled(isGoBackAvailable);
                                 forwardButton.setEnabled(isGoForwardAvailable);
                               });
                     }
                   }));
 }
  public Browser(final Stage stage) {
    // apply the styles
    getStyleClass().add("browser");

    for (int i = 0; i < captions.length; i++) {
      // create hyperlinks
      Hyperlink hpl = hpls[i] = new Hyperlink(captions[i]);
      Image image = images[i] = new Image(getClass().getResourceAsStream(imageFiles[i]));
      hpl.setGraphic(new ImageView(image));
      final String url = urls[i];
      final boolean addButton = (hpl.getText().equals("Help"));

      // process event
      hpl.setOnAction(
          (ActionEvent e) -> {
            needDocumentationButton = addButton;
            webEngine.load(url);
          });
    }

    comboBox.setPrefWidth(60);

    // create the toolbar
    toolBar = new HBox();
    toolBar.setAlignment(Pos.CENTER);
    toolBar.getStyleClass().add("browser-toolbar");
    toolBar.getChildren().add(comboBox);
    toolBar.getChildren().addAll(hpls);
    toolBar.getChildren().add(createSpacer());

    // set action for the button
    toggleHelpTopics.setOnAction(
        (ActionEvent t) -> {
          webEngine.executeScript("toggle_visibility('help_topics')");
        });

    smallView.setPrefSize(120, 80);

    // handle popup windows
    webEngine.setCreatePopupHandler(
        (PopupFeatures config) -> {
          smallView.setFontScale(0.8);
          if (!toolBar.getChildren().contains(smallView)) {
            toolBar.getChildren().add(smallView);
          }
          return smallView.getEngine();
        });

    // process history
    final WebHistory history = webEngine.getHistory();
    history
        .getEntries()
        .addListener(
            (Change<? extends Entry> c) -> {
              c.next();
              c.getRemoved()
                  .stream()
                  .forEach(
                      (e) -> {
                        comboBox.getItems().remove(e.getUrl());
                      });
              c.getAddedSubList()
                  .stream()
                  .forEach(
                      (e) -> {
                        comboBox.getItems().add(e.getUrl());
                      });
            });

    // set the behavior for the history combobox
    comboBox.setOnAction(
        (Event ev) -> {
          int offset = comboBox.getSelectionModel().getSelectedIndex() - history.getCurrentIndex();
          history.go(offset);
        });

    // process page loading
    webEngine
        .getLoadWorker()
        .stateProperty()
        .addListener(
            (ObservableValue<? extends State> ov, State oldState, State newState) -> {
              toolBar.getChildren().remove(toggleHelpTopics);
              if (newState == State.SUCCEEDED) {
                JSObject win = (JSObject) webEngine.executeScript("window");
                win.setMember("app", new JavaApp());
                if (needDocumentationButton) {
                  toolBar.getChildren().add(toggleHelpTopics);
                }
              }
            });
    // adding context menu
    final ContextMenu cm = new ContextMenu();
    MenuItem cmItem1 = new MenuItem("Print");
    cm.getItems().add(cmItem1);
    toolBar.addEventHandler(
        MouseEvent.MOUSE_CLICKED,
        (MouseEvent e) -> {
          if (e.getButton() == MouseButton.SECONDARY) {
            cm.show(toolBar, e.getScreenX(), e.getScreenY());
          }
        });

    // processing print job
    cmItem1.setOnAction(
        (ActionEvent e) -> {
          PrinterJob job = PrinterJob.createPrinterJob();
          if (job != null) {
            webEngine.print(job);
            job.endJob();
          }
        });

    // load the home page
    webEngine.load("http://www.cnn.com");

    // add components
    getChildren().add(toolBar);
    getChildren().add(browser);
  }
Exemple #5
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  private BorderPane webViewScene() {
    url = new TextField();
    url.setPrefWidth(800);
    browser = new WebView();
    engine = browser.getEngine();

    url.setText(fileUrl);
    engine.load(fileUrl);

    history = browser.getEngine().getHistory();

    backButton = new Button(null, new ImageView(new Image("res/BrowserIcons/back.png")));
    backButton.setOnAction(
        (ActionEvent e) -> {
          if (!checkIntConnection(defaultUrl)) {
            alert();
          } else browser.getEngine().load(goBack());
        });
    backButton.addEventHandler(
        MouseEvent.MOUSE_ENTERED, event -> backButton.setEffect(new DropShadow()));
    backButton.addEventHandler(MouseEvent.MOUSE_EXITED, event -> backButton.setEffect(null));

    forwardButton = new Button(null, new ImageView(new Image("res/BrowserIcons/forward.png")));
    forwardButton.setOnAction(
        (ActionEvent e) -> {
          if (!checkIntConnection(defaultUrl)) {
            alert();
          } else browser.getEngine().load(goForward());
        });
    forwardButton.addEventHandler(
        MouseEvent.MOUSE_ENTERED, event -> forwardButton.setEffect(new DropShadow()));
    forwardButton.addEventHandler(MouseEvent.MOUSE_EXITED, event -> forwardButton.setEffect(null));

    reloadButton = new Button(null, new ImageView(new Image("res/BrowserIcons/reload.png")));
    reloadButton.setOnAction(
        event -> {
          if (!checkIntConnection(defaultUrl)) {
            alert();
          } else browser.getEngine().reload();
        });
    reloadButton.addEventHandler(
        MouseEvent.MOUSE_ENTERED, event -> reloadButton.setEffect(new DropShadow()));
    reloadButton.addEventHandler(MouseEvent.MOUSE_EXITED, event -> reloadButton.setEffect(null));

    goButton = new Button(null, new ImageView(new Image("res/BrowserIcons/go.jpg")));
    goButton.setOnAction(
        event -> {
          // adding the http or https prefix if user didn't type it
          if (!checkIntConnection(defaultUrl)) {
            alert();
          } else {
            if (url.getText().length() > 7
                && (url.getText(0, 7).equals("http://") || url.getText(0, 8).equals("https://"))) {
              browser.getEngine().load(url.getText());
            } else if (url.getText().length() > 7 && !url.getText(0, 7).equals("http://")) {
              browser.getEngine().load("http://" + url.getText());
            } else {
              browser.getEngine().load("https://" + url.getText());
            }
          }
        });
    goButton.addEventHandler(
        MouseEvent.MOUSE_ENTERED, event -> goButton.setEffect(new DropShadow()));
    goButton.addEventHandler(MouseEvent.MOUSE_EXITED, event -> goButton.setEffect(null));

    webHistoryComboBox = new ComboBox();
    webHistoryComboBox.setPromptText("Web History");
    webHistoryComboBox.setPrefWidth(200);
    webHistoryComboBox.setOnAction(
        event -> {
          // Navigate to the link in the history index
          int offset =
              webHistoryComboBox.getSelectionModel().getSelectedIndex() - history.getCurrentIndex();
          history.go(offset);
        });

    // Displying browse history in a combo box
    history
        .getEntries()
        .addListener(
            (ListChangeListener<WebHistory.Entry>)
                c -> {
                  c.next();
                  for (WebHistory.Entry e : c.getRemoved())
                    webHistoryComboBox.getItems().remove(e.getUrl());
                  for (WebHistory.Entry e : c.getAddedSubList())
                    webHistoryComboBox.getItems().add(e.getUrl());
                });

    // Enabling and Disabling back and forward buttons
    browser
        .getEngine()
        .getLoadWorker()
        .stateProperty()
        .addListener(
            (observable, oldValue, newValue) -> {
              if (!browser.getEngine().getHistory().getEntries().isEmpty()) {
                int index = browser.getEngine().getHistory().getCurrentIndex();
                url.setText(browser.getEngine().getHistory().getEntries().get(index).getUrl());
                if (index == 0) {
                  backButton.setDisable(true);
                } else {
                  backButton.setDisable(false);
                }
                if (browser.getEngine().getHistory().getEntries().size() == 1) {
                  forwardButton.setDisable(true);
                } else if (index < browser.getEngine().getHistory().getEntries().size() - 2) {
                  forwardButton.setDisable(false);
                } else if (index < browser.getEngine().getHistory().getEntries().size() - 1) {
                  forwardButton.setDisable(false);
                } else if (index == browser.getEngine().getHistory().getEntries().size() - 1) {
                  forwardButton.setDisable(true);
                }
              }
            });

    progress.setPrefSize(25, 25);
    progress.visibleProperty().bind(browser.getEngine().getLoadWorker().runningProperty());
    BorderPane border = new BorderPane();
    HBox topBar = new HBox();
    topBar.setAlignment(Pos.CENTER);
    topBar.setSpacing(10);
    topBar.setPadding(new Insets(10, 10, 10, 10));
    topBar
        .getChildren()
        .addAll(
            progress, reloadButton, url, goButton, backButton, forwardButton, webHistoryComboBox);

    border.setTop(topBar);
    border.setCenter(browser);
    border.setPrefHeight(Screen.getPrimary().getVisualBounds().getHeight());
    border.setPrefWidth(Screen.getPrimary().getVisualBounds().getWidth());

    return border;
  }