Ejemplo n.º 1
0
  public static void main(String[] args) {
    Display display = new Display();
    final Shell shell = new Shell(display);
    GridLayout gridLayout = new GridLayout();
    gridLayout.numColumns = 3;
    shell.setLayout(gridLayout);
    ToolBar toolbar = new ToolBar(shell, SWT.NONE);
    ToolItem itemBack = new ToolItem(toolbar, SWT.PUSH);
    itemBack.setText("Back");
    ToolItem itemForward = new ToolItem(toolbar, SWT.PUSH);
    itemForward.setText("Forward");
    ToolItem itemStop = new ToolItem(toolbar, SWT.PUSH);
    itemStop.setText("Stop");
    ToolItem itemRefresh = new ToolItem(toolbar, SWT.PUSH);
    itemRefresh.setText("Refresh");
    ToolItem itemGo = new ToolItem(toolbar, SWT.PUSH);
    itemGo.setText("Go");

    GridData data = new GridData();
    data.horizontalSpan = 3;
    toolbar.setLayoutData(data);

    Label labelAddress = new Label(shell, SWT.NONE);
    labelAddress.setText("Address");

    final Text location = new Text(shell, SWT.BORDER);
    data = new GridData();
    data.horizontalAlignment = GridData.FILL;
    data.horizontalSpan = 2;
    data.grabExcessHorizontalSpace = true;
    location.setLayoutData(data);

    final Browser browser;
    try {
      browser = new Browser(shell, SWT.NONE);
    } catch (SWTError e) {
      System.out.println("Could not instantiate Browser: " + e.getMessage());
      display.dispose();
      return;
    }
    data = new GridData();
    data.horizontalAlignment = GridData.FILL;
    data.verticalAlignment = GridData.FILL;
    data.horizontalSpan = 3;
    data.grabExcessHorizontalSpace = true;
    data.grabExcessVerticalSpace = true;
    browser.setLayoutData(data);

    final Label status = new Label(shell, SWT.NONE);
    data = new GridData(GridData.FILL_HORIZONTAL);
    data.horizontalSpan = 2;
    status.setLayoutData(data);

    final ProgressBar progressBar = new ProgressBar(shell, SWT.NONE);
    data = new GridData();
    data.horizontalAlignment = GridData.END;
    progressBar.setLayoutData(data);

    /* event handling */
    Listener listener =
        new Listener() {
          @Override
          public void handleEvent(Event event) {
            ToolItem item = (ToolItem) event.widget;
            String string = item.getText();
            if (string.equals("Back")) browser.back();
            else if (string.equals("Forward")) browser.forward();
            else if (string.equals("Stop")) browser.stop();
            else if (string.equals("Refresh")) browser.refresh();
            else if (string.equals("Go")) browser.setUrl(location.getText());
          }
        };
    browser.addProgressListener(
        new ProgressListener() {
          @Override
          public void changed(ProgressEvent event) {
            if (event.total == 0) return;
            int ratio = event.current * 100 / event.total;
            progressBar.setSelection(ratio);
          }

          @Override
          public void completed(ProgressEvent event) {
            progressBar.setSelection(0);
          }
        });
    browser.addStatusTextListener(
        new StatusTextListener() {
          @Override
          public void changed(StatusTextEvent event) {
            status.setText(event.text);
          }
        });
    browser.addLocationListener(
        new LocationListener() {
          @Override
          public void changed(LocationEvent event) {
            if (event.top) location.setText(event.location);
          }

          @Override
          public void changing(LocationEvent event) {}
        });
    itemBack.addListener(SWT.Selection, listener);
    itemForward.addListener(SWT.Selection, listener);
    itemStop.addListener(SWT.Selection, listener);
    itemRefresh.addListener(SWT.Selection, listener);
    itemGo.addListener(SWT.Selection, listener);
    location.addListener(
        SWT.DefaultSelection,
        new Listener() {
          @Override
          public void handleEvent(Event e) {
            browser.setUrl(location.getText());
          }
        });

    shell.open();
    browser.setUrl("http://eclipse.org");

    while (!shell.isDisposed()) {
      if (!display.readAndDispatch()) display.sleep();
    }
    display.dispose();
  }