Java Code Examples for org.eclipse.swt.widgets.Display#getFocusControl()

protected void paintControlBorder(final PaintEvent e) {
    final GC gc = e.gc;
    final Display display = e.display;
    if (display != null && gc != null && !gc.isDisposed()) {
        final Control focused = display.getFocusControl();
        final GC parentGC = gc;
        parentGC.setAdvanced(true);
        final Rectangle r = ContentAssistText.this.getBounds();
        if (focused == null || focused.getParent() != null && !focused.getParent().equals(ContentAssistText.this)) {
            parentGC.setForeground(display.getSystemColor(SWT.COLOR_GRAY));
        } else {
            parentGC.setForeground(display.getSystemColor(SWT.COLOR_WIDGET_BORDER));
        }
        parentGC.setLineWidth(1);
        parentGC.drawRectangle(0, 0, r.width - 1, r.height - 1);
    }
}
 

@Override
public void setInitiallyActiveShell(Shell activeShell) {
    this.fInitiallyActiveShell = activeShell;
    this.fFocusControl = null;
    if (activeShell != null) {
        Display display = activeShell.getDisplay();
        if (display != null) {
            this.fFocusControl = display.getFocusControl();
        }
    }
}
 

protected void drawBorder(final Composite container, Event e) {
    final GC gc = e.gc;
    final Display display = e.display;
    if (display != null && gc != null && !gc.isDisposed()) {
        final Control focused = display.getFocusControl();
        gc.setAdvanced(true);
        gc.setForeground(getBorderColor(focused, container));
        gc.setLineWidth(1);
        final Rectangle r = container.getBounds();
        gc.drawRectangle(0, 0, r.width - 1, r.height - 1);
    }
}
 

protected boolean isFocusAncestorA (Control control) {
    Display display = getDisplay ();
    Control focusControl = display.getFocusControl ();
    while (focusControl != null && focusControl != control) {
        focusControl = focusControl. getParent();
    }
    return control == focusControl;
}
 

/**
 * Opens a notification window next to a control. The notification window will show the given
 * title as the title of the balloon, The given text as the description.
 *
 * <p>The window will be hidden automatically after the value specified in the timeout expires
 *
 * <p><b>Note:</b> The balloon window is always anchored to the given control at position (0,0).
 * Specifying the balloon window anchor is relative to this point.
 *
 * <p>TODO wrap the contents so the balloon notification does not expand across two screens for a
 * long text. OR even better: do not show long notifications. users tend to ignore them anyway!
 *
 * @param control the control, next to where the widget will appear
 * @param anchor the anchor of the balloon window
 * @param title the title of the balloon
 * @param text the text to display as contents
 */
public static void showNotification(Control control, int anchor, String title, String text) {

  if (control != null && control.isDisposed()) {
    control = null;
  }

  /*
   * show message at least 8 secs, but show it longer for longer messages
   * Referenced by wikipedia, a user can read 2,5 words per second so we
   * approximate 400ms per word
   */
  int timeout = Math.max(8000, text.split("\\s").length * 400);

  // close all previous balloon notifications like it is done in
  // windows to prevent overlapping of multiple balloons...
  BalloonNotification.removeAllActiveNotifications();

  final BalloonWindow window =
      new BalloonWindow(
          control != null ? control.getShell() : null, SWT.NO_FOCUS | SWT.TOOL | SWT.TITLE);

  window.setAnchor(anchor);
  windows.add(window);
  /*
   * Note: if you add SWT.CLOSE to the style of the BalloonWindow, it will
   * only be closed when directly clicking on the close icon (x) and
   * therefore break user expectations. FIXME: find out a way to display
   * the closing X AND make the bubble close on any click anywhere on it.
   */

  window.setText(title);

  /*
   * Adding the text to the contents. Pack() is required so the size of
   * the composite is recalculated, else the contents won't show
   */
  Composite content = window.getContents();
  content.setLayout(new FillLayout());

  Label message = new Label(content, SWT.NONE);
  message.setText(text);
  content.pack(true);

  message.setBackground(WHITE);
  message.setForeground(BLACK);

  // make window close when clicking on balloon text, too
  window.addSelectionControl(message);

  // Locate the balloon to the widget location
  if (control != null) {
    Point widgetLocation = control.toDisplay(new Point(0, 0));
    window.setLocation(widgetLocation);
  }

  // Runnable that will close the window after time has been expired
  final Runnable closeWindow =
      ThreadUtils.wrapSafe(
          log,
          new Runnable() {

            @Override
            public void run() {
              final Shell shell = window.getShell();
              if (shell.isDisposed()) return;

              window.close();
            }
          });

  window.getShell().getDisplay().timerExec(timeout, closeWindow);

  Display display = control != null ? control.getDisplay() : Display.getCurrent();

  Control lastControlWithFocus = display != null ? display.getFocusControl() : null;

  window.open();

  if (lastControlWithFocus != null) lastControlWithFocus.setFocus();
}