Exemplo n.º 1
0
    private void showJPopupMenu(MouseEvent e) {
      try {
        if (e.isPopupTrigger() && menu != null) {
          if (window == null) {

            if (isWindows) {
              window = new JDialog((Frame) null);
              ((JDialog) window).setUndecorated(true);
            } else {
              window = new JWindow((Frame) null);
            }
            window.setAlwaysOnTop(true);
            Dimension size = menu.getPreferredSize();

            Point centerPoint = GraphicsEnvironment.getLocalGraphicsEnvironment().getCenterPoint();
            if (e.getY() > centerPoint.getY()) window.setLocation(e.getX(), e.getY() - size.height);
            else window.setLocation(e.getX(), e.getY());

            window.setVisible(true);

            menu.show(((RootPaneContainer) window).getContentPane(), 0, 0);

            // popup works only for focused windows
            window.toFront();
          }
        }
      } catch (Exception ignored) {
      }
    }
 private static void setAlwaysOnTop(@NotNull Window window, boolean value) {
   if (value != window.isAlwaysOnTop()) {
     try {
       window.setAlwaysOnTop(value);
     } catch (Exception ignored) {
     }
   }
 }