public void mouseClicked(MouseEvent ev) {
      Window w = (Window) ev.getSource();
      Frame f = null;

      if (w instanceof Frame) {
        f = (Frame) w;
      } else {
        return;
      }

      Point convertedPoint = SwingUtilities.convertPoint(w, ev.getPoint(), getTitlePane());

      int state = f.getExtendedState();
      if (getTitlePane() != null && getTitlePane().contains(convertedPoint)) {
        if ((ev.getClickCount() % 2) == 0 && ((ev.getModifiers() & InputEvent.BUTTON1_MASK) != 0)) {
          if (f.isResizable()) {
            if ((state & Frame.MAXIMIZED_BOTH) != 0) {
              f.setExtendedState(state & ~Frame.MAXIMIZED_BOTH);
            } else {
              f.setExtendedState(state | Frame.MAXIMIZED_BOTH);
            }
            return;
          }
        }
      }
    }
    public void mouseMoved(MouseEvent ev) {
      JRootPane root = getRootPane();

      if (root.getWindowDecorationStyle() == JRootPane.NONE) {
        return;
      }

      Window w = (Window) ev.getSource();

      Frame f = null;
      Dialog d = null;

      if (w instanceof Frame) {
        f = (Frame) w;
      } else if (w instanceof Dialog) {
        d = (Dialog) w;
      }

      // Update the cursor
      int cursor = getCursor(calculateCorner(w, ev.getX(), ev.getY()));

      if (cursor != 0
          && ((f != null && (f.isResizable() && (f.getExtendedState() & Frame.MAXIMIZED_BOTH) == 0))
              || (d != null && d.isResizable()))) {
        w.setCursor(Cursor.getPredefinedCursor(cursor));
      } else {
        w.setCursor(lastCursor);
      }
    }
    public void mousePressed(MouseEvent ev) {
      JRootPane rootPane = getRootPane();

      if (rootPane.getWindowDecorationStyle() == JRootPane.NONE) {
        return;
      }
      Point dragWindowOffset = ev.getPoint();
      Window w = (Window) ev.getSource();
      if (w != null) {
        w.toFront();
      }
      Point convertedDragWindowOffset =
          SwingUtilities.convertPoint(w, dragWindowOffset, getTitlePane());

      Frame f = null;
      Dialog d = null;

      if (w instanceof Frame) {
        f = (Frame) w;
      } else if (w instanceof Dialog) {
        d = (Dialog) w;
      }

      int frameState = (f != null) ? f.getExtendedState() : 0;

      if (getTitlePane() != null && getTitlePane().contains(convertedDragWindowOffset)) {
        if ((f != null && ((frameState & Frame.MAXIMIZED_BOTH) == 0) || (d != null))
            && dragWindowOffset.y >= BORDER_DRAG_THICKNESS
            && dragWindowOffset.x >= BORDER_DRAG_THICKNESS
            && dragWindowOffset.x < w.getWidth() - BORDER_DRAG_THICKNESS) {
          isMovingWindow = true;
          dragOffsetX = dragWindowOffset.x;
          dragOffsetY = dragWindowOffset.y;
        }
      } else if (f != null && f.isResizable() && ((frameState & Frame.MAXIMIZED_BOTH) == 0)
          || (d != null && d.isResizable())) {
        dragOffsetX = dragWindowOffset.x;
        dragOffsetY = dragWindowOffset.y;
        dragWidth = w.getWidth();
        dragHeight = w.getHeight();
        dragCursor = getCursor(calculateCorner(w, dragWindowOffset.x, dragWindowOffset.y));
      }
    }
    public void propertyChange(PropertyChangeEvent pce) {
      String name = pce.getPropertyName();

      if ("resizable".equals(name) || "state".equals(name)) {
        Frame frame = getFrame();

        if (frame != null) {
          setState(frame.getExtendedState(), true);
        }
        if ("resizable".equals(name)) {
          getRootPane().repaint();
        }
      } else if ("title".equals(name)) {
        repaint();
      } else if ("componentOrientation" == name) {
        revalidate();
        repaint();
      } else if ("iconImage" == name) {
        updateSystemIcon();
        revalidate();
        repaint();
      }
    }