/**
     * Calculates the maximum size dimensions for the specified panal given the components in the
     * specified parent container.
     */
    public Dimension maximumLayoutSize(Container target) {
      synchronized (target.getTreeLock()) {
        Dimension dim = new Dimension(0, 0);
        int size = actions.size();
        if ((grip != null) && grip.isVisible()) {
          Dimension d = grip.getPreferredSize();
          dim.width += d.width;
          dim.width += hgap;
        }
        Component last = null;
        for (int i = 0; i < size; i++) {
          Component comp = (Component) actions.elementAt(i);
          if (comp.isVisible()) {
            Dimension d = comp.getPreferredSize();
            dim.width += d.width;
            dim.height = Math.max(dim.height, d.height);
            dim.width += hgap;
            last = comp;
          }
        }
        if (last != null) {
          Dimension prefSize = last.getPreferredSize();
          Dimension maxSize = last.getMaximumSize();
          if (prefSize != maxSize) {
            dim.width = dim.width - prefSize.width + maxSize.width;
            dim.height = Math.max(dim.height, maxSize.height);
          }
        }
        Insets insets = target.getInsets();
        dim.width += insets.left + insets.right;
        dim.height += insets.top + insets.bottom;

        return dim;
      }
    }
 private void hideDropDownButton() {
   for (Component component : this.getComponents()) {
     if (component instanceof AbstractButton && component.isVisible()) {
       component.setVisible(false);
       this.revalidate();
     }
   }
 }
    /** Lays out the container in the specified panel. */
    public void layoutContainer(Container target) {
      synchronized (target.getTreeLock()) {
        Insets insets = target.getInsets();
        Dimension dim = target.getSize();

        int fullHeight = dim.height;
        int bottom = dim.height - insets.bottom - 1;
        int top = 0 + insets.top;
        int left = insets.left;
        int maxPosition = dim.width - (insets.left + insets.right) - hgap;
        int right = dim.width - insets.right;
        maxPosition = right;
        int height = bottom - top;
        int size = actions.size();
        int w, h;
        if ((grip != null) && grip.isVisible()) {
          Dimension d = grip.getPreferredSize();
          grip.setBounds(left, top + vgap, d.width, bottom - top - 2 * vgap);
          left += d.width;
          left += hgap;
        }
        for (int i = 0; i < size; i++) {
          left += hgap;
          Component comp = (Component) actions.elementAt(i);
          Dimension d;
          Dimension minSize = comp.getMinimumSize();

          if (i == size - 1) d = comp.getMaximumSize();
          else d = comp.getPreferredSize();
          w = d.width;
          h = Math.min(height, d.height);
          if ((left < maxPosition) && (left + w > maxPosition)) {
            if (maxPosition - left >= minSize.width) w = maxPosition - left;
          }

          comp.setBounds(left, (fullHeight - d.height) / 2, w, h);

          //  	  if (i == size - 1)
          //  	    d = comp.getMaximumSize();
          //  	  else
          //  	    d = comp.getPreferredSize();
          //  	  if ((left + d.width) > right)
          //  	    w = right - left;
          //  	  else
          //  	    w = d.width;
          //  	  h = Math.min (height, d.height);
          //  	  comp.setBounds (left, (fullHeight - d.height)/2, w, h);

          left += d.width;
        }
      }
    }
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  /**
   * Sets a specified <code>Component</code> to be the glass pane for this root pane. The glass pane
   * should normally be a lightweight, transparent component, because it will be made visible when
   * ever the root pane needs to grab input events.
   *
   * <p>The new glass pane's visibility is changed to match that of the current glass pane. An
   * implication of this is that care must be taken when you want to replace the glass pane and make
   * it visible. Either of the following will work:
   *
   * <pre>
   *   root.setGlassPane(newGlassPane);
   *   newGlassPane.setVisible(true);
   * </pre>
   *
   * or:
   *
   * <pre>
   *   root.getGlassPane().setVisible(true);
   *   root.setGlassPane(newGlassPane);
   * </pre>
   *
   * @param glass the <code>Component</code> to use as the glass pane for this <code>JRootPane
   *     </code>
   * @exception NullPointerException if the <code>glass</code> parameter is <code>null</code>
   */
  public void setGlassPane(Component glass) {
    if (glass == null) {
      throw new NullPointerException("glassPane cannot be set to null.");
    }

    AWTAccessor.getComponentAccessor().setMixingCutoutShape(glass, new Rectangle());

    boolean visible = false;
    if (glassPane != null && glassPane.getParent() == this) {
      this.remove(glassPane);
      visible = glassPane.isVisible();
    }

    glass.setVisible(visible);
    glassPane = glass;
    this.add(glassPane, 0);
    if (visible) {
      repaint();
    }
  }
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 /**
  * The <code>glassPane</code> and <code>contentPane</code> have the same bounds, which means
  * <code>JRootPane</code> does not tiles its children and this should return false. On the other
  * hand, the <code>glassPane</code> is normally not visible, and so this can return true if the
  * <code>glassPane</code> isn't visible. Therefore, the return value here depends upon the
  * visibility of the <code>glassPane</code>.
  *
  * @return true if this component's children don't overlap
  */
 public boolean isOptimizedDrawingEnabled() {
   return !glassPane.isVisible();
 }