708
709 /**
710 * Returns the current glass pane for this <code>JRootPane</code>.
711 * @return the current glass pane
712 * @see #setGlassPane
713 */
714 public Component getGlassPane() {
715 return glassPane;
716 }
717
718 /**
719 * If a descendant of this <code>JRootPane</code> calls
720 * <code>revalidate</code>, validate from here on down.
721 *<p>
722 * Deferred requests to layout a component and its descendents again.
723 * For example, calls to <code>revalidate</code>, are pushed upwards to
724 * either a <code>JRootPane</code> or a <code>JScrollPane</code>
725 * because both classes override <code>isValidateRoot</code> to return true.
726 *
727 * @see JComponent#isValidateRoot
728 * @return true
729 */
730 public boolean isValidateRoot() {
731 return true;
732 }
733
734 /**
735 * The <code>glassPane</code> and <code>contentPane</code>
736 * have the same bounds, which means <code>JRootPane</code>
737 * does not tiles its children and this should return false.
738 * On the other hand, the <code>glassPane</code>
739 * is normally not visible, and so this can return true if the
740 * <code>glassPane</code> isn't visible. Therefore, the
741 * return value here depends upon the visiblity of the
742 * <code>glassPane</code>.
743 *
744 * @return true if this component's children don't overlap
745 */
746 public boolean isOptimizedDrawingEnabled() {
747 return !glassPane.isVisible();
748 }
749
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708
709 /**
710 * Returns the current glass pane for this <code>JRootPane</code>.
711 * @return the current glass pane
712 * @see #setGlassPane
713 */
714 public Component getGlassPane() {
715 return glassPane;
716 }
717
718 /**
719 * If a descendant of this <code>JRootPane</code> calls
720 * <code>revalidate</code>, validate from here on down.
721 *<p>
722 * Deferred requests to layout a component and its descendents again.
723 * For example, calls to <code>revalidate</code>, are pushed upwards to
724 * either a <code>JRootPane</code> or a <code>JScrollPane</code>
725 * because both classes override <code>isValidateRoot</code> to return true.
726 *
727 * @see JComponent#isValidateRoot
728 * @see java.awt.Container#isValidateRoot
729 * @return true
730 */
731 @Override
732 public boolean isValidateRoot() {
733 return true;
734 }
735
736 /**
737 * The <code>glassPane</code> and <code>contentPane</code>
738 * have the same bounds, which means <code>JRootPane</code>
739 * does not tiles its children and this should return false.
740 * On the other hand, the <code>glassPane</code>
741 * is normally not visible, and so this can return true if the
742 * <code>glassPane</code> isn't visible. Therefore, the
743 * return value here depends upon the visiblity of the
744 * <code>glassPane</code>.
745 *
746 * @return true if this component's children don't overlap
747 */
748 public boolean isOptimizedDrawingEnabled() {
749 return !glassPane.isVisible();
750 }
751
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