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63 lines
1.3 KiB
63 lines
1.3 KiB
/*
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* Copyright (c) 1998, 2013, Oracle and/or its affiliates. All rights reserved.
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* ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*
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*/
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package javax.swing.plaf.basic;
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import javax.swing.*;
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import javax.swing.plaf.UIResource;
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import java.awt.Container;
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import java.awt.Dimension;
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/**
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* The default layout manager for Popup menus and menubars. This
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* class is an extension of BoxLayout which adds the UIResource tag
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* so that pluggable L&Fs can distinguish it from user-installed
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* layout managers on menus.
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*
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* @author Georges Saab
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*/
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public class DefaultMenuLayout extends BoxLayout implements UIResource {
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public DefaultMenuLayout(Container target, int axis) {
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super(target, axis);
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}
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public Dimension preferredLayoutSize(Container target) {
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if (target instanceof JPopupMenu) {
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JPopupMenu popupMenu = (JPopupMenu) target;
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sun.swing.MenuItemLayoutHelper.clearUsedClientProperties(popupMenu);
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if (popupMenu.getComponentCount() == 0) {
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return new Dimension(0, 0);
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}
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}
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// Make BoxLayout recalculate cached preferred sizes
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super.invalidateLayout(target);
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return super.preferredLayoutSize(target);
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}
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}
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