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/*
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* Copyright 1998-2006 Sun Microsystems, Inc. All Rights Reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Sun designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Sun in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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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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import static sun.swing.SwingUtilities2.BASICMENUITEMUI_MAX_TEXT_OFFSET;
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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 plauggable 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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// Before the calculation of menu preferred size
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// clear the previously calculated maximal widths and offsets
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// in menu's Client Properties
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popupMenu.putClientProperty(BasicMenuItemUI.MAX_ACC_WIDTH, null);
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popupMenu.putClientProperty(BasicMenuItemUI.MAX_ARROW_WIDTH, null);
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popupMenu.putClientProperty(BasicMenuItemUI.MAX_CHECK_WIDTH, null);
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popupMenu.putClientProperty(BasicMenuItemUI.MAX_ICON_WIDTH, null);
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popupMenu.putClientProperty(BasicMenuItemUI.MAX_LABEL_WIDTH, null);
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popupMenu.putClientProperty(BasicMenuItemUI.MAX_TEXT_WIDTH, null);
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popupMenu.putClientProperty(BASICMENUITEMUI_MAX_TEXT_OFFSET, null);
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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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