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Java example source code file (DefaultMenuLayout.java)
The DefaultMenuLayout.java Java example source code/* * Copyright (c) 1998, 2013, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package javax.swing.plaf.basic; import javax.swing.*; import javax.swing.plaf.UIResource; import java.awt.Container; import java.awt.Dimension; /** * The default layout manager for Popup menus and menubars. This * class is an extension of BoxLayout which adds the UIResource tag * so that pluggable L&Fs can distinguish it from user-installed * layout managers on menus. * * @author Georges Saab */ public class DefaultMenuLayout extends BoxLayout implements UIResource { public DefaultMenuLayout(Container target, int axis) { super(target, axis); } public Dimension preferredLayoutSize(Container target) { if (target instanceof JPopupMenu) { JPopupMenu popupMenu = (JPopupMenu) target; sun.swing.MenuItemLayoutHelper.clearUsedClientProperties(popupMenu); if (popupMenu.getComponentCount() == 0) { return new Dimension(0, 0); } } // Make BoxLayout recalculate cached preferred sizes super.invalidateLayout(target); return super.preferredLayoutSize(target); } } Other Java examples (source code examples)Here is a short list of links related to this Java DefaultMenuLayout.java source code file: |
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