jdk/src/share/classes/javax/swing/plaf/synth/DefaultMenuLayout.java
changeset 4422 ade55a65b0f2
parent 4421 fcbbd4d49581
parent 4408 80dcc8ac5696
child 4423 4061c66ba1af
equal deleted inserted replaced
4421:fcbbd4d49581 4422:ade55a65b0f2
     1 /*
       
     2  * Copyright 2002-2008 Sun Microsystems, Inc.  All Rights Reserved.
       
     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
       
     4  *
       
     5  * This code is free software; you can redistribute it and/or modify it
       
     6  * under the terms of the GNU General Public License version 2 only, as
       
     7  * published by the Free Software Foundation.  Sun designates this
       
     8  * particular file as subject to the "Classpath" exception as provided
       
     9  * by Sun in the LICENSE file that accompanied this code.
       
    10  *
       
    11  * This code is distributed in the hope that it will be useful, but WITHOUT
       
    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
       
    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
       
    14  * version 2 for more details (a copy is included in the LICENSE file that
       
    15  * accompanied this code).
       
    16  *
       
    17  * You should have received a copy of the GNU General Public License version
       
    18  * 2 along with this work; if not, write to the Free Software Foundation,
       
    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
       
    20  *
       
    21  * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
       
    22  * CA 95054 USA or visit www.sun.com if you need additional information or
       
    23  * have any questions.
       
    24  */
       
    25 
       
    26 package javax.swing.plaf.synth;
       
    27 
       
    28 import javax.swing.*;
       
    29 import javax.swing.plaf.UIResource;
       
    30 
       
    31 import java.awt.Container;
       
    32 import java.awt.Dimension;
       
    33 
       
    34 /**
       
    35  * The default layout manager for Popup menus and menubars.  This
       
    36  * class is an extension of BoxLayout which adds the UIResource tag
       
    37  * so that plauggable L&Fs can distinguish it from user-installed
       
    38  * layout managers on menus.
       
    39  *
       
    40  * Derived from javax.swing.plaf.basic.DefaultMenuLayout
       
    41  *
       
    42  * @author Georges Saab
       
    43  */
       
    44 
       
    45 class DefaultMenuLayout extends BoxLayout implements UIResource {
       
    46     public DefaultMenuLayout(Container target, int axis) {
       
    47         super(target, axis);
       
    48     }
       
    49 
       
    50     public Dimension preferredLayoutSize(Container target) {
       
    51         if (target instanceof JPopupMenu) {
       
    52             JPopupMenu popupMenu = (JPopupMenu) target;
       
    53 
       
    54             popupMenu.putClientProperty(
       
    55                     SynthMenuItemLayoutHelper.MAX_ACC_OR_ARROW_WIDTH, null);
       
    56             sun.swing.MenuItemLayoutHelper.clearUsedClientProperties(popupMenu);
       
    57 
       
    58             if (popupMenu.getComponentCount() == 0) {
       
    59                 return new Dimension(0, 0);
       
    60             }
       
    61         }
       
    62 
       
    63         // Make BoxLayout recalculate cached preferred sizes
       
    64         super.invalidateLayout(target);
       
    65 
       
    66         return super.preferredLayoutSize(target);
       
    67     }
       
    68 }