1 /*
   2  * Copyright (c) 1997, 2014, Oracle and/or its affiliates. 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.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package javax.swing.plaf;
  27 
  28 import java.awt.Component;
  29 import java.awt.Graphics;
  30 import java.io.Serializable;
  31 import javax.swing.Icon;
  32 import javax.swing.plaf.UIResource;
  33 
  34 /**
  35  * An Icon wrapper class which implements UIResource.  UI
  36  * classes which set icon properties should use this class
  37  * to wrap any icons specified as defaults.
  38  *
  39  * This class delegates all method invocations to the
  40  * Icon "delegate" object specified at construction.
  41  * <p>
  42  * <strong>Warning:</strong>
  43  * Serialized objects of this class will not be compatible with
  44  * future Swing releases. The current serialization support is
  45  * appropriate for short term storage or RMI between applications running
  46  * the same version of Swing.  As of 1.4, support for long term storage
  47  * of all JavaBeans
  48  * has been added to the <code>java.beans</code> package.
  49  * Please see {@link java.beans.XMLEncoder}.
  50  *
  51  * @see javax.swing.plaf.UIResource
  52  * @author Amy Fowler
  53  *
  54  */
  55 @SuppressWarnings("serial") // Same-version serialization only
  56 public class IconUIResource implements Icon, UIResource, Serializable
  57 {
  58     private Icon delegate;
  59 
  60     /**
  61      * Creates a UIResource icon object which wraps
  62      * an existing Icon instance.
  63      * @param delegate the icon being wrapped
  64      */
  65     public IconUIResource(Icon delegate) {
  66         if (delegate == null) {
  67             throw new IllegalArgumentException("null delegate icon argument");
  68         }
  69         this.delegate = delegate;
  70     }
  71 
  72     public void paintIcon(Component c, Graphics g, int x, int y) {
  73         delegate.paintIcon(c, g, x, y);
  74     }
  75 
  76     public int getIconWidth() {
  77         return delegate.getIconWidth();
  78     }
  79 
  80     public int getIconHeight() {
  81         return delegate.getIconHeight();
  82     }
  83 
  84 }