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Java > Open Source Codes > nextapp > echo2 > app > componentxml > propertypeer > ColorPeer


1 /*
2  * This file is part of the Echo Web Application Framework (hereinafter "Echo").
3  * Copyright (C) 2002-2005 NextApp, Inc.
4  *
5  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
6  *
7  * The contents of this file are subject to the Mozilla Public License Version
8  * 1.1 (the "License"); you may not use this file except in compliance with
9  * the License. You may obtain a copy of the License at
10  * http://www.mozilla.org/MPL/
11  *
12  * Software distributed under the License is distributed on an "AS IS" basis,
13  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
14  * for the specific language governing rights and limitations under the
15  * License.
16  *
17  * Alternatively, the contents of this file may be used under the terms of
18  * either the GNU General Public License Version 2 or later (the "GPL"), or
19  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
20  * in which case the provisions of the GPL or the LGPL are applicable instead
21  * of those above. If you wish to allow use of your version of this file only
22  * under the terms of either the GPL or the LGPL, and not to allow others to
23  * use your version of this file under the terms of the MPL, indicate your
24  * decision by deleting the provisions above and replace them with the notice
25  * and other provisions required by the GPL or the LGPL. If you do not delete
26  * the provisions above, a recipient may use your version of this file under
27  * the terms of any one of the MPL, the GPL or the LGPL.
28  */
29
30 package nextapp.echo2.app.componentxml.propertypeer;
31
32 import org.w3c.dom.Element JavaDoc;
33
34 import nextapp.echo2.app.Color;
35 import nextapp.echo2.app.componentxml.InvalidPropertyException;
36 import nextapp.echo2.app.componentxml.PropertyXmlPeer;
37
38 /**
39  * <code>PropertyXmlPeer</code> implementation for
40  * <code>nextapp.echo2.app.Color</code> properties.
41  */
42 public class ColorPeer
43 implements PropertyXmlPeer {
44     
45     /**
46      * Converts the given string value to a <code>Color</code> equivalent.
47      *
48      * @param value a string representation of an <code>Color</code>
49      * @return the <code>Color</code>
50      */
51     public static Color toColor(String JavaDoc value)
52     throws InvalidPropertyException {
53         try {
54             int colorValue = Integer.parseInt(value.substring(1), 16);
55             return new Color(colorValue);
56         } catch (IndexOutOfBoundsException JavaDoc ex) {
57             throw new InvalidPropertyException("Invalid color value: " + value, ex);
58         } catch (NumberFormatException JavaDoc ex) {
59             throw new InvalidPropertyException("Invalid color value: " + value, ex);
60         }
61     }
62     
63     /**
64      * @see nextapp.echo2.app.componentxml.PropertyXmlPeer#getValue(java.lang.ClassLoader,
65      * java.lang.Class, org.w3c.dom.Element)
66      */
67     public Object JavaDoc getValue(ClassLoader JavaDoc classLoader, Class JavaDoc objectClass, Element JavaDoc propertyElement)
68     throws InvalidPropertyException {
69         String JavaDoc value = propertyElement.getAttribute("value");
70         return toColor(value);
71     }
72 }
73
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