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


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.FillImage;
35 import nextapp.echo2.app.Extent;
36 import nextapp.echo2.app.ImageReference;
37 import nextapp.echo2.app.componentxml.InvalidPropertyException;
38 import nextapp.echo2.app.componentxml.PropertyLoader;
39 import nextapp.echo2.app.componentxml.PropertyXmlPeer;
40 import nextapp.echo2.app.util.DomUtil;
41
42 /**
43  * <code>PropertyXmlPeer</code> implementation for
44  * <code>nextapp.echo2.app.FillImage</code> properties.
45  */
46 public class FillImagePeer
47 implements PropertyXmlPeer {
48
49     /**
50      * @see nextapp.echo2.app.componentxml.PropertyXmlPeer#getValue(java.lang.ClassLoader,
51      * java.lang.Class, org.w3c.dom.Element)
52      */
53     public Object JavaDoc getValue(ClassLoader JavaDoc classLoader, Class JavaDoc objectClass, Element JavaDoc propertyElement)
54     throws InvalidPropertyException {
55         Element JavaDoc fillImageElement = DomUtil.getChildElementByTagName(propertyElement, "fill-image");
56         if (fillImageElement == null) {
57             throw new InvalidPropertyException("Invalid FillImage property.", null);
58         }
59         
60         Extent offsetX = fillImageElement.hasAttribute("horizontal")
61                 ? ExtentPeer.toExtent(fillImageElement.getAttribute("horizontal")) : null;
62         Extent offsetY = fillImageElement.hasAttribute("vertical")
63                 ? ExtentPeer.toExtent(fillImageElement.getAttribute("vertical")) : null;
64         
65         int repeat;
66         String JavaDoc repeatString = fillImageElement.getAttribute("repeat");
67         if ("horizontal".equals(repeatString)) {
68             repeat = FillImage.REPEAT_HORIZONTAL;
69         } else if ("vertical".equals(repeatString)) {
70             repeat = FillImage.REPEAT_VERTICAL;
71         } else if ("none".equals(repeatString)) {
72             repeat = FillImage.NO_REPEAT;
73         } else {
74             repeat = FillImage.REPEAT;
75         }
76         
77         Element JavaDoc imageElement = DomUtil.getChildElementByTagName(fillImageElement, "image");
78         if (imageElement == null) {
79             throw new InvalidPropertyException("Invalid FillImage property.", null);
80         }
81         String JavaDoc imageType = imageElement.getAttribute("type");
82         PropertyLoader propertyLoader = PropertyLoader.forClassLoader(classLoader);
83         
84         Class JavaDoc propertyClass;
85         try {
86             propertyClass = Class.forName(imageType, true, classLoader);
87         } catch (ClassNotFoundException JavaDoc ex) {
88             throw new InvalidPropertyException("Invalid FillImage property (type \"" + imageType + "\" not found.", ex);
89         }
90         
91         Object JavaDoc imagePropertyValue = propertyLoader.getPropertyValue(FillImage.class, propertyClass, imageElement);
92         if (!(imagePropertyValue instanceof ImageReference)) {
93             throw new InvalidPropertyException("Invalid FillImage property (type \"" + imageType
94                     + "\" is not an ImageReference.", null);
95         }
96
97         ImageReference imageReference = (ImageReference) imagePropertyValue;
98         FillImage fillImage = new FillImage(imageReference, offsetX, offsetY, repeat);
99         
100         return fillImage;
101     }
102 }
103
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