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Java > Open Source Codes > com > sun > org > apache > xerces > internal > dom > DeferredElementDefinitionImpl


1 /*
2  * The Apache Software License, Version 1.1
3  *
4  *
5  * Copyright (c) 1999-2002 The Apache Software Foundation. All rights
6  * reserved.
7  *
8  * Redistribution and use in source and binary forms, with or without
9  * modification, are permitted provided that the following conditions
10  * are met:
11  *
12  * 1. Redistributions of source code must retain the above copyright
13  * notice, this list of conditions and the following disclaimer.
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15  * 2. Redistributions in binary form must reproduce the above copyright
16  * notice, this list of conditions and the following disclaimer in
17  * the documentation and/or other materials provided with the
18  * distribution.
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20  * 3. The end-user documentation included with the redistribution,
21  * if any, must include the following acknowledgment:
22  * "This product includes software developed by the
23  * Apache Software Foundation (http://www.apache.org/)."
24  * Alternately, this acknowledgment may appear in the software itself,
25  * if and wherever such third-party acknowledgments normally appear.
26  *
27  * 4. The names "Xerces" and "Apache Software Foundation" must
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29  * software without prior written permission. For written
30  * permission, please contact apache@apache.org.
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33  * nor may "Apache" appear in their name, without prior written
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36  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
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44  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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48  * ====================================================================
49  *
50  * This software consists of voluntary contributions made by many
51  * individuals on behalf of the Apache Software Foundation and was
52  * originally based on software copyright (c) 1999, International
53  * Business Machines, Inc., http://www.apache.org. For more
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55  * <http://www.apache.org/>.
56  */
57
58 package com.sun.org.apache.xerces.internal.dom;
59
60 import org.w3c.dom.Node JavaDoc;
61
62 /**
63  * NON-DOM CLASS: Describe one of the Elements (and its associated
64  * Attributes) defined in this Document Type.
65  * <p>
66  * I've included this in Level 1 purely as an anchor point for default
67  * attributes. In Level 2 it should enable the ChildRule support.
68  *
69  * @version $Id: DeferredElementDefinitionImpl.java,v 1.12 2002/01/29 01:15:07 lehors Exp $
70  */
71 public class DeferredElementDefinitionImpl
72     extends ElementDefinitionImpl
73     implements DeferredNode {
74
75     //
76 // Constants
77 //
78
79     /** Serialization version. */
80     static final long serialVersionUID = 6703238199538041591L;
81     
82     //
83 // Data
84 //
85
86     /** Node index. */
87     protected transient int fNodeIndex;
88
89     //
90 // Constructors
91 //
92
93     /**
94      * This is the deferred constructor. Only the fNodeIndex is given here.
95      * All other data, can be requested from the ownerDocument via the index.
96      */
97     DeferredElementDefinitionImpl(DeferredDocumentImpl ownerDocument,
98                                   int nodeIndex) {
99         super(ownerDocument, null);
100         
101         fNodeIndex = nodeIndex;
102         needsSyncData(true);
103         needsSyncChildren(true);
104
105     } // <init>(DeferredDocumentImpl,int)
106
107     //
108 // DeferredNode methods
109 //
110
111     /** Returns the node index. */
112     public int getNodeIndex() {
113         return fNodeIndex;
114     }
115
116     //
117 // Protected methods
118 //
119
120     /** Synchronizes the data (name and value) for fast nodes. */
121     protected void synchronizeData() {
122
123         // no need to sync in the future
124 needsSyncData(false);
125
126         // fluff data
127 DeferredDocumentImpl ownerDocument =
128             (DeferredDocumentImpl)this.ownerDocument;
129         name = ownerDocument.getNodeName(fNodeIndex);
130
131     } // synchronizeData()
132
133     /** Synchronizes the default attribute values. */
134     protected void synchronizeChildren() {
135
136         // we don't want to generate any event for this so turn them off
137 boolean orig = ownerDocument.getMutationEvents();
138         ownerDocument.setMutationEvents(false);
139
140         // attributes are now synced
141 needsSyncChildren(false);
142
143         // create attributes node map
144 DeferredDocumentImpl ownerDocument =
145             (DeferredDocumentImpl)this.ownerDocument;
146         attributes = new NamedNodeMapImpl(ownerDocument);
147
148         // Default attributes dangle as children of the element
149 // definition "node" in the internal fast table.
150 for (int nodeIndex = ownerDocument.getLastChild(fNodeIndex);
151              nodeIndex != -1;
152              nodeIndex = ownerDocument.getPrevSibling(nodeIndex)) {
153             Node JavaDoc attr = ownerDocument.getNodeObject(nodeIndex);
154             attributes.setNamedItem(attr);
155         }
156
157         // set mutation events flag back to its original value
158 ownerDocument.setMutationEvents(orig);
159
160     } // synchronizeChildren()
161
162 } // class DeferredElementDefinitionImpl
163
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