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Java > Open Source Codes > org > enhydra > apache > xerces > dom > events > MutationEventImpl


1 /*
2  * The Apache Software License, Version 1.1
3  *
4  *
5  * Copyright (c) 1999 The Apache Software Foundation. All rights
6  * reserved.
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9  * modification, are permitted provided that the following conditions
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23  * Apache Software Foundation (http://www.apache.org/)."
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25  * if and wherever such third-party acknowledgments normally appear.
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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 package org.enhydra.apache.xerces.dom.events;
58
59 import org.w3c.dom.Node JavaDoc;
60 import org.w3c.dom.events.MutationEvent JavaDoc;
61
62 public class MutationEventImpl
63 extends org.enhydra.apache.xerces.dom.events.EventImpl
64 implements MutationEvent JavaDoc
65 {
66     Node JavaDoc relatedNode=null;
67     String JavaDoc prevValue=null,newValue=null,attrName=null;
68     // REVISIT: The DOM Level 2 PR has a bug: the init method should let this
69 // attribute be specified. Since it doesn't we have to give write access.
70 public short attrChange;
71     
72     // NON-DOM CONSTANTS: Storage efficiency, avoid risk of typos.
73 public static final String JavaDoc DOM_SUBTREE_MODIFIED = "DOMSubtreeModified";
74     public static final String JavaDoc DOM_NODE_INSERTED = "DOMNodeInserted";
75     public static final String JavaDoc DOM_NODE_REMOVED = "DOMNodeRemoved";
76     public static final String JavaDoc DOM_NODE_REMOVED_FROM_DOCUMENT = "DOMNodeRemovedFromDocument";
77     public static final String JavaDoc DOM_NODE_INSERTED_INTO_DOCUMENT = "DOMNodeInsertedIntoDocument";
78     public static final String JavaDoc DOM_ATTR_MODIFIED = "DOMAttrModified";
79     public static final String JavaDoc DOM_CHARACTER_DATA_MODIFIED = "DOMCharacterDataModified";
80
81     /** @return the name of the Attr which
82         changed, for DOMAttrModified events.
83         Undefined for others.
84         */
85     public String JavaDoc getAttrName()
86     {
87         return attrName;
88     }
89
90     /**
91      * <code>attrChange</code> indicates the type of change which triggered
92      * the DOMAttrModified event. The values can be <code>MODIFICATION</code>
93      * , <code>ADDITION</code>, or <code>REMOVAL</code>.
94      */
95     public short getAttrChange()
96     {
97         return attrChange;
98     }
99
100     /** @return the new string value of the Attr for DOMAttrModified events, or
101         of the CharacterData node for DOMCharDataModifed events.
102         Undefined for others.
103         */
104     public String JavaDoc getNewValue()
105     {
106         return newValue;
107     }
108
109     /** @return the previous string value of the Attr for DOMAttrModified events, or
110         of the CharacterData node for DOMCharDataModifed events.
111         Undefined for others.
112         */
113     public String JavaDoc getPrevValue()
114     {
115         return prevValue;
116     }
117
118     /** @return a Node related to this event, other than the target that the
119         node was dispatched to. For DOMNodeRemoved, it is the node which
120         was removed.
121         No other uses are currently defined.
122         */
123     public Node JavaDoc getRelatedNode()
124     {
125         return relatedNode;
126     }
127
128     /** Initialize a mutation event, or overwrite the event's current
129         settings with new values of the parameters.
130         */
131     public void initMutationEvent(String JavaDoc typeArg, boolean canBubbleArg,
132         boolean cancelableArg, Node JavaDoc relatedNodeArg, String JavaDoc prevValueArg,
133         String JavaDoc newValueArg, String JavaDoc attrNameArg, short attrChangeArg)
134     {
135         relatedNode=relatedNodeArg;
136         prevValue=prevValueArg;
137         newValue=newValueArg;
138         attrName=attrNameArg;
139         attrChange=attrChangeArg;
140         super.initEvent(typeArg,canBubbleArg,cancelableArg);
141     }
142
143 }
144
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