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


1 /*
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4  *
5  * Copyright (c) 1999-2002 The Apache Software Foundation. All rights
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57
58 package com.sun.org.apache.xerces.internal.dom.events;
59
60 import org.w3c.dom.Node JavaDoc;
61 import org.w3c.dom.events.MutationEvent JavaDoc;
62
63 /**
64  * @version $Id: MutationEventImpl.java,v 1.7 2002/08/09 15:18:16 neilg Exp $
65  */
66
67 public class MutationEventImpl
68 extends com.sun.org.apache.xerces.internal.dom.events.EventImpl
69 implements MutationEvent JavaDoc
70 {
71     Node JavaDoc relatedNode=null;
72     String JavaDoc prevValue=null,newValue=null,attrName=null;
73     // REVISIT: The DOM Level 2 PR has a bug: the init method should let this
74 // attribute be specified. Since it doesn't we have to give write access.
75 public short attrChange;
76     
77     // NON-DOM CONSTANTS: Storage efficiency, avoid risk of typos.
78 public static final String JavaDoc DOM_SUBTREE_MODIFIED = "DOMSubtreeModified";
79     public static final String JavaDoc DOM_NODE_INSERTED = "DOMNodeInserted";
80     public static final String JavaDoc DOM_NODE_REMOVED = "DOMNodeRemoved";
81     public static final String JavaDoc DOM_NODE_REMOVED_FROM_DOCUMENT = "DOMNodeRemovedFromDocument";
82     public static final String JavaDoc DOM_NODE_INSERTED_INTO_DOCUMENT = "DOMNodeInsertedIntoDocument";
83     public static final String JavaDoc DOM_ATTR_MODIFIED = "DOMAttrModified";
84     public static final String JavaDoc DOM_CHARACTER_DATA_MODIFIED = "DOMCharacterDataModified";
85
86     /** @return the name of the Attr which
87         changed, for DOMAttrModified events.
88         Undefined for others.
89         */
90     public String JavaDoc getAttrName()
91     {
92         return attrName;
93     }
94
95     /**
96      * <code>attrChange</code> indicates the type of change which triggered
97      * the DOMAttrModified event. The values can be <code>MODIFICATION</code>
98      * , <code>ADDITION</code>, or <code>REMOVAL</code>.
99      */
100     public short getAttrChange()
101     {
102         return attrChange;
103     }
104
105     /** @return the new string value of the Attr for DOMAttrModified events, or
106         of the CharacterData node for DOMCharDataModifed events.
107         Undefined for others.
108         */
109     public String JavaDoc getNewValue()
110     {
111         return newValue;
112     }
113
114     /** @return the previous string value of the Attr for DOMAttrModified events, or
115         of the CharacterData node for DOMCharDataModifed events.
116         Undefined for others.
117         */
118     public String JavaDoc getPrevValue()
119     {
120         return prevValue;
121     }
122
123     /** @return a Node related to this event, other than the target that the
124         node was dispatched to. For DOMNodeRemoved, it is the node which
125         was removed.
126         No other uses are currently defined.
127         */
128     public Node JavaDoc getRelatedNode()
129     {
130         return relatedNode;
131     }
132
133     /** Initialize a mutation event, or overwrite the event's current
134         settings with new values of the parameters.
135         */
136     public void initMutationEvent(String JavaDoc typeArg, boolean canBubbleArg,
137         boolean cancelableArg, Node JavaDoc relatedNodeArg, String JavaDoc prevValueArg,
138         String JavaDoc newValueArg, String JavaDoc attrNameArg, short attrChangeArg)
139     {
140         relatedNode=relatedNodeArg;
141         prevValue=prevValueArg;
142         newValue=newValueArg;
143         attrName=attrNameArg;
144         attrChange=attrChangeArg;
145         super.initEvent(typeArg,canBubbleArg,cancelableArg);
146     }
147
148 }
149
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