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Java > Open Source Codes > org > enhydra > apache > html > dom > HTMLOptionElementImpl


1 /*
2  * The Apache Software License, Version 1.1
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4  *
5  * Copyright (c) 1999,2000 The Apache Software Foundation. All rights
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9  * modification, are permitted provided that the following conditions
10  * are met:
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13  * notice, this list of conditions and the following disclaimer.
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24  * Alternately, this acknowledgment may appear in the software itself,
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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56  */
57 package org.enhydra.apache.html.dom;
58
59
60 import org.enhydra.apache.xerces.dom.ElementImpl;
61 import org.w3c.dom.Node JavaDoc;
62 import org.w3c.dom.NodeList JavaDoc;
63 import org.w3c.dom.Text JavaDoc;
64 import org.w3c.dom.html.HTMLElement;
65 import org.w3c.dom.html.HTMLOptionElement;
66 import org.w3c.dom.html.HTMLSelectElement;
67
68
69 /**
70  * @version $Revision: 1.3 $ $Date: 2005/01/26 08:28:44 $
71  * @author <a HREF="mailto:arkin@openxml.org">Assaf Arkin</a>
72  * @see org.w3c.dom.html.HTMLOptionElement
73  * @see ElementImpl
74  */
75 public class HTMLOptionElementImpl
76     extends HTMLElementImpl
77     implements HTMLOptionElement
78 {
79     public boolean getDefaultSelected()
80     {
81         return getBinary( "selected" );
82     }
83     
84     
85     public void setDefaultSelected( boolean defaultSelected )
86     {
87         setAttribute( "selected", defaultSelected );
88     }
89
90   
91     public String JavaDoc getText()
92     {
93         Node JavaDoc child;
94         String JavaDoc text;
95         
96         // Find the Text nodes contained within this element and return their
97 // concatenated value. Required to go around comments, entities, etc.
98 child = getFirstChild();
99         text = "";
100         while ( child != null )
101         {
102             if ( child instanceof Text JavaDoc )
103                 text = text + ( (Text JavaDoc) child ).getData();
104             child = child.getNextSibling();
105         }
106         return text;
107     }
108     
109     
110     public void setText( String JavaDoc text )
111     {
112         Node JavaDoc child;
113         Node JavaDoc next;
114         
115         // Delete all the nodes and replace them with a single Text node.
116 // This is the only approach that can handle comments and other nodes.
117 child = getFirstChild();
118         while ( child != null )
119         {
120             next = child.getNextSibling();
121             removeChild( child );
122             child = next;
123         }
124         insertBefore( getOwnerDocument().createTextNode( text ), getFirstChild() );
125     }
126     
127     
128     public int getIndex()
129     {
130         Node JavaDoc parent;
131         NodeList JavaDoc options;
132         int i;
133         
134         // Locate the parent SELECT. Note that this OPTION might be inside a
135 // OPTGROUP inside the SELECT. Or it might not have a parent SELECT.
136 // Everything is possible. If no parent is found, return -1.
137 parent = getParentNode();
138         while ( parent != null && ! ( parent instanceof HTMLSelectElement ) )
139             parent = parent.getParentNode();
140         if ( parent != null )
141         {
142             // Use getElementsByTagName() which creates a snapshot of all the
143 // OPTION elements under the SELECT. Access to the returned NodeList
144 // is very fast and the snapshot solves many synchronization problems.
145 options = ( (HTMLElement) parent ).getElementsByTagName( "OPTION" );
146             for ( i = 0 ; i < options.getLength() ; ++i )
147                 if ( options.item( i ) == this )
148                     return i;
149         }
150         return -1;
151     }
152     
153     
154     public void setIndex( int index )
155     {
156         Node JavaDoc parent;
157         NodeList JavaDoc options;
158         Node JavaDoc item;
159         
160         // Locate the parent SELECT. Note that this OPTION might be inside a
161 // OPTGROUP inside the SELECT. Or it might not have a parent SELECT.
162 // Everything is possible. If no parent is found, just return.
163 parent = getParentNode();
164         while ( parent != null && ! ( parent instanceof HTMLSelectElement ) )
165             parent = parent.getParentNode();
166         if ( parent != null )
167         {
168             // Use getElementsByTagName() which creates a snapshot of all the
169 // OPTION elements under the SELECT. Access to the returned NodeList
170 // is very fast and the snapshot solves many synchronization problems.
171 // Make sure this OPTION is not replacing itself.
172 options = ( (HTMLElement) parent ).getElementsByTagName( "OPTION" );
173             if ( options.item( index ) != this )
174             {
175                 // Remove this OPTION from its parent. Place this OPTION right
176 // before indexed OPTION underneath it's direct parent (might
177 // be an OPTGROUP).
178 getParentNode().removeChild( this );
179                 item = options.item( index );
180                 item.getParentNode().insertBefore( this, item );
181             }
182         }
183     }
184   
185   
186     public boolean getDisabled()
187     {
188         return getBinary( "disabled" );
189     }
190     
191     
192     public void setDisabled( boolean disabled )
193     {
194         setAttribute( "disabled", disabled );
195     }
196
197     
198       public String JavaDoc getLabel()
199     {
200         return capitalize( getAttribute( "label" ) );
201     }
202     
203     
204     public void setLabel( String JavaDoc label )
205     {
206         setAttribute( "label", label );
207     }
208
209     
210     public boolean getSelected()
211     {
212         return getBinary( "selected" );
213     }
214   
215   
216     public void setSelected( boolean selected )
217     {
218         setAttribute( "selected", selected );
219     }
220     
221         
222     public String JavaDoc getValue()
223     {
224         return getAttribute( "value" );
225     }
226     
227     
228     public void setValue( String JavaDoc value )
229     {
230         setAttribute( "value", value );
231     }
232
233     
234     /**
235      * Constructor requires owner document.
236      *
237      * @param owner The owner HTML document
238      */
239     public HTMLOptionElementImpl( HTMLDocumentImpl owner, String JavaDoc name )
240     {
241         super( owner, name );
242     }
243
244
245 }
246
247
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