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Java > Open Source Codes > org > apache > cocoon > forms > formmodel > CaptchaDefinitionBuilder


1 /*
2  * Copyright 1999-2005 The Apache Software Foundation.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 package org.apache.cocoon.forms.formmodel;
17
18 import org.apache.avalon.framework.context.Context;
19 import org.apache.avalon.framework.context.ContextException;
20 import org.apache.avalon.framework.context.Contextualizable;
21 import org.apache.avalon.framework.thread.ThreadSafe;
22 import org.apache.cocoon.forms.util.DomHelper;
23 import org.w3c.dom.Element JavaDoc;
24
25 /**
26  * Builds {@link CaptchaFieldDefinition}s.
27  *
28  * @see http://www.captcha.net/
29  * @version $Id: CaptchaDefinitionBuilder.java 171293 2005-05-22 08:55:42Z sylvain $
30  */
31 public class CaptchaDefinitionBuilder extends AbstractDatatypeWidgetDefinitionBuilder implements Contextualizable, ThreadSafe {
32     
33     private Context avalonContext;
34     
35     public void contextualize(Context context) throws ContextException {
36         this.avalonContext = context;
37     }
38
39     public WidgetDefinition buildWidgetDefinition(Element JavaDoc widgetElement) throws Exception JavaDoc {
40         FieldDefinition definition = new CaptchaFieldDefinition(avalonContext);
41         setupDefinition(widgetElement, definition);
42         definition.makeImmutable();
43         return definition;
44     }
45
46     protected void setupDefinition(Element JavaDoc widgetElement, FieldDefinition definition) throws Exception JavaDoc {
47         super.setupDefinition(widgetElement, definition);
48         
49         // parse "@required"
50 boolean required = DomHelper.getAttributeAsBoolean(widgetElement, "required", false);
51         definition.setRequired(required);
52         
53         // parse "@length"
54 int length = DomHelper.getAttributeAsInteger(widgetElement, "length", 7);
55         ((CaptchaFieldDefinition) definition).setLength(length);
56     }
57 }
58
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