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Java > Open Source Codes > org > apache > tapestry > components > Any


1 // Copyright 2004, 2005 The Apache Software Foundation
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 // http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14
15 package org.apache.tapestry.components;
16
17 import org.apache.hivemind.ApplicationRuntimeException;
18 import org.apache.tapestry.AbstractComponent;
19 import org.apache.tapestry.IMarkupWriter;
20 import org.apache.tapestry.IRequestCycle;
21
22 /**
23  * A component that can substitute for any HTML element. [<a
24  * HREF="../../../../../ComponentReference/Any.html">Component Reference</a>]
25  *
26  * @author Howard Lewis Ship
27  */
28
29 public abstract class Any extends AbstractComponent
30 {
31     protected void renderComponent(IMarkupWriter writer, IRequestCycle cycle)
32     {
33         String JavaDoc element = getElement();
34
35         if (element == null)
36             throw new ApplicationRuntimeException(ComponentMessages.anyElementNotDefined(), this,
37                     null, null);
38
39         boolean rewinding = cycle.isRewinding();
40
41         if (!rewinding)
42         {
43             writer.begin(element);
44
45             renderInformalParameters(writer, cycle);
46         }
47
48         renderBody(writer, cycle);
49
50         if (!rewinding)
51         {
52             writer.end(element);
53         }
54
55     }
56
57     public abstract String JavaDoc getElement();
58 }
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