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Java > Open Source Codes > org > apache > beehive > netui > tags > rendering > InputHiddenTag


1 /*
2  * Copyright 2004 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  * $Header:$
17  */
18 package org.apache.beehive.netui.tags.rendering;
19
20 import org.apache.beehive.netui.tags.html.HtmlConstants;
21
22 import java.util.HashMap JavaDoc;
23
24 /**
25  * Body, Start Tag: required, End tag: forbidden
26  * Required href
27  */
28 abstract public class InputHiddenTag extends TagHtmlBase implements HtmlConstants
29 {
30     public static void add(HashMap JavaDoc html, HashMap JavaDoc htmlQuirks, HashMap JavaDoc xhtml)
31     {
32         html.put(INPUT_HIDDEN_TAG, new HtmlRendering());
33         htmlQuirks.put(INPUT_HIDDEN_TAG, new HtmlRendering());
34         xhtml.put(INPUT_HIDDEN_TAG, new XhtmlRendering());
35     }
36
37     public static class State extends AbstractHtmlControlState
38     {
39         public String JavaDoc value;
40
41         public void clear()
42         {
43             super.clear();
44
45             value = null;
46         }
47     }
48
49     public void doStartTag(AbstractRenderAppender sb, AbstractTagState renderState)
50     {
51         assert(sb != null) : "Parameter 'sb' must not be null";
52         assert(renderState != null) : "Parameter 'renderState' must not be null";
53         assert(renderState instanceof State) : "Paramater 'renderState' must be an instance of InputHiddenTag.State";
54
55         State state = (State) renderState;
56
57         // Generate an HTML element
58 renderTag(sb, INPUT);
59         renderAttribute(sb, TYPE, INPUT_HIDDEN);
60         renderAttribute(sb, ID, state.id);
61         renderAttribute(sb, NAME, state.name);
62         renderAttribute(sb, VALUE, state.value);
63
64         renderAttributes(AbstractHtmlState.ATTR_GENERAL, sb, state);
65         renderAttribute(sb, STYLE, state.style);
66         renderAttributes(AbstractHtmlState.ATTR_JAVASCRIPT, sb, state);
67         writeEnd(sb);
68     }
69
70     public void doEndTag(AbstractRenderAppender sb)
71     {
72     }
73
74     abstract protected void writeEnd(AbstractRenderAppender sb);
75
76     private static class HtmlRendering extends InputHiddenTag
77     {
78         protected void writeEnd(AbstractRenderAppender sb)
79         {
80             sb.append(">");
81         }
82     }
83
84     private static class XhtmlRendering extends InputHiddenTag
85     {
86         protected void writeEnd(AbstractRenderAppender sb)
87         {
88             sb.append(" />");
89         }
90     }
91 }
92
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