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


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 InputImageTag extends TagHtmlBase implements HtmlConstants
29 {
30     public static void add(HashMap JavaDoc html, HashMap JavaDoc htmlQuirks, HashMap JavaDoc xhtml)
31     {
32         html.put(INPUT_IMAGE_TAG, new HtmlRendering());
33         htmlQuirks.put(INPUT_IMAGE_TAG, new HtmlRendering());
34         xhtml.put(INPUT_IMAGE_TAG, new XhtmlRendering());
35     }
36
37     public static class State extends AbstractHtmlState
38     {
39         public String JavaDoc src;
40         public String JavaDoc value;
41         public boolean disabled;
42
43         public void clear()
44         {
45             super.clear();
46             src = null;
47             value = null;
48             disabled = false;
49         }
50     }
51
52     public void doStartTag(AbstractRenderAppender sb, AbstractTagState renderState)
53     {
54         assert(sb != null) : "Parameter 'sb' must not be null";
55         assert(renderState != null) : "Parameter 'renderState' must not be null";
56         assert(renderState instanceof State) : "Paramater 'renderState' must be an instance of InputImageTag.State";
57
58         State state = (State) renderState;
59
60         // Generate an HTML element
61 renderTag(sb, INPUT);
62         renderAttribute(sb, TYPE, INPUT_IMAGE);
63         renderAttribute(sb, ID, state.id);
64         renderAttribute(sb, CLASS, state.styleClass);
65         renderAttribute(sb, SRC, state.src);
66         renderAttribute(sb, VALUE, state.value);
67
68         renderDisabled(sb, state.disabled);
69
70
71         renderAttributes(AbstractHtmlState.ATTR_GENERAL, sb, state);
72         renderAttribute(sb, STYLE, state.style);
73         renderAttributes(AbstractHtmlState.ATTR_JAVASCRIPT, sb, state);
74
75         writeEnd(sb);
76     }
77
78     public void doEndTag(AbstractRenderAppender sb)
79     {
80     }
81
82     abstract protected void writeEnd(AbstractRenderAppender sb);
83
84     abstract protected void renderDisabled(AbstractRenderAppender sb, boolean disabled);
85
86
87     private static class HtmlRendering extends InputImageTag
88     {
89         protected void writeEnd(AbstractRenderAppender sb)
90         {
91             sb.append(">");
92         }
93
94         protected void renderDisabled(AbstractRenderAppender sb, boolean disabled)
95         {
96             if (disabled)
97                 sb.append(" disabled");
98
99         }
100
101     }
102
103     private static class XhtmlRendering extends InputImageTag
104     {
105         protected void writeEnd(AbstractRenderAppender sb)
106         {
107             sb.append(" />");
108         }
109
110         protected void renderDisabled(AbstractRenderAppender sb, boolean disabled)
111         {
112             if (disabled)
113                 renderAttribute(sb, "disabled", "disabled");
114         }
115     }
116 }
117
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