Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
Renderer |
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| 4.857142857142857;4.857 |
1 | /* | |
2 | * Licensed to the Apache Software Foundation (ASF) under one | |
3 | * or more contributor license agreements. See the NOTICE file | |
4 | * distributed with this work for additional information | |
5 | * regarding copyright ownership. The ASF licenses this file | |
6 | * to you under the Apache License, Version 2.0 (the | |
7 | * "License"); you may not use this file except in compliance | |
8 | * with the License. You may obtain a copy of the License at | |
9 | * | |
10 | * http://www.apache.org/licenses/LICENSE-2.0 | |
11 | * | |
12 | * Unless required by applicable law or agreed to in writing, | |
13 | * software distributed under the License is distributed on an | |
14 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | |
15 | * KIND, either express or implied. See the License for the | |
16 | * specific language governing permissions and limitations | |
17 | * under the License. | |
18 | */ | |
19 | package javax.faces.render; | |
20 | ||
21 | import java.io.IOException; | |
22 | ||
23 | import javax.faces.component.UIComponent; | |
24 | import javax.faces.context.FacesContext; | |
25 | import javax.faces.convert.ConverterException; | |
26 | ||
27 | /** | |
28 | * see Javadoc of <a href="http://java.sun.com/javaee/javaserverfaces/1.2/docs/api/index.html">JSF Specification</a> | |
29 | */ | |
30 | 36 | public abstract class Renderer |
31 | { | |
32 | /** | |
33 | * @since 2.2 | |
34 | */ | |
35 | public static final String PASSTHROUGH_RENDERER_LOCALNAME_KEY = "elementName"; | |
36 | ||
37 | public void decode(FacesContext context, UIComponent component) | |
38 | { | |
39 | 24 | if (context == null) |
40 | { | |
41 | 0 | throw new NullPointerException("context"); |
42 | } | |
43 | 24 | if (component == null) |
44 | { | |
45 | 0 | throw new NullPointerException("component"); |
46 | } | |
47 | 24 | } |
48 | ||
49 | /** | |
50 | * @throws IOException if an input/output error occurs while rendering | |
51 | */ | |
52 | public void encodeBegin(FacesContext context, UIComponent component) throws IOException | |
53 | { | |
54 | 0 | if (context == null) |
55 | { | |
56 | 0 | throw new NullPointerException("context"); |
57 | } | |
58 | 0 | if (component == null) |
59 | { | |
60 | 0 | throw new NullPointerException("component"); |
61 | } | |
62 | 0 | } |
63 | ||
64 | /** | |
65 | * Render all children if there are any. | |
66 | * | |
67 | * Note: this will only be called if getRendersChildren() returns true. A component which has a renderer with | |
68 | * getRendersChildren() set to true will typically contain the rendering logic for its children in this method. | |
69 | * | |
70 | * @param context | |
71 | * @param component | |
72 | * @throws IOException | |
73 | */ | |
74 | public void encodeChildren(FacesContext context, UIComponent component) throws IOException | |
75 | { | |
76 | 0 | if (context == null) |
77 | { | |
78 | 0 | throw new NullPointerException("context"); |
79 | } | |
80 | 0 | if (component == null) |
81 | { | |
82 | 0 | throw new NullPointerException("component"); |
83 | } | |
84 | ||
85 | 0 | if (component.getChildCount() > 0) |
86 | { | |
87 | 0 | for (int i = 0, childCount = component.getChildCount(); i < childCount; i++) |
88 | { | |
89 | 0 | UIComponent child = component.getChildren().get(i); |
90 | 0 | if (!child.isRendered()) |
91 | { | |
92 | 0 | continue; |
93 | } | |
94 | ||
95 | 0 | child.encodeAll(context); |
96 | } | |
97 | } | |
98 | 0 | } |
99 | ||
100 | /** | |
101 | * @throws IOException if an input/output error occurs while rendering | |
102 | */ | |
103 | public void encodeEnd(FacesContext context, UIComponent component) throws IOException | |
104 | { | |
105 | 0 | if (context == null) |
106 | { | |
107 | 0 | throw new NullPointerException("context"); |
108 | } | |
109 | 0 | if (component == null) |
110 | { | |
111 | 0 | throw new NullPointerException("component"); |
112 | } | |
113 | 0 | } |
114 | ||
115 | public String convertClientId(FacesContext context, String clientId) | |
116 | { | |
117 | 82 | if (context == null) |
118 | { | |
119 | 0 | throw new NullPointerException("context"); |
120 | } | |
121 | 82 | if (clientId == null) |
122 | { | |
123 | 0 | throw new NullPointerException("clientId"); |
124 | } | |
125 | 82 | return clientId; |
126 | } | |
127 | ||
128 | /** | |
129 | * Switch for deciding who renders the children. | |
130 | * | |
131 | * @return <b>true</b> - if the component takes care of rendering its children. In this case, encodeChildren() ought | |
132 | * to be called by the rendering controller (e.g., the rendering controller could be the method encodeAll() | |
133 | * in UIComponent). In the method encodeChildren(), the component should therefore provide all children | |
134 | * encode logic. <br/> <b>false</b> - if the component does not take care of rendering its children. In this | |
135 | * case, encodeChildren() should not be called by the rendering controller. Instead, the children-list | |
136 | * should be retrieved and the children should directly be rendered by the rendering controller one by one. | |
137 | */ | |
138 | public boolean getRendersChildren() | |
139 | { | |
140 | 0 | return false; |
141 | } | |
142 | ||
143 | public Object getConvertedValue(FacesContext context, UIComponent component, Object submittedValue) | |
144 | throws ConverterException | |
145 | { | |
146 | 0 | if (context == null) |
147 | { | |
148 | 0 | throw new NullPointerException("context"); |
149 | } | |
150 | 0 | if (component == null) |
151 | { | |
152 | 0 | throw new NullPointerException("component"); |
153 | } | |
154 | 0 | return submittedValue; |
155 | } | |
156 | ||
157 | } |