|
1
16 package org.apache.myfaces.renderkit.html.ext;
17
18 import org.apache.myfaces.component.UserRoleUtils;
19 import org.apache.myfaces.custom.radio.HtmlRadio;
20 import org.apache.myfaces.renderkit.RendererUtils;
21 import org.apache.myfaces.renderkit.html.HTML;
22 import org.apache.myfaces.renderkit.html.HtmlRadioRendererBase;
23
24 import javax.faces.FacesException;
25 import javax.faces.component.UIComponent;
26 import javax.faces.component.UISelectOne;
27 import javax.faces.context.FacesContext;
28 import javax.faces.context.ResponseWriter;
29 import javax.faces.convert.Converter;
30 import javax.faces.model.SelectItem;
31 import java.io.IOException  ;
32 import java.util.List ;
33
34
35
68 public class HtmlRadioRenderer
69 extends HtmlRadioRendererBase
70 {
71
73 private static final String LAYOUT_SPREAD = "spread";
74
75 public void encodeEnd(FacesContext context, UIComponent component) throws IOException
76 {
77 if (context == null) throw new NullPointerException ("context");
78 if (component == null) throw new NullPointerException ("component");
79
80 if (component instanceof HtmlRadio)
81 {
82 renderRadio(context, (HtmlRadio)component);
83 }
84 else if (component instanceof UISelectOne)
85 {
86 String layout = getLayout(component);
87 if (layout != null && layout.equals(LAYOUT_SPREAD))
88 {
89 return; }
91 else
92 {
93 super.encodeEnd(context, component);
94 }
95 }
96 else
97 {
98 throw new IllegalArgumentException ("Unsupported component class " + component.getClass().getName());
99 }
100 }
101
102
103 private void renderRadio(FacesContext facesContext, HtmlRadio radio) throws IOException
104 {
105 String forAttr = radio.getFor();
106 if (forAttr == null)
107 {
108 throw new IllegalStateException ("mandatory attribute 'for'");
109 }
110 int index = radio.getIndex();
111 if (index < 0)
112 {
113 throw new IllegalStateException ("positive index must be given");
114 }
115
116 UIComponent uiComponent = radio.findComponent(forAttr);
117 if (uiComponent == null)
118 {
119 throw new IllegalStateException ("Could not find component '" + forAttr + "' (calling findComponent on component '" + radio.getClientId(facesContext) + "')");
120 }
121 if (!(uiComponent instanceof UISelectOne))
122 {
123 throw new IllegalStateException ("UISelectOne expected");
124 }
125
126 UISelectOne uiSelectOne = (UISelectOne)uiComponent;
127 Converter converter;
128 List selectItemList = RendererUtils.getSelectItemList(uiSelectOne);
129 if (index >= selectItemList.size())
130 {
131 throw new IndexOutOfBoundsException ("index " + index + " >= " + selectItemList.size());
132 }
133
134 try
135 {
136 converter = RendererUtils.findUIOutputConverter(facesContext, uiSelectOne);
137 }
138 catch (FacesException e)
139 {
140 converter = null;
141 }
142
143 Object currentValue = uiSelectOne.getValue();
144 SelectItem selectItem = (SelectItem)selectItemList.get(index);
145 Object itemValue = selectItem.getValue();
146 String itemStrValue;
147 if (converter == null)
148 {
149 itemStrValue = itemValue.toString();
150 }
151 else
152 {
153 itemStrValue = converter.getAsString(facesContext, uiSelectOne, itemValue);
154 }
155 ResponseWriter writer = facesContext.getResponseWriter();
156
157 writer.startElement(HTML.LABEL_ELEM, uiSelectOne);
158
159 renderRadio(facesContext,
160 uiSelectOne,
161 itemStrValue,
162 selectItem.getLabel(),
163 currentValue == null && itemValue == null ||
164 currentValue != null && currentValue.equals(itemValue), false);
165 writer.endElement(HTML.LABEL_ELEM);
166 }
167
168
169 protected boolean isDisabled(FacesContext facesContext, UIComponent uiComponent)
170 {
171 if (!UserRoleUtils.isEnabledOnUserRole(uiComponent))
172 {
173 return false;
174 }
175 else
176 {
177 return super.isDisabled(facesContext, uiComponent);
178 }
179 }
180
181
182 public void decode(FacesContext facesContext, UIComponent uiComponent)
183 {
184 if (uiComponent instanceof HtmlRadio)
185 {
186 }
188 else
189 {
190 super.decode(facesContext, uiComponent);
191 }
192 }
193
194 }
195 |
Popular Tags |
Java API By Example, From Geeks To Geeks.