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1
16 package org.apache.myfaces.renderkit.html.ext;
17
18 import org.apache.myfaces.component.UserRoleUtils;
19 import org.apache.myfaces.custom.checkbox.HtmlCheckbox;
20 import org.apache.myfaces.renderkit.RendererUtils;
21 import org.apache.myfaces.renderkit.html.HtmlCheckboxRendererBase;
22
23 import javax.faces.FacesException;
24 import javax.faces.component.UIComponent;
25 import javax.faces.component.UISelectMany;
26 import javax.faces.context.FacesContext;
27 import javax.faces.convert.Converter;
28 import javax.faces.model.SelectItem;
29 import java.io.IOException  ;
30 import java.util.List ;
31 import java.util.Set ;
32
33
34
64 public class HtmlCheckboxRenderer
65 extends HtmlCheckboxRendererBase
66 {
67
69 private static final String LAYOUT_SPREAD = "spread";
70
71 public void encodeEnd(FacesContext context, UIComponent component) throws IOException
72 {
73 if (context == null) throw new NullPointerException ("context");
74 if (component == null) throw new NullPointerException ("component");
75
76 if (component instanceof HtmlCheckbox)
77 {
78 renderSingleCheckbox(context, (HtmlCheckbox)component);
79 }
80 else if (component instanceof UISelectMany)
81 {
82 String layout = getLayout((UISelectMany)component);
83 if (layout != null && layout.equals(LAYOUT_SPREAD))
84 {
85 return; }
87 else
88 {
89 super.encodeEnd(context, component);
90 }
91 }
92 else
93 {
94 throw new IllegalArgumentException ("Unsupported component class " + component.getClass().getName());
95 }
96 }
97
98
99 private void renderSingleCheckbox(FacesContext facesContext, HtmlCheckbox checkbox) throws IOException
100 {
101 String forAttr = checkbox.getFor();
102 if (forAttr == null)
103 {
104 throw new IllegalStateException ("mandatory attribute 'for'");
105 }
106 int index = checkbox.getIndex();
107 if (index < 0)
108 {
109 throw new IllegalStateException ("positive index must be given");
110 }
111
112 UIComponent uiComponent = checkbox.findComponent(forAttr);
113 if (uiComponent == null)
114 {
115 throw new IllegalStateException ("Could not find component '" + forAttr + "' (calling findComponent on component '" + checkbox.getClientId(facesContext) + "')");
116 }
117 if (!(uiComponent instanceof UISelectMany))
118 {
119 throw new IllegalStateException ("UISelectMany expected");
120 }
121
122 UISelectMany uiSelectMany = (UISelectMany)uiComponent;
123 Converter converter;
124 List selectItemList = RendererUtils.getSelectItemList(uiSelectMany);
125 if (index >= selectItemList.size())
126 {
127 throw new IndexOutOfBoundsException ("index " + index + " >= " + selectItemList.size());
128 }
129
130 try
131 {
132 converter = RendererUtils.findUISelectManyConverter(facesContext, uiSelectMany);
133 }
134 catch (FacesException e)
135 {
136 converter = null;
137 }
138
139 SelectItem selectItem = (SelectItem)selectItemList.get(index);
140 Object itemValue = selectItem.getValue();
141 String itemStrValue;
142 if (converter == null)
143 {
144 itemStrValue = itemValue.toString();
145 }
146 else
147 {
148 itemStrValue = converter.getAsString(facesContext, uiSelectMany, itemValue);
149 }
150
151 Set lookupSet = RendererUtils.getSelectedValuesAsSet(facesContext, uiComponent, converter, uiSelectMany);
153
154 renderCheckbox(facesContext,
155 uiSelectMany,
156 itemStrValue,
157 selectItem.getLabel(),
158 lookupSet.contains(itemStrValue), true);
159 }
160
161
162 protected boolean isDisabled(FacesContext facesContext, UIComponent uiComponent)
163 {
164 if (!UserRoleUtils.isEnabledOnUserRole(uiComponent))
165 {
166 return false;
167 }
168 else
169 {
170 return super.isDisabled(facesContext, uiComponent);
171 }
172 }
173
174
175 public void decode(FacesContext facesContext, UIComponent uiComponent)
176 {
177 if (uiComponent instanceof HtmlCheckbox)
178 {
179 }
181 else
182 {
183 super.decode(facesContext, uiComponent);
184 }
185 }
186 }
187 |
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