1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19 package org.apache.myfaces.view.facelets.tag;
20
21 import java.io.FileNotFoundException;
22 import java.io.IOException;
23 import java.net.URL;
24 import java.util.Collection;
25 import java.util.HashMap;
26 import java.util.Map;
27
28 import javax.el.ELException;
29 import javax.el.ValueExpression;
30 import javax.faces.FacesException;
31 import javax.faces.component.UIComponent;
32 import javax.faces.view.facelets.FaceletContext;
33 import javax.faces.view.facelets.FaceletException;
34 import javax.faces.view.facelets.TagAttribute;
35 import javax.faces.view.facelets.TagConfig;
36 import javax.faces.view.facelets.TagException;
37 import javax.faces.view.facelets.TagHandler;
38
39 import org.apache.myfaces.view.facelets.AbstractFaceletContext;
40 import org.apache.myfaces.view.facelets.ELExpressionCacheMode;
41 import org.apache.myfaces.view.facelets.FaceletCompositionContext;
42 import org.apache.myfaces.view.facelets.TemplateClient;
43 import org.apache.myfaces.view.facelets.TemplateContext;
44 import org.apache.myfaces.view.facelets.el.FaceletStateValueExpression;
45 import org.apache.myfaces.view.facelets.impl.TemplateContextImpl;
46 import org.apache.myfaces.view.facelets.tag.jsf.ComponentSupport;
47 import org.apache.myfaces.view.facelets.tag.jsf.FaceletState;
48 import org.apache.myfaces.view.facelets.tag.ui.DefineHandler;
49
50
51
52
53
54
55
56
57 final class UserTagHandler extends TagHandler implements TemplateClient, ComponentContainerHandler
58 {
59
60 protected final TagAttribute[] _vars;
61
62 protected final URL _location;
63
64 protected final Map<String, DefineHandler> _handlers;
65
66
67
68
69 public UserTagHandler(TagConfig config, URL location)
70 {
71 super(config);
72 this._vars = this.tag.getAttributes().getAll();
73 this._location = location;
74
75 Collection<DefineHandler> defines = TagHandlerUtils.findNextByType(nextHandler, DefineHandler.class);
76 if (defines.isEmpty())
77 {
78 _handlers = null;
79 }
80 else
81 {
82 _handlers = new HashMap<String, DefineHandler>();
83 for (DefineHandler handler : defines)
84 {
85 _handlers.put(handler.getName(), handler);
86 }
87 }
88 }
89
90
91
92
93
94
95
96
97
98
99 @Override
100 public void apply(FaceletContext ctx, UIComponent parent) throws IOException, FacesException, FaceletException,
101 ELException
102 {
103 AbstractFaceletContext actx = (AbstractFaceletContext) ctx;
104
105 try
106 {
107 String[] names = null;
108 ValueExpression[] values = null;
109 if (this._vars.length > 0)
110 {
111 names = new String[_vars.length];
112 values = new ValueExpression[_vars.length];
113 for (int i = 0; i < _vars.length; i++)
114 {
115 names[i] = _vars[i].getLocalName();
116 values[i] = _vars[i].getValueExpression(ctx, Object.class);
117 }
118 }
119 actx.pushTemplateContext(new TemplateContextImpl());
120 actx.pushClient(this);
121 FaceletCompositionContext fcc = FaceletCompositionContext.getCurrentInstance(ctx);
122 String uniqueId = fcc.startComponentUniqueIdSection();
123 try
124 {
125 if (this._vars.length > 0)
126 {
127 if (ELExpressionCacheMode.alwaysRecompile.equals(actx.getELExpressionCacheMode()))
128 {
129 FaceletState faceletState = ComponentSupport.getFaceletState(ctx, parent, true);
130 for (int i = 0; i < this._vars.length; i++)
131 {
132
133 faceletState.putBinding(uniqueId, names[i], values[i]);
134 ValueExpression ve = new FaceletStateValueExpression(uniqueId, names[i]);
135 actx.getTemplateContext().setParameter(names[i], ve);
136 }
137 }
138 else
139 {
140 for (int i = 0; i < this._vars.length; i++)
141 {
142 ((AbstractFaceletContext) ctx).getTemplateContext().setParameter(names[i], values[i]);
143 }
144 }
145 }
146
147
148 if (!ELExpressionCacheMode.alwaysRecompile.equals(actx.getELExpressionCacheMode()))
149 {
150 actx.getTemplateContext().setAllowCacheELExpressions(false);
151 }
152 ctx.includeFacelet(parent, this._location);
153 }
154 finally
155 {
156 fcc.endComponentUniqueIdSection();
157 }
158 }
159 catch (FileNotFoundException e)
160 {
161 throw new TagException(this.tag, e.getMessage());
162 }
163 finally
164 {
165
166
167 actx.popClient(this);
168 actx.popTemplateContext();
169
170 }
171 }
172
173 @Override
174 public boolean apply(FaceletContext ctx, UIComponent parent, String name) throws IOException, FacesException,
175 FaceletException, ELException
176 {
177 if (name != null)
178 {
179 if (this._handlers == null)
180 {
181 return false;
182 }
183 DefineHandler handler = (DefineHandler) this._handlers.get(name);
184 if (handler != null)
185 {
186 AbstractFaceletContext actx = (AbstractFaceletContext) ctx;
187 TemplateContext itc = actx.popTemplateContext();
188 try
189 {
190 handler.applyDefinition(ctx, parent);
191 }
192 finally
193 {
194 actx.pushTemplateContext(itc);
195 }
196 return true;
197 }
198 else
199 {
200 return false;
201 }
202 }
203 else
204 {
205 AbstractFaceletContext actx = (AbstractFaceletContext) ctx;
206 TemplateContext itc = actx.popTemplateContext();
207 try
208 {
209 this.nextHandler.apply(ctx, parent);
210 }
211 finally
212 {
213 actx.pushTemplateContext(itc);
214 }
215 return true;
216 }
217 }
218
219 }