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19 package org.apache.myfaces.view.facelets.tag.ui;
20
21 import java.io.IOException;
22 import java.net.URL;
23 import java.util.Collection;
24
25 import javax.el.ELException;
26 import javax.el.ValueExpression;
27 import javax.el.VariableMapper;
28 import javax.faces.FacesException;
29 import javax.faces.application.ProjectStage;
30 import javax.faces.application.StateManager;
31 import javax.faces.component.UIComponent;
32 import javax.faces.event.PhaseId;
33 import javax.faces.view.facelets.FaceletContext;
34 import javax.faces.view.facelets.FaceletException;
35 import javax.faces.view.facelets.TagAttribute;
36 import javax.faces.view.facelets.TagConfig;
37 import javax.faces.view.facelets.TagHandler;
38
39 import org.apache.myfaces.buildtools.maven2.plugin.builder.annotation.JSFFaceletAttribute;
40 import org.apache.myfaces.buildtools.maven2.plugin.builder.annotation.JSFFaceletTag;
41 import org.apache.myfaces.shared.util.ClassUtils;
42 import org.apache.myfaces.view.facelets.AbstractFaceletContext;
43 import org.apache.myfaces.view.facelets.FaceletCompositionContext;
44 import org.apache.myfaces.view.facelets.el.VariableMapperWrapper;
45 import org.apache.myfaces.view.facelets.impl.TemplateContextImpl;
46 import org.apache.myfaces.view.facelets.tag.ComponentContainerHandler;
47 import org.apache.myfaces.view.facelets.tag.TagHandlerUtils;
48 import org.apache.myfaces.view.facelets.tag.jsf.ComponentSupport;
49
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61
62 @JSFFaceletTag(name="ui:include", bodyContent="JSP")
63 public final class IncludeHandler extends TagHandler implements ComponentContainerHandler
64 {
65
66 private static final String ERROR_PAGE_INCLUDE_PATH = "javax.faces.error.xhtml";
67 private static final String ERROR_FACELET = "META-INF/rsc/myfaces-dev-error-include.xhtml";
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71
72
73 @JSFFaceletAttribute(
74 className="javax.el.ValueExpression",
75 deferredValueType="java.lang.String",
76 required=true)
77 private final TagAttribute src;
78
79 private final ParamHandler[] _params;
80
81
82
83
84 public IncludeHandler(TagConfig config)
85 {
86 super(config);
87 this.src = this.getRequiredAttribute("src");
88
89 Collection<ParamHandler> params = TagHandlerUtils.findNextByType(nextHandler, ParamHandler.class);
90 if (!params.isEmpty())
91 {
92 int i = 0;
93 _params = new ParamHandler[params.size()];
94 for (ParamHandler handler : params)
95 {
96 _params[i++] = handler;
97 }
98 }
99 else
100 {
101 _params = null;
102 }
103 }
104
105
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108
109
110 @Override
111 public void apply(FaceletContext ctx, UIComponent parent) throws IOException, FacesException, FaceletException,
112 ELException
113 {
114 AbstractFaceletContext actx = (AbstractFaceletContext) ctx;
115 FaceletCompositionContext fcc = FaceletCompositionContext.getCurrentInstance(ctx);
116 String path;
117 boolean markInitialState = false;
118 String uniqueId = null;
119 if (!src.isLiteral())
120 {
121 uniqueId = actx.generateUniqueFaceletTagId(
122 fcc.startComponentUniqueIdSection(), tagId);
123 }
124 else if (_params != null)
125 {
126 uniqueId = actx.generateUniqueFaceletTagId(
127 fcc.generateUniqueComponentId(), tagId);
128 }
129 if (!src.isLiteral())
130 {
131
132
133 String restoredPath = (String) ComponentSupport.restoreInitialTagState(ctx, fcc, parent, uniqueId);
134 if (restoredPath != null)
135 {
136
137
138 if (!PhaseId.RESTORE_VIEW.equals(ctx.getFacesContext().getCurrentPhaseId()))
139 {
140 path = this.src.getValue(ctx);
141 if (path == null || path.length() == 0)
142 {
143 return;
144 }
145 if (!path.equals(restoredPath))
146 {
147 markInitialState = true;
148 }
149 }
150 else
151 {
152 path = restoredPath;
153 }
154 }
155 else
156 {
157
158 path = this.src.getValue(ctx);
159 }
160 ComponentSupport.saveInitialTagState(ctx, fcc, parent, uniqueId, path);
161 }
162 else
163 {
164 path = this.src.getValue(ctx);
165 }
166 try
167 {
168 if (path == null || path.length() == 0)
169 {
170 return;
171 }
172 VariableMapper orig = ctx.getVariableMapper();
173 ctx.setVariableMapper(new VariableMapperWrapper(orig));
174 try
175 {
176
177
178
179 URL url = null;
180 boolean oldMarkInitialState = false;
181 Boolean isBuildingInitialState = null;
182
183
184 if (ctx.getFacesContext().isProjectStage(ProjectStage.Development)
185 && ERROR_PAGE_INCLUDE_PATH.equals(path))
186 {
187 url =ClassUtils.getResource(ERROR_FACELET);
188 }
189 if (markInitialState)
190 {
191
192 oldMarkInitialState = fcc.isMarkInitialState();
193 fcc.setMarkInitialState(true);
194 isBuildingInitialState = (Boolean) ctx.getFacesContext().getAttributes().put(
195 StateManager.IS_BUILDING_INITIAL_STATE, Boolean.TRUE);
196 }
197 try
198 {
199 if (_params != null)
200 {
201
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207 String[] names = new String[_params.length];
208 ValueExpression[] values = new ValueExpression[_params.length];
209
210 for (int i = 0; i < _params.length; i++)
211 {
212 names[i] = _params[i].getName(ctx);
213 values[i] = _params[i].getValue(ctx);
214 }
215
216 actx.pushTemplateContext(new TemplateContextImpl());
217
218 for (int i = 0; i < _params.length; i++)
219 {
220 _params[i].apply(ctx, parent, names[i], values[i], uniqueId);
221 }
222 }
223 else
224 {
225 actx.pushTemplateContext(new TemplateContextImpl());
226 }
227 if (url == null)
228 {
229 ctx.includeFacelet(parent, path);
230 }
231 else
232 {
233 ctx.includeFacelet(parent, url);
234 }
235 }
236 finally
237 {
238 if (markInitialState)
239 {
240
241 if (isBuildingInitialState == null)
242 {
243 ctx.getFacesContext().getAttributes().remove(
244 StateManager.IS_BUILDING_INITIAL_STATE);
245 }
246 else
247 {
248 ctx.getFacesContext().getAttributes().put(
249 StateManager.IS_BUILDING_INITIAL_STATE, isBuildingInitialState);
250 }
251 fcc.setMarkInitialState(oldMarkInitialState);
252 }
253 actx.popTemplateContext();
254 }
255 }
256 finally
257 {
258 ctx.setVariableMapper(orig);
259 }
260 }
261 finally
262 {
263 if (!src.isLiteral())
264 {
265 fcc.endComponentUniqueIdSection();
266
267 if (fcc.isUsingPSSOnThisView() && fcc.isRefreshTransientBuildOnPSS() &&
268 !fcc.isRefreshingTransientBuild())
269 {
270
271 ComponentSupport.markComponentToRestoreFully(ctx.getFacesContext(), parent);
272 }
273 if (fcc.isDynamicComponentSection())
274 {
275 ComponentSupport.markComponentToRefreshDynamically(ctx.getFacesContext(), parent);
276 }
277 }
278 }
279 }
280 }