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
20 package org.apache.myfaces.view.facelets.tag.ui;
21
22 import java.io.IOException;
23 import javax.el.ELException;
24 import javax.el.ValueExpression;
25 import javax.faces.FacesException;
26 import javax.faces.component.UIComponent;
27 import javax.faces.view.facelets.FaceletContext;
28 import javax.faces.view.facelets.FaceletException;
29 import javax.faces.view.facelets.TagAttribute;
30 import javax.faces.view.facelets.TagConfig;
31 import javax.faces.view.facelets.TagHandler;
32 import org.apache.myfaces.view.facelets.AbstractFaceletContext;
33
34 /**
35 * NOTE: This implementation is provided for compatibility reasons and
36 * it is considered faulty. It is enabled using
37 * org.apache.myfaces.STRICT_JSF_2_FACELETS_COMPATIBILITY web config param.
38 * Don't use it if EL expression caching is enabled.
39 *
40 * @author Jacob Hookom
41 * @version $Id: ParamHandler.java,v 1.6 2008/07/13 19:01:42 rlubke Exp $
42 */
43 //@JSFFaceletTag(name="ui:param")
44 public class LegacyParamHandler extends TagHandler
45 {
46
47 /**
48 * The name of the variable to pass to the included Facelet.
49 */
50 //@JSFFaceletAttribute(
51 // className="javax.el.ValueExpression",
52 // deferredValueType="java.lang.String",
53 // required=true)
54 private final TagAttribute name;
55
56 /**
57 * The literal or EL expression value to assign to the named variable.
58 */
59 //@JSFFaceletAttribute(
60 // className="javax.el.ValueExpression",
61 // deferredValueType="java.lang.String",
62 // required=true)
63 private final TagAttribute value;
64
65 /**
66 * @param config
67 */
68 public LegacyParamHandler(TagConfig config)
69 {
70 super(config);
71 this.name = this.getRequiredAttribute("name");
72 this.value = this.getRequiredAttribute("value");
73 }
74
75 /*
76 * (non-Javadoc)
77 *
78 * @see javax.faces.view.facelets.FaceletHandler#apply(javax.faces.view.facelets.FaceletContext,
79 * javax.faces.component.UIComponent)
80 */
81 @Override
82 public void apply(FaceletContext ctx, UIComponent parent) throws IOException, FacesException, FaceletException,
83 ELException
84 {
85 String nameStr = getName(ctx);
86 ValueExpression valueVE = getValue(ctx);
87 //ctx.getVariableMapper().setVariable(nameStr, valueVE);
88 apply(ctx, parent, nameStr, valueVE);
89 }
90
91 public void apply(FaceletContext ctx, UIComponent parent, String nameStr, ValueExpression valueVE)
92 throws IOException, FacesException, FaceletException, ELException
93 {
94 ctx.getVariableMapper().setVariable(nameStr, valueVE);
95 AbstractFaceletContext actx = ((AbstractFaceletContext) ctx);
96 actx.getTemplateContext().setAllowCacheELExpressions(false);
97 }
98
99 public String getName(FaceletContext ctx)
100 {
101 return this.name.getValue(ctx);
102 }
103
104 public ValueExpression getValue(FaceletContext ctx)
105 {
106 return this.value.getValueExpression(ctx, Object.class);
107 }
108 }