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Java > Open Source Codes > com > sun > facelets > tag > jsf > core > ConvertDateTimeHandler


1 /**
2  * Licensed under the Common Development and Distribution License,
3  * you may not use this file except in compliance with the License.
4  * You may obtain a copy of the License at
5  *
6  * http://www.sun.com/cddl/
7  *
8  * Unless required by applicable law or agreed to in writing, software
9  * distributed under the License is distributed on an "AS IS" BASIS,
10  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
11  * implied. See the License for the specific language governing
12  * permissions and limitations under the License.
13  */
14
15 package com.sun.facelets.tag.jsf.core;
16
17 import java.util.TimeZone JavaDoc;
18
19 import javax.el.ELException;
20 import javax.faces.FacesException;
21 import javax.faces.convert.Converter;
22 import javax.faces.convert.DateTimeConverter;
23
24 import com.sun.facelets.FaceletContext;
25 import com.sun.facelets.FaceletException;
26 import com.sun.facelets.tag.MetaRuleset;
27 import com.sun.facelets.tag.TagAttribute;
28 import com.sun.facelets.tag.TagAttributeException;
29 import com.sun.facelets.tag.jsf.ComponentSupport;
30 import com.sun.facelets.tag.jsf.ConvertHandler;
31 import com.sun.facelets.tag.jsf.ConverterConfig;
32
33 /**
34  * Register a DateTimeConverter instance on the UIComponent associated with the
35  * closest parent UIComponent custom action. <p/> See <a target="_new"
36  * HREF="http://java.sun.com/j2ee/javaserverfaces/1.1_01/docs/tlddocs/f/convertDateTime.html">tag
37  * documentation</a>.
38  *
39  * @author Jacob Hookom
40  * @version $Id: ConvertDateTimeHandler.java,v 1.4 2005/11/30 23:36:38 jhook Exp $
41  */
42 public final class ConvertDateTimeHandler extends ConvertHandler {
43
44     private final TagAttribute dateStyle;
45
46     private final TagAttribute locale;
47
48     private final TagAttribute pattern;
49
50     private final TagAttribute timeStyle;
51
52     private final TagAttribute timeZone;
53
54     private final TagAttribute type;
55
56     /**
57      * @param config
58      */
59     public ConvertDateTimeHandler(ConverterConfig config) {
60         super(config);
61         this.dateStyle = this.getAttribute("dateStyle");
62         this.locale = this.getAttribute("locale");
63         this.pattern = this.getAttribute("pattern");
64         this.timeStyle = this.getAttribute("timeStyle");
65         this.timeZone = this.getAttribute("timeZone");
66         this.type = this.getAttribute("type");
67     }
68
69     /**
70      * Returns a new DateTimeConverter
71      *
72      * @see DateTimeConverter
73      * @see com.sun.facelets.tag.jsf.ConvertHandler#createConverter(com.sun.facelets.FaceletContext)
74      */
75     protected Converter createConverter(FaceletContext ctx)
76             throws FacesException, ELException, FaceletException {
77         return ctx.getFacesContext().getApplication().createConverter(DateTimeConverter.CONVERTER_ID);
78
79     }
80
81     /**
82      * Implements tag spec, see taglib documentation.
83      *
84      * @see com.sun.facelets.tag.ObjectHandler#setAttributes(com.sun.facelets.FaceletContext,
85      * java.lang.Object)
86      */
87     protected void setAttributes(FaceletContext ctx, Object JavaDoc obj) {
88         DateTimeConverter c = (DateTimeConverter) obj;
89         if (this.locale != null) {
90             c.setLocale(ComponentSupport.getLocale(ctx, this.locale));
91         }
92         if (this.pattern != null) {
93             c.setPattern(this.pattern.getValue(ctx));
94         } else {
95             if (this.type != null) {
96                 c.setType(this.type.getValue(ctx));
97             }
98             if (this.dateStyle != null) {
99                 c.setDateStyle(this.dateStyle.getValue(ctx));
100             }
101             if (this.timeStyle != null) {
102                 c.setTimeStyle(this.timeStyle.getValue(ctx));
103             }
104         }
105         
106         if (this.timeZone != null) {
107             Object JavaDoc t = this.timeZone.getObject(ctx);
108             if (t instanceof TimeZone JavaDoc) {
109                 c.setTimeZone((TimeZone JavaDoc) t);
110             } else if (t instanceof String JavaDoc) {
111                 TimeZone JavaDoc tz = TimeZone.getTimeZone((String JavaDoc) t);
112                 c.setTimeZone(tz);
113             } else {
114                 throw new TagAttributeException(
115                         this.tag,
116                         this.timeZone,
117                         "Illegal TimeZone, must evaluate to either a java.util.TimeZone or String, is type: "
118                                 + t);
119             }
120         }
121     }
122
123     protected MetaRuleset createMetaRuleset(Class JavaDoc type) {
124         return super.createMetaRuleset(type).ignoreAll();
125     }
126 }
127
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