1 /*
2 * Copyright 2004 The Apache Software Foundation.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16 package javax.faces.component;
17
18 import javax.faces.application.FacesMessage;
19 import javax.faces.context.FacesContext;
20 import java.text.MessageFormat;
21 import java.util.Locale;
22 import java.util.MissingResourceException;
23 import java.util.ResourceBundle;
24
25 /**
26 * @author Manfred Geiler (latest modification by $Author: grantsmith $)
27 * @version $Revision: 169646 $ $Date: 2005-05-11 11:34:57 -0400 (Wed, 11 May 2005) $
28 */
29 class _MessageUtils
30 {
31 private static final String DETAIL_SUFFIX = "_detail";
32
33 static void addErrorMessage(FacesContext facesContext,
34 UIComponent component,
35 String messageId)
36 {
37 facesContext.addMessage(component.getClientId(facesContext),
38 getMessage(facesContext,
39 facesContext.getViewRoot().getLocale(),
40 FacesMessage.SEVERITY_ERROR,
41 messageId,
42 null));
43 }
44
45 static void addErrorMessage(FacesContext facesContext,
46 UIComponent component,
47 String messageId, Object[] args)
48 {
49 facesContext.addMessage(component.getClientId(facesContext),
50 getMessage(facesContext,
51 facesContext.getViewRoot().getLocale(),
52 FacesMessage.SEVERITY_ERROR,
53 messageId,
54 args));
55 }
56
57 static FacesMessage getMessage(FacesContext facesContext,
58 Locale locale,
59 FacesMessage.Severity severity,
60 String messageId,
61 Object args[])
62 {
63 ResourceBundle appBundle;
64 ResourceBundle defBundle;
65 String summary;
66 String detail;
67
68 appBundle = getApplicationBundle(facesContext, locale);
69 summary = getBundleString(appBundle, messageId);
70 if (summary != null)
71 {
72 detail = getBundleString(appBundle, messageId + DETAIL_SUFFIX);
73 }
74 else
75 {
76 defBundle = getDefaultBundle(facesContext, locale);
77 summary = getBundleString(defBundle, messageId);
78 if (summary != null)
79 {
80 detail = getBundleString(defBundle, messageId + DETAIL_SUFFIX);
81 }
82 else
83 {
84 //Try to find detail alone
85 detail = getBundleString(appBundle, messageId + DETAIL_SUFFIX);
86 if (detail != null)
87 {
88 summary = null;
89 }
90 else
91 {
92 detail = getBundleString(defBundle, messageId + DETAIL_SUFFIX);
93 if (detail != null)
94 {
95 summary = null;
96 }
97 else
98 {
99 //Neither detail nor summary found
100 facesContext.getExternalContext().log("No message with id " + messageId + " found in any bundle");
101 return new FacesMessage(severity, messageId, null);
102 }
103 }
104 }
105 }
106
107 if (args != null && args.length > 0)
108 {
109 MessageFormat format;
110
111 if (summary != null)
112 {
113 format = new MessageFormat(summary, locale);
114 summary = format.format(args);
115 }
116
117 if (detail != null)
118 {
119 format = new MessageFormat(detail, locale);
120 detail = format.format(args);
121 }
122 }
123
124 return new FacesMessage(severity, summary, detail);
125 }
126
127
128 private static String getBundleString(ResourceBundle bundle, String key)
129 {
130 try
131 {
132 return bundle == null ? null : bundle.getString(key);
133 }
134 catch (MissingResourceException e)
135 {
136 return null;
137 }
138 }
139
140
141 private static ResourceBundle getApplicationBundle(FacesContext facesContext, Locale locale)
142 {
143 String bundleName = facesContext.getApplication().getMessageBundle();
144 if (bundleName != null)
145 {
146 return getBundle(facesContext, locale, bundleName);
147 }
148 else
149 {
150 return null;
151 }
152 }
153
154 private static ResourceBundle getDefaultBundle(FacesContext facesContext,
155 Locale locale)
156 {
157 return getBundle(facesContext, locale, FacesMessage.FACES_MESSAGES);
158 }
159
160 private static ResourceBundle getBundle(FacesContext facesContext,
161 Locale locale,
162 String bundleName)
163 {
164 try
165 {
166 //First we try the JSF implementation class loader
167 return ResourceBundle.getBundle(bundleName,
168 locale,
169 facesContext.getClass().getClassLoader());
170 }
171 catch (MissingResourceException ignore1)
172 {
173 try
174 {
175 //Next we try the JSF API class loader
176 return ResourceBundle.getBundle(bundleName,
177 locale,
178 _MessageUtils.class.getClassLoader());
179 }
180 catch (MissingResourceException ignore2)
181 {
182 try
183 {
184 //Last resort is the context class loader
185 return ResourceBundle.getBundle(bundleName,
186 locale,
187 Thread.currentThread().getContextClassLoader());
188 }
189 catch (MissingResourceException damned)
190 {
191 facesContext.getExternalContext().log("resource bundle " + bundleName + " could not be found");
192 return null;
193 }
194 }
195 }
196 }
197
198 }
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