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.validator;
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: mwessendorf $)
27 * @version $Revision: 166994 $ $Date: 2004-07-01 18:12:40 -0400 (Thu, 01 Jul 2004) $
28 */
29 class _MessageUtils
30 {
31 private static final String DETAIL_SUFFIX = "_detail";
32
33 static FacesMessage getErrorMessage(FacesContext facesContext,
34 String messageId,
35 Object args[])
36 {
37 return getMessage(facesContext,
38 facesContext.getViewRoot().getLocale(),
39 FacesMessage.SEVERITY_ERROR,
40 messageId,
41 args);
42 }
43
44 static FacesMessage getMessage(FacesContext facesContext,
45 Locale locale,
46 FacesMessage.Severity severity,
47 String messageId,
48 Object args[])
49 {
50 ResourceBundle appBundle;
51 ResourceBundle defBundle;
52 String summary;
53 String detail;
54
55 appBundle = getApplicationBundle(facesContext, locale);
56 summary = getBundleString(appBundle, messageId);
57 if (summary != null)
58 {
59 detail = getBundleString(appBundle, messageId + DETAIL_SUFFIX);
60 }
61 else
62 {
63 defBundle = getDefaultBundle(facesContext, locale);
64 summary = getBundleString(defBundle, messageId);
65 if (summary != null)
66 {
67 detail = getBundleString(defBundle, messageId + DETAIL_SUFFIX);
68 }
69 else
70 {
71 //Try to find detail alone
72 detail = getBundleString(appBundle, messageId + DETAIL_SUFFIX);
73 if (detail != null)
74 {
75 summary = null;
76 }
77 else
78 {
79 detail = getBundleString(defBundle, messageId + DETAIL_SUFFIX);
80 if (detail != null)
81 {
82 summary = null;
83 }
84 else
85 {
86 //Neither detail nor summary found
87 facesContext.getExternalContext().log("No message with id " + messageId + " found in any bundle");
88 return new FacesMessage(severity, messageId, null);
89 }
90 }
91 }
92 }
93
94 if (args != null && args.length > 0)
95 {
96 MessageFormat format;
97
98 if (summary != null)
99 {
100 format = new MessageFormat(summary, locale);
101 summary = format.format(args);
102 }
103
104 if (detail != null)
105 {
106 format = new MessageFormat(detail, locale);
107 detail = format.format(args);
108 }
109 }
110
111 return new FacesMessage(severity, summary, detail);
112 }
113
114
115 private static String getBundleString(ResourceBundle bundle, String key)
116 {
117 try
118 {
119 return bundle == null ? null : bundle.getString(key);
120 }
121 catch (MissingResourceException e)
122 {
123 return null;
124 }
125 }
126
127
128 private static ResourceBundle getApplicationBundle(FacesContext facesContext, Locale locale)
129 {
130 String bundleName = facesContext.getApplication().getMessageBundle();
131 if (bundleName != null)
132 {
133 return getBundle(facesContext, locale, bundleName);
134 }
135 else
136 {
137 return null;
138 }
139 }
140
141 private static ResourceBundle getDefaultBundle(FacesContext facesContext,
142 Locale locale)
143 {
144 return getBundle(facesContext, locale, FacesMessage.FACES_MESSAGES);
145 }
146
147 private static ResourceBundle getBundle(FacesContext facesContext,
148 Locale locale,
149 String bundleName)
150 {
151 try
152 {
153 //First we try the JSF implementation class loader
154 return ResourceBundle.getBundle(bundleName,
155 locale,
156 facesContext.getClass().getClassLoader());
157 }
158 catch (MissingResourceException ignore1)
159 {
160 try
161 {
162 //Next we try the JSF API class loader
163 return ResourceBundle.getBundle(bundleName,
164 locale,
165 _MessageUtils.class.getClassLoader());
166 }
167 catch (MissingResourceException ignore2)
168 {
169 try
170 {
171 //Last resort is the context class loader
172 return ResourceBundle.getBundle(bundleName,
173 locale,
174 Thread.currentThread().getContextClassLoader());
175 }
176 catch (MissingResourceException damned)
177 {
178 facesContext.getExternalContext().log("resource bundle " + bundleName + " could not be found");
179 return null;
180 }
181 }
182 }
183 }
184
185 }
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