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16 package org.apache.myfaces.util;
17
18 import org.apache.commons.logging.Log;
19 import org.apache.commons.logging.LogFactory;
20
21 import javax.faces.application.FacesMessage;
22 import javax.faces.context.FacesContext;
23 import java.text.MessageFormat  ;
24 import java.util.Locale ;
25 import java.util.MissingResourceException ;
26 import java.util.ResourceBundle ;
27
28
46 public class MessageUtils
47 {
48 private static final Log log = LogFactory.getLog(MessageUtils.class);
49
50 private static final String DEFAULT_BUNDLE = "javax.faces.Messages";
51 private static final String DETAIL_SUFFIX = "_detail";
52
53 public static FacesMessage getMessage(FacesMessage.Severity severity,
54 String messageId,
55 Object arg1)
56 {
57 return getMessage(severity,
58 messageId,
59 new Object []{arg1},
60 FacesContext.getCurrentInstance());
61 }
62
63 public static FacesMessage getMessage(FacesMessage.Severity severity,
64 String messageId,
65 Object [] args)
66 {
67 return getMessage(severity,
68 messageId,
69 args,
70 FacesContext.getCurrentInstance());
71 }
72
73 public static FacesMessage getMessage(FacesMessage.Severity severity,
74 String messageId,
75 Object [] args,
76 FacesContext facesContext)
77 {
78 Locale locale;
79 if (facesContext.getViewRoot() != null)
80 {
81 locale = facesContext.getViewRoot().getLocale();
82 }
83 else
84 {
85 locale = facesContext.getApplication().getDefaultLocale();
86 }
87 return internalGetMessage(facesContext,
88 locale,
89 severity,
90 messageId,
91 args);
92 }
93
94 public static void addMessage(FacesMessage.Severity severity,
95 String messageId,
96 Object [] args)
97 {
98 addMessage(severity, messageId, args, null, FacesContext.getCurrentInstance());
99 }
100
101 public static void addMessage(FacesMessage.Severity severity,
102 String messageId,
103 Object [] args,
104 FacesContext facesContext)
105 {
106 addMessage(severity, messageId, args, null, facesContext);
107 }
108
109 public static void addMessage(FacesMessage.Severity severity,
110 String messageId,
111 Object [] args,
112 String forClientId)
113 {
114 addMessage(severity, messageId, args, forClientId, FacesContext.getCurrentInstance());
115 }
116
117 public static void addMessage(FacesMessage.Severity severity,
118 String messageId,
119 Object [] args,
120 String forClientId,
121 FacesContext facesContext)
122 {
123 facesContext.addMessage(forClientId,
124 getMessage(severity, messageId, args, facesContext));
125 }
126
127
128
129
130 private static FacesMessage internalGetMessage(FacesContext facesContext,
131 Locale locale,
132 FacesMessage.Severity severity,
133 String messageId,
134 Object args[])
135 {
136 ResourceBundle appBundle;
137 ResourceBundle defBundle;
138 String summary;
139 String detail;
140
141 appBundle = getApplicationBundle(facesContext, locale);
142 summary = getBundleString(appBundle, messageId);
143 if (summary != null)
144 {
145 detail = getBundleString(appBundle, messageId + DETAIL_SUFFIX);
146 }
147 else
148 {
149 defBundle = getDefaultBundle(locale);
150 summary = getBundleString(defBundle, messageId);
151 if (summary != null)
152 {
153 detail = getBundleString(defBundle, messageId + DETAIL_SUFFIX);
154 }
155 else
156 {
157 detail = getBundleString(appBundle, messageId + DETAIL_SUFFIX);
159 if (detail != null)
160 {
161 summary = null;
162 }
163 else
164 {
165 detail = getBundleString(defBundle, messageId + DETAIL_SUFFIX);
166 if (detail != null)
167 {
168 summary = null;
169 }
170 else
171 {
172 if (log.isWarnEnabled()) log.warn("No message with id " + messageId + " found in any bundle");
174 return new FacesMessage(severity, messageId, null);
175 }
176 }
177 }
178 }
179
180 if (args != null && args.length > 0)
181 {
182 MessageFormat format;
183
184 if (summary != null)
185 {
186 format = new MessageFormat (summary, locale);
187 summary = format.format(args);
188 }
189
190 if (detail != null)
191 {
192 format = new MessageFormat (detail, locale);
193 detail = format.format(args);
194 }
195 }
196
197 return new FacesMessage(severity, summary, detail);
198 }
199
200
201 private static String getBundleString(ResourceBundle bundle, String key)
202 {
203 try
204 {
205 return bundle == null ? null : bundle.getString(key);
206 }
207 catch (MissingResourceException e)
208 {
209 return null;
210 }
211 }
212
213
214 private static ResourceBundle getApplicationBundle(FacesContext facesContext, Locale locale)
215 {
216 String bundleName = facesContext.getApplication().getMessageBundle();
217 if (bundleName != null)
218 {
219 try
220 {
221 return ResourceBundle.getBundle(bundleName, locale, Thread.currentThread().getContextClassLoader());
222 }
223 catch (MissingResourceException e)
224 {
225 log.error("Resource bundle " + bundleName + " could not be found.");
226 return null;
227 }
228 }
229 else
230 {
231 return null;
232 }
233 }
234
235 private static ResourceBundle getDefaultBundle(Locale locale)
236 {
237 try
238 {
239 return ResourceBundle.getBundle(DEFAULT_BUNDLE,
240 locale,
241 FacesContext.class.getClassLoader());
242 }
243 catch (MissingResourceException e)
244 {
245 log.error("Resource bundle " + DEFAULT_BUNDLE + " could not be found.");
246 return null;
247 }
248 }
249
250 }
251 |
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