/*
* $Id$
*/
/*
* Copyright 2004 Sun Microsystems, Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistribution in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* Neither the name of Sun Microsystems, Inc. or the names of
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* This software is provided "AS IS," without a warranty of any
* kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND
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* FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY
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* DAMAGES OR LIABILITIES SUFFERED BY LICENSEE AS A RESULT OF OR
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*/
package org.apache.cocoon.faces.samples.carstore;
import javax.faces.application.Application;
import javax.faces.application.FacesMessage;
import javax.faces.context.FacesContext;
import java.text.MessageFormat;
import java.util.Locale;
import java.util.MissingResourceException;
import java.util.ResourceBundle;
/**
* <p>supported filters: <code>package</code> and
* <code>protection</code>.</p>
*/
public class MessageFactory extends Object {
//
// Protected Constants
//
//
// Class Variables
//
//
// Instance Variables
//
// Attribute Instance Variables
// Relationship Instance Variables
//
// Constructors and Initializers
//
private MessageFactory() {
}
//
// Class methods
//
//
// General Methods
//
public static String substituteParams(Locale locale, String msgtext, Object params[]) {
String localizedStr = null;
if (params == null || msgtext == null) {
return msgtext;
}
StringBuffer b = new StringBuffer(100);
MessageFormat mf = new MessageFormat(msgtext);
if (locale != null) {
mf.setLocale(locale);
b.append(mf.format(params));
localizedStr = b.toString();
}
return localizedStr;
}
/**
* This version of getMessage() is used in the RI for localizing RI
* specific messages.
*/
public static FacesMessage getMessage(String messageId, Object params[]) {
Locale locale = null;
FacesContext context = FacesContext.getCurrentInstance();
// context.getViewRoot() may not have been initialized at this point.
if (context != null && context.getViewRoot() != null) {
locale = context.getViewRoot().getLocale();
if (locale == null) {
locale = Locale.getDefault();
}
} else {
locale = Locale.getDefault();
}
return getMessage(locale, messageId, params);
}
public static FacesMessage getMessage(Locale locale, String messageId,
Object params[]) {
FacesMessage result = null;
String
summary = null,
detail = null,
bundleName = null;
ResourceBundle bundle = null;
// see if we have a user-provided bundle
if (null != (bundleName = getApplication().getMessageBundle())) {
if (null !=
(bundle =
ResourceBundle.getBundle(bundleName, locale,
getCurrentLoader(bundleName)))) {
// see if we have a hit
try {
summary = bundle.getString(messageId);
} catch (MissingResourceException e) {
}
}
}
// we couldn't find a summary in the user-provided bundle
if (null == summary) {
// see if we have a summary in the app provided bundle
bundle = ResourceBundle.getBundle(FacesMessage.FACES_MESSAGES,
locale,
getCurrentLoader(bundleName));
if (null == bundle) {
throw new NullPointerException();
}
// see if we have a hit
try {
summary = bundle.getString(messageId);
} catch (MissingResourceException e) {
}
}
// we couldn't find a summary anywhere! Return null
if (null == summary) {
return null;
}
// At this point, we have a summary and a bundle.
if (null == summary || null == bundle) {
throw new NullPointerException();
}
summary = substituteParams(locale, summary, params);
try {
detail = substituteParams(locale,
bundle.getString(messageId + "_detail"),
params);
} catch (MissingResourceException e) {
}
return (new FacesMessage(summary, detail));
}
//
// Methods from MessageFactory
//
public static FacesMessage getMessage(FacesContext context, String messageId) {
return getMessage(context, messageId, null);
}
public static FacesMessage getMessage(FacesContext context, String messageId,
Object params[]) {
if (context == null || messageId == null) {
throw new NullPointerException(
"One or more parameters could be null");
}
Locale locale = null;
// viewRoot may not have been initialized at this point.
if (context != null && context.getViewRoot() != null) {
locale = context.getViewRoot().getLocale();
} else {
locale = Locale.getDefault();
}
if (null == locale) {
throw new NullPointerException();
}
FacesMessage message = getMessage(locale, messageId, params);
if (message != null) {
return message;
}
locale = Locale.getDefault();
return (getMessage(locale, messageId, params));
}
public static FacesMessage getMessage(FacesContext context, String messageId,
Object param0) {
return getMessage(context, messageId, new Object[]{param0});
}
public static FacesMessage getMessage(FacesContext context, String messageId,
Object param0, Object param1) {
return getMessage(context, messageId, new Object[]{param0, param1});
}
public static FacesMessage getMessage(FacesContext context, String messageId,
Object param0, Object param1,
Object param2) {
return getMessage(context, messageId,
new Object[]{param0, param1, param2});
}
public static FacesMessage getMessage(FacesContext context, String messageId,
Object param0, Object param1,
Object param2, Object param3) {
return getMessage(context, messageId,
new Object[]{param0, param1, param2, param3});
}
protected static Application getApplication() {
return (FacesContext.getCurrentInstance().getApplication());
}
protected static ClassLoader getCurrentLoader(Object fallbackClass) {
ClassLoader loader =
Thread.currentThread().getContextClassLoader();
if (loader == null) {
loader = fallbackClass.getClass().getClassLoader();
}
return loader;
}
} // end of class MessageFactory