craigmcc    2004/03/07 16:42:15

  Added:       contrib/struts-faces/src/java/org/apache/struts/faces/taglib
                        LoadMessagesTag.java
  Log:
  Forgot to add one source file.
  
  Revision  Changes    Path
  1.1                  
jakarta-struts/contrib/struts-faces/src/java/org/apache/struts/faces/taglib/LoadMessagesTag.java
  
  Index: LoadMessagesTag.java
  ===================================================================
  /*
   * $Header: 
/home/cvs/jakarta-struts/contrib/struts-faces/src/java/org/apache/struts/faces/taglib/LoadMessagesTag.java,v
 1.1 2004/03/08 00:42:15 craigmcc Exp $
   * $Revision: 1.1 $
   * $Date: 2004/03/08 00:42:15 $
   *
   * ====================================================================
   *
   * The Apache Software License, Version 1.1
   *
   * Copyright (c) 2002 The Apache Software Foundation.  All rights
   * reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   *
   * 2. Redistributions 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.
   *
   * 3. The end-user documentation included with the redistribution, if
   *    any, must include the following acknowlegement:
   *       "This product includes software developed by the
   *        Apache Software Foundation (http://www.apache.org/)."
   *    Alternately, this acknowlegement may appear in the software itself,
   *    if and wherever such third-party acknowlegements normally appear.
   *
   * 4. The names "The Jakarta Project", "Struts", and "Apache Software
   *    Foundation" must not be used to endorse or promote products derived
   *    from this software without prior written permission. For written
   *    permission, please contact [EMAIL PROTECTED]
   *
   * 5. Products derived from this software may not be called "Apache"
   *    nor may "Apache" appear in their names without prior written
   *    permission of the Apache Group.
   *
   * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
   * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
   * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
   * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
   * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
   * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   * ====================================================================
   *
   * This software consists of voluntary contributions made by many
   * individuals on behalf of the Apache Software Foundation.  For more
   * information on the Apache Software Foundation, please see
   * <http://www.apache.org/>.
   *
   */
  
  package org.apache.struts.faces.taglib;
  
  
  import java.util.Locale;
  
  import javax.faces.component.UIViewRoot;
  import javax.faces.context.FacesContext;
  
  import javax.servlet.jsp.PageContext;
  import javax.servlet.jsp.tagext.TagSupport;
  
  import org.apache.struts.Globals;
  import org.apache.struts.faces.util.MessagesMap;
  import org.apache.struts.util.MessageResources;
  
  
  /**
   * <p>Tag that exposes a specified <code>MessageResources</code> instance
   * as <code>Map</code>, so that the embedded messages may be retrieved via
   * value binding expressions.</p>
   */
  
  public class LoadMessagesTag extends TagSupport {
  
  
      // ---------------------------------------------------------- Tag Attributes
  
  
      /**
       * <p>The name of the <code>MessageResources</code> to expose, or
       * <code>null</code> for the default <code>MessageResources</code>
       * for this application module.</p>
       */
      private String messages = null;
      public void setMessages(String messages) {
          this.messages = messages;
      }
  
  
      /**
       * <p>The request attribute key under which a <code>Map</code>
       * will be exposed.</p>
       */
      private String var = null;
      public void setVar(String var) {
          this.var = var;
      }
  
  
      // ------------------------------------------------------------- Tag Methods
  
  
      /**
       * <p>Expose a <code>Map</code> wrapping the specified
       * <code>MessageResources</code> instance, for the <code>Locale</code>
       * specified in the view root component of the current view.</p>
       */
      public int doStartTag() {
  
          // Acquire the Locale to be wrapped
          Locale locale =
              FacesContext.getCurrentInstance().getViewRoot().getLocale();
  
          // Acquire the MessageResources to be wrapped
          MessageResources messages = null;
          if (this.messages == null) {
              messages = (MessageResources)
                  pageContext.getAttribute(Globals.MESSAGES_KEY,
                                           PageContext.REQUEST_SCOPE);
              if (messages == null) {
                  messages = (MessageResources)
                      pageContext.getAttribute(Globals.MESSAGES_KEY,
                                               PageContext.APPLICATION_SCOPE);
              }
          } else {
              messages = (MessageResources)
                  pageContext.getAttribute(this.messages,
                                           PageContext.APPLICATION_SCOPE);
          }
  
          // Expose a Map instance under the specified request attribute key
          pageContext.setAttribute(var,
                                   new MessagesMap(messages, locale),
                                   PageContext.REQUEST_SCOPE);
  
          // Skip the body of this tag (if any)
          return (SKIP_BODY);
  
      }
  
  
      /**
       * <p>Release any resources allocated by this tag instance.</p>
       */
      public void release() {
  
          this.messages = null;
          this.var = null;
  
      }
  
  
  }
  
  
  

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