/*
 * Copyright (C) 2005-2010 Alfresco Software Limited.
 *
 * This file is part of Alfresco
 *
 * Alfresco is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Alfresco is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with Alfresco. If not, see <http://www.gnu.org/licenses/>.
 */
package org.alfresco.web.bean;

import javax.faces.context.FacesContext;

import org.alfresco.service.descriptor.DescriptorService;
import org.alfresco.web.app.Application;
import org.alfresco.web.bean.dialog.BaseDialogBean;
import org.alfresco.web.bean.repository.Repository;

/**
 * Simple backing bean used by the about page to display the version.
 * 
 * @author gavinc
 */
public class AboutBean extends BaseDialogBean
{
   private static final long serialVersionUID = -3777479360531145878L;
   
   private final static String MSG_VERSION = "version";
   private final static String MSG_CLOSE = "close";
   
   transient private DescriptorService descriptorService;
   
   /**
    * Retrieves the version of the repository.
    * 
    * @return The version string
    */
   public String getVersion()
   {
      return this.getDescriptorService().getServerDescriptor().getVersion();
   }
   
   /**
    * Retrieves the edition of the repository.
    * 
    * @return The edition
    */
   public String getEdition()
   {
      return this.getDescriptorService().getServerDescriptor().getEdition();
   }
   
   /**
    * Sets the DescriptorService.
    * 
    * @param descriptorService The DescriptorService
    */
   public void setDescriptorService(DescriptorService descriptorService)
   {
      this.descriptorService = descriptorService;
   }

   @Override
   protected String finishImpl(FacesContext context, String outcome) throws Exception
   {
      return null;
   }
   
   @Override
   public String getContainerDescription()
   {
      return Application.getMessage(FacesContext.getCurrentInstance(), MSG_VERSION) + " :" + getEdition() + " - v" + getVersion();
   }

   DescriptorService getDescriptorService()
   {
      //check for null in cluster environment  
      if (descriptorService == null)
      {
         descriptorService = Repository.getServiceRegistry(FacesContext.getCurrentInstance()).getDescriptorService();
      }
      return descriptorService;
   }
   
   @Override
   public String getCancelButtonLabel()
   {
    
      return Application.getMessage(FacesContext.getCurrentInstance(), MSG_CLOSE);
   }
   
   @Override
   protected String getDefaultCancelOutcome() 
   {
	  return "dialog:close:browse";
   }
}