/**
    * This file Copyright (c) 2003-2011 Magnolia International
    * Ltd.  (http://www.magnolia-cms.com). All rights reserved.
    *
    *
    * This file is dual-licensed under both the Magnolia
    * Network Agreement and the GNU General Public License.
    * You may elect to use one or the other of these licenses.
    *
   * This file is distributed in the hope that it will be
   * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the
   * implied warranty of MERCHANTABILITY or FITNESS FOR A
   * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT.
   * Redistribution, except as permitted by whichever of the GPL
   * or MNA you select, is prohibited.
   *
   * 1. For the GPL license (GPL), you can redistribute and/or
   * modify this file under the terms of the GNU General
   * Public License, Version 3, as published by the Free Software
   * Foundation.  You should have received a copy of the GNU
   * General Public License, Version 3 along with this program;
   * if not, write to the Free Software Foundation, Inc., 51
   * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
   *
   * 2. For the Magnolia Network Agreement (MNA), this file
   * and the accompanying materials are made available under the
   * terms of the MNA which accompanies this distribution, and
   * is available at http://www.magnolia-cms.com/mna.html
   *
   * Any modifications to this file must keep this entire header
   * intact.
   *
   */
  package info.magnolia.module.admininterface;
  
  import info.magnolia.cms.core.Content;
  import info.magnolia.cms.gui.dialog.Dialog;
  import info.magnolia.objectfactory.Components;
  import info.magnolia.registry.RegistryMap;
  
  import java.util.List;
  import java.util.Set;
  
  import javax.inject.Singleton;
  import javax.jcr.RepositoryException;
  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpServletResponse;
  
  
  /**
   * Manages all the dialog handlers.
   */
  @Singleton
  public class DialogHandlerManager {
  
      private final RegistryMap<String, DialogHandlerProvider> registry = new RegistryMap<String, DialogHandlerProvider>() {
  
          @Override
          protected String keyFromValue(DialogHandlerProvider value) {
              return value.getId();
          }
      };
  
      public void register(DialogHandlerProvider provider) {
          registry.put(provider.getId(), provider);
      }
  
      public void unregister(String id) {
          registry.remove(id);
      }
  
      public Set<String> unregisterAndRegister(Set<String> registeredIds, List<DialogHandlerProvider> providers) {
          return this.registry.removeAndPutAll(registeredIds, providers);
      }
  
      /**
       * @deprecated since 4.3.2, is obsolete since fix for MAGNOLIA-2907
       */
      @Deprecated
      public Content getDialogConfigNode(String id) {
          DialogHandlerProvider provider = registry.get(id);
          if (provider == null) {
              throw new InvalidDialogHandlerException(id, registry.keySet().toString());
          }
          return provider.getDialogConfigNode();
      }
  
      public DialogMVCHandler getDialogHandler(String id, HttpServletRequest request, HttpServletResponse response) {
          DialogHandlerProvider provider = registry.get(id);
          if (provider == null) {
              throw new InvalidDialogHandlerException(id, registry.keySet().toString());
          }
          return provider.getDialogHandler(request, response);
      }
  
      /**
       * Caution: use this method with care, as it creates an Dialog instance having ServletRequest
       * and -Response as well as StorageNode being null.
       */
     public Dialog getDialog(String id) throws RepositoryException {
         DialogHandlerProvider provider = registry.get(id);
         if (provider == null) {
             throw new InvalidDialogHandlerException(id, registry.keySet().toString());
         }
         return provider.getDialog();
     }
 
     /**
      * @return Returns the instance.
      */
     public static DialogHandlerManager getInstance() {
         return Components.getSingleton(DialogHandlerManager.class);
     }
 
 }