/**
    * This file Copyright (c) 2015 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.cache.browser.app;
  
  import info.magnolia.module.cache.cachekey.CacheKey;
  import info.magnolia.objectfactory.ComponentProvider;
  import info.magnolia.ui.vaadin.integration.contentconnector.AbstractContentConnector;
  import info.magnolia.ui.vaadin.integration.contentconnector.ContentConnectorDefinition;
  
  import javax.inject.Inject;
  
  import com.vaadin.data.Item;
  
  /**
   * Content connector that allows to browse cache items.
   */
  public class CacheBrowserContentConnector extends AbstractContentConnector {
  
      public static final CacheKey DEFAULT_ITEM_ID = new CacheKey() {};
  
      private CacheBrowserContainer container;
  
      @Inject
      public CacheBrowserContentConnector(ContentConnectorDefinition contentConnectorDefinition, ComponentProvider componentProvider) {
          super(contentConnectorDefinition, componentProvider);
      }
  
      @Override
      public String getItemUrlFragment(Object itemId) {
          return String.valueOf(itemId.hashCode());
      }
  
      @Override
      public Object getItemIdByUrlFragment(String urlFragment) {
          if (urlFragment.equals("/")) {
              return getDefaultItemId();
          }
          for (CacheKey cacheK : container.getItemIds()) {
              if (cacheK.hashCode() == Integer.valueOf(urlFragment)) {
                  return cacheK;
              }
          }
          return null;
      }
  
      @Override
      public Object getDefaultItemId() {
          return DEFAULT_ITEM_ID;
      }
  
      @Override
      public Item getItem(Object itemId) {
          return container.getItem(itemId);
      }
  
      @Override
      public Object getItemId(Item item) {
          if (!canHandleItem(item)) {
              return null;
          }
          return ((CacheKeyItem) item).getItemId();
      }
  
      @Override
      public boolean canHandleItem(Object itemId) {
          return itemId instanceof CacheKey;
      }
  
     public void setContainer(CacheBrowserContainer container) {
         this.container = container;
     }
 
 }