/*
    * Copyright (C) 2003-2007 eXo Platform SAS.
    *
    * This program is free software; you can redistribute it and/or
    * modify it under the terms of the GNU Affero General Public License
    * as published by the Free Software Foundation; either version 3
    * of the License, or (at your option) any later version.
    *
    * This program 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 General Public License for more details.
   *
   * You should have received a copy of the GNU General Public License
   * along with this program; if not, see<http://www.gnu.org/licenses/>.
   */
  package org.exoplatform.ecm.webui.component.explorer.sidebar;
  
  import java.util.Set;
  
  import org.exoplatform.ecm.webui.component.explorer.UIDocumentContainer;
  import org.exoplatform.ecm.webui.component.explorer.UIDocumentInfo;
  import org.exoplatform.ecm.webui.component.explorer.UIDocumentWorkspace;
  import org.exoplatform.ecm.webui.component.explorer.UIJCRExplorer;
  import org.exoplatform.ecm.webui.component.explorer.search.UISearchResult;
  import org.exoplatform.webui.config.annotation.ComponentConfig;
  import org.exoplatform.webui.config.annotation.EventConfig;
  import org.exoplatform.webui.core.UIPageIterator;
  import org.exoplatform.webui.event.Event;
  import org.exoplatform.webui.event.EventListener;
  
  /**
   * Created by The eXo Platform SAS
   * Author : Hoa Pham
   *          hoa.pham@exoplatform.com
   * Sep 26, 2007
   */
  @ComponentConfig(
      template =  "app:/groovy/webui/component/explorer/sidebar/UITreeNodePageIterator.gtmpl",
      events = @EventConfig(listeners = UITreeNodePageIterator.ShowPageActionListener.class )
  )
  public class UITreeNodePageIterator extends UIPageIterator {
    private String selectedPath_ ;
  
    public UITreeNodePageIterator() {
    }
  
    public String getSelectedPath() { return selectedPath_ ; }
    public void setSelectedPath(String path) { this.selectedPath_ = path ; }
    static  public class ShowPageActionListener extends EventListener<UITreeNodePageIterator> {
      public void execute(Event<UITreeNodePageIterator> event) throws Exception {
        UITreeNodePageIterator uiPageIterator = event.getSource() ;
        int page = Integer.parseInt(event.getRequestContext().getRequestParameter(OBJECTID)) ;
        if(uiPageIterator.getAvailablePage() < page) page = uiPageIterator.getAvailablePage();	    
        uiPageIterator.setCurrentPage(page) ;
        if(uiPageIterator.getParent() == null) return ;
        UIJCRExplorer uiExplorer = uiPageIterator.getAncestorOfType(UIJCRExplorer.class);
        event.getRequestContext().addUIComponentToUpdateByAjax(uiExplorer);
        UIDocumentWorkspace uiDocumentWorkspace = uiExplorer.findFirstComponentOfType(UIDocumentWorkspace.class) ;
        UISearchResult uiSearchResult = uiDocumentWorkspace.getChild(UISearchResult.class) ;
        if(uiSearchResult.isRendered()) return ;
        UIDocumentContainer uiDocumentContainer = uiDocumentWorkspace.getChild(UIDocumentContainer.class);
        UIDocumentInfo uiDocumentInfo = null ;
        if(uiExplorer.isShowViewFile()) {
          uiDocumentInfo = uiDocumentContainer.getChildById("UIDocumentWithTree") ;
        } else {
          Set<String> allItemByTypeFilterMap = uiExplorer.getAllItemByTypeFilterMap();
          if (allItemByTypeFilterMap.size() > 0)
            uiDocumentInfo = uiDocumentContainer.getChildById("UIDocumentWithTree");
          else
            uiDocumentInfo = uiDocumentContainer.getChildById("UIDocumentInfo");
        }
  
        if (uiDocumentInfo == null) return;
  
        String currentPath = uiExplorer.getCurrentNode().getPath();
        if(!currentPath.equalsIgnoreCase(uiPageIterator.getSelectedPath())) return ;
  
        UIPageIterator iterator = uiDocumentInfo.getContentPageIterator();
        if(iterator.getAvailablePage() >= page) iterator.setCurrentPage(page);
  
        if (uiDocumentWorkspace.isRendered() && uiDocumentContainer.isRendered() && uiDocumentInfo.isRendered()) {
          event.getRequestContext().addUIComponentToUpdateByAjax(uiDocumentInfo);
        }
      }
    }
  }