/*
    * Copyright (C) 2003-2009 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.wcm.webui.selector.page;
  
  import org.exoplatform.webui.application.WebuiRequestContext;
  import org.exoplatform.webui.config.annotation.ComponentConfig;
  import org.exoplatform.webui.config.annotation.ComponentConfigs;
  import org.exoplatform.webui.config.annotation.EventConfig;
  import org.exoplatform.webui.core.UIComponent;
  import org.exoplatform.webui.core.UITree;
  import org.exoplatform.webui.core.lifecycle.UIFormLifecycle;
  import org.exoplatform.webui.event.Event;
  import org.exoplatform.webui.event.EventListener;
  import org.exoplatform.webui.event.Event.Phase;
  import org.exoplatform.webui.form.UIForm;
  
  /**
   * Created by The eXo Platform SAS
   * Author : eXoPlatform
   * chuong.phan@exoplatform.com, phan.le.thanh.chuong@gmail.com
   * Jun 30, 2009
   */
  @ComponentConfigs({
          @ComponentConfig(
              lifecycle = UIFormLifecycle.class,
              template = "classpath:groovy/wcm/webui/selector/page/UIPageSelector.gtmpl",
              events = {@EventConfig(listeners = UIPageSelector.ChangeNodeActionListener.class, phase = Phase.DECODE)}
          )
      }
  )
  public class UIPageSelector extends UIForm {
  
    /** The source ui component. */
    private UIComponent sourceUIComponent ;
  
    /** The return field name. */
    private String returnFieldName ;
  
    /**
     * Instantiates a new uI page selector.
     *
     * @throws Exception the exception
     */
    public UIPageSelector() throws Exception {
      UIPageNodeSelector pageNodeSelector = addChild(UIPageNodeSelector.class, null, null);
      UITree uiTree = pageNodeSelector.getChild(UITree.class);
      uiTree.setUIRightClickPopupMenu(null);
  
      UIPageSelectorPanel pageSelectorPanel = addChild(UIPageSelectorPanel.class, null, null);
      pageSelectorPanel.setSelectedNode(pageNodeSelector.getSelectedNode().getNode());
      pageSelectorPanel.updateGrid();
    }
  
    /**
     * Gets the return field name.
     *
     * @return the return field name
     */
    public String getReturnFieldName() { return returnFieldName; }
  
    /**
     * Sets the return field name.
     *
     * @param name the new return field name
     */
    public void setReturnFieldName(String name) { this.returnFieldName = name; }
  
    /**
     * Gets the source component.
     *
     * @return the source component
     */
    public UIComponent getSourceComponent() { return sourceUIComponent; }
  
    /**
     * Sets the source component.
     *
     * @param uicomponent the uicomponent
     * @param initParams the init params
     */
    public void setSourceComponent(UIComponent uicomponent, String[] initParams) {
      sourceUIComponent = uicomponent ;
      if(initParams == null || initParams.length < 0) return ;
      for(int i = 0; i < initParams.length; i ++) {
        if(initParams[i].indexOf("returnField") > -1) {
         String[] array = initParams[i].split("=") ;
         returnFieldName = array[1] ;
         break ;
       }
       returnFieldName = initParams[0] ;
     }
   }
 
   /* (non-Javadoc)
    * @see org.exoplatform.webui.core.UIComponent#processDecode(org.exoplatform.webui.application.WebuiRequestContext)
    */
   public void processDecode(WebuiRequestContext context) throws Exception {
     super.processDecode(context);
     String action = context.getRequestParameter(UIForm.ACTION);
     Event<UIComponent> event = createEvent(action, Event.Phase.DECODE, context) ;
     if(event != null) event.broadcast() ;
   }
 
   /**
    * The listener interface for receiving changeNodeAction events.
    * The class that is interested in processing a changeNodeAction
    * event implements this interface, and the object created
    * with that class is registered with a component using the
    * component's <code>addChangeNodeActionListener</code> method. When
    * the changeNodeAction event occurs, that object's appropriate
    * method is invoked.
    */
   public static class ChangeNodeActionListener extends EventListener<UIPageSelector> {
 
     /* (non-Javadoc)
      * @see org.exoplatform.webui.event.EventListener#execute(org.exoplatform.webui.event.Event)
      */
     public void execute(Event<UIPageSelector> event) throws Exception {
       UIPageSelector pageSelector = event.getSource() ;
       UIPageNodeSelector pageNodeSelector = pageSelector.getChild(UIPageNodeSelector.class) ;
       String uri  = event.getRequestContext().getRequestParameter(OBJECTID) ;
       UITree tree = pageNodeSelector.getChild(UITree.class) ;
       if(tree.getParentSelected() == null && (uri == null || uri.length() < 1)){
         pageNodeSelector.selectNavigation(pageNodeSelector.getId(pageNodeSelector.getSelectedNavigation()));
       } else {
         pageNodeSelector.selectUserNodeByUri(uri);
       }
 
       UIPageSelectorPanel pageSelectorPanel = pageSelector.getChild(UIPageSelectorPanel.class);
       pageSelectorPanel.setSelectedNode(pageNodeSelector.getSelectedNode().getNode());
       pageSelectorPanel.updateGrid();
 
       event.getRequestContext().addUIComponentToUpdateByAjax(pageSelector) ;
     }
   }
 }