/**

  * This file is part of the equanda project.

  *

  * The contents of this file are subject to the Mozilla Public License Version 1.1 (the "License");

  * you may not use this file except in compliance with the License.

  * You may obtain a copy of the License at http://www.mozilla.org/MPL/

  *

  * Software distributed under the License is distributed on an "AS IS" basis, WITHOUT WARRANTY OF

  * ANY KIND, either express or implied. See the License for the specific language governing rights and

  * limitations under the License.

  *

  * Alternatively, the contents of this file may be used under the terms of

  * either the GNU General Public License Version 2 or later (the "GPL"), or

  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),

  * in which case the provisions of the GPL or the LGPL are applicable instead

  * of those above. If you wish to allow use of your version of this file only

  * under the terms of either the GPL or the LGPL, and not to allow others to

  * use your version of this file under the terms of the MPL, indicate your

  * decision by deleting the provisions above and replace them with the notice

  * and other provisions required by the GPL or the LGPL. If you do not delete

  * the provisions above, a recipient may use your version of this file under

  * the terms of any one of the MPL, the GPL or the LGPL.

  */

 package org.equanda.tapestry5.components;

 import org.apache.tapestry5.*;

 import org.apache.tapestry5.annotations.*;

 import org.apache.tapestry5.ioc.annotations.Inject;

 import org.equanda.tapestry5.base.TitleContent;

 /**

  * Tabs component

  *

  * @author <a href="mailto:joachim@progs.be">Joachim Van der Auwera</a>

  */

 @SupportsInformalParameters

 public class Tabs

     extends TitleContent

 {

     private static final int CURRENT = 0;

     @Inject

     @Path( "${tapestry.scriptaculous}/prototype.js" )

     private Asset prototype;

     @Inject

     @Path( "classpath:/org/equanda/tapestry5/resources/tabs.js" )

     private Asset script;

     @Parameter

     private Block contentAll;

     @Environmental

     private RenderSupport renderSupport;

     @Inject

     private ComponentResources resources;

     @BeginRender

     void doBeginRender( MarkupWriter writer )

     {

         renderSupport.addScriptLink( prototype, script );

     }

     public Block getContentAll()

     {

         return contentAll;

     }

     public boolean hasContentAll()

     {

         return resources.isBound( "contentAll" );

     }

     public void setContentAll( Block contentAll )

     {

         this.contentAll = contentAll;

     }

     /**

      * String index for previous tab if any

      *

      * @return index for previous tab as string or null

      */

     public String getBackward()

     {

         int index = getIndex();

         if ( index == 0 ) return null;

         return Integer.toString( index - 1 );

     }

     /**

      * String index for next tab if any

      *

      * @return index for next tab as string or null

      */

     public String getForward()

     {

         int index = getIndex() + 1;

         if ( index == getPanelCount() ) return null;

         return Integer.toString( index );

     }

     /**

      * Indication (class) of whether this is the active tab.

      *

      * @return style for active tab title

      */

     public String getActive()

     {

         if ( getIndex() == CURRENT ) return "equandaTabsActive equandaTraverseSkip";

         return "";

     }

     /**

      * display method, depending on "current" panel

      *

      * @return "block" or "none"

      */

     public String getDisplay()

     {

         if ( getIndex() == CURRENT ) return "block";

         return "none";

     }

 }