/**

  * 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.MarkupWriter;

 import org.apache.tapestry5.RenderSupport;

 import org.apache.tapestry5.annotations.*;

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

 import org.apache.tapestry5.json.JSONObject;

 import org.apache.tapestry5.services.Environment;

 import java.util.List;

 /**

  * Equanda modification of {@link org.apache.tapestry5.corelib.components.GridPager}

  * 

  * @author <a href="mailto:vladimir.tkachenko@gmail.com">Vladimir Tkachenko</a>

  */

 @IncludeStylesheet( value = { "classpath:/org/equanda/tapestry5/resources/jspager.css" } )

 @IncludeJavaScriptLibrary( value = { "classpath:/org/equanda/tapestry5/resources/jspager.js" } )

 public class JSPager

 {

     /**

      * The source of the data displayed by the JSPagedLoop

      */

     @Parameter

     private List<Object> source;

     /**

      * The number of rows displayed per page.

      */

     @Parameter

     private int rowsPerPage;

     /**

      * Number of pages before and after the current page in the range. The pager always displays links for 2 * range + 1

      * pages, unless that's more than the total number of available pages.

      */

     @Parameter( "5" )

     private int range;

     // private int maxPages;

     @Environmental

     private RenderSupport renderSupport;

     @Inject

     private Environment environment;

     @BeginRender

     void render( MarkupWriter writer )

     {

         JSPagedLoop pagedLoop = environment.peek( JSPagedLoop.class );

         if ( pagedLoop != null )

         {

             /*int availableRows = source.size() - pagedLoop.getAddedRowCount();

             maxPages = ( ( availableRows - 1 ) / rowsPerPage ) + 1;

             if ( maxPages < 2 )

             {

                 return;

             }*/

             String clientId = pagedLoop.getClientId().toLowerCase();

             writer.element( "div", "class", "equanda_paged_loop_pager jspagedloop_pager_" + clientId );

             writer.end();

             JSONObject object = new JSONObject();

             object.put( "range", range );

             // object.put( "maxPages", maxPages );

             object.put( "rowsPerPage", rowsPerPage );

             object.put( "lastIndex", 0 );

             object.put( "currentPage", pagedLoop.getCurrentPage() );

             object.put( "rowCount", source.size() );

             object.put( "addedRowCount", pagedLoop.getAddedRowCount() );

             object.put( "additionalRowCount", pagedLoop.getAdditionalRowCount() );

             object.put( "currentPageFieldName", pagedLoop.getCurrentPageFieldName() );

             object.put( "addedRowFieldName", pagedLoop.getAddedRowFieldName() );

             object.put( "containerClass", "jspagedloop_pager_" + clientId );

             object.put( "rowClass", "jspagedlooprow_" + clientId );

             object.put( "addLinkClass", "jspagedloop_addlink_" + clientId );

             object.put( "addBlockClass", "jspagedloop_addblock_" + clientId );

             object.put( "name", clientId );

             renderSupport.addScript( "JSPagerConfigs.%s = %s;", clientId, object );

             renderSupport.addScript( "eqShowPage( %s, JSPagerConfigs.%s );", pagedLoop.getCurrentPage(), clientId );

             renderSupport.addScript( "checkAddLinks( JSPagerConfigs.%s );", clientId );

             // logger.info( String.format( "Config Object. %s = %s ", clientId, object ) );

         }

     }

 }