<?php

/**

 * Zend Framework

 *

 * LICENSE

 *

 * This source file is subject to the new BSD license that is bundled

 * with this package in the file LICENSE.txt.

 * It is also available through the world-wide-web at this URL:

 * http://framework.zend.com/license/new-bsd

 * If you did not receive a copy of the license and are unable to

 * obtain it through the world-wide-web, please send an email

 * to license@zend.com so we can send you a copy immediately.

 *

 * @category   Zend

 * @package    Zend_Paginator

 * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)

 * @license    http://framework.zend.com/license/new-bsd     New BSD License

 * @version    $Id: Elastic.php 20096 2010-01-06 02:05:09Z bkarwin $

 */

/**

 * @see Zend_Paginator_ScrollingStyle_Sliding

 */

require_once 'Zend/Paginator/ScrollingStyle/Sliding.php';

/**

 * A Google-like scrolling style.  Incrementally expands the range to about

 * twice the given page range, then behaves like a slider.  See the example

 * link.

 *

 * @link       http://www.google.com/search?q=Zend+Framework

 * @category   Zend

 * @package    Zend_Paginator

 * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)

 * @license    http://framework.zend.com/license/new-bsd     New BSD License

 */

class Zend_Paginator_ScrollingStyle_Elastic extends Zend_Paginator_ScrollingStyle_Sliding

{

    /**

     * Returns an array of "local" pages given a page number and range.

     *

     * @param  Zend_Paginator $paginator

     * @param  integer $pageRange Unused

     * @return array

     */

    public function getPages(Zend_Paginator $paginator, $pageRange = null)

    {

        $pageRange  = $paginator->getPageRange();

        $pageNumber = $paginator->getCurrentPageNumber();

        $originalPageRange = $pageRange;

        $pageRange         = $pageRange * 2 - 1;

        if ($originalPageRange + $pageNumber - 1 < $pageRange) {

            $pageRange = $originalPageRange + $pageNumber - 1;

        } else if ($originalPageRange + $pageNumber - 1 > count($paginator)) {

            $pageRange = $originalPageRange + count($paginator) - $pageNumber;

        }

        return parent::getPages($paginator, $pageRange);

    }

}