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<?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) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id: Sliding.php 18951 2009-11-12 16:26:19Z alexander $
*/
/**
* @see Zend_Paginator_ScrollingStyle_Interface
*/
require_once 'Zend/Paginator/ScrollingStyle/Interface.php';
/**
* A Yahoo! Search-like scrolling style. The cursor will advance to
* the middle of the range, then remain there until the user reaches
* the end of the page set, at which point it will continue on to
* the end of the range and the last page in the set.
*
* @link http://search.yahoo.com/search?p=Zend+Framework
* @category Zend
* @package Zend_Paginator
* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
class Zend_Paginator_ScrollingStyle_Sliding implements Zend_Paginator_ScrollingStyle_Interface
{
/**
* Returns an array of "local" pages given a page number and range.
*
* @param Zend_Paginator $paginator
* @param integer $pageRange (Optional) Page range
* @return array
*/
public function getPages(Zend_Paginator $paginator, $pageRange = null)
{
if ($pageRange === null) {
$pageRange = $paginator->getPageRange();
}
$pageNumber = $paginator->getCurrentPageNumber();
$pageCount = count($paginator);
if ($pageRange > $pageCount) {
$pageRange = $pageCount;
}
$delta = ceil($pageRange / 2);
if ($pageNumber - $delta > $pageCount - $pageRange) {
$lowerBound = $pageCount - $pageRange + 1;
$upperBound = $pageCount;
} else {
if ($pageNumber - $delta < 0) {
$delta = $pageNumber;
}
$offset = $pageNumber - $delta;
$lowerBound = $offset + 1;
$upperBound = $offset + $pageRange;
}
return $paginator->getPagesInRange($lowerBound, $upperBound);
}
}
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