<?php
/**
* Zend Framework (http://framework.zend.com/)
*
* @link http://github.com/zendframework/zf2 for the canonical source repository
* @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
namespace Zend\Paginator\ScrollingStyle;
use Zend\Paginator\Paginator;
/**
* 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
*/
class Sliding implements ScrollingStyleInterface
{
/**
* Returns an array of "local" pages given a page number and range.
*
* @param Paginator $paginator
* @param int $pageRange (Optional) Page range
* @return array
*/
public function getPages(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);
}
}