80 lines
1.7 KiB
PHP
80 lines
1.7 KiB
PHP
<?php
|
|
|
|
/*
|
|
* This file is part of the Pagerfanta package.
|
|
*
|
|
* (c) Pablo Díez <pablodip@gmail.com>
|
|
*
|
|
* For the full copyright and license information, please view the LICENSE
|
|
* file that was distributed with this source code.
|
|
*/
|
|
|
|
namespace Pagerfanta\Adapter;
|
|
|
|
/**
|
|
* NullAdapter.
|
|
*
|
|
* @author Benjamin Dulau <benjamin.dulau@anonymation.com>
|
|
*/
|
|
class NullAdapter implements AdapterInterface
|
|
{
|
|
private $nbResults;
|
|
|
|
/**
|
|
* Constructor.
|
|
*
|
|
* @param integer $nbResults Total item count.
|
|
*/
|
|
public function __construct($nbResults = 0)
|
|
{
|
|
$this->nbResults = (int) $nbResults;
|
|
}
|
|
|
|
/**
|
|
* {@inheritdoc}
|
|
*/
|
|
public function getNbResults()
|
|
{
|
|
return $this->nbResults;
|
|
}
|
|
|
|
/**
|
|
* The following methods are derived from code of the Zend Framework
|
|
* Code subject to the new BSD license (http://framework.zend.com/license/new-bsd).
|
|
*
|
|
* Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
|
|
*
|
|
* {@inheritdoc}
|
|
*/
|
|
public function getSlice($offset, $length)
|
|
{
|
|
if ($offset >= $this->nbResults) {
|
|
return array();
|
|
}
|
|
|
|
$nullArrayLength = $this->calculateNullArrayLength($offset, $length);
|
|
|
|
return $this->createNullArray($nullArrayLength);
|
|
}
|
|
|
|
private function calculateNullArrayLength($offset, $length)
|
|
{
|
|
$remainCount = $this->remainCount($offset);
|
|
if ($length > $remainCount) {
|
|
return $remainCount;
|
|
}
|
|
|
|
return $length;
|
|
}
|
|
|
|
private function remainCount($offset)
|
|
{
|
|
return $this->nbResults - $offset;
|
|
}
|
|
|
|
private function createNullArray($length)
|
|
{
|
|
return array_fill(0, $length, null);
|
|
}
|
|
}
|