<?php

/**
 * @see Zend_Paginator_Adapter_Interface
 */
require_once 'Zend/Paginator/Adapter/Interface.php';

class App_Model_Mongo_PaginatorAdapter implements Zend_Paginator_Adapter_Interface
{

    protected $_cursor = null;


    public function __construct(MongoDB\Driver\Cursor $cursor)
    {
        $this->_cursor = $cursor;
    }

    /**
     * Returns an cursor limited to items for a page.
     *
     * @param  integer $offset Page offset
     * @param  integer $itemCountPerPage Number of items per page
     * @return MongoDB\Driver\Cursor
     */
    public function getItems($offset, $itemCountPerPage)
    {
        $cursor = $this->_cursor->skip($offset)->limit($itemCountPerPage);
        return $cursor;
    }

    /**
     * Returns the total number of rows in the cursor.
     *
     * @return integer
     */
    public function count()
    {
        return count($this->_cursor->toArray());
    }
}