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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_Dom
  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  */
 
 /**
  * Results for DOM XPath query
  *
  * @package    Zend_Dom
  * @subpackage Query
  * @uses       Iterator
  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  * @version    $Id$
  */
 class Zend_Dom_Query_Result implements Iterator,Countable
 {
     /**
      * Number of results
      * @var int
      */
     protected $_count;
 
     /**
      * CSS Selector query
      * @var string
      */
     protected $_cssQuery;
 
     /**
      * @var DOMDocument
      */
     protected $_document;
 
     /**
      * @var DOMNodeList
      */
     protected $_nodeList;
 
     /**
      * Current iterator position
      * @var int
      */
     protected $_position = 0;
 
     /**
      * @var DOMXPath
      */
     protected $_xpath;
 
     /**
      * XPath query
      * @var string
      */
     protected $_xpathQuery;
 
     /**
      * Constructor
      *
      * @param  string $cssQuery
      * @param  string|array $xpathQuery
      * @param  DOMDocument $document
      * @param  DOMNodeList $nodeList
      */
     public function  __construct($cssQuery, $xpathQuery, DOMDocument $document, DOMNodeList $nodeList)
     {
         $this->_cssQuery   = $cssQuery;
         $this->_xpathQuery = $xpathQuery;
         $this->_document   = $document;
         $this->_nodeList   = $nodeList;
     }
 
     /**
      * Retrieve CSS Query
      *
      * @return string
      */
     public function getCssQuery()
     {
         return $this->_cssQuery;
     }
 
     /**
      * Retrieve XPath query
      *
      * @return string
      */
     public function getXpathQuery()
     {
         return $this->_xpathQuery;
     }
 
     /**
      * Retrieve DOMDocument
      *
      * @return DOMDocument
      */
     public function getDocument()
     {
         return $this->_document;
     }
 
     /**
      * Iterator: rewind to first element
      *
      * @return DOMNode|null
      */
     public function rewind()
     {
         $this->_position = 0;
         return $this->_nodeList->item(0);
     }
 
     /**
      * Iterator: is current position valid?
      *
      * @return bool
      */
     public function valid()
     {
         if (in_array($this->_position, range(0, $this->_nodeList->length - 1)) && $this->_nodeList->length > 0) {
             return true;
         }
         return false;
     }
 
     /**
      * Iterator: return current element
      *
      * @return DOMElement
      */
     public function current()
     {
         return $this->_nodeList->item($this->_position);
     }
 
     /**
      * Iterator: return key of current element
      *
      * @return int
      */
     public function key()
     {
         return $this->_position;
     }
 
     /**
      * Iterator: move to next element
      *
      * @return DOMNode|null
      */
     public function next()
     {
         ++$this->_position;
         return $this->_nodeList->item($this->_position);
     }
 
     /**
      * Countable: get count
      *
      * @return int
      */
     public function count()
     {
         return $this->_nodeList->length;
     }
 }