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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_Ldap
  * @subpackage Node
  * @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    $Id$
  */
 
 /**
  * @see Zend_Ldap_Node
  */
 // require_once 'Zend/Ldap/Node.php';
 
 /**
  * Zend_Ldap_Node_ChildrenIterator provides an iterator to a collection of children nodes.
  *
  * @category   Zend
  * @package    Zend_Ldap
  * @subpackage Node
  * @copyright  Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
  * @license    http://framework.zend.com/license/new-bsd     New BSD License
  */
 class Zend_Ldap_Node_ChildrenIterator implements Iterator, Countable, RecursiveIterator, ArrayAccess
 {
     /**
      * An array of Zend_Ldap_Node objects
      *
      * @var array
      */
     private $_data;
 
     /**
      * Constructor.
      *
      * @param  array $data
      * @return void
      */
     public function __construct(array $data)
     {
         $this->_data = $data;
     }
 
     /**
      * Returns the number of child nodes.
      * Implements Countable
      *
      * @return int
      */
     public function count()
     {
         return count($this->_data);
     }
 
     /**
      * Return the current child.
      * Implements Iterator
      *
      * @return Zend_Ldap_Node
      */
     public function current()
     {
         return current($this->_data);
     }
 
     /**
      * Return the child'd RDN.
      * Implements Iterator
      *
      * @return string
      */
     public function key()
     {
         return key($this->_data);
     }
 
     /**
      * Move forward to next child.
      * Implements Iterator
      */
     public function next()
     {
         next($this->_data);
     }
 
     /**
      * Rewind the Iterator to the first child.
      * Implements Iterator
      */
     public function rewind()
     {
         reset($this->_data);
     }
 
     /**
      * Check if there is a current child
      * after calls to rewind() or next().
      * Implements Iterator
      *
      * @return boolean
      */
     public function valid()
     {
         return (current($this->_data)!==false);
     }
 
     /**
      * Checks if current node has children.
      * Returns whether the current element has children.
      *
      * @return boolean
      */
     public function hasChildren()
     {
         if ($this->current() instanceof Zend_Ldap_Node) {
             return $this->current()->hasChildren();
         } else {
             return false;
         }
     }
 
     /**
      * Returns the children for the current node.
      *
      * @return Zend_Ldap_Node_ChildrenIterator
      */
     public function getChildren()
     {
         if ($this->current() instanceof Zend_Ldap_Node) {
             return $this->current()->getChildren();
         } else {
             return null;
         }
     }
 
     /**
      * Returns a child with a given RDN.
      * Implements ArrayAccess.
      *
      * @param  string $rdn
      * @return Zend_Ldap_node
      */
     public function offsetGet($rdn)
     {
         if ($this->offsetExists($rdn)) {
             return $this->_data[$rdn];
         } else {
             return null;
         }
     }
 
     /**
      * Checks whether a given rdn exists.
      * Implements ArrayAccess.
      *
      * @param  string $rdn
      * @return boolean
      */
     public function offsetExists($rdn)
     {
         return (array_key_exists($rdn, $this->_data));
     }
 
     /**
      * Does nothing.
      * Implements ArrayAccess.
      *
      * @param  string $name
      * @return null
      */
     public function offsetUnset($name) { }
 
     /**
      * Does nothing.
      * Implements ArrayAccess.
      *
      * @param  string $name
      * @param  mixed $value
      * @return null
      */
     public function offsetSet($name, $value) { }
 
     /**
      * Get all children as an array
      *
      * @return array
      */
     public function toArray()
     {
         $data = array();
         foreach ($this as $rdn => $node) {
             $data[$rdn] = $node;
         }
         return $data;
     }
 }