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<?php
/**
* TXmlElement, TXmlDocument, TXmlElementList class file
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @link http://www.pradosoft.com/
* @copyright Copyright © 2005-2014 PradoSoft
* @license http://www.pradosoft.com/license/
* @package Prado\Xml
*/
namespace Prado\Xml;
use Prado\Exceptions\TInvalidDataTypeException;
/**
* TXmlElementList class.
*
* TXmlElementList represents a collection of {@link TXmlElement}.
* You may manipulate the collection with the operations defined in {@link TList}.
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @package Prado\Xml
* @since 3.0
*/
class TXmlElementList extends \Prado\Collections\TList
{
/**
* @var TXmlElement owner of this list
*/
private $_o;
/**
* Constructor.
* @param TXmlElement owner of this list
*/
public function __construct(TXmlElement $owner)
{
$this->_o=$owner;
}
/**
* @return TXmlElement owner of this list
*/
protected function getOwner()
{
return $this->_o;
}
/**
* Inserts an item at the specified position.
* This overrides the parent implementation by performing additional
* operations for each newly added TXmlElement object.
* @param integer the specified position.
* @param mixed new item
* @throws TInvalidDataTypeException if the item to be inserted is not a TXmlElement object.
*/
public function insertAt($index,$item)
{
if($item instanceof TXmlElement)
{
parent::insertAt($index,$item);
if($item->getParent()!==null)
$item->getParent()->getElements()->remove($item);
$item->setParent($this->_o);
}
else
throw new TInvalidDataTypeException('xmlelementlist_xmlelement_required');
}
/**
* Removes an item at the specified position.
* This overrides the parent implementation by performing additional
* cleanup work when removing a TXmlElement object.
* @param integer the index of the item to be removed.
* @return mixed the removed item.
*/
public function removeAt($index)
{
$item=parent::removeAt($index);
if($item instanceof TXmlElement)
$item->setParent(null);
return $item;
}
}
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