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<?php
/**
* TWizard and the relevant class definitions.
*
* @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\Web\UI\WebControls
*/
namespace Prado\Web\UI\WebControls;
use Prado\Exceptions\TInvalidDataTypeException;
/**
* TWizardStepCollection class.
*
* TWizardStepCollection represents the collection of wizard steps owned
* by a {@link TWizard}.
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @package Prado\Web\UI\WebControls
* @since 3.0
*/
class TWizardStepCollection extends \Prado\Collections\TList
{
/**
* @var TWizard
*/
private $_wizard;
/**
* Constructor.
* @param TWizard wizard that owns this collection
*/
public function __construct(TWizard $wizard)
{
$this->_wizard=$wizard;
}
/**
* Inserts an item at the specified position.
* This method overrides the parent implementation by checking if
* the item being added is a {@link TWizardStep}.
* @param integer the speicified position.
* @param mixed new item
* @throws TInvalidDataTypeException if the item being added is not TWizardStep.
*/
public function insertAt($index,$item)
{
if($item instanceof TWizardStep)
{
parent::insertAt($index,$item);
$this->_wizard->getMultiView()->getViews()->insertAt($index,$item);
$this->_wizard->addedWizardStep($item);
}
else
throw new TInvalidDataTypeException('wizardstepcollection_wizardstep_required');
}
/**
* Removes an item at the specified position.
* @param integer the index of the item to be removed.
* @return mixed the removed item.
*/
public function removeAt($index)
{
$step=parent::removeAt($index);
$this->_wizard->getMultiView()->getViews()->remove($step);
$this->_wizard->removedWizardStep($step);
return $step;
}
}
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