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Created: Sat, Sep 20, 1:19 PM

promo_block_group_eh.php
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	<?php
	/**
	* @version $Id: promo_block_group_eh.php 16513 2017-01-20 14:10:53Z alex $
	* @package In-Portal
	* @copyright Copyright (C) 1997 - 2011 Intechnic. All rights reserved.
	* @license GNU/GPL
	* In-Portal is Open Source software.
	* This means that this software may have been modified pursuant
	* the GNU General Public License, and as distributed it includes
	* or is derivative of works licensed under the GNU General Public License
	* or other free or open source software licenses.
	* See http://www.in-portal.org/license for copyright notices and details.
	*/

	defined('FULL_PATH') or die('restricted access!');

	class PromoBlockGroupEventHandler extends kDBEventHandler {

	/**
	* Occurs before creating item
	*
	* @param kEvent $event
	* @return void
	* @access protected
	*/
	protected function OnBeforeItemCreate(kEvent $event)
	{
	parent::OnBeforeItemCreate($event);
	$this->beforeItemChange($event);
	}

	/**
	* Occurs before updating item
	*
	* @param kEvent $event
	* @return void
	* @access protected
	*/
	protected function OnBeforeItemUpdate(kEvent $event)
	{
	parent::OnBeforeItemUpdate($event);
	$this->beforeItemChange($event);
	}

	/**
	* Occurs before updating item
	*
	* @param kEvent $event
	* @return void
	* @access private
	*/
	private function beforeItemChange($event)
	{
	/** @var kDBItem $object */
	$object = $event->getObject();

	$object->setRequired('TransitionEffectCustom', $object->GetDBField('TransitionEffect') == '-1');
	}

	/**
	* Occurs before deleting item, id of item being
	* deleted is stored as 'id' event param
	*
	* @param kEvent $event
	* @return void
	* @access protected
	*/
	protected function OnBeforeItemDelete(kEvent $event)
	{
	parent::OnBeforeItemDelete($event);

	/** @var kDBItem $object */
	$object = $event->getObject();

	$sql = 'SELECT BlockId
	FROM ' . TABLE_PREFIX . 'PromoBlocks
	WHERE PromoBlockGroupId = ' . $object->GetID();
	$block_id = $this->Conn->GetOne($sql);

	if ( $block_id ) {
	$event->MasterEvent->SetRedirectParam('grid_error', 'la_error_PromoGroupNotEmpty');
	$event->status = kEvent::erFAIL;
	}
	}

	/**
	* Deleting empty promo block group disconnects it from associated sections
	*
	* @param kEvent $event
	* @return void
	* @access protected
	*/
	protected function OnAfterItemDelete(kEvent $event)
	{
	parent::OnAfterItemDelete($event);

	$sql = 'UPDATE ' . TABLE_PREFIX . 'Categories
	SET PromoBlockGroupId = 0
	WHERE PromoBlockGroupId = ' . $event->getEventParam('id');
	$this->Conn->Query($sql);
	}

	/**
	* Set tree update flag
	*
	* @param kEvent $event
	* @return void
	* @access protected
	*/
	protected function OnSave(kEvent $event)
	{
	parent::OnSave($event);

	if ( $event->status == kEvent::erSUCCESS ) {
	$event->SetRedirectParam('refresh_tree', 1);
	}
	}

	/**
	* Set tree update flag
	*
	* @param kEvent $event
	* @return void
	* @access protected
	*/
	protected function OnMassDelete(kEvent $event)
	{
	parent::OnMassDelete($event);

	if ( $event->status == kEvent::erSUCCESS ) {
	$event->SetRedirectParam('refresh_tree', 1);
	}
	}
	}

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