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Created: Wed, Oct 1, 7:06 PM

country_state_eh.php
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	<?php
	/**
	* @version $Id: country_state_eh.php 16513 2017-01-20 14:10:53Z alex $
	* @package In-Portal
	* @copyright Copyright (C) 1997 - 2010 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 CountryStateEventHandler extends kDBEventHandler {

	/**
	* Allows to override standard permission mapping
	*
	* @return void
	* @access protected
	* @see kEventHandler::$permMapping
	*/
	protected function mapPermissions()
	{
	parent::mapPermissions();

	$permissions = Array (
	'OnGetStatesJSON' => Array ('self' => true),
	);

	$this->permMapping = array_merge($this->permMapping, $permissions);
	}

	/**
	* Applies edit picker filters
	*
	* @param kEvent $event
	* @return void
	* @access protected
	* @see kDBEventHandler::OnListBuild()
	*/
	protected function SetCustomQuery(kEvent $event)
	{
	parent::SetCustomQuery($event);

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

	if ( ($event->Special == 'selected') \|\| ($event->Special == 'available') ) {
	/** @var EditPickerHelper $edit_picker_helper */
	$edit_picker_helper = $this->Application->recallObject('EditPickerHelper');

	$edit_picker_helper->applyFilter($event, 'Countries');

	// only countries
	$object->addFilter('type_filter', '%1$s.Type = ' . DESTINATION_TYPE_COUNTRY);
	}
	}

	/**
	* Makes sure, that state country is always specified
	*
	* @param kEvent $event
	* @return void
	* @access protected
	*/
	protected function OnBeforeItemCreate(kEvent $event)
	{
	parent::OnBeforeItemCreate($event);

	$this->_setRequired($event);
	}

	/**
	* Makes sure, that state country is always specified
	*
	* @param kEvent $event
	* @return void
	* @access protected
	*/
	protected function OnBeforeItemUpdate(kEvent $event)
	{
	parent::OnBeforeItemUpdate($event);

	$this->_setRequired($event);
	}

	/**
	* Makes sure, that state country is always specified
	*
	* @param kEvent $event
	*/
	function _setRequired($event)
	{
	/** @var kDBItem $object */
	$object = $event->getObject();

	$field_options = $object->GetFieldOptions('IsoCode');

	if ($object->GetDBField('Type') == DESTINATION_TYPE_STATE) {
	$object->setRequired('StateCountryId');
	$field_options['unique'] = Array ('Type', 'StateCountryId');
	}
	else {
	$object->setRequired('StateCountryId', false);
	$field_options['unique'] = Array ('Type');
	}

	$object->SetFieldOptions('IsoCode', $field_options);
	}

	/**
	* Don't allow to delete countries, that have states
	*
	* @param kEvent $event
	* @return void
	* @access protected
	*/
	protected function OnBeforeItemDelete(kEvent $event)
	{
	parent::OnBeforeItemDelete($event);

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

	/** @var kCountryStatesHelper $cs_helper */
	$cs_helper = $this->Application->recallObject('CountryStatesHelper');

	if ( $cs_helper->CountryHasStates($object->GetDBField('IsoCode')) ) {
	$event->status = kEvent::erFAIL;
	return;
	}
	}

	/**
	* Returns given country states in JSON format
	*
	* @param kEvent $event
	* @return void
	* @access protected
	*/
	protected function OnGetStatesJSON(kEvent $event)
	{
	$event->status = kEvent::erSTOP;

	/** @var kCountryStatesHelper $cs_helper */
	$cs_helper = $this->Application->recallObject('CountryStatesHelper');

	$states = $cs_helper->getStates( (string)$this->Application->GetVar('country_iso') );
	echo json_encode($states);
	}
	}

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