promo_block_eh.php
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Created: Mon, Jul 28, 12:15 PM

promo_block_eh.php
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	<?php
	/**
	* @version $Id$
	* @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 PromoBlockEventHandler extends kDBEventHandler {

	/**
	* Categories are sorted using special sorting event
	*
	*/
	function mapEvents()
	{
	parent::mapEvents();

	$events_map = Array (
	'OnMassMoveUp' => 'OnChangePriority',
	'OnMassMoveDown' => 'OnChangePriority',
	);

	$this->eventMethods = array_merge($this->eventMethods, $events_map);
	}

	/**
	* Allows to override standard permission mapping
	*
	*/
	function mapPermissions()
	{
	parent::mapPermissions();

	$permissions = Array (
	'OnItemBuild' => Array ('self' => true),
	'OnSetSticky' => Array ('self' => 'view'),
	'OnRegisterView' => Array ('self' => true),
	'OnFollowLink' => Array ('self' => true),
	'OnResetCounters' => Array ('self' => 'add\|edit'),
	);

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

	/**
	* Processes OnMassMoveUp, OnMassMoveDown events
	*
	* @param kEvent $event
	*/
	function OnChangePriority(&$event)
	{
	$this->Application->SetVar('priority_prefix', $event->getPrefixSpecial());
	$event->CallSubEvent('priority:' . $event->Name);
	}

	/**
	* Apply any custom changes to list's sql query
	*
	* @param kEvent $event
	* @return void
	* @access protected
	* @see kDBEventHandler::OnListBuild()
	*/
	protected function SetCustomQuery(&$event)
	{
	parent::SetCustomQuery($event);

	if ( $this->Application->isAdminUser ) {
	return;
	}

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

	if ( $event->Special == 'home' ) {
	$object->addFilter('status_filter', '%1$s.Status = ' . STATUS_ACTIVE);
	$object->addFilter('scheduled_from_filter', '%1$s.ScheduleFromDate IS NULL OR %1$s.ScheduleFromDate <= ' . TIMENOW);
	$object->addFilter('scheduled_to_filter', '%1$s.ScheduleToDate IS NULL OR %1$s.ScheduleToDate >= ' . TIMENOW);
	}
	}

	/**
	* Set's block as sticky
	*
	* @param kEvent $event
	* @return void
	* @access protected
	*/
	protected function OnSetSticky(kEvent &$event)
	{
	$object =& $event->getObject( Array('skip_autoload' => true) );
	/* @var $object kDBItem */

	$ids = $this->StoreSelectedIDs($event);

	if ( $ids ) {
	$id = array_shift($ids);

	$sql = 'UPDATE ' . $object->TableName . '
	SET Sticky = 0';
	$this->Conn->Query($sql);

	$sql = 'UPDATE ' . $object->TableName . '
	SET Sticky = 1, Status = ' . STATUS_ACTIVE . '
	WHERE BlockId = ' . $id;
	$this->Conn->Query($sql);
	}

	$this->clearSelectedIDs($event);
	}


	/**
	* Set Required fields
	*
	* @param kEvent $event
	* @return void
	* @access protected
	*/
	protected function OnBeforeItemCreate(&$event)
	{
	parent::OnBeforeItemCreate($event);

	$this->_itemChanged($event);
	}

	/**
	* Set Required fields
	*
	* @param kEvent $event
	* @return void
	* @access protected
	*/
	protected function OnBeforeItemUpdate(&$event)
	{
	parent::OnBeforeItemUpdate($event);

	$this->_itemChanged($event);
	}

	/**
	* Schedule dates
	*
	* @param kEvent $event
	* @return void
	* @access protected
	*/
	protected function _itemChanged(kEvent &$event)
	{
	$object =& $event->getObject();
	/* @var $object kDBItem */

	$date_from = $object->GetDBField('ScheduleFromDate_date');
	$date_to = $object->GetDBField('ScheduleToDate_date');

	if ( $date_from && $date_to && $date_from >= $date_to ) {
	$object->SetError('ScheduleFromDate_date', 'wrong_date_interval');
	}

	$object->setRequired('CategoryId', $object->GetDBField('LinkType') == PromoBlockType::INTERNAL);
	$object->setRequired('ExternalLink', $object->GetDBField('LinkType') == PromoBlockType::EXTERNAL);
	}

	/**
	* Registers view of the promo block
	*
	* @param kEvent $event
	* @return void
	* @access protected
	*/
	protected function OnRegisterView(kEvent &$event)
	{
	$this->_incrementField($event, 'NumberOfViews');
	}

	/**
	* Registers click on the promo block
	*
	* @param kEvent $event
	* @return void
	* @access protected
	*/
	protected function OnFollowLink(kEvent &$event)
	{
	$object =& $event->getObject();
	/* @var $object kDBItem */

	$this->_incrementField($event, 'NumberOfClicks', false);

	if ( $object->GetDBField('LinkType') == 1 ) { // Internal
	$sql = 'SELECT NamedParentPath
	FROM ' . TABLE_PREFIX . 'Category
	WHERE CategoryId = ' . $object->GetDBField('CategoryId');
	$event->redirect = $this->Conn->GetOne($sql);

	$event->SetRedirectParam('pass', 'm');
	}
	else {
	$ext_url = $object->GetDBField('ExternalLink');
	$event->redirect = 'external:' . (preg_match('/^(http\|ftp):\\/\\/.*/', $ext_url) ? $ext_url : $this->Application->BaseURL() . $ext_url);
	}
	}

	/**
	* Increment given promo block counters
	*
	* @param kEvent $event
	* @param string $field
	* @param bool $is_ajax
	* @return void
	* @access protected
	*/
	protected function _incrementField(kEvent &$event, $field, $is_ajax = true)
	{
	if ( $is_ajax ) {
	$event->status = kEvent::erSTOP;

	if ( $this->Application->GetVar('ajax') != 'yes' ) {
	return ;
	}
	}

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

	if ( !$object->isLoaded() ) {
	echo 'FAILED';
	return ;
	}

	// don't use kDBItem::Update to support concurrent view updates from different visitors
	$sql = 'UPDATE ' . $object->TableName . '
	SET ' . $field . ' = ' . $field . ' + 1
	WHERE ' . $object->IDField . ' = ' . $object->GetID();
	$this->Conn->Query($sql);

	echo 'OK';
	}

	/**
	* Resets promo block counters
	*
	* @param kEvent $event
	* @return void
	* @access protected
	*/
	protected function OnResetCounters(kEvent &$event)
	{
	$object =& $event->getObject( Array ('skip_autoload' => true) );
	/* @var $object kDBItem */

	$ids = $this->StoreSelectedIDs($event);

	foreach ($ids as $id) {
	$object->Load($id);
	$object->SetDBField('NumberOfViews', 0);
	$object->SetDBField('NumberOfClicks', 0);
	$object->Update();
	}

	$this->clearSelectedIDs($event);
	}

	/**
	* Occurs, when config was parsed, allows to change config data dynamically
	*
	* @param kEvent $event
	* @return void
	* @access protected
	*/
	protected function OnAfterConfigRead(kEvent &$event)
	{
	parent::OnAfterConfigRead($event);

	$category_helper =& $this->Application->recallObject('CategoryHelper');
	/* @var $category_helper CategoryHelper */

	$fields = $this->Application->getUnitOption($event->Prefix, 'Fields');

	$fields['CategoryId']['options'] = $category_helper->getStructureTreeAsOptions();

	// images multilang fields
	$a_image = Array(
	'type' => 'string', 'max_len' => 255,
	'formatter' => 'kUploadFormatter', 'upload_dir' => IMAGES_PATH,
	'multiple' => 1, 'thumb_format' => 'resize:100x100',
	'file_types' => '.jpg;.gif;*.png', 'files_description' => '!la_Image_Files!',
	'required' => 1, 'not_null' => 1, 'default' => '',
	);

	// get active languages
	$sql = 'SELECT LanguageId
	FROM ' . TABLE_PREFIX . 'Language';
	$languages = $this->Conn->GetCol($sql);

	foreach ($languages AS $lang_id) {
	$fields['l' . $lang_id . '_Image'] = $a_image;
	}

	$this->Application->setUnitOption($event->Prefix, 'Fields', $fields);
	}
	}

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