cat_event_handler.php
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Created: Sat, Feb 1, 5:37 AM

cat_event_handler.php
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	<?php
	/**
	* @version $Id: cat_event_handler.php 13289 2010-03-23 20:59:40Z alex $
	* @package In-Portal
	* @copyright Copyright (C) 1997 - 2009 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 kCatDBEventHandler extends kDBEventHandler {

	/**
	* Allows to override standart permission mapping
	*
	*/
	function mapPermissions()
	{
	parent::mapPermissions();
	$permissions = Array(
	'OnSaveSettings' => Array ('self' => 'add\|edit\|advanced:import'),
	'OnResetSettings' => Array ('self' => 'add\|edit\|advanced:import'),
	'OnBeforeDeleteOriginal' => Array ('self' => 'edit\|advanced:approve'),

	'OnCopy' => Array ('self' => true),
	'OnDownloadFile' => Array ('self' => 'view'),
	'OnCancelAction' => Array ('self' => true),
	'OnItemBuild' => Array ('self' => true),
	'OnMakeVote' => Array ('self' => true),
	);

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

	/**
	* Load item if id is available
	*
	* @param kEvent $event
	*/
	function LoadItem(&$event)
	{
	$object =& $event->getObject();
	$id = $this->getPassedID($event);
	if ($object->Load($id)) {
	$actions =& $this->Application->recallObject('kActions');
	$actions->Set($event->Prefix_Special.'_id', $object->GetID() );

	$use_pending_editing = $this->Application->getUnitOption($event->Prefix, 'UsePendingEditing');
	if ($use_pending_editing && $event->Special != 'original') {
	$this->Application->SetVar($event->Prefix.'.original_id', $object->GetDBField('OrgId'));
	}
	}
	else {
	$object->setID($id);
	}
	}

	/**
	* Checks permissions of user
	*
	* @param kEvent $event
	*/
	function CheckPermission(&$event)
	{
	if (!$this->Application->isAdmin) {
	if ($event->Name == 'OnSetSortingDirect') {
	// allow sorting on front event without view permission
	return true;
	}
	}

	if ($event->Name == 'OnExport') {
	// save category_id before doing export
	$this->Application->LinkVar('m_cat_id');
	}

	if (in_array($event->Name, $this->_getMassPermissionEvents())) {
	$items = $this->_getPermissionCheckInfo($event);

	$perm_helper =& $this->Application->recallObject('PermissionsHelper');
	/* @var $perm_helper kPermissionsHelper */

	if (($event->Name == 'OnSave') && array_key_exists(0, $items)) {
	// adding new item (ID = 0)
	$perm_value = $perm_helper->AddCheckPermission($items[0]['CategoryId'], $event->Prefix) > 0;
	}
	else {
	// leave only items, that can be edited
	$ids = Array ();
	$check_method = in_array($event->Name, Array ('OnMassDelete', 'OnCut')) ? 'DeleteCheckPermission' : 'ModifyCheckPermission';
	foreach ($items as $item_id => $item_data) {
	if ($perm_helper->$check_method($item_data['CreatedById'], $item_data['CategoryId'], $event->Prefix) > 0) {
	$ids[] = $item_id;
	}
	}

	if (!$ids) {
	// no items left for editing -> no permission
	return $perm_helper->finalizePermissionCheck($event, false);
	}

	$perm_value = true;
	$event->setEventParam('ids', $ids); // will be used later by "kDBEventHandler::StoreSelectedIDs" method
	}

	return $perm_helper->finalizePermissionCheck($event, $perm_value);
	}

	$export_events = Array ('OnSaveSettings', 'OnResetSettings', 'OnExportBegin');
	if (in_array($event->Name, $export_events)) {
	// when import settings before selecting target import category
	return $this->Application->CheckPermission('in-portal:main_import.view');
	}

	if ($event->Name == 'OnProcessSelected') {
	if ($this->Application->RecallVar('dst_field') == 'ImportCategory') {
	// when selecting target import category
	return $this->Application->CheckPermission('in-portal:main_import.view');
	}
	}

	return parent::CheckPermission($event);
	}

	/**
	* Returns events, that require item-based (not just event-name based) permission check
	*
	* @return Array
	*/
	function _getMassPermissionEvents()
	{
	return Array (
	'OnEdit', 'OnSave', 'OnMassDelete', 'OnMassApprove',
	'OnMassDecline', 'OnMassMoveUp', 'OnMassMoveDown',
	'OnCut',
	);
	}

	/**
	* Returns category item IDs, that require permission checking
	*
	* @param kEvent $event
	* @return string
	*/
	function _getPermissionCheckIDs(&$event)
	{
	if ($event->Name == 'OnSave') {
	$selected_ids = implode(',', $this->getSelectedIDs($event, true));
	if (!$selected_ids) {
	$selected_ids = 0; // when saving newly created item (OnPreCreate -> OnPreSave -> OnSave)
	}
	}
	else {
	// OnEdit, OnMassDelete events, when items are checked in grid
	$selected_ids = implode(',', $this->StoreSelectedIDs($event));
	}

	return $selected_ids;
	}

	/**
	* Returns information used in permission checking
	*
	* @param kEvent $event
	* @return Array
	*/
	function _getPermissionCheckInfo(&$event)
	{
	$perm_helper =& $this->Application->recallObject('PermissionsHelper');
	/* @var $perm_helper kPermissionsHelper */

	// when saving data from temp table to live table check by data from temp table
	$item_ids = $this->_getPermissionCheckIDs($event);
	$items = $perm_helper->GetCategoryItemData($event->Prefix, $item_ids, $event->Name == 'OnSave');

	if (!$items) {
	// when item not present in temp table, then permission is not checked, because there are no data in db to check
	$items_info = $this->Application->GetVar( $event->getPrefixSpecial(true) );
	list ($id, $fields_hash) = each($items_info);

	if (array_key_exists('CategoryId', $fields_hash)) {
	$item_category = $fields_hash['CategoryId'];
	}
	else {
	$item_category = $this->Application->GetVar('m_cat_id');
	}

	$items[$id] = Array (
	'CreatedById' => $this->Application->RecallVar('use_id'),
	'CategoryId' => $item_category,
	);
	}

	return $items;
	}

	/**
	* Add selected items to clipboard with mode = COPY (CLONE)
	*
	* @param kEvent $event
	*/
	function OnCopy(&$event)
	{
	$this->Application->RemoveVar('clipboard');
	$clipboard_helper =& $this->Application->recallObject('ClipboardHelper');
	$clipboard_helper->setClipboard($event, 'copy', $this->StoreSelectedIDs($event));
	$this->clearSelectedIDs($event);
	}

	/**
	* Add selected items to clipboard with mode = CUT
	*
	* @param kEvent $event
	*/
	function OnCut(&$event)
	{
	$this->Application->RemoveVar('clipboard');
	$clipboard_helper =& $this->Application->recallObject('ClipboardHelper');
	$clipboard_helper->setClipboard($event, 'cut', $this->StoreSelectedIDs($event));
	$this->clearSelectedIDs($event);
	}

	/**
	* Checks permission for OnPaste event
	*
	* @param kEvent $event
	* @return bool
	*/
	function _checkPastePermission(&$event)
	{
	$perm_helper =& $this->Application->recallObject('PermissionsHelper');
	/* @var $perm_helper kPermissionsHelper */

	$category_id = $this->Application->GetVar('m_cat_id');
	if ($perm_helper->AddCheckPermission($category_id, $event->Prefix) == 0) {
	// no items left for editing -> no permission
	return $perm_helper->finalizePermissionCheck($event, false);
	}

	return true;
	}

	/**
	* Performs category item paste
	*
	* @param kEvent $event
	*/
	function OnPaste(&$event)
	{
	if ($this->Application->CheckPermission('SYSTEM_ACCESS.READONLY', 1) \|\| !$this->_checkPastePermission($event)) {
	$event->status = erFAIL;
	return;
	}

	$clipboard_data = $event->getEventParam('clipboard_data');

	if (!$clipboard_data['cut'] && !$clipboard_data['copy']) {
	return false;
	}

	if ($clipboard_data['copy']) {
	$temp =& $this->Application->recallObject($event->getPrefixSpecial().'_TempHandler', 'kTempTablesHandler');
	/* @var $temp kTempTablesHandler */

	$this->Application->SetVar('ResetCatBeforeClone', 1); // used in "kCatDBEventHandler::OnBeforeClone"
	$temp->CloneItems($event->Prefix, $event->Special, $clipboard_data['copy']);
	}

	if ($clipboard_data['cut']) {
	$object =& $this->Application->recallObject($event->getPrefixSpecial().'.item', $event->Prefix, Array('skip_autoload' => true));

	foreach ($clipboard_data['cut'] as $id) {
	$object->Load($id);
	$object->MoveToCat();
	}
	}
	}

	/**
	* Deletes all selected items.
	* Automatically recurse into sub-items using temp handler, and deletes sub-items
	* by calling its Delete method if sub-item has AutoDelete set to true in its config file
	*
	* @param kEvent $event
	*/
	function OnMassDelete(&$event)
	{
	if ($this->Application->CheckPermission('SYSTEM_ACCESS.READONLY', 1)) {
	$event->status = erFAIL;
	return;
	}

	$event->status=erSUCCESS;

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

	$to_delete = array();
	if ($recycle_bin = $this->Application->ConfigValue('RecycleBinFolder')) {
	$rb =& $this->Application->recallObject('c.recycle', null, array('skip_autoload' => true));
	$rb->Load($recycle_bin);
	$object =& $this->Application->recallObject($event->Prefix.'.recycleitem', null, Array ('skip_autoload' => true));
	foreach ($ids as $id) {
	$object->Load($id);
	if (preg_match('/^'.preg_quote($rb->GetDBField('ParentPath'),'/').'/', $object->GetDBField('ParentPath'))) {
	$to_delete[] = $id;
	continue;
	}
	$object->MoveToCat($recycle_bin);
	}
	$ids = $to_delete;
	}

	$temp =& $this->Application->recallObject($event->getPrefixSpecial().'_TempHandler', 'kTempTablesHandler');

	$event->setEventParam('ids', $ids);
	$this->customProcessing($event, 'before');
	$ids = $event->getEventParam('ids');

	if($ids)
	{
	$temp->DeleteItems($event->Prefix, $event->Special, $ids);
	}
	$this->clearSelectedIDs($event);
	}


	/**
	* Return type clauses for list bulding on front
	*
	* @param kEvent $event
	* @return Array
	*/
	function getTypeClauses(&$event)
	{
	$types = $event->getEventParam('types');
	$types = $types ? explode(',', $types) : Array ();

	$except_types = $event->getEventParam('except');
	$except_types = $except_types ? explode(',', $except_types) : Array ();

	$type_clauses = Array();

	$user_id = $this->Application->RecallVar('user_id');
	$owner_field = $this->getOwnerField($event->Prefix);

	$type_clauses['my_items']['include'] = '%1$s.'.$owner_field.' = '.$user_id;
	$type_clauses['my_items']['except'] = '%1$s.'.$owner_field.' <> '.$user_id;
	$type_clauses['my_items']['having_filter'] = false;

	$type_clauses['pick']['include'] = '%1$s.EditorsPick = 1 AND '.TABLE_PREFIX.'CategoryItems.PrimaryCat = 1';
	$type_clauses['pick']['except'] = '%1$s.EditorsPick! = 1 AND '.TABLE_PREFIX.'CategoryItems.PrimaryCat = 1';
	$type_clauses['pick']['having_filter'] = false;

	$type_clauses['hot']['include'] = '`IsHot` = 1 AND PrimaryCat = 1';
	$type_clauses['hot']['except'] = '`IsHot`! = 1 AND PrimaryCat = 1';
	$type_clauses['hot']['having_filter'] = true;

	$type_clauses['pop']['include'] = '`IsPop` = 1 AND PrimaryCat = 1';
	$type_clauses['pop']['except'] = '`IsPop`! = 1 AND PrimaryCat = 1';
	$type_clauses['pop']['having_filter'] = true;

	$type_clauses['new']['include'] = '`IsNew` = 1 AND PrimaryCat = 1';
	$type_clauses['new']['except'] = '`IsNew`! = 1 AND PrimaryCat = 1';
	$type_clauses['new']['having_filter'] = true;

	$type_clauses['displayed']['include'] = '';
	$displayed = $this->Application->GetVar($event->Prefix.'_displayed_ids');
	if ($displayed) {
	$id_field = $this->Application->getUnitOption($event->Prefix, 'IDField');
	$type_clauses['displayed']['except'] = '%1$s.'.$id_field.' NOT IN ('.$displayed.')';
	}
	else {
	$type_clauses['displayed']['except'] = '';
	}
	$type_clauses['displayed']['having_filter'] = false;

	if (in_array('search', $types) \|\| in_array('search', $except_types)) {
	$event_mapping = Array (
	'simple' => 'OnSimpleSearch',
	'subsearch' => 'OnSubSearch',
	'advanced' => 'OnAdvancedSearch'
	);

	$type = $this->Application->GetVar('search_type', 'simple');

	if ($keywords = $event->getEventParam('keyword_string')) {
	// processing keyword_string param of ListProducts tag
	$this->Application->SetVar('keywords', $keywords);
	$type = 'simple';
	}

	$search_event = $event_mapping[$type];
	$this->$search_event($event);

	$search_table = TABLE_PREFIX.'ses_'.$this->Application->GetSID().'_'.TABLE_PREFIX.'Search';
	$sql = 'SHOW TABLES LIKE "'.$search_table.'"';

	if ($this->Conn->Query($sql)) {
	$search_res_ids = $this->Conn->GetCol('SELECT ResourceId FROM '.$search_table);
	}

	if (isset($search_res_ids) && $search_res_ids) {
	$type_clauses['search']['include'] = '%1$s.ResourceId IN ('.implode(',', $search_res_ids).') AND PrimaryCat = 1 AND ('.TABLE_PREFIX.'Category.Status = '.STATUS_ACTIVE.')';
	$type_clauses['search']['except'] = '%1$s.ResourceId NOT IN ('.implode(',', $search_res_ids).') AND PrimaryCat = 1 AND ('.TABLE_PREFIX.'Category.Status = '.STATUS_ACTIVE.')';
	}
	else {
	$type_clauses['search']['include'] = '0';
	$type_clauses['search']['except'] = '1';
	}

	$type_clauses['search']['having_filter'] = false;
	}

	if (in_array('related', $types) \|\| in_array('related', $except_types)) {

	$related_to = $event->getEventParam('related_to');
	if (!$related_to) {
	$related_prefix = $event->Prefix;
	}
	else {
	$sql = 'SELECT Prefix
	FROM '.TABLE_PREFIX.'ItemTypes
	WHERE ItemName = '.$this->Conn->qstr($related_to);
	$related_prefix = $this->Conn->GetOne($sql);
	}

	$rel_table = $this->Application->getUnitOption('rel', 'TableName');
	$item_type = (int)$this->Application->getUnitOption($event->Prefix, 'ItemType');

	if ($item_type == 0) {
	trigger_error('<strong>ItemType</strong> not defined for prefix <strong>' . $event->Prefix . '</strong>', E_USER_WARNING);
	}

	// process case, then this list is called inside another list
	$prefix_special = $event->getEventParam('PrefixSpecial');
	if (!$prefix_special) {
	$prefix_special = $this->Application->Parser->GetParam('PrefixSpecial');
	}

	$id = false;
	if ($prefix_special !== false) {
	$processed_prefix = $this->Application->processPrefix($prefix_special);
	if ($processed_prefix['prefix'] == $related_prefix) {
	// printing related categories within list of items (not on details page)
	$list =& $this->Application->recallObject($prefix_special);
	/* @var $list kDBList */

	$id = $list->GetID();
	}
	}

	if ($id === false) {
	// printing related categories for single item (possibly on details page)
	if ($related_prefix == 'c') {
	$id = $this->Application->GetVar('m_cat_id');
	}
	else {
	$id = $this->Application->GetVar($related_prefix . '_id');
	}
	}

	$p_item =& $this->Application->recallObject($related_prefix.'.current', null, Array('skip_autoload' => true));
	$p_item->Load( (int)$id );

	$p_resource_id = $p_item->GetDBField('ResourceId');

	$sql = 'SELECT SourceId, TargetId FROM '.$rel_table.'
	WHERE
	(Enabled = 1)
	AND (
	(Type = 0 AND SourceId = '.$p_resource_id.' AND TargetType = '.$item_type.')
	OR
	(Type = 1
	AND (
	(SourceId = '.$p_resource_id.' AND TargetType = '.$item_type.')
	OR
	(TargetId = '.$p_resource_id.' AND SourceType = '.$item_type.')
	)
	)
	)';

	$related_ids_array = $this->Conn->Query($sql);
	$related_ids = Array();

	foreach ($related_ids_array as $key => $record) {
	$related_ids[] = $record[ $record['SourceId'] == $p_resource_id ? 'TargetId' : 'SourceId' ];
	}

	if (count($related_ids) > 0) {
	$type_clauses['related']['include'] = '%1$s.ResourceId IN ('.implode(',', $related_ids).') AND PrimaryCat = 1';
	$type_clauses['related']['except'] = '%1$s.ResourceId NOT IN ('.implode(',', $related_ids).') AND PrimaryCat = 1';
	}
	else {
	$type_clauses['related']['include'] = '0';
	$type_clauses['related']['except'] = '1';
	}
	$type_clauses['related']['having_filter'] = false;
	}

	if (in_array('favorites', $types) \|\| in_array('favorites', $except_types)) {
	$sql = 'SELECT ResourceId
	FROM '.$this->Application->getUnitOption('fav', 'TableName').'
	WHERE PortalUserId = '.$this->Application->RecallVar('user_id');
	$favorite_ids = $this->Conn->GetCol($sql);
	if ($favorite_ids) {
	$type_clauses['favorites']['include'] = '%1$s.ResourceId IN ('.implode(',', $favorite_ids).') AND PrimaryCat = 1';
	$type_clauses['favorites']['except'] = '%1$s.ResourceId NOT IN ('.implode(',', $favorite_ids).') AND PrimaryCat = 1';
	}
	else {
	$type_clauses['favorites']['include'] = 0;
	$type_clauses['favorites']['except'] = 1;
	}
	$type_clauses['favorites']['having_filter'] = false;
	}

	return $type_clauses;
	}

	/**
	* Returns SQL clause, that will help to select only data from specified category & it's children
	*
	* @param int $category_id
	* @return string
	*/
	function getCategoryLimitClause($category_id)
	{
	if (!$category_id) {
	return false;
	}

	$tree_indexes = $this->Application->getTreeIndex($category_id);
	if (!$tree_indexes) {
	// id of non-existing category was given
	return 'FALSE';
	}

	return TABLE_PREFIX.'Category.TreeLeft BETWEEN '.$tree_indexes['TreeLeft'].' AND '.$tree_indexes['TreeRight'];
	}

	/**
	* Apply filters to list
	*
	* @param kEvent $event
	*/
	function SetCustomQuery(&$event)
	{
	parent::SetCustomQuery($event);

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

	// add category filter if needed
	if ($event->Special != 'showall' && $event->Special != 'user') {
	if ($event->getEventParam('parent_cat_id') !== false) {
	$parent_cat_id = $event->getEventParam('parent_cat_id');
	}
	else {
	$parent_cat_id = $this->Application->GetVar('c_id');
	if (!$parent_cat_id) {
	$parent_cat_id = $this->Application->GetVar('m_cat_id');
	}
	if (!$parent_cat_id) {
	$parent_cat_id = 0;
	}
	}

	if ("$parent_cat_id" == '0') {
	// replace "0" category with "Content" category id (this way template
	$parent_cat_id = $this->Application->findModule('Name', 'Core', 'RootCat');
	}

	if ((string)$parent_cat_id != 'any') {
	if ($event->getEventParam('recursive')) {
	$filter_clause = $this->getCategoryLimitClause($parent_cat_id);
	if ($filter_clause !== false) {
	$object->addFilter('category_filter', $filter_clause);
	}

	$object->addFilter('primary_filter', 'PrimaryCat = 1');
	}
	else {
	$object->addFilter('category_filter', TABLE_PREFIX.'CategoryItems.CategoryId = '.$parent_cat_id );
	}
	}
	else {
	$object->addFilter('primary_filter', 'PrimaryCat = 1');
	}
	}
	else {
	$object->addFilter('primary_filter', 'PrimaryCat = 1');

	// if using recycle bin don't show items from there
	$recycle_bin = $this->Application->ConfigValue('RecycleBinFolder');
	if ($recycle_bin) {
	$object->addFilter('recyclebin_filter', TABLE_PREFIX.'CategoryItems.CategoryId <> '.$recycle_bin);
	}
	}

	if ($event->Special == 'user') {
	$editable_user = $this->Application->GetVar('u_id');
	$object->addFilter('owner_filter', '%1$s.'.$this->getOwnerField($event->Prefix).' = '.$editable_user);
	}

	// add permission filter
	if ($this->Application->RecallVar('user_id') == -1) {
	// for "root" CATEGORY.VIEW permission is checked for items lists too
	$view_perm = 1;
	}
	else {
	// for any real user itemlist view permission is checked instead of CATEGORY.VIEW
	$count_helper =& $this->Application->recallObject('CountHelper');
	/* @var $count_helper kCountHelper */

	list ($view_perm, $view_filter) = $count_helper->GetPermissionClause($event->Prefix, 'perm');
	$object->addFilter('perm_filter2', $view_filter);
	}

	$object->addFilter('perm_filter', 'perm.PermId = '.$view_perm);


	$types = $event->getEventParam('types');
	$this->applyItemStatusFilter($object, $types);

	$except_types = $event->getEventParam('except');
	$type_clauses = $this->getTypeClauses($event);

	// convert prepared type clauses into list filters
	$includes_or_filter =& $this->Application->makeClass('kMultipleFilter');
	$includes_or_filter->setType(FLT_TYPE_OR);

	$excepts_and_filter =& $this->Application->makeClass('kMultipleFilter');
	$excepts_and_filter->setType(FLT_TYPE_AND);

	$includes_or_filter_h =& $this->Application->makeClass('kMultipleFilter');
	$includes_or_filter_h->setType(FLT_TYPE_OR);

	$excepts_and_filter_h =& $this->Application->makeClass('kMultipleFilter');
	$excepts_and_filter_h->setType(FLT_TYPE_AND);

	if ($types) {
	$types_array = explode(',', $types);
	for ($i = 0; $i < sizeof($types_array); $i++) {
	$type = trim($types_array[$i]);
	if (isset($type_clauses[$type])) {
	if ($type_clauses[$type]['having_filter']) {
	$includes_or_filter_h->removeFilter('filter_'.$type);
	$includes_or_filter_h->addFilter('filter_'.$type, $type_clauses[$type]['include']);
	}else {
	$includes_or_filter->removeFilter('filter_'.$type);
	$includes_or_filter->addFilter('filter_'.$type, $type_clauses[$type]['include']);
	}
	}
	}
	}

	if ($except_types) {
	$except_types_array = explode(',', $except_types);
	for ($i = 0; $i < sizeof($except_types_array); $i++) {
	$type = trim($except_types_array[$i]);
	if (isset($type_clauses[$type])) {
	if ($type_clauses[$type]['having_filter']) {
	$excepts_and_filter_h->removeFilter('filter_'.$type);
	$excepts_and_filter_h->addFilter('filter_'.$type, $type_clauses[$type]['except']);
	}else {
	$excepts_and_filter->removeFilter('filter_'.$type);
	$excepts_and_filter->addFilter('filter_'.$type, $type_clauses[$type]['except']);
	}
	}
	}
	}

	/*if (!$this->Application->isAdminUser) {
	$object->addFilter('expire_filter', '%1$s.Expire IS NULL OR %1$s.Expire > UNIX_TIMESTAMP()');
	}*/

	/*$list_type = $event->getEventParam('ListType');
	switch($list_type)
	{
	case 'favorites':
	$fav_table = $this->Application->getUnitOption('fav','TableName');
	$user_id =& $this->Application->RecallVar('user_id');

	$sql = 'SELECT DISTINCT f.ResourceId
	FROM '.$fav_table.' f
	LEFT JOIN '.$object->TableName.' p ON p.ResourceId = f.ResourceId
	WHERE f.PortalUserId = '.$user_id;
	$ids = $this->Conn->GetCol($sql);
	if(!$ids) $ids = Array(-1);
	$object->addFilter('category_filter', TABLE_PREFIX.'CategoryItems.PrimaryCat = 1');
	$object->addFilter('favorites_filter', '%1$s.`ResourceId` IN ('.implode(',',$ids).')');
	break;
	case 'search':
	$search_results_table = TABLE_PREFIX.'ses_'.$this->Application->GetSID().'_'.TABLE_PREFIX.'Search';
	$sql = ' SELECT DISTINCT ResourceId
	FROM '.$search_results_table.'
	WHERE ItemType=11';
	$ids = $this->Conn->GetCol($sql);
	if(!$ids) $ids = Array(-1);
	$object->addFilter('search_filter', '%1$s.`ResourceId` IN ('.implode(',',$ids).')');
	break;
	} */

	$object->addFilter('includes_filter', $includes_or_filter);
	$object->addFilter('excepts_filter', $excepts_and_filter);

	$object->addFilter('includes_filter_h', $includes_or_filter_h, HAVING_FILTER);
	$object->addFilter('excepts_filter_h', $excepts_and_filter_h, HAVING_FILTER);
	}

	/**
	* Adds filter that filters out items with non-required statuses
	*
	* @param kDBList $object
	* @param string $types
	*/
	function applyItemStatusFilter(&$object, $types)
	{
	// Link1 (before modifications) [Status = 1, OrgId = NULL], Link2 (after modifications) [Status = -2, OrgId = Link1_ID]
	$pending_editing = $this->Application->getUnitOption($object->Prefix, 'UsePendingEditing');

	if (!$this->Application->isAdminUser) {
	$types = explode(',', $types);
	if (in_array('my_items', $types)) {
	$allow_statuses = Array (STATUS_ACTIVE, STATUS_PENDING, STATUS_PENDING_EDITING);
	$object->addFilter('status_filter', '%1$s.Status IN ('.implode(',', $allow_statuses).')');

	if ($pending_editing) {
	$user_id = $this->Application->RecallVar('user_id');
	$this->applyPendingEditingFilter($object, $user_id);
	}
	}
	else {
	$object->addFilter('status_filter', '(%1$s.Status = ' . STATUS_ACTIVE . ') AND (' . TABLE_PREFIX . 'Category.Status = ' . STATUS_ACTIVE . ')');
	if ($pending_editing) {
	// if category item uses pending editing abilities, then in no cases show pending copies on front
	$object->addFilter('original_filter', '%1$s.OrgId = 0 OR %1$s.OrgId IS NULL');
	}
	}
	}
	else {
	if ($pending_editing) {
	$this->applyPendingEditingFilter($object);
	}
	}
	}

	/**
	* Adds filter, that removes live items if they have pending editing copies
	*
	* @param kDBList $object
	* @param int $user_id
	*/
	function applyPendingEditingFilter(&$object, $user_id = null)
	{
	$sql = 'SELECT OrgId
	FROM '.$object->TableName.'
	WHERE Status = '.STATUS_PENDING_EDITING.' AND OrgId IS NOT NULL';

	if (isset($user_id)) {
	$owner_field = $this->getOwnerField($object->Prefix);
	$sql .= ' AND '.$owner_field.' = '.$user_id;
	}

	$pending_ids = $this->Conn->GetCol($sql);
	if ($pending_ids) {
	$object->addFilter('no_original_filter', '%1$s.'.$object->IDField.' NOT IN ('.implode(',', $pending_ids).')');
	}
	}

	/**
	* Adds calculates fields for item statuses
	*
	* @param kCatDBItem $object
	* @param kEvent $event
	*/
	function prepareObject(&$object, &$event)
	{
	$this->prepareItemStatuses($event);

	$object->addCalculatedField('CachedNavbar', 'l'.$this->Application->GetVar('m_lang').'_CachedNavbar');

	if ($event->Special == 'export' \|\| $event->Special == 'import') {
	$export_helper =& $this->Application->recallObject('CatItemExportHelper');
	$export_helper->prepareExportColumns($event);
	}
	}

	/**
	* Creates calculated fields for all item statuses based on config settings
	*
	* @param kEvent $event
	*/
	function prepareItemStatuses(&$event)
	{
	$object =& $event->getObject( Array('skip_autoload' => true) );

	$property_map = $this->Application->getUnitOption($event->Prefix, 'ItemPropertyMappings');
	if (!$property_map) {
	return ;
	}

	// new items
	$object->addCalculatedField('IsNew', ' IF(%1$s.NewItem = 2,
	IF(%1$s.CreatedOn >= (UNIX_TIMESTAMP() - '.
	$this->Application->ConfigValue($property_map['NewDays']).
	'360024), 1, 0),
	%1$s.NewItem
	)');

	// hot items (cache updated every hour)
	$sql = 'SELECT Data
	FROM '.TABLE_PREFIX.'Cache
	WHERE (VarName = "'.$property_map['HotLimit'].'") AND (Cached >'.(adodb_mktime() - 3600).')';
	$hot_limit = $this->Conn->GetOne($sql);
	if ($hot_limit === false) {
	$hot_limit = $this->CalculateHotLimit($event);
	}
	$object->addCalculatedField('IsHot', ' IF(%1$s.HotItem = 2,
	IF(%1$s.'.$property_map['ClickField'].' >= '.$hot_limit.', 1, 0),
	%1$s.HotItem
	)');

	// popular items
	$object->addCalculatedField('IsPop', ' IF(%1$s.PopItem = 2,
	IF(%1$s.CachedVotesQty >= '.
	$this->Application->ConfigValue($property_map['MinPopVotes']).
	' AND %1$s.CachedRating >= '.
	$this->Application->ConfigValue($property_map['MinPopRating']).
	', 1, 0),
	%1$s.PopItem)');

	}

	function CalculateHotLimit(&$event)
	{
	$property_map = $this->Application->getUnitOption($event->Prefix, 'ItemPropertyMappings');
	if (!$property_map) {
	return;
	}
	$click_field = $property_map['ClickField'];

	$last_hot = $this->Application->ConfigValue($property_map['MaxHotNumber']) - 1;
	$sql = 'SELECT '.$click_field.' FROM '.$this->Application->getUnitOption($event->Prefix, 'TableName').'
	ORDER BY '.$click_field.' DESC
	LIMIT '.$last_hot.', 1';
	$res = $this->Conn->GetCol($sql);
	$hot_limit = (double)array_shift($res);
	$this->Conn->Query('REPLACE INTO '.TABLE_PREFIX.'Cache (VarName, Data, Cached) VALUES ("'.$property_map['HotLimit'].'", "'.$hot_limit.'", '.adodb_mktime().')');
	return $hot_limit;

	return 0;
	}

	/**
	* Moves item to preferred category, updates item hits
	*
	* @param kEvent $event
	*/
	function OnBeforeItemUpdate(&$event)
	{
	parent::OnBeforeItemUpdate($event);

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

	// update hits field
	$property_map = $this->Application->getUnitOption($event->Prefix, 'ItemPropertyMappings');
	if ($property_map) {
	$click_field = $property_map['ClickField'];

	if( $this->Application->isAdminUser && ($this->Application->GetVar($click_field.'_original') !== false) &&
	floor($this->Application->GetVar($click_field.'_original')) != $object->GetDBField($click_field) )
	{
	$sql = 'SELECT MAX('.$click_field.') FROM '.$this->Application->getUnitOption($event->Prefix, 'TableName').'
	WHERE FLOOR('.$click_field.') = '.$object->GetDBField($click_field);
	$hits = ( $res = $this->Conn->GetOne($sql) ) ? $res + 0.000001 : $object->GetDBField($click_field);
	$object->SetDBField($click_field, $hits);
	}
	}

	// change category
	$target_category = $object->GetDBField('CategoryId');
	if ($object->GetOriginalField('CategoryId') != $target_category) {
	$object->MoveToCat($target_category);
	}
	}

	/**
	* Load price from temp table if product mode is temp table
	*
	* @param kEvent $event
	*/
	function OnAfterItemLoad(&$event)
	{
	$special = substr($event->Special, -6);

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

	if ($special == 'import' \|\| $special == 'export') {
	$image_data = $object->getPrimaryImageData();

	if ($image_data) {
	$thumbnail_image = $image_data[$image_data['LocalThumb'] ? 'ThumbPath' : 'ThumbUrl'];
	if ($image_data['SameImages']) {
	$full_image = '';
	}
	else {
	$full_image = $image_data[$image_data['LocalImage'] ? 'LocalPath' : 'Url'];
	}
	$object->SetDBField('ThumbnailImage', $thumbnail_image);
	$object->SetDBField('FullImage', $full_image);
	$object->SetDBField('ImageAlt', $image_data['AltName']);
	}
	}

	// substituiting pending status value for pending editing
	if ($object->HasField('OrgId') && $object->GetDBField('OrgId') > 0 && $object->GetDBField('Status') == -2) {
	$options = $object->Fields['Status']['options'];
	foreach ($options as $key => $val) {
	if ($key == 2) $key = -2;
	$new_options[$key] = $val;
	}
	$object->Fields['Status']['options'] = $new_options;
	}

	// linking existing images for item with virtual fields
	$image_helper =& $this->Application->recallObject('ImageHelper');
	/* @var $image_helper ImageHelper */

	$image_helper->LoadItemImages($object);

	// linking existing files for item with virtual fields
	$file_helper =& $this->Application->recallObject('FileHelper');
	/* @var $file_helper FileHelper */

	$file_helper->LoadItemFiles($object);

	// set item's additional categories to virtual field (used in editing)
	$item_categories = $this->getItemCategories($object->GetDBField('ResourceId'));
	$object->SetDBField('MoreCategories', $item_categories ? '\|'.implode('\|', $item_categories).'\|' : '');
	}

	function OnAfterItemUpdate(&$event)
	{
	$this->CalculateHotLimit($event);

	if ( substr($event->Special, -6) == 'import') {
	$this->setCustomExportColumns($event);
	}

	if (!$this->Application->isAdminUser) {
	$object =& $event->getObject();
	/* @var $object kDBItem */

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

	// process image upload in virtual fields
	$image_helper->SaveItemImages($object);

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

	// process file upload in virtual fields
	$file_helper->SaveItemFiles($object);

	if ($event->Special != '-item') {
	// don't touch categories during cloning
	$this->processAdditionalCategories($object, 'update');
	}
	}
	}

	/**
	* sets values for import process
	*
	* @param kEvent $event
	*/
	function OnAfterItemCreate(&$event)
	{
	if ( substr($event->Special, -6) == 'import') {
	$this->setCustomExportColumns($event);
	}

	if (!$this->Application->isAdminUser) {
	$object =& $event->getObject();
	/* @var $object kDBItem */

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

	// process image upload in virtual fields
	$image_helper->SaveItemImages($object);

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

	// process file upload in virtual fields
	$file_helper->SaveItemFiles($object);

	if ($event->Special != '-item') {
	// don't touch categories during cloning
	$this->processAdditionalCategories($object, 'create');
	}
	}
	}

	/**
	* Make record to search log
	*
	* @param string $keywords
	* @param int $search_type 0 - simple search, 1 - advanced search
	*/
	function saveToSearchLog($keywords, $search_type = 0)
	{
	// don't save keywords for each module separately, just one time
	// static variable can't help here, because each module uses it's own class instance !
	if (!$this->Application->GetVar('search_logged')) {
	$sql = 'UPDATE '.TABLE_PREFIX.'SearchLog
	SET Indices = Indices + 1
	WHERE Keyword = '.$this->Conn->qstr($keywords).' AND SearchType = '.$search_type; // 0 - simple search, 1 - advanced search
	$this->Conn->Query($sql);
	if ($this->Conn->getAffectedRows() == 0) {
	$fields_hash = Array('Keyword' => $keywords, 'Indices' => 1, 'SearchType' => $search_type);
	$this->Conn->doInsert($fields_hash, TABLE_PREFIX.'SearchLog');
	}

	$this->Application->SetVar('search_logged', 1);
	}
	}

	/**
	* Makes simple search for category items
	* based on keywords string
	*
	* @param kEvent $event
	*/
	function OnSimpleSearch(&$event)
	{
	$event->redirect = false;
	$search_table = TABLE_PREFIX.'ses_'.$this->Application->GetSID().'_'.TABLE_PREFIX.'Search';

	$keywords = unhtmlentities( trim($this->Application->GetVar('keywords')) );

	$query_object =& $this->Application->recallObject('HTTPQuery');
	$sql = 'SHOW TABLES LIKE "'.$search_table.'"';

	if(!isset($query_object->Get['keywords']) &&
	!isset($query_object->Post['keywords']) &&
	$this->Conn->Query($sql))
	{
	return; // used when navigating by pages or changing sorting in search results
	}
	if(!$keywords \|\| strlen($keywords) < $this->Application->ConfigValue('Search_MinKeyword_Length'))
	{
	$this->Conn->Query('DROP TABLE IF EXISTS '.$search_table);
	$this->Application->SetVar('keywords_too_short', 1);
	return; // if no or too short keyword entered, doing nothing
	}

	$this->Application->StoreVar('keywords', $keywords);

	$this->saveToSearchLog($keywords, 0); // 0 - simple search, 1 - advanced search

	$event->setPseudoClass('_List');

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

	$this->Application->SetVar($event->getPrefixSpecial().'_Page', 1);
	$lang = $this->Application->GetVar('m_lang');
	$items_table = $this->Application->getUnitOption($event->Prefix, 'TableName');
	$module_name = $this->Application->findModule('Var', $event->Prefix, 'Name');

	$sql = 'SELECT *
	FROM ' . $this->Application->getUnitOption('confs', 'TableName') . '
	WHERE ModuleName = ' . $this->Conn->qstr($module_name) . ' AND SimpleSearch = 1';
	$search_config = $this->Conn->Query($sql, 'FieldName');

	$field_list = array_keys($search_config);

	$join_clauses = Array();

	// field processing
	$weight_sum = 0;

	$alias_counter = 0;

	$custom_fields = $this->Application->getUnitOption($event->Prefix, 'CustomFields');
	if ($custom_fields) {
	$custom_table = $this->Application->getUnitOption($event->Prefix.'-cdata', 'TableName');
	$join_clauses[] = ' LEFT JOIN '.$custom_table.' custom_data ON '.$items_table.'.ResourceId = custom_data.ResourceId';
	}

	// what field in search config becomes what field in sql (key - new field, value - old field (from searchconfig table))
	$search_config_map = Array();

	foreach ($field_list as $key => $field) {
	$options = $object->getFieldOptions($field);
	$local_table = TABLE_PREFIX.$search_config[$field]['TableName'];
	$weight_sum += $search_config[$field]['Priority']; // counting weight sum; used when making relevance clause

	// processing multilingual fields
	if (getArrayValue($options, 'formatter') == 'kMultiLanguage') {
	$field_list[$key.'_primary'] = 'l'.$this->Application->GetDefaultLanguageId().'_'.$field;
	$field_list[$key] = 'l'.$lang.'_'.$field;

	if (!isset($search_config[$field]['ForeignField'])) {
	$field_list[$key.'_primary'] = $local_table.'.'.$field_list[$key.'_primary'];
	$search_config_map[ $field_list[$key.'_primary'] ] = $field;
	}
	}

	// processing fields from other tables
	if ($foreign_field = $search_config[$field]['ForeignField']) {
	$exploded = explode(':', $foreign_field, 2);
	if ($exploded[0] == 'CALC') {
	// ignoring having type clauses in simple search
	unset($field_list[$key]);
	continue;
	}
	else {
	$multi_lingual = false;
	if ($exploded[0] == 'MULTI') {
	$multi_lingual = true;
	$foreign_field = $exploded[1];
	}

	$exploded = explode('.', $foreign_field); // format: table.field_name
	$foreign_table = TABLE_PREFIX.$exploded[0];

	$alias_counter++;
	$alias = 't'.$alias_counter;

	if ($multi_lingual) {
	$field_list[$key] = $alias.'.'.'l'.$lang.'_'.$exploded[1];
	$field_list[$key.'_primary'] = 'l'.$this->Application->GetDefaultLanguageId().'_'.$field;
	$search_config_map[ $field_list[$key] ] = $field;
	$search_config_map[ $field_list[$key.'_primary'] ] = $field;
	}
	else {
	$field_list[$key] = $alias.'.'.$exploded[1];
	$search_config_map[ $field_list[$key] ] = $field;
	}

	$join_clause = str_replace('{ForeignTable}', $alias, $search_config[$field]['JoinClause']);
	$join_clause = str_replace('{LocalTable}', $items_table, $join_clause);

	$join_clauses[] = ' LEFT JOIN '.$foreign_table.' '.$alias.'
	ON '.$join_clause;
	}
	}
	else {
	// processing fields from local table
	if ($search_config[$field]['CustomFieldId']) {
	$local_table = 'custom_data';

	// search by custom field value on current language
	$custom_field_id = array_search($field_list[$key], $custom_fields);
	$field_list[$key] = 'l'.$lang.'_cust_'.$custom_field_id;

	// search by custom field value on primary language
	$field_list[$key.'_primary'] = $local_table.'.l'.$this->Application->GetDefaultLanguageId().'_cust_'.$custom_field_id;
	$search_config_map[ $field_list[$key.'_primary'] ] = $field;
	}

	$field_list[$key] = $local_table.'.'.$field_list[$key];
	$search_config_map[ $field_list[$key] ] = $field;
	}
	}

	// keyword string processing
	$search_helper =& $this->Application->recallObject('SearchHelper');
	/* @var $search_helper kSearchHelper */

	$where_clause = Array ();
	foreach ($field_list as $field) {
	if (preg_match('/^' . preg_quote($items_table, '/') . '\.(.*)/', $field, $regs)) {
	// local real field
	$filter_data = $search_helper->getSearchClause($object, $regs[1], $keywords, false);
	if ($filter_data) {
	$where_clause[] = $filter_data['value'];
	}
	}
	elseif (preg_match('/^custom_data\.(.*)/', $field, $regs)) {
	$custom_field_name = 'cust_' . $search_config_map[$field];
	$filter_data = $search_helper->getSearchClause($object, $custom_field_name, $keywords, false);
	if ($filter_data) {
	$where_clause[] = str_replace('`' . $custom_field_name . '`', $field, $filter_data['value']);
	}
	}
	else {
	$where_clause[] = $search_helper->buildWhereClause($keywords, Array ($field));
	}
	}

	$where_clause = '(' . implode(') OR (', $where_clause) . ')';

	$search_scope = $this->Application->GetVar('search_scope');
	if ($search_scope == 'category') {
	$category_id = $this->Application->GetVar('m_cat_id');
	$category_filter = $this->getCategoryLimitClause($category_id);
	if ($category_filter !== false) {
	$join_clauses[] = ' LEFT JOIN '.TABLE_PREFIX.'CategoryItems ON '.TABLE_PREFIX.'CategoryItems.ItemResourceId = '.$items_table.'.ResourceId';
	$join_clauses[] = ' LEFT JOIN '.TABLE_PREFIX.'Category ON '.TABLE_PREFIX.'Category.CategoryId = '.TABLE_PREFIX.'CategoryItems.CategoryId';

	$where_clause = '('.$this->getCategoryLimitClause($category_id).') AND '.$where_clause;
	}
	}

	$where_clause = $where_clause.' AND '.$items_table.'.Status=1';

	if ($event->MasterEvent && $event->MasterEvent->Name == 'OnListBuild') {
	if ($event->MasterEvent->getEventParam('ResultIds')) {
	$where_clause .= ' AND '.$items_table.'.ResourceId IN ('.implode(',', $event->MasterEvent->getEventParam('ResultIds')).')';
	}
	}

	// making relevance clause
	$positive_words = $search_helper->getPositiveKeywords($keywords);
	$this->Application->StoreVar('highlight_keywords', serialize($positive_words));
	$revelance_parts = Array();
	reset($search_config);

	foreach ($positive_words as $keyword_index => $positive_word) {
	$positive_word = $search_helper->transformWildcards($positive_word);
	$positive_words[$keyword_index] = $this->Conn->escape($positive_word);
	}

	foreach ($field_list as $field) {

	if (!array_key_exists($field, $search_config_map)) {
	$map_key = $search_config_map[$items_table . '.' . $field];
	}
	else {
	$map_key = $search_config_map[$field];
	}

	$config_elem = $search_config[ $map_key ];
	$weight = $config_elem['Priority'];
	$revelance_parts[] = 'IF('.$field.' LIKE "%'.implode(' ', $positive_words).'%", '.$weight_sum.', 0)';
	foreach ($positive_words as $keyword) {
	$revelance_parts[] = 'IF('.$field.' LIKE "%'.$keyword.'%", '.$weight.', 0)';
	}
	}

	$revelance_parts = array_unique($revelance_parts);

	$conf_postfix = $this->Application->getUnitOption($event->Prefix, 'SearchConfigPostfix');
	$rel_keywords = $this->Application->ConfigValue('SearchRel_Keyword_'.$conf_postfix) / 100;
	$rel_pop = $this->Application->ConfigValue('SearchRel_Pop_'.$conf_postfix) / 100;
	$rel_rating = $this->Application->ConfigValue('SearchRel_Rating_'.$conf_postfix) / 100;
	$relevance_clause = '('.implode(' + ', $revelance_parts).') / '.$weight_sum.' * '.$rel_keywords;
	if ($rel_pop && isset($object->Fields['Hits'])) {
	$relevance_clause .= ' + (Hits + 1) / (MAX(Hits) + 1) * '.$rel_pop;
	}
	if ($rel_rating && isset($object->Fields['CachedRating'])) {
	$relevance_clause .= ' + (CachedRating + 1) / (MAX(CachedRating) + 1) * '.$rel_rating;
	}

	// building final search query
	if (!$this->Application->GetVar('do_not_drop_search_table')) {
	$this->Conn->Query('DROP TABLE IF EXISTS '.$search_table); // erase old search table if clean k4 event
	$this->Application->SetVar('do_not_drop_search_table', true);
	}


	$search_table_exists = $this->Conn->Query('SHOW TABLES LIKE "'.$search_table.'"');
	if ($search_table_exists) {
	$select_intro = 'INSERT INTO '.$search_table.' (Relevance, ItemId, ResourceId, ItemType, EdPick) ';
	}
	else {
	$select_intro = 'CREATE TABLE '.$search_table.' AS ';
	}

	$edpick_clause = $this->Application->getUnitOption($event->Prefix.'.EditorsPick', 'Fields') ? $items_table.'.EditorsPick' : '0';


	$sql = $select_intro.' SELECT '.$relevance_clause.' AS Relevance,
	'.$items_table.'.'.$this->Application->getUnitOption($event->Prefix, 'IDField').' AS ItemId,
	'.$items_table.'.ResourceId,
	'.$this->Application->getUnitOption($event->Prefix, 'ItemType').' AS ItemType,
	'.$edpick_clause.' AS EdPick
	FROM '.$object->TableName.'
	'.implode(' ', $join_clauses).'
	WHERE '.$where_clause.'
	GROUP BY '.$items_table.'.'.$this->Application->getUnitOption($event->Prefix, 'IDField');

	$res = $this->Conn->Query($sql);
	}

	/**
	* Enter description here...
	*
	* @param kEvent $event
	*/
	function OnSubSearch(&$event)
	{
	$search_table = TABLE_PREFIX.'ses_'.$this->Application->GetSID().'_'.TABLE_PREFIX.'Search';
	$sql = 'SHOW TABLES LIKE "'.$search_table.'"';
	if($this->Conn->Query($sql))
	{
	$sql = 'SELECT DISTINCT ResourceId FROM '.$search_table;
	$ids = $this->Conn->GetCol($sql);
	}
	$event->setEventParam('ResultIds', $ids);
	$event->CallSubEvent('OnSimpleSearch');
	}

	/**
	* Enter description here...
	*
	* @param kEvent $event
	* @todo Change all hardcoded Products table & In-Commerce module usage to dynamic usage from item config !!!
	*/
	function OnAdvancedSearch(&$event)
	{
	$query_object =& $this->Application->recallObject('HTTPQuery');
	if(!isset($query_object->Post['andor']))
	{
	return; // used when navigating by pages or changing sorting in search results
	}

	$this->Application->RemoveVar('keywords');
	$this->Application->RemoveVar('Search_Keywords');

	$module_name = $this->Application->findModule('Var', $event->Prefix, 'Name');

	$sql = 'SELECT *
	FROM '.$this->Application->getUnitOption('confs', 'TableName').'
	WHERE (ModuleName = '.$this->Conn->qstr($module_name).') AND (AdvancedSearch = 1)';
	$search_config = $this->Conn->Query($sql);

	$lang = $this->Application->GetVar('m_lang');
	$object =& $event->getObject();
	$object->SetPage(1);

	$items_table = $this->Application->getUnitOption($event->Prefix, 'TableName');

	$search_keywords = $this->Application->GetVar('value'); // will not be changed

	$keywords = $this->Application->GetVar('value'); // will be changed down there
	$verbs = $this->Application->GetVar('verb');
	$glues = $this->Application->GetVar('andor');

	$and_conditions = Array();
	$or_conditions = Array();
	$and_having_conditions = Array();
	$or_having_conditions = Array();
	$join_clauses = Array();
	$highlight_keywords = Array();
	$relevance_parts = Array();

	$alias_counter = 0;

	$custom_fields = $this->Application->getUnitOption($event->Prefix, 'CustomFields');
	if ($custom_fields) {
	$custom_table = $this->Application->getUnitOption($event->Prefix.'-cdata', 'TableName');
	$join_clauses[] = ' LEFT JOIN '.$custom_table.' custom_data ON '.$items_table.'.ResourceId = custom_data.ResourceId';
	}

	$search_log = '';
	$weight_sum = 0;

	// processing fields and preparing conditions
	foreach ($search_config as $record) {
	$field = $record['FieldName'];
	$join_clause = '';
	$condition_mode = 'WHERE';

	// field processing

	$options = $object->getFieldOptions($field);
	$local_table = TABLE_PREFIX.$record['TableName'];
	$weight_sum += $record['Priority']; // counting weight sum; used when making relevance clause

	// processing multilingual fields
	if (getArrayValue($options, 'formatter') == 'kMultiLanguage') {
	$field_name = 'l'.$lang.'_'.$field;
	}
	else {
	$field_name = $field;
	}

	// processing fields from other tables
	if ($foreign_field = $record['ForeignField']) {
	$exploded = explode(':', $foreign_field, 2);
	if($exploded[0] == 'CALC')
	{
	$user_groups = $this->Application->RecallVar('UserGroups');
	$field_name = str_replace('{PREFIX}', TABLE_PREFIX, $exploded[1]);
	$join_clause = str_replace('{PREFIX}', TABLE_PREFIX, $record['JoinClause']);
	$join_clause = str_replace('{USER_GROUPS}', $user_groups, $join_clause);
	$join_clause = ' LEFT JOIN '.$join_clause;

	$condition_mode = 'HAVING';
	}
	else {
	$exploded = explode('.', $foreign_field);
	$foreign_table = TABLE_PREFIX.$exploded[0];

	if($record['CustomFieldId']) {
	$exploded[1] = 'l'.$lang.'_'.$exploded[1];
	}

	$alias_counter++;
	$alias = 't'.$alias_counter;

	$field_name = $alias.'.'.$exploded[1];
	$join_clause = str_replace('{ForeignTable}', $alias, $record['JoinClause']);
	$join_clause = str_replace('{LocalTable}', $items_table, $join_clause);

	if($record['CustomFieldId'])
	{
	$join_clause .= ' AND '.$alias.'.CustomFieldId='.$record['CustomFieldId'];
	}
	$join_clause = ' LEFT JOIN '.$foreign_table.' '.$alias.'
	ON '.$join_clause;
	}
	}
	else
	{
	// processing fields from local table
	if ($record['CustomFieldId']) {
	$local_table = 'custom_data';
	$field_name = 'l'.$lang.'_cust_'.array_search($field_name, $custom_fields);
	}

	$field_name = $local_table.'.'.$field_name;
	}

	$condition = $this->getAdvancedSearchCondition($field_name, $record, $keywords, $verbs, $highlight_keywords);
	if ($record['CustomFieldId'] && strlen($condition)) {
	// search in primary value of custom field + value in current language
	$field_name = $local_table.'.'.'l'.$this->Application->GetDefaultLanguageId().'_cust_'.array_search($field, $custom_fields);
	$primary_condition = $this->getAdvancedSearchCondition($field_name, $record, $keywords, $verbs, $highlight_keywords);
	$condition = '('.$condition.' OR '.$primary_condition.')';
	}

	if ($condition) {
	if ($join_clause) {
	$join_clauses[] = $join_clause;
	}

	$relevance_parts[] = 'IF('.$condition.', '.$record['Priority'].', 0)';
	if ($glues[$field] == 1) { // and
	if ($condition_mode == 'WHERE') {
	$and_conditions[] = $condition;
	}
	else {
	$and_having_conditions[] = $condition;
	}
	}
	else { // or
	if ($condition_mode == 'WHERE') {
	$or_conditions[] = $condition;
	}
	else {
	$or_having_conditions[] = $condition;
	}
	}

	// create search log record
	$search_log_data = Array('search_config' => $record, 'verb' => getArrayValue($verbs, $field), 'value' => ($record['FieldType'] == 'range') ? $search_keywords[$field.'_from'].'\|'.$search_keywords[$field.'_to'] : $search_keywords[$field]);
	$search_log[] = $this->Application->Phrase('la_Field').' "'.$this->getHuman('Field', $search_log_data).'" '.$this->getHuman('Verb', $search_log_data).' '.$this->Application->Phrase('la_Value').' '.$this->getHuman('Value', $search_log_data).' '.$this->Application->Phrase($glues[$field] == 1 ? 'lu_And' : 'lu_Or');
	}
	}

	if ($search_log) {
	$search_log = implode('<br />', $search_log);
	$search_log = preg_replace('/(.*) '.preg_quote($this->Application->Phrase('lu_and'), '/').'\|'.preg_quote($this->Application->Phrase('lu_or'), '/').'$/is', '\\1', $search_log);
	$this->saveToSearchLog($search_log, 1); // advanced search
	}

	$this->Application->StoreVar('highlight_keywords', serialize($highlight_keywords));

	// making relevance clause
	if($relevance_parts)
	{
	$conf_postfix = $this->Application->getUnitOption($event->Prefix, 'SearchConfigPostfix');
	$rel_keywords = $this->Application->ConfigValue('SearchRel_Keyword_'.$conf_postfix) / 100;
	$rel_pop = $this->Application->ConfigValue('SearchRel_Pop_'.$conf_postfix) / 100;
	$rel_rating = $this->Application->ConfigValue('SearchRel_Rating_'.$conf_postfix) / 100;
	$relevance_clause = '('.implode(' + ', $relevance_parts).') / '.$weight_sum.' * '.$rel_keywords;
	$relevance_clause .= ' + (Hits + 1) / (MAX(Hits) + 1) * '.$rel_pop;
	$relevance_clause .= ' + (CachedRating + 1) / (MAX(CachedRating) + 1) * '.$rel_rating;
	}
	else
	{
	$relevance_clause = '0';
	}

	// building having clause
	if($or_having_conditions)
	{
	$and_having_conditions[] = '('.implode(' OR ', $or_having_conditions).')';
	}
	$having_clause = implode(' AND ', $and_having_conditions);
	$having_clause = $having_clause ? ' HAVING '.$having_clause : '';

	// building where clause
	if($or_conditions)
	{
	$and_conditions[] = '('.implode(' OR ', $or_conditions).')';
	}
	// $and_conditions[] = $items_table.'.Status = 1';
	$where_clause = implode(' AND ', $and_conditions);
	if(!$where_clause)
	{
	if($having_clause)
	{
	$where_clause = '1';
	}
	else
	{
	$where_clause = '0';
	$this->Application->SetVar('adv_search_error', 1);
	}
	}
	$where_clause .= ' AND '.$items_table.'.Status = 1';

	// building final search query
	$search_table = TABLE_PREFIX.'ses_'.$this->Application->GetSID().'_'.TABLE_PREFIX.'Search';

	$this->Conn->Query('DROP TABLE IF EXISTS '.$search_table);

	$id_field = $this->Application->getUnitOption($event->Prefix, 'IDField');
	$fields = $this->Application->getUnitOption($event->Prefix, 'Fields');
	$pick_field = isset($fields['EditorsPick']) ? $items_table.'.EditorsPick' : '0';

	$sql = ' CREATE TABLE '.$search_table.'
	SELECT '.$relevance_clause.' AS Relevance,
	'.$items_table.'.'.$id_field.' AS ItemId,
	'.$items_table.'.ResourceId AS ResourceId,
	11 AS ItemType,
	'.$pick_field.' AS EdPick
	FROM '.$items_table.'
	'.implode(' ', $join_clauses).'
	WHERE '.$where_clause.'
	GROUP BY '.$items_table.'.'.$id_field.
	$having_clause;

	$res = $this->Conn->Query($sql);
	}

	function getAdvancedSearchCondition($field_name, $record, $keywords, $verbs, &$highlight_keywords)
	{
	$field = $record['FieldName'];

	$condition_patterns = Array (
	'any' => '%s LIKE %s',
	'contains' => '%s LIKE %s',
	'notcontains' => '(NOT (%1$s LIKE %2$s) OR %1$s IS NULL)',
	'is' => '%s = %s',
	'isnot' => '(%1$s != %2$s OR %1$s IS NULL)'
	);

	$condition = '';
	switch ($record['FieldType']) {
	case 'select':
	$keywords[$field] = unhtmlentities( $keywords[$field] );
	if ($keywords[$field]) {
	$condition = sprintf($condition_patterns['is'], $field_name, $this->Conn->qstr( $keywords[$field] ));
	}
	break;

	case 'multiselect':
	$keywords[$field] = unhtmlentities( $keywords[$field] );
	if ($keywords[$field]) {
	$condition = Array ();
	$values = explode('\|', substr($keywords[$field], 1, -1));
	foreach ($values as $selected_value) {
	$condition[] = sprintf($condition_patterns['contains'], $field_name, $this->Conn->qstr('%\|'.$selected_value.'\|%'));
	}
	$condition = '('.implode(' OR ', $condition).')';
	}
	break;

	case 'text':
	$keywords[$field] = unhtmlentities( $keywords[$field] );

	if (mb_strlen($keywords[$field]) >= $this->Application->ConfigValue('Search_MinKeyword_Length')) {
	$highlight_keywords[] = $keywords[$field];
	if (in_array($verbs[$field], Array('any', 'contains', 'notcontains'))) {
	$keywords[$field] = '%'.strtr($keywords[$field], Array('%' => '\\%', '_' => '\\_')).'%';
	}
	$condition = sprintf($condition_patterns[$verbs[$field]], $field_name, $this->Conn->qstr( $keywords[$field] ));
	}
	break;

	case 'boolean':
	if ($keywords[$field] != -1) {
	$property_mappings = $this->Application->getUnitOption($this->Prefix, 'ItemPropertyMappings');
	$items_table = $this->Application->getUnitOption($event->Prefix, 'TableName');

	switch ($field) {
	case 'HotItem':
	$hot_limit_var = getArrayValue($property_mappings, 'HotLimit');
	if ($hot_limit_var) {
	$sql = 'SELECT Data
	FROM '.TABLE_PREFIX.'Cache
	WHERE VarName = "'.$hot_limit_var.'"';
	$hot_limit = (int)$this->Conn->GetOne($sql);

	$condition = 'IF('.$items_table.'.HotItem = 2,
	IF('.$items_table.'.Hits >= '.
	$hot_limit.
	', 1, 0), '.$items_table.'.HotItem) = '.$keywords[$field];
	}
	break;

	case 'PopItem':
	$votes2pop_var = getArrayValue($property_mappings, 'VotesToPop');
	$rating2pop_var = getArrayValue($property_mappings, 'RatingToPop');
	if ($votes2pop_var && $rating2pop_var) {
	$condition = 'IF('.$items_table.'.PopItem = 2, IF('.$items_table.'.CachedVotesQty >= '.
	$this->Application->ConfigValue($votes2pop_var).
	' AND '.$items_table.'.CachedRating >= '.
	$this->Application->ConfigValue($rating2pop_var).
	', 1, 0), '.$items_table.'.PopItem) = '.$keywords[$field];
	}
	break;

	case 'NewItem':
	$new_days_var = getArrayValue($property_mappings, 'NewDays');
	if ($new_days_var) {
	$condition = 'IF('.$items_table.'.NewItem = 2,
	IF('.$items_table.'.CreatedOn >= (UNIX_TIMESTAMP() - '.
	$this->Application->ConfigValue($new_days_var).
	'360024), 1, 0), '.$items_table.'.NewItem) = '.$keywords[$field];
	}
	break;

	case 'EditorsPick':
	$condition = $items_table.'.EditorsPick = '.$keywords[$field];
	break;
	}
	}
	break;

	case 'range':
	$range_conditions = Array();
	if ($keywords[$field.'_from'] && !preg_match("/[^0-9]/i", $keywords[$field.'_from'])) {
	$range_conditions[] = $field_name.' >= '.$keywords[$field.'_from'];
	}
	if ($keywords[$field.'_to'] && !preg_match("/[^0-9]/i", $keywords[$field.'_to'])) {
	$range_conditions[] = $field_name.' <= '.$keywords[$field.'_to'];
	}
	if ($range_conditions) {
	$condition = implode(' AND ', $range_conditions);
	}
	break;

	case 'date':
	if ($keywords[$field]) {
	if (in_array($keywords[$field], Array('today', 'yesterday'))) {
	$current_time = getdate();
	$day_begin = adodb_mktime(0, 0, 0, $current_time['mon'], $current_time['mday'], $current_time['year']);
	$time_mapping = Array('today' => $day_begin, 'yesterday' => ($day_begin - 86400));
	$min_time = $time_mapping[$keywords[$field]];
	}
	else {
	$time_mapping = Array (
	'last_week' => 604800, 'last_month' => 2628000, 'last_3_months' => 7884000,
	'last_6_months' => 15768000, 'last_year' => 31536000,
	);
	$min_time = adodb_mktime() - $time_mapping[$keywords[$field]];
	}
	$condition = $field_name.' > '.$min_time;
	}
	break;
	}

	return $condition;
	}

	function getHuman($type, $search_data)
	{
	$type = ucfirst(strtolower($type));
	extract($search_data);

	switch ($type) {
	case 'Field':
	return $this->Application->Phrase($search_config['DisplayName']);
	break;

	case 'Verb':
	return $verb ? $this->Application->Phrase('lu_advsearch_'.$verb) : '';
	break;

	case 'Value':
	switch ($search_config['FieldType']) {
	case 'date':
	$values = Array(0 => 'lu_comm_Any', 'today' => 'lu_comm_Today',
	'yesterday' => 'lu_comm_Yesterday', 'last_week' => 'lu_comm_LastWeek',
	'last_month' => 'lu_comm_LastMonth', 'last_3_months' => 'lu_comm_Last3Months',
	'last_6_months' => 'lu_comm_Last6Months', 'last_year' => 'lu_comm_LastYear');
	$ret = $this->Application->Phrase($values[$value]);
	break;

	case 'range':
	$value = explode('\|', $value);
	return $this->Application->Phrase('lu_comm_From').' "'.$value[0].'" '.$this->Application->Phrase('lu_comm_To').' "'.$value[1].'"';
	break;

	case 'boolean':
	$values = Array(1 => 'lu_comm_Yes', 0 => 'lu_comm_No', -1 => 'lu_comm_Both');
	$ret = $this->Application->Phrase($values[$value]);
	break;

	default:
	$ret = $value;
	break;

	}
	return '"'.$ret.'"';
	break;
	}
	}



	/**
	* Set's correct page for list
	* based on data provided with event
	*
	* @param kEvent $event
	* @access private
	* @see OnListBuild
	*/
	function SetPagination(&$event)
	{
	// get PerPage (forced -> session -> config -> 10)
	$per_page = $this->getPerPage($event);


	$object =& $event->getObject();
	$object->SetPerPage($per_page);
	$this->Application->StoreVarDefault($event->getPrefixSpecial().'_Page', 1, true); // true for optional

	$page = $this->Application->GetVar($event->getPrefixSpecial().'_Page');
	if (!$page)
	{
	$page = $this->Application->GetVar($event->getPrefixSpecial(true).'_Page');
	}

	if (!$page)
	{
	if( $this->Application->RewriteURLs() )
	{
	$page = $this->Application->GetVar($event->Prefix.'_Page');
	if (!$page)
	{
	$page = $this->Application->RecallVar($event->Prefix.'_Page');
	}
	if($page) $this->Application->StoreVar($event->getPrefixSpecial().'_Page', $page, true); //true for optional
	}
	else
	{
	$page = $this->Application->RecallVar($event->getPrefixSpecial().'_Page');
	}
	}
	else {
	$this->Application->StoreVar($event->getPrefixSpecial().'_Page', $page, true); //true for optional
	}

	if( !$event->getEventParam('skip_counting') )
	{
	$pages = $object->GetTotalPages();
	if($page > $pages)
	{
	$this->Application->StoreVar($event->getPrefixSpecial().'_Page', 1);
	$page = 1;
	}
	}

	/*$cur_per_page = $per_page;
	$per_page = $event->getEventParam('per_page');
	if ($per_page == 'list_next') {

	$cur_page = $page;

	$object =& $this->Application->recallObject($event->Prefix);
	$object->SetPerPage(1);
	$cur_item_index = $object->CurrentIndex;

	$page = ($cur_page-1) * $cur_per_page + $cur_item_index + 1;
	$object->SetPerPage(1);
	}*/

	$object->SetPage($page);
	}

	/* === RELATED TO IMPORT/EXPORT: BEGIN === */

	/**
	* Shows export dialog
	*
	* @param kEvent $event
	*/
	function OnExport(&$event)
	{
	$selected_ids = $this->StoreSelectedIDs($event);
	if (implode(',', $selected_ids) == '') {
	// K4 fix when no ids found bad selected ids array is formed
	$selected_ids = false;
	}

	$selected_cats_ids = $this->Application->GetVar('export_categories');

	$this->Application->StoreVar($event->Prefix.'_export_ids', $selected_ids ? implode(',', $selected_ids) : '' );
	$this->Application->StoreVar($event->Prefix.'_export_cats_ids', $selected_cats_ids);

	$export_helper =& $this->Application->recallObject('CatItemExportHelper');
	/* @var $export_helper kCatDBItemExportHelper */

	$redirect_params = Array (
	$this->Prefix.'.export_event' => 'OnNew',
	'pass' => 'all,'.$this->Prefix.'.export'
	);

	$event->setRedirectParams($redirect_params);
	}

	/**
	* Performs each export step & displays progress percent
	*
	* @param kEvent $event
	*/
	function OnExportProgress(&$event)
	{
	$export_object =& $this->Application->recallObject('CatItemExportHelper');
	/* @var $export_object kCatDBItemExportHelper */

	$event = new kEvent($event->getPrefixSpecial().':OnDummy');

	$action_method = 'perform'.ucfirst($event->Special);
	$field_values = $export_object->$action_method($event);

	// finish code is done from JS now
	if ($field_values['start_from'] == $field_values['total_records']) {
	if ($event->Special == 'import') {
	$this->Application->StoreVar('PermCache_UpdateRequired', 1);
	$url_params = Array(
	't' => 'catalog/catalog',
	'm_cat_id' => $this->Application->RecallVar('ImportCategory'),
	'anchor' => 'tab-' . $event->Prefix,
	);
	$this->Application->EventManager->openerStackChange($url_params);

	$event->SetRedirectParam('opener', 'u');
	}
	elseif ($event->Special == 'export') {
	$event->redirect = $this->Application->getUnitOption($event->Prefix, 'ModuleFolder') . '/' . $event->Special . '_finish';
	$event->SetRedirectParam('pass', 'all');
	}

	return ;
	}

	$export_options = $export_object->loadOptions($event);
	echo $export_options['start_from'] * 100 / $export_options['total_records'];

	$event->status = erSTOP;
	}

	/**
	* Returns specific to each item type columns only
	*
	* @param kEvent $event
	* @return Array
	*/
	function getCustomExportColumns(&$event)
	{
	return Array( '__VIRTUAL__ThumbnailImage' => 'ThumbnailImage',
	'__VIRTUAL__FullImage' => 'FullImage',
	'__VIRTUAL__ImageAlt' => 'ImageAlt');
	}

	/**
	* Sets non standart virtual fields (e.g. to other tables)
	*
	* @param kEvent $event
	*/
	function setCustomExportColumns(&$event)
	{
	$this->restorePrimaryImage($event);
	}

	/**
	* Create/Update primary image record in info found in imported data
	*
	* @param kEvent $event
	*/
	function restorePrimaryImage(&$event)
	{
	$object =& $event->getObject();

	$has_image_info = $object->GetDBField('ImageAlt') && ($object->GetDBField('ThumbnailImage') \|\| $object->GetDBField('FullImage'));
	if (!$has_image_info) {
	return false;
	}

	$image_data = $object->getPrimaryImageData();

	$image =& $this->Application->recallObject('img', null, Array('skip_autoload' => true));
	if ($image_data) {
	$image->Load($image_data['ImageId']);
	}
	else {
	$image->Clear();
	$image->SetDBField('Name', 'main');
	$image->SetDBField('DefaultImg', 1);
	$image->SetDBField('ResourceId', $object->GetDBField('ResourceId'));
	}

	$image->SetDBField('AltName', $object->GetDBField('ImageAlt'));

	if ($object->GetDBField('ThumbnailImage')) {
	$thumbnail_field = $this->isURL( $object->GetDBField('ThumbnailImage') ) ? 'ThumbUrl' : 'ThumbPath';
	$image->SetDBField($thumbnail_field, $object->GetDBField('ThumbnailImage') );
	$image->SetDBField('LocalThumb', $thumbnail_field == 'ThumbPath' ? 1 : 0);
	}

	if (!$object->GetDBField('FullImage')) {
	$image->SetDBField('SameImages', 1);
	}
	else {
	$image->SetDBField('SameImages', 0);
	$full_field = $this->isURL( $object->GetDBField('FullImage') ) ? 'Url' : 'LocalPath';
	$image->SetDBField($full_field, $object->GetDBField('FullImage') );
	$image->SetDBField('LocalImage', $full_field == 'LocalPath' ? 1 : 0);
	}

	if ($image->isLoaded()) {
	$image->Update();
	}
	else {
	$image->Create();
	}
	}

	function isURL($path)
	{
	return preg_match('#(http\|https)://(.*)#', $path);
	}

	/**
	* Prepares item for import/export operations
	*
	* @param kEvent $event
	*/
	function OnNew(&$event)
	{
	parent::OnNew($event);

	if ($event->Special == 'import' \|\| $event->Special == 'export') {
	$export_helper =& $this->Application->recallObject('CatItemExportHelper');
	$export_helper->setRequiredFields($event);
	}
	}

	/**
	* Process items selected in item_selector
	*
	* @param kEvent $event
	*/
	function OnProcessSelected(&$event)
	{
	$selected_ids = $this->Application->GetVar('selected_ids');

	$dst_field = $this->Application->RecallVar('dst_field');

	if ($dst_field == 'ItemCategory') {
	// Item Edit -> Categories Tab -> New Categories
	$object =& $event->getObject();
	$category_ids = explode(',', $selected_ids['c']);
	foreach ($category_ids as $category_id) {
	$object->assignToCategory($category_id);
	}
	}

	if ($dst_field == 'ImportCategory') {
	// Tools -> Import -> Item Import -> Select Import Category
	$this->Application->StoreVar('ImportCategory', $selected_ids['c']);
	// $this->Application->StoreVar($event->getPrefixSpecial().'_ForceNotValid', 1); // not to loose import/export values on form refresh

	$url_params = Array (
	$event->getPrefixSpecial() . '_id' => 0,
	$event->getPrefixSpecial() . '_event' => 'OnExportBegin',
	// 'm_opener' => 's',
	);

	$this->Application->EventManager->openerStackChange($url_params);
	}

	$event->SetRedirectParam('opener', 'u');
	}

	/**
	* Saves Import/Export settings to session
	*
	* @param kEvent $event
	*/
	function OnSaveSettings(&$event)
	{
	$event->redirect = false;
	$items_info = $this->Application->GetVar( $event->getPrefixSpecial(true) );
	if ($items_info) {
	list($id, $field_values) = each($items_info);

	$object =& $event->getObject( Array('skip_autoload' => true) );
	$object->SetFieldsFromHash($field_values);
	$field_values['ImportFilename'] = $object->GetDBField('ImportFilename'); //if upload formatter has renamed the file during moving !!!
	$field_values['ImportSource'] = 2;
	$field_values['ImportLocalFilename'] = $object->GetDBField('ImportFilename');
	$items_info[$id] = $field_values;

	$this->Application->StoreVar($event->getPrefixSpecial().'_ItemsInfo', serialize($items_info));
	}
	}

	/**
	* Saves Import/Export settings to session
	*
	* @param kEvent $event
	*/
	function OnResetSettings(&$event)
	{
	$this->Application->StoreVar('ImportCategory', $this->Application->findModule('Name', 'Core', 'RootCat'));
	}

	function OnCancelAction(&$event)
	{
	$event->redirect_params = Array('pass' => 'all,'.$event->GetPrefixSpecial());
	$event->redirect = $this->Application->GetVar('cancel_template');
	}

	/* === RELATED TO IMPORT/EXPORT: END === */

	/**
	* Stores item's owner login into separate field together with id
	*
	* @param kEvent $event
	* @param string $id_field
	* @param string $cached_field
	*/
	function cacheItemOwner(&$event, $id_field, $cached_field)
	{
	$object =& $event->getObject();

	$user_id = $object->GetDBField($id_field);
	$options = $object->GetFieldOptions($id_field);
	if (isset($options['options'][$user_id])) {
	$object->SetDBField($cached_field, $options['options'][$user_id]);
	}
	else {
	$id_field = $this->Application->getUnitOption('u', 'IDField');
	$table_name = $this->Application->getUnitOption('u', 'TableName');

	$sql = 'SELECT Login
	FROM '.$table_name.'
	WHERE '.$id_field.' = '.$user_id;
	$object->SetDBField($cached_field, $this->Conn->GetOne($sql));
	}
	}

	/**
	* Saves item beeing edited into temp table
	*
	* @param kEvent $event
	*/
	function OnPreSave(&$event)
	{
	parent::OnPreSave($event);
	$use_pending_editing = $this->Application->getUnitOption($event->Prefix, 'UsePendingEditing');
	if ($event->status == erSUCCESS && $use_pending_editing) {
	// decision: clone or not clone

	$object =& $event->getObject();
	if ($object->GetID() == 0 \|\| $object->GetDBField('OrgId') > 0) {
	// new items or cloned items shouldn't be cloned again
	return true;
	}
	$perm_helper =& $this->Application->recallObject('PermissionsHelper');
	$owner_field = $this->getOwnerField($event->Prefix);

	if ($perm_helper->ModifyCheckPermission($object->GetDBField($owner_field), $object->GetDBField('CategoryId'), $event->Prefix) == 2) {

	// 1. clone original item
	$temp_handler =& $this->Application->recallObject($event->getPrefixSpecial().'_TempHandler', 'kTempTablesHandler');
	$cloned_ids = $temp_handler->CloneItems($event->Prefix, $event->Special, Array($object->GetID()), null, null, null, true);
	$ci_table = $this->Application->GetTempName(TABLE_PREFIX.'CategoryItems');

	// 2. delete record from CategoryItems (about cloned item) that was automatically created during call of Create method of kCatDBItem
	$sql = 'SELECT ResourceId
	FROM '.$object->TableName.'
	WHERE '.$object->IDField.' = '.$cloned_ids[0];
	$clone_resource_id = $this->Conn->GetOne($sql);

	$sql = 'DELETE FROM '.$ci_table.'
	WHERE ItemResourceId = '.$clone_resource_id.' AND PrimaryCat = 1';
	$this->Conn->Query($sql);

	// 3. copy main item categoryitems to cloned item
	$sql = ' INSERT INTO '.$ci_table.' (CategoryId, ItemResourceId, PrimaryCat, ItemPrefix, Filename)
	SELECT CategoryId, '.$clone_resource_id.' AS ItemResourceId, PrimaryCat, ItemPrefix, Filename
	FROM '.$ci_table.'
	WHERE ItemResourceId = '.$object->GetDBField('ResourceId');
	$this->Conn->Query($sql);

	// 4. put cloned id to OrgId field of item being cloned
	$sql = 'UPDATE '.$object->TableName.'
	SET OrgId = '.$object->GetID().'
	WHERE '.$object->IDField.' = '.$cloned_ids[0];
	$this->Conn->Query($sql);

	// 5. substitute id of item being cloned with clone id
	$this->Application->SetVar($event->getPrefixSpecial().'_id', $cloned_ids[0]);

	$selected_ids = $this->getSelectedIDs($event, true);
	$selected_ids[ array_search($object->GetID(), $selected_ids) ] = $cloned_ids[0];
	$this->StoreSelectedIDs($event, $selected_ids);

	// 6. delete original item from temp table
	$temp_handler->DeleteItems($event->Prefix, $event->Special, Array($object->GetID()));
	}
	}
	}

	/**
	* Sets default expiration based on module setting
	*
	* @param kEvent $event
	*/
	function OnPreCreate(&$event)
	{
	parent::OnPreCreate($event);

	if ($event->status == erSUCCESS) {
	$object =& $event->getObject();
	$owner_field = $this->getOwnerField($event->Prefix);

	$object->SetDBField($owner_field, $this->Application->RecallVar('user_id'));
	}
	}

	/**
	* Occures before original item of item in pending editing got deleted (for hooking only)
	*
	* @param kEvent $event
	*/
	function OnBeforeDeleteOriginal(&$event)
	{

	}

	/**
	* Occures before an item is cloneded
	* Id of ORIGINAL item is passed as event' 'id' param
	* Do not call object' Update method in this event, just set needed fields!
	*
	* @param kEvent $event
	*/
	function OnBeforeClone(&$event)
	{
	if ($this->Application->GetVar('ResetCatBeforeClone')) {
	$object =& $event->getObject();
	$object->SetDBField('CategoryId', null);
	}
	}

	/**
	* Set status for new category item based on user permission in category
	*
	* @param kEvent $event
	*/
	function OnBeforeItemCreate(&$event)
	{
	if ($this->Application->isAdminUser) {
	// don't set permission-based status, when creating categories in admin
	return true;
	}

	$use_pending_editing = $this->Application->getUnitOption($event->Prefix, 'UsePendingEditing');
	if ($use_pending_editing) {
	$object =& $event->getObject();
	/* @var $object kDBItem */

	$perm_helper =& $this->Application->recallObject('PermissionsHelper');
	/* @var $perm_helper kPermissionsHelper */

	$primary_category = $object->GetDBField('CategoryId') > 0 ? $object->GetDBField('CategoryId') : $this->Application->GetVar('m_cat_id');
	$item_status = $perm_helper->AddCheckPermission($primary_category, $event->Prefix);
	if ($item_status == STATUS_DISABLED) {
	$event->status = erFAIL;
	return false;
	}
	else {
	$object->SetDBField('Status', $item_status);
	}
	}
	}

	/**
	* Creates category item & redirects to confirmation template (front-end only)
	*
	* @param kEvent $event
	*/
	function OnCreate(&$event)
	{
	parent::OnCreate($event);
	$this->SetFrontRedirectTemplate($event, 'suggest');
	}

	/**
	* Returns item's categories (allows to exclude primary category)
	*
	* @param int $resource_id
	* @param bool $with_primary
	* @return Array
	*/
	function getItemCategories($resource_id, $with_primary = false)
	{
	$sql = 'SELECT CategoryId
	FROM '.TABLE_PREFIX.'CategoryItems
	WHERE (ItemResourceId = '.$resource_id.')';

	if (!$with_primary) {
	$sql .= ' AND (PrimaryCat = 0)';
	}

	return $this->Conn->GetCol($sql);
	}

	/**
	* Adds new and removes old additional categories from category item
	*
	* @param kCatDBItem $object
	*/
	function processAdditionalCategories(&$object, $mode)
	{
	if (!array_key_exists('MoreCategories', $object->VirtualFields)) {
	// given category item doesn't require such type of processing
	return ;
	}

	$process_categories = $object->GetDBField('MoreCategories');
	if ($process_categories === '') {
	// field was not in submit & have default value (when no categories submitted, then value is null)
	return ;
	}

	if ($mode == 'create') {
	// prevents first additional category to become primary
	$object->assignPrimaryCategory();
	}

	$process_categories = $process_categories ? explode('\|', substr($process_categories, 1, -1)) : Array ();
	$existing_categories = $this->getItemCategories($object->GetDBField('ResourceId'));

	$add_categories = array_diff($process_categories, $existing_categories);
	foreach ($add_categories as $category_id) {
	$object->assignToCategory($category_id);
	}

	$remove_categories = array_diff($existing_categories, $process_categories);
	foreach ($remove_categories as $category_id) {
	$object->removeFromCategory($category_id);
	}
	}

	/**
	* Creates category item & redirects to confirmation template (front-end only)
	*
	* @param kEvent $event
	*/
	function OnUpdate(&$event)
	{
	$use_pending = $this->Application->getUnitOption($event->Prefix, 'UsePendingEditing');
	if ($this->Application->isAdminUser \|\| !$use_pending) {
	parent::OnUpdate($event);
	$this->SetFrontRedirectTemplate($event, 'modify');
	return ;
	}

	$object =& $event->getObject(Array('skip_autoload' => true));
	/* @var $object kCatDBItem */

	$items_info = $this->Application->GetVar($event->getPrefixSpecial(true));
	if ($items_info) {
	$perm_helper =& $this->Application->recallObject('PermissionsHelper');
	/* @var $perm_helper kPermissionsHelper */

	$temp_handler =& $this->Application->recallObject($event->getPrefixSpecial().'_TempHandler', 'kTempTablesHandler');
	/* @var $temp_handler kTempTablesHandler */

	$owner_field = $this->getOwnerField($event->Prefix);

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

	foreach ($items_info as $id => $field_values) {
	$object->Load($id);
	$edit_perm = $perm_helper->ModifyCheckPermission($object->GetDBField($owner_field), $object->GetDBField('CategoryId'), $event->Prefix);

	if ($use_pending && !$object->GetDBField('OrgId') && ($edit_perm == STATUS_PENDING)) {
	// pending editing enabled + not pending copy -> get/create pending copy & save changes to it
	$original_id = $object->GetID();
	$original_resource_id = $object->GetDBField('ResourceId');
	$file_helper->PreserveItemFiles($field_values);

	$object->Load($original_id, 'OrgId');
	if (!$object->isLoaded()) {
	// 1. user has no pending copy of live item -> clone live item
	$cloned_ids = $temp_handler->CloneItems($event->Prefix, $event->Special, Array($original_id), null, null, null, true);

	$object->Load($cloned_ids[0]);
	$object->SetFieldsFromHash($field_values);

	// 1a. delete record from CategoryItems (about cloned item) that was automatically created during call of Create method of kCatDBItem
	$ci_table = $this->Application->getUnitOption('ci', 'TableName');
	$sql = 'DELETE FROM '.$ci_table.'
	WHERE ItemResourceId = '.$object->GetDBField('ResourceId').' AND PrimaryCat = 1';
	$this->Conn->Query($sql);

	// 1b. copy main item categoryitems to cloned item
	$sql = 'INSERT INTO '.$ci_table.' (CategoryId, ItemResourceId, PrimaryCat, ItemPrefix, Filename)
	SELECT CategoryId, '.$object->GetDBField('ResourceId').' AS ItemResourceId, PrimaryCat, ItemPrefix, Filename
	FROM '.$ci_table.'
	WHERE ItemResourceId = '.$original_resource_id;
	$this->Conn->Query($sql);

	// 1c. put cloned id to OrgId field of item being cloned
	$object->SetDBField('Status', STATUS_PENDING_EDITING);
	$object->SetDBField('OrgId', $original_id);
	}
	else {
	// 2. user has pending copy of live item -> just update field values
	$object->SetFieldsFromHash($field_values);
	}

	// update id in request (used for redirect in mod-rewrite mode)
	$this->Application->SetVar($event->getPrefixSpecial().'_id', $object->GetID());
	}
	else {
	// 3. already editing pending copy -> just update field values
	$object->SetFieldsFromHash($field_values);
	}

	if ($object->Update()) {
	$event->status = erSUCCESS;
	}
	else {
	$event->status = erFAIL;
	$event->redirect = false;
	break;
	}
	}
	}

	$this->SetFrontRedirectTemplate($event, 'modify');
	}

	/**
	* Sets next template to one required for front-end after adding/modifying item
	*
	* @param kEvent $event
	* @param string $template_key - {suggest,modify}
	*/
	function SetFrontRedirectTemplate(&$event, $template_key)
	{
	if ($this->Application->isAdminUser \|\| $event->status != erSUCCESS) {
	return ;
	}

	// prepare redirect template
	$object =& $event->getObject();
	$is_active = ($object->GetDBField('Status') == STATUS_ACTIVE);

	$next_template = $is_active ? 'confirm_template' : 'pending_confirm_template';
	$event->redirect = $this->Application->GetVar($template_key.'_'.$next_template);
	$event->SetRedirectParam('opener', 's');

	// send email events
	$perm_prefix = $this->Application->getUnitOption($event->Prefix, 'PermItemPrefix');
	switch ($event->Name) {
	case 'OnCreate':
	$event_suffix = $is_active ? 'ADD' : 'ADD.PENDING';
	$owner_field = $this->getOwnerField($event->Prefix);

	$this->Application->EmailEventAdmin($perm_prefix.'.'.$event_suffix); // there are no ADD.PENDING event for admin :(
	$this->Application->EmailEventUser($perm_prefix.'.'.$event_suffix, $object->GetDBField($owner_field));
	break;

	case 'OnUpdate':
	$event_suffix = $is_active ? 'MODIFY' : 'MODIFY.PENDING';
	$this->Application->EmailEventAdmin($perm_prefix.'.'.$event_suffix); // there are no ADD.PENDING event for admin :(
	$this->Application->EmailEventUser($perm_prefix.'.'.$event_suffix, $object->GetDBField('ModifiedById'));
	break;
	}
	}

	/**
	* Apply same processing to each item beeing selected in grid
	*
	* @param kEvent $event
	* @access private
	*/
	function iterateItems(&$event)
	{
	if ($event->Name != 'OnMassApprove' && $event->Name != 'OnMassDecline') {
	return parent::iterateItems($event);
	}

	if ($this->Application->CheckPermission('SYSTEM_ACCESS.READONLY', 1)) {
	$event->status = erFAIL;
	return;
	}

	$object =& $event->getObject( Array('skip_autoload' => true) );
	$ids = $this->StoreSelectedIDs($event);

	if ($ids) {
	foreach ($ids as $id) {
	$object->Load($id);

	switch ($event->Name) {
	case 'OnMassApprove':
	$ret = $object->ApproveChanges();
	break;

	case 'OnMassDecline':
	$ret = $object->DeclineChanges();
	break;
	}

	if (!$ret) {
	$event->status = erFAIL;
	$event->redirect = false;
	break;
	}
	}
	}

	$this->clearSelectedIDs($event);
	}

	/**
	* Deletes items & preserves clean env
	*
	* @param kEvent $event
	*/
	function OnDelete(&$event)
	{
	parent::OnDelete($event);

	if ($event->status == erSUCCESS && !$this->Application->isAdmin) {
	$event->SetRedirectParam('pass', 'm');
	$event->SetRedirectParam('m_cat_id', 0);
	}
	}

	/**
	* Checks, that currently loaded item is allowed for viewing (non permission-based)
	*
	* @param kEvent $event
	* @return bool
	*/
	function checkItemStatus(&$event)
	{
	$object =& $event->getObject();
	if (!$object->isLoaded()) {
	$this->_errorNotFound($event);

	return true;
	}

	$status = $object->GetDBField('Status');
	$user_id = $this->Application->RecallVar('user_id');
	$owner_field = $this->getOwnerField($event->Prefix);

	if (($status == STATUS_PENDING_EDITING \|\| $status == STATUS_PENDING) && ($object->GetDBField($owner_field) == $user_id)) {
	return true;
	}

	return $status == STATUS_ACTIVE;
	}

	/**
	* Set's correct sorting for list
	* based on data provided with event
	*
	* @param kEvent $event
	* @access private
	* @see OnListBuild
	*/
	function SetSorting(&$event)
	{
	if (!$this->Application->isAdmin) {
	$event->setEventParam('same_special', true);
	}

	parent::SetSorting($event);
	}

	/**
	* Returns current per-page setting for list
	*
	* @param kEvent $event
	* @return int
	*/
	function getPerPage(&$event)
	{
	if (!$this->Application->isAdmin) {
	$event->setEventParam('same_special', true);
	}

	return parent::getPerPage($event);
	}

	function getOwnerField($prefix)
	{
	$owner_field = $this->Application->getUnitOption($prefix, 'OwnerField');
	if (!$owner_field) {
	$owner_field = 'CreatedById';
	}

	return $owner_field;
	}

	/**
	* Creates virtual image fields for item
	*
	* @param kEvent $event
	*/
	function OnAfterConfigRead(&$event)
	{
	parent::OnAfterConfigRead($event);

	if (defined('IS_INSTALL') && IS_INSTALL) {
	return ;
	}

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

	$file_helper->createItemFiles($event->Prefix, true); // create image fields
	$file_helper->createItemFiles($event->Prefix, false); // create file fields

	// add EditorsPick to ForcedSorting if needed
	$config_mapping = $this->Application->getUnitOption($event->Prefix, 'ConfigMapping');
	if (array_key_exists('ForceEditorPick', $config_mapping) && $this->Application->ConfigValue($config_mapping['ForceEditorPick'])) {
	$list_sortings = $this->Application->getUnitOption($event->Prefix, 'ListSortings');

	$new_forced_sorting = Array ('EditorsPick' => 'DESC');

	if (array_key_exists('ForcedSorting', $list_sortings[''])) {
	foreach ($list_sortings['']['ForcedSorting'] as $sort_field => $sort_order) {
	$new_forced_sorting[$sort_field] = $sort_order;
	}
	}
	$list_sortings['']['ForcedSorting'] = $new_forced_sorting;

	$this->Application->setUnitOption($event->Prefix, 'ListSortings', $list_sortings);
	}

	// add grids for advanced view (with primary category column)
	$grids = $this->Application->getUnitOption($this->Prefix, 'Grids');
	$process_grids = Array ('Default', 'Radio');
	foreach ($process_grids as $process_grid) {
	$grid_data = $grids[$process_grid];
	$grid_data['Fields']['CachedNavbar'] = Array ('title' => 'la_col_Path', 'data_block' => 'grid_primary_category_td', 'filter_block' => 'grid_like_filter');
	$grids[$process_grid . 'ShowAll'] = $grid_data;
	}
	$this->Application->setUnitOption($this->Prefix, 'Grids', $grids);

	// add options for CategoryId field (quick way to select item's primary category)
	$category_helper =& $this->Application->recallObject('CategoryHelper');
	/* @var $category_helper CategoryHelper */

	$virtual_fields = $this->Application->getUnitOption($event->Prefix, 'VirtualFields');

	$virtual_fields['CategoryId']['default'] = (int)$this->Application->GetVar('m_cat_id');
	$virtual_fields['CategoryId']['options'] = $category_helper->getStructureTreeAsOptions();

	$this->Application->setUnitOption($event->Prefix, 'VirtualFields', $virtual_fields);
	}

	/**
	* Returns file contents associated with item
	*
	* @param kEvent $event
	*/
	function OnDownloadFile(&$event)
	{
	$object =& $event->getObject();
	/* @var $object kDBItem */

	$event->status = erSTOP;

	$field = $this->Application->GetVar('field');
	if (!preg_match('/^File([\d]+)/', $field)) {
	return ;
	}

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

	$filename = $object->GetField($field, 'full_path');
	$file_helper->DownloadFile($filename);
	}

	/**
	* Saves user's vote
	*
	* @param kEvent $event
	*/
	function OnMakeVote(&$event)
	{
	$event->status = erSTOP;

	if ($this->Application->GetVar('ajax') != 'yes') {
	// this is supposed to call from AJAX only
	return ;
	}

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

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

	$object->Load( $this->Application->GetVar('id') );

	echo $rating_helper->makeVote($object);
	}

	/**
	* [HOOK] Allows to add cloned subitem to given prefix
	*
	* @param kEvent $event
	*/
	function OnCloneSubItem(&$event)
	{
	parent::OnCloneSubItem($event);

	if ($event->MasterEvent->Prefix == 'fav') {
	$clones = $this->Application->getUnitOption($event->MasterEvent->Prefix, 'Clones');
	$subitem_prefix = $event->Prefix . '-' . $event->MasterEvent->Prefix;

	$clones[$subitem_prefix]['ParentTableKey'] = 'ResourceId';
	$clones[$subitem_prefix]['ForeignKey'] = 'ResourceId';

	$this->Application->setUnitOption($event->MasterEvent->Prefix, 'Clones', $clones);
	}
	}
	}

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