class.ilContainerSortingSettings.php

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<?php
/*
        +-----------------------------------------------------------------------------+
        | ILIAS open source                                                           |
        +-----------------------------------------------------------------------------+
        | Copyright (c) 1998-2006 ILIAS open source, University of Cologne            |
        |                                                                             |
        | This program is free software; you can redistribute it and/or               |
        | modify it under the terms of the GNU General Public License                 |
        | as published by the Free Software Foundation; either version 2              |
        | of the License, or (at your option) any later version.                      |
        |                                                                             |
        | This program is distributed in the hope that it will be useful,             |
        | but WITHOUT ANY WARRANTY; without even the implied warranty of              |
        | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the               |
        | GNU General Public License for more details.                                |
        |                                                                             |
        | You should have received a copy of the GNU General Public License           |
        | along with this program; if not, write to the Free Software                 |
        | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA. |
        +-----------------------------------------------------------------------------+
*/

include_once './Services/Container/classes/class.ilContainer.php';

class ilContainerSortingSettings
{
        protected $obj_id;
        protected $sort_mode;
        
        protected $db;
        
        public function __construct($a_obj_id)
        {
                global $ilDB;
                
                $this->obj_id = $a_obj_id;
                $this->db = $ilDB;
                
                $this->read();
        }
        
        public static function _readSortMode($a_obj_id)
        {
                global $ilDB;
                
                $query = "SELECT * FROM container_sorting_set ".
                        "WHERE obj_id = ".$ilDB->quote($a_obj_id ,'integer')." ";
                $res = $ilDB->query($query);
                
                while($row = $res->fetchRow(DB_FETCHMODE_OBJECT))
                {
                        return $row->sort_mode;
                }
                return ilContainer::SORT_INHERIT;
        }


        public static function _lookupSortMode($a_obj_id)
        {
                global $tree, $ilDB, $objDefinition;
                
                // Try to read from table
                $query = "SELECT * FROM container_sorting_set ".
                        "WHERE obj_id = ".$ilDB->quote($a_obj_id ,'integer')." ";
                $res = $ilDB->query($query);
                
                while($row = $res->fetchRow(DB_FETCHMODE_OBJECT))
                {
                        if($row->sort_mode != ilContainer::SORT_INHERIT)
                        {
                                return $row->sort_mode;
                        }
                }
                return self::lookupSortModeFromParentContainer($a_obj_id);
        }
        
        public static function lookupSortModeFromParentContainer($a_obj_id)
        {
                global $tree, $ilDB, $objDefinition;

                if(!$objDefinition->isContainer(ilObject::_lookupType($a_obj_id)))
                {
                        return ilContainer::SORT_TITLE;
                }
                
                $ref_ids = ilObject::_getAllReferences($a_obj_id);
                $ref_id = current($ref_ids);

                
                if($cont_ref_id = $tree->checkForParentType($ref_id,'grp'))
                {
                        $a_obj_id = ilObject::_lookupObjId($cont_ref_id);
                        $sort_mode = self::_readSortMode($a_obj_id);
                        if($sort_mode != ilContainer::SORT_INHERIT)
                        {
                                return $sort_mode;
                        }
                }
                if($cont_ref_id = $tree->checkForParentType($ref_id,'crs'))
                {
                        $a_obj_id = ilObject::_lookupObjId($cont_ref_id);
                        $sort_mode = self::_readSortMode($a_obj_id);
                        if($sort_mode != ilContainer::SORT_INHERIT)
                        {
                                return $sort_mode;
                        }
                }
                return ilContainer::SORT_TITLE;
        }
        
        
        public function _isManualSortingEnabled($a_obj_id)
        {
                return self::_lookupSortMode($a_obj_id) == ilContainer::SORT_MANUAL;
        }
        
        public static function _cloneSettings($a_old_id,$a_new_id)
        {
                global $ilLog;
                global $ilDB;
                
                $query = "SELECT sort_mode FROM container_sorting_set ".
                        "WHERE obj_id = ".$ilDB->quote($a_old_id ,'integer')." ";
                $res = $ilDB->query($query);
                while($row = $res->fetchRow())
                {
                        $query = "DELETE FROM container_sorting_set ".
                                "WHERE obj_id = ".$ilDB->quote($a_new_id)." ";
                        $ilDB->manipulate($query);

                        $query = "INSERT INTO container_sorting_set  (obj_id,sort_mode) ".
                                "VALUES( ".
                                $ilDB->quote($a_new_id ,'integer').", ".
                                $ilDB->quote($row[0] ,'integer')." ".
                                ")";
                        $ilDB->manipulate($query);
                }
                return true;
        }
        
        public function getSortMode()
        {
                return $this->sort_mode ? $this->sort_mode : 0;
        }
        
        public function setSortMode($a_mode)
        {
                $this->sort_mode = (int) $a_mode;
        }
        
        public function update()
        {
                global $ilDB;
                
                $query = "DELETE FROM container_sorting_set ".
                        "WHERE obj_id = ".$ilDB->quote($this->obj_id,'integer');
                $res = $ilDB->manipulate($query);
                
                $this->save();
        }

        public function save()
        {
                global $ilDB;

                $query = "INSERT INTO container_sorting_set (obj_id,sort_mode) ".
                        "VALUES ( ".
                        $this->db->quote($this->obj_id ,'integer').", ".
                        $this->db->quote($this->sort_mode ,'integer')." ".
                        ")";
                $res = $ilDB->manipulate($query);
        }
        
        public function delete()
        {
                global $ilDB;
                
                $query = 'DELETE FROM container_sorting_set WHERE obj_id = '.$ilDB->quote($this->obj_id,'integer');
                $ilDB->query($query);
        }
        
        protected function read()
        {
                if(!$this->obj_id)
                {
                        return TRUE;
                }
                
                $query = "SELECT * FROM container_sorting_set ".
                        "WHERE obj_id = ".$this->db->quote($this->obj_id ,'integer')." ";
                        
                $res = $this->db->query($query);
                while($row = $res->fetchRow(DB_FETCHMODE_OBJECT))
                {
                        $this->sort_mode = $row->sort_mode;
                        return TRUE;
                }
        }
        
        public static function sortModeToString($a_sort_mode)
        {
                global $lng;
                
                $lng->loadLanguageModule('crs');
                switch($a_sort_mode)
                {
                        case ilContainer::SORT_ACTIVATION:
                                return $lng->txt('crs_sort_activation');
                                
                        case ilContainer::SORT_MANUAL:
                                return $lng->txt('crs_sort_manual');

                        case ilContainer::SORT_TITLE:
                                return $lng->txt('crs_sort_title');
                                 
                }
                return '';
        }
}
?>