class.ilSessionOverviewGUI.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. |
        +-----------------------------------------------------------------------------+
*/

class ilSessionOverviewGUI
{
        protected $course_ref_id = null;
        protected $course_id = null;

        protected $lng;
        protected $tpl;
        protected $ctrl;

        public function __construct($a_crs_ref_id, ilParticipants $a_members)
        {
                global $tpl, $ilCtrl, $lng;
                
                $this->ctrl = $ilCtrl;
                $this->tpl = $tpl;
                $this->lng = $lng;
                $this->lng->loadLanguageModule('event');
                $this->lng->loadLanguageModule('crs');
                
                $this->course_ref_id = $a_crs_ref_id;
                $this->course_id = ilObject::_lookupObjId($this->course_ref_id);
                $this->members_obj = $a_members;
        }
        
        public function executeCommand()
        {
                $next_class = $this->ctrl->getNextClass($this);
                $cmd = $this->ctrl->getCmd();
                
                switch($next_class)
                {
                        default:
                                if(!$cmd)
                                {
                                        $cmd = "listSessions";
                                }
                                $this->$cmd();
                                break;
                }
        }
        public function listSessions()
        {
                global $ilToolbar,$ilErr,$ilAccess;

                if(!$ilAccess->checkAccess('write','',$this->course_ref_id))
                {
                        $ilErr->raiseError($this->lng->txt('msg_no_perm_read'),$ilErr->MESSAGE);
                }
                
                $ilToolbar->addButton($this->lng->txt('event_csv_export'),
                        $this->ctrl->getLinkTarget($this,'exportCSV'));
                
                include_once 'Modules/Session/classes/class.ilSessionOverviewTableGUI.php';
                $tbl = new ilSessionOverviewTableGUI($this, 'listSessions', $this->course_ref_id, $this->members_obj->getParticipants());
                $this->tpl->setContent($tbl->getHTML());                
        }

        public function exportCSV()
        {
                global $tree,$ilAccess;
                
                include_once('Services/Utilities/classes/class.ilCSVWriter.php');
                include_once 'Modules/Session/classes/class.ilEventParticipants.php';
                
                $members = $this->members_obj->getParticipants();
                $members = ilUtil::_sortIds($members,'usr_data','lastname','usr_id');           

                $events = array();
                foreach($tree->getSubtree($tree->getNodeData($this->course_ref_id),false,'sess') as $event_id)
                {
                        $tmp_event = ilObjectFactory::getInstanceByRefId($event_id,false);
                        if(!is_object($tmp_event) or !$ilAccess->checkAccess('write','',$event_id)) 
                        {
                                continue;
                        }
                        $events[] = $tmp_event;
                }
                
                $this->csv = new ilCSVWriter();
                $this->csv->addColumn($this->lng->txt("lastname"));
                $this->csv->addColumn($this->lng->txt("firstname"));
                $this->csv->addColumn($this->lng->txt("login"));
                
                foreach($events as $event_obj)
                {                       
                        // TODO: do not export relative dates
                        $this->csv->addColumn($event_obj->getTitle().' ('.$event_obj->getFirstAppointment()->appointmentToString().')');
                }
                
                $this->csv->addRow();
                
                foreach($members as $user_id)
                {
                        $name = ilObjUser::_lookupName($user_id);
                        
                        $this->csv->addColumn($name['lastname']);
                        $this->csv->addColumn($name['firstname']);
                        $this->csv->addColumn(ilObjUser::_lookupLogin($user_id));
                        
                        foreach($events as $event_obj)
                        {                       
                                $event_part = new ilEventParticipants((int) $event_obj->getId());
                                
                                $this->csv->addColumn($event_part->hasParticipated($user_id) ?
                                                                                $this->lng->txt('event_participated') :
                                                                                $this->lng->txt('event_not_participated'));
                        }
                        
                        $this->csv->addRow();
                }
                $date = new ilDate(time(),IL_CAL_UNIX);
                ilUtil::deliverData($this->csv->getCSVString(),$date->get(IL_CAL_FKT_DATE,'Y-m-d')."_course_events.csv", "text/csv");
        }
}
?>