class.ilObjSessionListGUI.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/Object/classes/class.ilObjectListGUI.php');


class ilObjSessionListGUI extends ilObjectListGUI
{
    protected $app_info = array();
    
    
    public function __construct()
    {
        global $DIC;

        $lng = $DIC['lng'];
        
        $lng->loadLanguageModule('crs');
        $lng->loadLanguageModule('sess');
        
        parent::__construct();
    }
    
    public function init()
    {
        $this->delete_enabled = true;
        $this->cut_enabled = true;
        $this->copy_enabled = true;
        $this->subscribe_enabled = true;
        $this->link_enabled = true;
        $this->info_screen_enabled = true;
        $this->subitems_enabled = true;
        $this->type = "sess";
        $this->gui_class_name = "ilobjsessiongui";
        
        $this->substitutions = ilAdvancedMDSubstitution::_getInstanceByObjectType($this->type);
        $this->enableSubstitutions($this->substitutions->isActive());

        // general commands array
        include_once('./Modules/Session/classes/class.ilObjSessionAccess.php');
        $this->commands = ilObjSessionAccess::_getCommands();
    }
    
    public function getTitle()
    {
        $app_info = $this->getAppointmentInfo();
        $title = strlen($this->title) ? (': ' . $this->title) : '';
        return ilSessionAppointment::_appointmentToString($app_info['start'], $app_info['end'], $app_info['fullday']) . $title;
    }
    
    
    
    public function getCommandLink($a_cmd)
    {
        global $DIC;

        $ilCtrl = $DIC['ilCtrl'];
        
        // separate method for this line
        $ilCtrl->setParameterByClass("ilrepositorygui", "ref_id", $this->ref_id);
        $cmd_link = $ilCtrl->getLinkTargetByClass("ilrepositorygui", $a_cmd);
        $ilCtrl->setParameterByClass("ilrepositorygui", "ref_id", $_GET["ref_id"]);
        return $cmd_link;
    }
    
    public function checkCommandAccess($a_permission, $a_cmd, $a_ref_id, $a_type, $a_obj_id = "")
    {
        if ($a_cmd != 'register' and $a_cmd != 'unregister') {
            $a_cmd = '';
        }
        return parent::checkCommandAccess($a_permission, $a_cmd, $a_ref_id, $a_type, $a_obj_id);
    }
    
    
    public function getProperties()
    {
        $app_info = $this->getAppointmentInfo();
        
        /*
        $props[] = array(
            'alert'             => false,
            'property'  => $this->lng->txt('event_date'),
            'value'             => ilSessionAppointment::_appointmentToString($app_info['start'],$app_info['end'],$app_info['fullday']));
        */
        include_once './Modules/Session/classes/class.ilObjSession.php';
        $session_data = new ilObjSession($this->obj_id, false);
        include_once './Modules/Session/classes/class.ilSessionParticipants.php';
        $part = ilSessionParticipants::getInstance($this->ref_id);

        if ($session_data->isRegistrationUserLimitEnabled()) {
            if ($part->getCountMembers() <= $session_data->getRegistrationMaxUsers()) {
                $props[] = array(
                    'alert' => false,
                    'property' => $this->lng->txt('sess_list_reg_limit_places'),
                    'value' => max(
                        0,
                        $session_data->getRegistrationMaxUsers() - $part->getCountMembers()
                    )
                );
            }
        }
        
        if ($this->getDetailsLevel() == ilObjectListGUI::DETAILS_MINIMAL) {
            if ($items = self::lookupAssignedMaterials($this->obj_id)) {
                $props[] = array(
                    'alert' => false,
                    'property' => $this->lng->txt('event_ass_materials_prop'),
                    'value' => count($items)
                );
            }
        }
        if ($this->getDetailsLevel() == ilObjectListGUI::DETAILS_ALL) {
            include_once './Modules/Session/classes/class.ilObjSession.php';
            $session_data = ilObjSession::lookupSession($this->obj_id);
            
            if (strlen($session_data['location'])) {
                $props[] = array(
                    'alert' => false,
                    'property' => $this->lng->txt('event_location'),
                    'value' => $session_data['location']
                );
            }
            if (strlen($session_data['details'])) {
                $props[] = array(
                    'alert' => false,
                    'property' => $this->lng->txt('event_details_workflow'),
                    'value' => nl2br($session_data['details']),
                    'newline' => true
                );
            }
            $has_new_line = false;
            if (strlen($session_data['name'])) {
                $props[] = array(
                    'alert' => false,
                    'property' => $this->lng->txt('event_lecturer'),
                    'value' => $session_data['name'],
                    'newline' => true
                );
                $has_new_line = true;
            }
            if (strlen($session_data['email'])) {
                $props[] = array(
                    'alert' => false,
                    'property' => $this->lng->txt('tutor_email'),
                    'value' => $session_data['email'],
                    'newline' => $has_new_line ? false : true
                );
                $has_new_line = true;
            }
            if (strlen($session_data['phone'])) {
                $props[] = array(
                    'alert' => false,
                    'property' => $this->lng->txt('tutor_phone'),
                    'value' => $session_data['phone'],
                    'newline' => $has_new_line ? false : true
                );
                $has_new_line = true;
            }
        }

        return $props;
    }

    
    
    protected function getAppointmentInfo()
    {
        if (isset($this->app_info[$this->obj_id])) {
            return $this->app_info[$this->obj_id];
        }
        include_once('./Modules/Session/classes/class.ilSessionAppointment.php');
        return $this->app_info[$this->obj_id] = ilSessionAppointment::_lookupAppointment($this->obj_id);
    }
    
    protected static function lookupAssignedMaterials($a_sess_id)
    {
        global $DIC;

        $ilDB = $DIC['ilDB'];
        
        $query = 'SELECT * FROM event_items ei ' .
                'JOIN tree ON item_id = child ' .
                'WHERE event_id = ' . $ilDB->quote($a_sess_id, 'integer') . ' ' .
                'AND tree > 0';
        $res = $ilDB->query($query);
        while ($row = $res->fetchRow(ilDBConstants::FETCHMODE_OBJECT)) {
            $items[] = $row->item_id;
        }
        return $items ? $items : array();
    }
}