<?php // $Id: courses.php 12512 2010-08-02 08:26:18Z dkp1060 $
/**
 * CLAROLINE
 *
 * Prupose list of course to enroll or leave
 *
 * @version 1.9 $Revision: 12512 $
 *
 * @copyright (c) 2001-2009 Universite catholique de Louvain (UCL)
 *
 * @license http://www.gnu.org/copyleft/gpl.html (GPL) GENERAL PUBLIC LICENSE
 *
 * @author Claro Team <cvs@claroline.net>
 *
 * @package AUTH
 *
 */

require '../inc/claro_init_global.inc.php';

require_once get_path('incRepositorySys').'/lib/courselist.lib.php';

$nameTools  = get_lang('User\'s course');
$noPHP_SELF = TRUE;

/*---------------------------------------------------------------------
Security Check
---------------------------------------------------------------------*/

if ( ! claro_is_user_authenticated() ) claro_disp_auth_form();
$can_see_hidden_course = claro_is_platform_admin();


/*---------------------------------------------------------------------
Include Files and initialize variables
---------------------------------------------------------------------*/

require_once get_path('incRepositorySys') . '/lib/user.lib.php';
require_once get_path('incRepositorySys') . '/lib/course_user.lib.php';
require_once get_path('incRepositorySys') . '/lib/class.lib.php';
include claro_get_conf_repository() . 'user_profile.conf.php';

$parentCategoryCode = '';
$userSettingMode    = FALSE;
$dialogBox = new DialogBox();
$courseList = array();
$categoryList = array();

/*---------------------------------------------------------------------
Define Display
---------------------------------------------------------------------*/

define ('DISPLAY_USER_COURSES'       ,      __LINE__);
define ('DISPLAY_COURSE_TREE'        ,      __LINE__);
define ('DISPLAY_MESSAGE_SCREEN'     ,      __LINE__);
define ('DISPLAY_REGISTRATION_KEY_FORM',      __LINE__);
define ('DISPLAY_REGISTRATION_DISABLED_FORM', __LINE__);

$displayMode = DISPLAY_USER_COURSES; // default display

/*---------------------------------------------------------------------
Get request variables
---------------------------------------------------------------------*/

if ( isset($_REQUEST['cmd']) ) $cmd = $_REQUEST['cmd'];
else                           $cmd = '';

if ( isset($_REQUEST['uidToEdit']) ) $uidToEdit = (int) $_REQUEST['uidToEdit'];
else                                 $uidToEdit = 0;

if ( isset($_REQUEST['fromAdmin']) && claro_is_platform_admin() ) $fromAdmin = trim($_REQUEST['fromAdmin']);
else                                                              $fromAdmin = '';

if ( isset($_REQUEST['course']) ) $course = trim($_REQUEST['course']);
else                              $course = '';

if ( isset($_REQUEST['category']) ) $category = trim($_REQUEST['category']);
else                                $category = '';

/*=====================================================================
Main Section
=====================================================================*/

/*---------------------------------------------------------------------
Define user we are working with...
---------------------------------------------------------------------*/

$inURL = ''; // parameters to add in URL

if ( !claro_is_platform_admin() )
{
    if (get_conf('allowToSelfEnroll',true))
    {
        $userId    = claro_get_current_user_id(); // default use is enroll for itself...
        $uidToEdit = claro_get_current_user_id();
    }
    else
    {
        claro_redirect('..');
    }

}
else
{
    // security : only platform admin can edit other user than himself...

    if ( isset($fromAdmin)
    && ( $fromAdmin == 'settings' || $fromAdmin == 'usercourse' )
    && !empty($uidToEdit)
    )
    {
        $userSettingMode = TRUE;
    }

    if ( !empty($fromAdmin) ) $inURL .= '&amp;fromAdmin=' . $_REQUEST['fromAdmin'];
    if ( !empty($uidToEdit) ) $inURL .= '&amp;uidToEdit=' . $_REQUEST['uidToEdit'];

    // in admin mode, there 2 possibilities : we might want to enroll themself or either be here from admin tool

    if ( !empty($uidToEdit) )
    {
        $userId = $uidToEdit;
    }
    else
    {
        $userId = claro_get_current_user_id(); // default use is enroll for itself...
        $uidToEdit = claro_get_current_user_id();
    }

} // if (!claro_is_platform_admin())

/*---------------------------------------------------------------------
 Define breadcrumbs
---------------------------------------------------------------------*/

if ( isset($_REQUEST['addNewCourse']) )
{
    ClaroBreadCrumbs::getInstance()->prepend( get_lang('My personal course list'), $_SERVER['PHP_SELF'] );
}

/*---------------------------------------------------------------------
 breadcrumbs is different if we come from admin tool
---------------------------------------------------------------------*/

if ( !empty($fromAdmin) )
{
    if ( $fromAdmin == 'settings' || $fromAdmin == 'usercourse' || $fromAdmin == 'class' )
    {
        ClaroBreadCrumbs::getInstance()->prepend( get_lang('Administration'), get_path('rootAdminWeb') );
    }

    if ( $fromAdmin == 'class' )
    {
        if ( isset($_REQUEST['class_id']) )
        {
            $classId = (int)trim($_REQUEST['class_id']);
            $_SESSION['admin_user_class_id'] = $classId;
        }
        else if (isset($_SESSION['admin_user_class_id']))
        {        
            $classId = (int)$_SESSION['admin_user_class_id'];
        }
        else $classId = '';

        // bred different if we come from admin tool for a CLASS
        $nameTools = get_lang('Enrol class');

        $classinfo = class_get_properties ($_SESSION['admin_user_class_id']);
    }
}

/*---------------------------------------------------------------------
 DB tables initialisation
 Find info about user we are working with
---------------------------------------------------------------------*/

$userInfo = user_get_properties($userId);
if(!$userInfo)
{
    $cmd='';
    switch (claro_failure::get_last_failure())
    {
        case 'user_not_found' :
        {
            $msg = get_lang('User not found');
        }   break;

        default:
        {
            $msg = get_lang('User is not valid');
        }   break;
    }
}


/*----------------------------------------------------------------------------
Unsubscribe from a course
----------------------------------------------------------------------------*/

if ( $cmd == 'exUnreg' )
{
    if ( user_remove_from_course($userId, $course, false, false, false) )
    {
        $claroline->log('COURSE_UNSUBSCRIBE',array('user'=>$userId,'course'=>$course));
        $dialogBox->success( get_lang('Your enrolment on the course has been removed') );
    }
    else
    {
        switch ( claro_failure::get_last_failure() )
        {
            case 'cannot_unsubscribe_the_last_course_manager' :
            {
                $dialogBox->error( get_lang('You cannot unsubscribe the last course manager of the course') );
            } break;
            case 'course_manager_cannot_unsubscribe_himself' :
            {
                $dialogBox->error( get_lang('Course manager cannot unsubscribe himself') );
            } break;
            default : $dialogBox->error( get_lang('Unable to remove your registration to the course') );
        }
    }

    $displayMode = DISPLAY_MESSAGE_SCREEN;
} //if ($cmd == 'exUnreg')

/*----------------------------------------------------------------------------
Subscribe to a course
----------------------------------------------------------------------------*/

if ( $cmd == 'exReg' )
{
    // if user is platform admin, register to private course can be forced.
    // Otherwise not
    if ( is_course_registration_allowed($course) || claro_is_platform_admin())
    {
        $courseRegistrationKey = get_course_registration_key($course);

        if (    claro_is_platform_admin()
        || ( is_null($courseRegistrationKey) || empty($courseRegistrationKey) )
        || (   isset($_REQUEST['registrationKey'] )
        && strtolower(trim($_REQUEST['registrationKey'] )) == strtolower(trim($courseRegistrationKey))) )
        {
            // try to register user
            if ( user_add_to_course($userId, $course, false, false, false) )
            {
                if ( claro_get_current_user_id() != $uidToEdit )
                {
                    // message for admin
                    $dialogBox->success( get_lang('The user has been enroled to the course') );
                }
                else
                {
                    $dialogBox->success( get_lang('You\'ve been enroled on the course') );
                }

                if ( !empty($_REQUEST['asTeacher']) && claro_is_platform_admin() )
                {
                    $properties['isCourseManager'] = 1;
                    $properties['role']   = get_lang('Course manager');
                    $properties['tutor']  = 1;
                    user_set_course_properties($userId, $course, $properties);
                }
            }
            else
            {
                switch (claro_failure::get_last_failure())
                {
                    //TODO Where is set the error ??
                    case 'already_enroled_in_course' :
                    {
                        $dialogBox->warning( get_lang('The user is already enroled in this course') );
                    }   break;
                    default: $dialogBox->error( get_lang('Unable to enrol you to the course') );
                }
            }

            $displayMode = DISPLAY_MESSAGE_SCREEN;

        } // end else if is_null $courseRegistrationKey
        else
        {
            if ( isset($_REQUEST['registrationKey']) )
            {
                $dialogBox->error( get_lang('Wrong enrolment key') );
            }

            $displayMode = DISPLAY_REGISTRATION_KEY_FORM;
        } // end else if is_null $courseRegistrationKey
    }
    else
    {
        $courseData = claro_get_course_data($course);
        $displayMode = DISPLAY_REGISTRATION_DISABLED_FORM;
        
        $explanation = get_locked_course_explanation($course);
        if( $explanation )
        {
            $dialogBox->error( $explanation );
        }
        $dialogBox->info( get_lang('Please contact the course manager : %email' , array ('%email' => '<a href="mailto:'.$courseData['email'] . '?body=' . $courseData['officialCode'] . '&amp;subject=[' . rawurlencode( get_conf('siteName')) . ']' . '">' . htmlspecialchars($courseData['titular']) . '</a>')) );
    }


} // end if ($cmd == 'exReg')

/*----------------------------------------------------------------------------
User course list to unregister
----------------------------------------------------------------------------*/

if ( $cmd == 'rqUnreg' )
{
    $courseList = get_user_course_list($userId);
    $displayMode = DISPLAY_USER_COURSES;
} // if ($cmd == 'rqUnreg')

/*----------------------------------------------------------------------------
Search a course to register
----------------------------------------------------------------------------*/

if ( $cmd == 'rqReg' ) // show course of a specific category
{
    /*
    * Search by keyword
    */

    if ( isset($_REQUEST['keyword']) )
    {
        $title   = get_lang('Select course in search results');
        $keyword = trim($_REQUEST['keyword']);
        $result  = search_course($keyword, $uidToEdit);

        if ( count($result) > 0 )
        {
            $courseList = $result;
        }
        else
        {
            $dialogBox->info( get_lang('No course available fitting this keyword') );
        }

        $displayMode = DISPLAY_COURSE_TREE;

    } // end if isset keyword

    /*
    * Get the courses contained in this category
    */

    else
    {
        if ($fromAdmin == 'class')
            $courseCategoryBrowser = new category_browser($category);
        else
            $courseCategoryBrowser = new category_browser($category, $userId);

        $currentCategory     = $courseCategoryBrowser->get_current_category_settings();
        $currentCategoryName = $currentCategory['name'  ];
        $parentCategoryCode  = $currentCategory['code_P'];

        $categoryList = $courseCategoryBrowser->get_sub_category_list();

        $courseList   = $courseCategoryBrowser->get_course_list();

        $displayMode = DISPLAY_COURSE_TREE;
    }

} // end cmd == rqReg

/*=====================================================================
   Display Section
  =====================================================================*/

/*
* SET 'BACK' LINK
*/

if ( $cmd == 'rqReg' && ( !empty($category) || !empty($parentCategoryCode) ) )
{
    $backUrl   = $_SERVER['PHP_SELF'].'?cmd=rqReg&amp;category=' . urlencode($parentCategoryCode);
    $backLabel = get_lang('Back to parent category');
}
else
{

    if ( $userSettingMode == true ) //enroll page accessed by admin tool to set user settings
    {
        if ( $fromAdmin == 'settings' )
        {
            $backUrl   = '../admin/adminprofile.php?uidToEdit=' . $userId;
            $backLabel = get_lang('Back to user settings');
        }
        if ( $fromAdmin == 'usercourse' ) // admin tool used: list of a user's courses.
        {
            $backUrl   = '../admin/adminusercourses.php?uidToEdit=' . $userId;
            $backLabel = get_lang('Back to user\'s course list');
        }
    }
    elseif ( $fromAdmin == 'class' ) // admin tool used : class registration
    {
        $backUrl   = '../admin/admin_class_user.php?';
        if (isset($_SESSION['admin_user_class_id']))
        {
        	$backUrl .= 'class_id='. $_SESSION['admin_user_class_id'];
        }
        $backLabel = get_lang('Back to the class');
    }
    else
    {
        $backUrl   = '../../index.php?';
        $backLabel = get_lang('Back to my personal course list');
    }
} // ($cmd == 'rqReg' && ($category || ! is_null($parentCategoryCode) ) )

$backUrl .= $inURL; //notify userid of the user we are working with in admin mode and that we come from admin
$backLink = '<p><small><a href="' . $backUrl . '" title="' . $backLabel. '" >&lt;&lt; ' . $backLabel . '</a></small></p>' . "\n\n";

$out = '';

switch ( $displayMode )
{

    /*---------------------------------------------------------------------
    Display course list
    ---------------------------------------------------------------------*/

    case DISPLAY_COURSE_TREE :
    {

        //  Note : if we are at the root category we're at the top of the campus
        //        root name equal platform name
        //        $siteName comes from claro_main.conf.php

        if ( empty($category) ) $currentCategoryName = get_conf('siteName');

        //  Display Title

        if ( $fromAdmin != 'class' )
        {
            $title = get_lang('User\'s course') . ' : ' . $userInfo['firstname'] . ' ' . $userInfo['lastname'];
            $subTitle = get_lang('Select course in') . ' : ' . $currentCategoryName ;

            $out .= claro_html_tool_title( array( 'mainTitle' => $title , 'subTitle' => $subTitle ) ) ;
        }
        else
        {
            $title = get_lang('Enrol class') . ' : ' . $classinfo['name'] ;
            $subTitle = get_lang('Select course in') . ' : ' . $currentCategoryName ;

            $out .= claro_html_tool_title ( array( 'mainTitle' =>  $title , 'subTitle'  => $subTitle ) );
        }

        // Display message

        $out .= $dialogBox->render();

        $out .= $backLink;
        // Display categories

        if ( count($categoryList) > 0)
        {
            $out .= '<h4>' . get_lang('Categories') . '</h4>' . "\n" ;

            $out .= '<ul>' . "\n" ;

            foreach ( $categoryList as $thisCategory )
            {
                if ( $thisCategory['code'] != $category )
                {
                    $out .= '<li>' . "\n";

                    if ($thisCategory['nbCourse'] + $thisCategory['nb_childs'] > 0)
                    {
                        $url = $_SERVER['PHP_SELF'] . '?cmd=rqReg&amp;category=' . urlencode($thisCategory['code']) . $inURL ;

                        $out .= '<a href="' . $url . '">' . $thisCategory['name'] . '</a>' . '&nbsp<small>(' . $thisCategory['nbCourse'] . ')</small>' ;
                    }
                    else
                    {
                        $out .= $thisCategory['name'];
                    }

                    $out .= '</li>' . "\n";
                }
            } // end foreach categoryList

            $out .= '</ul>' . "\n";
        }

        // Separator between category list and course list

        if ( count($courseList) > 0  && count($categoryList) > 0 )
        {
            $out .= '<hr size="1" noshade="noshade" />' . "\n";
        }

        // Course List

        if ( count($courseList) > 0 )
        {
            $out .= '<h4>' . get_lang('Course list') . '</h4>' . "\n"
            .    '<blockquote>' . "\n"
            .    '<table class="claroTable emphaseLine" >' . "\n" ;

            if ( $userSettingMode ) //display links to enroll as student and also as teacher (but not for a class)
            {

                $out .= '<thead>' . "\n"
                .    '<tr class="headerX">' . "\n"
                .    '<th>&nbsp;</th>' . "\n"
                .    '<th>' . get_lang('Enrol as student') . '</th>' . "\n"
                .    '<th>' . get_lang('Enrol as teacher') . '</th>' . "\n"
                .    '<tr>' . "\n"
                .    '</thead>' . "\n"
                ;
            }
            elseif ( $fromAdmin == 'class' )
            {
                $out .= '<thead>' . "\n"
                .    '<tr class="headerX">' . "\n"
                .    '<th>&nbsp;</th>' . "\n"
                .    '<th>' . get_lang('Enrol class') . '</th>' . "\n"
                .    '</tr>' . "\n"
                .    '</thead>' . "\n"
                ;
            }

            $out .= '<tbody>' . "\n";

            foreach($courseList as $thisCourse)
            {
                $out .= '<tr>' . "\n"
                .    '<td>' . $thisCourse['officialCode'] . ' - ' . $thisCourse['title'] . '<br />' . "\n"
                .     '<small>';

                if( !empty($thisCourse['email']) )
                {
                    $out .= '<a href="mailto:'.$thisCourse['email'].'">' . $thisCourse['titular'] . '</a>';
                }
                else
                {
                    $out .= $thisCourse['titular'];
                }

                $out .= '</small>' . "\n" . '</td>' . "\n";

                // enroll link

                if ( $userSettingMode )
                {
                    if ( $thisCourse['enroled'] )
                    {
                        $out .= '<td valign="top" colspan="2" align="center">' . "\n"
                        .    '<span class="highlight">' . get_lang('Already enroled') . '</span>'
                        .    '</td>' . "\n"
                        ;
                    }
                    else
                    {
                        // class may not be enroled as teachers

                        $out .= '<td valign="top" align="center">' . "\n"
                        .    '<a href="' . $_SERVER['PHP_SELF'] . '?cmd=exReg&amp;course=' . $thisCourse['sysCode'] . $inURL . '">'
                        .    '<img src="' . get_icon_url('enroll') . '" alt="' . get_lang('Enrol as student') . '" />'
                        .    '</a></td>' . "\n"
                        .    '<td valign="top" align="center">' . "\n"
                        .    '<a href="' . $_SERVER['PHP_SELF'] . '?cmd=exReg&amp;asTeacher=true&amp;course=' . $thisCourse['sysCode'] .$inURL . '">'
                        .    '<img src="' . get_icon_url('enroll') . '"  alt="' . get_lang('Enrol as teacher') . '" />'
                        .    '</a>'
                        .    '</td>' . "\n"
                        ;
                    }
                }
                elseif ( $fromAdmin == 'class')
                {
                    $classEnroled = false;
                    $classes = get_class_list_of_course($thisCourse['sysCode']);
                    foreach ($classes as $thisClass)
                    {
                        if ($classId == $thisClass['id']) $classEnroled = true;
                    }
                    
                    if (!$classEnroled)
                    {
                        $out .= '<td valign="top"  align="center">' . "\n"
                        .    '<a href="' . get_path('clarolineRepositoryWeb') . 'admin/admin_class_course_registered.php'
                        .    '?cmd=exReg' 
                        .    '&amp;course_id=' . $thisCourse['sysCode']
                        .    '&amp;class_id=' . $classinfo['id'] . $inURL . '">'
                        .    '<img src="' . get_icon_url('enroll') . '" alt="' . get_lang('Enrol class') . '" />'
                        .    '</a>'
                        .    '</td>' . "\n"
                        ;
                    }
                    else
                    {
                        $out .= '<td valign="top"  align="center">' . "\n"
                        .    '<a href="' . get_path('clarolineRepositoryWeb') . 'admin/admin_class_course_registered.php'
                        .    '?cmd=exUnreg' 
                        .    '&amp;course_id=' . $thisCourse['sysCode']
                        .    '&amp;class_id=' . $classinfo['id'] . $inURL . '">'
                        .    '<img src="' . get_icon_url('unenroll') . '" alt="' . get_lang('Unenrol class') . '" />'
                        .     '</a>'
                        .     '</td>' . "\n"
                        ;
                    }
                }
                else
                {
                    $out .= '<td valign="top">' . "\n";
                    if ( $thisCourse['enroled'] )
                    {
                        $out .= '<span class="highlight">' . get_lang('Already enroled') . '</span>' . "\n";
                    }
                    elseif($thisCourse['registration'] == 'open')
                    {
                        $out .= '<a href="' . $_SERVER['PHP_SELF']
                        .    '?cmd=exReg&amp;course=' . $thisCourse['sysCode'] . $inURL . '">'
                        .    '<img src="' . get_icon_url('enroll') . '" alt="' . get_lang('Enrolment') . '" />'
                        .    '</a>'
                        ;
                    }
                    else
                    {
                        $out .= '<a href="' . $_SERVER['PHP_SELF']
                        .    '?cmd=exReg&amp;course=' . $thisCourse['sysCode'] . $inURL . '">'
                        .    '<img src="' . get_icon_url('locked') . '" alt="' . get_lang('Locked') . '" />'
                        .    '</a>'
                        ;
                    }
                    // It's not pretty, can be enjoyed to show the protected courses.
                    if ( $can_see_hidden_course && $thisCourse['visibility']=='invisible') $out .= '('.get_lang('Invisible').')';
                    $out .= '</td>' . "\n";

                }

                $out .= '</tr>' . "\n";

            } // end foreach courseList

            $out .= '</tbody>' . "\n"
            .    '</table>' . "\n"
            .    '</blockquote>' . "\n"
            ;
        }

        // Form: Search a course with a keyword

        $out .= '<blockquote>' . "\n"
        .    '<p><label for="keyword">' . get_lang('Search from keyword') . '</label> : </p>' . "\n"
        .    '<form method="post" action="' . $_SERVER['PHP_SELF'] . '">' . "\n"
        .    '<input type="hidden" name="cmd" value="rqReg" />' . "\n"
        .    '<input type="hidden" name="fromAdmin" value="' . $fromAdmin . '" />' . "\n"
        .    '<input type="hidden" name="uidToEdit" value="' . $uidToEdit . '" />' . "\n"
        .    '<input type="text" name="keyword" id="keyword" />' . "\n"
        .    '&nbsp;<input type="submit" value="' . get_lang('Search') . '" />' . "\n"
        .    '</form>' . "\n"
        .    '</blockquote>' . "\n"
        ;
    }   break;

    /*---------------------------------------------------------------------
    Display message
    ---------------------------------------------------------------------*/

    case DISPLAY_MESSAGE_SCREEN :
    {

        $out .= claro_html_tool_title(get_lang('User\'s course') . ' : ' . $userInfo['firstname'] . ' ' . $userInfo['lastname'] );

        $out .= $dialogBox->render();

    }   break;

    /*---------------------------------------------------------------------
    Display user courses ( Default display)
    ---------------------------------------------------------------------*/

    case DISPLAY_USER_COURSES :
    {

        $out .= claro_html_tool_title( array('mainTitle' => get_lang('User\'s course') . ' : ' . $userInfo['firstname'] . ' ' . $userInfo['lastname'],
        'subTitle' => get_lang('Remove course from your personal course list')));
        
        $out .= $dialogBox->render();
        
        if ( count($courseList) > 0 )
        {
            $out .= '<blockquote>' . "\n"
            .    '<table class="claroTable">' . "\n"
            ;

            foreach ($courseList as $thisCourse)
            {
                $out .= '<tr>' . "\n"
                .    '<td>' . "\n"
                .    $thisCourse['title'] . '<br />' . "\n"
                .    '<small>' . $thisCourse['officialCode'] . ' - ' . $thisCourse['titular'] . '</small>'
                .    '</td>' . "\n"
                .    '<td>' . "\n"
                ;

                if ( $thisCourse['isCourseManager'] != 1 )
                {
                    $out .= '<a href="' . $_SERVER['PHP_SELF'] . '?cmd=exUnreg&amp;course=' . $thisCourse['sysCode'] . $inURL . '"'
                    .    ' onclick="javascript:if(!confirm(\''
                    .    clean_str_for_javascript(get_lang('Are you sure you want to remove this course from your list ?'))
                    .    '\')) return false;">' . "\n"
                    .    '<img src="' . get_icon_url('unenroll') . '" alt="' . get_lang('Unsubscribe') . '" />' . "\n"
                    .    '</a>' . "\n"
                    ;
                }
                else
                {
                    $out .= '<span class="highlight">'
                    .    get_lang('Course manager')
                    .    '</span>' . "\n"
                    ;
                }

                $out .= '</td>' . "\n"
                .    '</tr>' . "\n"
                ;
            } // foreach $courseList as $thisCourse

            $out .= '</table>' . "\n"
            .    '</blockquote>' . "\n"
            ;
        }
    }
    break;

    case DISPLAY_REGISTRATION_KEY_FORM :
    {
        $courseData = claro_get_course_data($_REQUEST['course']);
        $courseName = $courseData['name'];
        
        $out .= claro_html_tool_title( array('mainTitle' => get_lang('User\'s course') . ' : ' . $userInfo['firstname'] . ' ' . $userInfo['lastname'],
        'subTitle' => get_lang('Enrol to %course', array('%course' => $courseName) )));
        
        $dialogBox->title(get_lang('This course requires a key for enrolment'));
        
        $dialogBox->form('<p><small>(' . get_lang('If you do not have the key, please contact the course manager') . ')</small></p>' . "\n"
        .     get_locked_course_by_key_explanation($course)
        .     '<form action="' . $_SERVER['PHP_SELF'] . '" method="POST">' . "\n"
        .     '<input type="hidden" name="cmd" value="exReg" />' . "\n"
        .     get_lang('Enrolment key')
        .     ' : '
        .     '<input type="hidden" name="course" value="' . $_REQUEST['course'] . '" />'
        .     '<input type="text" name="registrationKey" />' . "\n"
        .     '<p>'
        .     '<input type="submit" value="' . get_lang('Ok') . '" />&nbsp;' . "\n"
        .     claro_html_button($_SERVER['PHP_SELF'].'?cmd=rqReg', get_lang('Cancel'))
        .     '</p>'
        .     '</form>' . "\n")
        ;
        
        $out .= $dialogBox->render();
        
    }   break;

    case DISPLAY_REGISTRATION_DISABLED_FORM :
    {

        if ( empty($courseData['email']) ) $courseData['email'] = get_conf('administrator_email');
        if ( empty($courseData['titular']) ) $courseData['titular'] = get_conf('administrator_name');

        $out .= $dialogBox->render();

    }   break;


} // end of switch ($displayMode)

$out .= $backLink;

$claroline->display->body->appendContent($out);

echo $claroline->display->render();

?>
