You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
402 lines
14 KiB
402 lines
14 KiB
<?php
|
|
/*
|
|
==============================================================================
|
|
Dokeos - elearning and course management software
|
|
|
|
Copyright (c) 2004 Dokeos S.A.
|
|
Copyright (c) 2003 Ghent University (UGent)
|
|
Copyright (c) 2001 Universite catholique de Louvain (UCL)
|
|
Copyright (c) 2004 Bart Mollet (HoGent)
|
|
|
|
For a full list of contributors, see "credits.txt".
|
|
The full license can be read in "license.txt".
|
|
|
|
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.
|
|
|
|
See the GNU General Public License for more details.
|
|
|
|
Contact address: Dokeos, 44 rue des palais, B-1030 Brussels, Belgium
|
|
Mail: info@dokeos.com
|
|
==============================================================================
|
|
*/
|
|
define('VISIBLE_GUEST', 1);
|
|
define('VISIBLE_STUDENT', 2);
|
|
define('VISIBLE_TEACHER', 3);
|
|
/**
|
|
==============================================================================
|
|
* This is the system announcements library for Dokeos.
|
|
*
|
|
* @package dokeos.library
|
|
==============================================================================
|
|
*/
|
|
class SystemAnnouncementManager
|
|
{
|
|
/**
|
|
* Displays all announcements
|
|
* @param int $visible VISIBLE_GUEST, VISIBLE_STUDENT or VISIBLE_TEACHER
|
|
* @param int $id The identifier of the announcement to display
|
|
*/
|
|
function display_announcements($visible, $id = -1)
|
|
{
|
|
$user_selected_language = api_get_interface_language();
|
|
$db_table = Database :: get_main_table(TABLE_MAIN_SYSTEM_ANNOUNCEMENTS);
|
|
$sql = "SELECT *, DATE_FORMAT(date_start,'%d-%m-%Y') AS display_date FROM ".$db_table." WHERE (lang='$user_selected_language' OR lang IS NULL) AND (NOW() BETWEEN date_start AND date_end) OR date_end='0000-00-00' ";
|
|
switch ($visible)
|
|
{
|
|
case VISIBLE_GUEST :
|
|
$sql .= " AND visible_guest = '1'";
|
|
break;
|
|
case VISIBLE_STUDENT :
|
|
$sql .= " AND visible_student = '1'";
|
|
break;
|
|
case VISIBLE_TEACHER :
|
|
$sql .= " AND visible_teacher = '1'";
|
|
break;
|
|
}
|
|
$sql .= " ORDER BY date_start DESC LIMIT 0,7";
|
|
$announcements = api_sql_query($sql,__FILE__,__LINE__);
|
|
if (mysql_num_rows($announcements))
|
|
{
|
|
$query_string = ereg_replace('announcement=[1-9]+', '', $_SERVER['QUERY_STRING']);
|
|
$query_string = ereg_replace('&$', '', $query_string);
|
|
$url = $_SERVER['PHP_SELF'];
|
|
echo '<div class="system_announcements">';
|
|
echo '<h3>'.get_lang('SystemAnnouncements').'</h3>';
|
|
echo '<table border="0">';
|
|
while ($announcement = mysql_fetch_object($announcements))
|
|
{
|
|
|
|
if ($id != $announcement->id)
|
|
{
|
|
if (strlen($query_string) > 0)
|
|
{
|
|
$show_url = 'newsList.php#'.$announcement->id;
|
|
//$show_url = $url.'?'.$query_string.'&announcement='.$announcement->id;
|
|
}
|
|
else
|
|
{
|
|
$show_url = 'newsList.php#'.$announcement->id;
|
|
//$show_url = $url.'?announcement='.$announcement->id;
|
|
}
|
|
echo '<tr class="system_announcement">
|
|
<td width="80px" valign="top" class="system_announcement_title">'
|
|
.$announcement->display_date.'
|
|
</td>
|
|
<td valign="top">
|
|
<a name="ann'.$announcement->id.'" href="'.$show_url.'">'.$announcement->title.'</a>
|
|
</td>
|
|
</tr>';
|
|
}
|
|
else
|
|
{
|
|
echo '<div class="system_announcement">
|
|
<div class="system_announcement_title">'
|
|
.$announcement->display_date.'
|
|
<a name="ann'.$announcement->id.'" href="'.$url.'?'.$query_string.'#ann'.$announcement->id.'">'.$announcement->title.'</a>
|
|
</div>
|
|
<div class="system_announcement_content">'
|
|
.$announcement->content.'
|
|
</div>';
|
|
}
|
|
|
|
}
|
|
|
|
echo '<tr><td height="15px"></td></tr>';
|
|
echo '<tr><td colspan="2">';
|
|
echo '<a href="newsList.php">'.get_lang("More").'</a>';
|
|
echo '</td></tr>';
|
|
echo '</table>';
|
|
echo '</div>';
|
|
}
|
|
return;
|
|
}
|
|
|
|
function display_all_announcements($visible, $id = -1,$start = 0,$user_id)
|
|
{
|
|
|
|
$user_selected_language = api_get_interface_language();
|
|
|
|
$db_table = Database :: get_main_table(TABLE_MAIN_SYSTEM_ANNOUNCEMENTS);
|
|
$sql = "SELECT *, DATE_FORMAT(date_start,'%d-%m-%Y') AS display_date FROM ".$db_table."
|
|
WHERE (lang='$user_selected_language' OR lang IS NULL) AND (NOW() BETWEEN date_start AND date_end)
|
|
OR date_end='0000-00-00'";
|
|
switch ($visible)
|
|
{
|
|
case VISIBLE_GUEST :
|
|
$sql .= " AND visible_guest = 'true'";
|
|
break;
|
|
case VISIBLE_STUDENT :
|
|
$sql .= " AND visible_student = 'true'";
|
|
break;
|
|
case VISIBLE_TEACHER :
|
|
$sql .= " AND visible_teacher = 'true'";
|
|
break;
|
|
}
|
|
|
|
if(!isset($_GET['start']) || $_GET['start'] == 0)
|
|
{
|
|
$sql .= " ORDER BY date_start DESC LIMIT ".$start.",20";
|
|
}
|
|
else
|
|
{
|
|
$sql .= " ORDER BY date_start DESC LIMIT ".($start+1).",20";
|
|
}
|
|
$announcements = api_sql_query($sql,__FILE__,__LINE__);
|
|
|
|
if (mysql_num_rows($announcements))
|
|
{
|
|
$query_string = ereg_replace('announcement=[1-9]+', '', $_SERVER['QUERY_STRING']);
|
|
$query_string = ereg_replace('&$', '', $query_string);
|
|
$url = $_SERVER['PHP_SELF'];
|
|
echo '<div class="system_announcements">';
|
|
echo '<h3>'.get_lang('SystemAnnouncements').'</h3>';
|
|
echo '<table align="center">';
|
|
echo '<tr>';
|
|
echo '<td>';
|
|
SystemAnnouncementManager :: display_fleche($user_id);
|
|
echo '</td>';
|
|
echo '</tr>';
|
|
echo '</table>';
|
|
echo '<table align="center" border="0" width="900px">';
|
|
while ($announcement = mysql_fetch_object($announcements))
|
|
{
|
|
echo '<tr><td>';
|
|
echo '<a name="'.$announcement->id.'"></a>
|
|
<div class="system_announcement">
|
|
<div class="system_announcement_title">'
|
|
.$announcement->display_date.' <strong>'.$announcement->title.'</strong>
|
|
</div>
|
|
<br />
|
|
<div class="system_announcement_content">'
|
|
.$announcement->content.'
|
|
</div>
|
|
</div>
|
|
<br />
|
|
<hr noshade size="1">';
|
|
echo '</tr></td>';
|
|
}
|
|
echo '</table>';
|
|
echo '<table align="center">';
|
|
echo '<tr>';
|
|
echo '<td>';
|
|
SystemAnnouncementManager :: display_fleche($user_id);
|
|
echo '</td>';
|
|
echo '</tr>';
|
|
echo '</table>';
|
|
echo '</div>';
|
|
}
|
|
return;
|
|
}
|
|
|
|
function display_fleche($user_id)
|
|
{
|
|
$start = (int)$_GET['start'];
|
|
$nb_announcement = SystemAnnouncementManager :: count_nb_announcement($start,$user_id);
|
|
$next = ((int)$_GET['start']+19);
|
|
$prev = ((int)$_GET['start']-19);
|
|
|
|
if(!isset($_GET['start']) || $_GET['start'] == 0)
|
|
{
|
|
|
|
if($nb_announcement > 20)
|
|
{
|
|
echo '<a href="newsList.php?start='.$next.'">'.get_lang('NextBis').' >> </a>';
|
|
}
|
|
|
|
}
|
|
else
|
|
{
|
|
echo '<a href="newsList.php?start='.$prev.'"> << '.get_lang('Prev').'</a>';
|
|
|
|
if($nb_announcement > 20)
|
|
{
|
|
echo '<a href="newsList.php?start='.$next.'">'.get_lang('NextBis').' >> </a>';
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
function count_nb_announcement($start = 0,$user_id = '')
|
|
{
|
|
$visibility = api_is_allowed_to_create_course() ? VISIBLE_TEACHER : VISIBLE_STUDENT;
|
|
$user_selected_language = api_get_interface_language();
|
|
$db_table = Database :: get_main_table(TABLE_MAIN_SYSTEM_ANNOUNCEMENTS);
|
|
$sql = 'SELECT id
|
|
FROM '.$db_table.'
|
|
WHERE (lang="'.$user_selected_language.'" OR lang IS NULL) ';
|
|
if (isset($user_id))
|
|
{
|
|
switch ($visibility)
|
|
{
|
|
case VISIBLE_GUEST :
|
|
$sql .= " AND visible_guest = 'true'";
|
|
break;
|
|
case VISIBLE_STUDENT :
|
|
$sql .= " AND visible_student = 'true'";
|
|
break;
|
|
case VISIBLE_TEACHER :
|
|
$sql .= " AND visible_teacher = 'true'";
|
|
break;
|
|
}
|
|
}
|
|
$sql .= 'LIMIT '.$start.',21';
|
|
$announcements = api_sql_query($sql,__FILE__,__LINE__);
|
|
$i = 0;
|
|
while($rows = mysql_fetch_array($announcements))
|
|
{
|
|
$i++;
|
|
}
|
|
return $i;
|
|
}
|
|
|
|
/**
|
|
* Get all announcements
|
|
* @return array An array with all available system announcements (as php
|
|
* objects)
|
|
*/
|
|
function get_all_announcements()
|
|
{
|
|
$db_table = Database :: get_main_table(TABLE_MAIN_SYSTEM_ANNOUNCEMENTS);
|
|
|
|
$sql = "SELECT *, IF( NOW() BETWEEN date_start AND date_end, '1', '0') AS visible FROM ".$db_table." ORDER BY date_start ASC";
|
|
$announcements = api_sql_query($sql,__FILE__,__LINE__);
|
|
$all_announcements = array();
|
|
while ($announcement = mysql_fetch_object($announcements))
|
|
{
|
|
$all_announcements[] = $announcement;
|
|
}
|
|
return $all_announcements;
|
|
}
|
|
/**
|
|
* Adds an announcement to the database
|
|
* @param string $title Title of the announcement
|
|
* @param string $content Content of the announcement
|
|
* @param string $date_start Start date (YYYY-MM-DD HH:II: SS)
|
|
* @param string $date_end End date (YYYY-MM-DD HH:II: SS)
|
|
*/
|
|
function add_announcement($title, $content, $date_start, $date_end, $visible_teacher = 'false', $visible_student = 'false', $visible_guest = 'false', $lang = null)
|
|
{
|
|
|
|
$a_dateS = explode(' ',$date_start);
|
|
$a_arraySD = explode('-',$a_dateS[0]);
|
|
$a_arraySH = explode(':',$a_dateS[1]);
|
|
$date_start = array_merge($a_arraySD,$a_arraySH);
|
|
|
|
$a_dateE = explode(' ',$date_end);
|
|
$a_arrayED = explode('-',$a_dateE[0]);
|
|
$a_arrayEH = explode(':',$a_dateE[1]);
|
|
$date_end = array_merge($a_arrayED,$a_arrayEH);
|
|
|
|
$db_table = Database :: get_main_table(TABLE_MAIN_SYSTEM_ANNOUNCEMENTS);
|
|
|
|
if (!checkdate($date_start[1], $date_start[2], $date_start[0]))
|
|
{
|
|
Display :: display_normal_message(get_lang('InvalidStartDate'));
|
|
return false;
|
|
}
|
|
if (($date_end[1] || $date_end[2] || $date_end[0]) && !checkdate($date_end[1], $date_end[2], $date_end[0]))
|
|
{
|
|
Display :: display_normal_message(get_lang('InvalidEndDate'));
|
|
return false;
|
|
}
|
|
if( strlen(trim($title)) == 0)
|
|
{
|
|
Display::display_normal_message(get_lang('InvalidTitle'));
|
|
return false;
|
|
}
|
|
$start = $date_start[0]."-".$date_start[1]."-".$date_start[2]." ".$date_start[3].":".$date_start[4].":".$date_start[5];
|
|
$end = $date_end[0]."-".$date_end[1]."-".$date_end[2]." ".$date_end[3].":".$date_end[4].":".$date_start[5];
|
|
$title = mysql_real_escape_string($title);
|
|
$content = mysql_real_escape_string($content);
|
|
$lang = is_null($lang) ? 'NULL' : "'".mysql_real_escape_string($lang)."'";
|
|
$sql = "INSERT INTO ".$db_table." (`title`,`content`,`date_start`,`date_end`,`visible_teacher`,`visible_student`,`visible_guest`, `lang`)
|
|
VALUES ('".$title."','".$content."','".$start."','".$end."','".$visible_teacher."','".$visible_student."','".$visible_guest."',".$lang.")";
|
|
return api_sql_query($sql,__FILE__,__LINE__);
|
|
}
|
|
/**
|
|
* Updates an announcement to the database
|
|
* @param integer $id : id of the announcement
|
|
* @param string $title : title of the announcement
|
|
* @param string $content : content of the announcement
|
|
* @param array $date_start: start date of announcement (0 => day ; 1 => month ; 2 => year ; 3 => hour ; 4 => minute)
|
|
* @param array $date_end : end date of announcement (0 => day ; 1 => month ; 2 => year ; 3 => hour ; 4 => minute)
|
|
*/
|
|
function update_announcement($id, $title, $content, $date_start, $date_end, $visible_teacher = 'false', $visible_student = 'false', $visible_guest = 'false',$lang=null)
|
|
{
|
|
|
|
$a_dateS = explode(' ',$date_start);
|
|
$a_arraySD = explode('-',$a_dateS[0]);
|
|
$a_arraySH = explode(':',$a_dateS[1]);
|
|
$date_start = array_merge($a_arraySD,$a_arraySH);
|
|
|
|
$a_dateE = explode(' ',$date_end);
|
|
$a_arrayED = explode('-',$a_dateE[0]);
|
|
$a_arrayEH = explode(':',$a_dateE[1]);
|
|
$date_end = array_merge($a_arrayED,$a_arrayEH);
|
|
$lang = is_null($lang) ? 'NULL' : "'".mysql_real_escape_string($lang)."'";
|
|
$db_table = Database :: get_main_table(TABLE_MAIN_SYSTEM_ANNOUNCEMENTS);
|
|
if (!checkdate($date_start[1], $date_start[2], $date_start[0]))
|
|
{
|
|
Display :: display_normal_message(get_lang('InvalidStartDate'));
|
|
return false;
|
|
}
|
|
if (($date_end[1] || $date_end[2] || $date_end[0]) && !checkdate($date_end[1], $date_end[2], $date_end[0]))
|
|
{
|
|
Display :: display_normal_message(get_lang('InvalidEndDate'));
|
|
return false;
|
|
}
|
|
if( strlen(trim($title)) == 0)
|
|
{
|
|
Display::display_normal_message(get_lang('InvalidTitle'));
|
|
return false;
|
|
}
|
|
$start = $date_start[0]."-".$date_start[1]."-".$date_start[2]." ".$date_start[3].":".$date_start[4].":".$date_start[5];
|
|
$end = $date_end[0]."-".$date_end[1]."-".$date_end[2]." ".$date_end[3].":".$date_end[4].":".$date_start[5];
|
|
$title = mysql_real_escape_string($title);
|
|
$content = mysql_real_escape_string($content);
|
|
$sql = "UPDATE ".$db_table." SET lang=$lang,title='".$title."',content='".$content."',date_start='".$start."',date_end='".$end."', ";
|
|
$sql .= " visible_teacher = '".$visible_teacher."', visible_student = '".$visible_student."', visible_guest = '".$visible_guest."' WHERE id='".$id."'";
|
|
return api_sql_query($sql,__FILE__,__LINE__);
|
|
}
|
|
/**
|
|
* Deletes an announcement
|
|
* @param integer $id The identifier of the announcement that should be
|
|
* deleted
|
|
*/
|
|
function delete_announcement($id)
|
|
{
|
|
$db_table = Database :: get_main_table(TABLE_MAIN_SYSTEM_ANNOUNCEMENTS);
|
|
$sql = "DELETE FROM ".$db_table." WHERE id='".$id."'";
|
|
return api_sql_query($sql,__FILE__,__LINE__);
|
|
}
|
|
/**
|
|
* Gets an announcement
|
|
* @param integer $id The identifier of the announcement that should be
|
|
* deleted
|
|
*/
|
|
function get_announcement($id)
|
|
{
|
|
$db_table = Database :: get_main_table(TABLE_MAIN_SYSTEM_ANNOUNCEMENTS);
|
|
$sql = "SELECT * FROM ".$db_table." WHERE id='".$id."'";
|
|
$announcement = mysql_fetch_object(api_sql_query($sql,__FILE__,__LINE__));
|
|
return $announcement;
|
|
}
|
|
/**
|
|
* Change the visibility of an announcement
|
|
* @param integer $announcement_id
|
|
* @param integer $user For who should the visibility be changed (possible
|
|
* values are VISIBLE_TEACHER, VISIBLE_STUDENT, VISIBLE_GUEST)
|
|
*/
|
|
function set_visibility($announcement_id, $user, $visible)
|
|
{
|
|
$db_table = Database :: get_main_table(TABLE_MAIN_SYSTEM_ANNOUNCEMENTS);
|
|
$field = ($user == VISIBLE_TEACHER ? 'visible_teacher' : ($user == VISIBLE_STUDENT ? 'visible_student' : 'visible_guest'));
|
|
$sql = "UPDATE ".$db_table." SET ".$field." = '".$visible."' WHERE id='".$announcement_id."'";
|
|
return api_sql_query($sql,__FILE__,__LINE__);
|
|
}
|
|
}
|
|
?>
|