}
Display::display_confirmation_message(get_lang('AnnouncementDeleted'));
$action_todo = false;
break;
case 'add':
// Add an announcement.
$values['action'] = 'add';
// Set default time window: NOW -> NEXT WEEK
$values['start'] = date('Y-m-d H:i:s', api_strtotime(api_get_local_time()));
$values['end'] = date('Y-m-d H:i:s', api_strtotime(api_get_local_time()) + 7 * 24 * 60 * 60);
$values['range'] = substr(api_get_local_time(time()), 0, 16) . ' / ' . substr(api_get_local_time(time() + 7 * 24 * 60 * 60), 0, 16);
$action_todo = true;
break;
case 'edit':
// Edit an announcement.
$announcement = SystemAnnouncementManager::get_announcement($_GET['id']);
$values['id'] = $announcement->id;
$values['title'] = $announcement->title;
$values['content'] = $announcement->content;
$values['start'] = api_get_local_time($announcement->date_start);
$values['end'] = api_get_local_time($announcement->date_end);
$values['range'] = substr(api_get_local_time($announcement->date_start), 0, 16) . ' / ' . substr(api_get_local_time($announcement->date_end), 0, 16);
$values['visible_teacher'] = $announcement->visible_teacher;
$values['visible_student'] = $announcement->visible_student;
$values['visible_guest'] = $announcement->visible_guest;
$values['lang'] = $announcement->lang;
$values['action'] = 'edit';
$groups = SystemAnnouncementManager::get_announcement_groups($announcement->id);
$values['group'] = isset($groups['group_id']) ? $groups['group_id'] : 0;
$action_todo = true;
break;