function prepareXHTML() {
$text = $_POST['text'];
$text = WCAG_Rendering::text_to_HTML ( $text );
$imageFile = $_POST['imagefile'];
$imageLabel = $_POST['imageLabel'];
$link = $_POST['link'];
$linkLabel = $_POST['linkLabel'];
if (strlen($linkLabel) == 0) {
$linkLabel = $link;
}
$home_top='<div id="WCAG-home"><img src="'.$imageFile.'" alt="'.$imageLabel.'" />'.'<p>'.$text.'</p>';
if (strlen($link) > 0) {
$home_top = $home_top.'<a href="'.$link.'">'.$linkLabel.'</a>';
}
$home_top=$home_top."<div style=\"clear:both;\"><span></span></div></div>";
return $home_top;
}
if ($form->validate()) {
$values = $form->exportValues();
if (!isset($values['visible_teacher'])) {
$values['visible_teacher'] = false;
}
if (!isset($values['visible_student'])) {
$values['visible_student'] = false;
}
if (!isset($values['visible_guest'])) {
$values['visible_guest'] = false;
}
if ($values['lang'] == 'all') {
$values['lang'] = null;
}
if (api_get_setting('wcag_anysurfer_public_pages') == 'true') {
$values['content'] = WCAG_Rendering::text_to_HTML($values['content']);
}
switch ($values['action']) {
case 'add':
$announcement_id = SystemAnnouncementManager::add_announcement($values['title'], $values['content'], $values['start'], $values['end'], $values['visible_teacher'], $values['visible_student'], $values['visible_guest'], $values['lang'], $values['send_mail'], $values['add_to_calendar']);
if ($announcement_id !== false) {
SystemAnnouncementManager::announcement_for_groups($announcement_id, array($values['group']));
Display::display_confirmation_message(get_lang('AnnouncementAdded'));
} else {
$show_announcement_list = false;
$form->display();
}
break;
case 'edit':
if (SystemAnnouncementManager::update_announcement($values['id'], $values['title'], $values['content'], $values['start'], $values['end'], $values['visible_teacher'], $values['visible_student'], $values['visible_guest'], $values['lang'], $values['send_mail'])) {
SystemAnnouncementManager::announcement_for_groups($values['id'], array($values['group']));
