Returns HTML for an element's children details as vertical tabs.
$variables: An associative array containing:
function theme_vertical_tabs($variables) {
$element = $variables['element'];
// Even if there are no tabs the element will still have a child element for
// the active tab. We need to iterate over the tabs to ascertain if any
// are visible before showing the wrapper and h2.
$visible_tab = FALSE;
$output = '';
foreach (element_children($element['group']) as $tab_index) {
if (!isset($element['group'][$tab_index]['#access']) || !empty($element['group'][$tab_index]['#access'])) {
$visible_tab = TRUE;
break;
}
}
if ($visible_tab) {
// Add required JavaScript and Stylesheet.
drupal_add_library('system', 'drupal.vertical-tabs');
$output = '<h2 class="element-invisible">' . t('Vertical Tabs') . '</h2>';
$output .= '<div class="vertical-tabs-panes">' . $element['#children'] . '</div>';
}
return $output;
}