public static function get_instance()
{
if (null == self::$instance) {
self::$instance = new self();
self::$instance->add_sneaky_hidden_helper();
}
}
/**
* Check if an on-demand submenu should be added, and jumpstart it's controller if needed.
*
* On-demand submenu means that the submenu isn't displayed normally, it appears only when its page is loaded.
*
* Note: All page controllers should inherit from Types_Page_Abstract.
*
* @param array $pages Array of menu item definitions.
* @param string $page_name
* @return array Updated item definition array.
* @since 2.0
*/
private function maybe_add_ondemand_submenu($pages, $page_name)
{
$page = null;
switch ($page_name) {
case self::PAGE_NAME_FIELD_CONTROL:
$page = Types_Page_Field_Control::get_instance();
break;
case self::PAGE_NAME_HELPER:
Types_Page_Hidden_Helper::get_instance();
break;
}
if ($page instanceof Types_Page_Abstract) {
// Jumpstart the page controller.
try {
$page->prepare();
} catch (Exception $e) {
wp_die($e->getMessage());
}
$pages[$page_name] = array('slug' => $page_name, 'menu_title' => $page->get_title(), 'page_title' => $page->get_title(), 'callback' => $page->get_render_callback(), 'load_hook' => $page->get_load_callback(), 'capability' => $page->get_required_capability(), 'contextual_help_hook' => array(Types_Asset_Help_Tab_Loader::get_instance(), 'add_help_tab'));
// todo we might need to handle adding URL parameters to submenu URLs in some standard way, it's common scenario for ondemand submenus
}
return $pages;
}
