/**
* Main Instance.
*
* Ensures only one instance of this class is loaded or can be loaded.
*
* @since 1.5
* @access public
* @static
* @param object|bool $caller The referrer class
* @return VAA_View_Admin_As_Role_Defaults|bool
*/
public static function get_instance($caller = false)
{
if (is_object($caller) && 'VAA_View_Admin_As' == get_class($caller)) {
if (is_null(self::$_instance)) {
self::$_instance = new self();
}
return self::$_instance;
}
return false;
}
/**
* Load the modules
*
* @since 1.5
* @since 1.5.1 added notice on class name conflict
* @access private
* @return void
*/
private function load_modules()
{
// The role defaults module (screen settings)
if (!class_exists('VAA_View_Admin_As_Role_Defaults')) {
require VIEW_ADMIN_AS_DIR . 'modules/class-role-defaults.php';
self::$vaa_class_names[] = 'VAA_View_Admin_As_Role_Defaults';
$this->modules['role_defaults'] = VAA_View_Admin_As_Role_Defaults::get_instance($this);
} else {
$this->add_notice('class-error-role-defaults', array('type' => 'notice-error', 'message' => '<strong>' . __('View Admin As', 'view-admin-as') . ':</strong> ' . __('Plugin not loaded because of a conflict with an other plugin or theme', 'view-admin-as') . ' <code>(' . sprintf(__('Class %s already exists', 'view-admin-as'), 'VAA_View_Admin_As_Role_Defaults') . ')</code>'));
}
}
