- X_EventDispatcher_systemListen( X_ViewPort_document, [ 'focusin', 'focusout' ], X_ViewPort );
+ X_ViewPort_document[ 'listen' ]( [ 'focusin', 'focusout' ], X_ViewPort );
+ };
+
+ // TODO activeElement が無い対策
+ if( !FocusUtility_docActiveElmSupport ){
+ X_ViewPort[ 'listen' ]( 'focus', X_ViewPort_fixActiveElm );