anchor.diff:      if ($('#affirmExportButton') != null) {
         _affirmButton = new PaperIconButton.from($('#affirmExportButton'));
         _affirmButton.clickAction(() {
  +        WindowBase wind = window.open("", 'Window');
           _exportDialog.toggle();
  -        _export();
  +        _export(wind);
         });
       }
     }
  
positive.code:     _clearOutput();
    }
  
    void _export() {
      PadSaveObject exportObject = new PadSaveObject()..html = context.htmlSource
          ..css = context.cssSource ..dart = context.dartSource;
      Future<UuidContainer> id = dartSupportServices.export(exportObject);
      id.then((UuidContainer container) {
        window.open('/index.html?export=${container.uuid}', 'Export');
      });
    }
  
  
negative.code: }
  
  class PlaygroundMobile {
    final String webURL = "https://dartpad.dartlang.org/";
    
    PaperFab _runButton;
    PaperIconButton _exportButton;
    PaperIconButton _cancelButton;
  