protected void addSourcePage() {

    addPage(
        new PageImpl(view.getSourceEditor(), CommonConstants.INSTANCE.SourceTabTitle()) {
          @Override
          public void onFocus() {
            onSourceTabSelected();
          }

          @Override
          public void onLostFocus() {}
        });
  }
  private void addSourceEditorPage() {
    addPage(
        new PageImpl(
            javaSourceEditor,
            org.kie.workbench.common.widgets.client.resources.i18n.CommonConstants.INSTANCE
                .SourceTabTitle()) {
          @Override
          public void onFocus() {
            if (uiStarted) {
              onSourceTabSelected();
            }
          }

          @Override
          public void onLostFocus() {}
        });
  }