@RequiresEdt
  protected void installEditorListeners() {
    new TextDiffViewerUtil.EditorActionsPopup(createEditorPopupActions()).install(getEditors(), myPanel);

    new TextDiffViewerUtil.EditorFontSizeSynchronizer(getEditors()).install(this);


    getEditor(Side.LEFT).getScrollingModel().addVisibleAreaListener(myVisibleAreaListener);
    getEditor(Side.RIGHT).getScrollingModel().addVisibleAreaListener(myVisibleAreaListener);

    SyncScrollSupport.SyncScrollable scrollable = getSyncScrollable();
    if (scrollable != null) {
      mySyncScrollSupport = new TwosideSyncScrollSupport(getEditors(), scrollable);
      myEditorSettingsAction.setSyncScrollSupport(mySyncScrollSupport);
    }
  }
@RequiresEdt
  protected void installEditorListeners()