_textAction() {
    return extend(
      {
        changeTextStyle: (styleObj, isSilent) => {
          if (this.activeObjectId) {
            this.changeTextStyle(this.activeObjectId, styleObj, isSilent);
          }
        },
      },
      this._commonAction()
    );
  }
Text Action
@returns {Object} actions for ui text
@private