showGrips (show) {
    const bShow = show ? 'inline' : 'none'
    selectorManager_.selectorGripsGroup.setAttribute('display', bShow)
    const elem = this.selectedElement
    this.hasGrips = show
    if (elem && show) {
      this.selectorGroup.append(selectorManager_.selectorGripsGroup)
      Selector.updateGripCursors(getRotationAngle(elem))
    }
  }
Show the resize grips of this selector.
@param {boolean} show - Indicates whether grips should be shown or not
@returns {void}