Method _setStyle

src/core/core.datasetController.js:919–927

* @private

(element, index, mode, active)

	 * @private
	 */
  _setStyle(element, index, mode, active) {
    element.active = active;
    const options = this.getStyle(index, active);
    this._resolveAnimations(index, mode, active).update(element, {
      // When going from active to inactive, we need to update to the shared options.
      // This way the once hovered element will end up with the same original shared options instance, after animation.
      options: (!active && this.getSharedOptions(options)) || options
    });
  }

  removeHoverStyle(element, datasetIndex, index) {
    this._setStyle(element, index, 'active', false);