Method scrollTo

src/View/Pipe.js:512–543

* Scrolls to given position. Respects scroll bounds. * @param {Number} [x=0] Scroll position. * @return {PipeView} Fluent interface

(x = 0)

   * @return {PipeView} Fluent interface
   */
  scrollTo (x = 0) {
    // Remove decimal digits
    x = parseInt(x)

    // Respect bounds
    x = Math.max(Math.min(x, this._scrollMax), 0)

    // Only proceed when something has changed
    if (this._scrollPosition !== x) {
      // Left scroll handle
      if (x === 0) {
        this._$scrollHandleLeft.classList.add(scrollHandleDisabledClass)
        this.scrollHandleDidStop()
      } else if (this._scrollPosition === 0) {
        this._$scrollHandleLeft.classList.remove(scrollHandleDisabledClass)
      }

      // Right scroll handle
      if (x === this._scrollMax) {
        this._$scrollHandleRight.classList.add(scrollHandleDisabledClass)
        this.scrollHandleDidStop()
      } else if (this._scrollPosition === this._scrollMax) {
        this._$scrollHandleRight.classList.remove(scrollHandleDisabledClass)
      }

      // Apply change to DOM
      this._$content.style.transform = x > 0 ? `translate(${-x}px, 0)` : ''

      this._scrollPosition = x
    }
    return this
  }
}