Method _createCollapsedPart

src/View/Pipe.js:236–248

* Creates collapsed part. * @return {HTMLElement}

(bricks)

   * @return {HTMLElement}
   */
  _createCollapsedPart (bricks) {
    return View.createElement('button', {
      className: 'pipe__part-collapsed',
      onClick: evt => {
        this.getModel().viewHiddenBrickGroupDidClick(this, bricks)
        evt.preventDefault()
      }
    }, bricks.map(() =>
      View.createElement('div', {
        className: 'pipe__part-collapsed-fold'
      })
    ))
  }

  /**
   * Checks if given drop event is a brick drop.