Method getDraggableElements

src/Draggable/Draggable.js:386–390

* Returns all draggable elements * @return {HTMLElement[]}

()

   * @return {HTMLElement[]}
   */
  getDraggableElements() {
    return this.containers.reduce((current, container) => {
      return [...current, ...this.getDraggableElementsForContainer(container)];
    }, []);
  }

  /**
   * Returns draggable elements for a given container, excluding the mirror and