Method getIntersectionChangeEntry

src/custom-element.js:1524–1534

* Returns a change entry for that should be compatible with * IntersectionObserverEntry. * @return {?IntersectionObserverEntry} A change entry. * @final

()

     * @final
     */
    getIntersectionChangeEntry() {
      const box = this.impl_
        ? this.impl_.getIntersectionElementLayoutBox()
        : this.getLayoutBox();
      const owner = this.getOwner();
      const viewport = Services.viewportForDoc(this.getAmpDoc());
      const viewportBox = viewport.getRect();
      // TODO(jridgewell, #4826): We may need to make this recursive.
      const ownerBox = owner && owner.getLayoutBox();
      return getIntersectionChangeEntry(box, ownerBox, viewportBox);
    }

    /**
     * Returns the resource of the element.