Method enterLightbox

src/service/fixed-layer.js:114–128

* Informs FixedLayer that a lightbox was opened. * * - FixedLayer hides any transfer layer elements that may be overlaid on * top of the lightbox, which is confusing UX. * - When `onComplete` resolves, FixedLayer scans and transfers any fixed * descendants of `lightbox`. This enab

(opt_lightbox, opt_onComplete)

   *   UX completes e.g. open transition animation.
   */
  enterLightbox(opt_lightbox, opt_onComplete) {
    const transferLayer = this.getTransferLayer_();
    if (transferLayer) {
      transferLayer.setLightboxMode(true);
    }

    if (opt_lightbox && opt_onComplete) {
      opt_onComplete.then(() =>
        this.scanNode_(
          dev().assertElement(opt_lightbox),
          /* lightboxMode */ true
        )
      );
    }
  }

  /**
   * Reverses the actions performed by `enterLightbox()`.