Function adoptShadowMode

src/runtime.js:414–453

(global)

 * @return {!Promise}
 */
export function adoptShadowMode(global) {
  return adoptShared(global, (global, extensions) => {
    // shadow mode already adopted
    if (global.AMP.attachShadowDoc) {
      return Promise.resolve();
    }

    // Dependencies to the MultiDocManager
    adoptMultiDocDeps(global);

    const manager = new MultidocManager(
      global,
      Services.ampdocServiceFor(global),
      extensions,
      Services.timerFor(global)
    );

    /**
     * Registers a shadow root document via a fully fetched document.
     * @param {!Element} hostElement
     * @param {!Document} doc
     * @param {string} url
     * @param {!{[key: string]: string}=} opt_initParams
     * @return {!Object}
     */
    global.AMP.attachShadowDoc = manager.attachShadowDoc.bind(manager);

    /**
     * Registers a shadow root document via a stream.
     * @param {!Element} hostElement
     * @param {string} url
     * @param {!{[key: string]: string}=} opt_initParams
     * @return {!Object}
     */
    global.AMP.attachShadowDocAsStream =
      manager.attachShadowDocAsStream.bind(manager);

    return waitForBodyOpenPromise(global.document);
  });
}

/**
 * For a given extension, checks that its version is the same