Method navigateTo

examples/pwa/pwa.js:128–164

* @param {string} path * @return {!Promise}

(path)

   * @return {!Promise}
   */
  navigateTo(path) {
    log('Navigate to: ', path);
    const oldPage = this.currentPage_;
    this.currentPage_ = path;

    // Update URL.
    const push = !isShellUrl(path) && isShellUrl(oldPage);
    if (path != this.win.location.pathname) {
      if (push) {
        this.win.history.pushState(null, '', path);
      } else {
        this.win.history.replaceState(null, '', path);
      }
    }

    if (isShellUrl(path)) {
      log('Back to shell');
      this.ampViewer_.clear();
      return Promise.resolve();
    }

    // Fetch.
    const url = this.resolveUrl_(path);
    log('Fetch and render doc:', path, url);
    // TODO(dvoytenko, #9490): Make `streamDocument` the only used API once
    // streaming is graduated out of experimental.
    if (this.useStreaming_) {
      log('Streaming started: ', url);
      return this.ampViewer_
        .showAsStream(url)
        .then((shadowDoc) => streamDocument(url, shadowDoc.writer));
    }
    return fetchDocument(url).then((doc) => {
      log('Fetch complete: ', doc);
      return this.ampViewer_.show(doc, url);
    });
  }

  /**
   * @param {string} url