Function onMessage

ads/google/ima/ima-video.js:1375–1449

* Handles messages from the top window. * @param {!Object} global * @param {!Event} event

(global, event)

 * @param {!Event} event
 */
function onMessage(global, event) {
  const eventData = getData(event);
  if (!eventData) {
    return;
  }
  const msg = isObject(eventData) ? eventData : tryParseJson(eventData);
  if (!msg) {
    return; // We only process valid JSON.
  }
  if (!msg['event'] || !msg['func']) {
    return;
  }
  switch (msg['func']) {
    case 'play':
      if (adsActive || playbackStarted) {
        playVideo();
      } else {
        // Auto-play support
        onOverlayButtonInteract(global);
      }
      break;
    case 'pause':
      pauseVideo();
      break;
    case 'mute':
      muteVideo();
      break;
    case 'unmute':
      unmuteVideo();
      break;
    case 'hideControls':
      if (!adsActive) {
        hideControls();
      }
      break;
    case 'showControls':
      if (!adsActive) {
        showControls();
      }
      break;
    case 'resize':
      const args = msg['args'];
      if (args && args.width && args.height) {
        if (adsActive && !fullscreen) {
          adsManager.resize(
            args.width,
            args.height,
            global.google.ima.ViewMode.NORMAL
          );
        } else {
          adsManagerWidthOnLoad = args.width;
          adsManagerHeightOnLoad = args.height;
        }
      }
      break;
    case 'onFirstScroll':
    case 'onAdRequestDelayTimeout':
      if (!adsRequested && imaLoadAllowed) {