| <!DOCTYPE html> |
| <script> |
| var postMessagePromise = new Promise((resolve, reject) => { |
| window.portalHost.addEventListener("message", () => { |
| resolve(performance.now()); |
| }); |
| }); |
| |
| var activatePromise = new Promise((resolve, reject) => { |
| window.onportalactivate = () => { |
| resolve(performance.now()); |
| } |
| }); |
| |
| Promise.all([postMessagePromise, activatePromise]) |
| .then(values => { |
| bc = new BroadcastChannel("portals-post-message-before-activate"); |
| bc.postMessage({ |
| postMessageTS: values[0], |
| activateTS: values[1] |
| }); |
| bc.close(); |
| }); |
| </script> |
