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Use postMessage for communicating waitUntil

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This commit is contained in:
Henri Bergius 2018-12-26 16:51:28 +01:00
parent 173311ed33
commit 8fd8d7a3bd
3 changed files with 26 additions and 2 deletions
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16
infodisplay/infodisplay.js
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@ -62,6 +62,7 @@ function DisplayParticipant(broker, role, defaultUrls, timer) {
callback('opened', null, next.getAttribute('src'));
return;
}
window.onmessage = null;
next.onerror = (err) => {
next.onload = null;
next.onerror = null;
@ -80,6 +81,21 @@ function DisplayParticipant(broker, role, defaultUrls, timer) {
timeout = setTimeout(() => {
participant.send('open', getRotationUrl(urls, indata));
}, timer);
window.onmessage = (event) => {
window.onmessage = null;
const now = new Date();
if (!event.data
|| !event.data.waitUntil
|| event.data.waitUntil < now.getTime()) {
return;
}
if (timeout) {
clearTimeout(timeout);
}
timeout = setTimeout(() => {
participant.send('open', getRotationUrl(urls, indata));
}, event.data.waitUntil - now.getTime());
};
callback('opened', null, next.getAttribute('src'));
};
next.setAttribute('src', indata);