- From: Jan-Ivar Bruaroey via GitHub <sysbot+gh@w3.org>
- Date: Sat, 03 Sep 2022 00:55:18 +0000
- To: public-webrtc-logs@w3.org
Callbacks are ugly, and tasks and microtasks are equally vulnerable to busy waiting. So I'd prefer e.g.:
```js
function queueTask(f) {
window.addEventListener("message", f, {once: true});
window.postMessage("hi", window.origin);
}
const controller = new CaptureController();
const stream = await navigator.mediaDevices.getDisplayMedia({controller});
controller.focus(); // works
await undefined;
controller.focus(); // works
await new Promise(queueTask);
controller.focus(); // throws
```
If the next task takes over a second to run then something's seriously broken and focus fails, which seems good. Thoughts?
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