- From: Sichao Xue (sichax) via GitHub <sysbot+gh@w3.org>
- Date: Wed, 29 May 2024 19:21:11 +0000
- To: public-webrtc@w3.org
xuesichao has just created a new issue for https://github.com/w3c/mediacapture-handle:
== What does capturehandlechange event do when cross documentation navigation happen? ==
Hi, I see in the blog [Better tab sharing with Capture Handle](https://developer.chrome.com/docs/web-platform/capture-handle#capturing_side) :
>Monitor CaptureHandle changes by listening to "capturehandlechange" events on a MediaStreamTrack object. Changes happen when:
>
>- The captured web app calls navigator.mediaDevices.setCaptureHandleConfig().
>- A [cross-document navigation](https://chromium.googlesource.com/chromium/src/+/main/docs/navigation_concepts.md#Same_Document-and-Cross_Document-Navigations) occurs in the captured web app.
I found it not clear on what will be the value of `event.target.getCaptureHandle()` when cross-document navigation happens.
```
// When cross-document navigation happens
videoTrack.addEventListener('capturehandlechange', event => {
captureHandle = event.target.getCaptureHandle();
// What's the value of captureHandle?
});
```
Could you help clarify this? It seems the captureHandle will be `undefined` in this case? And when does this event gets triggered exactly? Is there a specific DOM event? Thank you.
Please view or discuss this issue at https://github.com/w3c/mediacapture-handle/issues/74 using your GitHub account
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Received on Wednesday, 29 May 2024 19:21:12 UTC