wicg / conditional-focus Goto Github PK

const stream = await navigator.mediaDevices.getDisplayMedia({focus: ShouldFocus});

function ShouldFocus(stream) {
  const [track] = stream.getVideoTracks();
  if (sampleUsesCaptureHandle) {
    // Assume logic discriminating focusability by origin,
    // for instance focusing anything except https://collaborator.com.
    const captureHandle = track.getCaptureHandle();
    return ShouldFocusOrigin(captureHandle && captureHandle.origin);
  } else {  // Assume Capture Handle is not a thing.
    // Assume the application is only interested in focusing tabs, not windows.
    return track.getSettings().displaySurface == 'browser';
  }
}