summaryrefslogtreecommitdiffstats
path: root/testing/web-platform/tests/mediacapture-image/detached-HTMLCanvasElement.html
blob: e27950fc5edfea8357344f91198f0105775fef2c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
<!DOCTYPE html>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<body>
<script>

async_test(t => {
  let iframe = document.createElement('iframe');
  let html = "<canvas id='canvas' width=10 height=10 />";
  iframe.srcdoc = html;
  iframe.onload = t.step_func_done(() => {
    // This detaches the frame while retaining a reference to an
    // HTMLCanvasElement from it.
    let canvas = iframe.contentWindow.document.getElementById('canvas');
    document.body.removeChild(iframe);

    // Creation of the ImageCapture object (as part of the MediaStreamTrack)
    // should be safe even if the frame is detached.
    canvas.captureStream();
  });

  document.body.appendChild(iframe);
}, 'MediaStreamTrack can be obtained from a detached frame');

</script>
</body>