tor-browser

The Tor Browser
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worklet-animation-without-target.https.html (2842B)

      1 <!DOCTYPE html>
      2 <title>Verify that effect without target is supported</title>
      3 <link rel="help" href="https://drafts.css-houdini.org/css-animationworklet/">
      4 
      5 <script src="/resources/testharness.js"></script>
      6 <script src="/resources/testharnessreport.js"></script>
      7 <script src="/web-animations/testcommon.js"></script>
      8 <script src="common.js"></script>
      9 
     10 <div id="box"></div>
     11 
     12 <script>
     13 
     14 setup(setupAndRegisterTests, {explicit_done: true});
     15 
     16 async function setupAndRegisterTests() {
     17  await registerPassthroughAnimator();
     18 
     19  promise_test(async t => {
     20    const effect = new KeyframeEffect(null,
     21      { transform: ['translateY(100px)', 'translateY(200px)'] },
     22      { duration: Infinity, iterations: 1 }
     23    );
     24    const animation = new WorkletAnimation('passthrough', effect);
     25    animation.play();
     26 
     27    // Allow one async animation frame to pass so that animation is running.
     28    await waitForAsyncAnimationFrames(1);
     29    assert_equals(animation.playState, "running");
     30    // Allow time to advance so that we have a non-zero current time.
     31    await waitForDocumentTimelineAdvance();
     32    const t0 = document.timeline.currentTime;
     33    assert_greater_than(animation.currentTime, 0);
     34    assert_times_equal(animation.currentTime, (t0 - animation.startTime));
     35    assert_equals(animation.playState, "running");
     36 
     37    animation.cancel();
     38  }, 'Animating effect with no target should work.');
     39 
     40  promise_test(async t => {
     41    const effect = new KeyframeEffect(document.getElementById('box'),
     42      { transform: ['translateY(100px)', 'translateY(200px)'] },
     43      { duration: Infinity, iterations: 1 }
     44    );
     45 
     46    const animation = new WorkletAnimation('passthrough', effect);
     47    animation.play();
     48 
     49    // Allow one async animation frame to pass so that animation is running.
     50    await waitForAsyncAnimationFrames(1);
     51    assert_equals(animation.playState, "running");
     52    // Allow time to advance so that we have a non-zero current time.
     53    await waitForDocumentTimelineAdvance();
     54    const t0 = document.timeline.currentTime;
     55    assert_greater_than(animation.currentTime, 0);
     56    assert_times_equal(animation.currentTime, (t0 - animation.startTime));
     57    assert_equals(animation.playState, "running");
     58 
     59    await waitForDocumentTimelineAdvance();
     60    animation.effect.target = null;
     61    const t1 = document.timeline.currentTime;
     62    assert_times_equal(animation.currentTime, (t1 - animation.startTime));
     63    assert_equals(animation.playState, "running");
     64 
     65    await waitForDocumentTimelineAdvance();
     66    animation.effect.target = document.getElementById('box');
     67    const t2 = document.timeline.currentTime;
     68    assert_times_equal(animation.currentTime, (t2 - animation.startTime));
     69    assert_equals(animation.playState, "running");
     70 
     71    animation.cancel();
     72  }, 'The existence of a target does not affect the animation.');
     73 
     74  done();
     75 }
     76 </script>