<!DOCTYPE html>
<html class="reftest-wait">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="help" src="https://drafts.csswg.org/scroll-animations-1/">
<link rel="match" href="animation-fill-outside-range-ref.html">
<script src="/common/reftest-wait.js"></script>
<script src="/web-animations/testcommon.js"></script>
<style>
  .scroller {
    height: 200px;
    width: 500px;
    overflow: auto;
    position: absolute;
    top: 100px;
  }

  .anim {
    position: absolute;
    width: 100px;
    height: 100px;
    background: darkred;
    view-timeline: --view;
  }
  .anim.contain {
    background: green;
  }
  .spacer {
    height: 1000px;
  }

  .before {
    top: 450px;
  }
  .after {
    top: 50px;
  }
  .contain {
    top: 250px;
  }
  @keyframes opaque-before {
    0% { opacity: 1; }
    0.01% { opacity : 0; }
    100% { opacity : 0; }
  }
  @keyframes opaque-after {
    0% { opacity: 0; }
    99.9% { opacity : 0; }
    100% { opacity : 1; }
  }
  .indicator {
    position: fixed;
    top: 50px;
  }
  .contain .indicator {
    top: 100px;
  }
  .contain .indicator:nth-child(2) {
    left: 200px;
  }

  .after .indicator {
    left: 200px;
  }

  .indicator > div {
    display: inline-block;
    width: 25px;
    height: 25px;
    position: relative;
    border-radius: 100%;
    box-sizing: border-box;
    border: 2px solid black;
    padding: 3px;
    background: lightgray;
    background-clip: content-box;
  }

  .indicator > div > div {
    width: 100%;
    height: 100%;
    border-radius: 100%;
    background: green;
    opacity: 0;
    animation-fill-mode: both;
    animation-timeline: --view;
  }

  .after .indicator > div > div,
  .contain .indicator > div > div {
    animation-name: opaque-after;
  }
  .before .indicator > div > div,
  .contain .indicator:nth-child(2) > div > div {
    animation-name: opaque-before;
  }

  .contain .indicator > div > div {
    animation-range: entry;
  }

  .contain .indicator:nth-child(2) > div > div {
    animation-range: exit;
  }

</style>
</head>
<body>
  <p>All of the activity indicators should be active as the animations should be filling.</p>
  <div class="scroller">
    <div class="anim after"><div class="indicator">After cover phase: <div><div></div></div></div></div>
    <div class="anim before"><div class="indicator">Before cover phase: <div><div></div></div></div></div>
    <div class="anim contain">
      <div class="indicator entry">After entry phase: <div><div></div></div></div>
      <div class="indicator exit">Before exit phase: <div><div></div></div></div>
    </div>
    <div class="spacer"></div>
  </div>
</body>
<script>
  async function run() {
    let scroller = document.querySelector('.scroller');
    // Scroll such that each animation becomes active.
    scroller.scrollTo(0, 0);
    await waitForCompositorReady();
    scroller.scrollTo({top: 400});
    await waitForNextFrame();

    // Then scroll between them so that we are before one and after the other.
    scroller.scrollTo({top: 200});
    await waitForNextFrame();
    takeScreenshot();
  }
  run();
</script>
</html>
