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Test Info: Warnings
- This test has a WPT meta file that expects 1 subtest issues.
- This WPT test may be referenced by the following Test IDs:
- /scroll-animations/animation-trigger/trigger-scope-scoped-tree-order.tentative.html - WPT Dashboard Interop Dashboard
<!DOCTYPE html>
<html>
<head>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/web-animations/testcommon.js"></script>
<script src="/dom/events/scrolling/scroll_support.js"></script>
<script src="support/support.js"></script>
<script src="support/trigger-scope-support.js"></script>
</head>
<body>
<style>
@keyframes expand {
from { transform: scaleX(1) }
to { transform: scaleX(2) }
}
#scroller {
overflow-y: scroll;
height: 200px;
width: 200px;
border: solid 1px;
trigger-scope: all;
display: block;
position: relative;
}
.source {
top: 100%;
height: 100px;
width: 100px;
background-color: blue;
timeline-trigger: --trigger view() contain;
}
.target {
background-color: red;
height: 100px;
width: 100px;
animation: expand linear 1s both;
animation-trigger: --trigger play-forwards play-backwards;
position: sticky;
top: 0%;
left: 50%;
}
.long {
width: 50%;
height: 100%;
}
</style>
<div id="scroller">
<div id="target" class="target">Target</div>
<div class="long"></div>
<div id="source1" class="source">SOURCE 1</div>
<div class="long"></div>
<div id="source2" class="source">SOURCE 2</div>
<div class="long"></div>
<div id="source3" class="source">SOURCE 3</div>
<div class="long"></div>
<div id="source4" class="source">SOURCE 4</div>
<div class="long"></div>
<div id="source5" class="source">SOURCE 5</div>
<div class="long"></div>
</div>
<script>
promise_test(async() => {
// The in-scope targets should be attached to the trigger and paused at
// time 0.
await assert_playstate_and_current_time(target.id,
target.getAnimations()[0],
"paused");
let scrollend_promise;
// Sources 1 through 4 come earlier than source5 in tree-order so they
// should have no effect.
for (const source of [source1, source2, source3, source4]) {
scrollend_promise =
waitForScrollEndFallbackToDelayWithoutScrollEvent(scroller);
source.scrollIntoView({block: "center"});
await scrollend_promise;
await waitForCompositorReady();
await assert_playstate_and_current_time(target.id,
target.getAnimations()[0],
"paused");
}
scrollend_promise =
waitForScrollEndFallbackToDelayWithoutScrollEvent(scroller);
source5.scrollIntoView({block: "center"});
await scrollend_promise;
await waitForCompositorReady();
await assert_greater_than(scroller.scrollTop, 0, "did scroll");
// The in-scope targets should now be playing as the trigger condition
// has been met.
await assert_playstate_and_current_time(target.id,
target.getAnimations()[0],
"running");
}, "Among in-scope triggers with same name, last in tree-order is "+
"selected.");
</script>
</body>
</html>