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<!DOCTYPE html>
<title>Named view-timeline lookup</title>
<link rel="help" src="https://drafts.csswg.org/scroll-animations-1/#view-timelines-named">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/web-animations/testcommon.js"></script>
<script src="support/testcommon.js"></script>
<style>
@keyframes anim {
from { z-index: 0; }
to { z-index: 100; }
}
.scroller {
overflow: auto;
width: 100px;
height: 100px;
}
.scroller > div {
height: 25px;
z-index: -1;
}
</style>
<main id=main></main>
<script>
function inflate(t, template) {
t.add_cleanup(() => main.replaceChildren());
main.append(template.content.cloneNode(true));
main.offsetTop;
}
</script>
<template id=timeline_self>
<style>
#target {
height: 0px;
view-timeline: t1;
animation: anim 1s linear;
animation-timeline: t1;
}
</style>
<div id=scroller class=scroller>
<div id=target></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
</div>
</template>
<script>
promise_test(async (t) => {
inflate(t, timeline_self);
await waitForNextFrame();
assert_equals(getComputedStyle(target).zIndex, '100');
}, 'view-timeline on self');
</script>
<template id=timeline_preceding_sibling>
<style>
#scroller {
view-timeline: t1 defer;
}
#timeline {
height: 0px;
view-timeline: t1 ancestor;
}
#target {
animation: anim 1s linear;
animation-timeline: t1;
}
</style>
<div id=scroller class=scroller>
<div></div>
<div id=timeline></div>
<div></div>
<div></div>
<div id=target></div>
<div></div>
<div></div>
</div>
</template>
<script>
promise_test(async (t) => {
inflate(t, timeline_preceding_sibling);
await waitForNextFrame();
assert_equals(getComputedStyle(target).zIndex, '75');
}, 'view-timeline on preceding sibling');
</script>
<template id=timeline_ancestor>
<style>
#timeline {
height: 0px;
view-timeline: t1;
}
#target {
animation: anim 1s linear;
animation-timeline: t1;
}
</style>
<div id=scroller class=scroller>
<div></div>
<div></div>
<div></div>
<div id=timeline>
<div>
<div id=target></div>
</div>
</div>
<div></div>
<div></div>
</div>
</template>
<script>
promise_test(async (t) => {
inflate(t, timeline_ancestor);
await waitForNextFrame();
assert_equals(getComputedStyle(target).zIndex, '25');
}, 'view-timeline on ancestor');
</script>
<template id=timeline_ancestor_sibling>
<style>
#scroller {
view-timeline: t1 defer;
}
#timeline {
height: 0px;
view-timeline: t1 ancestor;
}
#target {
animation: anim 1s linear;
animation-timeline: t1;
}
</style>
<div id=scroller class=scroller>
<div></div>
<div id=timeline></div>
<div></div>
<div>
<div>
<div id=target></div>
</div>
</div>
<div></div>
<div></div>
</div>
</template>
<script>
promise_test(async (t) => {
inflate(t, timeline_ancestor_sibling);
await waitForNextFrame();
assert_equals(getComputedStyle(target).zIndex, '75');
}, 'view-timeline on ancestor sibling');
</script>
<template id=timeline_ancestor_sibling_conflict>
<style>
#scroller {
view-timeline: t1 defer;
}
#timeline1, #timeline2 {
height: 0px;
view-timeline: t1 ancestor;
}
#target {
animation: anim 1s linear;
animation-timeline: t1;
}
</style>
<div id=scroller class=scroller>
<div></div>
<div id=timeline1></div>
<div></div>
<div id=timeline2></div>
<div>
<div>
<div id=target></div>
</div>
</div>
<div></div>
<div></div>
</div>
</template>
<script>
promise_test(async (t) => {
inflate(t, timeline_ancestor_sibling_conflict);
await waitForNextFrame();
assert_equals(getComputedStyle(target).zIndex, 'auto');
}, 'view-timeline on ancestor sibling, conflict remains unresolved');
</script>
<template id=timeline_ancestor_closer_timeline_wins>
<style>
#scroller {
view-timeline: t1 defer;
}
#timeline {
height: 0px;
view-timeline: t1 ancestor;
}
#parent {
scroll-timeline: t1 defer;
}
#target {
animation: anim 1s linear;
animation-timeline: t1;
}
</style>
<div id=scroller class=scroller>
<div></div>
<div id=timeline></div>
<div></div>
<div id=parent>
<div id=target></div>
</div>
<div></div>
<div></div>
</div>
</template>
<script>
promise_test(async (t) => {
inflate(t, timeline_ancestor_closer_timeline_wins);
await waitForNextFrame();
assert_equals(getComputedStyle(target).zIndex, 'auto');
}, 'view-timeline on ancestor sibling, closer timeline wins');
</script>
<template id=timeline_ancestor_scroll_timeline_wins_on_same_element>
<style>
#scroller {
view-timeline: t1 defer;
scroll-timeline: t1 defer;
}
#timelines {
height: 0px;
view-timeline: t1 ancestor;
scroll-timeline: t1 ancestor;
overflow: auto;
}
#timelines > div {
height: 50px;
}
#target {
animation: anim 1s linear;
animation-timeline: t1;
}
</style>
<div id=scroller class=scroller>
<div></div>
<div id=timelines>
<div></div>
</div>
<div></div>
<div>
<div>
<div id=target></div>
</div>
</div>
<div></div>
<div></div>
</div>
</template>
<script>
promise_test(async (t) => {
inflate(t, timeline_ancestor_scroll_timeline_wins_on_same_element);
await waitForNextFrame();
// In case of a name conflict on the same element, scroll progress timelines
// take precedence over view progress timelines.
// https://drafts.csswg.org/scroll-animations-1/#timeline-scope
assert_equals(getComputedStyle(target).zIndex, '0');
}, 'view-timeline on ancestor sibling, scroll-timeline wins on same element');
</script>
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