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<!DOCTYPE html>
<title>@container: scroll-state(direction) PageUp/PageDown keys press scroll</title>
<link rel="help" href="https://drafts.csswg.org/css-conditional-5/#direction">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/testdriver.js"></script>
<script src="/resources/testdriver-actions.js"></script>
<script src="/resources/testdriver-vendor.js"></script>
<script src="/web-animations/testcommon.js"></script>
<script src="/css/css-conditional/container-queries/support/cq-testcommon.js"></script>
<style>
#scroller {
width: 200px;
height: 200px;
container-type: scroll-state;
overflow-y: scroll;
}
#filler {
height: 600px;
}
#target {
--none: no;
--top: no;
@container scroll-state(direction: none) {
--none: yes;
}
@container scroll-state(direction: top) {
--top: yes;
}
}
</style>
<div id="scroller">
<div id="filler">
<div id="target"></div>
</div>
</div>
<script>
setup(() => assert_implements_scroll_state_container_queries());
promise_test(async t => {
const PageUp = '\uE00E';
const PageDown = '\uE00F';
scroller.focus();
await new test_driver.Actions()
.keyDown(PageUp)
.keyUp(PageUp)
.send();
await new test_driver.Actions()
.keyDown(PageUp)
.keyUp(PageUp)
.send();
await waitForAnimationFrames(2);
assert_equals(getComputedStyle(target).getPropertyValue("--none"), "yes");
assert_equals(getComputedStyle(target).getPropertyValue("--top"), "no");
}, "PageUp key shouldn't scroll when scroller is already on top");
promise_test(async t => {
const PageUp = '\uE00E';
const PageDown = '\uE00F';
scroller.scrollTop = 100;
scroller.focus();
await new test_driver.Actions()
.keyDown(PageUp)
.keyUp(PageUp)
.send();
await new test_driver.Actions()
.keyDown(PageUp)
.keyUp(PageUp)
.send();
await waitForAnimationFrames(2);
assert_equals(getComputedStyle(target).getPropertyValue("--top"), "yes");
}, "PageUp key scroll");
</script>
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