96 lines
3 KiB
HTML
96 lines
3 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8">
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<title> CSS Scroll Snap 2 Test: scrollsnapchange event on the document bubbles</title>
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<link rel="help" href="https://drafts.csswg.org/css-scroll-snap-2/#snap-events">
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script src="/css/css-scroll-snap-2/resources/common.js"></script>
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<script src="/dom/events/scrolling/scroll_support.js"></script>
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</head>
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<body>
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<style>
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:root {
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margin: 0;
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padding: 0;
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scroll-snap-type: y mandatory;
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}
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div {
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position: absolute;
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margin: 0px;
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}
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#spacer {
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width: 200vw;
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height: 200vh;
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}
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.snap_point {
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width: 40vw;
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height: 40vh;
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scroll-snap-align: start;
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}
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#snap_point_1 {
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left: 0px;
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top: 0px;
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background-color: red;
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}
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#snap_point_2 {
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top: 40vh;
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left: 40vw;
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background-color: orange;
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}
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#snap_point_3 {
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left: 80vw;
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top: 80vh;
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background-color: blue;
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}
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</style>
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<div id="spacer"></div>
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<div id="snap_point_1" class="snap_point"></div>
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<div id="snap_point_2" class="snap_point"></div>
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<div id="snap_point_3" class="snap_point"></div>
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<script>
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promise_test(async(t) => {
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await waitForCompositorCommit();
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let scrollsnapchanging_promise = waitForSnapEvent(window, "scrollsnapchanging");
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let scrollsnapchange_promise = waitForSnapEvent(window, "scrollsnapchange");
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document.scrollingElement.scrollTo(0, snap_point_2.offsetTop);
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let scrollsnapchanging_evt = await scrollsnapchanging_promise;
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let scrollsnapchange_evt = await scrollsnapchange_promise;
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assertSnapEvent(scrollsnapchanging_evt, { inline: null, block: snap_point_2 });
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assertSnapEvent(scrollsnapchange_evt, { inline: null, block: snap_point_2 });
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}, "scrollsnapchange bubbles when fired at the document (addEventListener).");
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promise_test(async(t) => {
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await waitForScrollReset(t, document.scrollingElement);
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await waitForCompositorCommit();
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let scrollsnapchanging_promise = waitForSnapEvent(window, "scrollsnapchanging",
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/*scroll_happens=*/true,
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/*use_onsnap_member=*/true);
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let scrollsnapchange_promise = waitForSnapEvent(window, "scrollsnapchange",
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/*scroll_happens=*/true,
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/*use_onsnap_member=*/true);
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document.scrollingElement.scrollTo(0, snap_point_2.offsetTop);
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let scrollsnapchanging_evt = await scrollsnapchanging_promise;
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let scrollsnapchange_evt = await scrollsnapchange_promise;
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assertSnapEvent(scrollsnapchanging_evt, { inline: null, block: snap_point_2 });
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assertSnapEvent(scrollsnapchange_evt, { inline: null, block: snap_point_2 });
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}, "scrollsnapchange bubbles when fired at the document (onscrollsnapchange).");
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</script>
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</body>
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</html>
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