56 lines
2 KiB
HTML
56 lines
2 KiB
HTML
<!DOCTYPE html>
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<html>
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<meta name="viewport" content="width=device-width,initial-scale=1">
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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="/resources/testdriver.js"></script>
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<script src="/resources/testdriver-actions.js"></script>
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<script src="/resources/testdriver-vendor.js"></script>
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<script src="support/action-utils.js"></script>
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<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1943865">
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<link rel="help" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1943053">
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<link rel="help" href="https://drafts.csswg.org/cssom-view/#perform-a-scroll">
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<style>
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body {
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margin: 0px;
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padding: 0px;
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}
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</style>
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<div id="anchor"></div>
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<div style="position: fixed; bottom: 0;">
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<div style="position: absolute; bottom: 0;">
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<input type="text" id="name" />
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</div>
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</div>
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<script>
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promise_test(async t => {
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assert_equals(window.scrollY, 0);
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assert_equals(visualViewport.scale, 1.0);
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assert_equals(visualViewport.pageTop, 0);
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// Pinch zoom in this document.
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await pinch_zoom_action();
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assert_greater_than(visualViewport.scale, 1.0);
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// Suppose that the pinch zoom-in gesture at the center of the document did
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// move the visual viewport offset.
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assert_greater_than(visualViewport.pageTop, 0);
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// Move to zero offset of the visual viewport.
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let scrollPromise =
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new Promise(resolve => visualViewport.addEventListener("scroll", resolve));
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document.querySelector('#anchor').scrollIntoView({ behavior: "instant" });
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await scrollPromise;
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assert_equals(visualViewport.pageTop, 0);
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// Now trigger a scrollIntoView call to an element inside a position:fixed element.
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scrollPromise =
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new Promise(resolve => visualViewport.addEventListener("scroll", resolve));
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document.querySelector('#name').scrollIntoView({ behavior: "instant" });
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await scrollPromise;
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assert_greater_than(visualViewport.pageTop, 0);
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}, "Element.scrollIntoView scrolls visually");
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</script>
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