forked from mirrors/gecko-dev
1bee394ccc
Automatic update from web-platform-tests Update scrollbar-gutter to new version of the spec Update the implementation of scrollbar-gutter to match the new spec: https://drafts.csswg.org/css-overflow-4/#scrollbar-gutter-property The syntax is is simplified to: auto | stable && mirror? The "stable" value also applies when overflow is "hidden". The "always" and "force" keywords have been removed. The "both" keyword has been renamed to "mirror". This CL updates all affected tests to match the new spec. Bug: 710214 Change-Id: I4a22a1abc821fa8982759cee3b69089f75dce229 Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2970809 Reviewed-by: Rune Lillesveen <futhark@chromium.org> Reviewed-by: Philip Rogers <pdr@chromium.org> Commit-Queue: Felipe Erias <felipeerias@igalia.com> Cr-Commit-Position: refs/heads/master@{#896301} -- wpt-commits: 88543e2b64be5702179549bd94983613634c187a wpt-pr: 29451
56 lines
1.7 KiB
HTML
56 lines
1.7 KiB
HTML
<!doctype html>
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<meta charset="utf-8">
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<title>CSS Overflow: scrollbar-gutter on the root with overflow:auto, not scrolling</title>
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<link rel="author" title="Felipe Erias Morandeira" href="mailto:felipeerias@igalia.com" />
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<link rel="help" href="https://drafts.csswg.org/css-overflow-4/#scrollbar-gutter-property" />
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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/support/parsing-testcommon.js"></script>
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<style>
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body,
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html {
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margin: 0;
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padding: 0;
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border: none;
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}
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:root {
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scrollbar-gutter: stable;
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overflow: auto;
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}
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#content {
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background: green;
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width: 100%;
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height: 100px;
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}
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</style>
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<body>
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<div id="content"></div>
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<script type="text/javascript">
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setup({ explicit_done: true });
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test(function () {
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let root = document.documentElement;
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let body = document.body;
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let content = document.getElementById('content');
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// Note: as per the spec, the clientWidth of the root element is
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// "viewport width excluding the size of a rendered scroll bar (if any)"
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// which does not take scrollbar-gutter into account.
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// Since no such special case exists for offsetWidth, this means that here
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// root.clientWidth is greater than root.offsetWidth (!!!).
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assert_less_than(root.offsetWidth, window.innerWidth, "viewport has gutter");
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assert_equals(body.offsetWidth, root.offsetWidth, "body matches root");
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assert_equals(body.clientWidth, body.offsetWidth, "body has no gutter");
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assert_equals(content.offsetWidth, body.clientWidth, "content matches body");
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}, "viewport has gutter, others do not");
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done();
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</script>
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</body>
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