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- This WPT test may be referenced by the following Test IDs:
- /css/css-overflow/unicode-bidi-plaintext-scroll-direction.html - WPT Dashboard Interop Dashboard
<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS Overflow Test: unicode-bidi: plaintext doesn't affect the scroll direction of a scroll container, dir=auto does</title>
<link rel="author" title="Emilio Cobos Álvarez" href="mailto:emilio@crisal.io">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<style>
.scroller {
width: 200px;
font: 30px sans-serif;
overflow-x: auto;
white-space: nowrap;
}
</style>
<div class="scroller" id="plaintext-div-text" style="unicode-bidi: plaintext">اسماء.شبكة/%20/test/</div>
<div class="scroller" id="plaintext-div-span" style="unicode-bidi: plaintext"><span>اسماء.شبكة/%20/test/</span></div>
<textarea class="scroller" id="plaintext-textarea" style="unicode-bidi: plaintext" rows="1">اسماء.شبكة/%20/test/</textarea>
<input class="scroller" id="plaintext-input" style="unicode-bidi: plaintext" value="اسماء.شبكة/%20/test/">
<div class="scroller" id="auto-div-text" dir="auto">اسماء.شبكة/%20/test/</div>
<div class="scroller" id="auto-div-span" dir="auto"><span>اسماء.شبكة/%20/test/</span></div>
<textarea class="scroller" id="auto-textarea" dir="auto" rows="1">اسماء.شبكة/%20/test/</textarea>
<input class="scroller" id="auto-input" dir="auto" value="اسماء.شبكة/%20/test/">
<script>
// unicode-bidi: plaintext doesn't change the scroll container's scroll
// direction.
for (const id of ["plaintext-div-text", "plaintext-div-span", "plaintext-textarea", "plaintext-input"]) {
test(() => {
const el = document.getElementById(id);
assert_equals(getComputedStyle(el).direction, "ltr");
assert_equals(el.scrollWidth, el.clientWidth, "should not be scrollable");
}, `unicode-bidi: plaintext content opposite to the container's direction isn't scrollable (#${id})`);
}
// dir=auto affects direction, which affects the scroll direction.
for (const id of ["auto-div-text", "auto-div-span", "auto-textarea", "auto-input"]) {
test(() => {
const el = document.getElementById(id);
assert_equals(getComputedStyle(el).direction, "rtl");
assert_greater_than(el.scrollWidth, el.clientWidth, "element should overflow");
el.scrollLeft = 100000;
assert_equals(el.scrollLeft, 0, "Should scroll to the left");
el.scrollLeft = -100000;
assert_approx_equals(el.scrollLeft, -(el.scrollWidth - el.clientWidth), 1,
"min scroll offset should match a plain rtl scroller");
}, `dir=auto makes rtl-dominant content scrollable (#${id})`);
}
</script>