<!DOCTYPE html> | |
<meta charset="UTF-8"> | |
<title>CSS Writing Modes Test: computed 'direction' of root element when 'writing-mode' for <body> propagates to viewport</title> | |
<link rel="author" title="GĂ©rard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/"> | |
<link rel="help" href="https://www.w3.org/TR/css-writing-modes-3/#principal-flow"> | |
<!-- | |
Issue 3066: [css-writing-modes] Does vertical writing mode of an HTML body | |
element cause an orthogonal flow? | |
https://github.com/w3c/csswg-drafts/issues/3066 | |
--> | |
<meta name="assert" content="When the root element has a <body> child element, then the principal writing mode is instead taken from the values of 'writing-mode' and 'direction' on such first child element instead of taken from the root element. In this test, a small script verifies that the computed value of 'direction' of the root element itself is not affected by such propagation."> | |
<!-- | |
This test *only* verifies the computed value of 'direction' of the | |
root element. | |
This test does *not* verify if the 'writing-mode' value of | |
the body element propagates to the root element. | |
--> | |
<script src="/resources/testharness.js"></script> | |
<script src="/resources/testharnessreport.js"></script> | |
<style> | |
html | |
{ | |
direction: rtl; | |
writing-mode: vertical-lr; | |
} | |
body | |
{ | |
direction: ltr; | |
writing-mode: vertical-rl; | |
} | |
</style> | |
<script> | |
function startTesting() | |
{ | |
test(function() | |
{ | |
assert_equals(getComputedStyle(document.documentElement).direction, "rtl" ); | |
}, "First test on computed value of 'direction' of root element."); | |
} | |
startTesting(); | |
</script> |