| <!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="Gérard 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> |