| <!doctype html> |
| <meta charset="utf-8"> |
| <title>Single-axis scroll containers clamp disabled axes on dynamic style changes</title> |
| <link rel="help" href="https://drafts.csswg.org/cssom-view/#dom-element-scrollto"> |
| <link rel="help" href="https://drafts.csswg.org/cssom-view/#dom-element-scrollwidth"> |
| <link rel="help" href="https://drafts.csswg.org/cssom-view/#dom-element-scrollheight"> |
| <link rel="help" href="https://github.com/w3c/csswg-drafts/issues/5572"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <style> |
| body { |
| margin: 0; |
| } |
| |
| #scroller { |
| position: fixed; |
| top: 0; |
| left: 0; |
| width: 100px; |
| height: 100px; |
| overflow: hidden; |
| scrollbar-width: none; |
| } |
| |
| #content { |
| width: 300px; |
| height: 300px; |
| } |
| </style> |
| <div id="log"></div> |
| <div id="scroller"><div id="content"></div></div> |
| <script> |
| test(() => { |
| const scroller = document.getElementById('scroller'); |
| |
| assert_equals(scroller.scrollWidth, 300); |
| assert_equals(scroller.scrollHeight, 300); |
| |
| scroller.scrollTo(40, 50); |
| assert_equals(scroller.scrollLeft, 40); |
| assert_equals(scroller.scrollTop, 50); |
| |
| scroller.style.overflowX = 'scroll'; |
| scroller.style.overflowY = 'clip'; |
| |
| assert_equals(scroller.scrollLeft, 40); |
| assert_equals(scroller.scrollTop, 0); |
| assert_equals(scroller.scrollWidth, 300); |
| assert_equals(scroller.scrollHeight, 300); |
| }, 'changing from overflow: hidden to a single-axis scroller clamps the disabled axis and its scroll dimensions'); |
| </script> |
