| <!DOCTYPE html> |
| <title>CSSOM View - scrollIntoView container option</title> |
| <meta charset="utf-8"> |
| <meta name="viewport" content="initial-scale=1"> |
| <link rel="author" title="Rob Flack" href="mailto:flackr@chromium.org"> |
| <link rel="help" href="https://drafts.csswg.org/cssom-view/#dom-element-scrollintoview"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <style> |
| .scroller { |
| overflow: auto; |
| height: 200px; |
| } |
| .spacer { |
| height: 400px; |
| } |
| #target { |
| height: 200px; |
| } |
| </style> |
| <script> |
| let setFrameLoaded = null; |
| let frameLoaded = new Promise(resolve => { |
| setFrameLoaded = resolve; |
| }); |
| </script> |
| <div id="outer" class="scroller"> |
| <div class="spacer"></div> |
| <div id="inner" class="scroller"> |
| <div class="spacer"></div> |
| <div id="target"></div> |
| <iframe id="frame" height="200" src="resources/scrollIntoView-frame.html" onload="setFrameLoaded()"></iframe> |
| </div> |
| </div> |
| <script> |
| const outer = document.getElementById('outer'); |
| const inner = document.getElementById('inner'); |
| const target = document.getElementById('target'); |
| |
| function reset() { |
| outer.scrollTop = 0; |
| inner.scrollTop = 0; |
| } |
| |
| test(() => { |
| reset(); |
| target.scrollIntoView(); |
| assert_equals(inner.scrollTop, 400, '#inner scrollTop'); |
| assert_equals(outer.scrollTop, 400, '#outer scrollTop'); |
| }, `scrollIntoView() defaults to scrolling ancestors`); |
| |
| test(() => { |
| reset(); |
| target.scrollIntoView({container: 'all'}); |
| assert_equals(inner.scrollTop, 400, '#inner scrollTop'); |
| assert_equals(outer.scrollTop, 400, '#outer scrollTop'); |
| }, `scrollIntoView({container: 'all'}) scrolls ancestors`); |
| |
| test(() => { |
| reset(); |
| target.scrollIntoView({container: 'nearest'}); |
| assert_equals(inner.scrollTop, 400, '#inner scrollTop'); |
| assert_equals(outer.scrollTop, 0, '#outer scrollTop'); |
| }, `scrollIntoView({container: 'nearest'}) only scrolls nearest scroll container`); |
| |
| test(() => { |
| reset(); |
| inner.scrollIntoView({container: 'nearest'}); |
| assert_equals(outer.scrollTop, 400, '#outer scrollTop'); |
| assert_equals(inner.scrollTop, 0, '#inner scrollTop'); |
| }, `scrollIntoView({container: 'nearest'}) doesn't stop at itself`); |
| |
| promise_test(async () => { |
| reset(); |
| await frameLoaded; |
| const frameDoc = document.getElementById("frame").contentDocument; |
| const frameTarget = frameDoc.getElementById("target"); |
| frameTarget.scrollIntoView({container: 'nearest'}); |
| assert_equals(frameDoc.scrollingElement.scrollTop, 400, 'frame scrollingElement scrollTop'); |
| assert_equals(inner.scrollTop, 0, '#inner scrollTop'); |
| assert_equals(outer.scrollTop, 0, '#outer scrollTop'); |
| }, `scrollIntoView({container: 'nearest'}) doesn't propagate to outer frames`); |
| |
| </script> |
