scroll-marker-activation-scroll.html (2387B)
1 <!doctype html> 2 <meta charset="utf-8"> 3 <title>CSS Test: ::scroll-marker only scrolls associated scrolling container</title> 4 <link rel="help" href="https://drafts.csswg.org/css-overflow-5/#scroll-marker-activation"> 5 <script src="/dom/events/scrolling/scroll_support.js"></script> 6 <script src="/resources/testharness.js"></script> 7 <script src="/resources/testharnessreport.js"></script> 8 <script src="/resources/testdriver.js"></script> 9 <script src="/resources/testdriver-actions.js"></script> 10 <script src="/resources/testdriver-vendor.js"></script> 11 <style> 12 body { 13 margin: 0; 14 } 15 16 #ancestor-scroller { 17 border: 2px solid gray; 18 width: 600px; 19 height: 150px; 20 overflow: auto; 21 position: relative; 22 } 23 24 #marker-scroller { 25 height: 300px; 26 overflow: auto; 27 scroll-snap-type: x mandatory; 28 position: relative; 29 scroll-marker-group: before; 30 white-space: nowrap; 31 } 32 33 #marker-scroller div { 34 scroll-snap-align: start; 35 box-sizing: border-box; 36 border-radius: 5px; 37 background: lightgray; 38 border: 1px solid black; 39 display: inline-block; 40 width: 500px; 41 height: 100%; 42 } 43 44 #marker-scroller::scroll-marker-group { 45 display: flex; 46 height: 100px; 47 } 48 49 #marker-scroller div::scroll-marker { 50 content: ""; 51 width: 100px; 52 height: 100px; 53 box-sizing: border-box; 54 border-radius: 5px; 55 border: 1px solid black; 56 display: inline-block; 57 } 58 #marker-scroller div::scroll-marker:target-current { 59 background: blue; 60 } 61 </style> 62 <div id="ancestor-scroller"> 63 <div id="marker-scroller"> 64 <div>1</div> 65 <div id="target">2</div> 66 <div>3</div> 67 </div> 68 </div> 69 <script> 70 promise_test(async t => { 71 const target = document.querySelector('#target'); 72 const ancestorScroller = document.querySelector('#ancestor-scroller'); 73 const scroller = document.querySelector('#marker-scroller'); 74 const scrollEndPromise = waitForScrollEndFallbackToDelayWithoutScrollEvent(scroller); 75 actions_promise = new test_driver.Actions() 76 .pointerMove(150, 50) 77 .pointerDown() 78 .pointerUp() 79 .send(); 80 await actions_promise; 81 await scrollEndPromise; 82 assert_equals(scroller.scrollLeft, target.offsetLeft, "::scroll-marker activation scrolls to target"); 83 assert_equals(ancestorScroller.scrollTop, 0, "::scroll-marker activation doesn't scroll ancestors"); 84 }); 85 </script>