| <!DOCTYPE html> |
| <title>@container: scroll-state(scrolled) multiple scrollers</title> |
| <link rel="help" href="https://drafts.csswg.org/css-conditional-5/#scrolled"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="/resources/testdriver.js"></script> |
| <script src="/resources/testdriver-actions.js"></script> |
| <script src="/resources/testdriver-vendor.js"></script> |
| <script src="/web-animations/testcommon.js"></script> |
| <script src="/dom/events/scrolling/scroll_support.js"></script> |
| <script src="/css/css-conditional/container-queries/support/cq-testcommon.js"></script> |
| <style> |
| .scroller { |
| width: 200px; |
| height: 200px; |
| container-type: scroll-state; |
| overflow-y: scroll; |
| } |
| .filler { |
| height: 600px; |
| } |
| .target { |
| --top1: no; |
| --top2: no; |
| --bottom1: no; |
| --bottom2: no; |
| } |
| #target1 { |
| @container scroll-state(scrolled: top) { |
| --top1: yes; |
| } |
| @container scroll-state(scrolled: bottom) { |
| --bottom1: yes; |
| } |
| } |
| #target2 { |
| @container scroll-state(scrolled: top) { |
| --top2: yes; |
| } |
| @container scroll-state(scrolled: bottom) { |
| --bottom2: yes; |
| } |
| } |
| </style> |
| <div id="scroller1" class="scroller"> |
| <div class="filler"> |
| <div id="target1" class="target"></div> |
| </div> |
| </div> |
| <div id="scroller2" class="scroller"> |
| <div class="filler"> |
| <div id="target2" class="target"></div> |
| </div> |
| </div> |
| <script> |
| setup(() => assert_implements_scroll_state_container_queries()); |
| |
| function touch_scroll(start_pos, end_pos) { |
| return new test_driver.Actions() |
| .addPointer("TestPointer", "touch") |
| .pointerMove(Math.round(start_pos.x), Math.round(start_pos.y)) |
| .pointerDown() |
| .addTick() |
| .pause(200) |
| .pointerMove(Math.round(end_pos.x), Math.round(end_pos.y)) |
| .addTick() |
| .pointerUp() |
| .send(); |
| } |
| |
| promise_test(async t => { |
| let scrollEndPromise1 = waitForScrollEndFallbackToDelayWithoutScrollEvent(scroller1); |
| let scrollEndPromise2 = waitForScrollEndFallbackToDelayWithoutScrollEvent(scroller2); |
| |
| scroller1.addEventListener('scroll', () => { |
| scroller2.scrollTop = 300; |
| scroller2.scrollBy({top: -150, behavior: "smooth"}); |
| }, { once: true }); |
| |
| // Scroll element position |
| const start = { |
| x: 100, |
| y: 100, |
| }; |
| const end = { x: 100, y: 0 }; |
| await touch_scroll(start, end); |
| |
| await Promise.all([scrollEndPromise1, scrollEndPromise2]); |
| await waitForAnimationFrames(2); |
| |
| assert_equals(getComputedStyle(target1).getPropertyValue("--top1"), "no"); |
| assert_equals(getComputedStyle(target1).getPropertyValue("--bottom1"), "yes"); |
| assert_equals(scroller2.scrollTop, 150); |
| assert_equals(getComputedStyle(target2).getPropertyValue("--top2"), "yes"); |
| assert_equals(getComputedStyle(target2).getPropertyValue("--bottom2"), "no"); |
| }, "User scroll caused programmatic relative scroll"); |
| |
| </script> |
