<!DOCTYPE HTML>
<meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1">
<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="scroll_support.js"></script>
<style>
#overscrollXDiv {
width: 200px;
height: 200px;
overflow: scroll;
overscroll-behavior-x: contain;
border: solid 1px black;
display: grid;
/* Places content and targetXDiv beside each other. */
grid-template-columns: 500px 100px;
}
#overscrollYDiv {
width: 200px;
height: 200px;
overflow: scroll;
overscroll-behavior-y: none;
border: solid 1px black;
}
#targetXDiv {
width: 100px;
height: 100px;
overflow: scroll;
border: solid 1px black;
}
#targetYDiv {
width: 100px;
height: 100px;
overflow: scroll;
border: solid 1px black;
}
.content {
width: 500px;
height: 500px;
}
#spacer {
height: 200vh;
width: 200vw;
border: solid 1px black;
}
</style>
<body style="margin:0" onload=runTest()>
<div id="overscrollXDiv">
<div class="content"></div>
<div id="targetXDiv">
<div class="content">
</div>
</div>
</div>
<div id="overscrollYDiv">
<div class="content"></div>
<!-- Place targetYDiv below content so that is in view when
overscrollYDiv is scrolled all the way down -->
<div id="targetYDiv">
<div class="content">
</div>
</div>
</div>
<div id="spacer"></div>
</body>
<script>
var horizontal_scrollend_arrived = false;
var vertical_scrollend_arrived = false;
let scrollers = [document.scrollingElement, targetXDiv, targetYDiv,
overscrollXDiv, overscrollYDiv];
async function resetScrollers(test) {
for (const scroller of scrollers) {
await resetTargetScrollState(test, scroller);
}
}
function onHorizontalScrollEnd(event) {
assert_false(event.cancelable);
assert_false(event.bubbles);
horizontal_scrollend_arrived = true;
}
function onVerticalScrollEnd(event) {
assert_false(event.cancelable);
assert_false(event.bubbles);
vertical_scrollend_arrived = true;
}
// Test that both "onscrollend" and addEventListener("scrollend"... work.
document.getElementById('overscrollXDiv').onscrollend = onHorizontalScrollEnd;
document.getElementById('overscrollYDiv').
addEventListener("scrollend", onVerticalScrollEnd);
function runTest() {
promise_test(async (t) => {
await resetScrollers(t);
await waitForCompositorCommit();
// Make sure that no scrollend event is sent to document.
document.addEventListener("scrollend",
t.unreached_func("Document got unexpected scrollend event."));
let scrollend_promise;
scrollend_promise = waitForScrollendEvent(t, targetXDiv, 2000);
targetXDiv.scrollLeft = targetXDiv.scrollWidth;
await scrollend_promise;
scrollend_promise = waitForScrollendEvent(t, overscrollXDiv, 2000);
overscrollXDiv.scrollLeft = overscrollXDiv.scrollWidth;
await scrollend_promise;
horizontal_scrollend_arrived = false;
assert_equals(targetXDiv.scrollLeft,
targetXDiv.scrollWidth - targetXDiv.clientWidth);
assert_equals(overscrollXDiv.scrollLeft,
overscrollXDiv.scrollWidth - overscrollXDiv.clientWidth);
// Attempt to scroll targetXDiv further to the right.
// targetXDiv and overscrollXDiv are already fully scrolled right but the
// scroll should not propagate to the document because of
// overscroll-behavior-x: contain on overscrollXDiv.
let touchEndPromise = new Promise((resolve) => {
targetXDiv.addEventListener("touchend", resolve);
});
await touchScrollInTarget(100, targetXDiv, 'right');
// The scrollend event should never be fired before the gesture has
// completed.
await touchEndPromise;
scrollend_promise = waitForScrollendEvent(t, targetYDiv, 2000);
targetYDiv.scrollTop = targetXDiv.scrollHeight;
await scrollend_promise;
scrollend_promise = waitForScrollendEvent(t, overscrollYDiv, 2000);
overscrollYDiv.scrollTop = overscrollYDiv.scrollHeight;
await scrollend_promise;
vertical_scrollend_arrived = false;
assert_equals(targetYDiv.scrollTop,
targetYDiv.scrollHeight - targetYDiv.clientHeight);
assert_equals(overscrollYDiv.scrollTop,
overscrollYDiv.scrollHeight - overscrollYDiv.clientHeight);
// Attempt to scroll targetYDiv further down.
// targetYDiv and overscrollYDiv are already fully scrolled down but the
// scroll should not propagate to the document because of
// overscroll-behavior-y: none on overscrollYDiv.
touchEndPromise = new Promise((resolve) => {
targetYDiv.addEventListener("touchend", resolve);
});
await touchScrollInTarget(50, targetYDiv, 'down');
// The scrollend event should never be fired before the gesture has
// completed.
await touchEndPromise;
// Ensure we wait at least a tick after the touch end.
await waitForCompositorCommit();
// We should not trigger a scrollend event for a scroll that did not
// change the scroll position.
assert_equals(horizontal_scrollend_arrived, false,
"overscrollXDiv should not receive scrollend");
assert_equals(vertical_scrollend_arrived, false,
"overscrollYDiv should not receive scrollend");
}, "Tests that the scroll is not propagated beyond div with non-auto " +
"overscroll-behavior.");
}
</script>
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