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<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width; initial-scale=1.0">
<title>Dragging the mouse on a inactive scrollframe's scrollbar</title>
<script type="application/javascript" src="apz_test_native_event_utils.js"></script>
<script type="application/javascript" src="apz_test_utils.js"></script>
<script src="/tests/SimpleTest/paint_listener.js"></script>
<style>
#scrollable {
overflow: scroll;
height: 200px;
width: 200px;
}
.content {
width: 1000px;
height: 2000px;
}
</style>
<script type="text/javascript">
async function test() {
var scrollableDiv = document.getElementById("scrollable");
let scrollPromise = new Promise(resolve => {
scrollableDiv.addEventListener("scroll", resolve, {once: true});
});
var dragFinisher = await promiseVerticalScrollbarDrag(scrollableDiv);
if (!dragFinisher) {
ok(true, "No scrollbar, can't do this test");
return;
}
// the events above might be stuck in APZ input queue for a bit until the
// layer is activated, so we wait here until the scroll event listener is
// triggered.
await scrollPromise;
await dragFinisher();
// Flush everything just to be safe
await promiseOnlyApzControllerFlushed();
// After dragging the scrollbar 20px on a 200px-high scrollable div, we should
// have scrolled approx 10% of the 2000px high content. There might have been
// scroll arrows and such so let's just have a minimum bound of 50px to be safe.
ok(scrollableDiv.scrollTop > 50, "Scrollbar drag resulted in a scroll position of " + scrollableDiv.scrollTop);
}
waitUntilApzStable()
.then(test)
.then(subtestDone, subtestFailed);
</script>
</head>
<body>
<div id="scrollable">
<div class="content">Some content inside the inactive scrollframe</div>
</div>
<div class="content">Some content to ensure the root scrollframe is scrollable and the overflow:scroll div remains inactive</div>
</body>
</html>
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