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<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width; initial-scale=1.0">
<title>Basic test that click and hold on a scrollbar button works as expected</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>
<script type="text/javascript">
async function test() {
let utils = SpecialPowers.getDOMWindowUtils(window);
let scroller = document.getElementById('scroller');
let w = {}, h = {};
utils.getScrollbarSizes(scroller, w, h);
let verticalScrollbarWidth = w.value;
if (verticalScrollbarWidth == 0) {
ok(false, "No scrollbar, test will fail");
}
let downArrowHeight = verticalScrollbarWidth; // assume square scrollbar buttons
var mouseX = scroller.clientWidth + verticalScrollbarWidth / 2;
let mouseY = scroller.clientHeight - (downArrowHeight / 2);
let waitForScroll = waitForScrollEvent(scroller);
info("Synthesizing click at (" + mouseX + ", " + mouseY);
await promiseNativeMouseEventWithAPZ({
type: "click",
target: scroller,
offsetX: mouseX,
offsetY: mouseY,
});
await waitForScroll;
// Sanity-check: we should have scrolled.
ok(scroller.scrollTop > 0, "Should have scrolled by clicking the scrollbar button");
let startPos = scroller.scrollTop;
info("scroller.scrollTop " + scroller.scrollTop);
// mouse move over the scrollbar button
await promiseNativeMouseEventWithAPZ({
type: "mousemove",
target: scroller,
offsetX: mouseX,
offsetY: mouseY,
});
// mouse down
await promiseNativeMouseEventWithAPZ({
type: "mousedown",
target: scroller,
offsetX: mouseX,
offsetY: mouseY,
});
info("sent mouse down");
info("scroller.scrollTop " + scroller.scrollTop);
// mouse down on the scrollbar button and then wait until
// we scroll more 2x the distance of one click.
while ((scroller.scrollTop - startPos) < 2*startPos) {
let waitForScroll2 = waitForScrollEvent(scroller);
// Wait a bit
await SpecialPowers.promiseTimeout(50);
await waitForScroll2;
info("loop scroller.scrollTop " + scroller.scrollTop);
}
await promiseNativeMouseEventWithAPZ({
type: "mouseup",
target: scroller,
offsetX: mouseX,
offsetY: mouseY,
});
ok(true, "got enough scroll");
}
waitUntilApzStable()
.then(test)
.then(subtestDone, subtestFailed);
</script>
<style>
.spacer {
background-color: #212121;
height: 9000vh;
}
</style>
</head>
<body>
<div id="scroller" style="overflow: auto; width: 200px; height: 200px;">
<div class="spacer"></div>
</div>
</body>
</html>