gecko-dev/dom/events/test/test_bug574663.html

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HTML

<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=574663
-->
<head>
<title>Test for Bug 574663</title>
<script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
<script type="text/javascript" src="/tests/SimpleTest/EventUtils.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
</head>
<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=574663">Mozilla Bug 574663</a>
<p id="display"></p>
<div id="content" style="display: none">
</div>
<pre id="test">
<script type="application/javascript;version=1.7">
/** Test for Bug 574663 **/
// SimpleTest's paint_listener does not work on other windows, so we inline
// a smaller version here.
function waitForPaint(win, utils, callback) {
win.document.documentElement.getBoundingClientRect();
if (!utils.isMozAfterPaintPending) {
callback();
return;
}
var onpaint = function() {
if (!utils.isMozAfterPaintPending) {
win.removeEventListener("MozAfterPaint", onpaint);
callback();
return;
}
if (utils.isTestControllingRefreshes) {
utils.advanceTimeAndRefresh(0);
}
}
win.addEventListener("MozAfterPaint", onpaint);
if (utils.isTestControllingRefreshes) {
utils.advanceTimeAndRefresh(0);
}
}
function forceScrollAndWait(scrollbox, callback) {
let win = scrollbox.ownerDocument.defaultView;
let utils = SpecialPowers.getDOMWindowUtils(win);
utils.advanceTimeAndRefresh(1000);
let postApzFlush = function() {
SpecialPowers.Services.obs.removeObserver(postApzFlush, "apz-repaints-flushed", false);
waitForPaint(win, utils, callback);
}
SpecialPowers.Services.obs.addObserver(postApzFlush, "apz-repaints-flushed", false);
if (!utils.flushApzRepaints()) {
postApzFlush();
}
}
function sendTouchpadScrollMotion(scrollbox, direction, ctrl, momentum, callback) {
var win = scrollbox.ownerDocument.defaultView;
let event = {
deltaMode: WheelEvent.DOM_DELTA_PIXEL,
deltaY: direction * 3,
lineOrPageDeltaY: direction,
ctrlKey: ctrl,
isMomentum: momentum
};
let kExtraEvents = 5;
var received = 0;
var onwheel = function() {
if (++received == 1 + kExtraEvents) {
// We have captured all the outstanding wheel events. Wait for the
// animation to add itself to the refresh driver.
scrollbox.removeEventListener("wheel", onwheel);
setTimeout(function() {
forceScrollAndWait(scrollbox, callback);
}, 0);
}
};
scrollbox.addEventListener("wheel", onwheel);
synthesizeWheel(scrollbox, 10, 10, event, win);
// then 5 additional pixel scrolls
event.lineOrPageDeltaY = 0;
for (let i = 1; i <= kExtraEvents; ++i) {
synthesizeWheel(scrollbox, 10, 10, event, win);
}
}
function runTest() {
var win = open('data:text/html,<!DOCTYPE html>\n' +
'<div id="scrollbox" style="height: 100px; overflow: auto;">' +
' <div style="height: 1000px;"></div>' +
'</div>', '_blank', 'width=300,height=300');
SimpleTest.waitForFocus(function () {
var scrollbox = win.document.getElementById("scrollbox");
let winUtils = SpecialPowers.getDOMWindowUtils(win);
let outstandingTests = [
[false, false],
[false, true],
[true, false],
[true, true],
];
// grab the refresh driver, since we want to make sure
// async scrolls happen in deterministic time
winUtils.advanceTimeAndRefresh(1000);
function nextTest() {
let [ctrlKey, isMomentum] = outstandingTests.shift();
let scrollTopBefore = scrollbox.scrollTop;
let zoomFactorBefore = winUtils.fullZoom;
let check = function() {
if (!ctrlKey) {
let postfix = isMomentum ? ", even after releasing the touchpad" : "";
// Normal scroll: scroll
is(winUtils.fullZoom, zoomFactorBefore, "Normal scrolling shouldn't change zoom" + postfix);
isnot(scrollbox.scrollTop, scrollTopBefore, "Normal scrolling should scroll" + postfix);
} else {
if (!isMomentum) {
isnot(winUtils.fullZoom, zoomFactorBefore, "Ctrl-scrolling should zoom while the user is touching the touchpad");
is(scrollbox.scrollTop, scrollTopBefore, "Ctrl-scrolling shouldn't scroll while the user is touching the touchpad");
} else {
is(winUtils.fullZoom, zoomFactorBefore, "Momentum scrolling shouldn't zoom, even when pressing Ctrl");
isnot(scrollbox.scrollTop, scrollTopBefore, "Momentum scrolling should scroll, even when pressing Ctrl");
}
}
if (!outstandingTests.length) {
winUtils.restoreNormalRefresh();
win.close();
SimpleTest.finish();
return;
}
// Revert the effect for the next test.
sendTouchpadScrollMotion(scrollbox, -1, ctrlKey, isMomentum, function() {
setTimeout(nextTest, 0);
});
}
sendTouchpadScrollMotion(scrollbox, 1, ctrlKey, isMomentum, check);
}
nextTest();
}, win);
}
window.onload = function() {
SpecialPowers.pushPrefEnv({
"set":[["general.smoothScroll", false],
["mousewheel.acceleration.start", -1],
["mousewheel.system_scroll_override_on_root_content.enabled", false],
["mousewheel.with_control.action", 3]]}, runTest);
}
SimpleTest.waitForExplicitFinish();
</script>
</pre>
</body>
</html>