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

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<!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 **/
// This test depends on general.smoothScroll being off.
function sendTouchpadScrollMotion(scrollbox, direction, ctrl, momentum) {
var win = scrollbox.ownerDocument.defaultView;
let event = {
'type': "DOMMouseScroll",
'axis': "vertical",
'delta': direction,
'hasPixels': true,
'ctrlKey': ctrl,
'isMomentum': momentum,
};
// first a line scroll
synthesizeMouseScroll(scrollbox, 10, 10, event, win);
// Then a line scroll with hasPixels set to false
event.hasPixels = false;
synthesizeMouseScroll(scrollbox, 10, 10, event, win);
// then 5 pixel scrolls
event.hasPixels = true;
event.delta *= 3;
event.type = "MozMousePixelScroll";
event.hasPixels = false;
for (let i = 0; i < 5; ++i) {
synthesizeMouseScroll(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");
netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
let winUtils = win.QueryInterface(Components.interfaces.nsIInterfaceRequestor)
.getInterface(Components.interfaces.nsIDOMWindowUtils);
let outstandingTests = [
[false, false],
[false, true],
[true, false],
[true, true],
];
function nextTest() {
netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
if (!outstandingTests.length) {
win.close();
clearPrefs();
SimpleTest.finish();
return;
}
let [ctrlKey, isMomentum] = outstandingTests.shift();
let scrollTopBefore = scrollbox.scrollTop;
let zoomFactorBefore = winUtils.screenPixelsPerCSSPixel;
sendTouchpadScrollMotion(scrollbox, 1, ctrlKey, isMomentum);
setTimeout(function () {
netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
if (!ctrlKey) {
let postfix = isMomentum ? ", even after releasing the touchpad" : "";
// Normal scroll: scroll
is(winUtils.screenPixelsPerCSSPixel, zoomFactorBefore, "Normal scrolling shouldn't change zoom" + postfix);
isnot(scrollbox.scrollTop, scrollTopBefore, "Normal scrolling should scroll" + postfix);
} else {
if (!isMomentum) {
isnot(winUtils.screenPixelsPerCSSPixel, 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.screenPixelsPerCSSPixel, zoomFactorBefore, "Momentum scrolling shouldn't zoom, even when pressing Ctrl");
isnot(scrollbox.scrollTop, scrollTopBefore, "Momentum scrolling should scroll, even when pressing Ctrl");
}
}
// Revert the effect.
sendTouchpadScrollMotion(scrollbox, -1, ctrlKey, isMomentum);
setTimeout(nextTest, 0);
}, 0);
}
nextTest();
}, win);
}
function initPrefs()
{
netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
var prefSvc = Components.classes["@mozilla.org/preferences-service;1"].
getService(Components.interfaces.nsIPrefBranch2);
// Disables the app level scroll acceleration
prefSvc.setIntPref("mousewheel.acceleration.start", -1);
prefSvc.setBoolPref("mousewheel.system_scroll_override_on_root_content.enabled", false);
// Enable zooming for ctrl-scrolling
prefSvc.setIntPref("mousewheel.withcontrolkey.action", 3);
}
function clearPrefs()
{
netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
var prefSvc = Components.classes["@mozilla.org/preferences-service;1"].
getService(Components.interfaces.nsIPrefBranch2);
if (prefSvc.prefHasUserValue("mousewheel.acceleration.start"))
prefSvc.clearUserPref("mousewheel.acceleration.start");
if (prefSvc.prefHasUserValue("mousewheel.system_scroll_override_on_root_content.enabled"))
prefSvc.clearUserPref("mousewheel.system_scroll_override_on_root_content.enabled");
if (prefSvc.prefHasUserValue("mousewheel.withcontrolkey.action"))
prefSvc.clearUserPref("mousewheel.withcontrolkey.action");
}
window.onload = function () {
initPrefs();
SimpleTest.executeSoon(runTest);
}
SimpleTest.waitForExplicitFinish();
</script>
</pre>
</body>
</html>