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<!DOCTYPE HTML>
< html >
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=607464
-->
< head >
< title > Test for Bug 607464< / 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=607464" > Mozilla Bug 607464< / 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 607464:
* Pixel scrolling shouldn't scroll smoothly, even if general.smoothScroll is on.
**/
function scrollDown15PxWithPixelScrolling(scrollbox) {
var win = scrollbox.ownerDocument.defaultView;
let event = {
'type': "DOMMouseScroll",
'axis': "vertical",
'delta': 1,
'hasPixels': true,
};
// first a line scroll
synthesizeMouseScroll(scrollbox, 10, 10, event, win);
// then 5 pixel scrolls with 3px each
event.delta *= 3;
event.type = "MozMousePixelScroll";
event.hasPixels = false;
for (let i = 0; i < 5 ; + + i ) {
synthesizeMouseScroll(scrollbox, 10, 10, event, win);
}
// Note: the line scroll shouldn't have any effect because it has
// hasPixels = true set on it. We send it to emulate normal
// behavior.
}
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 scrollTopBefore = scrollbox.scrollTop;
scrollDown15PxWithPixelScrolling(scrollbox);
setTimeout(function checkThatScrollIsFinishedAlmostInstantly() {
is(scrollbox.scrollTop, scrollTopBefore + 15, "Pixel scrolling should have finished after waiting for one 0-interval timer. We shouldn't be scrolling smoothly, even though the pref is set.")
win.close();
clearPrefs();
SimpleTest.finish();
}, 0);
}, win);
}
function initPrefs()
{
netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
var prefSvc = Components.classes["@mozilla.org/preferences-service;1"].
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getService(Components.interfaces.nsIPrefBranch);
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// Disables the app level scroll acceleration
prefSvc.setIntPref("mousewheel.acceleration.start", -1);
prefSvc.setBoolPref("mousewheel.system_scroll_override_on_root_content.enabled", false);
// Enables smooth scrolling
prefSvc.setBoolPref("general.smoothScroll", true);
}
function clearPrefs()
{
netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
var prefSvc = Components.classes["@mozilla.org/preferences-service;1"].
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getService(Components.interfaces.nsIPrefBranch);
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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("general.smoothScroll"))
prefSvc.clearUserPref("general.smoothScroll");
}
window.onload = function () {
initPrefs();
SimpleTest.executeSoon(runTest);
}
SimpleTest.waitForExplicitFinish();
< / script >
< / pre >
< / body >
< / html >
