1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
|
<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=574663
-->
<head>
<title>Test for Bug 574663</title>
<script src="/tests/SimpleTest/SimpleTest.js"></script>
<script 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">
/** 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) {
win.requestAnimationFrame(function() {
setTimeout(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);
}
}
// This is a magic number representing how many device pixels we are attempting to
// scroll or zoom. We use it for sending the wheel events, but we don't actually
// check that we have scrolled by that amount.
var kDelta = 3;
function sendTouchpadScrollMotion(scrollbox, direction, ctrl, momentum, callback) {
var win = scrollbox.ownerDocument.defaultView;
let winUtils = SpecialPowers.getDOMWindowUtils(win);
let event = {
deltaMode: WheelEvent.DOM_DELTA_PIXEL,
deltaY: direction * kDelta,
lineOrPageDeltaY: direction,
ctrlKey: ctrl,
isMomentum: momentum
};
// Construct a promise that will resolve when either scroll or zoom has changed.
// --- Intermittent Warning ---
// Two wheel events are sent, but our promise resolves when any change has been
// made to scroll or zoom. That makes it possible that the effect of the second
// event may not yet be applied when the promise resolves. This shouldn't lead
// to any errors, since the two wheel events are moving in the same direction,
// and our later checks will only ensure that the value has changed from its
// initial value. This was done intentionally, because attempting to wait after
// both events yields problems when the second event has no effect, which does
// happen in testing. It's not clear why this is happening. Since the testing
// pattern is scroll (twice), then scroll back (twice), it's possible that the
// first scroll back event is sufficient to return the scrollbox to its minimal
// scrollTop position, and so the second event doesn't scroll any further.
const initialZoom = winUtils.fullZoom;
const initialScroll = scrollbox.scrollTop;
const effectOfWheelEvent = SimpleTest.promiseWaitForCondition(() => {
return ((winUtils.fullZoom != initialZoom) || (scrollbox.scrollTop != initialScroll));
}, "Mouse wheel should have caused us to either zoom or scroll.");
synthesizeWheel(scrollbox, 10, 10, event, win);
// then additional pixel scroll
event.lineOrPageDeltaY = 0;
synthesizeWheel(scrollbox, 10, 10, event, win);
effectOfWheelEvent.then(callback);
}
function runTest() {
var win = open('bug574663.html', '_blank', 'width=300,height=300');
let winUtils = SpecialPowers.getDOMWindowUtils(win);
let waitUntilPainted = function(callback) {
// Until the first non-blank paint, the parent will set the opacity of our
// browser to 0 using the 'blank' attribute.
// Until the blank attribute is removed, we can't send scroll events.
SimpleTest.waitForFocus(function() {
/* eslint-disable no-shadow */
let chromeScript = SpecialPowers.loadChromeScript(_ => {
const {Services} = ChromeUtils.import("resource://gre/modules/Services.jsm");
let win = Services.wm.getMostRecentWindow("navigator:browser");
win.requestAnimationFrame(() => {
win.gBrowser.selectedBrowser.removeAttribute("blank");
win.requestAnimationFrame(() => {
sendAsyncMessage("blank-attribute-removed");
});
});
});
/* eslint-enable no-shadow */
chromeScript.promiseOneMessage("blank-attribute-removed").then(() => {
chromeScript.destroy();
waitForPaint(win, winUtils, callback);
});
}, win);
};
waitUntilPainted(function () {
var scrollbox = win.document.getElementById("scrollbox");
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();
});
}
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>
|
