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
194
195
196
197
198
199
200
201
202
203
|
<?xml version="1.0"?>
<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
<?xml-stylesheet href="chrome://mochikit/content/tests/SimpleTest/test.css" type="text/css"?>
<window xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
<script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
<script src="chrome://mochikit/content/tests/SimpleTest/EventUtils.js"></script>
<script src="chrome://mochikit/content/tests/SimpleTest/WindowSnapshot.js"></script>
<html:style xmlns:html="http://www.w3.org/1999/xhtml" type="text/css">
* { outline: none; }
#l1:-moz-focusring, #l3:-moz-focusring, #b1:-moz-focusring { outline: 2px solid red; }
#l2:focus, #b2:focus { outline: 2px solid red; }
</html:style>
<script>
<![CDATA[
SimpleTest.waitForExplicitFinish();
const kFocusVisibleEnabled = SpecialPowers.getBoolPref("layout.css.focus-visible.enabled");
function snapShot(element) {
var rect = element.getBoundingClientRect();
adjustedRect = { left: rect.left - 6, top: rect.top - 6,
width: rect.width + 12, height: rect.height + 12 }
return SpecialPowers.snapshotRect(window, adjustedRect, "transparent");
}
function initTest()
{
SpecialPowers.pushPrefEnv({"set": [['accessibility.tabfocus', 7]]}, runTest);
}
function runTest()
{
var isMac = (navigator.platform.includes("Mac"));
var isWinOrLinux = navigator.platform.includes("Win") || navigator.platform.includes("Linux");
function checkFocus(element, visible, testid)
{
var outline = getComputedStyle(element, "").outlineWidth;
is(outline, visible ? "2px" : "0px", testid);
}
// make sure that a focus ring appears on the focused button
if (navigator.platform.includes("Mac")) {
var focusedButton = $("b3");
ok(compareSnapshots(snapShot(focusedButton), snapShot($("b2")), true)[0], "unfocused shows no ring");
focusedButton.focus();
ok(compareSnapshots(snapShot(focusedButton), snapShot($("b2")), false)[0], "focus shows ring");
}
checkFocus($("l1"), false, "initial appearance");
// we can't really test the situation on Windows where a dialog doesn't show
// focus rings until a key is pressed, as the default state depends on what
// kind of real user input, mouse or key, was last entered. But we can handle
// the test regardless of which user input last occurred.
$("l1").focus();
var expectedVisible = (!isWinOrLinux || getComputedStyle($("l1"), "").outlineWidth == "2px");
testHTMLElements(htmlElements, isMac, isWinOrLinux && !expectedVisible);
$("l1").focus();
checkFocus($("l1"), expectedVisible, "appearance on list after focus() with :moz-focusring");
$("l2").focus();
checkFocus($("l2"), true, "appearance on list after focus() with :focus");
is(getComputedStyle($("l1"), "").outlineWidth, "0px", "appearance on previous list after focus() with :focus");
synthesizeMouse($("l1"), 4, 4, { });
checkFocus($("l1"), expectedVisible && !kFocusVisibleEnabled, "appearance on list after mouse focus with :moz-focusring");
synthesizeMouse($("l2"), 4, 4, { });
checkFocus($("l2"), true, "appearance on list after mouse focus with :focus");
synthesizeMouse($("b1"), 4, 4, { });
checkFocus($("b1"), !isMac && expectedVisible && !kFocusVisibleEnabled, "appearance on button after mouse focus with :moz-focusring");
if (navigator.platform.includes("Mac")) {
ok(compareSnapshots(snapShot($("b1")), snapShot($("b2")), false)[0], "focus after mouse shows no ring");
}
synthesizeMouse($("b2"), 4, 4, { });
checkFocus($("b2"), !isMac, "appearance on button after mouse focus with :focus");
// after a key is pressed, the focus ring will always be visible
$("l2").focus();
synthesizeKey("KEY_Tab");
checkFocus($("l3"), true, "appearance on list after tab focus");
if (isMac) {
SpecialPowers.pushPrefEnv({"set": [['accessibility.mouse_focuses_formcontrol', true]]}, testMacFocusesFormControl);
}
else {
SimpleTest.finish();
}
}
function testMacFocusesFormControl()
{
testHTMLElements(htmlElementsMacPrefSet, true, false);
SimpleTest.finish();
}
var htmlElements = [
"<button id='elem'>Button</button>",
"<input id='elem' class='canfocus'>",
"<input id='elem' type='password' class='canfocus'>",
"<input id='elem' type='button'>",
"<input id='elem' type='checkbox'>",
"<textarea id='elem' class='canfocus'></textarea>",
"<select id='elem' class='canfocus'><option>One</select>",
"<select id='elem' rows='5' class='canfocus'><option>One</select>",
"<div id='elem' tabindex='0' class='canfocus' style='width: 10px; height: 10px;'></div>",
"<a href='about:blank' class='canfocus' onclick='return false;'>about:blank</a>",
];
var htmlElementsMacPrefSet = [
"<button id='elem' class='canfocus'>Button</button>",
"<input id='elem' class='canfocus'>",
"<input id='elem' type='button' class='canfocus'>",
"<input id='elem' type='checkbox' class='canfocus'>",
];
function createElement(str) {
let doc = new DOMParser().parseFromSafeString(`<html><body>${str}</body></html>`, "text/html");
return doc.body.firstChild;
}
function testHTMLElements(list, isMac, expectedNoRingsOnWin)
{
var childwin = frames[0];
var childdoc = childwin.document;
var container = childdoc.getElementById("container");
for (var e = 0; e < list.length; e++) {
// Using innerHTML would be sanitized, so use the DOM parser instead to
// create the elements.
var elem = childdoc.adoptNode(createElement(list[e]));
container.appendChild(elem);
var shouldFocus = !isMac || (elem.className == "canfocus");
var ringSize = (shouldFocus ? (expectedNoRingsOnWin ? 2 : 1) : 0) + "px";
var expectedMatchWithMouse = shouldFocus && !expectedNoRingsOnWin;
var mouseRingSize = ringSize;
if (shouldFocus && kFocusVisibleEnabled) {
var textControl = (function() {
if (elem.localName == "textarea")
return true;
if (elem.localName == "input")
return elem.type == "text" || elem.type == "password";
return false;
}());
expectedMatchWithMouse = textControl;
mouseRingSize = textControl ? "1px" : "2px";
}
if (elem.localName == "a") {
mouseRingSize = ringSize = "0px";
expectedMatchWithMouse = expectedMatchWithMouse && !isMac;
}
synthesizeMouse(elem, 8, 8, { }, childwin);
is(childdoc.activeElement, shouldFocus ? elem : childdoc.body, "mouse click on " + list[e]);
is(childwin.getComputedStyle(elem).outlineWidth, mouseRingSize, "mouse click on " + list[e] + " ring");
is(elem.matches(":-moz-focusring"), expectedMatchWithMouse, "mouse click on " + list[e] + " selector");
if (childdoc.activeElement)
childdoc.activeElement.blur();
ringSize = (elem.localName == "a" ? "0" : (expectedNoRingsOnWin ? 2 : 1)) + "px";
elem.focus();
is(childdoc.activeElement, elem, "focus() on " + list[e]);
is(childwin.getComputedStyle(elem).outlineWidth, ringSize,
"focus() on " + list[e] + " ring");
childdoc.activeElement.blur();
// Clear out the container for the next test.
while (container.firstChild) {
container.firstChild.remove();
}
}
}
SimpleTest.waitForFocus(runTest);
]]>
</script>
<richlistbox id="l1" class="plain" height="20"/>
<richlistbox id="l2" class="plain" height="20"/>
<richlistbox id="l3" class="plain" height="20"/>
<button id="b1" label="Button"/>
<button id="b2" label="Button"/>
<button id="b3" label="Button"/>
<iframe id="child" src="file_focusrings.html"/>
<body xmlns="http://www.w3.org/1999/xhtml" style="height: 300px; overflow: auto;"/>
</window>
|
