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
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
|
/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
var Cc = Components.classes;
var Ci = Components.interfaces;
var Cu = Components.utils;
var Cr = Components.results;
Cu.import("resource://gre/modules/Services.jsm");
Cu.import("resource://gre/modules/XPCOMUtils.jsm");
XPCOMUtils.defineLazyModuleGetter(this, "ReaderMode",
"resource://gre/modules/ReaderMode.jsm");
XPCOMUtils.defineLazyModuleGetter(this, "BrowserUtils",
"resource://gre/modules/BrowserUtils.jsm");
var global = this;
// Lazily load the finder code
addMessageListener("Finder:Initialize", function () {
let {RemoteFinderListener} = Cu.import("resource://gre/modules/RemoteFinder.jsm", {});
new RemoteFinderListener(global);
});
var ClickEventHandler = {
init: function init() {
this._scrollable = null;
this._scrolldir = "";
this._startX = null;
this._startY = null;
this._screenX = null;
this._screenY = null;
this._lastFrame = null;
this.autoscrollLoop = this.autoscrollLoop.bind(this);
Services.els.addSystemEventListener(global, "mousedown", this, true);
addMessageListener("Autoscroll:Stop", this);
},
isAutoscrollBlocker: function(node) {
let mmPaste = Services.prefs.getBoolPref("middlemouse.paste");
let mmScrollbarPosition = Services.prefs.getBoolPref("middlemouse.scrollbarPosition");
while (node) {
if ((node instanceof content.HTMLAnchorElement || node instanceof content.HTMLAreaElement) &&
node.hasAttribute("href")) {
return true;
}
if (mmPaste && (node instanceof content.HTMLInputElement ||
node instanceof content.HTMLTextAreaElement)) {
return true;
}
if (node instanceof content.XULElement && mmScrollbarPosition
&& (node.localName == "scrollbar" || node.localName == "scrollcorner")) {
return true;
}
node = node.parentNode;
}
return false;
},
findNearestScrollableElement: function(aNode) {
// this is a list of overflow property values that allow scrolling
const scrollingAllowed = ['scroll', 'auto'];
// go upward in the DOM and find any parent element that has a overflow
// area and can therefore be scrolled
for (this._scrollable = aNode; this._scrollable;
this._scrollable = this._scrollable.parentNode) {
// do not use overflow based autoscroll for <html> and <body>
// Elements or non-html elements such as svg or Document nodes
// also make sure to skip select elements that are not multiline
if (!(this._scrollable instanceof content.HTMLElement) ||
((this._scrollable instanceof content.HTMLSelectElement) && !this._scrollable.multiple)) {
continue;
}
var overflowx = this._scrollable.ownerDocument.defaultView
.getComputedStyle(this._scrollable, '')
.getPropertyValue('overflow-x');
var overflowy = this._scrollable.ownerDocument.defaultView
.getComputedStyle(this._scrollable, '')
.getPropertyValue('overflow-y');
// we already discarded non-multiline selects so allow vertical
// scroll for multiline ones directly without checking for a
// overflow property
var scrollVert = this._scrollable.scrollTopMax &&
(this._scrollable instanceof content.HTMLSelectElement ||
scrollingAllowed.indexOf(overflowy) >= 0);
// do not allow horizontal scrolling for select elements, it leads
// to visual artifacts and is not the expected behavior anyway
if (!(this._scrollable instanceof content.HTMLSelectElement) &&
this._scrollable.scrollLeftMin != this._scrollable.scrollLeftMax &&
scrollingAllowed.indexOf(overflowx) >= 0) {
this._scrolldir = scrollVert ? "NSEW" : "EW";
break;
} else if (scrollVert) {
this._scrolldir = "NS";
break;
}
}
if (!this._scrollable) {
this._scrollable = aNode.ownerDocument.defaultView;
if (this._scrollable.scrollMaxX != this._scrollable.scrollMinX) {
this._scrolldir = this._scrollable.scrollMaxY !=
this._scrollable.scrollMinY ? "NSEW" : "EW";
} else if (this._scrollable.scrollMaxY != this._scrollable.scrollMinY) {
this._scrolldir = "NS";
} else if (this._scrollable.frameElement) {
this.findNearestScrollableElement(this._scrollable.frameElement);
} else {
this._scrollable = null; // abort scrolling
}
}
},
startScroll: function(event) {
this.findNearestScrollableElement(event.originalTarget);
if (!this._scrollable)
return;
let [enabled] = sendSyncMessage("Autoscroll:Start",
{scrolldir: this._scrolldir,
screenX: event.screenX,
screenY: event.screenY});
if (!enabled) {
this._scrollable = null;
return;
}
Services.els.addSystemEventListener(global, "mousemove", this, true);
addEventListener("pagehide", this, true);
this._ignoreMouseEvents = true;
this._startX = event.screenX;
this._startY = event.screenY;
this._screenX = event.screenX;
this._screenY = event.screenY;
this._scrollErrorX = 0;
this._scrollErrorY = 0;
this._lastFrame = content.performance.now();
content.requestAnimationFrame(this.autoscrollLoop);
},
stopScroll: function() {
if (this._scrollable) {
this._scrollable.mozScrollSnap();
this._scrollable = null;
Services.els.removeSystemEventListener(global, "mousemove", this, true);
removeEventListener("pagehide", this, true);
}
},
accelerate: function(curr, start) {
const speed = 12;
var val = (curr - start) / speed;
if (val > 1)
return val * Math.sqrt(val) - 1;
if (val < -1)
return val * Math.sqrt(-val) + 1;
return 0;
},
roundToZero: function(num) {
if (num > 0)
return Math.floor(num);
return Math.ceil(num);
},
autoscrollLoop: function(timestamp) {
if (!this._scrollable) {
// Scrolling has been canceled
return;
}
// avoid long jumps when the browser hangs for more than
// |maxTimeDelta| ms
const maxTimeDelta = 100;
var timeDelta = Math.min(maxTimeDelta, timestamp - this._lastFrame);
// we used to scroll |accelerate()| pixels every 20ms (50fps)
var timeCompensation = timeDelta / 20;
this._lastFrame = timestamp;
var actualScrollX = 0;
var actualScrollY = 0;
// don't bother scrolling vertically when the scrolldir is only horizontal
// and the other way around
if (this._scrolldir != 'EW') {
var y = this.accelerate(this._screenY, this._startY) * timeCompensation;
var desiredScrollY = this._scrollErrorY + y;
actualScrollY = this.roundToZero(desiredScrollY);
this._scrollErrorY = (desiredScrollY - actualScrollY);
}
if (this._scrolldir != 'NS') {
var x = this.accelerate(this._screenX, this._startX) * timeCompensation;
var desiredScrollX = this._scrollErrorX + x;
actualScrollX = this.roundToZero(desiredScrollX);
this._scrollErrorX = (desiredScrollX - actualScrollX);
}
const kAutoscroll = 15; // defined in mozilla/layers/ScrollInputMethods.h
this._scrollable.scrollBy({
left: actualScrollX,
top: actualScrollY,
behavior: "instant"
});
content.requestAnimationFrame(this.autoscrollLoop);
},
handleEvent: function(event) {
if (event.type == "mousemove") {
this._screenX = event.screenX;
this._screenY = event.screenY;
} else if (event.type == "mousedown") {
if (event.isTrusted &
!event.defaultPrevented &&
event.button == 1 &&
!this._scrollable &&
!this.isAutoscrollBlocker(event.originalTarget)) {
this.startScroll(event);
}
} else if (event.type == "pagehide") {
if (this._scrollable) {
var doc =
this._scrollable.ownerDocument || this._scrollable.document;
if (doc == event.target) {
sendAsyncMessage("Autoscroll:Cancel");
}
}
}
},
receiveMessage: function(msg) {
switch (msg.name) {
case "Autoscroll:Stop": {
this.stopScroll();
break;
}
}
},
};
ClickEventHandler.init();
var PopupBlocking = {
popupData: null,
popupDataInternal: null,
init: function() {
addEventListener("DOMPopupBlocked", this, true);
addEventListener("pageshow", this, true);
addEventListener("pagehide", this, true);
addMessageListener("PopupBlocking:UnblockPopup", this);
addMessageListener("PopupBlocking:GetBlockedPopupList", this);
},
receiveMessage: function(msg) {
switch (msg.name) {
case "PopupBlocking:UnblockPopup": {
let i = msg.data.index;
if (this.popupData && this.popupData[i]) {
let data = this.popupData[i];
let internals = this.popupDataInternal[i];
let dwi = internals.requestingWindow;
// If we have a requesting window and the requesting document is
// still the current document, open the popup.
if (dwi && dwi.document == internals.requestingDocument) {
dwi.open(data.popupWindowURIspec, data.popupWindowName, data.popupWindowFeatures);
}
}
break;
}
case "PopupBlocking:GetBlockedPopupList": {
let popupData = [];
let length = this.popupData ? this.popupData.length : 0;
// Limit 15 popup URLs to be reported through the UI
length = Math.min(length, 15);
for (let i = 0; i < length; i++) {
let popupWindowURIspec = this.popupData[i].popupWindowURIspec;
if (popupWindowURIspec == global.content.location.href) {
popupWindowURIspec = "<self>";
} else {
// Limit 500 chars to be sent because the URI will be cropped
// by the UI anyway, and data: URIs can be significantly larger.
popupWindowURIspec = popupWindowURIspec.substring(0, 500)
}
popupData.push({popupWindowURIspec});
}
sendAsyncMessage("PopupBlocking:ReplyGetBlockedPopupList", {popupData});
break;
}
}
},
handleEvent: function(ev) {
switch (ev.type) {
case "DOMPopupBlocked":
return this.onPopupBlocked(ev);
case "pageshow":
return this.onPageShow(ev);
case "pagehide":
return this.onPageHide(ev);
}
return undefined;
},
onPopupBlocked: function(ev) {
if (!this.popupData) {
this.popupData = new Array();
this.popupDataInternal = new Array();
}
let obj = {
popupWindowURIspec: ev.popupWindowURI ? ev.popupWindowURI.spec : "about:blank",
popupWindowFeatures: ev.popupWindowFeatures,
popupWindowName: ev.popupWindowName
};
let internals = {
requestingWindow: ev.requestingWindow,
requestingDocument: ev.requestingWindow.document,
};
this.popupData.push(obj);
this.popupDataInternal.push(internals);
this.updateBlockedPopups(true);
},
onPageShow: function(ev) {
if (this.popupData) {
let i = 0;
while (i < this.popupData.length) {
// Filter out irrelevant reports.
if (this.popupDataInternal[i].requestingWindow &&
(this.popupDataInternal[i].requestingWindow.document ==
this.popupDataInternal[i].requestingDocument)) {
i++;
} else {
this.popupData.splice(i, 1);
this.popupDataInternal.splice(i, 1);
}
}
if (this.popupData.length == 0) {
this.popupData = null;
this.popupDataInternal = null;
}
this.updateBlockedPopups(false);
}
},
onPageHide: function(ev) {
if (this.popupData) {
this.popupData = null;
this.popupDataInternal = null;
this.updateBlockedPopups(false);
}
},
updateBlockedPopups: function(freshPopup) {
sendAsyncMessage("PopupBlocking:UpdateBlockedPopups",
{
count: this.popupData ? this.popupData.length : 0,
freshPopup
});
},
};
PopupBlocking.init();
XPCOMUtils.defineLazyGetter(this, "console", () => {
// Set up console.* for frame scripts.
let Console = Components.utils.import("resource://gre/modules/Console.jsm", {});
return new Console.ConsoleAPI();
});
var Printing = {
// Bug 1088061: nsPrintEngine's DoCommonPrint currently expects the
// progress listener passed to it to QI to an nsIPrintingPromptService
// in order to know that a printing progress dialog has been shown. That's
// really all the interface is used for, hence the fact that I don't actually
// implement the interface here. Bug 1088061 has been filed to remove
// this hackery.
QueryInterface: XPCOMUtils.generateQI([Ci.nsIWebProgressListener,
Ci.nsIPrintingPromptService]),
MESSAGES: [
"Printing:Preview:Enter",
"Printing:Preview:Exit",
"Printing:Preview:Navigate",
"Printing:Preview:ParseDocument",
"Printing:Preview:UpdatePageCount",
"Printing:Print",
],
init() {
this.MESSAGES.forEach(msgName => addMessageListener(msgName, this));
addEventListener("PrintingError", this, true);
},
get shouldSavePrintSettings() {
return Services.prefs.getBoolPref("print.use_global_printsettings", false) &&
Services.prefs.getBoolPref("print.save_print_settings", false);
},
handleEvent(event) {
if (event.type == "PrintingError") {
let win = event.target.defaultView;
let wbp = win.QueryInterface(Ci.nsIInterfaceRequestor)
.getInterface(Ci.nsIWebBrowserPrint);
let nsresult = event.detail;
sendAsyncMessage("Printing:Error", {
isPrinting: wbp.doingPrint,
nsresult: nsresult,
});
}
},
receiveMessage(message) {
let objects = message.objects;
let data = message.data;
switch (message.name) {
case "Printing:Preview:Enter": {
this.enterPrintPreview(Services.wm.getOuterWindowWithId(data.windowID), data.simplifiedMode);
break;
}
case "Printing:Preview:Exit": {
this.exitPrintPreview();
break;
}
case "Printing:Preview:Navigate": {
this.navigate(data.navType, data.pageNum);
break;
}
case "Printing:Preview:ParseDocument": {
this.parseDocument(data.URL, Services.wm.getOuterWindowWithId(data.windowID));
break;
}
case "Printing:Preview:UpdatePageCount": {
this.updatePageCount();
break;
}
case "Printing:Print": {
this.print(Services.wm.getOuterWindowWithId(data.windowID), data.simplifiedMode);
break;
}
}
},
getPrintSettings() {
try {
let PSSVC = Cc["@mozilla.org/gfx/printsettings-service;1"]
.getService(Ci.nsIPrintSettingsService);
let printSettings = PSSVC.globalPrintSettings;
if (!printSettings.printerName) {
printSettings.printerName = PSSVC.defaultPrinterName;
}
// First get any defaults from the printer
try {
PSSVC.initPrintSettingsFromPrinter(printSettings.printerName,
printSettings);
} catch(e) {
// The printer name specified was invalid or there was an O.S. error.
Components.utils.reportError("Invalid printer: " + printSettings.printerName);
Services.prefs.clearUserPref("print.print_printer");
// Try again with default
printSettings.printerName = PSSVC.defaultPrinterName;
PSSVC.initPrintSettingsFromPrinter(printSettings.printerName,
printSettings);
}
// now augment them with any values from last time
PSSVC.initPrintSettingsFromPrefs(printSettings, true,
printSettings.kInitSaveAll);
return printSettings;
} catch (e) {
Components.utils.reportError(e);
}
return null;
},
parseDocument(URL, contentWindow) {
// By using ReaderMode primitives, we parse given document and place the
// resulting JS object into the DOM of current browser.
let articlePromise = ReaderMode.parseDocument(contentWindow.document).catch(Cu.reportError);
articlePromise.then(function (article) {
// We make use of a web progress listener in order to know when the content we inject
// into the DOM has finished rendering. If our layout engine is still painting, we
// will wait for MozAfterPaint event to be fired.
let webProgressListener = {
onStateChange: function (webProgress, req, flags, status) {
if (flags & Ci.nsIWebProgressListener.STATE_STOP) {
webProgress.removeProgressListener(webProgressListener);
let domUtils = content.QueryInterface(Ci.nsIInterfaceRequestor)
.getInterface(Ci.nsIDOMWindowUtils);
// Here we tell the parent that we have parsed the document successfully
// using ReaderMode primitives and we are able to enter on preview mode.
if (domUtils.isMozAfterPaintPending) {
addEventListener("MozAfterPaint", function onPaint() {
removeEventListener("MozAfterPaint", onPaint);
sendAsyncMessage("Printing:Preview:ReaderModeReady");
});
} else {
sendAsyncMessage("Printing:Preview:ReaderModeReady");
}
}
},
QueryInterface: XPCOMUtils.generateQI([
Ci.nsIWebProgressListener,
Ci.nsISupportsWeakReference,
Ci.nsIObserver,
]),
};
// Here we QI the docShell into a nsIWebProgress passing our web progress listener in.
let webProgress = docShell.QueryInterface(Ci.nsIInterfaceRequestor)
.getInterface(Ci.nsIWebProgress);
webProgress.addProgressListener(webProgressListener, Ci.nsIWebProgress.NOTIFY_STATE_REQUEST);
content.document.head.innerHTML = "";
// Set title of document
content.document.title = article.title;
// Set base URI of document. Print preview code will read this value to
// populate the URL field in print settings so that it doesn't show
// "about:blank" as its URI.
let headBaseElement = content.document.createElement("base");
headBaseElement.setAttribute("href", URL);
content.document.head.appendChild(headBaseElement);
// Create link element referencing aboutReader.css and append it to head
let headStyleElement = content.document.createElement("link");
headStyleElement.setAttribute("rel", "stylesheet");
headStyleElement.setAttribute("href", "chrome://global/skin/aboutReader.css");
headStyleElement.setAttribute("type", "text/css");
content.document.head.appendChild(headStyleElement);
content.document.body.innerHTML = "";
// Create container div (main element) and append it to body
let containerElement = content.document.createElement("div");
containerElement.setAttribute("id", "container");
content.document.body.appendChild(containerElement);
// Create header div and append it to container
let headerElement = content.document.createElement("div");
headerElement.setAttribute("id", "reader-header");
headerElement.setAttribute("class", "header");
containerElement.appendChild(headerElement);
// Create style element for header div and import simplifyMode.css
let controlHeaderStyle = content.document.createElement("style");
controlHeaderStyle.setAttribute("scoped", "");
controlHeaderStyle.textContent = "@import url(\"chrome://global/content/simplifyMode.css\");";
headerElement.appendChild(controlHeaderStyle);
// Jam the article's title and byline into header div
let titleElement = content.document.createElement("h1");
titleElement.setAttribute("id", "reader-title");
titleElement.textContent = article.title;
headerElement.appendChild(titleElement);
let bylineElement = content.document.createElement("div");
bylineElement.setAttribute("id", "reader-credits");
bylineElement.setAttribute("class", "credits");
bylineElement.textContent = article.byline;
headerElement.appendChild(bylineElement);
// Display header element
headerElement.style.display = "block";
// Create content div and append it to container
let contentElement = content.document.createElement("div");
contentElement.setAttribute("class", "content");
containerElement.appendChild(contentElement);
// Jam the article's content into content div
let readerContent = content.document.createElement("div");
readerContent.setAttribute("id", "moz-reader-content");
contentElement.appendChild(readerContent);
let articleUri = Services.io.newURI(article.url, null, null);
let parserUtils = Cc["@mozilla.org/parserutils;1"].getService(Ci.nsIParserUtils);
let contentFragment = parserUtils.parseFragment(article.content,
Ci.nsIParserUtils.SanitizerDropForms | Ci.nsIParserUtils.SanitizerAllowStyle,
false, articleUri, readerContent);
readerContent.appendChild(contentFragment);
// Display reader content element
readerContent.style.display = "block";
});
},
enterPrintPreview(contentWindow, simplifiedMode) {
// We'll call this whenever we've finished reflowing the document, or if
// we errored out while attempting to print preview (in which case, we'll
// notify the parent that we've failed).
let notifyEntered = (error) => {
removeEventListener("printPreviewUpdate", onPrintPreviewReady);
sendAsyncMessage("Printing:Preview:Entered", {
failed: !!error,
});
};
let onPrintPreviewReady = () => {
notifyEntered();
};
// We have to wait for the print engine to finish reflowing all of the
// documents and subdocuments before we can tell the parent to flip to
// the print preview UI - otherwise, the print preview UI might ask for
// information (like the number of pages in the document) before we have
// our PresShells set up.
addEventListener("printPreviewUpdate", onPrintPreviewReady);
try {
let printSettings = this.getPrintSettings();
// If we happen to be on simplified mode, we need to set docURL in order
// to generate header/footer content correctly, since simplified tab has
// "about:blank" as its URI.
if (printSettings && simplifiedMode)
printSettings.docURL = contentWindow.document.baseURI;
docShell.printPreview.printPreview(printSettings, contentWindow, this);
} catch (error) {
// This might fail if we, for example, attempt to print a XUL document.
// In that case, we inform the parent to bail out of print preview.
Components.utils.reportError(error);
notifyEntered(error);
}
},
exitPrintPreview() {
docShell.printPreview.exitPrintPreview();
},
print(contentWindow, simplifiedMode) {
let printSettings = this.getPrintSettings();
let rv = Cr.NS_OK;
// If we happen to be on simplified mode, we need to set docURL in order
// to generate header/footer content correctly, since simplified tab has
// "about:blank" as its URI.
if (printSettings && simplifiedMode) {
printSettings.docURL = contentWindow.document.baseURI;
}
try {
let print = contentWindow.QueryInterface(Ci.nsIInterfaceRequestor)
.getInterface(Ci.nsIWebBrowserPrint);
print.print(printSettings, null);
} catch (e) {
// Pressing cancel is expressed as an NS_ERROR_ABORT return value,
// causing an exception to be thrown which we catch here.
if (e.result != Cr.NS_ERROR_ABORT) {
Cu.reportError(`In Printing:Print:Done handler, got unexpected rv
${e.result}.`);
sendAsyncMessage("Printing:Error", {
isPrinting: true,
nsresult: e.result,
});
}
}
if (this.shouldSavePrintSettings) {
let PSSVC = Cc["@mozilla.org/gfx/printsettings-service;1"]
.getService(Ci.nsIPrintSettingsService);
PSSVC.savePrintSettingsToPrefs(printSettings, true,
printSettings.kInitSaveAll);
PSSVC.savePrintSettingsToPrefs(printSettings, false,
printSettings.kInitSavePrinterName);
}
},
updatePageCount() {
let numPages = docShell.printPreview.printPreviewNumPages;
sendAsyncMessage("Printing:Preview:UpdatePageCount", {
numPages: numPages,
});
},
navigate(navType, pageNum) {
docShell.printPreview.printPreviewNavigate(navType, pageNum);
},
/* nsIWebProgressListener for print preview */
onStateChange(aWebProgress, aRequest, aStateFlags, aStatus) {
sendAsyncMessage("Printing:Preview:StateChange", {
stateFlags: aStateFlags,
status: aStatus,
});
},
onProgressChange(aWebProgress, aRequest, aCurSelfProgress,
aMaxSelfProgress, aCurTotalProgress,
aMaxTotalProgress) {
sendAsyncMessage("Printing:Preview:ProgressChange", {
curSelfProgress: aCurSelfProgress,
maxSelfProgress: aMaxSelfProgress,
curTotalProgress: aCurTotalProgress,
maxTotalProgress: aMaxTotalProgress,
});
},
onLocationChange(aWebProgress, aRequest, aLocation, aFlags) {},
onStatusChange(aWebProgress, aRequest, aStatus, aMessage) {},
onSecurityChange(aWebProgress, aRequest, aState) {},
}
Printing.init();
function SwitchDocumentDirection(aWindow) {
// document.dir can also be "auto", in which case it won't change
if (aWindow.document.dir == "ltr" || aWindow.document.dir == "") {
aWindow.document.dir = "rtl";
} else if (aWindow.document.dir == "rtl") {
aWindow.document.dir = "ltr";
}
for (let run = 0; run < aWindow.frames.length; run++) {
SwitchDocumentDirection(aWindow.frames[run]);
}
}
addMessageListener("SwitchDocumentDirection", () => {
SwitchDocumentDirection(content.window);
});
var FindBar = {
/* Please keep in sync with toolkit/content/widgets/findbar.xml */
FIND_NORMAL: 0,
FIND_TYPEAHEAD: 1,
FIND_LINKS: 2,
_findMode: 0,
init() {
addMessageListener("Findbar:UpdateState", this);
Services.els.addSystemEventListener(global, "keypress", this, false);
Services.els.addSystemEventListener(global, "mouseup", this, false);
},
receiveMessage(msg) {
switch (msg.name) {
case "Findbar:UpdateState":
this._findMode = msg.data.findMode;
break;
}
},
handleEvent(event) {
switch (event.type) {
case "keypress":
this._onKeypress(event);
break;
case "mouseup":
this._onMouseup(event);
break;
}
},
/**
* Returns whether FAYT can be used for the given event in
* the current content state.
*/
_canAndShouldFastFind() {
let should = false;
let can = BrowserUtils.canFastFind(content);
if (can) {
// XXXgijs: why all these shenanigans? Why not use the event's target?
let focusedWindow = {};
let elt = Services.focus.getFocusedElementForWindow(content, true, focusedWindow);
let win = focusedWindow.value;
should = BrowserUtils.shouldFastFind(elt, win);
}
return { can, should }
},
_onKeypress(event) {
// Useless keys:
if (event.ctrlKey || event.altKey || event.metaKey || event.defaultPrevented) {
return undefined;
}
// Check the focused element etc.
let fastFind = this._canAndShouldFastFind();
// Can we even use find in this page at all?
if (!fastFind.can) {
return undefined;
}
let fakeEvent = {};
for (let k in event) {
if (typeof event[k] != "object" && typeof event[k] != "function" &&
!(k in content.KeyboardEvent)) {
fakeEvent[k] = event[k];
}
}
// sendSyncMessage returns an array of the responses from all listeners
let rv = sendSyncMessage("Findbar:Keypress", {
fakeEvent: fakeEvent,
shouldFastFind: fastFind.should
});
if (rv.indexOf(false) !== -1) {
event.preventDefault();
return false;
}
return undefined;
},
_onMouseup(event) {
if (this._findMode != this.FIND_NORMAL)
sendAsyncMessage("Findbar:Mouseup");
},
};
FindBar.init();
let WebChannelMessageToChromeListener = {
// Preference containing the list (space separated) of origins that are
// allowed to send non-string values through a WebChannel, mainly for
// backwards compatability. See bug 1238128 for more information.
URL_WHITELIST_PREF: "webchannel.allowObject.urlWhitelist",
// Cached list of whitelisted principals, we avoid constructing this if the
// value in `_lastWhitelistValue` hasn't changed since we constructed it last.
_cachedWhitelist: [],
_lastWhitelistValue: "",
init() {
addEventListener("WebChannelMessageToChrome", e => {
this._onMessageToChrome(e);
}, true, true);
},
_getWhitelistedPrincipals() {
let whitelist = Services.prefs.getCharPref(this.URL_WHITELIST_PREF);
if (whitelist != this._lastWhitelistValue) {
let urls = whitelist.split(/\s+/);
this._cachedWhitelist = urls.map(origin =>
Services.scriptSecurityManager.createCodebasePrincipalFromOrigin(origin));
}
return this._cachedWhitelist;
},
_onMessageToChrome(e) {
// If target is window then we want the document principal, otherwise fallback to target itself.
let principal = e.target.nodePrincipal ? e.target.nodePrincipal : e.target.document.nodePrincipal;
if (e.detail) {
if (typeof e.detail != 'string') {
// Check if the principal is one of the ones that's allowed to send
// non-string values for e.detail.
let objectsAllowed = this._getWhitelistedPrincipals().some(whitelisted =>
principal.originNoSuffix == whitelisted.originNoSuffix);
if (!objectsAllowed) {
Cu.reportError("WebChannelMessageToChrome sent with an object from a non-whitelisted principal");
return;
}
}
sendAsyncMessage("WebChannelMessageToChrome", e.detail, { eventTarget: e.target }, principal);
} else {
Cu.reportError("WebChannel message failed. No message detail.");
}
}
};
WebChannelMessageToChromeListener.init();
// This should be kept in sync with /browser/base/content.js.
// Add message listener for "WebChannelMessageToContent" messages from chrome scripts.
addMessageListener("WebChannelMessageToContent", function (e) {
if (e.data) {
// e.objects.eventTarget will be defined if sending a response to
// a WebChannelMessageToChrome event. An unsolicited send
// may not have an eventTarget defined, in this case send to the
// main content window.
let eventTarget = e.objects.eventTarget || content;
// Use nodePrincipal if available, otherwise fallback to document principal.
let targetPrincipal = eventTarget instanceof Ci.nsIDOMWindow ? eventTarget.document.nodePrincipal : eventTarget.nodePrincipal;
if (e.principal.subsumes(targetPrincipal)) {
// If eventTarget is a window, use it as the targetWindow, otherwise
// find the window that owns the eventTarget.
let targetWindow = eventTarget instanceof Ci.nsIDOMWindow ? eventTarget : eventTarget.ownerDocument.defaultView;
eventTarget.dispatchEvent(new targetWindow.CustomEvent("WebChannelMessageToContent", {
detail: Cu.cloneInto({
id: e.data.id,
message: e.data.message,
}, targetWindow),
}));
} else {
Cu.reportError("WebChannel message failed. Principal mismatch.");
}
} else {
Cu.reportError("WebChannel message failed. No message data.");
}
});
var AudioPlaybackListener = {
QueryInterface: XPCOMUtils.generateQI([Ci.nsIObserver]),
init() {
Services.obs.addObserver(this, "audio-playback", false);
Services.obs.addObserver(this, "AudioFocusChanged", false);
Services.obs.addObserver(this, "MediaControl", false);
addMessageListener("AudioPlayback", this);
addEventListener("unload", () => {
AudioPlaybackListener.uninit();
});
},
uninit() {
Services.obs.removeObserver(this, "audio-playback");
Services.obs.removeObserver(this, "AudioFocusChanged");
Services.obs.removeObserver(this, "MediaControl");
removeMessageListener("AudioPlayback", this);
},
handleMediaControlMessage(msg) {
let utils = global.content.QueryInterface(Ci.nsIInterfaceRequestor)
.getInterface(Ci.nsIDOMWindowUtils);
let suspendTypes = Ci.nsISuspendedTypes;
switch (msg) {
case "mute":
utils.audioMuted = true;
break;
case "unmute":
utils.audioMuted = false;
break;
case "lostAudioFocus":
utils.mediaSuspend = suspendTypes.SUSPENDED_PAUSE_DISPOSABLE;
break;
case "lostAudioFocusTransiently":
utils.mediaSuspend = suspendTypes.SUSPENDED_PAUSE;
break;
case "gainAudioFocus":
utils.mediaSuspend = suspendTypes.NONE_SUSPENDED;
break;
case "mediaControlPaused":
utils.mediaSuspend = suspendTypes.SUSPENDED_PAUSE_DISPOSABLE;
break;
case "mediaControlStopped":
utils.mediaSuspend = suspendTypes.SUSPENDED_STOP_DISPOSABLE;
break;
case "blockInactivePageMedia":
utils.mediaSuspend = suspendTypes.SUSPENDED_BLOCK;
break;
case "resumeMedia":
utils.mediaSuspend = suspendTypes.NONE_SUSPENDED;
break;
default:
dump("Error : wrong media control msg!\n");
break;
}
},
observe(subject, topic, data) {
if (topic === "audio-playback") {
if (subject && subject.top == global.content) {
let name = "AudioPlayback:";
if (data === "block") {
name += "Block";
} else {
name += (data === "active") ? "Start" : "Stop";
}
sendAsyncMessage(name);
}
} else if (topic == "AudioFocusChanged" || topic == "MediaControl") {
this.handleMediaControlMessage(data);
}
},
receiveMessage(msg) {
if (msg.name == "AudioPlayback") {
this.handleMediaControlMessage(msg.data.type);
}
},
};
AudioPlaybackListener.init();
addMessageListener("Browser:PurgeSessionHistory", function BrowserPurgeHistory() {
let sessionHistory = docShell.QueryInterface(Ci.nsIWebNavigation).sessionHistory;
if (!sessionHistory) {
return;
}
// place the entry at current index at the end of the history list, so it won't get removed
if (sessionHistory.index < sessionHistory.count - 1) {
let indexEntry = sessionHistory.getEntryAtIndex(sessionHistory.index, false);
sessionHistory.QueryInterface(Components.interfaces.nsISHistoryInternal);
indexEntry.QueryInterface(Components.interfaces.nsISHEntry);
sessionHistory.addEntry(indexEntry, true);
}
let purge = sessionHistory.count;
if (global.content.location.href != "about:blank") {
--purge; // Don't remove the page the user's staring at from shistory
}
if (purge > 0) {
sessionHistory.PurgeHistory(purge);
}
});
var ViewSelectionSource = {
init: function () {
addMessageListener("ViewSource:GetSelection", this);
},
receiveMessage: function(message) {
if (message.name == "ViewSource:GetSelection") {
let selectionDetails;
try {
selectionDetails = message.objects.target ? this.getMathMLSelection(message.objects.target)
: this.getSelection();
} finally {
sendAsyncMessage("ViewSource:GetSelectionDone", selectionDetails);
}
}
},
/**
* A helper to get a path like FIXptr, but with an array instead of the
* "tumbler" notation.
* See FIXptr: http://lists.w3.org/Archives/Public/www-xml-linking-comments/2001AprJun/att-0074/01-NOTE-FIXptr-20010425.htm
*/
getPath: function(ancestor, node) {
var n = node;
var p = n.parentNode;
if (n == ancestor || !p)
return null;
var path = new Array();
if (!path)
return null;
do {
for (var i = 0; i < p.childNodes.length; i++) {
if (p.childNodes.item(i) == n) {
path.push(i);
break;
}
}
n = p;
p = n.parentNode;
} while (n != ancestor && p);
return path;
},
getSelection: function () {
// These are markers used to delimit the selection during processing. They
// are removed from the final rendering.
// We use noncharacter Unicode codepoints to minimize the risk of clashing
// with anything that might legitimately be present in the document.
// U+FDD0..FDEF <noncharacters>
const MARK_SELECTION_START = "\uFDD0";
const MARK_SELECTION_END = "\uFDEF";
var focusedWindow = Services.focus.focusedWindow || content;
var selection = focusedWindow.getSelection();
var range = selection.getRangeAt(0);
var ancestorContainer = range.commonAncestorContainer;
var doc = ancestorContainer.ownerDocument;
var startContainer = range.startContainer;
var endContainer = range.endContainer;
var startOffset = range.startOffset;
var endOffset = range.endOffset;
// let the ancestor be an element
var Node = doc.defaultView.Node;
if (ancestorContainer.nodeType == Node.TEXT_NODE ||
ancestorContainer.nodeType == Node.CDATA_SECTION_NODE)
ancestorContainer = ancestorContainer.parentNode;
// for selectAll, let's use the entire document, including <html>...</html>
// @see nsDocumentViewer::SelectAll() for how selectAll is implemented
try {
if (ancestorContainer == doc.body)
ancestorContainer = doc.documentElement;
} catch (e) { }
// each path is a "child sequence" (a.k.a. "tumbler") that
// descends from the ancestor down to the boundary point
var startPath = this.getPath(ancestorContainer, startContainer);
var endPath = this.getPath(ancestorContainer, endContainer);
// clone the fragment of interest and reset everything to be relative to it
// note: it is with the clone that we operate/munge from now on. Also note
// that we clone into a data document to prevent images in the fragment from
// loading and the like. The use of importNode here, as opposed to adoptNode,
// is _very_ important.
// XXXbz wish there were a less hacky way to create an untrusted document here
var isHTML = (doc.createElement("div").tagName == "DIV");
var dataDoc = isHTML ?
ancestorContainer.ownerDocument.implementation.createHTMLDocument("") :
ancestorContainer.ownerDocument.implementation.createDocument("", "", null);
ancestorContainer = dataDoc.importNode(ancestorContainer, true);
startContainer = ancestorContainer;
endContainer = ancestorContainer;
// Only bother with the selection if it can be remapped. Don't mess with
// leaf elements (such as <isindex>) that secretly use anynomous content
// for their display appearance.
var canDrawSelection = ancestorContainer.hasChildNodes();
var tmpNode;
if (canDrawSelection) {
var i;
for (i = startPath ? startPath.length-1 : -1; i >= 0; i--) {
startContainer = startContainer.childNodes.item(startPath[i]);
}
for (i = endPath ? endPath.length-1 : -1; i >= 0; i--) {
endContainer = endContainer.childNodes.item(endPath[i]);
}
// add special markers to record the extent of the selection
// note: |startOffset| and |endOffset| are interpreted either as
// offsets in the text data or as child indices (see the Range spec)
// (here, munging the end point first to keep the start point safe...)
if (endContainer.nodeType == Node.TEXT_NODE ||
endContainer.nodeType == Node.CDATA_SECTION_NODE) {
// do some extra tweaks to try to avoid the view-source output to look like
// ...<tag>]... or ...]</tag>... (where ']' marks the end of the selection).
// To get a neat output, the idea here is to remap the end point from:
// 1. ...<tag>]... to ...]<tag>...
// 2. ...]</tag>... to ...</tag>]...
if ((endOffset > 0 && endOffset < endContainer.data.length) ||
!endContainer.parentNode || !endContainer.parentNode.parentNode)
endContainer.insertData(endOffset, MARK_SELECTION_END);
else {
tmpNode = dataDoc.createTextNode(MARK_SELECTION_END);
endContainer = endContainer.parentNode;
if (endOffset === 0)
endContainer.parentNode.insertBefore(tmpNode, endContainer);
else
endContainer.parentNode.insertBefore(tmpNode, endContainer.nextSibling);
}
}
else {
tmpNode = dataDoc.createTextNode(MARK_SELECTION_END);
endContainer.insertBefore(tmpNode, endContainer.childNodes.item(endOffset));
}
if (startContainer.nodeType == Node.TEXT_NODE ||
startContainer.nodeType == Node.CDATA_SECTION_NODE) {
// do some extra tweaks to try to avoid the view-source output to look like
// ...<tag>[... or ...[</tag>... (where '[' marks the start of the selection).
// To get a neat output, the idea here is to remap the start point from:
// 1. ...<tag>[... to ...[<tag>...
// 2. ...[</tag>... to ...</tag>[...
if ((startOffset > 0 && startOffset < startContainer.data.length) ||
!startContainer.parentNode || !startContainer.parentNode.parentNode ||
startContainer != startContainer.parentNode.lastChild)
startContainer.insertData(startOffset, MARK_SELECTION_START);
else {
tmpNode = dataDoc.createTextNode(MARK_SELECTION_START);
startContainer = startContainer.parentNode;
if (startOffset === 0)
startContainer.parentNode.insertBefore(tmpNode, startContainer);
else
startContainer.parentNode.insertBefore(tmpNode, startContainer.nextSibling);
}
}
else {
tmpNode = dataDoc.createTextNode(MARK_SELECTION_START);
startContainer.insertBefore(tmpNode, startContainer.childNodes.item(startOffset));
}
}
// now extract and display the syntax highlighted source
tmpNode = dataDoc.createElementNS("http://www.w3.org/1999/xhtml", "div");
tmpNode.appendChild(ancestorContainer);
return { uri: (isHTML ? "view-source:data:text/html;charset=utf-8," :
"view-source:data:application/xml;charset=utf-8,")
+ encodeURIComponent(tmpNode.innerHTML),
drawSelection: canDrawSelection,
baseURI: doc.baseURI };
},
/**
* Reformat the source of a MathML node to highlight the node that was targetted.
*
* @param node
* Some element within the fragment of interest.
*/
getMathMLSelection: function(node) {
var Node = node.ownerDocument.defaultView.Node;
this._lineCount = 0;
this._startTargetLine = 0;
this._endTargetLine = 0;
this._targetNode = node;
if (this._targetNode && this._targetNode.nodeType == Node.TEXT_NODE)
this._targetNode = this._targetNode.parentNode;
// walk up the tree to the top-level element (e.g., <math>, <svg>)
var topTag = "math";
var topNode = this._targetNode;
while (topNode && topNode.localName != topTag) {
topNode = topNode.parentNode;
}
if (!topNode)
return undefined;
// serialize
const VIEW_SOURCE_CSS = "resource://gre-resources/viewsource.css";
const BUNDLE_URL = "chrome://global/locale/viewSource.properties";
let bundle = Services.strings.createBundle(BUNDLE_URL);
var title = bundle.GetStringFromName("viewMathMLSourceTitle");
var wrapClass = this.wrapLongLines ? ' class="wrap"' : '';
var source =
'<!DOCTYPE html>'
+ '<html>'
+ '<head><title>' + title + '</title>'
+ '<link rel="stylesheet" type="text/css" href="' + VIEW_SOURCE_CSS + '">'
+ '<style type="text/css">'
+ '#target { border: dashed 1px; background-color: lightyellow; }'
+ '</style>'
+ '</head>'
+ '<body id="viewsource"' + wrapClass
+ ' onload="document.title=\''+title+'\'; document.getElementById(\'target\').scrollIntoView(true)">'
+ '<pre>'
+ this.getOuterMarkup(topNode, 0)
+ '</pre></body></html>'
; // end
return { uri: "data:text/html;charset=utf-8," + encodeURIComponent(source),
drawSelection: false, baseURI: node.ownerDocument.baseURI };
},
get wrapLongLines() {
return Services.prefs.getBoolPref("view_source.wrap_long_lines");
},
getInnerMarkup: function(node, indent) {
var str = '';
for (var i = 0; i < node.childNodes.length; i++) {
str += this.getOuterMarkup(node.childNodes.item(i), indent);
}
return str;
},
getOuterMarkup: function(node, indent) {
var Node = node.ownerDocument.defaultView.Node;
var newline = "";
var padding = "";
var str = "";
if (node == this._targetNode) {
this._startTargetLine = this._lineCount;
str += '</pre><pre id="target">';
}
switch (node.nodeType) {
case Node.ELEMENT_NODE: // Element
// to avoid the wide gap problem, '\n' is not emitted on the first
// line and the lines before & after the <pre id="target">...</pre>
if (this._lineCount > 0 &&
this._lineCount != this._startTargetLine &&
this._lineCount != this._endTargetLine) {
newline = "\n";
}
this._lineCount++;
for (var k = 0; k < indent; k++) {
padding += " ";
}
str += newline + padding
+ '<<span class="start-tag">' + node.nodeName + '</span>';
for (var i = 0; i < node.attributes.length; i++) {
var attr = node.attributes.item(i);
if (attr.nodeName.match(/^[-_]moz/)) {
continue;
}
str += ' <span class="attribute-name">'
+ attr.nodeName
+ '</span>=<span class="attribute-value">"'
+ this.unicodeToEntity(attr.nodeValue)
+ '"</span>';
}
if (!node.hasChildNodes()) {
str += "/>";
}
else {
str += ">";
var oldLine = this._lineCount;
str += this.getInnerMarkup(node, indent + 2);
if (oldLine == this._lineCount) {
newline = "";
padding = "";
}
else {
newline = (this._lineCount == this._endTargetLine) ? "" : "\n";
this._lineCount++;
}
str += newline + padding
+ '</<span class="end-tag">' + node.nodeName + '</span>>';
}
break;
case Node.TEXT_NODE: // Text
var tmp = node.nodeValue;
tmp = tmp.replace(/(\n|\r|\t)+/g, " ");
tmp = tmp.replace(/^ +/, "");
tmp = tmp.replace(/ +$/, "");
if (tmp.length != 0) {
str += '<span class="text">' + this.unicodeToEntity(tmp) + '</span>';
}
break;
default:
break;
}
if (node == this._targetNode) {
this._endTargetLine = this._lineCount;
str += '</pre><pre>';
}
return str;
},
unicodeToEntity: function(text) {
const charTable = {
'&': '&<span class="entity">amp;</span>',
'<': '&<span class="entity">lt;</span>',
'>': '&<span class="entity">gt;</span>',
'"': '&<span class="entity">quot;</span>'
};
function charTableLookup(letter) {
return charTable[letter];
}
function convertEntity(letter) {
try {
var unichar = this._entityConverter
.ConvertToEntity(letter, entityVersion);
var entity = unichar.substring(1); // extract '&'
return '&<span class="entity">' + entity + '</span>';
} catch (ex) {
return letter;
}
}
if (!this._entityConverter) {
try {
this._entityConverter = Cc["@mozilla.org/intl/entityconverter;1"]
.createInstance(Ci.nsIEntityConverter);
} catch (e) { }
}
const entityVersion = Ci.nsIEntityConverter.entityW3C;
var str = text;
// replace chars in our charTable
str = str.replace(/[<>&"]/g, charTableLookup);
// replace chars > 0x7f via nsIEntityConverter
str = str.replace(/[^\0-\u007f]/g, convertEntity);
return str;
}
};
ViewSelectionSource.init();
addEventListener("MozApplicationManifest", function(e) {
let doc = e.target;
let info = {
uri: doc.documentURI,
characterSet: doc.characterSet,
manifest: doc.documentElement.getAttribute("manifest"),
principal: doc.nodePrincipal,
};
sendAsyncMessage("MozApplicationManifest", info);
}, false);
let AutoCompletePopup = {
QueryInterface: XPCOMUtils.generateQI([Ci.nsIAutoCompletePopup]),
_connected: false,
MESSAGES: [
"FormAutoComplete:HandleEnter",
"FormAutoComplete:PopupClosed",
"FormAutoComplete:PopupOpened",
"FormAutoComplete:RequestFocus",
],
init: function() {
addEventListener("unload", this);
addEventListener("DOMContentLoaded", this);
for (let messageName of this.MESSAGES) {
addMessageListener(messageName, this);
}
this._input = null;
this._popupOpen = false;
},
destroy: function() {
if (this._connected) {
let controller = Cc["@mozilla.org/satchel/form-fill-controller;1"]
.getService(Ci.nsIFormFillController);
controller.detachFromBrowser(docShell);
this._connected = false;
}
removeEventListener("unload", this);
removeEventListener("DOMContentLoaded", this);
for (let messageName of this.MESSAGES) {
removeMessageListener(messageName, this);
}
},
handleEvent(event) {
switch (event.type) {
case "DOMContentLoaded": {
removeEventListener("DOMContentLoaded", this);
// We need to wait for a content viewer to be available
// before we can attach our AutoCompletePopup handler,
// since nsFormFillController assumes one will exist
// when we call attachToBrowser.
// Hook up the form fill autocomplete controller.
let controller = Cc["@mozilla.org/satchel/form-fill-controller;1"]
.getService(Ci.nsIFormFillController);
controller.attachToBrowser(docShell,
this.QueryInterface(Ci.nsIAutoCompletePopup));
this._connected = true;
break;
}
case "unload": {
this.destroy();
break;
}
}
},
receiveMessage(message) {
switch (message.name) {
case "FormAutoComplete:HandleEnter": {
this.selectedIndex = message.data.selectedIndex;
let controller = Cc["@mozilla.org/autocomplete/controller;1"]
.getService(Ci.nsIAutoCompleteController);
controller.handleEnter(message.data.isPopupSelection);
break;
}
case "FormAutoComplete:PopupClosed": {
this._popupOpen = false;
break;
}
case "FormAutoComplete:PopupOpened": {
this._popupOpen = true;
break;
}
case "FormAutoComplete:RequestFocus": {
if (this._input) {
this._input.focus();
}
break;
}
}
},
get input () { return this._input; },
get overrideValue () { return null; },
set selectedIndex (index) {
sendAsyncMessage("FormAutoComplete:SetSelectedIndex", { index });
},
get selectedIndex () {
// selectedIndex getter must be synchronous because we need the
// correct value when the controller is in controller::HandleEnter.
// We can't easily just let the parent inform us the new value every
// time it changes because not every action that can change the
// selectedIndex is trivial to catch (e.g. moving the mouse over the
// list).
return sendSyncMessage("FormAutoComplete:GetSelectedIndex", {});
},
get popupOpen () {
return this._popupOpen;
},
openAutocompletePopup: function (input, element) {
if (this._popupOpen || !input) {
return;
}
let rect = BrowserUtils.getElementBoundingScreenRect(element);
let window = element.ownerDocument.defaultView;
let dir = window.getComputedStyle(element).direction;
let results = this.getResultsFromController(input);
sendAsyncMessage("FormAutoComplete:MaybeOpenPopup",
{ results, rect, dir });
this._input = input;
},
closePopup: function () {
// We set this here instead of just waiting for the
// PopupClosed message to do it so that we don't end
// up in a state where the content thinks that a popup
// is open when it isn't (or soon won't be).
this._popupOpen = false;
sendAsyncMessage("FormAutoComplete:ClosePopup", {});
},
invalidate: function () {
if (this._popupOpen) {
let results = this.getResultsFromController(this._input);
sendAsyncMessage("FormAutoComplete:Invalidate", { results });
}
},
selectBy: function(reverse, page) {
this._index = sendSyncMessage("FormAutoComplete:SelectBy", {
reverse: reverse,
page: page
});
},
getResultsFromController(inputField) {
let results = [];
if (!inputField) {
return results;
}
let controller = inputField.controller;
if (!(controller instanceof Ci.nsIAutoCompleteController)) {
return results;
}
for (let i = 0; i < controller.matchCount; ++i) {
let result = {};
result.value = controller.getValueAt(i);
result.label = controller.getLabelAt(i);
result.comment = controller.getCommentAt(i);
result.style = controller.getStyleAt(i);
result.image = controller.getImageAt(i);
results.push(result);
}
return results;
},
}
AutoCompletePopup.init();
/**
* DateTimePickerListener is the communication channel between the input box
* (content) for date/time input types and its picker (chrome).
*/
let DateTimePickerListener = {
/**
* On init, just listen for the event to open the picker, once the picker is
* opened, we'll listen for update and close events.
*/
init: function() {
addEventListener("MozOpenDateTimePicker", this);
this._inputElement = null;
addEventListener("unload", () => {
this.uninit();
});
},
uninit: function() {
removeEventListener("MozOpenDateTimePicker", this);
this._inputElement = null;
},
/**
* Cleanup function called when picker is closed.
*/
close: function() {
this.removeListeners();
this._inputElement.setDateTimePickerState(false);
this._inputElement = null;
},
/**
* Called after picker is opened to start listening for input box update
* events.
*/
addListeners: function() {
addEventListener("MozUpdateDateTimePicker", this);
addEventListener("MozCloseDateTimePicker", this);
addEventListener("pagehide", this);
addMessageListener("FormDateTime:PickerValueChanged", this);
addMessageListener("FormDateTime:PickerClosed", this);
},
/**
* Stop listeneing for events when picker is closed.
*/
removeListeners: function() {
removeEventListener("MozUpdateDateTimePicker", this);
removeEventListener("MozCloseDateTimePicker", this);
removeEventListener("pagehide", this);
removeMessageListener("FormDateTime:PickerValueChanged", this);
removeMessageListener("FormDateTime:PickerClosed", this);
},
/**
* Helper function that returns the CSS direction property of the element.
*/
getComputedDirection: function(aElement) {
return aElement.ownerDocument.defaultView.getComputedStyle(aElement)
.getPropertyValue("direction");
},
/**
* Helper function that returns the rect of the element, which is the position
* relative to the left/top of the content area.
*/
getBoundingContentRect: function(aElement) {
return BrowserUtils.getElementBoundingRect(aElement);
},
getTimePickerPref: function() {
return Services.prefs.getBoolPref("dom.forms.datetime.timepicker");
},
/**
* nsIMessageListener.
*/
receiveMessage: function(aMessage) {
switch (aMessage.name) {
case "FormDateTime:PickerClosed": {
this.close();
break;
}
case "FormDateTime:PickerValueChanged": {
this._inputElement.updateDateTimeInputBox(aMessage.data);
break;
}
default:
break;
}
},
/**
* nsIDOMEventListener, for chrome events sent by the input element and other
* DOM events.
*/
handleEvent: function(aEvent) {
switch (aEvent.type) {
case "MozOpenDateTimePicker": {
// Time picker is disabled when preffed off
if (!(aEvent.originalTarget instanceof content.HTMLInputElement) ||
(aEvent.originalTarget.type == "time" && !this.getTimePickerPref())) {
return;
}
if (this._inputElement) {
// This happens when we're trying to open a picker when another picker
// is still open. We ignore this request to let the first picker
// close gracefully.
return;
}
this._inputElement = aEvent.originalTarget;
this._inputElement.setDateTimePickerState(true);
this.addListeners();
let value = this._inputElement.getDateTimeInputBoxValue();
sendAsyncMessage("FormDateTime:OpenPicker", {
rect: this.getBoundingContentRect(this._inputElement),
dir: this.getComputedDirection(this._inputElement),
type: this._inputElement.type,
detail: {
// Pass partial value if it's available, otherwise pass input
// element's value.
value: Object.keys(value).length > 0 ? value
: this._inputElement.value,
min: this._inputElement.getMinimum(),
max: this._inputElement.getMaximum(),
step: this._inputElement.getStep(),
stepBase: this._inputElement.getStepBase(),
},
});
break;
}
case "MozUpdateDateTimePicker": {
let value = this._inputElement.getDateTimeInputBoxValue();
value.type = this._inputElement.type;
sendAsyncMessage("FormDateTime:UpdatePicker", { value });
break;
}
case "MozCloseDateTimePicker": {
sendAsyncMessage("FormDateTime:ClosePicker");
this.close();
break;
}
case "pagehide": {
if (this._inputElement &&
this._inputElement.ownerDocument == aEvent.target) {
sendAsyncMessage("FormDateTime:ClosePicker");
this.close();
}
break;
}
default:
break;
}
},
}
DateTimePickerListener.init();
|
