forked from mykmelez/gecko
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathWidgetEventImpl.cpp
1844 lines (1678 loc) · 60.7 KB
/
WidgetEventImpl.cpp
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
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 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/. */
#include "mozilla/BasicEvents.h"
#include "mozilla/ContentEvents.h"
#include "mozilla/EventStateManager.h"
#include "mozilla/InternalMutationEvent.h"
#include "mozilla/MiscEvents.h"
#include "mozilla/MouseEvents.h"
#include "mozilla/Preferences.h"
#include "mozilla/StaticPrefs.h"
#include "mozilla/TextEvents.h"
#include "mozilla/TouchEvents.h"
#include "mozilla/dom/KeyboardEventBinding.h"
#include "nsCommandParams.h"
#include "nsContentUtils.h"
#include "nsIContent.h"
#include "nsPrintfCString.h"
namespace mozilla {
/******************************************************************************
* Global helper methods
******************************************************************************/
const char* ToChar(EventMessage aEventMessage) {
switch (aEventMessage) {
#define NS_EVENT_MESSAGE(aMessage) \
case aMessage: \
return #aMessage;
#include "mozilla/EventMessageList.h"
#undef NS_EVENT_MESSAGE
default:
return "illegal event message";
}
}
const char* ToChar(EventClassID aEventClassID) {
switch (aEventClassID) {
#define NS_ROOT_EVENT_CLASS(aPrefix, aName) \
case eBasic##aName##Class: \
return "eBasic" #aName "Class";
#define NS_EVENT_CLASS(aPrefix, aName) \
case e##aName##Class: \
return "e" #aName "Class";
#include "mozilla/EventClassList.h"
#undef NS_EVENT_CLASS
#undef NS_ROOT_EVENT_CLASS
default:
return "illegal event class ID";
}
}
const nsCString ToString(KeyNameIndex aKeyNameIndex) {
if (aKeyNameIndex == KEY_NAME_INDEX_USE_STRING) {
return NS_LITERAL_CSTRING("USE_STRING");
}
nsAutoString keyName;
WidgetKeyboardEvent::GetDOMKeyName(aKeyNameIndex, keyName);
return NS_ConvertUTF16toUTF8(keyName);
}
const nsCString ToString(CodeNameIndex aCodeNameIndex) {
if (aCodeNameIndex == CODE_NAME_INDEX_USE_STRING) {
return NS_LITERAL_CSTRING("USE_STRING");
}
nsAutoString codeName;
WidgetKeyboardEvent::GetDOMCodeName(aCodeNameIndex, codeName);
return NS_ConvertUTF16toUTF8(codeName);
}
const char* ToChar(Command aCommand) {
if (aCommand == Command::DoNothing) {
return "CommandDoNothing";
}
switch (aCommand) {
#define NS_DEFINE_COMMAND(aName, aCommandStr) \
case Command::aName: \
return "Command::" #aName;
#define NS_DEFINE_COMMAND_WITH_PARAM(aName, aCommandStr, aParam) \
case Command::aName: \
return "Command::" #aName;
#define NS_DEFINE_COMMAND_NO_EXEC_COMMAND(aName) \
case Command::aName: \
return "Command::" #aName;
#include "mozilla/CommandList.h"
#undef NS_DEFINE_COMMAND
#undef NS_DEFINE_COMMAND_WITH_PARAM
#undef NS_DEFINE_COMMAND_NO_EXEC_COMMAND
default:
return "illegal command value";
}
}
const nsCString GetDOMKeyCodeName(uint32_t aKeyCode) {
switch (aKeyCode) {
#define NS_DISALLOW_SAME_KEYCODE
#define NS_DEFINE_VK(aDOMKeyName, aDOMKeyCode) \
case aDOMKeyCode: \
return NS_LITERAL_CSTRING(#aDOMKeyName);
#include "mozilla/VirtualKeyCodeList.h"
#undef NS_DEFINE_VK
#undef NS_DISALLOW_SAME_KEYCODE
default:
return nsPrintfCString("Invalid DOM keyCode (0x%08X)", aKeyCode);
}
}
bool IsValidRawTextRangeValue(RawTextRangeType aRawTextRangeType) {
switch (static_cast<TextRangeType>(aRawTextRangeType)) {
case TextRangeType::eUninitialized:
case TextRangeType::eCaret:
case TextRangeType::eRawClause:
case TextRangeType::eSelectedRawClause:
case TextRangeType::eConvertedClause:
case TextRangeType::eSelectedClause:
return true;
default:
return false;
}
}
RawTextRangeType ToRawTextRangeType(TextRangeType aTextRangeType) {
return static_cast<RawTextRangeType>(aTextRangeType);
}
TextRangeType ToTextRangeType(RawTextRangeType aRawTextRangeType) {
MOZ_ASSERT(IsValidRawTextRangeValue(aRawTextRangeType));
return static_cast<TextRangeType>(aRawTextRangeType);
}
const char* ToChar(TextRangeType aTextRangeType) {
switch (aTextRangeType) {
case TextRangeType::eUninitialized:
return "TextRangeType::eUninitialized";
case TextRangeType::eCaret:
return "TextRangeType::eCaret";
case TextRangeType::eRawClause:
return "TextRangeType::eRawClause";
case TextRangeType::eSelectedRawClause:
return "TextRangeType::eSelectedRawClause";
case TextRangeType::eConvertedClause:
return "TextRangeType::eConvertedClause";
case TextRangeType::eSelectedClause:
return "TextRangeType::eSelectedClause";
default:
return "Invalid TextRangeType";
}
}
SelectionType ToSelectionType(TextRangeType aTextRangeType) {
switch (aTextRangeType) {
case TextRangeType::eRawClause:
return SelectionType::eIMERawClause;
case TextRangeType::eSelectedRawClause:
return SelectionType::eIMESelectedRawClause;
case TextRangeType::eConvertedClause:
return SelectionType::eIMEConvertedClause;
case TextRangeType::eSelectedClause:
return SelectionType::eIMESelectedClause;
default:
MOZ_CRASH("TextRangeType is invalid");
return SelectionType::eNormal;
}
}
/******************************************************************************
* non class method implementation
******************************************************************************/
static nsDataHashtable<nsDepCharHashKey, Command>* sCommandHashtable = nullptr;
Command GetInternalCommand(const char* aCommandName,
const nsCommandParams* aCommandParams) {
if (!aCommandName) {
return Command::DoNothing;
}
// Special cases for "cmd_align". It's mapped to multiple internal commands
// with additional param. Therefore, we cannot handle it with the hashtable.
if (!strcmp(aCommandName, "cmd_align")) {
if (!aCommandParams) {
// Note that if this is called by EditorCommand::IsCommandEnabled(),
// it cannot set aCommandParams. So, don't warn in this case even though
// this is illegal case for DoCommandParams().
return Command::FormatJustify;
}
nsAutoCString cValue;
nsresult rv = aCommandParams->GetCString("state_attribute", cValue);
if (NS_FAILED(rv)) {
nsString value; // Avoid copying the string buffer with using nsString.
rv = aCommandParams->GetString("state_attribute", value);
if (NS_FAILED(rv)) {
return Command::FormatJustifyNone;
}
cValue = NS_ConvertUTF16toUTF8(value);
}
if (cValue.LowerCaseEqualsASCII("left")) {
return Command::FormatJustifyLeft;
}
if (cValue.LowerCaseEqualsASCII("right")) {
return Command::FormatJustifyRight;
}
if (cValue.LowerCaseEqualsASCII("center")) {
return Command::FormatJustifyCenter;
}
if (cValue.LowerCaseEqualsASCII("justify")) {
return Command::FormatJustifyFull;
}
if (cValue.IsEmpty()) {
return Command::FormatJustifyNone;
}
return Command::DoNothing;
}
if (!sCommandHashtable) {
sCommandHashtable = new nsDataHashtable<nsDepCharHashKey, Command>();
#define NS_DEFINE_COMMAND(aName, aCommandStr) \
sCommandHashtable->Put(#aCommandStr, Command::aName);
#define NS_DEFINE_COMMAND_WITH_PARAM(aName, aCommandStr, aParam)
#define NS_DEFINE_COMMAND_NO_EXEC_COMMAND(aName)
#include "mozilla/CommandList.h"
#undef NS_DEFINE_COMMAND
#undef NS_DEFINE_COMMAND_WITH_PARAM
#undef NS_DEFINE_COMMAND_NO_EXEC_COMMAND
}
Command command = Command::DoNothing;
if (!sCommandHashtable->Get(aCommandName, &command)) {
return Command::DoNothing;
}
return command;
}
/******************************************************************************
* As*Event() implementation
******************************************************************************/
#define NS_ROOT_EVENT_CLASS(aPrefix, aName)
#define NS_EVENT_CLASS(aPrefix, aName) \
aPrefix##aName* WidgetEvent::As##aName() { return nullptr; } \
\
const aPrefix##aName* WidgetEvent::As##aName() const { \
return const_cast<WidgetEvent*>(this)->As##aName(); \
}
#include "mozilla/EventClassList.h"
#undef NS_EVENT_CLASS
#undef NS_ROOT_EVENT_CLASS
/******************************************************************************
* mozilla::WidgetEvent
*
* Event struct type checking methods.
******************************************************************************/
bool WidgetEvent::IsQueryContentEvent() const {
return mClass == eQueryContentEventClass;
}
bool WidgetEvent::IsSelectionEvent() const {
return mClass == eSelectionEventClass;
}
bool WidgetEvent::IsContentCommandEvent() const {
return mClass == eContentCommandEventClass;
}
bool WidgetEvent::IsNativeEventDelivererForPlugin() const {
return mClass == ePluginEventClass;
}
/******************************************************************************
* mozilla::WidgetEvent
*
* Event message checking methods.
******************************************************************************/
bool WidgetEvent::HasMouseEventMessage() const {
switch (mMessage) {
case eMouseDown:
case eMouseUp:
case eMouseClick:
case eMouseDoubleClick:
case eMouseAuxClick:
case eMouseEnterIntoWidget:
case eMouseExitFromWidget:
case eMouseActivate:
case eMouseOver:
case eMouseOut:
case eMouseHitTest:
case eMouseMove:
return true;
default:
return false;
}
}
bool WidgetEvent::HasDragEventMessage() const {
switch (mMessage) {
case eDragEnter:
case eDragOver:
case eDragExit:
case eDrag:
case eDragEnd:
case eDragStart:
case eDrop:
case eDragLeave:
return true;
default:
return false;
}
}
/* static */
bool WidgetEvent::IsKeyEventMessage(EventMessage aMessage) {
switch (aMessage) {
case eKeyDown:
case eKeyPress:
case eKeyUp:
case eKeyDownOnPlugin:
case eKeyUpOnPlugin:
case eAccessKeyNotFound:
return true;
default:
return false;
}
}
bool WidgetEvent::HasIMEEventMessage() const {
switch (mMessage) {
case eCompositionStart:
case eCompositionEnd:
case eCompositionUpdate:
case eCompositionChange:
case eCompositionCommitAsIs:
case eCompositionCommit:
return true;
default:
return false;
}
}
bool WidgetEvent::HasPluginActivationEventMessage() const {
return mMessage == ePluginActivate || mMessage == ePluginFocus;
}
/******************************************************************************
* mozilla::WidgetEvent
*
* Specific event checking methods.
******************************************************************************/
bool WidgetEvent::CanBeSentToRemoteProcess() const {
// If this event is explicitly marked as shouldn't be sent to remote process,
// just return false.
if (IsCrossProcessForwardingStopped()) {
return false;
}
if (mClass == eKeyboardEventClass || mClass == eWheelEventClass) {
return true;
}
switch (mMessage) {
case eMouseDown:
case eMouseUp:
case eMouseMove:
case eContextMenu:
case eMouseEnterIntoWidget:
case eMouseExitFromWidget:
case eMouseTouchDrag:
case eTouchStart:
case eTouchMove:
case eTouchEnd:
case eTouchCancel:
case eDragOver:
case eDragExit:
case eDrop:
return true;
default:
return false;
}
}
bool WidgetEvent::WillBeSentToRemoteProcess() const {
// This event won't be posted to remote process if it's already explicitly
// stopped.
if (IsCrossProcessForwardingStopped()) {
return false;
}
// When mOriginalTarget is nullptr, this method shouldn't be used.
if (NS_WARN_IF(!mOriginalTarget)) {
return false;
}
nsCOMPtr<nsIContent> originalTarget = do_QueryInterface(mOriginalTarget);
return EventStateManager::IsRemoteTarget(originalTarget);
}
bool WidgetEvent::IsRetargetedNativeEventDelivererForPlugin() const {
const WidgetPluginEvent* pluginEvent = AsPluginEvent();
return pluginEvent && pluginEvent->mRetargetToFocusedDocument;
}
bool WidgetEvent::IsNonRetargetedNativeEventDelivererForPlugin() const {
const WidgetPluginEvent* pluginEvent = AsPluginEvent();
return pluginEvent && !pluginEvent->mRetargetToFocusedDocument;
}
bool WidgetEvent::IsIMERelatedEvent() const {
return HasIMEEventMessage() || IsQueryContentEvent() || IsSelectionEvent();
}
bool WidgetEvent::IsUsingCoordinates() const {
const WidgetMouseEvent* mouseEvent = AsMouseEvent();
if (mouseEvent) {
return !mouseEvent->IsContextMenuKeyEvent();
}
return !HasKeyEventMessage() && !IsIMERelatedEvent() &&
!HasPluginActivationEventMessage() &&
!IsNativeEventDelivererForPlugin() && !IsContentCommandEvent();
}
bool WidgetEvent::IsTargetedAtFocusedWindow() const {
const WidgetMouseEvent* mouseEvent = AsMouseEvent();
if (mouseEvent) {
return mouseEvent->IsContextMenuKeyEvent();
}
return HasKeyEventMessage() || IsIMERelatedEvent() ||
IsContentCommandEvent() || IsRetargetedNativeEventDelivererForPlugin();
}
bool WidgetEvent::IsTargetedAtFocusedContent() const {
const WidgetMouseEvent* mouseEvent = AsMouseEvent();
if (mouseEvent) {
return mouseEvent->IsContextMenuKeyEvent();
}
return HasKeyEventMessage() || IsIMERelatedEvent() ||
IsRetargetedNativeEventDelivererForPlugin();
}
bool WidgetEvent::IsAllowedToDispatchDOMEvent() const {
switch (mClass) {
case eMouseEventClass:
if (mMessage == eMouseTouchDrag) {
return false;
}
MOZ_FALLTHROUGH;
case ePointerEventClass:
// We want synthesized mouse moves to cause mouseover and mouseout
// DOM events (EventStateManager::PreHandleEvent), but not mousemove
// DOM events.
// Synthesized button up events also do not cause DOM events because they
// do not have a reliable mRefPoint.
return AsMouseEvent()->mReason == WidgetMouseEvent::eReal;
case eWheelEventClass: {
// wheel event whose all delta values are zero by user pref applied, it
// shouldn't cause a DOM event.
const WidgetWheelEvent* wheelEvent = AsWheelEvent();
return wheelEvent->mDeltaX != 0.0 || wheelEvent->mDeltaY != 0.0 ||
wheelEvent->mDeltaZ != 0.0;
}
case eTouchEventClass:
return mMessage != eTouchPointerCancel;
// Following events are handled in EventStateManager, so, we don't need to
// dispatch DOM event for them into the DOM tree.
case eQueryContentEventClass:
case eSelectionEventClass:
case eContentCommandEventClass:
return false;
default:
return true;
}
}
bool WidgetEvent::IsAllowedToDispatchInSystemGroup() const {
// We don't expect to implement default behaviors with pointer events because
// if we do, prevent default on mouse events can't prevent default behaviors
// anymore.
return mClass != ePointerEventClass;
}
bool WidgetEvent::IsBlockedForFingerprintingResistance() const {
if (!nsContentUtils::ShouldResistFingerprinting()) {
return false;
}
switch (mClass) {
case eKeyboardEventClass: {
const WidgetKeyboardEvent* keyboardEvent = AsKeyboardEvent();
return (keyboardEvent->mKeyNameIndex == KEY_NAME_INDEX_Alt ||
keyboardEvent->mKeyNameIndex == KEY_NAME_INDEX_Shift ||
keyboardEvent->mKeyNameIndex == KEY_NAME_INDEX_Control ||
keyboardEvent->mKeyNameIndex == KEY_NAME_INDEX_AltGraph);
}
case ePointerEventClass: {
const WidgetPointerEvent* pointerEvent = AsPointerEvent();
// We suppress the pointer events if it is not primary for fingerprinting
// resistance. It is because of that we want to spoof any pointer event
// into a mouse pointer event and the mouse pointer event only has
// isPrimary as true.
return !pointerEvent->mIsPrimary;
}
default:
return false;
}
}
/******************************************************************************
* mozilla::WidgetEvent
*
* Misc methods.
******************************************************************************/
static dom::EventTarget* GetTargetForDOMEvent(dom::EventTarget* aTarget) {
return aTarget ? aTarget->GetTargetForDOMEvent() : nullptr;
}
dom::EventTarget* WidgetEvent::GetDOMEventTarget() const {
return GetTargetForDOMEvent(mTarget);
}
dom::EventTarget* WidgetEvent::GetCurrentDOMEventTarget() const {
return GetTargetForDOMEvent(mCurrentTarget);
}
dom::EventTarget* WidgetEvent::GetOriginalDOMEventTarget() const {
if (mOriginalTarget) {
return GetTargetForDOMEvent(mOriginalTarget);
}
return GetDOMEventTarget();
}
void WidgetEvent::PreventDefault(bool aCalledByDefaultHandler,
nsIPrincipal* aPrincipal) {
if (mMessage == ePointerDown) {
if (aCalledByDefaultHandler) {
// Shouldn't prevent default on pointerdown by default handlers to stop
// firing legacy mouse events. Use MOZ_ASSERT to catch incorrect usages
// in debug builds.
MOZ_ASSERT(false);
return;
}
if (aPrincipal) {
nsAutoString addonId;
Unused << NS_WARN_IF(NS_FAILED(aPrincipal->GetAddonId(addonId)));
if (!addonId.IsEmpty()) {
// Ignore the case that it's called by a web extension.
return;
}
}
}
mFlags.PreventDefault(aCalledByDefaultHandler);
}
bool WidgetEvent::IsUserAction() const {
if (!IsTrusted()) {
return false;
}
// FYI: eMouseScrollEventClass and ePointerEventClass represent
// user action but they are synthesized events.
switch (mClass) {
case eKeyboardEventClass:
case eCompositionEventClass:
case eMouseScrollEventClass:
case eWheelEventClass:
case eGestureNotifyEventClass:
case eSimpleGestureEventClass:
case eTouchEventClass:
case eCommandEventClass:
case eContentCommandEventClass:
case ePluginEventClass:
return true;
case eMouseEventClass:
case eDragEventClass:
case ePointerEventClass:
return AsMouseEvent()->IsReal();
default:
return false;
}
}
/******************************************************************************
* mozilla::WidgetInputEvent
******************************************************************************/
/* static */
Modifier WidgetInputEvent::GetModifier(const nsAString& aDOMKeyName) {
if (aDOMKeyName.EqualsLiteral("Accel")) {
return AccelModifier();
}
KeyNameIndex keyNameIndex = WidgetKeyboardEvent::GetKeyNameIndex(aDOMKeyName);
return WidgetKeyboardEvent::GetModifierForKeyName(keyNameIndex);
}
/* static */
Modifier WidgetInputEvent::AccelModifier() {
static Modifier sAccelModifier = MODIFIER_NONE;
if (sAccelModifier == MODIFIER_NONE) {
switch (Preferences::GetInt("ui.key.accelKey", 0)) {
case dom::KeyboardEvent_Binding::DOM_VK_META:
sAccelModifier = MODIFIER_META;
break;
case dom::KeyboardEvent_Binding::DOM_VK_WIN:
sAccelModifier = MODIFIER_OS;
break;
case dom::KeyboardEvent_Binding::DOM_VK_ALT:
sAccelModifier = MODIFIER_ALT;
break;
case dom::KeyboardEvent_Binding::DOM_VK_CONTROL:
sAccelModifier = MODIFIER_CONTROL;
break;
default:
#ifdef XP_MACOSX
sAccelModifier = MODIFIER_META;
#else
sAccelModifier = MODIFIER_CONTROL;
#endif
break;
}
}
return sAccelModifier;
}
/******************************************************************************
* mozilla::WidgetMouseEvent (MouseEvents.h)
******************************************************************************/
/* static */
bool WidgetMouseEvent::IsMiddleClickPasteEnabled() {
return Preferences::GetBool("middlemouse.paste", false);
}
/******************************************************************************
* mozilla::WidgetWheelEvent (MouseEvents.h)
******************************************************************************/
/* static */
double WidgetWheelEvent::ComputeOverriddenDelta(double aDelta,
bool aIsForVertical) {
if (!StaticPrefs::MouseWheelHasRootScrollDeltaOverride()) {
return aDelta;
}
int32_t intFactor = aIsForVertical
? StaticPrefs::MouseWheelRootScrollVerticalFactor()
: StaticPrefs::MouseWheelRootScrollHorizontalFactor();
// Making the scroll speed slower doesn't make sense. So, ignore odd factor
// which is less than 1.0.
if (intFactor <= 100) {
return aDelta;
}
double factor = static_cast<double>(intFactor) / 100;
return aDelta * factor;
}
double WidgetWheelEvent::OverriddenDeltaX() const {
if (!mAllowToOverrideSystemScrollSpeed) {
return mDeltaX;
}
return ComputeOverriddenDelta(mDeltaX, false);
}
double WidgetWheelEvent::OverriddenDeltaY() const {
if (!mAllowToOverrideSystemScrollSpeed) {
return mDeltaY;
}
return ComputeOverriddenDelta(mDeltaY, true);
}
/******************************************************************************
* mozilla::WidgetKeyboardEvent (TextEvents.h)
******************************************************************************/
#define NS_DEFINE_KEYNAME(aCPPName, aDOMKeyName) (u"" aDOMKeyName),
const char16_t* const WidgetKeyboardEvent::kKeyNames[] = {
#include "mozilla/KeyNameList.h"
};
#undef NS_DEFINE_KEYNAME
#define NS_DEFINE_PHYSICAL_KEY_CODE_NAME(aCPPName, aDOMCodeName) \
(u"" aDOMCodeName),
const char16_t* const WidgetKeyboardEvent::kCodeNames[] = {
#include "mozilla/PhysicalKeyCodeNameList.h"
};
#undef NS_DEFINE_PHYSICAL_KEY_CODE_NAME
WidgetKeyboardEvent::KeyNameIndexHashtable*
WidgetKeyboardEvent::sKeyNameIndexHashtable = nullptr;
WidgetKeyboardEvent::CodeNameIndexHashtable*
WidgetKeyboardEvent::sCodeNameIndexHashtable = nullptr;
void WidgetKeyboardEvent::InitAllEditCommands() {
// If the event was created without widget, e.g., created event in chrome
// script, this shouldn't execute native key bindings.
if (NS_WARN_IF(!mWidget)) {
return;
}
// This event should be trusted event here and we shouldn't expose native
// key binding information to web contents with untrusted events.
if (NS_WARN_IF(!IsTrusted())) {
return;
}
MOZ_ASSERT(
XRE_IsParentProcess(),
"It's too expensive to retrieve all edit commands from remote process");
MOZ_ASSERT(!AreAllEditCommandsInitialized(),
"Shouldn't be called two or more times");
InitEditCommandsFor(nsIWidget::NativeKeyBindingsForSingleLineEditor);
InitEditCommandsFor(nsIWidget::NativeKeyBindingsForMultiLineEditor);
InitEditCommandsFor(nsIWidget::NativeKeyBindingsForRichTextEditor);
}
void WidgetKeyboardEvent::InitEditCommandsFor(
nsIWidget::NativeKeyBindingsType aType) {
if (NS_WARN_IF(!mWidget) || NS_WARN_IF(!IsTrusted())) {
return;
}
bool& initialized = IsEditCommandsInitializedRef(aType);
if (initialized) {
return;
}
nsTArray<CommandInt>& commands = EditCommandsRef(aType);
mWidget->GetEditCommands(aType, *this, commands);
initialized = true;
}
bool WidgetKeyboardEvent::ExecuteEditCommands(
nsIWidget::NativeKeyBindingsType aType, DoCommandCallback aCallback,
void* aCallbackData) {
// If the event was created without widget, e.g., created event in chrome
// script, this shouldn't execute native key bindings.
if (NS_WARN_IF(!mWidget)) {
return false;
}
// This event should be trusted event here and we shouldn't expose native
// key binding information to web contents with untrusted events.
if (NS_WARN_IF(!IsTrusted())) {
return false;
}
InitEditCommandsFor(aType);
const nsTArray<CommandInt>& commands = EditCommandsRef(aType);
if (commands.IsEmpty()) {
return false;
}
for (CommandInt command : commands) {
aCallback(static_cast<Command>(command), aCallbackData);
}
return true;
}
bool WidgetKeyboardEvent::ShouldCauseKeypressEvents() const {
// Currently, we don't dispatch keypress events of modifier keys and
// dead keys.
switch (mKeyNameIndex) {
case KEY_NAME_INDEX_Alt:
case KEY_NAME_INDEX_AltGraph:
case KEY_NAME_INDEX_CapsLock:
case KEY_NAME_INDEX_Control:
case KEY_NAME_INDEX_Fn:
case KEY_NAME_INDEX_FnLock:
// case KEY_NAME_INDEX_Hyper:
case KEY_NAME_INDEX_Meta:
case KEY_NAME_INDEX_NumLock:
case KEY_NAME_INDEX_OS:
case KEY_NAME_INDEX_ScrollLock:
case KEY_NAME_INDEX_Shift:
// case KEY_NAME_INDEX_Super:
case KEY_NAME_INDEX_Symbol:
case KEY_NAME_INDEX_SymbolLock:
case KEY_NAME_INDEX_Dead:
return false;
default:
return true;
}
}
static bool HasASCIIDigit(const ShortcutKeyCandidateArray& aCandidates) {
for (uint32_t i = 0; i < aCandidates.Length(); ++i) {
uint32_t ch = aCandidates[i].mCharCode;
if (ch >= '0' && ch <= '9') return true;
}
return false;
}
static bool CharsCaseInsensitiveEqual(uint32_t aChar1, uint32_t aChar2) {
return aChar1 == aChar2 || (IS_IN_BMP(aChar1) && IS_IN_BMP(aChar2) &&
ToLowerCase(static_cast<char16_t>(aChar1)) ==
ToLowerCase(static_cast<char16_t>(aChar2)));
}
static bool IsCaseChangeableChar(uint32_t aChar) {
return IS_IN_BMP(aChar) && ToLowerCase(static_cast<char16_t>(aChar)) !=
ToUpperCase(static_cast<char16_t>(aChar));
}
void WidgetKeyboardEvent::GetShortcutKeyCandidates(
ShortcutKeyCandidateArray& aCandidates) const {
MOZ_ASSERT(aCandidates.IsEmpty(), "aCandidates must be empty");
// ShortcutKeyCandidate::mCharCode is a candidate charCode.
// ShortcutKeyCandidate::mIgnoreShift means the mCharCode should be tried to
// execute a command with/without shift key state. If this is TRUE, the
// shifted key state should be ignored. Otherwise, don't ignore the state.
// the priority of the charCodes are (shift key is not pressed):
// 0: PseudoCharCode()/false,
// 1: unshiftedCharCodes[0]/false, 2: unshiftedCharCodes[1]/false...
// the priority of the charCodes are (shift key is pressed):
// 0: PseudoCharCode()/false,
// 1: shiftedCharCodes[0]/false, 2: shiftedCharCodes[0]/true,
// 3: shiftedCharCodes[1]/false, 4: shiftedCharCodes[1]/true...
uint32_t pseudoCharCode = PseudoCharCode();
if (pseudoCharCode) {
ShortcutKeyCandidate key(pseudoCharCode, false);
aCandidates.AppendElement(key);
}
uint32_t len = mAlternativeCharCodes.Length();
if (!IsShift()) {
for (uint32_t i = 0; i < len; ++i) {
uint32_t ch = mAlternativeCharCodes[i].mUnshiftedCharCode;
if (!ch || ch == pseudoCharCode) {
continue;
}
ShortcutKeyCandidate key(ch, false);
aCandidates.AppendElement(key);
}
// If unshiftedCharCodes doesn't have numeric but shiftedCharCode has it,
// this keyboard layout is AZERTY or similar layout, probably.
// In this case, Accel+[0-9] should be accessible without shift key.
// However, the priority should be lowest.
if (!HasASCIIDigit(aCandidates)) {
for (uint32_t i = 0; i < len; ++i) {
uint32_t ch = mAlternativeCharCodes[i].mShiftedCharCode;
if (ch >= '0' && ch <= '9') {
ShortcutKeyCandidate key(ch, false);
aCandidates.AppendElement(key);
break;
}
}
}
} else {
for (uint32_t i = 0; i < len; ++i) {
uint32_t ch = mAlternativeCharCodes[i].mShiftedCharCode;
if (!ch) {
continue;
}
if (ch != pseudoCharCode) {
ShortcutKeyCandidate key(ch, false);
aCandidates.AppendElement(key);
}
// If the char is an alphabet, the shift key state should not be
// ignored. E.g., Ctrl+Shift+C should not execute Ctrl+C.
// And checking the charCode is same as unshiftedCharCode too.
// E.g., for Ctrl+Shift+(Plus of Numpad) should not run Ctrl+Plus.
uint32_t unshiftCh = mAlternativeCharCodes[i].mUnshiftedCharCode;
if (CharsCaseInsensitiveEqual(ch, unshiftCh)) {
continue;
}
// On the Hebrew keyboard layout on Windows, the unshifted char is a
// localized character but the shifted char is a Latin alphabet,
// then, we should not execute without the shift state. See bug 433192.
if (IsCaseChangeableChar(ch)) {
continue;
}
// Setting the alternative charCode candidates for retry without shift
// key state only when the shift key is pressed.
ShortcutKeyCandidate key(ch, true);
aCandidates.AppendElement(key);
}
}
// Special case for "Space" key. With some keyboard layouts, "Space" with
// or without Shift key causes non-ASCII space. For such keyboard layouts,
// we should guarantee that the key press works as an ASCII white space key
// press. However, if the space key is assigned to a function key, it
// shouldn't work as a space key.
if (mKeyNameIndex == KEY_NAME_INDEX_USE_STRING &&
mCodeNameIndex == CODE_NAME_INDEX_Space && pseudoCharCode != ' ') {
ShortcutKeyCandidate spaceKey(' ', false);
aCandidates.AppendElement(spaceKey);
}
}
void WidgetKeyboardEvent::GetAccessKeyCandidates(
nsTArray<uint32_t>& aCandidates) const {
MOZ_ASSERT(aCandidates.IsEmpty(), "aCandidates must be empty");
// return the lower cased charCode candidates for access keys.
// the priority of the charCodes are:
// 0: charCode, 1: unshiftedCharCodes[0], 2: shiftedCharCodes[0]
// 3: unshiftedCharCodes[1], 4: shiftedCharCodes[1],...
uint32_t pseudoCharCode = PseudoCharCode();
if (pseudoCharCode) {
uint32_t ch = pseudoCharCode;
if (IS_IN_BMP(ch)) {
ch = ToLowerCase(static_cast<char16_t>(ch));
}
aCandidates.AppendElement(ch);
}
for (uint32_t i = 0; i < mAlternativeCharCodes.Length(); ++i) {
uint32_t ch[2] = {mAlternativeCharCodes[i].mUnshiftedCharCode,
mAlternativeCharCodes[i].mShiftedCharCode};
for (uint32_t j = 0; j < 2; ++j) {
if (!ch[j]) {
continue;
}
if (IS_IN_BMP(ch[j])) {
ch[j] = ToLowerCase(static_cast<char16_t>(ch[j]));
}
// Don't append the charcode that was already appended.
if (aCandidates.IndexOf(ch[j]) == aCandidates.NoIndex) {
aCandidates.AppendElement(ch[j]);
}
}
}
// Special case for "Space" key. With some keyboard layouts, "Space" with
// or without Shift key causes non-ASCII space. For such keyboard layouts,
// we should guarantee that the key press works as an ASCII white space key
// press. However, if the space key is assigned to a function key, it
// shouldn't work as a space key.
if (mKeyNameIndex == KEY_NAME_INDEX_USE_STRING &&
mCodeNameIndex == CODE_NAME_INDEX_Space && pseudoCharCode != ' ') {
aCandidates.AppendElement(' ');
}
}
// mask values for ui.key.chromeAccess and ui.key.contentAccess
#define NS_MODIFIER_SHIFT 1
#define NS_MODIFIER_CONTROL 2
#define NS_MODIFIER_ALT 4
#define NS_MODIFIER_META 8
#define NS_MODIFIER_OS 16
static Modifiers PrefFlagsToModifiers(int32_t aPrefFlags) {
Modifiers result = 0;
if (aPrefFlags & NS_MODIFIER_SHIFT) {
result |= MODIFIER_SHIFT;
}
if (aPrefFlags & NS_MODIFIER_CONTROL) {
result |= MODIFIER_CONTROL;
}
if (aPrefFlags & NS_MODIFIER_ALT) {
result |= MODIFIER_ALT;
}
if (aPrefFlags & NS_MODIFIER_META) {
result |= MODIFIER_META;
}
if (aPrefFlags & NS_MODIFIER_OS) {
result |= MODIFIER_OS;
}
return result;
}
bool WidgetKeyboardEvent::ModifiersMatchWithAccessKey(
AccessKeyType aType) const {
if (!ModifiersForAccessKeyMatching()) {
return false;
}
return ModifiersForAccessKeyMatching() == AccessKeyModifiers(aType);
}
Modifiers WidgetKeyboardEvent::ModifiersForAccessKeyMatching() const {
static const Modifiers kModifierMask = MODIFIER_SHIFT | MODIFIER_CONTROL |