summaryrefslogtreecommitdiffstats
path: root/dom/html/nsGenericHTMLElement.h
blob: 2b8b608b9d5a23f3a7e1a523d2aecb0a15859468 (plain)
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
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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/. */
#ifndef nsGenericHTMLElement_h___
#define nsGenericHTMLElement_h___

#include "mozilla/Attributes.h"
#include "mozilla/EventForwards.h"
#include "nsMappedAttributeElement.h"
#include "nsIDOMHTMLElement.h"
#include "nsNameSpaceManager.h"  // for kNameSpaceID_None
#include "nsIFormControl.h"
#include "nsGkAtoms.h"
#include "nsContentCreatorFunctions.h"
#include "mozilla/ErrorResult.h"
#include "nsIDOMHTMLMenuElement.h"
#include "mozilla/dom/DOMRect.h"
#include "mozilla/dom/ValidityState.h"
#include "mozilla/dom/ElementInlines.h"

class nsDOMTokenList;
class nsIDOMHTMLMenuElement;
class nsIEditor;
class nsIFormControlFrame;
class nsIFrame;
class nsILayoutHistoryState;
class nsIURI;
class nsPresState;
struct nsSize;

namespace mozilla {
class EventChainPostVisitor;
class EventChainPreVisitor;
class EventChainVisitor;
class EventListenerManager;
class EventStates;
namespace dom {
class HTMLFormElement;
class HTMLMenuElement;
} // namespace dom
} // namespace mozilla

typedef nsMappedAttributeElement nsGenericHTMLElementBase;

/**
 * A common superclass for HTML elements
 */
class nsGenericHTMLElement : public nsGenericHTMLElementBase,
                             public nsIDOMHTMLElement
{
public:
  using Element::SetTabIndex;
  using Element::Focus;
  explicit nsGenericHTMLElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo)
    : nsGenericHTMLElementBase(aNodeInfo)
  {
    NS_ASSERTION(mNodeInfo->NamespaceID() == kNameSpaceID_XHTML,
                 "Unexpected namespace");
    AddStatesSilently(NS_EVENT_STATE_LTR);
    SetFlags(NODE_HAS_DIRECTION_LTR);
  }

  NS_DECL_ISUPPORTS_INHERITED

  NS_IMPL_FROMCONTENT(nsGenericHTMLElement, kNameSpaceID_XHTML)

  // From Element
  nsresult CopyInnerTo(mozilla::dom::Element* aDest);

  void GetTitle(mozilla::dom::DOMString& aTitle)
  {
    GetHTMLAttr(nsGkAtoms::title, aTitle);
  }
  NS_IMETHOD SetTitle(const nsAString& aTitle) override
  {
    SetHTMLAttr(nsGkAtoms::title, aTitle);
    return NS_OK;
  }
  void GetLang(mozilla::dom::DOMString& aLang)
  {
    GetHTMLAttr(nsGkAtoms::lang, aLang);
  }
  NS_IMETHOD SetLang(const nsAString& aLang) override
  {
    SetHTMLAttr(nsGkAtoms::lang, aLang);
    return NS_OK;
  }
  void GetDir(mozilla::dom::DOMString& aDir)
  {
    GetHTMLEnumAttr(nsGkAtoms::dir, aDir);
  }
  void SetDir(const nsAString& aDir, mozilla::ErrorResult& aError)
  {
    SetHTMLAttr(nsGkAtoms::dir, aDir, aError);
  }
  bool Hidden() const
  {
    return GetBoolAttr(nsGkAtoms::hidden);
  }
  void SetHidden(bool aHidden, mozilla::ErrorResult& aError)
  {
    SetHTMLBoolAttr(nsGkAtoms::hidden, aHidden, aError);
  }
  virtual void Click();
  void GetAccessKey(nsString& aAccessKey)
  {
    GetHTMLAttr(nsGkAtoms::accesskey, aAccessKey);
  }
  void SetAccessKey(const nsAString& aAccessKey, mozilla::ErrorResult& aError)
  {
    SetHTMLAttr(nsGkAtoms::accesskey, aAccessKey, aError);
  }
  void GetAccessKeyLabel(nsString& aAccessKeyLabel);
  virtual bool Draggable() const
  {
    return AttrValueIs(kNameSpaceID_None, nsGkAtoms::draggable,
                       nsGkAtoms::_true, eIgnoreCase);
  }
  void SetDraggable(bool aDraggable, mozilla::ErrorResult& aError)
  {
    SetHTMLAttr(nsGkAtoms::draggable,
                aDraggable ? NS_LITERAL_STRING("true")
                           : NS_LITERAL_STRING("false"),
                aError);
  }
  void GetContentEditable(nsString& aContentEditable)
  {
    ContentEditableTristate value = GetContentEditableValue();
    if (value == eTrue) {
      aContentEditable.AssignLiteral("true");
    } else if (value == eFalse) {
      aContentEditable.AssignLiteral("false");
    } else {
      aContentEditable.AssignLiteral("inherit");
    }
  }
  void SetContentEditable(const nsAString& aContentEditable,
                          mozilla::ErrorResult& aError)
  {
    if (aContentEditable.LowerCaseEqualsLiteral("inherit")) {
      UnsetHTMLAttr(nsGkAtoms::contenteditable, aError);
    } else if (aContentEditable.LowerCaseEqualsLiteral("true")) {
      SetHTMLAttr(nsGkAtoms::contenteditable, NS_LITERAL_STRING("true"), aError);
    } else if (aContentEditable.LowerCaseEqualsLiteral("false")) {
      SetHTMLAttr(nsGkAtoms::contenteditable, NS_LITERAL_STRING("false"), aError);
    } else {
      aError.Throw(NS_ERROR_DOM_SYNTAX_ERR);
    }
  }
  bool IsContentEditable()
  {
    for (nsIContent* node = this; node; node = node->GetParent()) {
      nsGenericHTMLElement* element = FromContent(node);
      if (element) {
        ContentEditableTristate value = element->GetContentEditableValue();
        if (value != eInherit) {
          return value == eTrue;
        }
      }
    }
    return false;
  }

  /**
   * Returns the count of descendants (inclusive of this node) in
   * the uncomposed document that are explicitly set as editable.
   */
  uint32_t EditableInclusiveDescendantCount();

  mozilla::dom::HTMLMenuElement* GetContextMenu() const;
  bool Spellcheck();
  void SetSpellcheck(bool aSpellcheck, mozilla::ErrorResult& aError)
  {
    SetHTMLAttr(nsGkAtoms::spellcheck,
                aSpellcheck ? NS_LITERAL_STRING("true")
                            : NS_LITERAL_STRING("false"),
                aError);
  }
  bool Scrollgrab() const
  {
    return HasFlag(ELEMENT_HAS_SCROLLGRAB);
  }
  void SetScrollgrab(bool aValue)
  {
    if (aValue) {
      SetFlags(ELEMENT_HAS_SCROLLGRAB);
    } else {
      UnsetFlags(ELEMENT_HAS_SCROLLGRAB);
    }
  }

  void GetInnerText(mozilla::dom::DOMString& aValue, mozilla::ErrorResult& aError);
  void SetInnerText(const nsAString& aValue);

  /**
   * Determine whether an attribute is an event (onclick, etc.)
   * @param aName the attribute
   * @return whether the name is an event handler name
   */
  virtual bool IsEventAttributeName(nsIAtom* aName) override;

#define EVENT(name_, id_, type_, struct_) /* nothing; handled by nsINode */
// The using nsINode::Get/SetOn* are to avoid warnings about shadowing the XPCOM
// getter and setter on nsINode.
#define FORWARDED_EVENT(name_, id_, type_, struct_)                           \
  using nsINode::GetOn##name_;                                                \
  using nsINode::SetOn##name_;                                                \
  mozilla::dom::EventHandlerNonNull* GetOn##name_();                          \
  void SetOn##name_(mozilla::dom::EventHandlerNonNull* handler);
#define ERROR_EVENT(name_, id_, type_, struct_)                               \
  using nsINode::GetOn##name_;                                                \
  using nsINode::SetOn##name_;                                                \
  already_AddRefed<mozilla::dom::EventHandlerNonNull> GetOn##name_();         \
  void SetOn##name_(mozilla::dom::EventHandlerNonNull* handler);
#include "mozilla/EventNameList.h" // IWYU pragma: keep
#undef ERROR_EVENT
#undef FORWARDED_EVENT
#undef EVENT
  mozilla::dom::Element* GetOffsetParent()
  {
    mozilla::CSSIntRect rcFrame;
    return GetOffsetRect(rcFrame);
  }
  int32_t OffsetTop()
  {
    mozilla::CSSIntRect rcFrame;
    GetOffsetRect(rcFrame);

    return rcFrame.y;
  }
  int32_t OffsetLeft()
  {
    mozilla::CSSIntRect rcFrame;
    GetOffsetRect(rcFrame);

    return rcFrame.x;
  }
  int32_t OffsetWidth()
  {
    mozilla::CSSIntRect rcFrame;
    GetOffsetRect(rcFrame);

    return rcFrame.width;
  }
  int32_t OffsetHeight()
  {
    mozilla::CSSIntRect rcFrame;
    GetOffsetRect(rcFrame);

    return rcFrame.height;
  }

  // These methods are already implemented in nsIContent but we want something
  // faster for HTMLElements ignoring the namespace checking.
  // This is safe because we already know that we are in the HTML namespace.
  inline bool IsHTMLElement() const
  {
    return true;
  }

  inline bool IsHTMLElement(nsIAtom* aTag) const
  {
    return mNodeInfo->Equals(aTag);
  }

  template<typename First, typename... Args>
  inline bool IsAnyOfHTMLElements(First aFirst, Args... aArgs) const
  {
    return IsNodeInternal(aFirst, aArgs...);
  }

protected:
  virtual ~nsGenericHTMLElement() {}

public:
  /**
   * Get width and height, using given image request if attributes are unset.
   * Pass a reference to the image request, since the method may change the
   * value and we want to use the updated value.
   */
  nsSize GetWidthHeightForImage(RefPtr<imgRequestProxy>& aImageRequest);

  // XPIDL methods
  NS_FORWARD_NSIDOMNODE_TO_NSINODE

  NS_FORWARD_NSIDOMELEMENT_TO_GENERIC

  NS_IMETHOD GetTitle(nsAString& aTitle) final override {
    mozilla::dom::DOMString title;
    GetTitle(title);
    title.ToString(aTitle);
    return NS_OK;
  }
  NS_IMETHOD GetLang(nsAString& aLang) final override {
    mozilla::dom::DOMString lang;
    GetLang(lang);
    lang.ToString(aLang);
    return NS_OK;
  }
  NS_IMETHOD GetDir(nsAString& aDir) final override {
    mozilla::dom::DOMString dir;
    GetDir(dir);
    dir.ToString(aDir);
    return NS_OK;
  }
  NS_IMETHOD SetDir(const nsAString& aDir) final override {
    mozilla::ErrorResult rv;
    SetDir(aDir, rv);
    return rv.StealNSResult();
  }
  NS_IMETHOD GetDOMClassName(nsAString& aClassName) final {
    GetHTMLAttr(nsGkAtoms::_class, aClassName);
    return NS_OK;
  }
  NS_IMETHOD SetDOMClassName(const nsAString& aClassName) final {
    SetClassName(aClassName);
    return NS_OK;
  }
  NS_IMETHOD GetDataset(nsISupports** aDataset) final override;
  NS_IMETHOD GetHidden(bool* aHidden) final override {
    *aHidden = Hidden();
    return NS_OK;
  }
  NS_IMETHOD SetHidden(bool aHidden) final override {
    mozilla::ErrorResult rv;
    SetHidden(aHidden, rv);
    return rv.StealNSResult();
  }
  NS_IMETHOD DOMBlur() final override {
    mozilla::ErrorResult rv;
    Blur(rv);
    return rv.StealNSResult();
  }
  NS_IMETHOD GetAccessKey(nsAString& aAccessKey) final override {
    nsString accessKey;
    GetAccessKey(accessKey);
    aAccessKey.Assign(accessKey);
    return NS_OK;
  }
  NS_IMETHOD SetAccessKey(const nsAString& aAccessKey) final override {
    mozilla::ErrorResult rv;
    SetAccessKey(aAccessKey, rv);
    return rv.StealNSResult();
  }
  NS_IMETHOD GetAccessKeyLabel(nsAString& aAccessKeyLabel)
    final override {
    nsString accessKeyLabel;
    GetAccessKeyLabel(accessKeyLabel);
    aAccessKeyLabel.Assign(accessKeyLabel);
    return NS_OK;
  }
  NS_IMETHOD SetDraggable(bool aDraggable) final override {
    mozilla::ErrorResult rv;
    SetDraggable(aDraggable, rv);
    return rv.StealNSResult();
  }
  NS_IMETHOD GetContentEditable(nsAString& aContentEditable)
    final override {
    nsString contentEditable;
    GetContentEditable(contentEditable);
    aContentEditable.Assign(contentEditable);
    return NS_OK;
  }
  NS_IMETHOD SetContentEditable(const nsAString& aContentEditable)
    final override {
    mozilla::ErrorResult rv;
    SetContentEditable(aContentEditable, rv);
    return rv.StealNSResult();
  }
  NS_IMETHOD GetIsContentEditable(bool* aIsContentEditable)
    final override {
    *aIsContentEditable = IsContentEditable();
    return NS_OK;
  }
  NS_IMETHOD GetContextMenu(nsIDOMHTMLMenuElement** aContextMenu)
    final override;
  NS_IMETHOD GetSpellcheck(bool* aSpellcheck) final override {
    *aSpellcheck = Spellcheck();
    return NS_OK;
  }
  NS_IMETHOD SetSpellcheck(bool aSpellcheck) final override {
    mozilla::ErrorResult rv;
    SetSpellcheck(aSpellcheck, rv);
    return rv.StealNSResult();
  }
  NS_IMETHOD GetOuterHTML(nsAString& aOuterHTML) final override {
    mozilla::dom::Element::GetOuterHTML(aOuterHTML);
    return NS_OK;
  }
  NS_IMETHOD SetOuterHTML(const nsAString& aOuterHTML) final override {
    mozilla::ErrorResult rv;
    mozilla::dom::Element::SetOuterHTML(aOuterHTML, rv);
    return rv.StealNSResult();
  }
  NS_IMETHOD InsertAdjacentHTML(const nsAString& position,
                                const nsAString& text) final override;
  NS_IMETHOD GetOffsetParent(nsIDOMElement** aOffsetParent)
    final override {
    mozilla::dom::Element* offsetParent = GetOffsetParent();
    if (!offsetParent) {
      *aOffsetParent = nullptr;
      return NS_OK;
    }
    return CallQueryInterface(offsetParent, aOffsetParent);
  }
  NS_IMETHOD GetOffsetTop(int32_t* aOffsetTop) final override {
    *aOffsetTop = OffsetTop();
    return NS_OK;
  }
  NS_IMETHOD GetOffsetLeft(int32_t* aOffsetLeft) final override {
    *aOffsetLeft = OffsetLeft();
    return NS_OK;
  }
  NS_IMETHOD GetOffsetWidth(int32_t* aOffsetWidth) final override {
    *aOffsetWidth = OffsetWidth();
    return NS_OK;
  }
  NS_IMETHOD GetOffsetHeight(int32_t* aOffsetHeight) final override {
    *aOffsetHeight = OffsetHeight();
    return NS_OK;
  }
  NS_IMETHOD DOMClick() final override {
    Click();
    return NS_OK;
  }
  NS_IMETHOD GetTabIndex(int32_t* aTabIndex) final override {
    *aTabIndex = TabIndex();
    return NS_OK;
  }
  NS_IMETHOD SetTabIndex(int32_t aTabIndex) final override {
    mozilla::ErrorResult rv;
    SetTabIndex(aTabIndex, rv);
    return rv.StealNSResult();
  }
  NS_IMETHOD Focus() final override {
    mozilla::ErrorResult rv;
    Focus(rv);
    return rv.StealNSResult();
  }
  NS_IMETHOD GetDraggable(bool* aDraggable) final override {
    *aDraggable = Draggable();
    return NS_OK;
  }
  NS_IMETHOD GetInnerHTML(nsAString& aInnerHTML) override {
    return mozilla::dom::Element::GetInnerHTML(aInnerHTML);
  }
  using mozilla::dom::Element::SetInnerHTML;
  NS_IMETHOD SetInnerHTML(const nsAString& aInnerHTML) final override {
    mozilla::ErrorResult rv;
    SetInnerHTML(aInnerHTML, rv);
    return rv.StealNSResult();
  }

  using nsGenericHTMLElementBase::GetOwnerDocument;

  virtual nsIDOMNode* AsDOMNode() override { return this; }

public:
  // Implementation for nsIContent
  virtual nsresult BindToTree(nsIDocument* aDocument, nsIContent* aParent,
                              nsIContent* aBindingParent,
                              bool aCompileEventHandlers) override;
  virtual void UnbindFromTree(bool aDeep = true,
                              bool aNullParent = true) override;

  MOZ_ALWAYS_INLINE // Avoid a crashy hook from Avast 10 Beta
  nsresult SetAttr(int32_t aNameSpaceID, nsIAtom* aName,
                   const nsAString& aValue, bool aNotify)
  {
    return SetAttr(aNameSpaceID, aName, nullptr, aValue, aNotify);
  }
  virtual nsresult SetAttr(int32_t aNameSpaceID, nsIAtom* aName,
                           nsIAtom* aPrefix, const nsAString& aValue,
                           bool aNotify) override;
  virtual nsresult UnsetAttr(int32_t aNameSpaceID, nsIAtom* aName,
                             bool aNotify) override;
  virtual bool IsFocusableInternal(int32_t *aTabIndex, bool aWithMouse) override
  {
    bool isFocusable = false;
    IsHTMLFocusable(aWithMouse, &isFocusable, aTabIndex);
    return isFocusable;
  }
  /**
   * Returns true if a subclass is not allowed to override the value returned
   * in aIsFocusable.
   */
  virtual bool IsHTMLFocusable(bool aWithMouse,
                               bool *aIsFocusable,
                               int32_t *aTabIndex);
  virtual bool PerformAccesskey(bool aKeyCausesActivation,
                                bool aIsTrustedEvent) override;

  /**
   * Check if an event for an anchor can be handled
   * @return true if the event can be handled, false otherwise
   */
  bool CheckHandleEventForAnchorsPreconditions(
         mozilla::EventChainVisitor& aVisitor);
  nsresult PreHandleEventForAnchors(mozilla::EventChainPreVisitor& aVisitor);
  nsresult PostHandleEventForAnchors(mozilla::EventChainPostVisitor& aVisitor);
  bool IsHTMLLink(nsIURI** aURI) const;

  // HTML element methods
  void Compact() { mAttrsAndChildren.Compact(); }

  virtual void UpdateEditableState(bool aNotify) override;

  virtual mozilla::EventStates IntrinsicState() const override;

  // Helper for setting our editable flag and notifying
  void DoSetEditableFlag(bool aEditable, bool aNotify) {
    SetEditableFlag(aEditable);
    UpdateState(aNotify);
  }

  virtual bool ParseAttribute(int32_t aNamespaceID,
                              nsIAtom* aAttribute,
                              const nsAString& aValue,
                              nsAttrValue& aResult) override;

  bool ParseBackgroundAttribute(int32_t aNamespaceID,
                                nsIAtom* aAttribute,
                                const nsAString& aValue,
                                nsAttrValue& aResult);

  NS_IMETHOD_(bool) IsAttributeMapped(const nsIAtom* aAttribute) const override;
  virtual nsMapRuleToAttributesFunc GetAttributeMappingFunction() const override;

  /**
   * Get the base target for any links within this piece
   * of content. Generally, this is the document's base target,
   * but certain content carries a local base for backward
   * compatibility.
   *
   * @param aBaseTarget the base target [OUT]
   */
  void GetBaseTarget(nsAString& aBaseTarget) const;

  /**
   * Get the primary form control frame for this element.  Same as
   * GetPrimaryFrame(), except it QI's to nsIFormControlFrame.
   *
   * @param aFlush whether to flush out frames so that they're up to date.
   * @return the primary frame as nsIFormControlFrame
   */
  nsIFormControlFrame* GetFormControlFrame(bool aFlushFrames);

  //----------------------------------------

  /**
   * Parse an alignment attribute (top/middle/bottom/baseline)
   *
   * @param aString the string to parse
   * @param aResult the resulting HTMLValue
   * @return whether the value was parsed
   */
  static bool ParseAlignValue(const nsAString& aString,
                                nsAttrValue& aResult);

  /**
   * Parse a div align string to value (left/right/center/middle/justify)
   *
   * @param aString the string to parse
   * @param aResult the resulting HTMLValue
   * @return whether the value was parsed
   */
  static bool ParseDivAlignValue(const nsAString& aString,
                                   nsAttrValue& aResult);

  /**
   * Convert a table halign string to value (left/right/center/char/justify)
   *
   * @param aString the string to parse
   * @param aResult the resulting HTMLValue
   * @return whether the value was parsed
   */
  static bool ParseTableHAlignValue(const nsAString& aString,
                                      nsAttrValue& aResult);

  /**
   * Convert a table cell halign string to value
   *
   * @param aString the string to parse
   * @param aResult the resulting HTMLValue
   * @return whether the value was parsed
   */
  static bool ParseTableCellHAlignValue(const nsAString& aString,
                                          nsAttrValue& aResult);

  /**
   * Convert a table valign string to value (left/right/center/char/justify/
   * abscenter/absmiddle/middle)
   *
   * @param aString the string to parse
   * @param aResult the resulting HTMLValue
   * @return whether the value was parsed
   */
  static bool ParseTableVAlignValue(const nsAString& aString,
                                      nsAttrValue& aResult);

  /**
   * Convert an image attribute to value (width, height, hspace, vspace, border)
   *
   * @param aAttribute the attribute to parse
   * @param aString the string to parse
   * @param aResult the resulting HTMLValue
   * @return whether the value was parsed
   */
  static bool ParseImageAttribute(nsIAtom* aAttribute,
                                    const nsAString& aString,
                                    nsAttrValue& aResult);

  static bool ParseReferrerAttribute(const nsAString& aString,
                                     nsAttrValue& aResult);

  /**
   * Convert a frameborder string to value (yes/no/1/0)
   *
   * @param aString the string to parse
   * @param aResult the resulting HTMLValue
   * @return whether the value was parsed
   */
  static bool ParseFrameborderValue(const nsAString& aString,
                                      nsAttrValue& aResult);

  /**
   * Convert a scrolling string to value (yes/no/on/off/scroll/noscroll/auto)
   *
   * @param aString the string to parse
   * @param aResult the resulting HTMLValue
   * @return whether the value was parsed
   */
  static bool ParseScrollingValue(const nsAString& aString,
                                    nsAttrValue& aResult);

  /*
   * Attribute Mapping Helpers
   */

  /**
   * A style attribute mapping function for the most common attributes, to be
   * called by subclasses' attribute mapping functions.  Currently handles
   * dir, lang and hidden, could handle others.
   *
   * @param aAttributes the list of attributes to map
   * @param aData the returned rule data [INOUT]
   * @see GetAttributeMappingFunction
   */
  static void MapCommonAttributesInto(const nsMappedAttributes* aAttributes, 
                                      nsRuleData* aRuleData);
  /**
   * Same as MapCommonAttributesInto except that it does not handle hidden.
   *
   * @param aAttributes the list of attributes to map
   * @param aData the returned rule data [INOUT]
   * @see GetAttributeMappingFunction
   */
  static void MapCommonAttributesIntoExceptHidden(const nsMappedAttributes* aAttributes,
                                                  nsRuleData* aRuleData);

  static const MappedAttributeEntry sCommonAttributeMap[];
  static const MappedAttributeEntry sImageMarginSizeAttributeMap[];
  static const MappedAttributeEntry sImageBorderAttributeMap[];
  static const MappedAttributeEntry sImageAlignAttributeMap[];
  static const MappedAttributeEntry sDivAlignAttributeMap[];
  static const MappedAttributeEntry sBackgroundAttributeMap[];
  static const MappedAttributeEntry sBackgroundColorAttributeMap[];
  
  /**
   * Helper to map the align attribute into a style struct.
   *
   * @param aAttributes the list of attributes to map
   * @param aData the returned rule data [INOUT]
   * @see GetAttributeMappingFunction
   */
  static void MapImageAlignAttributeInto(const nsMappedAttributes* aAttributes,
                                         nsRuleData* aData);

  /**
   * Helper to map the align attribute into a style struct for things
   * like <div>, <h1>, etc.
   *
   * @param aAttributes the list of attributes to map
   * @param aData the returned rule data [INOUT]
   * @see GetAttributeMappingFunction
   */
  static void MapDivAlignAttributeInto(const nsMappedAttributes* aAttributes,
                                       nsRuleData* aData);

  /**
   * Helper to map the image border attribute into a style struct.
   *
   * @param aAttributes the list of attributes to map
   * @param aData the returned rule data [INOUT]
   * @see GetAttributeMappingFunction
   */
  static void MapImageBorderAttributeInto(const nsMappedAttributes* aAttributes,
                                          nsRuleData* aData);
  /**
   * Helper to map the image margin attribute into a style struct.
   *
   * @param aAttributes the list of attributes to map
   * @param aData the returned rule data [INOUT]
   * @see GetAttributeMappingFunction
   */
  static void MapImageMarginAttributeInto(const nsMappedAttributes* aAttributes,
                                          nsRuleData* aData);
  /**
   * Helper to map the image position attribute into a style struct.
   *
   * @param aAttributes the list of attributes to map
   * @param aData the returned rule data [INOUT]
   * @see GetAttributeMappingFunction
   */
  static void MapImageSizeAttributesInto(const nsMappedAttributes* aAttributes,
                                         nsRuleData* aData);
  /**
   * Helper to map the background attribute
   * into a style struct.
   *
   * @param aAttributes the list of attributes to map
   * @param aData the returned rule data [INOUT]
   * @see GetAttributeMappingFunction
   */
  static void MapBackgroundInto(const nsMappedAttributes* aAttributes,
                                nsRuleData* aData);
  /**
   * Helper to map the bgcolor attribute
   * into a style struct.
   *
   * @param aAttributes the list of attributes to map
   * @param aData the returned rule data [INOUT]
   * @see GetAttributeMappingFunction
   */
  static void MapBGColorInto(const nsMappedAttributes* aAttributes,
                             nsRuleData* aData);
  /**
   * Helper to map the background attributes (currently background and bgcolor)
   * into a style struct.
   *
   * @param aAttributes the list of attributes to map
   * @param aData the returned rule data [INOUT]
   * @see GetAttributeMappingFunction
   */
  static void MapBackgroundAttributesInto(const nsMappedAttributes* aAttributes,
                                          nsRuleData* aData);
  /**
   * Helper to map the scrolling attribute on FRAME and IFRAME
   * into a style struct.
   *
   * @param aAttributes the list of attributes to map
   * @param aData the returned rule data [INOUT]
   * @see GetAttributeMappingFunction
   */
  static void MapScrollingAttributeInto(const nsMappedAttributes* aAttributes,
                                        nsRuleData* aData);
  /**
   * Get the presentation context for this content node.
   * @return the presentation context
   */
  enum PresContextFor
  {
    eForComposedDoc,
    eForUncomposedDoc
  };
  nsPresContext* GetPresContext(PresContextFor aFor);

  // Form Helper Routines
  /**
   * Find an ancestor of this content node which is a form (could be null)
   * @param aCurrentForm the current form for this node.  If this is
   *        non-null, and no ancestor form is found, and the current form is in
   *        a connected subtree with the node, the current form will be
   *        returned.  This is needed to handle cases when HTML elements have a
   *        current form that they're not descendants of.
   * @note This method should not be called if the element has a form attribute.
   */
  mozilla::dom::HTMLFormElement*
  FindAncestorForm(mozilla::dom::HTMLFormElement* aCurrentForm = nullptr);

  virtual void RecompileScriptEventListeners() override;

  /**
   * See if the document being tested has nav-quirks mode enabled.
   * @param doc the document
   */
  static bool InNavQuirksMode(nsIDocument* aDoc);

  /**
   * Locate an nsIEditor rooted at this content node, if there is one.
   */
  nsresult GetEditor(nsIEditor** aEditor);

  /**
   * Helper method for NS_IMPL_URI_ATTR macro.
   * Gets the absolute URI value of an attribute, by resolving any relative
   * URIs in the attribute against the baseuri of the element. If the attribute
   * isn't a relative URI the value of the attribute is returned as is. Only
   * works for attributes in null namespace.
   *
   * @param aAttr      name of attribute.
   * @param aBaseAttr  name of base attribute.
   * @param aResult    result value [out]
   */
  void GetURIAttr(nsIAtom* aAttr, nsIAtom* aBaseAttr, nsAString& aResult) const;

  /**
   * Gets the absolute URI values of an attribute, by resolving any relative
   * URIs in the attribute against the baseuri of the element. If a substring
   * isn't a relative URI, the substring is returned as is. Only works for
   * attributes in null namespace.
   */
  bool GetURIAttr(nsIAtom* aAttr, nsIAtom* aBaseAttr, nsIURI** aURI) const;

  /**
   * Returns the current disabled state of the element.
   */
  bool IsDisabled() const {
    return HasAttr(kNameSpaceID_None, nsGkAtoms::disabled);
  }

  bool IsHidden() const
  {
    return HasAttr(kNameSpaceID_None, nsGkAtoms::hidden);
  }

  virtual bool IsLabelable() const override;

  static bool MatchLabelsElement(Element* aElement, int32_t aNamespaceID,
                                 nsIAtom* aAtom, void* aData);

  already_AddRefed<nsINodeList> Labels();

  virtual bool IsInteractiveHTMLContent(bool aIgnoreTabindex) const override;

  static bool TouchEventsEnabled(JSContext* /* unused */, JSObject* /* unused */);

  static inline bool
  CanHaveName(nsIAtom* aTag)
  {
    return aTag == nsGkAtoms::img ||
           aTag == nsGkAtoms::form ||
           aTag == nsGkAtoms::applet ||
           aTag == nsGkAtoms::embed ||
           aTag == nsGkAtoms::object;
  }
  static inline bool
  ShouldExposeNameAsHTMLDocumentProperty(Element* aElement)
  {
    return aElement->IsHTMLElement() &&
           CanHaveName(aElement->NodeInfo()->NameAtom());
  }
  static inline bool
  ShouldExposeIdAsHTMLDocumentProperty(Element* aElement)
  {
    if (aElement->IsAnyOfHTMLElements(nsGkAtoms::applet,
                                      nsGkAtoms::embed,
                                      nsGkAtoms::object)) {
      return true;
    }

    // Per spec, <img> is exposed by id only if it also has a nonempty
    // name (which doesn't have to match the id or anything).
    // HasName() is true precisely when name is nonempty.
    return aElement->IsHTMLElement(nsGkAtoms::img) && aElement->HasName();
  }

  static bool
  IsScrollGrabAllowed(JSContext*, JSObject*);

protected:
  /**
   * Add/remove this element to the documents name cache
   */
  void AddToNameTable(nsIAtom* aName) {
    NS_ASSERTION(HasName(), "Node doesn't have name?");
    nsIDocument* doc = GetUncomposedDoc();
    if (doc && !IsInAnonymousSubtree()) {
      doc->AddToNameTable(this, aName);
    }
  }
  void RemoveFromNameTable() {
    if (HasName()) {
      nsIDocument* doc = GetUncomposedDoc();
      if (doc) {
        doc->RemoveFromNameTable(this, GetParsedAttr(nsGkAtoms::name)->
                                         GetAtomValue());
      }
    }
  }

  /**
   * Register or unregister an access key to this element based on the
   * accesskey attribute.
   */
  void RegAccessKey()
  {
    if (HasFlag(NODE_HAS_ACCESSKEY)) {
      RegUnRegAccessKey(true);
    }
  }

  void UnregAccessKey()
  {
    if (HasFlag(NODE_HAS_ACCESSKEY)) {
      RegUnRegAccessKey(false);
    }
  }

private:
  void RegUnRegAccessKey(bool aDoReg);

protected:
  virtual nsresult AfterSetAttr(int32_t aNamespaceID, nsIAtom* aName,
                                const nsAttrValue* aValue, bool aNotify) override;

  virtual mozilla::EventListenerManager*
    GetEventListenerManagerForAttr(nsIAtom* aAttrName,
                                   bool* aDefer) override;

  /**
   * Dispatch a simulated mouse click by keyboard to the given element.
   */
  nsresult DispatchSimulatedClick(nsGenericHTMLElement* aElement,
                                  bool aIsTrusted,
                                  nsPresContext* aPresContext);

  /**
   * Create a URI for the given aURISpec string.
   * Returns INVALID_STATE_ERR and nulls *aURI if aURISpec is empty
   * and the document's URI matches the element's base URI.
   */
  nsresult NewURIFromString(const nsAString& aURISpec, nsIURI** aURI);

  void GetHTMLAttr(nsIAtom* aName, nsAString& aResult) const
  {
    GetAttr(kNameSpaceID_None, aName, aResult);
  }
  void GetHTMLAttr(nsIAtom* aName, mozilla::dom::DOMString& aResult) const
  {
    GetAttr(kNameSpaceID_None, aName, aResult);
  }
  void GetHTMLEnumAttr(nsIAtom* aName, nsAString& aResult) const
  {
    GetEnumAttr(aName, nullptr, aResult);
  }
  void GetHTMLURIAttr(nsIAtom* aName, nsAString& aResult) const
  {
    GetURIAttr(aName, nullptr, aResult);
  }

  void SetHTMLAttr(nsIAtom* aName, const nsAString& aValue)
  {
    SetAttr(kNameSpaceID_None, aName, aValue, true);
  }
  void SetHTMLAttr(nsIAtom* aName, const nsAString& aValue, mozilla::ErrorResult& aError)
  {
    mozilla::dom::Element::SetAttr(aName, aValue, aError);
  }
  void UnsetHTMLAttr(nsIAtom* aName, mozilla::ErrorResult& aError)
  {
    mozilla::dom::Element::UnsetAttr(aName, aError);
  }
  void SetHTMLBoolAttr(nsIAtom* aName, bool aValue, mozilla::ErrorResult& aError)
  {
    if (aValue) {
      SetHTMLAttr(aName, EmptyString(), aError);
    } else {
      UnsetHTMLAttr(aName, aError);
    }
  }
  template<typename T>
  void SetHTMLIntAttr(nsIAtom* aName, T aValue, mozilla::ErrorResult& aError)
  {
    nsAutoString value;
    value.AppendInt(aValue);

    SetHTMLAttr(aName, value, aError);
  }

  /**
   * Helper method for NS_IMPL_STRING_ATTR macro.
   * Sets the value of an attribute, returns specified default value if the
   * attribute isn't set. Only works for attributes in null namespace.
   *
   * @param aAttr    name of attribute.
   * @param aDefault default-value to return if attribute isn't set.
   * @param aResult  result value [out]
   */
  nsresult SetAttrHelper(nsIAtom* aAttr, const nsAString& aValue);

  /**
   * Helper method for NS_IMPL_INT_ATTR macro.
   * Gets the integer-value of an attribute, returns specified default value
   * if the attribute isn't set or isn't set to an integer. Only works for
   * attributes in null namespace.
   *
   * @param aAttr    name of attribute.
   * @param aDefault default-value to return if attribute isn't set.
   */
  int32_t GetIntAttr(nsIAtom* aAttr, int32_t aDefault) const;

  /**
   * Helper method for NS_IMPL_INT_ATTR macro.
   * Sets value of attribute to specified integer. Only works for attributes
   * in null namespace.
   *
   * @param aAttr    name of attribute.
   * @param aValue   Integer value of attribute.
   */
  nsresult SetIntAttr(nsIAtom* aAttr, int32_t aValue);

  /**
   * Helper method for NS_IMPL_UINT_ATTR macro.
   * Gets the unsigned integer-value of an attribute, returns specified default
   * value if the attribute isn't set or isn't set to an integer. Only works for
   * attributes in null namespace.
   *
   * @param aAttr    name of attribute.
   * @param aDefault default-value to return if attribute isn't set.
   */
  uint32_t GetUnsignedIntAttr(nsIAtom* aAttr, uint32_t aDefault) const;

  /**
   * Helper method for NS_IMPL_UINT_ATTR macro.
   * Sets value of attribute to specified unsigned integer. Only works for
   * attributes in null namespace.
   *
   * @param aAttr    name of attribute.
   * @param aValue   Integer value of attribute.
   * @param aDefault Default value (in case value is out of range).  If the spec
   *                 doesn't provide one, should be 1 if the value is limited to
   *                 nonzero values, and 0 otherwise.
   */
  void SetUnsignedIntAttr(nsIAtom* aName, uint32_t aValue, uint32_t aDefault,
                          mozilla::ErrorResult& aError)
  {
    nsAutoString value;
    if (aValue > INT32_MAX) {
      value.AppendInt(aDefault);
    } else {
      value.AppendInt(aValue);
    }

    SetHTMLAttr(aName, value, aError);
  }

  /**
   * Sets value of attribute to specified double. Only works for attributes
   * in null namespace.
   *
   * @param aAttr    name of attribute.
   * @param aValue   Double value of attribute.
   */
  void SetDoubleAttr(nsIAtom* aAttr, double aValue, mozilla::ErrorResult& aRv)
  {
    nsAutoString value;
    value.AppendFloat(aValue);

    SetHTMLAttr(aAttr, value, aRv);
  }

  /**
   * Locates the nsIEditor associated with this node.  In general this is
   * equivalent to GetEditorInternal(), but for designmode or contenteditable,
   * this may need to get an editor that's not actually on this element's
   * associated TextControlFrame.  This is used by the spellchecking routines
   * to get the editor affected by changing the spellcheck attribute on this
   * node.
   */
  virtual already_AddRefed<nsIEditor> GetAssociatedEditor();

  /**
   * Get the frame's offset information for offsetTop/Left/Width/Height.
   * Returns the parent the offset is relative to.
   * @note This method flushes pending notifications (Flush_Layout).
   * @param aRect the offset information [OUT]
   */
  mozilla::dom::Element* GetOffsetRect(mozilla::CSSIntRect& aRect);

  /**
   * Returns true if this is the current document's body element
   */
  bool IsCurrentBodyElement();

  /**
   * Ensures all editors associated with a subtree are synced, for purposes of
   * spellchecking.
   */
  static void SyncEditorsOnSubtree(nsIContent* content);

  enum ContentEditableTristate {
    eInherit = -1,
    eFalse = 0,
    eTrue = 1
  };

  /**
   * Returns eTrue if the element has a contentEditable attribute and its value
   * is "true" or an empty string. Returns eFalse if the element has a
   * contentEditable attribute and its value is "false". Otherwise returns
   * eInherit.
   */
  ContentEditableTristate GetContentEditableValue() const
  {
    static const nsIContent::AttrValuesArray values[] =
      { &nsGkAtoms::_false, &nsGkAtoms::_true, &nsGkAtoms::_empty, nullptr };

    if (!MayHaveContentEditableAttr())
      return eInherit;

    int32_t value = FindAttrValueIn(kNameSpaceID_None,
                                    nsGkAtoms::contenteditable, values,
                                    eIgnoreCase);

    return value > 0 ? eTrue : (value == 0 ? eFalse : eInherit);
  }

  // Used by A, AREA, LINK, and STYLE.
  already_AddRefed<nsIURI> GetHrefURIForAnchors() const;

  /**
   * Returns whether this element is an editable root. There are two types of
   * editable roots:
   *   1) the documentElement if the whole document is editable (for example for
   *      desginMode=on)
   *   2) an element that is marked editable with contentEditable=true and that
   *      doesn't have a parent or whose parent is not editable.
   * Note that this doesn't return input and textarea elements that haven't been
   * made editable through contentEditable or designMode.
   */
  bool IsEditableRoot() const;

private:
  void ChangeEditableState(int32_t aChange);
};

namespace mozilla {
namespace dom {
class HTMLFieldSetElement;
} // namespace dom
} // namespace mozilla

#define FORM_ELEMENT_FLAG_BIT(n_) NODE_FLAG_BIT(ELEMENT_TYPE_SPECIFIC_BITS_OFFSET + (n_))

// Form element specific bits
enum {
  // If this flag is set on an nsGenericHTMLFormElement or an HTMLImageElement,
  // that means that we have added ourselves to our mForm.  It's possible to
  // have a non-null mForm, but not have this flag set.  That happens when the
  // form is set via the content sink.
  ADDED_TO_FORM =                         FORM_ELEMENT_FLAG_BIT(0),

  // If this flag is set on an nsGenericHTMLFormElement or an HTMLImageElement,
  // that means that its form is in the process of being unbound from the tree,
  // and this form element hasn't re-found its form in
  // nsGenericHTMLFormElement::UnbindFromTree yet.
  MAYBE_ORPHAN_FORM_ELEMENT =             FORM_ELEMENT_FLAG_BIT(1)
};

// NOTE: I don't think it's possible to have the above two flags set at the
// same time, so if it becomes an issue we can probably merge them into the
// same bit.  --bz

ASSERT_NODE_FLAGS_SPACE(ELEMENT_TYPE_SPECIFIC_BITS_OFFSET + 2);

#undef FORM_ELEMENT_FLAG_BIT

/**
 * A helper class for form elements that can contain children
 */
class nsGenericHTMLFormElement : public nsGenericHTMLElement,
                                 public nsIFormControl
{
public:
  explicit nsGenericHTMLFormElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo);

  NS_DECL_ISUPPORTS_INHERITED

  nsINode* GetScopeChainParent() const override;

  virtual bool IsNodeOfType(uint32_t aFlags) const override;
  virtual void SaveSubtreeState() override;

  // nsIFormControl
  virtual mozilla::dom::HTMLFieldSetElement* GetFieldSet() override;
  virtual mozilla::dom::Element* GetFormElement() override;
  mozilla::dom::HTMLFormElement* GetForm() const
  {
    return mForm;
  }
  virtual void SetForm(nsIDOMHTMLFormElement* aForm) override;
  virtual void ClearForm(bool aRemoveFromForm) override;

  nsresult GetForm(nsIDOMHTMLFormElement** aForm);

  NS_IMETHOD SaveState() override
  {
    return NS_OK;
  }

  virtual bool RestoreState(nsPresState* aState) override
  {
    return false;
  }
  virtual bool AllowDrop() override
  {
    return true;
  }

  // nsIContent
  virtual nsresult BindToTree(nsIDocument* aDocument, nsIContent* aParent,
                              nsIContent* aBindingParent,
                              bool aCompileEventHandlers) override;
  virtual void UnbindFromTree(bool aDeep = true,
                              bool aNullParent = true) override;
  virtual IMEState GetDesiredIMEState() override;
  virtual mozilla::EventStates IntrinsicState() const override;

  virtual nsresult PreHandleEvent(
                     mozilla::EventChainPreVisitor& aVisitor) override;

  /**
   * This callback is called by a fieldest on all its elements whenever its
   * disabled attribute is changed so the element knows its disabled state
   * might have changed.
   *
   * @note Classes redefining this method should not do any content
   * state updates themselves but should just make sure to call into
   * nsGenericHTMLFormElement::FieldSetDisabledChanged.
   */
  virtual void FieldSetDisabledChanged(bool aNotify);

  void FieldSetFirstLegendChanged(bool aNotify) {
    UpdateFieldSet(aNotify);
  }

  /**
   * This callback is called by a fieldset on all it's elements when it's being
   * destroyed. When called, the elements should check that aFieldset is there
   * first parent fieldset and null mFieldset in that case only.
   *
   * @param aFieldSet The fieldset being removed.
   */
  void ForgetFieldSet(nsIContent* aFieldset);

  /**
   * Returns if the control can be disabled.
   */
  bool CanBeDisabled() const;

  virtual bool IsHTMLFocusable(bool aWithMouse, bool* aIsFocusable,
                                 int32_t* aTabIndex) override;

  virtual bool IsLabelable() const override;

protected:
  virtual ~nsGenericHTMLFormElement();

  virtual nsresult BeforeSetAttr(int32_t aNameSpaceID, nsIAtom* aName,
                                 nsAttrValueOrString* aValue,
                                 bool aNotify) override;

  virtual nsresult AfterSetAttr(int32_t aNameSpaceID, nsIAtom* aName,
                                const nsAttrValue* aValue, bool aNotify) override;

  /**
   * This method will update the form owner, using @form or looking to a parent.
   *
   * @param aBindToTree Whether the element is being attached to the tree.
   * @param aFormIdElement The element associated with the id in @form. If
   * aBindToTree is false, aFormIdElement *must* contain the element associated
   * with the id in @form. Otherwise, it *must* be null.
   *
   * @note Callers of UpdateFormOwner have to be sure the element is in a
   * document (GetUncomposedDoc() != nullptr).
   */
  void UpdateFormOwner(bool aBindToTree, Element* aFormIdElement);

  /**
   * This method will update mFieldset and set it to the first fieldset parent.
   */
  void UpdateFieldSet(bool aNotify);

  /**
   * Add a form id observer which will observe when the element with the id in
   * @form will change.
   *
   * @return The element associated with the current id in @form (may be null).
   */
  Element* AddFormIdObserver();

  /**
   * Remove the form id observer.
   */
  void RemoveFormIdObserver();

  /**
   * This method is a a callback for IDTargetObserver (from nsIDocument).
   * It will be called each time the element associated with the id in @form
   * changes.
   */
  static bool FormIdUpdated(Element* aOldElement, Element* aNewElement,
                              void* aData);

  // Returns true if the event should not be handled from PreHandleEvent
  bool IsElementDisabledForEvents(mozilla::EventMessage aMessage,
                                  nsIFrame* aFrame);

  // The focusability state of this form control.  eUnfocusable means that it
  // shouldn't be focused at all, eInactiveWindow means it's in an inactive
  // window, eActiveWindow means it's in an active window.
  enum FocusTristate {
    eUnfocusable,
    eInactiveWindow,
    eActiveWindow
  };

  // Get our focus state.  If this returns eInactiveWindow, it will set this
  // element as the focused element for that window.
  FocusTristate FocusState();

  /** The form that contains this control */
  mozilla::dom::HTMLFormElement* mForm;

  /* This is a pointer to our closest fieldset parent if any */
  mozilla::dom::HTMLFieldSetElement* mFieldSet;
};

class nsGenericHTMLFormElementWithState : public nsGenericHTMLFormElement
{
public:
  explicit nsGenericHTMLFormElementWithState(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo);

  /**
   * Get the presentation state for a piece of content, or create it if it does
   * not exist.  Generally used by SaveState().
   */
  nsPresState* GetPrimaryPresState();

  /**
   * Get the layout history object for a particular piece of content.
   *
   * @param aRead if true, won't return a layout history state if the
   *              layout history state is empty.
   * @return the history state object
   */
  already_AddRefed<nsILayoutHistoryState>
    GetLayoutHistory(bool aRead);

  /**
   * Restore the state for a form control.  Ends up calling
   * nsIFormControl::RestoreState().
   *
   * @return false if RestoreState() was not called, the return
   *         value of RestoreState() otherwise.
   */
  bool RestoreFormControlState();

  /**
   * Called when we have been cloned and adopted, and the information of the
   * node has been changed.
   */
  virtual void NodeInfoChanged() override;

protected:
  /* Generates the state key for saving the form state in the session if not
     computed already. The result is stored in mStateKey on success */
  nsresult GenerateStateKey();

  /* Used to store the key to that element in the session. Is void until
     GenerateStateKey has been used */
  nsCString mStateKey;
};

//----------------------------------------------------------------------

/**
 * This macro is similar to NS_IMPL_STRING_ATTR except that the getter method
 * falls back to an alternative method if the content attribute isn't set.
 */
#define NS_IMPL_STRING_ATTR_WITH_FALLBACK(_class, _method, _atom, _fallback) \
  NS_IMETHODIMP                                                              \
  _class::Get##_method(nsAString& aValue)                                    \
  {                                                                          \
    if (!GetAttr(kNameSpaceID_None, nsGkAtoms::_atom, aValue)) {             \
      _fallback(aValue);                                                     \
    }                                                                        \
    return NS_OK;                                                            \
  }                                                                          \
  NS_IMETHODIMP                                                              \
  _class::Set##_method(const nsAString& aValue)                              \
  {                                                                          \
    return SetAttrHelper(nsGkAtoms::_atom, aValue);                          \
  }

/**
 * A macro to implement the getter and setter for a given integer
 * valued content property. The method uses the generic GetAttr and
 * SetAttr methods.
 */
#define NS_IMPL_INT_ATTR(_class, _method, _atom)                    \
  NS_IMPL_INT_ATTR_DEFAULT_VALUE(_class, _method, _atom, 0)

#define NS_IMPL_INT_ATTR_DEFAULT_VALUE(_class, _method, _atom, _default)  \
  NS_IMETHODIMP                                                           \
  _class::Get##_method(int32_t* aValue)                                   \
  {                                                                       \
    *aValue = GetIntAttr(nsGkAtoms::_atom, _default);                     \
    return NS_OK;                                                         \
  }                                                                       \
  NS_IMETHODIMP                                                           \
  _class::Set##_method(int32_t aValue)                                    \
  {                                                                       \
    return SetIntAttr(nsGkAtoms::_atom, aValue);                          \
  }

/**
 * A macro to implement the getter and setter for a given unsigned integer
 * valued content property. The method uses GetUnsignedIntAttr and
 * SetUnsignedIntAttr methods.
 */
#define NS_IMPL_UINT_ATTR(_class, _method, _atom)                         \
  NS_IMPL_UINT_ATTR_DEFAULT_VALUE(_class, _method, _atom, 0)

#define NS_IMPL_UINT_ATTR_DEFAULT_VALUE(_class, _method, _atom, _default) \
  NS_IMETHODIMP                                                           \
  _class::Get##_method(uint32_t* aValue)                                  \
  {                                                                       \
    *aValue = GetUnsignedIntAttr(nsGkAtoms::_atom, _default);             \
    return NS_OK;                                                         \
  }                                                                       \
  NS_IMETHODIMP                                                           \
  _class::Set##_method(uint32_t aValue)                                   \
  {                                                                       \
    mozilla::ErrorResult rv;                                              \
    SetUnsignedIntAttr(nsGkAtoms::_atom, aValue, _default, rv);           \
    return rv.StealNSResult();                                            \
  }

/**
 * A macro to implement the getter and setter for a given unsigned integer
 * valued content property. The method uses GetUnsignedIntAttr and
 * SetUnsignedIntAttr methods. This macro is similar to NS_IMPL_UINT_ATTR except
 * that it throws an exception if the set value is null.
 */
#define NS_IMPL_UINT_ATTR_NON_ZERO(_class, _method, _atom)                \
  NS_IMPL_UINT_ATTR_NON_ZERO_DEFAULT_VALUE(_class, _method, _atom, 1)

#define NS_IMPL_UINT_ATTR_NON_ZERO_DEFAULT_VALUE(_class, _method, _atom, _default) \
  NS_IMETHODIMP                                                           \
  _class::Get##_method(uint32_t* aValue)                                  \
  {                                                                       \
    *aValue = GetUnsignedIntAttr(nsGkAtoms::_atom, _default);             \
    return NS_OK;                                                         \
  }                                                                       \
  NS_IMETHODIMP                                                           \
  _class::Set##_method(uint32_t aValue)                                   \
  {                                                                       \
    if (aValue == 0) {                                                    \
      return NS_ERROR_DOM_INDEX_SIZE_ERR;                                 \
    }                                                                     \
    mozilla::ErrorResult rv;                                              \
    SetUnsignedIntAttr(nsGkAtoms::_atom, aValue, _default, rv);           \
    return rv.StealNSResult();                                            \
  }

/**
 * A macro to implement the getter and setter for a given content
 * property that needs to return a URI in string form.  The method
 * uses the generic GetAttr and SetAttr methods.  This macro is much
 * like the NS_IMPL_STRING_ATTR macro, except we make sure the URI is
 * absolute.
 */
#define NS_IMPL_URI_ATTR(_class, _method, _atom)                    \
  NS_IMETHODIMP                                                     \
  _class::Get##_method(nsAString& aValue)                           \
  {                                                                 \
    GetURIAttr(nsGkAtoms::_atom, nullptr, aValue);                  \
    return NS_OK;                                                   \
  }                                                                 \
  NS_IMETHODIMP                                                     \
  _class::Set##_method(const nsAString& aValue)                     \
  {                                                                 \
    return SetAttrHelper(nsGkAtoms::_atom, aValue);               \
  }

#define NS_IMPL_URI_ATTR_WITH_BASE(_class, _method, _atom, _base_atom)       \
  NS_IMETHODIMP                                                              \
  _class::Get##_method(nsAString& aValue)                                    \
  {                                                                          \
    GetURIAttr(nsGkAtoms::_atom, nsGkAtoms::_base_atom, aValue);             \
    return NS_OK;                                                            \
  }                                                                          \
  NS_IMETHODIMP                                                              \
  _class::Set##_method(const nsAString& aValue)                              \
  {                                                                          \
    return SetAttrHelper(nsGkAtoms::_atom, aValue);                        \
  }

/**
 * A macro to implement getter and setter for action and form action content
 * attributes. It's very similar to NS_IMPL_URI_ATTR excepted that if the
 * content attribute is the empty string, the empty string is returned.
 */
#define NS_IMPL_ACTION_ATTR(_class, _method, _atom)                 \
  NS_IMETHODIMP                                                     \
  _class::Get##_method(nsAString& aValue)                           \
  {                                                                 \
    GetAttr(kNameSpaceID_None, nsGkAtoms::_atom, aValue);           \
    if (!aValue.IsEmpty()) {                                        \
      GetURIAttr(nsGkAtoms::_atom, nullptr, aValue);                 \
    }                                                               \
    return NS_OK;                                                   \
  }                                                                 \
  NS_IMETHODIMP                                                     \
  _class::Set##_method(const nsAString& aValue)                     \
  {                                                                 \
    return SetAttrHelper(nsGkAtoms::_atom, aValue);                 \
  }

/**
 * A macro to implement the getter and setter for a given content
 * property that needs to set a non-negative integer. The method
 * uses the generic GetAttr and SetAttr methods. This macro is much
 * like the NS_IMPL_INT_ATTR macro except we throw an exception if
 * the set value is negative.
 */
#define NS_IMPL_NON_NEGATIVE_INT_ATTR(_class, _method, _atom)             \
  NS_IMPL_NON_NEGATIVE_INT_ATTR_DEFAULT_VALUE(_class, _method, _atom, -1)

#define NS_IMPL_NON_NEGATIVE_INT_ATTR_DEFAULT_VALUE(_class, _method, _atom, _default)  \
  NS_IMETHODIMP                                                           \
  _class::Get##_method(int32_t* aValue)                                   \
  {                                                                       \
    *aValue = GetIntAttr(nsGkAtoms::_atom, _default);                     \
    return NS_OK;                                                         \
  }                                                                       \
  NS_IMETHODIMP                                                           \
  _class::Set##_method(int32_t aValue)                                    \
  {                                                                       \
    if (aValue < 0) {                                                     \
      return NS_ERROR_DOM_INDEX_SIZE_ERR;                                 \
    }                                                                     \
    return SetIntAttr(nsGkAtoms::_atom, aValue);                          \
  }

/**
 * A macro to implement the getter and setter for a given content
 * property that needs to set an enumerated string. The method
 * uses a specific GetEnumAttr and the generic SetAttrHelper methods.
 */
#define NS_IMPL_ENUM_ATTR_DEFAULT_VALUE(_class, _method, _atom, _default) \
  NS_IMETHODIMP                                                           \
  _class::Get##_method(nsAString& aValue)                                 \
  {                                                                       \
    GetEnumAttr(nsGkAtoms::_atom, _default, aValue);                      \
    return NS_OK;                                                         \
  }                                                                       \
  NS_IMETHODIMP                                                           \
  _class::Set##_method(const nsAString& aValue)                           \
  {                                                                       \
    return SetAttrHelper(nsGkAtoms::_atom, aValue);                       \
  }

/**
 * A macro to implement the getter and setter for a given content
 * property that needs to set an enumerated string that has different
 * default values for missing and invalid values. The method uses a
 * specific GetEnumAttr and the generic SetAttrHelper methods.
 */
#define NS_IMPL_ENUM_ATTR_DEFAULT_MISSING_INVALID_VALUES(_class, _method, _atom, _defaultMissing, _defaultInvalid) \
  NS_IMETHODIMP                                                                                   \
  _class::Get##_method(nsAString& aValue)                                                         \
  {                                                                                               \
    GetEnumAttr(nsGkAtoms::_atom, _defaultMissing, _defaultInvalid, aValue);                      \
    return NS_OK;                                                                                 \
  }                                                                                               \
  NS_IMETHODIMP                                                                                   \
  _class::Set##_method(const nsAString& aValue)                                                   \
  {                                                                                               \
    return SetAttrHelper(nsGkAtoms::_atom, aValue);                                               \
  }

#define NS_INTERFACE_MAP_ENTRY_IF_TAG(_interface, _tag)                       \
  NS_INTERFACE_MAP_ENTRY_CONDITIONAL(_interface,                              \
                                     mNodeInfo->Equals(nsGkAtoms::_tag))

namespace mozilla {
namespace dom {

typedef nsGenericHTMLElement* (*HTMLContentCreatorFunction)(
  already_AddRefed<mozilla::dom::NodeInfo>&&,
  mozilla::dom::FromParser aFromParser);

} // namespace dom
} // namespace mozilla

/**
 * A macro to declare the NS_NewHTMLXXXElement() functions.
 */
#define NS_DECLARE_NS_NEW_HTML_ELEMENT(_elementName)                       \
namespace mozilla {                                                        \
namespace dom {                                                            \
class HTML##_elementName##Element;                                         \
}                                                                          \
}                                                                          \
nsGenericHTMLElement*                                                      \
NS_NewHTML##_elementName##Element(already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo, \
                                  mozilla::dom::FromParser aFromParser = mozilla::dom::NOT_FROM_PARSER);

#define NS_DECLARE_NS_NEW_HTML_ELEMENT_AS_SHARED(_elementName)             \
inline nsGenericHTMLElement*                                               \
NS_NewHTML##_elementName##Element(already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo, \
                                  mozilla::dom::FromParser aFromParser = mozilla::dom::NOT_FROM_PARSER) \
{                                                                          \
  return NS_NewHTMLSharedElement(mozilla::Move(aNodeInfo), aFromParser);   \
}

/**
 * A macro to implement the NS_NewHTMLXXXElement() functions.
 */
#define NS_IMPL_NS_NEW_HTML_ELEMENT(_elementName)                            \
nsGenericHTMLElement*                                                        \
NS_NewHTML##_elementName##Element(already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo, \
                                  mozilla::dom::FromParser aFromParser)      \
{                                                                            \
  return new mozilla::dom::HTML##_elementName##Element(aNodeInfo);           \
}

#define NS_IMPL_NS_NEW_HTML_ELEMENT_CHECK_PARSER(_elementName)               \
nsGenericHTMLElement*                                                        \
NS_NewHTML##_elementName##Element(already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo, \
                                  mozilla::dom::FromParser aFromParser)      \
{                                                                            \
  return new mozilla::dom::HTML##_elementName##Element(aNodeInfo,            \
                                                       aFromParser);         \
}

// Here, we expand 'NS_DECLARE_NS_NEW_HTML_ELEMENT()' by hand.
// (Calling the macro directly (with no args) produces compiler warnings.)
nsGenericHTMLElement*
NS_NewHTMLElement(already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo,
                  mozilla::dom::FromParser aFromParser = mozilla::dom::NOT_FROM_PARSER);

// Distinct from the above in order to have function pointer that compared unequal
// to a function pointer to the above.
nsGenericHTMLElement*
NS_NewCustomElement(
  already_AddRefed<mozilla::dom::NodeInfo>&& aNodeInfo,
  mozilla::dom::FromParser aFromParser = mozilla::dom::NOT_FROM_PARSER);

NS_DECLARE_NS_NEW_HTML_ELEMENT(Shared)
NS_DECLARE_NS_NEW_HTML_ELEMENT(SharedList)
NS_DECLARE_NS_NEW_HTML_ELEMENT(SharedObject)

NS_DECLARE_NS_NEW_HTML_ELEMENT(Anchor)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Area)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Audio)
NS_DECLARE_NS_NEW_HTML_ELEMENT(BR)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Body)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Button)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Canvas)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Content)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Mod)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Data)
NS_DECLARE_NS_NEW_HTML_ELEMENT(DataList)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Details)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Dialog)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Div)
NS_DECLARE_NS_NEW_HTML_ELEMENT(FieldSet)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Font)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Form)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Frame)
NS_DECLARE_NS_NEW_HTML_ELEMENT(FrameSet)
NS_DECLARE_NS_NEW_HTML_ELEMENT(HR)
NS_DECLARE_NS_NEW_HTML_ELEMENT_AS_SHARED(Head)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Heading)
NS_DECLARE_NS_NEW_HTML_ELEMENT_AS_SHARED(Html)
NS_DECLARE_NS_NEW_HTML_ELEMENT(IFrame)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Image)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Input)
NS_DECLARE_NS_NEW_HTML_ELEMENT(LI)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Label)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Legend)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Link)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Map)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Menu)
NS_DECLARE_NS_NEW_HTML_ELEMENT(MenuItem)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Meta)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Meter)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Object)
NS_DECLARE_NS_NEW_HTML_ELEMENT(OptGroup)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Option)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Output)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Paragraph)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Picture)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Pre)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Progress)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Script)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Select)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Shadow)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Source)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Span)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Style)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Summary)
NS_DECLARE_NS_NEW_HTML_ELEMENT(TableCaption)
NS_DECLARE_NS_NEW_HTML_ELEMENT(TableCell)
NS_DECLARE_NS_NEW_HTML_ELEMENT(TableCol)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Table)
NS_DECLARE_NS_NEW_HTML_ELEMENT(TableRow)
NS_DECLARE_NS_NEW_HTML_ELEMENT(TableSection)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Tbody)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Template)
NS_DECLARE_NS_NEW_HTML_ELEMENT(TextArea)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Tfoot)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Thead)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Time)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Title)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Track)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Unknown)
NS_DECLARE_NS_NEW_HTML_ELEMENT(Video)

inline nsISupports*
ToSupports(nsGenericHTMLElement* aHTMLElement)
{
  return static_cast<nsIContent*>(aHTMLElement);
}

inline nsISupports*
ToCanonicalSupports(nsGenericHTMLElement* aHTMLElement)
{
  return static_cast<nsIContent*>(aHTMLElement);
}

#endif /* nsGenericHTMLElement_h___ */