1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 /* This Source Code Form is subject to the terms of the Mozilla Public
3 * License, v. 2.0. If a copy of the MPL was not distributed with this
4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
5
6 #include "HTMLEditUtils.h"
7
8 #include "TextEditUtils.h" // for TextEditUtils
9 #include "mozilla/ArrayUtils.h" // for ArrayLength
10 #include "mozilla/Assertions.h" // for MOZ_ASSERT, etc.
11 #include "mozilla/EditorBase.h" // for EditorBase
12 #include "mozilla/dom/Element.h" // for Element, nsINode
13 #include "nsAString.h" // for nsAString_internal::IsEmpty
14 #include "nsCOMPtr.h" // for nsCOMPtr, operator==, etc.
15 #include "nsCaseTreatment.h"
16 #include "nsDebug.h" // for NS_PRECONDITION, etc.
17 #include "nsError.h" // for NS_SUCCEEDED
18 #include "nsGkAtoms.h" // for nsGkAtoms, nsGkAtoms::a, etc.
19 #include "nsHTMLTags.h"
20 #include "nsIAtom.h" // for nsIAtom
21 #include "nsIDOMHTMLAnchorElement.h" // for nsIDOMHTMLAnchorElement
22 #include "nsIDOMNode.h" // for nsIDOMNode
23 #include "nsNameSpaceManager.h" // for kNameSpaceID_None
24 #include "nsLiteralString.h" // for NS_LITERAL_STRING
25 #include "nsString.h" // for nsAutoString
26
27 namespace mozilla {
28
29 /**
30 * IsInlineStyle() returns true if aNode is an inline style.
31 */
32 bool
IsInlineStyle(nsIDOMNode * aNode)33 HTMLEditUtils::IsInlineStyle(nsIDOMNode* aNode)
34 {
35 MOZ_ASSERT(aNode);
36 nsCOMPtr<nsINode> node = do_QueryInterface(aNode);
37 return node && IsInlineStyle(node);
38 }
39
40 bool
IsInlineStyle(nsINode * aNode)41 HTMLEditUtils::IsInlineStyle(nsINode* aNode)
42 {
43 MOZ_ASSERT(aNode);
44 return aNode->IsAnyOfHTMLElements(nsGkAtoms::b,
45 nsGkAtoms::i,
46 nsGkAtoms::u,
47 nsGkAtoms::tt,
48 nsGkAtoms::s,
49 nsGkAtoms::strike,
50 nsGkAtoms::big,
51 nsGkAtoms::small,
52 nsGkAtoms::sub,
53 nsGkAtoms::sup,
54 nsGkAtoms::font);
55 }
56
57 /**
58 * IsFormatNode() returns true if aNode is a format node.
59 */
60 bool
IsFormatNode(nsIDOMNode * aNode)61 HTMLEditUtils::IsFormatNode(nsIDOMNode* aNode)
62 {
63 MOZ_ASSERT(aNode);
64 nsCOMPtr<nsINode> node = do_QueryInterface(aNode);
65 return node && IsFormatNode(node);
66 }
67
68 bool
IsFormatNode(nsINode * aNode)69 HTMLEditUtils::IsFormatNode(nsINode* aNode)
70 {
71 MOZ_ASSERT(aNode);
72 return aNode->IsAnyOfHTMLElements(nsGkAtoms::p,
73 nsGkAtoms::pre,
74 nsGkAtoms::h1,
75 nsGkAtoms::h2,
76 nsGkAtoms::h3,
77 nsGkAtoms::h4,
78 nsGkAtoms::h5,
79 nsGkAtoms::h6,
80 nsGkAtoms::address);
81 }
82
83 /**
84 * IsNodeThatCanOutdent() returns true if aNode is a list, list item or
85 * blockquote.
86 */
87 bool
IsNodeThatCanOutdent(nsIDOMNode * aNode)88 HTMLEditUtils::IsNodeThatCanOutdent(nsIDOMNode* aNode)
89 {
90 MOZ_ASSERT(aNode);
91 nsCOMPtr<nsIAtom> nodeAtom = EditorBase::GetTag(aNode);
92 return (nodeAtom == nsGkAtoms::ul)
93 || (nodeAtom == nsGkAtoms::ol)
94 || (nodeAtom == nsGkAtoms::dl)
95 || (nodeAtom == nsGkAtoms::li)
96 || (nodeAtom == nsGkAtoms::dd)
97 || (nodeAtom == nsGkAtoms::dt)
98 || (nodeAtom == nsGkAtoms::blockquote);
99 }
100
101 /**
102 * IsHeader() returns true if aNode is an html header.
103 */
104 bool
IsHeader(nsINode & aNode)105 HTMLEditUtils::IsHeader(nsINode& aNode)
106 {
107 return aNode.IsAnyOfHTMLElements(nsGkAtoms::h1,
108 nsGkAtoms::h2,
109 nsGkAtoms::h3,
110 nsGkAtoms::h4,
111 nsGkAtoms::h5,
112 nsGkAtoms::h6);
113 }
114
115 bool
IsHeader(nsIDOMNode * aNode)116 HTMLEditUtils::IsHeader(nsIDOMNode* aNode)
117 {
118 MOZ_ASSERT(aNode);
119 nsCOMPtr<nsINode> node = do_QueryInterface(aNode);
120 MOZ_ASSERT(node);
121 return IsHeader(*node);
122 }
123
124 /**
125 * IsParagraph() returns true if aNode is an html paragraph.
126 */
127 bool
IsParagraph(nsIDOMNode * aNode)128 HTMLEditUtils::IsParagraph(nsIDOMNode* aNode)
129 {
130 return EditorBase::NodeIsType(aNode, nsGkAtoms::p);
131 }
132
133 /**
134 * IsHR() returns true if aNode is an horizontal rule.
135 */
136 bool
IsHR(nsIDOMNode * aNode)137 HTMLEditUtils::IsHR(nsIDOMNode* aNode)
138 {
139 return EditorBase::NodeIsType(aNode, nsGkAtoms::hr);
140 }
141
142 /**
143 * IsListItem() returns true if aNode is an html list item.
144 */
145 bool
IsListItem(nsIDOMNode * aNode)146 HTMLEditUtils::IsListItem(nsIDOMNode* aNode)
147 {
148 MOZ_ASSERT(aNode);
149 nsCOMPtr<nsINode> node = do_QueryInterface(aNode);
150 return node && IsListItem(node);
151 }
152
153 bool
IsListItem(nsINode * aNode)154 HTMLEditUtils::IsListItem(nsINode* aNode)
155 {
156 MOZ_ASSERT(aNode);
157 return aNode->IsAnyOfHTMLElements(nsGkAtoms::li,
158 nsGkAtoms::dd,
159 nsGkAtoms::dt);
160 }
161
162 /**
163 * IsTableElement() returns true if aNode is an html table, td, tr, ...
164 */
165 bool
IsTableElement(nsIDOMNode * aNode)166 HTMLEditUtils::IsTableElement(nsIDOMNode* aNode)
167 {
168 MOZ_ASSERT(aNode);
169 nsCOMPtr<nsINode> node = do_QueryInterface(aNode);
170 return node && IsTableElement(node);
171 }
172
173 bool
IsTableElement(nsINode * aNode)174 HTMLEditUtils::IsTableElement(nsINode* aNode)
175 {
176 MOZ_ASSERT(aNode);
177 return aNode->IsAnyOfHTMLElements(nsGkAtoms::table,
178 nsGkAtoms::tr,
179 nsGkAtoms::td,
180 nsGkAtoms::th,
181 nsGkAtoms::thead,
182 nsGkAtoms::tfoot,
183 nsGkAtoms::tbody,
184 nsGkAtoms::caption);
185 }
186
187 /**
188 * IsTableElementButNotTable() returns true if aNode is an html td, tr, ...
189 * (doesn't include table)
190 */
191 bool
IsTableElementButNotTable(nsIDOMNode * aNode)192 HTMLEditUtils::IsTableElementButNotTable(nsIDOMNode* aNode)
193 {
194 MOZ_ASSERT(aNode);
195 nsCOMPtr<nsINode> node = do_QueryInterface(aNode);
196 return node && IsTableElementButNotTable(node);
197 }
198
199 bool
IsTableElementButNotTable(nsINode * aNode)200 HTMLEditUtils::IsTableElementButNotTable(nsINode* aNode)
201 {
202 MOZ_ASSERT(aNode);
203 return aNode->IsAnyOfHTMLElements(nsGkAtoms::tr,
204 nsGkAtoms::td,
205 nsGkAtoms::th,
206 nsGkAtoms::thead,
207 nsGkAtoms::tfoot,
208 nsGkAtoms::tbody,
209 nsGkAtoms::caption);
210 }
211
212 /**
213 * IsTable() returns true if aNode is an html table.
214 */
215 bool
IsTable(nsIDOMNode * aNode)216 HTMLEditUtils::IsTable(nsIDOMNode* aNode)
217 {
218 return EditorBase::NodeIsType(aNode, nsGkAtoms::table);
219 }
220
221 bool
IsTable(nsINode * aNode)222 HTMLEditUtils::IsTable(nsINode* aNode)
223 {
224 return aNode && aNode->IsHTMLElement(nsGkAtoms::table);
225 }
226
227 /**
228 * IsTableRow() returns true if aNode is an html tr.
229 */
230 bool
IsTableRow(nsIDOMNode * aNode)231 HTMLEditUtils::IsTableRow(nsIDOMNode* aNode)
232 {
233 return EditorBase::NodeIsType(aNode, nsGkAtoms::tr);
234 }
235
236 /**
237 * IsTableCell() returns true if aNode is an html td or th.
238 */
239 bool
IsTableCell(nsIDOMNode * aNode)240 HTMLEditUtils::IsTableCell(nsIDOMNode* aNode)
241 {
242 MOZ_ASSERT(aNode);
243 nsCOMPtr<nsINode> node = do_QueryInterface(aNode);
244 return node && IsTableCell(node);
245 }
246
247 bool
IsTableCell(nsINode * aNode)248 HTMLEditUtils::IsTableCell(nsINode* aNode)
249 {
250 MOZ_ASSERT(aNode);
251 return aNode->IsAnyOfHTMLElements(nsGkAtoms::td, nsGkAtoms::th);
252 }
253
254 /**
255 * IsTableCellOrCaption() returns true if aNode is an html td or th or caption.
256 */
257 bool
IsTableCellOrCaption(nsINode & aNode)258 HTMLEditUtils::IsTableCellOrCaption(nsINode& aNode)
259 {
260 return aNode.IsAnyOfHTMLElements(nsGkAtoms::td, nsGkAtoms::th,
261 nsGkAtoms::caption);
262 }
263
264 /**
265 * IsList() returns true if aNode is an html list.
266 */
267 bool
IsList(nsIDOMNode * aNode)268 HTMLEditUtils::IsList(nsIDOMNode* aNode)
269 {
270 MOZ_ASSERT(aNode);
271 nsCOMPtr<nsINode> node = do_QueryInterface(aNode);
272 return node && IsList(node);
273 }
274
275 bool
IsList(nsINode * aNode)276 HTMLEditUtils::IsList(nsINode* aNode)
277 {
278 MOZ_ASSERT(aNode);
279 return aNode->IsAnyOfHTMLElements(nsGkAtoms::ul,
280 nsGkAtoms::ol,
281 nsGkAtoms::dl);
282 }
283
284 /**
285 * IsOrderedList() returns true if aNode is an html ordered list.
286 */
287 bool
IsOrderedList(nsIDOMNode * aNode)288 HTMLEditUtils::IsOrderedList(nsIDOMNode* aNode)
289 {
290 return EditorBase::NodeIsType(aNode, nsGkAtoms::ol);
291 }
292
293
294 /**
295 * IsUnorderedList() returns true if aNode is an html unordered list.
296 */
297 bool
IsUnorderedList(nsIDOMNode * aNode)298 HTMLEditUtils::IsUnorderedList(nsIDOMNode* aNode)
299 {
300 return EditorBase::NodeIsType(aNode, nsGkAtoms::ul);
301 }
302
303 /**
304 * IsBlockquote() returns true if aNode is an html blockquote node.
305 */
306 bool
IsBlockquote(nsIDOMNode * aNode)307 HTMLEditUtils::IsBlockquote(nsIDOMNode* aNode)
308 {
309 return EditorBase::NodeIsType(aNode, nsGkAtoms::blockquote);
310 }
311
312 /**
313 * IsPre() returns true if aNode is an html pre node.
314 */
315 bool
IsPre(nsIDOMNode * aNode)316 HTMLEditUtils::IsPre(nsIDOMNode* aNode)
317 {
318 return EditorBase::NodeIsType(aNode, nsGkAtoms::pre);
319 }
320
321 /**
322 * IsImage() returns true if aNode is an html image node.
323 */
324 bool
IsImage(nsINode * aNode)325 HTMLEditUtils::IsImage(nsINode* aNode)
326 {
327 return aNode && aNode->IsHTMLElement(nsGkAtoms::img);
328 }
329
330 bool
IsImage(nsIDOMNode * aNode)331 HTMLEditUtils::IsImage(nsIDOMNode* aNode)
332 {
333 return EditorBase::NodeIsType(aNode, nsGkAtoms::img);
334 }
335
336 bool
IsLink(nsIDOMNode * aNode)337 HTMLEditUtils::IsLink(nsIDOMNode *aNode)
338 {
339 nsCOMPtr<nsINode> node = do_QueryInterface(aNode);
340 return node && IsLink(node);
341 }
342
343 bool
IsLink(nsINode * aNode)344 HTMLEditUtils::IsLink(nsINode* aNode)
345 {
346 MOZ_ASSERT(aNode);
347
348 nsCOMPtr<nsIDOMHTMLAnchorElement> anchor = do_QueryInterface(aNode);
349 if (anchor) {
350 nsAutoString tmpText;
351 if (NS_SUCCEEDED(anchor->GetHref(tmpText)) && !tmpText.IsEmpty()) {
352 return true;
353 }
354 }
355 return false;
356 }
357
358 bool
IsNamedAnchor(nsIDOMNode * aNode)359 HTMLEditUtils::IsNamedAnchor(nsIDOMNode *aNode)
360 {
361 nsCOMPtr<nsINode> node = do_QueryInterface(aNode);
362 return node && IsNamedAnchor(node);
363 }
364
365 bool
IsNamedAnchor(nsINode * aNode)366 HTMLEditUtils::IsNamedAnchor(nsINode* aNode)
367 {
368 MOZ_ASSERT(aNode);
369 if (!aNode->IsHTMLElement(nsGkAtoms::a)) {
370 return false;
371 }
372
373 nsAutoString text;
374 return aNode->AsElement()->GetAttr(kNameSpaceID_None, nsGkAtoms::name,
375 text) && !text.IsEmpty();
376 }
377
378 /**
379 * IsDiv() returns true if aNode is an html div node.
380 */
381 bool
IsDiv(nsIDOMNode * aNode)382 HTMLEditUtils::IsDiv(nsIDOMNode* aNode)
383 {
384 return EditorBase::NodeIsType(aNode, nsGkAtoms::div);
385 }
386
387 /**
388 * IsMozDiv() returns true if aNode is an html div node with |type = _moz|.
389 */
390 bool
IsMozDiv(nsIDOMNode * aNode)391 HTMLEditUtils::IsMozDiv(nsIDOMNode* aNode)
392 {
393 return IsDiv(aNode) && TextEditUtils::HasMozAttr(aNode);
394 }
395
396 bool
IsMozDiv(nsINode * aNode)397 HTMLEditUtils::IsMozDiv(nsINode* aNode)
398 {
399 MOZ_ASSERT(aNode);
400 return aNode->IsHTMLElement(nsGkAtoms::div) &&
401 TextEditUtils::HasMozAttr(GetAsDOMNode(aNode));
402 }
403
404 /**
405 * IsMailCite() returns true if aNode is an html blockquote with |type=cite|.
406 */
407 bool
IsMailCite(nsIDOMNode * aNode)408 HTMLEditUtils::IsMailCite(nsIDOMNode* aNode)
409 {
410 MOZ_ASSERT(aNode);
411 nsCOMPtr<nsINode> node = do_QueryInterface(aNode);
412 return node && IsMailCite(node);
413 }
414
415 bool
IsMailCite(nsINode * aNode)416 HTMLEditUtils::IsMailCite(nsINode* aNode)
417 {
418 MOZ_ASSERT(aNode);
419
420 // don't ask me why, but our html mailcites are id'd by "type=cite"...
421 if (aNode->IsElement() &&
422 aNode->AsElement()->AttrValueIs(kNameSpaceID_None, nsGkAtoms::type,
423 NS_LITERAL_STRING("cite"),
424 eIgnoreCase)) {
425 return true;
426 }
427
428 // ... but our plaintext mailcites by "_moz_quote=true". go figure.
429 if (aNode->IsElement() &&
430 aNode->AsElement()->AttrValueIs(kNameSpaceID_None, nsGkAtoms::mozquote,
431 NS_LITERAL_STRING("true"),
432 eIgnoreCase)) {
433 return true;
434 }
435
436 return false;
437 }
438
439 /**
440 * IsFormWidget() returns true if aNode is a form widget of some kind.
441 */
442 bool
IsFormWidget(nsIDOMNode * aNode)443 HTMLEditUtils::IsFormWidget(nsIDOMNode* aNode)
444 {
445 MOZ_ASSERT(aNode);
446 nsCOMPtr<nsINode> node = do_QueryInterface(aNode);
447 return node && IsFormWidget(node);
448 }
449
450 bool
IsFormWidget(nsINode * aNode)451 HTMLEditUtils::IsFormWidget(nsINode* aNode)
452 {
453 MOZ_ASSERT(aNode);
454 return aNode->IsAnyOfHTMLElements(nsGkAtoms::textarea,
455 nsGkAtoms::select,
456 nsGkAtoms::button,
457 nsGkAtoms::output,
458 nsGkAtoms::keygen,
459 nsGkAtoms::progress,
460 nsGkAtoms::meter,
461 nsGkAtoms::input);
462 }
463
464 bool
SupportsAlignAttr(nsIDOMNode * aNode)465 HTMLEditUtils::SupportsAlignAttr(nsIDOMNode* aNode)
466 {
467 MOZ_ASSERT(aNode);
468 nsCOMPtr<nsIAtom> nodeAtom = EditorBase::GetTag(aNode);
469 return (nodeAtom == nsGkAtoms::hr)
470 || (nodeAtom == nsGkAtoms::table)
471 || (nodeAtom == nsGkAtoms::tbody)
472 || (nodeAtom == nsGkAtoms::tfoot)
473 || (nodeAtom == nsGkAtoms::thead)
474 || (nodeAtom == nsGkAtoms::tr)
475 || (nodeAtom == nsGkAtoms::td)
476 || (nodeAtom == nsGkAtoms::th)
477 || (nodeAtom == nsGkAtoms::div)
478 || (nodeAtom == nsGkAtoms::p)
479 || (nodeAtom == nsGkAtoms::h1)
480 || (nodeAtom == nsGkAtoms::h2)
481 || (nodeAtom == nsGkAtoms::h3)
482 || (nodeAtom == nsGkAtoms::h4)
483 || (nodeAtom == nsGkAtoms::h5)
484 || (nodeAtom == nsGkAtoms::h6);
485 }
486
487 // We use bitmasks to test containment of elements. Elements are marked to be
488 // in certain groups by setting the mGroup member of the nsElementInfo struct
489 // to the corresponding GROUP_ values (OR'ed together). Similarly, elements are
490 // marked to allow containment of certain groups by setting the
491 // mCanContainGroups member of the nsElementInfo struct to the corresponding
492 // GROUP_ values (OR'ed together).
493 // Testing containment then simply consists of checking whether the
494 // mCanContainGroups bitmask of an element and the mGroup bitmask of a
495 // potential child overlap.
496
497 #define GROUP_NONE 0
498
499 // body, head, html
500 #define GROUP_TOPLEVEL (1 << 1)
501
502 // base, link, meta, script, style, title
503 #define GROUP_HEAD_CONTENT (1 << 2)
504
505 // b, big, i, s, small, strike, tt, u
506 #define GROUP_FONTSTYLE (1 << 3)
507
508 // abbr, acronym, cite, code, datalist, del, dfn, em, ins, kbd, mark, rb, rp
509 // rt, rtc, ruby, samp, strong, var
510 #define GROUP_PHRASE (1 << 4)
511
512 // a, applet, basefont, bdo, br, font, iframe, img, map, meter, object, output,
513 // picture, progress, q, script, span, sub, sup
514 #define GROUP_SPECIAL (1 << 5)
515
516 // button, form, input, label, select, textarea
517 #define GROUP_FORMCONTROL (1 << 6)
518
519 // address, applet, article, aside, blockquote, button, center, del, details,
520 // dir, div, dl, fieldset, figure, footer, form, h1, h2, h3, h4, h5, h6, header,
521 // hgroup, hr, iframe, ins, main, map, menu, nav, noframes, noscript, object,
522 // ol, p, pre, table, section, summary, ul
523 #define GROUP_BLOCK (1 << 7)
524
525 // frame, frameset
526 #define GROUP_FRAME (1 << 8)
527
528 // col, tbody
529 #define GROUP_TABLE_CONTENT (1 << 9)
530
531 // tr
532 #define GROUP_TBODY_CONTENT (1 << 10)
533
534 // td, th
535 #define GROUP_TR_CONTENT (1 << 11)
536
537 // col
538 #define GROUP_COLGROUP_CONTENT (1 << 12)
539
540 // param
541 #define GROUP_OBJECT_CONTENT (1 << 13)
542
543 // li
544 #define GROUP_LI (1 << 14)
545
546 // area
547 #define GROUP_MAP_CONTENT (1 << 15)
548
549 // optgroup, option
550 #define GROUP_SELECT_CONTENT (1 << 16)
551
552 // option
553 #define GROUP_OPTIONS (1 << 17)
554
555 // dd, dt
556 #define GROUP_DL_CONTENT (1 << 18)
557
558 // p
559 #define GROUP_P (1 << 19)
560
561 // text, whitespace, newline, comment
562 #define GROUP_LEAF (1 << 20)
563
564 // XXX This is because the editor does sublists illegally.
565 // ol, ul
566 #define GROUP_OL_UL (1 << 21)
567
568 // h1, h2, h3, h4, h5, h6
569 #define GROUP_HEADING (1 << 22)
570
571 // figcaption
572 #define GROUP_FIGCAPTION (1 << 23)
573
574 // picture members (img, source)
575 #define GROUP_PICTURE_CONTENT (1 << 24)
576
577 #define GROUP_INLINE_ELEMENT \
578 (GROUP_FONTSTYLE | GROUP_PHRASE | GROUP_SPECIAL | GROUP_FORMCONTROL | \
579 GROUP_LEAF)
580
581 #define GROUP_FLOW_ELEMENT (GROUP_INLINE_ELEMENT | GROUP_BLOCK)
582
583 struct ElementInfo final
584 {
585 #ifdef DEBUG
586 eHTMLTags mTag;
587 #endif
588 uint32_t mGroup;
589 uint32_t mCanContainGroups;
590 bool mIsContainer;
591 bool mCanContainSelf;
592 };
593
594 #ifdef DEBUG
595 #define ELEM(_tag, _isContainer, _canContainSelf, _group, _canContainGroups) \
596 { eHTMLTag_##_tag, _group, _canContainGroups, _isContainer, _canContainSelf }
597 #else
598 #define ELEM(_tag, _isContainer, _canContainSelf, _group, _canContainGroups) \
599 { _group, _canContainGroups, _isContainer, _canContainSelf }
600 #endif
601
602 static const ElementInfo kElements[eHTMLTag_userdefined] = {
603 ELEM(a, true, false, GROUP_SPECIAL, GROUP_INLINE_ELEMENT),
604 ELEM(abbr, true, true, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
605 ELEM(acronym, true, true, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
606 ELEM(address, true, true, GROUP_BLOCK,
607 GROUP_INLINE_ELEMENT | GROUP_P),
608 ELEM(applet, true, true, GROUP_SPECIAL | GROUP_BLOCK,
609 GROUP_FLOW_ELEMENT | GROUP_OBJECT_CONTENT),
610 ELEM(area, false, false, GROUP_MAP_CONTENT, GROUP_NONE),
611 ELEM(article, true, true, GROUP_BLOCK, GROUP_FLOW_ELEMENT),
612 ELEM(aside, true, true, GROUP_BLOCK, GROUP_FLOW_ELEMENT),
613 ELEM(audio, false, false, GROUP_NONE, GROUP_NONE),
614 ELEM(b, true, true, GROUP_FONTSTYLE, GROUP_INLINE_ELEMENT),
615 ELEM(base, false, false, GROUP_HEAD_CONTENT, GROUP_NONE),
616 ELEM(basefont, false, false, GROUP_SPECIAL, GROUP_NONE),
617 ELEM(bdo, true, true, GROUP_SPECIAL, GROUP_INLINE_ELEMENT),
618 ELEM(bgsound, false, false, GROUP_NONE, GROUP_NONE),
619 ELEM(big, true, true, GROUP_FONTSTYLE, GROUP_INLINE_ELEMENT),
620 ELEM(blockquote, true, true, GROUP_BLOCK, GROUP_FLOW_ELEMENT),
621 ELEM(body, true, true, GROUP_TOPLEVEL, GROUP_FLOW_ELEMENT),
622 ELEM(br, false, false, GROUP_SPECIAL, GROUP_NONE),
623 ELEM(button, true, true, GROUP_FORMCONTROL | GROUP_BLOCK,
624 GROUP_FLOW_ELEMENT),
625 ELEM(canvas, false, false, GROUP_NONE, GROUP_NONE),
626 ELEM(caption, true, true, GROUP_NONE, GROUP_INLINE_ELEMENT),
627 ELEM(center, true, true, GROUP_BLOCK, GROUP_FLOW_ELEMENT),
628 ELEM(cite, true, true, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
629 ELEM(code, true, true, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
630 ELEM(col, false, false, GROUP_TABLE_CONTENT | GROUP_COLGROUP_CONTENT,
631 GROUP_NONE),
632 ELEM(colgroup, true, false, GROUP_NONE, GROUP_COLGROUP_CONTENT),
633 ELEM(content, true, false, GROUP_NONE, GROUP_INLINE_ELEMENT),
634 ELEM(data, true, false, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
635 ELEM(datalist, true, false, GROUP_PHRASE,
636 GROUP_OPTIONS | GROUP_INLINE_ELEMENT),
637 ELEM(dd, true, false, GROUP_DL_CONTENT, GROUP_FLOW_ELEMENT),
638 ELEM(del, true, true, GROUP_PHRASE | GROUP_BLOCK, GROUP_FLOW_ELEMENT),
639 ELEM(details, true, true, GROUP_BLOCK, GROUP_FLOW_ELEMENT),
640 ELEM(dfn, true, true, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
641 ELEM(dir, true, false, GROUP_BLOCK, GROUP_LI),
642 ELEM(div, true, true, GROUP_BLOCK, GROUP_FLOW_ELEMENT),
643 ELEM(dl, true, false, GROUP_BLOCK, GROUP_DL_CONTENT),
644 ELEM(dt, true, true, GROUP_DL_CONTENT, GROUP_INLINE_ELEMENT),
645 ELEM(em, true, true, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
646 ELEM(embed, false, false, GROUP_NONE, GROUP_NONE),
647 ELEM(fieldset, true, true, GROUP_BLOCK, GROUP_FLOW_ELEMENT),
648 ELEM(figcaption, true, false, GROUP_FIGCAPTION, GROUP_FLOW_ELEMENT),
649 ELEM(figure, true, true, GROUP_BLOCK,
650 GROUP_FLOW_ELEMENT | GROUP_FIGCAPTION),
651 ELEM(font, true, true, GROUP_SPECIAL, GROUP_INLINE_ELEMENT),
652 ELEM(footer, true, true, GROUP_BLOCK, GROUP_FLOW_ELEMENT),
653 ELEM(form, true, true, GROUP_BLOCK, GROUP_FLOW_ELEMENT),
654 ELEM(frame, false, false, GROUP_FRAME, GROUP_NONE),
655 ELEM(frameset, true, true, GROUP_FRAME, GROUP_FRAME),
656 ELEM(h1, true, false, GROUP_BLOCK | GROUP_HEADING,
657 GROUP_INLINE_ELEMENT),
658 ELEM(h2, true, false, GROUP_BLOCK | GROUP_HEADING,
659 GROUP_INLINE_ELEMENT),
660 ELEM(h3, true, false, GROUP_BLOCK | GROUP_HEADING,
661 GROUP_INLINE_ELEMENT),
662 ELEM(h4, true, false, GROUP_BLOCK | GROUP_HEADING,
663 GROUP_INLINE_ELEMENT),
664 ELEM(h5, true, false, GROUP_BLOCK | GROUP_HEADING,
665 GROUP_INLINE_ELEMENT),
666 ELEM(h6, true, false, GROUP_BLOCK | GROUP_HEADING,
667 GROUP_INLINE_ELEMENT),
668 ELEM(head, true, false, GROUP_TOPLEVEL, GROUP_HEAD_CONTENT),
669 ELEM(header, true, true, GROUP_BLOCK, GROUP_FLOW_ELEMENT),
670 ELEM(hgroup, true, false, GROUP_BLOCK, GROUP_HEADING),
671 ELEM(hr, false, false, GROUP_BLOCK, GROUP_NONE),
672 ELEM(html, true, false, GROUP_TOPLEVEL, GROUP_TOPLEVEL),
673 ELEM(i, true, true, GROUP_FONTSTYLE, GROUP_INLINE_ELEMENT),
674 ELEM(iframe, true, true, GROUP_SPECIAL | GROUP_BLOCK,
675 GROUP_FLOW_ELEMENT),
676 ELEM(image, false, false, GROUP_NONE, GROUP_NONE),
677 ELEM(img, false, false, GROUP_SPECIAL | GROUP_PICTURE_CONTENT, GROUP_NONE),
678 ELEM(input, false, false, GROUP_FORMCONTROL, GROUP_NONE),
679 ELEM(ins, true, true, GROUP_PHRASE | GROUP_BLOCK, GROUP_FLOW_ELEMENT),
680 ELEM(kbd, true, true, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
681 ELEM(keygen, false, false, GROUP_FORMCONTROL, GROUP_NONE),
682 ELEM(label, true, false, GROUP_FORMCONTROL, GROUP_INLINE_ELEMENT),
683 ELEM(legend, true, true, GROUP_NONE, GROUP_INLINE_ELEMENT),
684 ELEM(li, true, false, GROUP_LI, GROUP_FLOW_ELEMENT),
685 ELEM(link, false, false, GROUP_HEAD_CONTENT, GROUP_NONE),
686 ELEM(listing, false, false, GROUP_NONE, GROUP_NONE),
687 ELEM(main, true, true, GROUP_BLOCK, GROUP_FLOW_ELEMENT),
688 ELEM(map, true, true, GROUP_SPECIAL, GROUP_BLOCK | GROUP_MAP_CONTENT),
689 ELEM(mark, true, true, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
690 ELEM(marquee, false, false, GROUP_NONE, GROUP_NONE),
691 ELEM(menu, true, true, GROUP_BLOCK, GROUP_LI | GROUP_FLOW_ELEMENT),
692 ELEM(menuitem, false, false, GROUP_NONE, GROUP_NONE),
693 ELEM(meta, false, false, GROUP_HEAD_CONTENT, GROUP_NONE),
694 ELEM(meter, true, false, GROUP_SPECIAL, GROUP_FLOW_ELEMENT),
695 ELEM(multicol, false, false, GROUP_NONE, GROUP_NONE),
696 ELEM(nav, true, true, GROUP_BLOCK, GROUP_FLOW_ELEMENT),
697 ELEM(nobr, false, false, GROUP_NONE, GROUP_NONE),
698 ELEM(noembed, false, false, GROUP_NONE, GROUP_NONE),
699 ELEM(noframes, true, true, GROUP_BLOCK, GROUP_FLOW_ELEMENT),
700 ELEM(noscript, true, true, GROUP_BLOCK, GROUP_FLOW_ELEMENT),
701 ELEM(object, true, true, GROUP_SPECIAL | GROUP_BLOCK,
702 GROUP_FLOW_ELEMENT | GROUP_OBJECT_CONTENT),
703 // XXX Can contain self and ul because editor does sublists illegally.
704 ELEM(ol, true, true, GROUP_BLOCK | GROUP_OL_UL,
705 GROUP_LI | GROUP_OL_UL),
706 ELEM(optgroup, true, false, GROUP_SELECT_CONTENT,
707 GROUP_OPTIONS),
708 ELEM(option, true, false,
709 GROUP_SELECT_CONTENT | GROUP_OPTIONS, GROUP_LEAF),
710 ELEM(output, true, true, GROUP_SPECIAL, GROUP_INLINE_ELEMENT),
711 ELEM(p, true, false, GROUP_BLOCK | GROUP_P, GROUP_INLINE_ELEMENT),
712 ELEM(param, false, false, GROUP_OBJECT_CONTENT, GROUP_NONE),
713 ELEM(picture, true, false, GROUP_SPECIAL, GROUP_PICTURE_CONTENT),
714 ELEM(plaintext, false, false, GROUP_NONE, GROUP_NONE),
715 ELEM(pre, true, true, GROUP_BLOCK, GROUP_INLINE_ELEMENT),
716 ELEM(progress, true, false, GROUP_SPECIAL, GROUP_FLOW_ELEMENT),
717 ELEM(q, true, true, GROUP_SPECIAL, GROUP_INLINE_ELEMENT),
718 ELEM(rb, true, true, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
719 ELEM(rp, true, true, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
720 ELEM(rt, true, true, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
721 ELEM(rtc, true, true, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
722 ELEM(ruby, true, true, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
723 ELEM(s, true, true, GROUP_FONTSTYLE, GROUP_INLINE_ELEMENT),
724 ELEM(samp, true, true, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
725 ELEM(script, true, false, GROUP_HEAD_CONTENT | GROUP_SPECIAL,
726 GROUP_LEAF),
727 ELEM(section, true, true, GROUP_BLOCK, GROUP_FLOW_ELEMENT),
728 ELEM(select, true, false, GROUP_FORMCONTROL, GROUP_SELECT_CONTENT),
729 ELEM(shadow, true, false, GROUP_NONE, GROUP_INLINE_ELEMENT),
730 ELEM(small, true, true, GROUP_FONTSTYLE, GROUP_INLINE_ELEMENT),
731 ELEM(source, false, false, GROUP_PICTURE_CONTENT, GROUP_NONE),
732 ELEM(span, true, true, GROUP_SPECIAL, GROUP_INLINE_ELEMENT),
733 ELEM(strike, true, true, GROUP_FONTSTYLE, GROUP_INLINE_ELEMENT),
734 ELEM(strong, true, true, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
735 ELEM(style, true, false, GROUP_HEAD_CONTENT, GROUP_LEAF),
736 ELEM(sub, true, true, GROUP_SPECIAL, GROUP_INLINE_ELEMENT),
737 ELEM(summary, true, true, GROUP_BLOCK, GROUP_FLOW_ELEMENT),
738 ELEM(sup, true, true, GROUP_SPECIAL, GROUP_INLINE_ELEMENT),
739 ELEM(table, true, false, GROUP_BLOCK, GROUP_TABLE_CONTENT),
740 ELEM(tbody, true, false, GROUP_TABLE_CONTENT, GROUP_TBODY_CONTENT),
741 ELEM(td, true, false, GROUP_TR_CONTENT, GROUP_FLOW_ELEMENT),
742 ELEM(textarea, true, false, GROUP_FORMCONTROL, GROUP_LEAF),
743 ELEM(tfoot, true, false, GROUP_NONE, GROUP_TBODY_CONTENT),
744 ELEM(th, true, false, GROUP_TR_CONTENT, GROUP_FLOW_ELEMENT),
745 ELEM(thead, true, false, GROUP_NONE, GROUP_TBODY_CONTENT),
746 ELEM(template, false, false, GROUP_NONE, GROUP_NONE),
747 ELEM(time, true, false, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
748 ELEM(title, true, false, GROUP_HEAD_CONTENT, GROUP_LEAF),
749 ELEM(tr, true, false, GROUP_TBODY_CONTENT, GROUP_TR_CONTENT),
750 ELEM(track, false, false, GROUP_NONE, GROUP_NONE),
751 ELEM(tt, true, true, GROUP_FONTSTYLE, GROUP_INLINE_ELEMENT),
752 ELEM(u, true, true, GROUP_FONTSTYLE, GROUP_INLINE_ELEMENT),
753 // XXX Can contain self and ol because editor does sublists illegally.
754 ELEM(ul, true, true, GROUP_BLOCK | GROUP_OL_UL,
755 GROUP_LI | GROUP_OL_UL),
756 ELEM(var, true, true, GROUP_PHRASE, GROUP_INLINE_ELEMENT),
757 ELEM(video, false, false, GROUP_NONE, GROUP_NONE),
758 ELEM(wbr, false, false, GROUP_NONE, GROUP_NONE),
759 ELEM(xmp, false, false, GROUP_NONE, GROUP_NONE),
760
761 // These aren't elements.
762 ELEM(text, false, false, GROUP_LEAF, GROUP_NONE),
763 ELEM(whitespace, false, false, GROUP_LEAF, GROUP_NONE),
764 ELEM(newline, false, false, GROUP_LEAF, GROUP_NONE),
765 ELEM(comment, false, false, GROUP_LEAF, GROUP_NONE),
766 ELEM(entity, false, false, GROUP_NONE, GROUP_NONE),
767 ELEM(doctypeDecl, false, false, GROUP_NONE, GROUP_NONE),
768 ELEM(markupDecl, false, false, GROUP_NONE, GROUP_NONE),
769 ELEM(instruction, false, false, GROUP_NONE, GROUP_NONE),
770
771 ELEM(userdefined, true, false, GROUP_NONE, GROUP_FLOW_ELEMENT)
772 };
773
774 bool
CanContain(int32_t aParent,int32_t aChild)775 HTMLEditUtils::CanContain(int32_t aParent, int32_t aChild)
776 {
777 NS_ASSERTION(aParent > eHTMLTag_unknown && aParent <= eHTMLTag_userdefined,
778 "aParent out of range!");
779 NS_ASSERTION(aChild > eHTMLTag_unknown && aChild <= eHTMLTag_userdefined,
780 "aChild out of range!");
781
782 #ifdef DEBUG
783 static bool checked = false;
784 if (!checked) {
785 checked = true;
786 int32_t i;
787 for (i = 1; i <= eHTMLTag_userdefined; ++i) {
788 NS_ASSERTION(kElements[i - 1].mTag == i,
789 "You need to update kElements (missing tags).");
790 }
791 }
792 #endif
793
794 // Special-case button.
795 if (aParent == eHTMLTag_button) {
796 static const eHTMLTags kButtonExcludeKids[] = {
797 eHTMLTag_a,
798 eHTMLTag_fieldset,
799 eHTMLTag_form,
800 eHTMLTag_iframe,
801 eHTMLTag_input,
802 eHTMLTag_select,
803 eHTMLTag_textarea
804 };
805
806 uint32_t j;
807 for (j = 0; j < ArrayLength(kButtonExcludeKids); ++j) {
808 if (kButtonExcludeKids[j] == aChild) {
809 return false;
810 }
811 }
812 }
813
814 // Deprecated elements.
815 if (aChild == eHTMLTag_bgsound) {
816 return false;
817 }
818
819 // Bug #67007, dont strip userdefined tags.
820 if (aChild == eHTMLTag_userdefined) {
821 return true;
822 }
823
824 const ElementInfo& parent = kElements[aParent - 1];
825 if (aParent == aChild) {
826 return parent.mCanContainSelf;
827 }
828
829 const ElementInfo& child = kElements[aChild - 1];
830 return (parent.mCanContainGroups & child.mGroup) != 0;
831 }
832
833 bool
IsContainer(int32_t aTag)834 HTMLEditUtils::IsContainer(int32_t aTag)
835 {
836 NS_ASSERTION(aTag > eHTMLTag_unknown && aTag <= eHTMLTag_userdefined,
837 "aTag out of range!");
838
839 return kElements[aTag - 1].mIsContainer;
840 }
841
842 } // namespace mozilla
843