parser/html/nsHtml5TreeOperation.cpp

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=2 sw=2 et tw=78: */
   3 /* ***** BEGIN LICENSE BLOCK *****
   4  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
   5  *
   6  * The contents of this file are subject to the Mozilla Public License Version
   7  * 1.1 (the "License"); you may not use this file except in compliance with
   8  * the License. You may obtain a copy of the License at
   9  * http://www.mozilla.org/MPL/
  10  *
  11  * Software distributed under the License is distributed on an "AS IS" basis,
  12  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  13  * for the specific language governing rights and limitations under the
  14  * License.
  15  *
  16  * The Original Code is Mozilla Communicator client code.
  17  *
  18  * The Initial Developer of the Original Code is
  19  * Netscape Communications Corporation.
  20  * Portions created by the Initial Developer are Copyright (C) 1998
  21  * the Initial Developer. All Rights Reserved.
  22  *
  23  * Contributor(s):
  24  *   Pierre Phaneuf <pp@ludusdesign.com>
  25  *   Henri Sivonen <hsivonen@iki.fi>
  26  *
  27  * Alternatively, the contents of this file may be used under the terms of
  28  * either of the GNU General Public License Version 2 or later (the "GPL"),
  29  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
  30  * in which case the provisions of the GPL or the LGPL are applicable instead
  31  * of those above. If you wish to allow use of your version of this file only
  32  * under the terms of either the GPL or the LGPL, and not to allow others to
  33  * use your version of this file under the terms of the MPL, indicate your
  34  * decision by deleting the provisions above and replace them with the notice
  35  * and other provisions required by the GPL or the LGPL. If you do not delete
  36  * the provisions above, a recipient may use your version of this file under
  37  * the terms of any one of the MPL, the GPL or the LGPL.
  38  *
  39  * ***** END LICENSE BLOCK ***** */
  40
  41 #include "nsHtml5TreeOperation.h"
  42 #include "nsContentUtils.h"
  43 #include "nsNodeUtils.h"
  44 #include "nsAttrName.h"
  45 #include "nsHtml5TreeBuilder.h"
  46 #include "nsIDOMMutationEvent.h"
  47 #include "mozAutoDocUpdate.h"
  48 #include "nsBindingManager.h"
  49 #include "nsXBLBinding.h"
  50 #include "nsHtml5DocumentMode.h"
  51 #include "nsHtml5HtmlAttributes.h"
  52 #include "nsContentCreatorFunctions.h"
  53 #include "nsIScriptElement.h"
  54 #include "nsIDTD.h"
  55 #include "nsTraceRefcnt.h"
  56 #include "nsIDOMHTMLFormElement.h"
  57 #include "nsIFormControl.h"
  58 #include "nsIStyleSheetLinkingElement.h"
  59 #include "nsIDOMDocumentType.h"
  60 #include "nsIObserverService.h"
  61 #include "mozilla/Services.h"
  62 #include "nsIMutationObserver.h"
  63 #include "nsIFormProcessor.h"
  64 #include "nsIServiceManager.h"
  65 #include "nsEscape.h"
  66 #include "mozilla/dom/Element.h"
  67
  68 #ifdef MOZ_SVG
  69 #include "nsHtml5SVGLoadDispatcher.h"
  70 #endif
  71
  72 namespace dom = mozilla::dom;
  73
  74 static NS_DEFINE_CID(kFormProcessorCID, NS_FORMPROCESSOR_CID);
  75
  76 /**
  77  * Helper class that opens a notification batch if the current doc
  78  * is different from the executor doc.
  79  */
  80 class NS_STACK_CLASS nsHtml5OtherDocUpdate {
  81   public:
  82     nsHtml5OtherDocUpdate(nsIDocument* aCurrentDoc, nsIDocument* aExecutorDoc)
  83     {
  84       NS_PRECONDITION(aCurrentDoc, "Node has no doc?");
  85       NS_PRECONDITION(aExecutorDoc, "Executor has no doc?");
  86       if (NS_LIKELY(aCurrentDoc == aExecutorDoc)) {
  87         mDocument = nsnull;
  88       } else {
  89         mDocument = aCurrentDoc;
  90         aCurrentDoc->BeginUpdate(UPDATE_CONTENT_MODEL);
  91       }
  92     }
  93
  94     ~nsHtml5OtherDocUpdate()
  95     {
  96       if (NS_UNLIKELY(mDocument)) {
  97         mDocument->EndUpdate(UPDATE_CONTENT_MODEL);
  98       }
  99     }
 100   private:
 101     nsIDocument* mDocument;
 102 };
 103
 104 nsHtml5TreeOperation::nsHtml5TreeOperation()
 105 #ifdef DEBUG
 106  : mOpCode(eTreeOpUninitialized)
 107 #endif
 108 {
 109   MOZ_COUNT_CTOR(nsHtml5TreeOperation);
 110 }
 111
 112 nsHtml5TreeOperation::~nsHtml5TreeOperation()
 113 {
 114   MOZ_COUNT_DTOR(nsHtml5TreeOperation);
 115   NS_ASSERTION(mOpCode != eTreeOpUninitialized, "Uninitialized tree op.");
 116   switch(mOpCode) {
 117     case eTreeOpAddAttributes:
 118       delete mTwo.attributes;
 119       break;
 120     case eTreeOpCreateElementNetwork:
 121     case eTreeOpCreateElementNotNetwork:
 122       delete mThree.attributes;
 123       break;
 124     case eTreeOpAppendDoctypeToDocument:
 125       delete mTwo.stringPair;
 126       break;
 127     case eTreeOpFosterParentText:
 128     case eTreeOpAppendText:
 129     case eTreeOpAppendComment:
 130     case eTreeOpAppendCommentToDocument:
 131       delete[] mTwo.unicharPtr;
 132       break;
 133     case eTreeOpSetDocumentCharset:
 134     case eTreeOpNeedsCharsetSwitchTo:
 135       delete[] mOne.charPtr;
 136       break;
 137     case eTreeOpProcessOfflineManifest:
 138       nsMemory::Free(mOne.unicharPtr);
 139       break;
 140     default: // keep the compiler happy
 141       break;
 142   }
 143 }
 144
 145 nsresult
 146 nsHtml5TreeOperation::AppendTextToTextNode(const PRUnichar* aBuffer,
 147                                            PRInt32 aLength,
 148                                            nsIContent* aTextNode,
 149                                            nsHtml5TreeOpExecutor* aBuilder)
 150 {
 151   NS_PRECONDITION(aTextNode, "Got null text node.");
 152
 153   if (aBuilder->HaveNotified(aTextNode)) {
 154     // This text node has already been notified on, so it's necessary to
 155     // notify on the append
 156     nsresult rv = NS_OK;
 157     PRUint32 oldLength = aTextNode->TextLength();
 158     CharacterDataChangeInfo info = {
 159       PR_TRUE,
 160       oldLength,
 161       oldLength,
 162       aLength
 163     };
 164     nsNodeUtils::CharacterDataWillChange(aTextNode, &info);
 165
 166     rv = aTextNode->AppendText(aBuffer, aLength, PR_FALSE);
 167     NS_ENSURE_SUCCESS(rv, rv);
 168
 169     nsNodeUtils::CharacterDataChanged(aTextNode, &info);
 170     return rv;
 171   }
 172
 173   return aTextNode->AppendText(aBuffer, aLength, PR_FALSE);
 174 }
 175
 176
 177 nsresult
 178 nsHtml5TreeOperation::AppendText(const PRUnichar* aBuffer,
 179                                  PRInt32 aLength,
 180                                  nsIContent* aParent,
 181                                  nsHtml5TreeOpExecutor* aBuilder)
 182 {
 183   nsresult rv = NS_OK;
 184   nsIContent* lastChild = aParent->GetLastChild();
 185   if (lastChild && lastChild->IsNodeOfType(nsINode::eTEXT)) {
 186     nsHtml5OtherDocUpdate update(aParent->GetOwnerDoc(),
 187                                  aBuilder->GetDocument());
 188     return AppendTextToTextNode(aBuffer,
 189                                 aLength,
 190                                 lastChild,
 191                                 aBuilder);
 192   }
 193
 194   nsCOMPtr<nsIContent> text;
 195   NS_NewTextNode(getter_AddRefs(text), aBuilder->GetNodeInfoManager());
 196   NS_ASSERTION(text, "Infallible malloc failed?");
 197   rv = text->SetText(aBuffer, aLength, PR_FALSE);
 198   NS_ENSURE_SUCCESS(rv, rv);
 199
 200   return Append(text, aParent, aBuilder);
 201 }
 202
 203 nsresult
 204 nsHtml5TreeOperation::Append(nsIContent* aNode,
 205                              nsIContent* aParent,
 206                              nsHtml5TreeOpExecutor* aBuilder)
 207 {
 208   nsresult rv = NS_OK;
 209   nsIDocument* executorDoc = aBuilder->GetDocument();
 210   NS_ASSERTION(executorDoc, "Null doc on executor");
 211   nsIDocument* parentDoc = aParent->GetOwnerDoc();
 212   NS_ASSERTION(parentDoc, "Null owner doc on old node.");
 213
 214   if (NS_LIKELY(executorDoc == parentDoc)) {
 215     // the usual case. the parent is in the parser's doc
 216     aBuilder->PostPendingAppendNotification(aParent, aNode);
 217     rv = aParent->AppendChildTo(aNode, PR_FALSE);
 218     return rv;
 219   }
 220
 221   // The parent has been moved to another doc
 222   parentDoc->BeginUpdate(UPDATE_CONTENT_MODEL);
 223
 224   PRUint32 childCount = aParent->GetChildCount();
 225   rv = aParent->AppendChildTo(aNode, PR_FALSE);
 226   nsNodeUtils::ContentAppended(aParent, aNode, childCount);
 227
 228   parentDoc->EndUpdate(UPDATE_CONTENT_MODEL);
 229   return rv;
 230 }
 231
 232 class nsDocElementCreatedNotificationRunner : public nsRunnable
 233 {
 234 public:
 235   nsDocElementCreatedNotificationRunner(nsIDocument* aDoc)
 236     : mDoc(aDoc)
 237   {
 238   }
 239
 240   NS_IMETHOD Run()
 241   {
 242     nsContentSink::NotifyDocElementCreated(mDoc);
 243     return NS_OK;
 244   }
 245
 246   nsCOMPtr<nsIDocument> mDoc;
 247 };
 248
 249 nsresult
 250 nsHtml5TreeOperation::AppendToDocument(nsIContent* aNode,
 251                                        nsHtml5TreeOpExecutor* aBuilder)
 252 {
 253   nsresult rv = NS_OK;
 254   aBuilder->FlushPendingAppendNotifications();
 255   nsIDocument* doc = aBuilder->GetDocument();
 256   PRUint32 childCount = doc->GetChildCount();
 257   rv = doc->AppendChildTo(aNode, PR_FALSE);
 258   NS_ENSURE_SUCCESS(rv, rv);
 259   nsNodeUtils::ContentInserted(doc, aNode, childCount);
 260
 261   NS_ASSERTION(!nsContentUtils::IsSafeToRunScript(),
 262                "Someone forgot to block scripts");
 263   nsContentUtils::AddScriptRunner(
 264     new nsDocElementCreatedNotificationRunner(doc));
 265
 266   return rv;
 267 }
 268
 269 nsresult
 270 nsHtml5TreeOperation::Perform(nsHtml5TreeOpExecutor* aBuilder,
 271                               nsIContent** aScriptElement)
 272 {
 273   nsresult rv = NS_OK;
 274   switch(mOpCode) {
 275     case eTreeOpAppend: {
 276       nsIContent* node = *(mOne.node);
 277       nsIContent* parent = *(mTwo.node);
 278       return Append(node, parent, aBuilder);
 279     }
 280     case eTreeOpDetach: {
 281       nsIContent* node = *(mOne.node);
 282       aBuilder->FlushPendingAppendNotifications();
 283       nsIContent* parent = node->GetParent();
 284       if (parent) {
 285         nsHtml5OtherDocUpdate update(parent->GetOwnerDoc(),
 286                                      aBuilder->GetDocument());
 287         PRUint32 pos = parent->IndexOf(node);
 288         NS_ASSERTION((pos >= 0), "Element not found as child of its parent");
 289         rv = parent->RemoveChildAt(pos, PR_TRUE, PR_FALSE);
 290         NS_ENSURE_SUCCESS(rv, rv);
 291       }
 292       return rv;
 293     }
 294     case eTreeOpAppendChildrenToNewParent: {
 295       nsIContent* node = *(mOne.node);
 296       nsIContent* parent = *(mTwo.node);
 297       aBuilder->FlushPendingAppendNotifications();
 298
 299       nsHtml5OtherDocUpdate update(parent->GetOwnerDoc(),
 300                                    aBuilder->GetDocument());
 301
 302       PRUint32 childCount = parent->GetChildCount();
 303       PRBool didAppend = PR_FALSE;
 304       while (node->GetChildCount()) {
 305         nsCOMPtr<nsIContent> child = node->GetChildAt(0);
 306         rv = node->RemoveChildAt(0, PR_TRUE, PR_FALSE);
 307         NS_ENSURE_SUCCESS(rv, rv);
 308         rv = parent->AppendChildTo(child, PR_FALSE);
 309         NS_ENSURE_SUCCESS(rv, rv);
 310         didAppend = PR_TRUE;
 311       }
 312       if (didAppend) {
 313         nsNodeUtils::ContentAppended(parent, parent->GetChildAt(childCount),
 314                                      childCount);
 315       }
 316       return rv;
 317     }
 318     case eTreeOpFosterParent: {
 319       nsIContent* node = *(mOne.node);
 320       nsIContent* parent = *(mTwo.node);
 321       nsIContent* table = *(mThree.node);
 322       nsIContent* foster = table->GetParent();
 323
 324       if (foster && foster->IsElement()) {
 325         aBuilder->FlushPendingAppendNotifications();
 326
 327         nsHtml5OtherDocUpdate update(foster->GetOwnerDoc(),
 328                                      aBuilder->GetDocument());
 329
 330         PRUint32 pos = foster->IndexOf(table);
 331         rv = foster->InsertChildAt(node, pos, PR_FALSE);
 332         NS_ENSURE_SUCCESS(rv, rv);
 333         nsNodeUtils::ContentInserted(foster, node, pos);
 334         return rv;
 335       }
 336
 337       return Append(node, parent, aBuilder);
 338     }
 339     case eTreeOpAppendToDocument: {
 340       nsIContent* node = *(mOne.node);
 341       return AppendToDocument(node, aBuilder);
 342     }
 343     case eTreeOpAddAttributes: {
 344       dom::Element* node = (*(mOne.node))->AsElement();
 345       nsHtml5HtmlAttributes* attributes = mTwo.attributes;
 346
 347       nsHtml5OtherDocUpdate update(node->GetOwnerDoc(),
 348                                    aBuilder->GetDocument());
 349
 350       nsIDocument* document = node->GetCurrentDoc();
 351
 352       PRInt32 len = attributes->getLength();
 353       for (PRInt32 i = len; i > 0;) {
 354         --i;
 355         // prefix doesn't need regetting. it is always null or a static atom
 356         // local name is never null
 357         nsCOMPtr<nsIAtom> localName = Reget(attributes->getLocalName(i));
 358         PRInt32 nsuri = attributes->getURI(i);
 359         if (!node->HasAttr(nsuri, localName)) {
 360
 361           // the manual notification code is based on nsGenericElement
 362
 363           nsEventStates stateMask = node->IntrinsicState();
 364           nsNodeUtils::AttributeWillChange(node,
 365                                            nsuri,
 366                                            localName,
 367                                            static_cast<PRUint8>(nsIDOMMutationEvent::ADDITION));
 368
 369           // prefix doesn't need regetting. it is always null or a static atom
 370           // local name is never null
 371           node->SetAttr(nsuri, localName, attributes->getPrefix(i), *(attributes->getValue(i)), PR_FALSE);
 372           // XXX what to do with nsresult?
 373
 374           if (document || node->HasFlag(NODE_FORCE_XBL_BINDINGS)) {
 375             nsIDocument* ownerDoc = node->GetOwnerDoc();
 376             if (ownerDoc) {
 377               nsRefPtr<nsXBLBinding> binding =
 378                 ownerDoc->BindingManager()->GetBinding(node);
 379               if (binding) {
 380                 binding->AttributeChanged(localName, nsuri, PR_FALSE, PR_FALSE);
 381               }
 382             }
 383           }
 384
 385           stateMask ^= node->IntrinsicState();
 386           if (!stateMask.IsEmpty() && document) {
 387             MOZ_AUTO_DOC_UPDATE(document, UPDATE_CONTENT_STATE, PR_TRUE);
 388             document->ContentStatesChanged(node, nsnull, stateMask);
 389           }
 390           nsNodeUtils::AttributeChanged(node,
 391                                         nsuri,
 392                                         localName,
 393                                         static_cast<PRUint8>(nsIDOMMutationEvent::ADDITION));
 394         }
 395       }
 396
 397       return rv;
 398     }
 399     case eTreeOpCreateElementNetwork:
 400     case eTreeOpCreateElementNotNetwork: {
 401       nsIContent** target = mOne.node;
 402       PRInt32 ns = mInt;
 403       nsCOMPtr<nsIAtom> name = Reget(mTwo.atom);
 404       nsHtml5HtmlAttributes* attributes = mThree.attributes;
 405
 406       PRBool isKeygen = (name == nsHtml5Atoms::keygen && ns == kNameSpaceID_XHTML);
 407       if (NS_UNLIKELY(isKeygen)) {
 408         name = nsHtml5Atoms::select;
 409       }
 410
 411       nsCOMPtr<nsIContent> newContent;
 412       nsCOMPtr<nsINodeInfo> nodeInfo = aBuilder->GetNodeInfoManager()->GetNodeInfo(name, nsnull, ns);
 413       NS_ASSERTION(nodeInfo, "Got null nodeinfo.");
 414       NS_NewElement(getter_AddRefs(newContent),
 415                     ns, nodeInfo.forget(),
 416                     (mOpCode == eTreeOpCreateElementNetwork ?
 417                      dom::FROM_PARSER_NETWORK
 418                      : (aBuilder->IsFragmentMode() ?
 419                         dom::FROM_PARSER_FRAGMENT :
 420                         dom::FROM_PARSER_DOCUMENT_WRITE)));
 421       NS_ASSERTION(newContent, "Element creation created null pointer.");
 422
 423       aBuilder->HoldElement(*target = newContent);
 424
 425       if (NS_UNLIKELY(name == nsHtml5Atoms::style || name == nsHtml5Atoms::link)) {
 426         nsCOMPtr<nsIStyleSheetLinkingElement> ssle(do_QueryInterface(newContent));
 427         if (ssle) {
 428           ssle->InitStyleLinkElement(PR_FALSE);
 429           ssle->SetEnableUpdates(PR_FALSE);
 430         }
 431       } else if (NS_UNLIKELY(isKeygen)) {
 432         // Adapted from CNavDTD
 433         nsCOMPtr<nsIFormProcessor> theFormProcessor =
 434           do_GetService(kFormProcessorCID, &rv);
 435         NS_ENSURE_SUCCESS(rv, rv);
 436
 437         nsTArray<nsString> theContent;
 438         nsAutoString theAttribute;
 439
 440         (void) theFormProcessor->ProvideContent(NS_LITERAL_STRING("select"),
 441                                                 theContent,
 442                                                 theAttribute);
 443
 444         newContent->SetAttr(kNameSpaceID_None,
 445                             nsGkAtoms::moztype,
 446                             nsnull,
 447                             theAttribute,
 448                             PR_FALSE);
 449
 450         nsCOMPtr<nsINodeInfo> optionNodeInfo =
 451           aBuilder->GetNodeInfoManager()->GetNodeInfo(nsHtml5Atoms::option,
 452                                                       nsnull,
 453                                                       kNameSpaceID_XHTML);
 454
 455         for (PRUint32 i = 0; i < theContent.Length(); ++i) {
 456           nsCOMPtr<nsIContent> optionElt;
 457           nsCOMPtr<nsINodeInfo> ni = optionNodeInfo;
 458           NS_NewElement(getter_AddRefs(optionElt),
 459                         optionNodeInfo->NamespaceID(),
 460                         ni.forget(),
 461                         (mOpCode == eTreeOpCreateElementNetwork ?
 462                          dom::FROM_PARSER_NETWORK
 463                          : (aBuilder->IsFragmentMode() ?
 464                             dom::FROM_PARSER_FRAGMENT :
 465                             dom::FROM_PARSER_DOCUMENT_WRITE)));
 466           nsCOMPtr<nsIContent> optionText;
 467           NS_NewTextNode(getter_AddRefs(optionText),
 468                          aBuilder->GetNodeInfoManager());
 469           (void) optionText->SetText(theContent[i], PR_FALSE);
 470           optionElt->AppendChildTo(optionText, PR_FALSE);
 471           newContent->AppendChildTo(optionElt, PR_FALSE);
 472           newContent->DoneAddingChildren(PR_FALSE);
 473         }
 474       } else if (name == nsHtml5Atoms::frameset && ns == kNameSpaceID_XHTML) {
 475         nsIDocument* doc = aBuilder->GetDocument();
 476         nsCOMPtr<nsIHTMLDocument> htmlDocument = do_QueryInterface(doc);
 477         if (htmlDocument) {
 478           // It seems harmless to call this multiple times, since this
 479           // is a simple field setter
 480           htmlDocument->SetIsFrameset(PR_TRUE);
 481         }
 482       }
 483
 484       if (!attributes) {
 485         return rv;
 486       }
 487
 488       PRInt32 len = attributes->getLength();
 489       for (PRInt32 i = len; i > 0;) {
 490         --i;
 491         // prefix doesn't need regetting. it is always null or a static atom
 492         // local name is never null
 493         nsCOMPtr<nsIAtom> localName = Reget(attributes->getLocalName(i));
 494         if (ns == kNameSpaceID_XHTML &&
 495             nsHtml5Atoms::a == name &&
 496             nsHtml5Atoms::name == localName) {
 497           // This is an HTML5-incompliant Geckoism.
 498           // Remove when fixing bug 582361
 499           NS_ConvertUTF16toUTF8 cname(*(attributes->getValue(i)));
 500           NS_ConvertUTF8toUTF16 uv(nsUnescape(cname.BeginWriting()));
 501           newContent->SetAttr(attributes->getURI(i), localName,
 502               attributes->getPrefix(i), uv, PR_FALSE);
 503         } else {
 504           newContent->SetAttr(attributes->getURI(i), localName,
 505               attributes->getPrefix(i), *(attributes->getValue(i)), PR_FALSE);
 506         }
 507       }
 508
 509       return rv;
 510     }
 511     case eTreeOpSetFormElement: {
 512       nsIContent* node = *(mOne.node);
 513       nsIContent* parent = *(mTwo.node);
 514       nsCOMPtr<nsIFormControl> formControl(do_QueryInterface(node));
 515       // NS_ASSERTION(formControl, "Form-associated element did not implement nsIFormControl.");
 516       // TODO: uncomment the above line when <keygen> (bug 101019) is supported by Gecko
 517       nsCOMPtr<nsIDOMHTMLFormElement> formElement(do_QueryInterface(parent));
 518       NS_ASSERTION(formElement, "The form element doesn't implement nsIDOMHTMLFormElement.");
 519       // avoid crashing on <keygen>
 520       if (formControl &&
 521           !node->HasAttr(kNameSpaceID_None, nsGkAtoms::form)) {
 522         formControl->SetForm(formElement);
 523       }
 524       return rv;
 525     }
 526     case eTreeOpAppendText: {
 527       nsIContent* parent = *mOne.node;
 528       PRUnichar* buffer = mTwo.unicharPtr;
 529       PRInt32 length = mInt;
 530       return AppendText(buffer, length, parent, aBuilder);
 531     }
 532     case eTreeOpAppendIsindexPrompt: {
 533       nsIContent* parent = *mOne.node;
 534       nsXPIDLString prompt;
 535       nsresult rv =
 536           nsContentUtils::GetLocalizedString(nsContentUtils::eFORMS_PROPERTIES,
 537                                              "IsIndexPromptWithSpace", prompt);
 538       PRUint32 len = prompt.Length();
 539       if (NS_FAILED(rv)) {
 540         return rv;
 541       }
 542       if (!len) {
 543         // Don't bother appending a zero-length text node.
 544         return NS_OK;
 545       }
 546       return AppendText(prompt.BeginReading(), len, parent, aBuilder);
 547     }
 548     case eTreeOpFosterParentText: {
 549       nsIContent* stackParent = *mOne.node;
 550       PRUnichar* buffer = mTwo.unicharPtr;
 551       PRInt32 length = mInt;
 552       nsIContent* table = *mThree.node;
 553
 554       nsIContent* foster = table->GetParent();
 555
 556       if (foster && foster->IsElement()) {
 557         aBuilder->FlushPendingAppendNotifications();
 558
 559         nsHtml5OtherDocUpdate update(foster->GetOwnerDoc(),
 560                                      aBuilder->GetDocument());
 561
 562         PRUint32 pos = foster->IndexOf(table);
 563
 564         nsIContent* previousSibling = foster->GetChildAt(pos - 1);
 565         if (previousSibling && previousSibling->IsNodeOfType(nsINode::eTEXT)) {
 566           return AppendTextToTextNode(buffer,
 567                                       length,
 568                                       previousSibling,
 569                                       aBuilder);
 570         }
 571
 572         nsCOMPtr<nsIContent> text;
 573         NS_NewTextNode(getter_AddRefs(text), aBuilder->GetNodeInfoManager());
 574         NS_ASSERTION(text, "Infallible malloc failed?");
 575         rv = text->SetText(buffer, length, PR_FALSE);
 576         NS_ENSURE_SUCCESS(rv, rv);
 577
 578         rv = foster->InsertChildAt(text, pos, PR_FALSE);
 579         NS_ENSURE_SUCCESS(rv, rv);
 580         nsNodeUtils::ContentInserted(foster, text, pos);
 581         return rv;
 582       }
 583
 584       return AppendText(buffer, length, stackParent, aBuilder);
 585     }
 586     case eTreeOpAppendComment: {
 587       nsIContent* parent = *mOne.node;
 588       PRUnichar* buffer = mTwo.unicharPtr;
 589       PRInt32 length = mInt;
 590
 591       nsCOMPtr<nsIContent> comment;
 592       NS_NewCommentNode(getter_AddRefs(comment), aBuilder->GetNodeInfoManager());
 593       NS_ASSERTION(comment, "Infallible malloc failed?");
 594       rv = comment->SetText(buffer, length, PR_FALSE);
 595       NS_ENSURE_SUCCESS(rv, rv);
 596
 597       return Append(comment, parent, aBuilder);
 598     }
 599     case eTreeOpAppendCommentToDocument: {
 600       PRUnichar* buffer = mTwo.unicharPtr;
 601       PRInt32 length = mInt;
 602
 603       nsCOMPtr<nsIContent> comment;
 604       NS_NewCommentNode(getter_AddRefs(comment), aBuilder->GetNodeInfoManager());
 605       NS_ASSERTION(comment, "Infallible malloc failed?");
 606       rv = comment->SetText(buffer, length, PR_FALSE);
 607       NS_ENSURE_SUCCESS(rv, rv);
 608
 609       return AppendToDocument(comment, aBuilder);
 610     }
 611     case eTreeOpAppendDoctypeToDocument: {
 612       nsCOMPtr<nsIAtom> name = Reget(mOne.atom);
 613       nsHtml5TreeOperationStringPair* pair = mTwo.stringPair;
 614       nsString publicId;
 615       nsString systemId;
 616       pair->Get(publicId, systemId);
 617
 618       // Adapted from nsXMLContentSink
 619       // Create a new doctype node
 620       nsCOMPtr<nsIDOMDocumentType> docType;
 621       nsAutoString voidString;
 622       voidString.SetIsVoid(PR_TRUE);
 623       NS_NewDOMDocumentType(getter_AddRefs(docType),
 624                             aBuilder->GetNodeInfoManager(),
 625                             nsnull,
 626                             name,
 627                             nsnull,
 628                             nsnull,
 629                             publicId,
 630                             systemId,
 631                             voidString);
 632       NS_ASSERTION(docType, "Doctype creation failed.");
 633       nsCOMPtr<nsIContent> asContent = do_QueryInterface(docType);
 634       return AppendToDocument(asContent, aBuilder);
 635     }
 636     case eTreeOpRunScript: {
 637       nsIContent* node = *(mOne.node);
 638       nsAHtml5TreeBuilderState* snapshot = mTwo.state;
 639       if (snapshot) {
 640         aBuilder->InitializeDocWriteParserState(snapshot, mInt);
 641       }
 642       *aScriptElement = node;
 643       return rv;
 644     }
 645     case eTreeOpRunScriptAsyncDefer: {
 646       nsIContent* node = *(mOne.node);
 647       aBuilder->RunScript(node);
 648       return rv;
 649     }
 650     case eTreeOpDoneAddingChildren: {
 651       nsIContent* node = *(mOne.node);
 652       node->DoneAddingChildren(aBuilder->HaveNotified(node));
 653       return rv;
 654     }
 655     case eTreeOpDoneCreatingElement: {
 656       nsIContent* node = *(mOne.node);
 657       node->DoneCreatingElement();
 658       return rv;
 659     }
 660     case eTreeOpFlushPendingAppendNotifications: {
 661       aBuilder->FlushPendingAppendNotifications();
 662       return rv;
 663     }
 664     case eTreeOpSetDocumentCharset: {
 665       char* str = mOne.charPtr;
 666       PRInt32 charsetSource = mInt;
 667       nsDependentCString dependentString(str);
 668       aBuilder->SetDocumentCharsetAndSource(dependentString, charsetSource);
 669       return rv;
 670     }
 671     case eTreeOpNeedsCharsetSwitchTo: {
 672       char* str = mOne.charPtr;
 673       aBuilder->NeedsCharsetSwitchTo(str);
 674       return rv;
 675     }
 676     case eTreeOpUpdateStyleSheet: {
 677       nsIContent* node = *(mOne.node);
 678       aBuilder->FlushPendingAppendNotifications();
 679       aBuilder->UpdateStyleSheet(node);
 680       return rv;
 681     }
 682     case eTreeOpProcessMeta: {
 683       nsIContent* node = *(mOne.node);
 684       rv = aBuilder->ProcessMETATag(node);
 685       return rv;
 686     }
 687     case eTreeOpProcessOfflineManifest: {
 688       PRUnichar* str = mOne.unicharPtr;
 689       nsDependentString dependentString(str);
 690       aBuilder->ProcessOfflineManifest(dependentString);
 691       return rv;
 692     }
 693     case eTreeOpMarkMalformedIfScript: {
 694       nsIContent* node = *(mOne.node);
 695       nsCOMPtr<nsIScriptElement> sele = do_QueryInterface(node);
 696       if (sele) {
 697         // Make sure to serialize this script correctly, for nice round tripping.
 698         sele->SetIsMalformed();
 699       }
 700       return rv;
 701     }
 702     case eTreeOpStreamEnded: {
 703       aBuilder->DidBuildModel(PR_FALSE); // this causes a notifications flush anyway
 704       return rv;
 705     }
 706     case eTreeOpStartLayout: {
 707       aBuilder->StartLayout(); // this causes a notification flush anyway
 708       return rv;
 709     }
 710     case eTreeOpDocumentMode: {
 711       aBuilder->SetDocumentMode(mOne.mode);
 712       return rv;
 713     }
 714     case eTreeOpSetStyleLineNumber: {
 715       nsIContent* node = *(mOne.node);
 716       nsCOMPtr<nsIStyleSheetLinkingElement> ssle = do_QueryInterface(node);
 717       NS_ASSERTION(ssle, "Node didn't QI to style.");
 718       ssle->SetLineNumber(mInt);
 719       return rv;
 720     }
 721     case eTreeOpSetScriptLineNumberAndFreeze: {
 722       nsIContent* node = *(mOne.node);
 723       nsCOMPtr<nsIScriptElement> sele = do_QueryInterface(node);
 724       NS_ASSERTION(sele, "Node didn't QI to script.");
 725       sele->SetScriptLineNumber(mInt);
 726       sele->FreezeUriAsyncDefer();
 727       return rv;
 728     }
 729 #ifdef MOZ_SVG
 730     case eTreeOpSvgLoad: {
 731       nsIContent* node = *(mOne.node);
 732       nsCOMPtr<nsIRunnable> event = new nsHtml5SVGLoadDispatcher(node);
 733       if (NS_FAILED(NS_DispatchToMainThread(event))) {
 734         NS_WARNING("failed to dispatch svg load dispatcher");
 735       }
 736       return rv;
 737     }
 738 #endif
 739     default: {
 740       NS_NOTREACHED("Bogus tree op");
 741     }
 742   }
 743   return rv; // keep compiler happy
 744 }