dlls/mshtml/mutation.c

   1 /*
   2  * Copyright 2008 Jacek Caban for CodeWeavers
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  17  */
  18
  19 #include "config.h"
  20
  21 #include <stdarg.h>
  22
  23 #define COBJMACROS
  24
  25 #include "windef.h"
  26 #include "winbase.h"
  27 #include "winuser.h"
  28 #include "winreg.h"
  29 #include "ole2.h"
  30 #include "shlguid.h"
  31
  32 #include "mshtml_private.h"
  33 #include "htmlevent.h"
  34
  35 #include "wine/debug.h"
  36
  37 WINE_DEFAULT_DEBUG_CHANNEL(mshtml);
  38
  39 #define IE_MAJOR_VERSION 7
  40 #define IE_MINOR_VERSION 0
  41
  42 static const IID NS_ICONTENTUTILS_CID =
  43     {0x762C4AE7,0xB923,0x422F,{0xB9,0x7E,0xB9,0xBF,0xC1,0xEF,0x7B,0xF0}};
  44
  45 static nsIContentUtils *content_utils;
  46
  47 static PRUnichar *handle_insert_comment(HTMLDocumentNode *doc, const PRUnichar *comment)
  48 {
  49     int majorv = 0, minorv = 0;
  50     const PRUnichar *ptr, *end;
  51     PRUnichar *buf;
  52     DWORD len;
  53
  54     enum {
  55         CMP_EQ,
  56         CMP_LT,
  57         CMP_LTE,
  58         CMP_GT,
  59         CMP_GTE
  60     } cmpt = CMP_EQ;
  61
  62     static const PRUnichar endifW[] = {'<','!','[','e','n','d','i','f',']'};
  63
  64     if(comment[0] != '[' || comment[1] != 'i' || comment[2] != 'f')
  65         return NULL;
  66
  67     ptr = comment+3;
  68     while(isspaceW(*ptr))
  69         ptr++;
  70
  71     if(ptr[0] == 'l' && ptr[1] == 't') {
  72         ptr += 2;
  73         if(*ptr == 'e') {
  74             cmpt = CMP_LTE;
  75             ptr++;
  76         }else {
  77             cmpt = CMP_LT;
  78         }
  79     }else if(ptr[0] == 'g' && ptr[1] == 't') {
  80         ptr += 2;
  81         if(*ptr == 'e') {
  82             cmpt = CMP_GTE;
  83             ptr++;
  84         }else {
  85             cmpt = CMP_GT;
  86         }
  87     }
  88
  89     if(!isspaceW(*ptr++))
  90         return NULL;
  91     while(isspaceW(*ptr))
  92         ptr++;
  93
  94     if(ptr[0] != 'I' || ptr[1] != 'E')
  95         return NULL;
  96
  97     ptr +=2;
  98     if(!isspaceW(*ptr++))
  99         return NULL;
 100     while(isspaceW(*ptr))
 101         ptr++;
 102
 103     if(!isdigitW(*ptr))
 104         return NULL;
 105     while(isdigitW(*ptr))
 106         majorv = majorv*10 + (*ptr++ - '0');
 107
 108     if(*ptr == '.') {
 109         ptr++;
 110         if(!isdigitW(*ptr))
 111             return NULL;
 112         while(isdigitW(*ptr))
 113             minorv = minorv*10 + (*ptr++ - '0');
 114     }
 115
 116     while(isspaceW(*ptr))
 117         ptr++;
 118     if(ptr[0] != ']' || ptr[1] != '>')
 119         return NULL;
 120     ptr += 2;
 121
 122     len = strlenW(ptr);
 123     if(len < sizeof(endifW)/sizeof(WCHAR))
 124         return NULL;
 125
 126     end = ptr + len-sizeof(endifW)/sizeof(WCHAR);
 127     if(memcmp(end, endifW, sizeof(endifW)))
 128         return NULL;
 129
 130     switch(cmpt) {
 131     case CMP_EQ:
 132         if(majorv == IE_MAJOR_VERSION && minorv == IE_MINOR_VERSION)
 133             break;
 134         return NULL;
 135     case CMP_LT:
 136         if(majorv > IE_MAJOR_VERSION)
 137             break;
 138         if(majorv == IE_MAJOR_VERSION && minorv > IE_MINOR_VERSION)
 139             break;
 140         return NULL;
 141     case CMP_LTE:
 142         if(majorv > IE_MAJOR_VERSION)
 143             break;
 144         if(majorv == IE_MAJOR_VERSION && minorv >= IE_MINOR_VERSION)
 145             break;
 146         return NULL;
 147     case CMP_GT:
 148         if(majorv < IE_MAJOR_VERSION)
 149             break;
 150         if(majorv == IE_MAJOR_VERSION && minorv < IE_MINOR_VERSION)
 151             break;
 152         return NULL;
 153     case CMP_GTE:
 154         if(majorv < IE_MAJOR_VERSION)
 155             break;
 156         if(majorv == IE_MAJOR_VERSION && minorv <= IE_MINOR_VERSION)
 157             break;
 158         return NULL;
 159     }
 160
 161     buf = heap_alloc((end-ptr+1)*sizeof(WCHAR));
 162     if(!buf)
 163         return NULL;
 164
 165     memcpy(buf, ptr, (end-ptr)*sizeof(WCHAR));
 166     buf[end-ptr] = 0;
 167
 168     return buf;
 169 }
 170
 171 static nsresult run_insert_comment(HTMLDocumentNode *doc, nsISupports *comment_iface, nsISupports *arg2)
 172 {
 173     const PRUnichar *comment;
 174     nsIDOMComment *nscomment;
 175     PRUnichar *replace_html;
 176     nsAString comment_str;
 177     nsresult nsres;
 178
 179     nsres = nsISupports_QueryInterface(comment_iface, &IID_nsIDOMComment, (void**)&nscomment);
 180     if(NS_FAILED(nsres)) {
 181         ERR("Could not get nsIDOMComment iface:%08x\n", nsres);
 182         return nsres;
 183     }
 184
 185     nsAString_Init(&comment_str, NULL);
 186     nsres = nsIDOMComment_GetData(nscomment, &comment_str);
 187     if(NS_FAILED(nsres))
 188         return nsres;
 189
 190     nsAString_GetData(&comment_str, &comment);
 191     replace_html = handle_insert_comment(doc, comment);
 192     nsAString_Finish(&comment_str);
 193
 194     if(replace_html) {
 195         HRESULT hres;
 196
 197         hres = replace_node_by_html(doc->nsdoc, (nsIDOMNode*)nscomment, replace_html);
 198         heap_free(replace_html);
 199         if(FAILED(hres))
 200             nsres = NS_ERROR_FAILURE;
 201     }
 202
 203
 204     nsIDOMComment_Release(nscomment);
 205     return nsres;
 206 }
 207
 208 static nsresult run_bind_to_tree(HTMLDocumentNode *doc, nsISupports *nsiface, nsISupports *arg2)
 209 {
 210     nsIDOMNode *nsnode;
 211     HTMLDOMNode *node;
 212     nsresult nsres;
 213     HRESULT hres;
 214
 215     TRACE("(%p)->(%p)\n", doc, nsiface);
 216
 217     nsres = nsISupports_QueryInterface(nsiface, &IID_nsIDOMNode, (void**)&nsnode);
 218     if(NS_FAILED(nsres))
 219         return nsres;
 220
 221     hres = get_node(doc, nsnode, TRUE, &node);
 222     nsIDOMNode_Release(nsnode);
 223     if(FAILED(hres)) {
 224         ERR("Could not get node\n");
 225         return nsres;
 226     }
 227
 228     if(node->vtbl->bind_to_tree)
 229         node->vtbl->bind_to_tree(node);
 230
 231     return nsres;
 232 }
 233
 234 /* Calls undocumented 69 cmd of CGID_Explorer */
 235 static void call_explorer_69(HTMLDocumentObj *doc)
 236 {
 237     IOleCommandTarget *olecmd;
 238     VARIANT var;
 239     HRESULT hres;
 240
 241     if(!doc->client)
 242         return;
 243
 244     hres = IOleClientSite_QueryInterface(doc->client, &IID_IOleCommandTarget, (void**)&olecmd);
 245     if(FAILED(hres))
 246         return;
 247
 248     VariantInit(&var);
 249     hres = IOleCommandTarget_Exec(olecmd, &CGID_Explorer, 69, 0, NULL, &var);
 250     IOleCommandTarget_Release(olecmd);
 251     if(SUCCEEDED(hres) && V_VT(&var) != VT_NULL)
 252         FIXME("handle result\n");
 253 }
 254
 255 static void parse_complete(HTMLDocumentObj *doc)
 256 {
 257     TRACE("(%p)\n", doc);
 258
 259     if(doc->usermode == EDITMODE)
 260         init_editor(&doc->basedoc);
 261
 262     call_explorer_69(doc);
 263     if(doc->view_sink)
 264         IAdviseSink_OnViewChange(doc->view_sink, DVASPECT_CONTENT, -1);
 265     call_property_onchanged(&doc->basedoc.cp_propnotif, 1005);
 266     call_explorer_69(doc);
 267
 268     if(doc->is_webbrowser && doc->usermode != EDITMODE)
 269         IDocObjectService_FireNavigateComplete2(doc->doc_object_service, &doc->basedoc.window->IHTMLWindow2_iface, 0);
 270
 271     /* FIXME: IE7 calls EnableModelless(TRUE), EnableModelless(FALSE) and sets interactive state here */
 272 }
 273
 274 static nsresult run_end_load(HTMLDocumentNode *This, nsISupports *arg1, nsISupports *arg2)
 275 {
 276     TRACE("(%p)\n", This);
 277
 278     if(!This->basedoc.doc_obj)
 279         return NS_OK;
 280
 281     if(This == This->basedoc.doc_obj->basedoc.doc_node) {
 282         /*
 283          * This should be done in the worker thread that parses HTML,
 284          * but we don't have such thread (Gecko parses HTML for us).
 285          */
 286         parse_complete(This->basedoc.doc_obj);
 287     }
 288
 289     set_ready_state(This->basedoc.window, READYSTATE_INTERACTIVE);
 290     return NS_OK;
 291 }
 292
 293 static nsresult run_insert_script(HTMLDocumentNode *doc, nsISupports *script_iface, nsISupports *parser_iface)
 294 {
 295     nsIDOMHTMLScriptElement *nsscript;
 296     nsIParser *nsparser = NULL;
 297     nsresult nsres;
 298
 299     TRACE("(%p)->(%p)\n", doc, script_iface);
 300
 301     nsres = nsISupports_QueryInterface(script_iface, &IID_nsIDOMHTMLScriptElement, (void**)&nsscript);
 302     if(NS_FAILED(nsres)) {
 303         ERR("Could not get nsIDOMHTMLScriptElement: %08x\n", nsres);
 304         return nsres;
 305     }
 306
 307     if(parser_iface) {
 308         nsres = nsISupports_QueryInterface(parser_iface, &IID_nsIParser, (void**)&nsparser);
 309         if(NS_FAILED(nsres)) {
 310             ERR("Could not get nsIParser iface: %08x\n", nsres);
 311             nsparser = NULL;
 312         }
 313     }
 314
 315     if(nsparser)
 316         nsIParser_BeginEvaluatingParserInsertedScript(nsparser);
 317
 318     doc_insert_script(doc->basedoc.window, nsscript);
 319
 320     if(nsparser) {
 321         nsIParser_EndEvaluatingParserInsertedScript(nsparser);
 322         nsIParser_Release(nsparser);
 323     }
 324
 325     nsIDOMHTMLScriptElement_Release(nsscript);
 326     return NS_OK;
 327 }
 328
 329 typedef struct nsRunnable nsRunnable;
 330
 331 typedef nsresult (*runnable_proc_t)(HTMLDocumentNode*,nsISupports*,nsISupports*);
 332
 333 struct nsRunnable {
 334     nsIRunnable  nsIRunnable_iface;
 335
 336     LONG ref;
 337
 338     runnable_proc_t proc;
 339
 340     HTMLDocumentNode *doc;
 341     nsISupports *arg1;
 342     nsISupports *arg2;
 343 };
 344
 345 static inline nsRunnable *impl_from_nsIRunnable(nsIRunnable *iface)
 346 {
 347     return CONTAINING_RECORD(iface, nsRunnable, nsIRunnable_iface);
 348 }
 349
 350 static nsresult NSAPI nsRunnable_QueryInterface(nsIRunnable *iface,
 351         nsIIDRef riid, void **result)
 352 {
 353     nsRunnable *This = impl_from_nsIRunnable(iface);
 354
 355     if(IsEqualGUID(riid, &IID_nsISupports)) {
 356         TRACE("(%p)->(IID_nsISupports %p)\n", This, result);
 357         *result = &This->nsIRunnable_iface;
 358     }else if(IsEqualGUID(riid, &IID_nsIRunnable)) {
 359         TRACE("(%p)->(IID_nsIRunnable %p)\n", This, result);
 360         *result = &This->nsIRunnable_iface;
 361     }else {
 362         *result = NULL;
 363         WARN("(%p)->(%s %p)\n", This, debugstr_guid(riid), result);
 364         return NS_NOINTERFACE;
 365     }
 366
 367     nsISupports_AddRef((nsISupports*)*result);
 368     return NS_OK;
 369 }
 370
 371 static nsrefcnt NSAPI nsRunnable_AddRef(nsIRunnable *iface)
 372 {
 373     nsRunnable *This = impl_from_nsIRunnable(iface);
 374     LONG ref = InterlockedIncrement(&This->ref);
 375
 376     TRACE("(%p) ref=%d\n", This, ref);
 377
 378     return ref;
 379 }
 380
 381 static nsrefcnt NSAPI nsRunnable_Release(nsIRunnable *iface)
 382 {
 383     nsRunnable *This = impl_from_nsIRunnable(iface);
 384     LONG ref = InterlockedDecrement(&This->ref);
 385
 386     TRACE("(%p) ref=%d\n", This, ref);
 387
 388     if(!ref) {
 389         htmldoc_release(&This->doc->basedoc);
 390         if(This->arg1)
 391             nsISupports_Release(This->arg1);
 392         if(This->arg2)
 393             nsISupports_Release(This->arg2);
 394         heap_free(This);
 395     }
 396
 397     return ref;
 398 }
 399
 400 static nsresult NSAPI nsRunnable_Run(nsIRunnable *iface)
 401 {
 402     nsRunnable *This = impl_from_nsIRunnable(iface);
 403
 404     return This->proc(This->doc, This->arg1, This->arg2);
 405 }
 406
 407 static const nsIRunnableVtbl nsRunnableVtbl = {
 408     nsRunnable_QueryInterface,
 409     nsRunnable_AddRef,
 410     nsRunnable_Release,
 411     nsRunnable_Run
 412 };
 413
 414 static void add_script_runner(HTMLDocumentNode *This, runnable_proc_t proc, nsISupports *arg1, nsISupports *arg2)
 415 {
 416     nsRunnable *runnable;
 417
 418     runnable = heap_alloc_zero(sizeof(*runnable));
 419     if(!runnable)
 420         return;
 421
 422     runnable->nsIRunnable_iface.lpVtbl = &nsRunnableVtbl;
 423     runnable->ref = 1;
 424
 425     htmldoc_addref(&This->basedoc);
 426     runnable->doc = This;
 427     runnable->proc = proc;
 428
 429     if(arg1)
 430         nsISupports_AddRef(arg1);
 431     runnable->arg1 = arg1;
 432
 433     if(arg2)
 434         nsISupports_AddRef(arg2);
 435     runnable->arg2 = arg2;
 436
 437     nsIContentUtils_AddScriptRunner(content_utils, &runnable->nsIRunnable_iface);
 438
 439     nsIRunnable_Release(&runnable->nsIRunnable_iface);
 440 }
 441
 442 static inline HTMLDocumentNode *impl_from_nsIDocumentObserver(nsIDocumentObserver *iface)
 443 {
 444     return CONTAINING_RECORD(iface, HTMLDocumentNode, nsIDocumentObserver_iface);
 445 }
 446
 447 static nsresult NSAPI nsDocumentObserver_QueryInterface(nsIDocumentObserver *iface,
 448         nsIIDRef riid, void **result)
 449 {
 450     HTMLDocumentNode *This = impl_from_nsIDocumentObserver(iface);
 451
 452     if(IsEqualGUID(&IID_nsISupports, riid)) {
 453         TRACE("(%p)->(IID_nsISupports, %p)\n", This, result);
 454         *result = &This->nsIDocumentObserver_iface;
 455     }else if(IsEqualGUID(&IID_nsIMutationObserver, riid)) {
 456         TRACE("(%p)->(IID_nsIMutationObserver %p)\n", This, result);
 457         *result = &This->nsIDocumentObserver_iface;
 458     }else if(IsEqualGUID(&IID_nsIDocumentObserver, riid)) {
 459         TRACE("(%p)->(IID_nsIDocumentObserver %p)\n", This, result);
 460         *result = &This->nsIDocumentObserver_iface;
 461     }else {
 462         *result = NULL;
 463         TRACE("(%p)->(%s %p)\n", This, debugstr_guid(riid), result);
 464         return NS_NOINTERFACE;
 465     }
 466
 467     htmldoc_addref(&This->basedoc);
 468     return NS_OK;
 469 }
 470
 471 static nsrefcnt NSAPI nsDocumentObserver_AddRef(nsIDocumentObserver *iface)
 472 {
 473     HTMLDocumentNode *This = impl_from_nsIDocumentObserver(iface);
 474     return htmldoc_addref(&This->basedoc);
 475 }
 476
 477 static nsrefcnt NSAPI nsDocumentObserver_Release(nsIDocumentObserver *iface)
 478 {
 479     HTMLDocumentNode *This = impl_from_nsIDocumentObserver(iface);
 480     return htmldoc_release(&This->basedoc);
 481 }
 482
 483 static void NSAPI nsDocumentObserver_CharacterDataWillChange(nsIDocumentObserver *iface,
 484         nsIDocument *aDocument, nsIContent *aContent, void /*CharacterDataChangeInfo*/ *aInfo)
 485 {
 486 }
 487
 488 static void NSAPI nsDocumentObserver_CharacterDataChanged(nsIDocumentObserver *iface,
 489         nsIDocument *aDocument, nsIContent *aContent, void /*CharacterDataChangeInfo*/ *aInfo)
 490 {
 491 }
 492
 493 static void NSAPI nsDocumentObserver_AttributeWillChange(nsIDocumentObserver *iface, nsIDocument *aDocument,
 494         nsIContent *aContent, PRInt32 aNameSpaceID, nsIAtom *aAttribute, PRInt32 aModType)
 495 {
 496 }
 497
 498 static void NSAPI nsDocumentObserver_AttributeChanged(nsIDocumentObserver *iface, nsIDocument *aDocument,
 499         nsIContent *aContent, PRInt32 aNameSpaceID, nsIAtom *aAttribute, PRInt32 aModType)
 500 {
 501 }
 502
 503 static void NSAPI nsDocumentObserver_ContentAppended(nsIDocumentObserver *iface, nsIDocument *aDocument,
 504         nsIContent *aContainer, nsIContent *aFirstNewContent, PRInt32 aNewIndexInContainer)
 505 {
 506 }
 507
 508 static void NSAPI nsDocumentObserver_ContentInserted(nsIDocumentObserver *iface, nsIDocument *aDocument,
 509         nsIContent *aContainer, nsIContent *aChild, PRInt32 aIndexInContainer)
 510 {
 511 }
 512
 513 static void NSAPI nsDocumentObserver_ContentRemoved(nsIDocumentObserver *iface, nsIDocument *aDocument,
 514         nsIContent *aContainer, nsIContent *aChild, PRInt32 aIndexInContainer,
 515         nsIContent *aProviousSibling)
 516 {
 517 }
 518
 519 static void NSAPI nsDocumentObserver_NodeWillBeDestroyed(nsIDocumentObserver *iface, const nsINode *aNode)
 520 {
 521 }
 522
 523 static void NSAPI nsDocumentObserver_ParentChainChanged(nsIDocumentObserver *iface, nsIContent *aContent)
 524 {
 525 }
 526
 527 static void NSAPI nsDocumentObserver_BeginUpdate(nsIDocumentObserver *iface, nsIDocument *aDocument,
 528         nsUpdateType aUpdateType)
 529 {
 530 }
 531
 532 static void NSAPI nsDocumentObserver_EndUpdate(nsIDocumentObserver *iface, nsIDocument *aDocument,
 533         nsUpdateType aUpdateType)
 534 {
 535 }
 536
 537 static void NSAPI nsDocumentObserver_BeginLoad(nsIDocumentObserver *iface, nsIDocument *aDocument)
 538 {
 539 }
 540
 541 static void NSAPI nsDocumentObserver_EndLoad(nsIDocumentObserver *iface, nsIDocument *aDocument)
 542 {
 543     HTMLDocumentNode *This = impl_from_nsIDocumentObserver(iface);
 544
 545     TRACE("(%p)\n", This);
 546
 547     if(This->skip_mutation_notif)
 548         return;
 549
 550     This->content_ready = TRUE;
 551     add_script_runner(This, run_end_load, NULL, NULL);
 552 }
 553
 554 static void NSAPI nsDocumentObserver_ContentStatesChanged(nsIDocumentObserver *iface, nsIDocument *aDocument,
 555         nsIContent *aContent, nsEventStates *aStateMask)
 556 {
 557 }
 558
 559 static void NSAPI nsDocumentObserver_DocumentStatesChanged(nsIDocumentObserver *iface, nsIDocument *aDocument,
 560         nsEventStates *aStateMask)
 561 {
 562 }
 563
 564 static void NSAPI nsDocumentObserver_StyleSheetAdded(nsIDocumentObserver *iface, nsIDocument *aDocument,
 565         nsIStyleSheet *aStyleSheet, PRBool aDocumentSheet)
 566 {
 567 }
 568
 569 static void NSAPI nsDocumentObserver_StyleSheetRemoved(nsIDocumentObserver *iface, nsIDocument *aDocument,
 570         nsIStyleSheet *aStyleSheet, PRBool aDocumentSheet)
 571 {
 572 }
 573
 574 static void NSAPI nsDocumentObserver_StyleSheetApplicableStateChanged(nsIDocumentObserver *iface,
 575         nsIDocument *aDocument, nsIStyleSheet *aStyleSheet, PRBool aApplicable)
 576 {
 577 }
 578
 579 static void NSAPI nsDocumentObserver_StyleRuleChanged(nsIDocumentObserver *iface, nsIDocument *aDocument,
 580         nsIStyleSheet *aStyleSheet, nsIStyleRule *aOldStyleRule, nsIStyleSheet *aNewStyleRule)
 581 {
 582 }
 583
 584 static void NSAPI nsDocumentObserver_StyleRuleAdded(nsIDocumentObserver *iface, nsIDocument *aDocument,
 585         nsIStyleSheet *aStyleSheet, nsIStyleRule *aStyleRule)
 586 {
 587 }
 588
 589 static void NSAPI nsDocumentObserver_StyleRuleRemoved(nsIDocumentObserver *iface, nsIDocument *aDocument,
 590         nsIStyleSheet *aStyleSheet, nsIStyleRule *aStyleRule)
 591 {
 592 }
 593
 594 static void NSAPI nsDocumentObserver_BindToDocument(nsIDocumentObserver *iface, nsIDocument *aDocument,
 595         nsIContent *aContent)
 596 {
 597     HTMLDocumentNode *This = impl_from_nsIDocumentObserver(iface);
 598     nsIDOMHTMLIFrameElement *nsiframe;
 599     nsIDOMHTMLFrameElement *nsframe;
 600     nsIDOMComment *nscomment;
 601     nsIDOMElement *nselem;
 602     nsresult nsres;
 603
 604     TRACE("(%p)\n", This);
 605
 606     nsres = nsISupports_QueryInterface(aContent, &IID_nsIDOMElement, (void**)&nselem);
 607     if(NS_SUCCEEDED(nsres)) {
 608         check_event_attr(This, nselem);
 609         nsIDOMElement_Release(nselem);
 610     }
 611
 612     nsres = nsISupports_QueryInterface(aContent, &IID_nsIDOMComment, (void**)&nscomment);
 613     if(NS_SUCCEEDED(nsres)) {
 614         TRACE("comment node\n");
 615
 616         add_script_runner(This, run_insert_comment, (nsISupports*)nscomment, NULL);
 617         nsIDOMComment_Release(nscomment);
 618     }
 619
 620     nsres = nsISupports_QueryInterface(aContent, &IID_nsIDOMHTMLIFrameElement, (void**)&nsiframe);
 621     if(NS_SUCCEEDED(nsres)) {
 622         TRACE("iframe node\n");
 623
 624         add_script_runner(This, run_bind_to_tree, (nsISupports*)nsiframe, NULL);
 625         nsIDOMHTMLIFrameElement_Release(nsiframe);
 626     }
 627
 628     nsres = nsISupports_QueryInterface(aContent, &IID_nsIDOMHTMLFrameElement, (void**)&nsframe);
 629     if(NS_SUCCEEDED(nsres)) {
 630         TRACE("frame node\n");
 631
 632         add_script_runner(This, run_bind_to_tree, (nsISupports*)nsframe, NULL);
 633         nsIDOMHTMLFrameElement_Release(nsframe);
 634     }
 635 }
 636
 637 static void NSAPI nsDocumentObserver_AttemptToExecuteScript(nsIDocumentObserver *iface, nsIContent *aContent,
 638         nsIParser *aParser, PRBool *aBlock)
 639 {
 640     HTMLDocumentNode *This = impl_from_nsIDocumentObserver(iface);
 641     nsIDOMHTMLScriptElement *nsscript;
 642     nsresult nsres;
 643
 644     TRACE("(%p)->(%p %p %p)\n", This, aContent, aParser, aBlock);
 645
 646     nsres = nsISupports_QueryInterface(aContent, &IID_nsIDOMHTMLScriptElement, (void**)&nsscript);
 647     if(NS_SUCCEEDED(nsres)) {
 648         TRACE("script node\n");
 649
 650         add_script_runner(This, run_insert_script, (nsISupports*)nsscript, (nsISupports*)aParser);
 651         nsIDOMHTMLScriptElement_Release(nsscript);
 652     }
 653 }
 654
 655 static const nsIDocumentObserverVtbl nsDocumentObserverVtbl = {
 656     nsDocumentObserver_QueryInterface,
 657     nsDocumentObserver_AddRef,
 658     nsDocumentObserver_Release,
 659     nsDocumentObserver_CharacterDataWillChange,
 660     nsDocumentObserver_CharacterDataChanged,
 661     nsDocumentObserver_AttributeWillChange,
 662     nsDocumentObserver_AttributeChanged,
 663     nsDocumentObserver_ContentAppended,
 664     nsDocumentObserver_ContentInserted,
 665     nsDocumentObserver_ContentRemoved,
 666     nsDocumentObserver_NodeWillBeDestroyed,
 667     nsDocumentObserver_ParentChainChanged,
 668     nsDocumentObserver_BeginUpdate,
 669     nsDocumentObserver_EndUpdate,
 670     nsDocumentObserver_BeginLoad,
 671     nsDocumentObserver_EndLoad,
 672     nsDocumentObserver_ContentStatesChanged,
 673     nsDocumentObserver_DocumentStatesChanged,
 674     nsDocumentObserver_StyleSheetAdded,
 675     nsDocumentObserver_StyleSheetRemoved,
 676     nsDocumentObserver_StyleSheetApplicableStateChanged,
 677     nsDocumentObserver_StyleRuleChanged,
 678     nsDocumentObserver_StyleRuleAdded,
 679     nsDocumentObserver_StyleRuleRemoved,
 680     nsDocumentObserver_BindToDocument,
 681     nsDocumentObserver_AttemptToExecuteScript
 682 };
 683
 684 void init_document_mutation(HTMLDocumentNode *doc)
 685 {
 686     nsIDocument *nsdoc;
 687     nsresult nsres;
 688
 689     doc->nsIDocumentObserver_iface.lpVtbl = &nsDocumentObserverVtbl;
 690
 691     nsres = nsIDOMHTMLDocument_QueryInterface(doc->nsdoc, &IID_nsIDocument, (void**)&nsdoc);
 692     if(NS_FAILED(nsres)) {
 693         ERR("Could not get nsIDocument: %08x\n", nsres);
 694         return;
 695     }
 696
 697     nsIContentUtils_AddDocumentObserver(content_utils, nsdoc, &doc->nsIDocumentObserver_iface);
 698     nsIDocument_Release(nsdoc);
 699 }
 700
 701 void release_document_mutation(HTMLDocumentNode *doc)
 702 {
 703     nsIDocument *nsdoc;
 704     nsresult nsres;
 705
 706     nsres = nsIDOMHTMLDocument_QueryInterface(doc->nsdoc, &IID_nsIDocument, (void**)&nsdoc);
 707     if(NS_FAILED(nsres)) {
 708         ERR("Could not get nsIDocument: %08x\n", nsres);
 709         return;
 710     }
 711
 712     nsIContentUtils_RemoveDocumentObserver(content_utils, nsdoc, &doc->nsIDocumentObserver_iface);
 713     nsIDocument_Release(nsdoc);
 714 }
 715
 716 void init_mutation(nsIComponentManager *component_manager)
 717 {
 718     nsIFactory *factory;
 719     nsresult nsres;
 720
 721     if(!component_manager) {
 722         if(content_utils) {
 723             nsIContentUtils_Release(content_utils);
 724             content_utils = NULL;
 725         }
 726         return;
 727     }
 728
 729     nsres = nsIComponentManager_GetClassObject(component_manager, &NS_ICONTENTUTILS_CID,
 730             &IID_nsIFactory, (void**)&factory);
 731     if(NS_FAILED(nsres)) {
 732         ERR("Could not create nsIContentUtils service: %08x\n", nsres);
 733         return;
 734     }
 735
 736     nsres = nsIFactory_CreateInstance(factory, NULL, &IID_nsIContentUtils, (void**)&content_utils);
 737     nsIFactory_Release(factory);
 738     if(NS_FAILED(nsres))
 739         ERR("Could not create nsIContentUtils instance: %08x\n", nsres);
 740 }