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     node_release(node);
 232     return nsres;
 233 }
 234
 235 /* Calls undocumented 69 cmd of CGID_Explorer */
 236 static void call_explorer_69(HTMLDocumentObj *doc)
 237 {
 238     IOleCommandTarget *olecmd;
 239     VARIANT var;
 240     HRESULT hres;
 241
 242     if(!doc->client)
 243         return;
 244
 245     hres = IOleClientSite_QueryInterface(doc->client, &IID_IOleCommandTarget, (void**)&olecmd);
 246     if(FAILED(hres))
 247         return;
 248
 249     VariantInit(&var);
 250     hres = IOleCommandTarget_Exec(olecmd, &CGID_Explorer, 69, 0, NULL, &var);
 251     IOleCommandTarget_Release(olecmd);
 252     if(SUCCEEDED(hres) && V_VT(&var) != VT_NULL)
 253         FIXME("handle result\n");
 254 }
 255
 256 static void parse_complete(HTMLDocumentObj *doc)
 257 {
 258     TRACE("(%p)\n", doc);
 259
 260     if(doc->usermode == EDITMODE)
 261         init_editor(&doc->basedoc);
 262
 263     call_explorer_69(doc);
 264     if(doc->view_sink)
 265         IAdviseSink_OnViewChange(doc->view_sink, DVASPECT_CONTENT, -1);
 266     call_property_onchanged(&doc->basedoc.cp_propnotif, 1005);
 267     call_explorer_69(doc);
 268
 269     if(doc->is_webbrowser && doc->usermode != EDITMODE)
 270         IDocObjectService_FireNavigateComplete2(doc->doc_object_service, &doc->basedoc.window->base.IHTMLWindow2_iface, 0);
 271
 272     /* FIXME: IE7 calls EnableModelless(TRUE), EnableModelless(FALSE) and sets interactive state here */
 273 }
 274
 275 static nsresult run_end_load(HTMLDocumentNode *This, nsISupports *arg1, nsISupports *arg2)
 276 {
 277     TRACE("(%p)\n", This);
 278
 279     if(!This->basedoc.doc_obj)
 280         return NS_OK;
 281
 282     if(This == This->basedoc.doc_obj->basedoc.doc_node) {
 283         /*
 284          * This should be done in the worker thread that parses HTML,
 285          * but we don't have such thread (Gecko parses HTML for us).
 286          */
 287         parse_complete(This->basedoc.doc_obj);
 288     }
 289
 290     set_ready_state(This->basedoc.window, READYSTATE_INTERACTIVE);
 291     return NS_OK;
 292 }
 293
 294 static nsresult run_insert_script(HTMLDocumentNode *doc, nsISupports *script_iface, nsISupports *parser_iface)
 295 {
 296     nsIDOMHTMLScriptElement *nsscript;
 297     nsIParser *nsparser = NULL;
 298     nsresult nsres;
 299
 300     TRACE("(%p)->(%p)\n", doc, script_iface);
 301
 302     nsres = nsISupports_QueryInterface(script_iface, &IID_nsIDOMHTMLScriptElement, (void**)&nsscript);
 303     if(NS_FAILED(nsres)) {
 304         ERR("Could not get nsIDOMHTMLScriptElement: %08x\n", nsres);
 305         return nsres;
 306     }
 307
 308     if(parser_iface) {
 309         nsres = nsISupports_QueryInterface(parser_iface, &IID_nsIParser, (void**)&nsparser);
 310         if(NS_FAILED(nsres)) {
 311             ERR("Could not get nsIParser iface: %08x\n", nsres);
 312             nsparser = NULL;
 313         }
 314     }
 315
 316     if(nsparser)
 317         nsIParser_BeginEvaluatingParserInsertedScript(nsparser);
 318
 319     doc_insert_script(doc->basedoc.window->base.inner_window, nsscript);
 320
 321     if(nsparser) {
 322         nsIParser_EndEvaluatingParserInsertedScript(nsparser);
 323         nsIParser_Release(nsparser);
 324     }
 325
 326     nsIDOMHTMLScriptElement_Release(nsscript);
 327     return NS_OK;
 328 }
 329
 330 typedef struct nsRunnable nsRunnable;
 331
 332 typedef nsresult (*runnable_proc_t)(HTMLDocumentNode*,nsISupports*,nsISupports*);
 333
 334 struct nsRunnable {
 335     nsIRunnable  nsIRunnable_iface;
 336
 337     LONG ref;
 338
 339     runnable_proc_t proc;
 340
 341     HTMLDocumentNode *doc;
 342     nsISupports *arg1;
 343     nsISupports *arg2;
 344 };
 345
 346 static inline nsRunnable *impl_from_nsIRunnable(nsIRunnable *iface)
 347 {
 348     return CONTAINING_RECORD(iface, nsRunnable, nsIRunnable_iface);
 349 }
 350
 351 static nsresult NSAPI nsRunnable_QueryInterface(nsIRunnable *iface,
 352         nsIIDRef riid, void **result)
 353 {
 354     nsRunnable *This = impl_from_nsIRunnable(iface);
 355
 356     if(IsEqualGUID(riid, &IID_nsISupports)) {
 357         TRACE("(%p)->(IID_nsISupports %p)\n", This, result);
 358         *result = &This->nsIRunnable_iface;
 359     }else if(IsEqualGUID(riid, &IID_nsIRunnable)) {
 360         TRACE("(%p)->(IID_nsIRunnable %p)\n", This, result);
 361         *result = &This->nsIRunnable_iface;
 362     }else {
 363         *result = NULL;
 364         WARN("(%p)->(%s %p)\n", This, debugstr_guid(riid), result);
 365         return NS_NOINTERFACE;
 366     }
 367
 368     nsISupports_AddRef((nsISupports*)*result);
 369     return NS_OK;
 370 }
 371
 372 static nsrefcnt NSAPI nsRunnable_AddRef(nsIRunnable *iface)
 373 {
 374     nsRunnable *This = impl_from_nsIRunnable(iface);
 375     LONG ref = InterlockedIncrement(&This->ref);
 376
 377     TRACE("(%p) ref=%d\n", This, ref);
 378
 379     return ref;
 380 }
 381
 382 static nsrefcnt NSAPI nsRunnable_Release(nsIRunnable *iface)
 383 {
 384     nsRunnable *This = impl_from_nsIRunnable(iface);
 385     LONG ref = InterlockedDecrement(&This->ref);
 386
 387     TRACE("(%p) ref=%d\n", This, ref);
 388
 389     if(!ref) {
 390         htmldoc_release(&This->doc->basedoc);
 391         if(This->arg1)
 392             nsISupports_Release(This->arg1);
 393         if(This->arg2)
 394             nsISupports_Release(This->arg2);
 395         heap_free(This);
 396     }
 397
 398     return ref;
 399 }
 400
 401 static nsresult NSAPI nsRunnable_Run(nsIRunnable *iface)
 402 {
 403     nsRunnable *This = impl_from_nsIRunnable(iface);
 404
 405     return This->proc(This->doc, This->arg1, This->arg2);
 406 }
 407
 408 static const nsIRunnableVtbl nsRunnableVtbl = {
 409     nsRunnable_QueryInterface,
 410     nsRunnable_AddRef,
 411     nsRunnable_Release,
 412     nsRunnable_Run
 413 };
 414
 415 static void add_script_runner(HTMLDocumentNode *This, runnable_proc_t proc, nsISupports *arg1, nsISupports *arg2)
 416 {
 417     nsRunnable *runnable;
 418
 419     runnable = heap_alloc_zero(sizeof(*runnable));
 420     if(!runnable)
 421         return;
 422
 423     runnable->nsIRunnable_iface.lpVtbl = &nsRunnableVtbl;
 424     runnable->ref = 1;
 425
 426     htmldoc_addref(&This->basedoc);
 427     runnable->doc = This;
 428     runnable->proc = proc;
 429
 430     if(arg1)
 431         nsISupports_AddRef(arg1);
 432     runnable->arg1 = arg1;
 433
 434     if(arg2)
 435         nsISupports_AddRef(arg2);
 436     runnable->arg2 = arg2;
 437
 438     nsIContentUtils_AddScriptRunner(content_utils, &runnable->nsIRunnable_iface);
 439
 440     nsIRunnable_Release(&runnable->nsIRunnable_iface);
 441 }
 442
 443 static inline HTMLDocumentNode *impl_from_nsIDocumentObserver(nsIDocumentObserver *iface)
 444 {
 445     return CONTAINING_RECORD(iface, HTMLDocumentNode, nsIDocumentObserver_iface);
 446 }
 447
 448 static nsresult NSAPI nsDocumentObserver_QueryInterface(nsIDocumentObserver *iface,
 449         nsIIDRef riid, void **result)
 450 {
 451     HTMLDocumentNode *This = impl_from_nsIDocumentObserver(iface);
 452
 453     if(IsEqualGUID(&IID_nsISupports, riid)) {
 454         TRACE("(%p)->(IID_nsISupports, %p)\n", This, result);
 455         *result = &This->nsIDocumentObserver_iface;
 456     }else if(IsEqualGUID(&IID_nsIMutationObserver, riid)) {
 457         TRACE("(%p)->(IID_nsIMutationObserver %p)\n", This, result);
 458         *result = &This->nsIDocumentObserver_iface;
 459     }else if(IsEqualGUID(&IID_nsIDocumentObserver, riid)) {
 460         TRACE("(%p)->(IID_nsIDocumentObserver %p)\n", This, result);
 461         *result = &This->nsIDocumentObserver_iface;
 462     }else {
 463         *result = NULL;
 464         TRACE("(%p)->(%s %p)\n", This, debugstr_guid(riid), result);
 465         return NS_NOINTERFACE;
 466     }
 467
 468     htmldoc_addref(&This->basedoc);
 469     return NS_OK;
 470 }
 471
 472 static nsrefcnt NSAPI nsDocumentObserver_AddRef(nsIDocumentObserver *iface)
 473 {
 474     HTMLDocumentNode *This = impl_from_nsIDocumentObserver(iface);
 475     return htmldoc_addref(&This->basedoc);
 476 }
 477
 478 static nsrefcnt NSAPI nsDocumentObserver_Release(nsIDocumentObserver *iface)
 479 {
 480     HTMLDocumentNode *This = impl_from_nsIDocumentObserver(iface);
 481     return htmldoc_release(&This->basedoc);
 482 }
 483
 484 static void NSAPI nsDocumentObserver_CharacterDataWillChange(nsIDocumentObserver *iface,
 485         nsIDocument *aDocument, nsIContent *aContent, void /*CharacterDataChangeInfo*/ *aInfo)
 486 {
 487 }
 488
 489 static void NSAPI nsDocumentObserver_CharacterDataChanged(nsIDocumentObserver *iface,
 490         nsIDocument *aDocument, nsIContent *aContent, void /*CharacterDataChangeInfo*/ *aInfo)
 491 {
 492 }
 493
 494 static void NSAPI nsDocumentObserver_AttributeWillChange(nsIDocumentObserver *iface, nsIDocument *aDocument,
 495         nsIContent *aContent, PRInt32 aNameSpaceID, nsIAtom *aAttribute, PRInt32 aModType)
 496 {
 497 }
 498
 499 static void NSAPI nsDocumentObserver_AttributeChanged(nsIDocumentObserver *iface, nsIDocument *aDocument,
 500         nsIContent *aContent, PRInt32 aNameSpaceID, nsIAtom *aAttribute, PRInt32 aModType)
 501 {
 502 }
 503
 504 static void NSAPI nsDocumentObserver_ContentAppended(nsIDocumentObserver *iface, nsIDocument *aDocument,
 505         nsIContent *aContainer, nsIContent *aFirstNewContent, PRInt32 aNewIndexInContainer)
 506 {
 507 }
 508
 509 static void NSAPI nsDocumentObserver_ContentInserted(nsIDocumentObserver *iface, nsIDocument *aDocument,
 510         nsIContent *aContainer, nsIContent *aChild, PRInt32 aIndexInContainer)
 511 {
 512 }
 513
 514 static void NSAPI nsDocumentObserver_ContentRemoved(nsIDocumentObserver *iface, nsIDocument *aDocument,
 515         nsIContent *aContainer, nsIContent *aChild, PRInt32 aIndexInContainer,
 516         nsIContent *aProviousSibling)
 517 {
 518 }
 519
 520 static void NSAPI nsDocumentObserver_NodeWillBeDestroyed(nsIDocumentObserver *iface, const nsINode *aNode)
 521 {
 522 }
 523
 524 static void NSAPI nsDocumentObserver_ParentChainChanged(nsIDocumentObserver *iface, nsIContent *aContent)
 525 {
 526 }
 527
 528 static void NSAPI nsDocumentObserver_BeginUpdate(nsIDocumentObserver *iface, nsIDocument *aDocument,
 529         nsUpdateType aUpdateType)
 530 {
 531 }
 532
 533 static void NSAPI nsDocumentObserver_EndUpdate(nsIDocumentObserver *iface, nsIDocument *aDocument,
 534         nsUpdateType aUpdateType)
 535 {
 536 }
 537
 538 static void NSAPI nsDocumentObserver_BeginLoad(nsIDocumentObserver *iface, nsIDocument *aDocument)
 539 {
 540 }
 541
 542 static void NSAPI nsDocumentObserver_EndLoad(nsIDocumentObserver *iface, nsIDocument *aDocument)
 543 {
 544     HTMLDocumentNode *This = impl_from_nsIDocumentObserver(iface);
 545
 546     TRACE("(%p)\n", This);
 547
 548     if(This->skip_mutation_notif)
 549         return;
 550
 551     This->content_ready = TRUE;
 552     add_script_runner(This, run_end_load, NULL, NULL);
 553 }
 554
 555 static void NSAPI nsDocumentObserver_ContentStatesChanged(nsIDocumentObserver *iface, nsIDocument *aDocument,
 556         nsIContent *aContent, nsEventStates *aStateMask)
 557 {
 558 }
 559
 560 static void NSAPI nsDocumentObserver_DocumentStatesChanged(nsIDocumentObserver *iface, nsIDocument *aDocument,
 561         nsEventStates *aStateMask)
 562 {
 563 }
 564
 565 static void NSAPI nsDocumentObserver_StyleSheetAdded(nsIDocumentObserver *iface, nsIDocument *aDocument,
 566         nsIStyleSheet *aStyleSheet, cpp_bool aDocumentSheet)
 567 {
 568 }
 569
 570 static void NSAPI nsDocumentObserver_StyleSheetRemoved(nsIDocumentObserver *iface, nsIDocument *aDocument,
 571         nsIStyleSheet *aStyleSheet, cpp_bool aDocumentSheet)
 572 {
 573 }
 574
 575 static void NSAPI nsDocumentObserver_StyleSheetApplicableStateChanged(nsIDocumentObserver *iface,
 576         nsIDocument *aDocument, nsIStyleSheet *aStyleSheet, cpp_bool aApplicable)
 577 {
 578 }
 579
 580 static void NSAPI nsDocumentObserver_StyleRuleChanged(nsIDocumentObserver *iface, nsIDocument *aDocument,
 581         nsIStyleSheet *aStyleSheet, nsIStyleRule *aOldStyleRule, nsIStyleSheet *aNewStyleRule)
 582 {
 583 }
 584
 585 static void NSAPI nsDocumentObserver_StyleRuleAdded(nsIDocumentObserver *iface, nsIDocument *aDocument,
 586         nsIStyleSheet *aStyleSheet, nsIStyleRule *aStyleRule)
 587 {
 588 }
 589
 590 static void NSAPI nsDocumentObserver_StyleRuleRemoved(nsIDocumentObserver *iface, nsIDocument *aDocument,
 591         nsIStyleSheet *aStyleSheet, nsIStyleRule *aStyleRule)
 592 {
 593 }
 594
 595 static void NSAPI nsDocumentObserver_BindToDocument(nsIDocumentObserver *iface, nsIDocument *aDocument,
 596         nsIContent *aContent)
 597 {
 598     HTMLDocumentNode *This = impl_from_nsIDocumentObserver(iface);
 599     nsIDOMHTMLIFrameElement *nsiframe;
 600     nsIDOMHTMLFrameElement *nsframe;
 601     nsIDOMComment *nscomment;
 602     nsIDOMElement *nselem;
 603     nsresult nsres;
 604
 605     TRACE("(%p)\n", This);
 606
 607     nsres = nsIContent_QueryInterface(aContent, &IID_nsIDOMElement, (void**)&nselem);
 608     if(NS_SUCCEEDED(nsres)) {
 609         check_event_attr(This, nselem);
 610         nsIDOMElement_Release(nselem);
 611     }
 612
 613     nsres = nsIContent_QueryInterface(aContent, &IID_nsIDOMComment, (void**)&nscomment);
 614     if(NS_SUCCEEDED(nsres)) {
 615         TRACE("comment node\n");
 616
 617         add_script_runner(This, run_insert_comment, (nsISupports*)nscomment, NULL);
 618         nsIDOMComment_Release(nscomment);
 619     }
 620
 621     nsres = nsIContent_QueryInterface(aContent, &IID_nsIDOMHTMLIFrameElement, (void**)&nsiframe);
 622     if(NS_SUCCEEDED(nsres)) {
 623         TRACE("iframe node\n");
 624
 625         add_script_runner(This, run_bind_to_tree, (nsISupports*)nsiframe, NULL);
 626         nsIDOMHTMLIFrameElement_Release(nsiframe);
 627     }
 628
 629     nsres = nsIContent_QueryInterface(aContent, &IID_nsIDOMHTMLFrameElement, (void**)&nsframe);
 630     if(NS_SUCCEEDED(nsres)) {
 631         TRACE("frame node\n");
 632
 633         add_script_runner(This, run_bind_to_tree, (nsISupports*)nsframe, NULL);
 634         nsIDOMHTMLFrameElement_Release(nsframe);
 635     }
 636 }
 637
 638 static void NSAPI nsDocumentObserver_AttemptToExecuteScript(nsIDocumentObserver *iface, nsIContent *aContent,
 639         nsIParser *aParser, cpp_bool *aBlock)
 640 {
 641     HTMLDocumentNode *This = impl_from_nsIDocumentObserver(iface);
 642     nsIDOMHTMLScriptElement *nsscript;
 643     nsresult nsres;
 644
 645     TRACE("(%p)->(%p %p %p)\n", This, aContent, aParser, aBlock);
 646
 647     nsres = nsIContent_QueryInterface(aContent, &IID_nsIDOMHTMLScriptElement, (void**)&nsscript);
 648     if(NS_SUCCEEDED(nsres)) {
 649         TRACE("script node\n");
 650
 651         add_script_runner(This, run_insert_script, (nsISupports*)nsscript, (nsISupports*)aParser);
 652         nsIDOMHTMLScriptElement_Release(nsscript);
 653     }
 654 }
 655
 656 static const nsIDocumentObserverVtbl nsDocumentObserverVtbl = {
 657     nsDocumentObserver_QueryInterface,
 658     nsDocumentObserver_AddRef,
 659     nsDocumentObserver_Release,
 660     nsDocumentObserver_CharacterDataWillChange,
 661     nsDocumentObserver_CharacterDataChanged,
 662     nsDocumentObserver_AttributeWillChange,
 663     nsDocumentObserver_AttributeChanged,
 664     nsDocumentObserver_ContentAppended,
 665     nsDocumentObserver_ContentInserted,
 666     nsDocumentObserver_ContentRemoved,
 667     nsDocumentObserver_NodeWillBeDestroyed,
 668     nsDocumentObserver_ParentChainChanged,
 669     nsDocumentObserver_BeginUpdate,
 670     nsDocumentObserver_EndUpdate,
 671     nsDocumentObserver_BeginLoad,
 672     nsDocumentObserver_EndLoad,
 673     nsDocumentObserver_ContentStatesChanged,
 674     nsDocumentObserver_DocumentStatesChanged,
 675     nsDocumentObserver_StyleSheetAdded,
 676     nsDocumentObserver_StyleSheetRemoved,
 677     nsDocumentObserver_StyleSheetApplicableStateChanged,
 678     nsDocumentObserver_StyleRuleChanged,
 679     nsDocumentObserver_StyleRuleAdded,
 680     nsDocumentObserver_StyleRuleRemoved,
 681     nsDocumentObserver_BindToDocument,
 682     nsDocumentObserver_AttemptToExecuteScript
 683 };
 684
 685 void init_document_mutation(HTMLDocumentNode *doc)
 686 {
 687     nsIDocument *nsdoc;
 688     nsresult nsres;
 689
 690     doc->nsIDocumentObserver_iface.lpVtbl = &nsDocumentObserverVtbl;
 691
 692     nsres = nsIDOMHTMLDocument_QueryInterface(doc->nsdoc, &IID_nsIDocument, (void**)&nsdoc);
 693     if(NS_FAILED(nsres)) {
 694         ERR("Could not get nsIDocument: %08x\n", nsres);
 695         return;
 696     }
 697
 698     nsIContentUtils_AddDocumentObserver(content_utils, nsdoc, &doc->nsIDocumentObserver_iface);
 699     nsIDocument_Release(nsdoc);
 700 }
 701
 702 void release_document_mutation(HTMLDocumentNode *doc)
 703 {
 704     nsIDocument *nsdoc;
 705     nsresult nsres;
 706
 707     nsres = nsIDOMHTMLDocument_QueryInterface(doc->nsdoc, &IID_nsIDocument, (void**)&nsdoc);
 708     if(NS_FAILED(nsres)) {
 709         ERR("Could not get nsIDocument: %08x\n", nsres);
 710         return;
 711     }
 712
 713     nsIContentUtils_RemoveDocumentObserver(content_utils, nsdoc, &doc->nsIDocumentObserver_iface);
 714     nsIDocument_Release(nsdoc);
 715 }
 716
 717 void init_mutation(nsIComponentManager *component_manager)
 718 {
 719     nsIFactory *factory;
 720     nsresult nsres;
 721
 722     if(!component_manager) {
 723         if(content_utils) {
 724             nsIContentUtils_Release(content_utils);
 725             content_utils = NULL;
 726         }
 727         return;
 728     }
 729
 730     nsres = nsIComponentManager_GetClassObject(component_manager, &NS_ICONTENTUTILS_CID,
 731             &IID_nsIFactory, (void**)&factory);
 732     if(NS_FAILED(nsres)) {
 733         ERR("Could not create nsIContentUtils service: %08x\n", nsres);
 734         return;
 735     }
 736
 737     nsres = nsIFactory_CreateInstance(factory, NULL, &IID_nsIContentUtils, (void**)&content_utils);
 738     nsIFactory_Release(factory);
 739     if(NS_FAILED(nsres))
 740         ERR("Could not create nsIContentUtils instance: %08x\n", nsres);
 741 }