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 "htmlscript.h"
  34 #include "htmlevent.h"
  35 #include "binding.h"
  36
  37 #include "wine/debug.h"
  38
  39 WINE_DEFAULT_DEBUG_CHANNEL(mshtml);
  40
  41 #define IE_MAJOR_VERSION 7
  42 #define IE_MINOR_VERSION 0
  43
  44 static const IID NS_ICONTENTUTILS_CID =
  45     {0x762C4AE7,0xB923,0x422F,{0xB9,0x7E,0xB9,0xBF,0xC1,0xEF,0x7B,0xF0}};
  46
  47 static nsIContentUtils *content_utils;
  48
  49 static PRUnichar *handle_insert_comment(HTMLDocumentNode *doc, const PRUnichar *comment)
  50 {
  51     int majorv = 0, minorv = 0;
  52     const PRUnichar *ptr, *end;
  53     PRUnichar *buf;
  54     DWORD len;
  55
  56     enum {
  57         CMP_EQ,
  58         CMP_LT,
  59         CMP_LTE,
  60         CMP_GT,
  61         CMP_GTE
  62     } cmpt = CMP_EQ;
  63
  64     static const PRUnichar endifW[] = {'<','!','[','e','n','d','i','f',']'};
  65
  66     if(comment[0] != '[' || comment[1] != 'i' || comment[2] != 'f')
  67         return NULL;
  68
  69     ptr = comment+3;
  70     while(isspaceW(*ptr))
  71         ptr++;
  72
  73     if(ptr[0] == 'l' && ptr[1] == 't') {
  74         ptr += 2;
  75         if(*ptr == 'e') {
  76             cmpt = CMP_LTE;
  77             ptr++;
  78         }else {
  79             cmpt = CMP_LT;
  80         }
  81     }else if(ptr[0] == 'g' && ptr[1] == 't') {
  82         ptr += 2;
  83         if(*ptr == 'e') {
  84             cmpt = CMP_GTE;
  85             ptr++;
  86         }else {
  87             cmpt = CMP_GT;
  88         }
  89     }
  90
  91     if(!isspaceW(*ptr++))
  92         return NULL;
  93     while(isspaceW(*ptr))
  94         ptr++;
  95
  96     if(ptr[0] != 'I' || ptr[1] != 'E')
  97         return NULL;
  98
  99     ptr +=2;
 100     if(!isspaceW(*ptr++))
 101         return NULL;
 102     while(isspaceW(*ptr))
 103         ptr++;
 104
 105     if(!isdigitW(*ptr))
 106         return NULL;
 107     while(isdigitW(*ptr))
 108         majorv = majorv*10 + (*ptr++ - '0');
 109
 110     if(*ptr == '.') {
 111         ptr++;
 112         if(!isdigitW(*ptr))
 113             return NULL;
 114         while(isdigitW(*ptr))
 115             minorv = minorv*10 + (*ptr++ - '0');
 116     }
 117
 118     while(isspaceW(*ptr))
 119         ptr++;
 120     if(ptr[0] != ']' || ptr[1] != '>')
 121         return NULL;
 122     ptr += 2;
 123
 124     len = strlenW(ptr);
 125     if(len < sizeof(endifW)/sizeof(WCHAR))
 126         return NULL;
 127
 128     end = ptr + len-sizeof(endifW)/sizeof(WCHAR);
 129     if(memcmp(end, endifW, sizeof(endifW)))
 130         return NULL;
 131
 132     switch(cmpt) {
 133     case CMP_EQ:
 134         if(majorv == IE_MAJOR_VERSION && minorv == IE_MINOR_VERSION)
 135             break;
 136         return NULL;
 137     case CMP_LT:
 138         if(majorv > IE_MAJOR_VERSION)
 139             break;
 140         if(majorv == IE_MAJOR_VERSION && minorv > IE_MINOR_VERSION)
 141             break;
 142         return NULL;
 143     case CMP_LTE:
 144         if(majorv > IE_MAJOR_VERSION)
 145             break;
 146         if(majorv == IE_MAJOR_VERSION && minorv >= IE_MINOR_VERSION)
 147             break;
 148         return NULL;
 149     case CMP_GT:
 150         if(majorv < IE_MAJOR_VERSION)
 151             break;
 152         if(majorv == IE_MAJOR_VERSION && minorv < IE_MINOR_VERSION)
 153             break;
 154         return NULL;
 155     case CMP_GTE:
 156         if(majorv < IE_MAJOR_VERSION)
 157             break;
 158         if(majorv == IE_MAJOR_VERSION && minorv <= IE_MINOR_VERSION)
 159             break;
 160         return NULL;
 161     }
 162
 163     buf = heap_alloc((end-ptr+1)*sizeof(WCHAR));
 164     if(!buf)
 165         return NULL;
 166
 167     memcpy(buf, ptr, (end-ptr)*sizeof(WCHAR));
 168     buf[end-ptr] = 0;
 169
 170     return buf;
 171 }
 172
 173 static nsresult run_insert_comment(HTMLDocumentNode *doc, nsISupports *comment_iface, nsISupports *arg2)
 174 {
 175     const PRUnichar *comment;
 176     nsIDOMComment *nscomment;
 177     PRUnichar *replace_html;
 178     nsAString comment_str;
 179     nsresult nsres;
 180
 181     nsres = nsISupports_QueryInterface(comment_iface, &IID_nsIDOMComment, (void**)&nscomment);
 182     if(NS_FAILED(nsres)) {
 183         ERR("Could not get nsIDOMComment iface:%08x\n", nsres);
 184         return nsres;
 185     }
 186
 187     nsAString_Init(&comment_str, NULL);
 188     nsres = nsIDOMComment_GetData(nscomment, &comment_str);
 189     if(NS_FAILED(nsres))
 190         return nsres;
 191
 192     nsAString_GetData(&comment_str, &comment);
 193     replace_html = handle_insert_comment(doc, comment);
 194     nsAString_Finish(&comment_str);
 195
 196     if(replace_html) {
 197         HRESULT hres;
 198
 199         hres = replace_node_by_html(doc->nsdoc, (nsIDOMNode*)nscomment, replace_html);
 200         heap_free(replace_html);
 201         if(FAILED(hres))
 202             nsres = NS_ERROR_FAILURE;
 203     }
 204
 205
 206     nsIDOMComment_Release(nscomment);
 207     return nsres;
 208 }
 209
 210 static nsresult run_bind_to_tree(HTMLDocumentNode *doc, nsISupports *nsiface, nsISupports *arg2)
 211 {
 212     nsIDOMNode *nsnode;
 213     HTMLDOMNode *node;
 214     nsresult nsres;
 215     HRESULT hres;
 216
 217     TRACE("(%p)->(%p)\n", doc, nsiface);
 218
 219     nsres = nsISupports_QueryInterface(nsiface, &IID_nsIDOMNode, (void**)&nsnode);
 220     if(NS_FAILED(nsres))
 221         return nsres;
 222
 223     hres = get_node(doc, nsnode, TRUE, &node);
 224     nsIDOMNode_Release(nsnode);
 225     if(FAILED(hres)) {
 226         ERR("Could not get node\n");
 227         return nsres;
 228     }
 229
 230     if(node->vtbl->bind_to_tree)
 231         node->vtbl->bind_to_tree(node);
 232
 233     node_release(node);
 234     return nsres;
 235 }
 236
 237 /* Calls undocumented 69 cmd of CGID_Explorer */
 238 static void call_explorer_69(HTMLDocumentObj *doc)
 239 {
 240     IOleCommandTarget *olecmd;
 241     VARIANT var;
 242     HRESULT hres;
 243
 244     if(!doc->client)
 245         return;
 246
 247     hres = IOleClientSite_QueryInterface(doc->client, &IID_IOleCommandTarget, (void**)&olecmd);
 248     if(FAILED(hres))
 249         return;
 250
 251     VariantInit(&var);
 252     hres = IOleCommandTarget_Exec(olecmd, &CGID_Explorer, 69, 0, NULL, &var);
 253     IOleCommandTarget_Release(olecmd);
 254     if(SUCCEEDED(hres) && V_VT(&var) != VT_NULL)
 255         FIXME("handle result\n");
 256 }
 257
 258 static void parse_complete(HTMLDocumentObj *doc)
 259 {
 260     TRACE("(%p)\n", doc);
 261
 262     if(doc->usermode == EDITMODE)
 263         init_editor(&doc->basedoc);
 264
 265     call_explorer_69(doc);
 266     if(doc->view_sink)
 267         IAdviseSink_OnViewChange(doc->view_sink, DVASPECT_CONTENT, -1);
 268     call_property_onchanged(&doc->basedoc.cp_propnotif, 1005);
 269     call_explorer_69(doc);
 270
 271     if(doc->is_webbrowser && doc->usermode != EDITMODE && !(doc->basedoc.window->load_flags & BINDING_REFRESH))
 272         IDocObjectService_FireNavigateComplete2(doc->doc_object_service, &doc->basedoc.window->base.IHTMLWindow2_iface, 0);
 273
 274     /* FIXME: IE7 calls EnableModelless(TRUE), EnableModelless(FALSE) and sets interactive state here */
 275 }
 276
 277 static nsresult run_end_load(HTMLDocumentNode *This, nsISupports *arg1, nsISupports *arg2)
 278 {
 279     TRACE("(%p)\n", This);
 280
 281     if(!This->basedoc.doc_obj)
 282         return NS_OK;
 283
 284     if(This == This->basedoc.doc_obj->basedoc.doc_node) {
 285         /*
 286          * This should be done in the worker thread that parses HTML,
 287          * but we don't have such thread (Gecko parses HTML for us).
 288          */
 289         parse_complete(This->basedoc.doc_obj);
 290     }
 291
 292     bind_event_scripts(This);
 293     set_ready_state(This->basedoc.window, READYSTATE_INTERACTIVE);
 294     return NS_OK;
 295 }
 296
 297 static nsresult run_insert_script(HTMLDocumentNode *doc, nsISupports *script_iface, nsISupports *parser_iface)
 298 {
 299     nsIDOMHTMLScriptElement *nsscript;
 300     HTMLScriptElement *script_elem;
 301     nsIParser *nsparser = NULL;
 302     script_queue_entry_t *iter;
 303     HTMLInnerWindow *window;
 304     nsresult nsres;
 305     HRESULT hres;
 306
 307     TRACE("(%p)->(%p)\n", doc, script_iface);
 308
 309     window = doc->window;
 310     if(!window)
 311         return NS_OK;
 312
 313     nsres = nsISupports_QueryInterface(script_iface, &IID_nsIDOMHTMLScriptElement, (void**)&nsscript);
 314     if(NS_FAILED(nsres)) {
 315         ERR("Could not get nsIDOMHTMLScriptElement: %08x\n", nsres);
 316         return nsres;
 317     }
 318
 319     if(parser_iface) {
 320         nsres = nsISupports_QueryInterface(parser_iface, &IID_nsIParser, (void**)&nsparser);
 321         if(NS_FAILED(nsres)) {
 322             ERR("Could not get nsIParser iface: %08x\n", nsres);
 323             nsparser = NULL;
 324         }
 325     }
 326
 327     hres = script_elem_from_nsscript(doc, nsscript, &script_elem);
 328     nsIDOMHTMLScriptElement_Release(nsscript);
 329     if(FAILED(hres))
 330         return NS_ERROR_FAILURE;
 331
 332     if(nsparser) {
 333         nsIParser_BeginEvaluatingParserInsertedScript(nsparser);
 334         window->parser_callback_cnt++;
 335     }
 336
 337     IHTMLWindow2_AddRef(&window->base.IHTMLWindow2_iface);
 338
 339     doc_insert_script(window, script_elem);
 340
 341     while(!list_empty(&window->script_queue)) {
 342         iter = LIST_ENTRY(list_head(&window->script_queue), script_queue_entry_t, entry);
 343         list_remove(&iter->entry);
 344         doc_insert_script(window, iter->script);
 345         IHTMLScriptElement_Release(&iter->script->IHTMLScriptElement_iface);
 346         heap_free(iter);
 347     }
 348
 349     IHTMLWindow2_Release(&window->base.IHTMLWindow2_iface);
 350
 351     if(nsparser) {
 352         window->parser_callback_cnt--;
 353         nsIParser_EndEvaluatingParserInsertedScript(nsparser);
 354         nsIParser_Release(nsparser);
 355     }
 356
 357     IHTMLScriptElement_Release(&script_elem->IHTMLScriptElement_iface);
 358
 359     return NS_OK;
 360 }
 361
 362 typedef struct nsRunnable nsRunnable;
 363
 364 typedef nsresult (*runnable_proc_t)(HTMLDocumentNode*,nsISupports*,nsISupports*);
 365
 366 struct nsRunnable {
 367     nsIRunnable  nsIRunnable_iface;
 368
 369     LONG ref;
 370
 371     runnable_proc_t proc;
 372
 373     HTMLDocumentNode *doc;
 374     nsISupports *arg1;
 375     nsISupports *arg2;
 376 };
 377
 378 static inline nsRunnable *impl_from_nsIRunnable(nsIRunnable *iface)
 379 {
 380     return CONTAINING_RECORD(iface, nsRunnable, nsIRunnable_iface);
 381 }
 382
 383 static nsresult NSAPI nsRunnable_QueryInterface(nsIRunnable *iface,
 384         nsIIDRef riid, void **result)
 385 {
 386     nsRunnable *This = impl_from_nsIRunnable(iface);
 387
 388     if(IsEqualGUID(riid, &IID_nsISupports)) {
 389         TRACE("(%p)->(IID_nsISupports %p)\n", This, result);
 390         *result = &This->nsIRunnable_iface;
 391     }else if(IsEqualGUID(riid, &IID_nsIRunnable)) {
 392         TRACE("(%p)->(IID_nsIRunnable %p)\n", This, result);
 393         *result = &This->nsIRunnable_iface;
 394     }else {
 395         *result = NULL;
 396         WARN("(%p)->(%s %p)\n", This, debugstr_guid(riid), result);
 397         return NS_NOINTERFACE;
 398     }
 399
 400     nsISupports_AddRef((nsISupports*)*result);
 401     return NS_OK;
 402 }
 403
 404 static nsrefcnt NSAPI nsRunnable_AddRef(nsIRunnable *iface)
 405 {
 406     nsRunnable *This = impl_from_nsIRunnable(iface);
 407     LONG ref = InterlockedIncrement(&This->ref);
 408
 409     TRACE("(%p) ref=%d\n", This, ref);
 410
 411     return ref;
 412 }
 413
 414 static nsrefcnt NSAPI nsRunnable_Release(nsIRunnable *iface)
 415 {
 416     nsRunnable *This = impl_from_nsIRunnable(iface);
 417     LONG ref = InterlockedDecrement(&This->ref);
 418
 419     TRACE("(%p) ref=%d\n", This, ref);
 420
 421     if(!ref) {
 422         htmldoc_release(&This->doc->basedoc);
 423         if(This->arg1)
 424             nsISupports_Release(This->arg1);
 425         if(This->arg2)
 426             nsISupports_Release(This->arg2);
 427         heap_free(This);
 428     }
 429
 430     return ref;
 431 }
 432
 433 static nsresult NSAPI nsRunnable_Run(nsIRunnable *iface)
 434 {
 435     nsRunnable *This = impl_from_nsIRunnable(iface);
 436
 437     return This->proc(This->doc, This->arg1, This->arg2);
 438 }
 439
 440 static const nsIRunnableVtbl nsRunnableVtbl = {
 441     nsRunnable_QueryInterface,
 442     nsRunnable_AddRef,
 443     nsRunnable_Release,
 444     nsRunnable_Run
 445 };
 446
 447 static void add_script_runner(HTMLDocumentNode *This, runnable_proc_t proc, nsISupports *arg1, nsISupports *arg2)
 448 {
 449     nsRunnable *runnable;
 450
 451     runnable = heap_alloc_zero(sizeof(*runnable));
 452     if(!runnable)
 453         return;
 454
 455     runnable->nsIRunnable_iface.lpVtbl = &nsRunnableVtbl;
 456     runnable->ref = 1;
 457
 458     htmldoc_addref(&This->basedoc);
 459     runnable->doc = This;
 460     runnable->proc = proc;
 461
 462     if(arg1)
 463         nsISupports_AddRef(arg1);
 464     runnable->arg1 = arg1;
 465
 466     if(arg2)
 467         nsISupports_AddRef(arg2);
 468     runnable->arg2 = arg2;
 469
 470     nsIContentUtils_AddScriptRunner(content_utils, &runnable->nsIRunnable_iface);
 471
 472     nsIRunnable_Release(&runnable->nsIRunnable_iface);
 473 }
 474
 475 static inline HTMLDocumentNode *impl_from_nsIDocumentObserver(nsIDocumentObserver *iface)
 476 {
 477     return CONTAINING_RECORD(iface, HTMLDocumentNode, nsIDocumentObserver_iface);
 478 }
 479
 480 static nsresult NSAPI nsDocumentObserver_QueryInterface(nsIDocumentObserver *iface,
 481         nsIIDRef riid, void **result)
 482 {
 483     HTMLDocumentNode *This = impl_from_nsIDocumentObserver(iface);
 484
 485     if(IsEqualGUID(&IID_nsISupports, riid)) {
 486         TRACE("(%p)->(IID_nsISupports, %p)\n", This, result);
 487         *result = &This->nsIDocumentObserver_iface;
 488     }else if(IsEqualGUID(&IID_nsIMutationObserver, riid)) {
 489         TRACE("(%p)->(IID_nsIMutationObserver %p)\n", This, result);
 490         *result = &This->nsIDocumentObserver_iface;
 491     }else if(IsEqualGUID(&IID_nsIDocumentObserver, riid)) {
 492         TRACE("(%p)->(IID_nsIDocumentObserver %p)\n", This, result);
 493         *result = &This->nsIDocumentObserver_iface;
 494     }else {
 495         *result = NULL;
 496         TRACE("(%p)->(%s %p)\n", This, debugstr_guid(riid), result);
 497         return NS_NOINTERFACE;
 498     }
 499
 500     htmldoc_addref(&This->basedoc);
 501     return NS_OK;
 502 }
 503
 504 static nsrefcnt NSAPI nsDocumentObserver_AddRef(nsIDocumentObserver *iface)
 505 {
 506     HTMLDocumentNode *This = impl_from_nsIDocumentObserver(iface);
 507     return htmldoc_addref(&This->basedoc);
 508 }
 509
 510 static nsrefcnt NSAPI nsDocumentObserver_Release(nsIDocumentObserver *iface)
 511 {
 512     HTMLDocumentNode *This = impl_from_nsIDocumentObserver(iface);
 513     return htmldoc_release(&This->basedoc);
 514 }
 515
 516 static void NSAPI nsDocumentObserver_CharacterDataWillChange(nsIDocumentObserver *iface,
 517         nsIDocument *aDocument, nsIContent *aContent, void /*CharacterDataChangeInfo*/ *aInfo)
 518 {
 519 }
 520
 521 static void NSAPI nsDocumentObserver_CharacterDataChanged(nsIDocumentObserver *iface,
 522         nsIDocument *aDocument, nsIContent *aContent, void /*CharacterDataChangeInfo*/ *aInfo)
 523 {
 524 }
 525
 526 static void NSAPI nsDocumentObserver_AttributeWillChange(nsIDocumentObserver *iface, nsIDocument *aDocument,
 527         nsIContent *aContent, PRInt32 aNameSpaceID, nsIAtom *aAttribute, PRInt32 aModType)
 528 {
 529 }
 530
 531 static void NSAPI nsDocumentObserver_AttributeChanged(nsIDocumentObserver *iface, nsIDocument *aDocument,
 532         nsIContent *aContent, PRInt32 aNameSpaceID, nsIAtom *aAttribute, PRInt32 aModType)
 533 {
 534 }
 535
 536 static void NSAPI nsDocumentObserver_ContentAppended(nsIDocumentObserver *iface, nsIDocument *aDocument,
 537         nsIContent *aContainer, nsIContent *aFirstNewContent, PRInt32 aNewIndexInContainer)
 538 {
 539 }
 540
 541 static void NSAPI nsDocumentObserver_ContentInserted(nsIDocumentObserver *iface, nsIDocument *aDocument,
 542         nsIContent *aContainer, nsIContent *aChild, PRInt32 aIndexInContainer)
 543 {
 544 }
 545
 546 static void NSAPI nsDocumentObserver_ContentRemoved(nsIDocumentObserver *iface, nsIDocument *aDocument,
 547         nsIContent *aContainer, nsIContent *aChild, PRInt32 aIndexInContainer,
 548         nsIContent *aProviousSibling)
 549 {
 550 }
 551
 552 static void NSAPI nsDocumentObserver_NodeWillBeDestroyed(nsIDocumentObserver *iface, const nsINode *aNode)
 553 {
 554 }
 555
 556 static void NSAPI nsDocumentObserver_ParentChainChanged(nsIDocumentObserver *iface, nsIContent *aContent)
 557 {
 558 }
 559
 560 static void NSAPI nsDocumentObserver_BeginUpdate(nsIDocumentObserver *iface, nsIDocument *aDocument,
 561         nsUpdateType aUpdateType)
 562 {
 563 }
 564
 565 static void NSAPI nsDocumentObserver_EndUpdate(nsIDocumentObserver *iface, nsIDocument *aDocument,
 566         nsUpdateType aUpdateType)
 567 {
 568 }
 569
 570 static void NSAPI nsDocumentObserver_BeginLoad(nsIDocumentObserver *iface, nsIDocument *aDocument)
 571 {
 572 }
 573
 574 static void NSAPI nsDocumentObserver_EndLoad(nsIDocumentObserver *iface, nsIDocument *aDocument)
 575 {
 576     HTMLDocumentNode *This = impl_from_nsIDocumentObserver(iface);
 577
 578     TRACE("(%p)\n", This);
 579
 580     if(This->skip_mutation_notif)
 581         return;
 582
 583     This->content_ready = TRUE;
 584     add_script_runner(This, run_end_load, NULL, NULL);
 585 }
 586
 587 static void NSAPI nsDocumentObserver_ContentStatesChanged(nsIDocumentObserver *iface, nsIDocument *aDocument,
 588         nsIContent *aContent, nsEventStates *aStateMask)
 589 {
 590 }
 591
 592 static void NSAPI nsDocumentObserver_DocumentStatesChanged(nsIDocumentObserver *iface, nsIDocument *aDocument,
 593         nsEventStates *aStateMask)
 594 {
 595 }
 596
 597 static void NSAPI nsDocumentObserver_StyleSheetAdded(nsIDocumentObserver *iface, nsIDocument *aDocument,
 598         nsIStyleSheet *aStyleSheet, cpp_bool aDocumentSheet)
 599 {
 600 }
 601
 602 static void NSAPI nsDocumentObserver_StyleSheetRemoved(nsIDocumentObserver *iface, nsIDocument *aDocument,
 603         nsIStyleSheet *aStyleSheet, cpp_bool aDocumentSheet)
 604 {
 605 }
 606
 607 static void NSAPI nsDocumentObserver_StyleSheetApplicableStateChanged(nsIDocumentObserver *iface,
 608         nsIDocument *aDocument, nsIStyleSheet *aStyleSheet, cpp_bool aApplicable)
 609 {
 610 }
 611
 612 static void NSAPI nsDocumentObserver_StyleRuleChanged(nsIDocumentObserver *iface, nsIDocument *aDocument,
 613         nsIStyleSheet *aStyleSheet, nsIStyleRule *aOldStyleRule, nsIStyleSheet *aNewStyleRule)
 614 {
 615 }
 616
 617 static void NSAPI nsDocumentObserver_StyleRuleAdded(nsIDocumentObserver *iface, nsIDocument *aDocument,
 618         nsIStyleSheet *aStyleSheet, nsIStyleRule *aStyleRule)
 619 {
 620 }
 621
 622 static void NSAPI nsDocumentObserver_StyleRuleRemoved(nsIDocumentObserver *iface, nsIDocument *aDocument,
 623         nsIStyleSheet *aStyleSheet, nsIStyleRule *aStyleRule)
 624 {
 625 }
 626
 627 static void NSAPI nsDocumentObserver_BindToDocument(nsIDocumentObserver *iface, nsIDocument *aDocument,
 628         nsIContent *aContent)
 629 {
 630     HTMLDocumentNode *This = impl_from_nsIDocumentObserver(iface);
 631     nsIDOMHTMLIFrameElement *nsiframe;
 632     nsIDOMHTMLFrameElement *nsframe;
 633     nsIDOMHTMLScriptElement *nsscript;
 634     nsIDOMComment *nscomment;
 635     nsIDOMElement *nselem;
 636     nsresult nsres;
 637
 638     TRACE("(%p)\n", This);
 639
 640     nsres = nsIContent_QueryInterface(aContent, &IID_nsIDOMElement, (void**)&nselem);
 641     if(NS_SUCCEEDED(nsres)) {
 642         check_event_attr(This, nselem);
 643         nsIDOMElement_Release(nselem);
 644     }
 645
 646     nsres = nsIContent_QueryInterface(aContent, &IID_nsIDOMComment, (void**)&nscomment);
 647     if(NS_SUCCEEDED(nsres)) {
 648         TRACE("comment node\n");
 649
 650         add_script_runner(This, run_insert_comment, (nsISupports*)nscomment, NULL);
 651         nsIDOMComment_Release(nscomment);
 652         return;
 653     }
 654
 655     nsres = nsIContent_QueryInterface(aContent, &IID_nsIDOMHTMLIFrameElement, (void**)&nsiframe);
 656     if(NS_SUCCEEDED(nsres)) {
 657         TRACE("iframe node\n");
 658
 659         add_script_runner(This, run_bind_to_tree, (nsISupports*)nsiframe, NULL);
 660         nsIDOMHTMLIFrameElement_Release(nsiframe);
 661         return;
 662     }
 663
 664     nsres = nsIContent_QueryInterface(aContent, &IID_nsIDOMHTMLFrameElement, (void**)&nsframe);
 665     if(NS_SUCCEEDED(nsres)) {
 666         TRACE("frame node\n");
 667
 668         add_script_runner(This, run_bind_to_tree, (nsISupports*)nsframe, NULL);
 669         nsIDOMHTMLFrameElement_Release(nsframe);
 670         return;
 671     }
 672
 673     nsres = nsIContent_QueryInterface(aContent, &IID_nsIDOMHTMLScriptElement, (void**)&nsscript);
 674     if(NS_SUCCEEDED(nsres)) {
 675         HTMLScriptElement *script_elem;
 676         HRESULT hres;
 677
 678         TRACE("script element\n");
 679
 680         hres = script_elem_from_nsscript(This, nsscript, &script_elem);
 681         nsIDOMHTMLScriptElement_Release(nsscript);
 682         if(FAILED(hres))
 683             return;
 684
 685         if(script_elem->parse_on_bind)
 686             add_script_runner(This, run_insert_script, (nsISupports*)nsscript, NULL);
 687
 688         IHTMLScriptElement_Release(&script_elem->IHTMLScriptElement_iface);
 689     }
 690 }
 691
 692 static void NSAPI nsDocumentObserver_AttemptToExecuteScript(nsIDocumentObserver *iface, nsIContent *aContent,
 693         nsIParser *aParser, cpp_bool *aBlock)
 694 {
 695     HTMLDocumentNode *This = impl_from_nsIDocumentObserver(iface);
 696     nsIDOMHTMLScriptElement *nsscript;
 697     nsresult nsres;
 698
 699     TRACE("(%p)->(%p %p %p)\n", This, aContent, aParser, aBlock);
 700
 701     nsres = nsIContent_QueryInterface(aContent, &IID_nsIDOMHTMLScriptElement, (void**)&nsscript);
 702     if(NS_SUCCEEDED(nsres)) {
 703         TRACE("script node\n");
 704
 705         add_script_runner(This, run_insert_script, (nsISupports*)nsscript, (nsISupports*)aParser);
 706         nsIDOMHTMLScriptElement_Release(nsscript);
 707     }
 708 }
 709
 710 static const nsIDocumentObserverVtbl nsDocumentObserverVtbl = {
 711     nsDocumentObserver_QueryInterface,
 712     nsDocumentObserver_AddRef,
 713     nsDocumentObserver_Release,
 714     nsDocumentObserver_CharacterDataWillChange,
 715     nsDocumentObserver_CharacterDataChanged,
 716     nsDocumentObserver_AttributeWillChange,
 717     nsDocumentObserver_AttributeChanged,
 718     nsDocumentObserver_ContentAppended,
 719     nsDocumentObserver_ContentInserted,
 720     nsDocumentObserver_ContentRemoved,
 721     nsDocumentObserver_NodeWillBeDestroyed,
 722     nsDocumentObserver_ParentChainChanged,
 723     nsDocumentObserver_BeginUpdate,
 724     nsDocumentObserver_EndUpdate,
 725     nsDocumentObserver_BeginLoad,
 726     nsDocumentObserver_EndLoad,
 727     nsDocumentObserver_ContentStatesChanged,
 728     nsDocumentObserver_DocumentStatesChanged,
 729     nsDocumentObserver_StyleSheetAdded,
 730     nsDocumentObserver_StyleSheetRemoved,
 731     nsDocumentObserver_StyleSheetApplicableStateChanged,
 732     nsDocumentObserver_StyleRuleChanged,
 733     nsDocumentObserver_StyleRuleAdded,
 734     nsDocumentObserver_StyleRuleRemoved,
 735     nsDocumentObserver_BindToDocument,
 736     nsDocumentObserver_AttemptToExecuteScript
 737 };
 738
 739 void init_document_mutation(HTMLDocumentNode *doc)
 740 {
 741     nsIDocument *nsdoc;
 742     nsresult nsres;
 743
 744     doc->nsIDocumentObserver_iface.lpVtbl = &nsDocumentObserverVtbl;
 745
 746     nsres = nsIDOMHTMLDocument_QueryInterface(doc->nsdoc, &IID_nsIDocument, (void**)&nsdoc);
 747     if(NS_FAILED(nsres)) {
 748         ERR("Could not get nsIDocument: %08x\n", nsres);
 749         return;
 750     }
 751
 752     nsIContentUtils_AddDocumentObserver(content_utils, nsdoc, &doc->nsIDocumentObserver_iface);
 753     nsIDocument_Release(nsdoc);
 754 }
 755
 756 void release_document_mutation(HTMLDocumentNode *doc)
 757 {
 758     nsIDocument *nsdoc;
 759     nsresult nsres;
 760
 761     nsres = nsIDOMHTMLDocument_QueryInterface(doc->nsdoc, &IID_nsIDocument, (void**)&nsdoc);
 762     if(NS_FAILED(nsres)) {
 763         ERR("Could not get nsIDocument: %08x\n", nsres);
 764         return;
 765     }
 766
 767     nsIContentUtils_RemoveDocumentObserver(content_utils, nsdoc, &doc->nsIDocumentObserver_iface);
 768     nsIDocument_Release(nsdoc);
 769 }
 770
 771 void init_mutation(nsIComponentManager *component_manager)
 772 {
 773     nsIFactory *factory;
 774     nsresult nsres;
 775
 776     if(!component_manager) {
 777         if(content_utils) {
 778             nsIContentUtils_Release(content_utils);
 779             content_utils = NULL;
 780         }
 781         return;
 782     }
 783
 784     nsres = nsIComponentManager_GetClassObject(component_manager, &NS_ICONTENTUTILS_CID,
 785             &IID_nsIFactory, (void**)&factory);
 786     if(NS_FAILED(nsres)) {
 787         ERR("Could not create nsIContentUtils service: %08x\n", nsres);
 788         return;
 789     }
 790
 791     nsres = nsIFactory_CreateInstance(factory, NULL, &IID_nsIContentUtils, (void**)&content_utils);
 792     nsIFactory_Release(factory);
 793     if(NS_FAILED(nsres))
 794         ERR("Could not create nsIContentUtils instance: %08x\n", nsres);
 795 }