2 * Copyright 2008 Jacek Caban for CodeWeavers
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.
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.
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
32 #include "mshtml_private.h"
33 #include "htmlscript.h"
34 #include "htmlevent.h"
37 #include "wine/debug.h"
39 WINE_DEFAULT_DEBUG_CHANNEL(mshtml);
41 #define IE_MAJOR_VERSION 7
42 #define IE_MINOR_VERSION 0
44 static const IID NS_ICONTENTUTILS_CID =
45 {0x762C4AE7,0xB923,0x422F,{0xB9,0x7E,0xB9,0xBF,0xC1,0xEF,0x7B,0xF0}};
47 static nsIContentUtils *content_utils;
49 static PRUnichar *handle_insert_comment(HTMLDocumentNode *doc, const PRUnichar *comment)
51 int majorv = 0, minorv = 0;
52 const PRUnichar *ptr, *end;
64 static const PRUnichar endifW[] = {'<','!','[','e','n','d','i','f',']'};
66 if(comment[0] != '[' || comment[1] != 'i' || comment[2] != 'f')
73 if(ptr[0] == 'l' && ptr[1] == 't') {
81 }else if(ptr[0] == 'g' && ptr[1] == 't') {
96 if(ptr[0] != 'I' || ptr[1] != 'E')
100 if(!isspaceW(*ptr++))
102 while(isspaceW(*ptr))
107 while(isdigitW(*ptr))
108 majorv = majorv*10 + (*ptr++ - '0');
114 while(isdigitW(*ptr))
115 minorv = minorv*10 + (*ptr++ - '0');
118 while(isspaceW(*ptr))
120 if(ptr[0] != ']' || ptr[1] != '>')
125 if(len < sizeof(endifW)/sizeof(WCHAR))
128 end = ptr + len-sizeof(endifW)/sizeof(WCHAR);
129 if(memcmp(end, endifW, sizeof(endifW)))
134 if(majorv == IE_MAJOR_VERSION && minorv == IE_MINOR_VERSION)
138 if(majorv > IE_MAJOR_VERSION)
140 if(majorv == IE_MAJOR_VERSION && minorv > IE_MINOR_VERSION)
144 if(majorv > IE_MAJOR_VERSION)
146 if(majorv == IE_MAJOR_VERSION && minorv >= IE_MINOR_VERSION)
150 if(majorv < IE_MAJOR_VERSION)
152 if(majorv == IE_MAJOR_VERSION && minorv < IE_MINOR_VERSION)
156 if(majorv < IE_MAJOR_VERSION)
158 if(majorv == IE_MAJOR_VERSION && minorv <= IE_MINOR_VERSION)
163 buf = heap_alloc((end-ptr+1)*sizeof(WCHAR));
167 memcpy(buf, ptr, (end-ptr)*sizeof(WCHAR));
173 static nsresult run_insert_comment(HTMLDocumentNode *doc, nsISupports *comment_iface, nsISupports *arg2)
175 const PRUnichar *comment;
176 nsIDOMComment *nscomment;
177 PRUnichar *replace_html;
178 nsAString comment_str;
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);
187 nsAString_Init(&comment_str, NULL);
188 nsres = nsIDOMComment_GetData(nscomment, &comment_str);
192 nsAString_GetData(&comment_str, &comment);
193 replace_html = handle_insert_comment(doc, comment);
194 nsAString_Finish(&comment_str);
199 hres = replace_node_by_html(doc->nsdoc, (nsIDOMNode*)nscomment, replace_html);
200 heap_free(replace_html);
202 nsres = NS_ERROR_FAILURE;
206 nsIDOMComment_Release(nscomment);
210 static nsresult run_bind_to_tree(HTMLDocumentNode *doc, nsISupports *nsiface, nsISupports *arg2)
217 TRACE("(%p)->(%p)\n", doc, nsiface);
219 nsres = nsISupports_QueryInterface(nsiface, &IID_nsIDOMNode, (void**)&nsnode);
223 hres = get_node(doc, nsnode, TRUE, &node);
224 nsIDOMNode_Release(nsnode);
226 ERR("Could not get node\n");
230 if(node->vtbl->bind_to_tree)
231 node->vtbl->bind_to_tree(node);
237 /* Calls undocumented 69 cmd of CGID_Explorer */
238 static void call_explorer_69(HTMLDocumentObj *doc)
240 IOleCommandTarget *olecmd;
247 hres = IOleClientSite_QueryInterface(doc->client, &IID_IOleCommandTarget, (void**)&olecmd);
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");
258 static void parse_complete(HTMLDocumentObj *doc)
260 TRACE("(%p)\n", doc);
262 if(doc->usermode == EDITMODE)
263 init_editor(&doc->basedoc);
265 call_explorer_69(doc);
267 IAdviseSink_OnViewChange(doc->view_sink, DVASPECT_CONTENT, -1);
268 call_property_onchanged(&doc->basedoc.cp_propnotif, 1005);
269 call_explorer_69(doc);
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);
274 /* FIXME: IE7 calls EnableModelless(TRUE), EnableModelless(FALSE) and sets interactive state here */
277 static nsresult run_end_load(HTMLDocumentNode *This, nsISupports *arg1, nsISupports *arg2)
279 TRACE("(%p)\n", This);
281 if(!This->basedoc.doc_obj)
284 if(This == This->basedoc.doc_obj->basedoc.doc_node) {
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).
289 parse_complete(This->basedoc.doc_obj);
292 bind_event_scripts(This);
293 set_ready_state(This->basedoc.window, READYSTATE_INTERACTIVE);
297 static nsresult run_insert_script(HTMLDocumentNode *doc, nsISupports *script_iface, nsISupports *parser_iface)
299 nsIDOMHTMLScriptElement *nsscript;
300 HTMLScriptElement *script_elem;
301 nsIParser *nsparser = NULL;
302 script_queue_entry_t *iter;
303 HTMLInnerWindow *window;
307 TRACE("(%p)->(%p)\n", doc, script_iface);
309 window = doc->window;
313 nsres = nsISupports_QueryInterface(script_iface, &IID_nsIDOMHTMLScriptElement, (void**)&nsscript);
314 if(NS_FAILED(nsres)) {
315 ERR("Could not get nsIDOMHTMLScriptElement: %08x\n", nsres);
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);
327 hres = script_elem_from_nsscript(doc, nsscript, &script_elem);
328 nsIDOMHTMLScriptElement_Release(nsscript);
330 return NS_ERROR_FAILURE;
333 nsIParser_BeginEvaluatingParserInsertedScript(nsparser);
334 window->parser_callback_cnt++;
337 IHTMLWindow2_AddRef(&window->base.IHTMLWindow2_iface);
339 doc_insert_script(window, script_elem);
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);
349 IHTMLWindow2_Release(&window->base.IHTMLWindow2_iface);
352 window->parser_callback_cnt--;
353 nsIParser_EndEvaluatingParserInsertedScript(nsparser);
354 nsIParser_Release(nsparser);
357 IHTMLScriptElement_Release(&script_elem->IHTMLScriptElement_iface);
362 typedef struct nsRunnable nsRunnable;
364 typedef nsresult (*runnable_proc_t)(HTMLDocumentNode*,nsISupports*,nsISupports*);
367 nsIRunnable nsIRunnable_iface;
371 runnable_proc_t proc;
373 HTMLDocumentNode *doc;
378 static inline nsRunnable *impl_from_nsIRunnable(nsIRunnable *iface)
380 return CONTAINING_RECORD(iface, nsRunnable, nsIRunnable_iface);
383 static nsresult NSAPI nsRunnable_QueryInterface(nsIRunnable *iface,
384 nsIIDRef riid, void **result)
386 nsRunnable *This = impl_from_nsIRunnable(iface);
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;
396 WARN("(%p)->(%s %p)\n", This, debugstr_guid(riid), result);
397 return NS_NOINTERFACE;
400 nsISupports_AddRef((nsISupports*)*result);
404 static nsrefcnt NSAPI nsRunnable_AddRef(nsIRunnable *iface)
406 nsRunnable *This = impl_from_nsIRunnable(iface);
407 LONG ref = InterlockedIncrement(&This->ref);
409 TRACE("(%p) ref=%d\n", This, ref);
414 static nsrefcnt NSAPI nsRunnable_Release(nsIRunnable *iface)
416 nsRunnable *This = impl_from_nsIRunnable(iface);
417 LONG ref = InterlockedDecrement(&This->ref);
419 TRACE("(%p) ref=%d\n", This, ref);
422 htmldoc_release(&This->doc->basedoc);
424 nsISupports_Release(This->arg1);
426 nsISupports_Release(This->arg2);
433 static nsresult NSAPI nsRunnable_Run(nsIRunnable *iface)
435 nsRunnable *This = impl_from_nsIRunnable(iface);
437 return This->proc(This->doc, This->arg1, This->arg2);
440 static const nsIRunnableVtbl nsRunnableVtbl = {
441 nsRunnable_QueryInterface,
447 static void add_script_runner(HTMLDocumentNode *This, runnable_proc_t proc, nsISupports *arg1, nsISupports *arg2)
449 nsRunnable *runnable;
451 runnable = heap_alloc_zero(sizeof(*runnable));
455 runnable->nsIRunnable_iface.lpVtbl = &nsRunnableVtbl;
458 htmldoc_addref(&This->basedoc);
459 runnable->doc = This;
460 runnable->proc = proc;
463 nsISupports_AddRef(arg1);
464 runnable->arg1 = arg1;
467 nsISupports_AddRef(arg2);
468 runnable->arg2 = arg2;
470 nsIContentUtils_AddScriptRunner(content_utils, &runnable->nsIRunnable_iface);
472 nsIRunnable_Release(&runnable->nsIRunnable_iface);
475 static inline HTMLDocumentNode *impl_from_nsIDocumentObserver(nsIDocumentObserver *iface)
477 return CONTAINING_RECORD(iface, HTMLDocumentNode, nsIDocumentObserver_iface);
480 static nsresult NSAPI nsDocumentObserver_QueryInterface(nsIDocumentObserver *iface,
481 nsIIDRef riid, void **result)
483 HTMLDocumentNode *This = impl_from_nsIDocumentObserver(iface);
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;
496 TRACE("(%p)->(%s %p)\n", This, debugstr_guid(riid), result);
497 return NS_NOINTERFACE;
500 htmldoc_addref(&This->basedoc);
504 static nsrefcnt NSAPI nsDocumentObserver_AddRef(nsIDocumentObserver *iface)
506 HTMLDocumentNode *This = impl_from_nsIDocumentObserver(iface);
507 return htmldoc_addref(&This->basedoc);
510 static nsrefcnt NSAPI nsDocumentObserver_Release(nsIDocumentObserver *iface)
512 HTMLDocumentNode *This = impl_from_nsIDocumentObserver(iface);
513 return htmldoc_release(&This->basedoc);
516 static void NSAPI nsDocumentObserver_CharacterDataWillChange(nsIDocumentObserver *iface,
517 nsIDocument *aDocument, nsIContent *aContent, void /*CharacterDataChangeInfo*/ *aInfo)
521 static void NSAPI nsDocumentObserver_CharacterDataChanged(nsIDocumentObserver *iface,
522 nsIDocument *aDocument, nsIContent *aContent, void /*CharacterDataChangeInfo*/ *aInfo)
526 static void NSAPI nsDocumentObserver_AttributeWillChange(nsIDocumentObserver *iface, nsIDocument *aDocument,
527 nsIContent *aContent, PRInt32 aNameSpaceID, nsIAtom *aAttribute, PRInt32 aModType)
531 static void NSAPI nsDocumentObserver_AttributeChanged(nsIDocumentObserver *iface, nsIDocument *aDocument,
532 nsIContent *aContent, PRInt32 aNameSpaceID, nsIAtom *aAttribute, PRInt32 aModType)
536 static void NSAPI nsDocumentObserver_ContentAppended(nsIDocumentObserver *iface, nsIDocument *aDocument,
537 nsIContent *aContainer, nsIContent *aFirstNewContent, PRInt32 aNewIndexInContainer)
541 static void NSAPI nsDocumentObserver_ContentInserted(nsIDocumentObserver *iface, nsIDocument *aDocument,
542 nsIContent *aContainer, nsIContent *aChild, PRInt32 aIndexInContainer)
546 static void NSAPI nsDocumentObserver_ContentRemoved(nsIDocumentObserver *iface, nsIDocument *aDocument,
547 nsIContent *aContainer, nsIContent *aChild, PRInt32 aIndexInContainer,
548 nsIContent *aProviousSibling)
552 static void NSAPI nsDocumentObserver_NodeWillBeDestroyed(nsIDocumentObserver *iface, const nsINode *aNode)
556 static void NSAPI nsDocumentObserver_ParentChainChanged(nsIDocumentObserver *iface, nsIContent *aContent)
560 static void NSAPI nsDocumentObserver_BeginUpdate(nsIDocumentObserver *iface, nsIDocument *aDocument,
561 nsUpdateType aUpdateType)
565 static void NSAPI nsDocumentObserver_EndUpdate(nsIDocumentObserver *iface, nsIDocument *aDocument,
566 nsUpdateType aUpdateType)
570 static void NSAPI nsDocumentObserver_BeginLoad(nsIDocumentObserver *iface, nsIDocument *aDocument)
574 static void NSAPI nsDocumentObserver_EndLoad(nsIDocumentObserver *iface, nsIDocument *aDocument)
576 HTMLDocumentNode *This = impl_from_nsIDocumentObserver(iface);
578 TRACE("(%p)\n", This);
580 if(This->skip_mutation_notif)
583 This->content_ready = TRUE;
584 add_script_runner(This, run_end_load, NULL, NULL);
587 static void NSAPI nsDocumentObserver_ContentStatesChanged(nsIDocumentObserver *iface, nsIDocument *aDocument,
588 nsIContent *aContent, nsEventStates *aStateMask)
592 static void NSAPI nsDocumentObserver_DocumentStatesChanged(nsIDocumentObserver *iface, nsIDocument *aDocument,
593 nsEventStates *aStateMask)
597 static void NSAPI nsDocumentObserver_StyleSheetAdded(nsIDocumentObserver *iface, nsIDocument *aDocument,
598 nsIStyleSheet *aStyleSheet, cpp_bool aDocumentSheet)
602 static void NSAPI nsDocumentObserver_StyleSheetRemoved(nsIDocumentObserver *iface, nsIDocument *aDocument,
603 nsIStyleSheet *aStyleSheet, cpp_bool aDocumentSheet)
607 static void NSAPI nsDocumentObserver_StyleSheetApplicableStateChanged(nsIDocumentObserver *iface,
608 nsIDocument *aDocument, nsIStyleSheet *aStyleSheet, cpp_bool aApplicable)
612 static void NSAPI nsDocumentObserver_StyleRuleChanged(nsIDocumentObserver *iface, nsIDocument *aDocument,
613 nsIStyleSheet *aStyleSheet, nsIStyleRule *aOldStyleRule, nsIStyleSheet *aNewStyleRule)
617 static void NSAPI nsDocumentObserver_StyleRuleAdded(nsIDocumentObserver *iface, nsIDocument *aDocument,
618 nsIStyleSheet *aStyleSheet, nsIStyleRule *aStyleRule)
622 static void NSAPI nsDocumentObserver_StyleRuleRemoved(nsIDocumentObserver *iface, nsIDocument *aDocument,
623 nsIStyleSheet *aStyleSheet, nsIStyleRule *aStyleRule)
627 static void NSAPI nsDocumentObserver_BindToDocument(nsIDocumentObserver *iface, nsIDocument *aDocument,
628 nsIContent *aContent)
630 HTMLDocumentNode *This = impl_from_nsIDocumentObserver(iface);
631 nsIDOMHTMLIFrameElement *nsiframe;
632 nsIDOMHTMLFrameElement *nsframe;
633 nsIDOMHTMLScriptElement *nsscript;
634 nsIDOMComment *nscomment;
635 nsIDOMElement *nselem;
638 TRACE("(%p)\n", This);
640 nsres = nsIContent_QueryInterface(aContent, &IID_nsIDOMElement, (void**)&nselem);
641 if(NS_SUCCEEDED(nsres)) {
642 check_event_attr(This, nselem);
643 nsIDOMElement_Release(nselem);
646 nsres = nsIContent_QueryInterface(aContent, &IID_nsIDOMComment, (void**)&nscomment);
647 if(NS_SUCCEEDED(nsres)) {
648 TRACE("comment node\n");
650 add_script_runner(This, run_insert_comment, (nsISupports*)nscomment, NULL);
651 nsIDOMComment_Release(nscomment);
655 nsres = nsIContent_QueryInterface(aContent, &IID_nsIDOMHTMLIFrameElement, (void**)&nsiframe);
656 if(NS_SUCCEEDED(nsres)) {
657 TRACE("iframe node\n");
659 add_script_runner(This, run_bind_to_tree, (nsISupports*)nsiframe, NULL);
660 nsIDOMHTMLIFrameElement_Release(nsiframe);
664 nsres = nsIContent_QueryInterface(aContent, &IID_nsIDOMHTMLFrameElement, (void**)&nsframe);
665 if(NS_SUCCEEDED(nsres)) {
666 TRACE("frame node\n");
668 add_script_runner(This, run_bind_to_tree, (nsISupports*)nsframe, NULL);
669 nsIDOMHTMLFrameElement_Release(nsframe);
673 nsres = nsIContent_QueryInterface(aContent, &IID_nsIDOMHTMLScriptElement, (void**)&nsscript);
674 if(NS_SUCCEEDED(nsres)) {
675 HTMLScriptElement *script_elem;
678 TRACE("script element\n");
680 hres = script_elem_from_nsscript(This, nsscript, &script_elem);
681 nsIDOMHTMLScriptElement_Release(nsscript);
685 if(script_elem->parse_on_bind)
686 add_script_runner(This, run_insert_script, (nsISupports*)nsscript, NULL);
688 IHTMLScriptElement_Release(&script_elem->IHTMLScriptElement_iface);
692 static void NSAPI nsDocumentObserver_AttemptToExecuteScript(nsIDocumentObserver *iface, nsIContent *aContent,
693 nsIParser *aParser, cpp_bool *aBlock)
695 HTMLDocumentNode *This = impl_from_nsIDocumentObserver(iface);
696 nsIDOMHTMLScriptElement *nsscript;
699 TRACE("(%p)->(%p %p %p)\n", This, aContent, aParser, aBlock);
701 nsres = nsIContent_QueryInterface(aContent, &IID_nsIDOMHTMLScriptElement, (void**)&nsscript);
702 if(NS_SUCCEEDED(nsres)) {
703 TRACE("script node\n");
705 add_script_runner(This, run_insert_script, (nsISupports*)nsscript, (nsISupports*)aParser);
706 nsIDOMHTMLScriptElement_Release(nsscript);
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
739 void init_document_mutation(HTMLDocumentNode *doc)
744 doc->nsIDocumentObserver_iface.lpVtbl = &nsDocumentObserverVtbl;
746 nsres = nsIDOMHTMLDocument_QueryInterface(doc->nsdoc, &IID_nsIDocument, (void**)&nsdoc);
747 if(NS_FAILED(nsres)) {
748 ERR("Could not get nsIDocument: %08x\n", nsres);
752 nsIContentUtils_AddDocumentObserver(content_utils, nsdoc, &doc->nsIDocumentObserver_iface);
753 nsIDocument_Release(nsdoc);
756 void release_document_mutation(HTMLDocumentNode *doc)
761 nsres = nsIDOMHTMLDocument_QueryInterface(doc->nsdoc, &IID_nsIDocument, (void**)&nsdoc);
762 if(NS_FAILED(nsres)) {
763 ERR("Could not get nsIDocument: %08x\n", nsres);
767 nsIContentUtils_RemoveDocumentObserver(content_utils, nsdoc, &doc->nsIDocumentObserver_iface);
768 nsIDocument_Release(nsdoc);
771 void init_mutation(nsIComponentManager *component_manager)
776 if(!component_manager) {
778 nsIContentUtils_Release(content_utils);
779 content_utils = NULL;
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);
791 nsres = nsIFactory_CreateInstance(factory, NULL, &IID_nsIContentUtils, (void**)&content_utils);
792 nsIFactory_Release(factory);
794 ERR("Could not create nsIContentUtils instance: %08x\n", nsres);