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lightning-sunbird  0.9+nobinonly
nsPLDOMEvent.cpp
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00001 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
00002 /* ***** BEGIN LICENSE BLOCK *****
00003  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
00004  *
00005  * The contents of this file are subject to the Mozilla Public License Version
00006  * 1.1 (the "License"); you may not use this file except in compliance with
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00009  *
00010  * Software distributed under the License is distributed on an "AS IS" basis,
00011  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00012  * for the specific language governing rights and limitations under the
00013  * License.
00014  *
00015  * The Original Code is mozilla.org code.
00016  *
00017  * The Initial Developer of the Original Code is
00018  * Aaron Leventhal (aaronleventhal@moonset.net)
00019  * Portions created by the Initial Developer are Copyright (C) 2005
00020  * the Initial Developer. All Rights Reserved.
00021  *
00022  * Contributor(s):
00023  *
00024  * Alternatively, the contents of this file may be used under the terms of
00025  * either of the GNU General Public License Version 2 or later (the "GPL"),
00026  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
00027  * in which case the provisions of the GPL or the LGPL are applicable instead
00028  * of those above. If you wish to allow use of your version of this file only
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00036  * ***** END LICENSE BLOCK ***** */
00037 
00038 #include "nsPLDOMEvent.h"
00039 #include "nsEventQueueUtils.h"
00040 #include "nsIDOMEvent.h"
00041 #include "nsIPrivateDOMEvent.h"
00042 #include "nsIDOMDocument.h"
00043 #include "nsIDOMDocumentEvent.h"
00044 #include "nsIDOMEventTarget.h"
00045 
00046 void nsPLDOMEvent::HandleEvent()
00047 {
00048   if (!mEventNode) {
00049     return;
00050   }
00051   
00052   nsCOMPtr<nsIDOMDocument> domDoc;
00053   mEventNode->GetOwnerDocument(getter_AddRefs(domDoc));
00054   nsCOMPtr<nsIDOMDocumentEvent> domEventDoc = do_QueryInterface(domDoc);
00055   if (domEventDoc) {
00056     nsCOMPtr<nsIDOMEvent> domEvent;
00057     domEventDoc->CreateEvent(NS_LITERAL_STRING("Events"),
00058                         getter_AddRefs(domEvent));
00059 
00060     nsCOMPtr<nsIPrivateDOMEvent> privateEvent(do_QueryInterface(domEvent));
00061     if (privateEvent && NS_SUCCEEDED(domEvent->InitEvent(mEventType, PR_TRUE, PR_TRUE))) {
00062       privateEvent->SetTrusted(PR_TRUE);
00063 
00064       nsCOMPtr<nsIDOMEventTarget> target = do_QueryInterface(mEventNode);
00065       PRBool defaultActionEnabled; // This is not used because the caller is async
00066       target->DispatchEvent(domEvent, &defaultActionEnabled);
00067     }
00068   }
00069 }
00070 
00071 nsresult nsPLDOMEvent::PostDOMEvent()
00072 {
00073   nsCOMPtr<nsIEventQueue> eventQueue;
00074   nsresult rv = NS_GetCurrentEventQ(getter_AddRefs(eventQueue));
00075   if (NS_SUCCEEDED(rv)) {
00076     PL_InitEvent(this, nsnull, (PLHandleEventProc) ::HandlePLDOMEvent, (PLDestroyEventProc) ::DestroyPLDOMEvent);
00077     rv = eventQueue->PostEvent(this);
00078   }
00079 
00080   return rv;
00081 }
00082 
00083 static void PR_CALLBACK HandlePLDOMEvent(nsPLDOMEvent* aEvent)
00084 {
00085   aEvent->HandleEvent();
00086 }
00087 
00088 static void PR_CALLBACK DestroyPLDOMEvent(nsPLDOMEvent* aEvent)
00089 {
00090   delete aEvent;
00091 }