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lightning-sunbird  0.9+nobinonly
nsEventQueueUtils.h
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00001 /* ***** BEGIN LICENSE BLOCK *****
00002  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
00003  *
00004  * The contents of this file are subject to the Mozilla Public License Version
00005  * 1.1 (the "License"); you may not use this file except in compliance with
00006  * the License. You may obtain a copy of the License at
00007  * http://www.mozilla.org/MPL/
00008  *
00009  * Software distributed under the License is distributed on an "AS IS" basis,
00010  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
00011  * for the specific language governing rights and limitations under the
00012  * License.
00013  *
00014  * The Original Code is Mozilla.
00015  *
00016  * The Initial Developer of the Original Code is
00017  * Netscape Communications Corporation.
00018  * Portions created by the Initial Developer are Copyright (C) 2002
00019  * the Initial Developer. All Rights Reserved.
00020  *
00021  * Contributor(s):
00022  *   Darin Fisher <darin@netscape.com>
00023  *
00024  * Alternatively, the contents of this file may be used under the terms of
00025  * either the GNU General Public License Version 2 or later (the "GPL"), or
00026  * 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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00033  * the provisions above, a recipient may use your version of this file under
00034  * the terms of any one of the MPL, the GPL or the LGPL.
00035  *
00036  * ***** END LICENSE BLOCK ***** */
00037 
00038 #ifndef nsEventQueueUtils_h__
00039 #define nsEventQueueUtils_h__
00040 
00041 #include "nsIEventQueueService.h"
00042 #include "nsIServiceManager.h"
00043 #include "nsCOMPtr.h"
00044 
00045 inline nsresult
00046 NS_GetEventQueueService(nsIEventQueueService **result)
00047 {
00048   static NS_DEFINE_CID(kEventQueueServiceCID, NS_EVENTQUEUESERVICE_CID);
00049   return CallGetService(kEventQueueServiceCID, result);
00050 }
00051 
00052 inline nsresult
00053 NS_GetCurrentEventQ(nsIEventQueue **result,
00054                     nsIEventQueueService *serv = nsnull)
00055 {
00056   nsCOMPtr<nsIEventQueueService> eqs;
00057   if (!serv) {
00058     nsresult rv = NS_GetEventQueueService(getter_AddRefs(eqs));
00059     if (NS_FAILED(rv)) return rv;
00060     serv = eqs;
00061   }
00062   return serv->GetThreadEventQueue(NS_CURRENT_THREAD, result);
00063 }
00064 
00065 inline nsresult
00066 NS_GetMainEventQ(nsIEventQueue **result,
00067                  nsIEventQueueService *serv = nsnull)
00068 {
00069   nsCOMPtr<nsIEventQueueService> eqs;
00070   if (!serv) {
00071     nsresult rv = NS_GetEventQueueService(getter_AddRefs(eqs));
00072     if (NS_FAILED(rv)) return rv;
00073     serv = eqs;
00074   }
00075   return serv->GetThreadEventQueue(NS_UI_THREAD, result);
00076 }
00077 
00078 #endif // !nsEventQueueUtils_h__