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diff --git a/src/libs/xpcom18a4/xpcom/threads/nsEventQueue.h b/src/libs/xpcom18a4/xpcom/threads/nsEventQueue.h
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+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* ***** BEGIN LICENSE BLOCK *****
+ * Version: MPL 1.1/GPL 2.0/LGPL 2.1
+ *
+ * The contents of this file are subject to the Mozilla Public License Version
+ * 1.1 (the "License"); you may not use this file except in compliance with
+ * the License. You may obtain a copy of the License at
+ * http://www.mozilla.org/MPL/
+ *
+ * Software distributed under the License is distributed on an "AS IS" basis,
+ * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
+ * for the specific language governing rights and limitations under the
+ * License.
+ *
+ * The Original Code is Mozilla Communicator client code.
+ *
+ * The Initial Developer of the Original Code is
+ * Netscape Communications Corporation.
+ * Portions created by the Initial Developer are Copyright (C) 1998
+ * the Initial Developer. All Rights Reserved.
+ *
+ * Contributor(s):
+ * Pierre Phaneuf <pp@ludusdesign.com>
+ *
+ * Alternatively, the contents of this file may be used under the terms of
+ * either of the GNU General Public License Version 2 or later (the "GPL"),
+ * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
+ * in which case the provisions of the GPL or the LGPL are applicable instead
+ * of those above. If you wish to allow use of your version of this file only
+ * under the terms of either the GPL or the LGPL, and not to allow others to
+ * use your version of this file under the terms of the MPL, indicate your
+ * decision by deleting the provisions above and replace them with the notice
+ * and other provisions required by the GPL or the LGPL. If you do not delete
+ * the provisions above, a recipient may use your version of this file under
+ * the terms of any one of the MPL, the GPL or the LGPL.
+ *
+ * ***** END LICENSE BLOCK ***** */
+
+#include "prmon.h"
+#include "nsIEventQueue.h"
+#include "nsPIEventQueueChain.h"
+
+class nsEventQueueImpl : public nsIEventQueue,
+ public nsPIEventQueueChain
+{
+public:
+ nsEventQueueImpl();
+
+ NS_DECL_ISUPPORTS
+ NS_DECL_NSIEVENTTARGET
+ NS_DECL_NSIEVENTQUEUE
+
+ // Helpers
+ static NS_METHOD Create(nsISupports* outer, const nsIID& aIID, void* *aInstancePtr);
+
+ static const nsCID& CID() { static nsCID cid = NS_EVENTQUEUE_CID; return cid; }
+
+ // nsPIEventQueueChain interface
+ NS_IMETHOD AppendQueue(nsIEventQueue *aQueue);
+ NS_IMETHOD Unlink();
+ NS_IMETHOD GetYoungest(nsIEventQueue **aQueue);
+ NS_IMETHOD GetYoungestActive(nsIEventQueue **aQueue);
+ NS_IMETHOD SetYounger(nsPIEventQueueChain *aQueue);
+ NS_IMETHOD GetYounger(nsIEventQueue **aQueue);
+ NS_IMETHOD SetElder(nsPIEventQueueChain *aQueue);
+ NS_IMETHOD GetElder(nsIEventQueue **aQueue);
+
+private:
+ ~nsEventQueueImpl();
+
+ PLEventQueue *mEventQueue;
+ PRBool mAcceptingEvents, // accept new events or pass them on?
+ mCouldHaveEvents; // accepting new ones, or still have old ones?
+ nsCOMPtr<nsPIEventQueueChain> mElderQueue; // younger can hold on to elder
+ nsPIEventQueueChain *mYoungerQueue; // but elder can't hold on to younger
+
+ void NotifyObservers(const char *aTopic);
+
+ void CheckForDeactivation() {
+ if (mCouldHaveEvents && !mAcceptingEvents && !PL_EventAvailable(mEventQueue)) {
+ if (PL_IsQueueOnCurrentThread(mEventQueue)) {
+ mCouldHaveEvents = PR_FALSE;
+ NS_RELEASE_THIS(); // balance ADDREF from the constructor
+ } else
+ NS_ERROR("CheckForDeactivation called from wrong thread!");
+ }
+ }
+};
+