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100 lines
3.6 KiB
C++
100 lines
3.6 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is Mozilla Communicator client code.
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*
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* The Initial Developer of the Original Code is Netscape Communications
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* Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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*/
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#ifndef nsIEventQueueService_h__
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#define nsIEventQueueService_h__
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#include "nsISupports.h"
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#include "prthread.h"
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#include "plevent.h"
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#include "nsIEventQueue.h"
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/* a6cf90dc-15b3-11d2-932e-00805f8add32 */
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#define NS_IEVENTQUEUESERVICE_IID \
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{ 0xa6cf90dc, 0x15b3, 0x11d2, \
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{0x93, 0x2e, 0x00, 0x80, 0x5f, 0x8a, 0xdd, 0x32} }
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/* be761f00-a3b0-11d2-996c-0080c7cb1080 */
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#define NS_EVENTQUEUESERVICE_CID \
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{ 0xbe761f00, 0xa3b0, 0x11d2, \
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{0x99, 0x6c, 0x00, 0x80, 0xc7, 0xcb, 0x10, 0x80} }
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#define NS_EVENTQUEUESERVICE_PROGID "component://netscape/event-queue-service"
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#define NS_EVENTQUEUESERVICE_CLASSNAME "Event Queue Service"
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#define NS_CURRENT_THREAD ((PRThread*)0)
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#define NS_CURRENT_EVENTQ ((nsIEventQueue*)0)
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#define NS_UI_THREAD ((PRThread*)1)
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#define NS_UI_THREAD_EVENTQ ((nsIEventQueue*)1)
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class nsIThread;
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class nsIEventQueueService : public nsISupports
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{
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public:
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static const nsIID& GetIID() { static nsIID iid = NS_IEVENTQUEUESERVICE_IID; return iid; }
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/**
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* Creates and holds a native event queue for the current thread.
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* "Native" queues have an associated callback mechanism which is
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* automatically triggered when an event is posted. See plevent.c for details.
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* @return NS_OK on success, or a host of failure indications
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*/
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NS_IMETHOD CreateThreadEventQueue() = 0;
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/**
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* Creates and hold a monitored event queue for the current thread.
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* "Monitored" queues have no callback processing mechanism.
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* @return NS_OK on success, or a host of failure indications
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*/
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NS_IMETHOD CreateMonitoredThreadEventQueue() = 0;
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/**
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* Somewhat misnamed, this method releases the service's hold on the event
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* queue(s) for this thread. Subsequent attempts to access this thread's
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* queue (GetThreadEventQueue, for example) may fail, though the queue itself
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* will be destroyed only after all references to it are released and the
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* queue itself is no longer actively processing events.
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* @return nonsense.
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*/
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NS_IMETHOD DestroyThreadEventQueue(void) = 0;
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NS_IMETHOD CreateFromIThread(nsIThread *aThread, PRBool aNative,
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nsIEventQueue **aResult) = 0;
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NS_IMETHOD CreateFromPLEventQueue(PLEventQueue* aPLEventQueue, nsIEventQueue** aResult) = 0;
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// Add a new event queue for the current thread, making it the "current"
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// queue. Return that queue in aNewQueue, addrefed.
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NS_IMETHOD PushThreadEventQueue(nsIEventQueue **aNewQueue) = 0;
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// release and disable the queue
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NS_IMETHOD PopThreadEventQueue(nsIEventQueue *aQueue) = 0;
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NS_IMETHOD GetThreadEventQueue(PRThread* aThread, nsIEventQueue** aResult) = 0;
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NS_IMETHOD ResolveEventQueue(nsIEventQueue* queueOrConstant, nsIEventQueue* *resultQueue) = 0;
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};
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#endif /* nsIEventQueueService_h___ */
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