pjs/xpcom/threads/nsIEventQueueService.h

100 строки
3.6 KiB
C
Исходник Обычный вид История

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape 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/NPL/
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*
* 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.
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*
* The Original Code is Mozilla Communicator client code.
*
* The Initial Developer of the Original Code is Netscape Communications
* Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
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*/
#ifndef nsIEventQueueService_h__
#define nsIEventQueueService_h__
#include "nsISupports.h"
#include "prthread.h"
#include "plevent.h"
#include "nsIEventQueue.h"
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/* a6cf90dc-15b3-11d2-932e-00805f8add32 */
#define NS_IEVENTQUEUESERVICE_IID \
{ 0xa6cf90dc, 0x15b3, 0x11d2, \
{0x93, 0x2e, 0x00, 0x80, 0x5f, 0x8a, 0xdd, 0x32} }
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/* be761f00-a3b0-11d2-996c-0080c7cb1080 */
#define NS_EVENTQUEUESERVICE_CID \
{ 0xbe761f00, 0xa3b0, 0x11d2, \
{0x99, 0x6c, 0x00, 0x80, 0xc7, 0xcb, 0x10, 0x80} }
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#define NS_EVENTQUEUESERVICE_PROGID "component://netscape/event-queue-service"
#define NS_EVENTQUEUESERVICE_CLASSNAME "Event Queue Service"
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#define NS_CURRENT_THREAD ((PRThread*)0)
#define NS_CURRENT_EVENTQ ((nsIEventQueue*)0)
#define NS_UI_THREAD ((PRThread*)1)
#define NS_UI_THREAD_EVENTQ ((nsIEventQueue*)1)
class nsIThread;
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class nsIEventQueueService : public nsISupports
{
public:
static const nsIID& GetIID() { static nsIID iid = NS_IEVENTQUEUESERVICE_IID; return iid; }
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/**
* Creates and holds a native event queue for the current thread.
* "Native" queues have an associated callback mechanism which is
* automatically triggered when an event is posted. See plevent.c for details.
* @return NS_OK on success, or a host of failure indications
*/
NS_IMETHOD CreateThreadEventQueue() = 0;
/**
* Creates and hold a monitored event queue for the current thread.
* "Monitored" queues have no callback processing mechanism.
* @return NS_OK on success, or a host of failure indications
*/
NS_IMETHOD CreateMonitoredThreadEventQueue() = 0;
/**
* Somewhat misnamed, this method releases the service's hold on the event
* queue(s) for this thread. Subsequent attempts to access this thread's
* queue (GetThreadEventQueue, for example) may fail, though the queue itself
* will be destroyed only after all references to it are released and the
* queue itself is no longer actively processing events.
* @return nonsense.
*/
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NS_IMETHOD DestroyThreadEventQueue(void) = 0;
NS_IMETHOD CreateFromIThread(nsIThread *aThread, PRBool aNative,
nsIEventQueue **aResult) = 0;
NS_IMETHOD CreateFromPLEventQueue(PLEventQueue* aPLEventQueue, nsIEventQueue** aResult) = 0;
// Add a new event queue for the current thread, making it the "current"
// queue. Return that queue in aNewQueue, addrefed.
NS_IMETHOD PushThreadEventQueue(nsIEventQueue **aNewQueue) = 0;
// release and disable the queue
NS_IMETHOD PopThreadEventQueue(nsIEventQueue *aQueue) = 0;
NS_IMETHOD GetThreadEventQueue(PRThread* aThread, nsIEventQueue** aResult) = 0;
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NS_IMETHOD ResolveEventQueue(nsIEventQueue* queueOrConstant, nsIEventQueue* *resultQueue) = 0;
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};
#endif /* nsIEventQueueService_h___ */