зеркало из https://github.com/mozilla/pjs.git
135 строки
3.5 KiB
C++
135 строки
3.5 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 License
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* Version 1.0 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS IS"
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* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
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* the License for the specific language governing rights and limitations
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* 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 Copyright (C) 1998
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* Netscape Communications Corporation. All Rights Reserved.
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*/
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#ifndef nsEventQueueService_h__
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#define nsEventQueueService_h__
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#include "nsIEventQueueService.h"
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#include "nsHashtable.h"
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class nsIEventQueue;
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////////////////////////////////////////////////////////////////////////////////
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// XXX move to nsID.h or nsHashtable.h? (copied from nsComponentManager.cpp)
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class ThreadKey: public nsHashKey {
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private:
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const PRThread* id;
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public:
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ThreadKey(const PRThread* aID) {
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id = aID;
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}
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PRUint32 HashValue(void) const {
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return (PRUint32)id;
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}
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PRBool Equals(const nsHashKey *aKey) const {
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return (id == ((const ThreadKey *) aKey)->id);
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}
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nsHashKey *Clone(void) const {
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return new ThreadKey(id);
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}
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};
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////////////////////////////////////////////////////////////////////////////////
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/* This class is used with the EventQueueEntries to allow us to nest
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event queues */
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class EventQueueStack
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{
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public:
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EventQueueStack(EventQueueStack* next = NULL);
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~EventQueueStack();
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nsIEventQueue* GetEventQueue();
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EventQueueStack* GetNext();
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void SetNext(EventQueueStack* aStack);
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private:
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nsIEventQueue* mEventQueue;
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EventQueueStack* mNextQueue;
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};
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////////////////////////////////////////////////////////////////////////////////
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/*
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* This class maintains the data associated with each entry in the EventQueue
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* service's hash table...
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*
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* It derives from nsISupports merely as a convienence since the entries are
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* reference counted...
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*/
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class EventQueueEntry : public nsISupports
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{
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public:
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EventQueueEntry();
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virtual ~EventQueueEntry();
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// nsISupports interface...
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NS_DECL_ISUPPORTS
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nsIEventQueue* GetEventQueue(void);
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void PushQueue(void);
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void PopQueue(void);
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private:
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EventQueueStack* mQueueStack;
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};
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////////////////////////////////////////////////////////////////////////////////
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class nsEventQueueServiceImpl : public nsIEventQueueService
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{
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public:
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nsEventQueueServiceImpl();
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virtual ~nsEventQueueServiceImpl();
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static NS_METHOD
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Create(nsISupports *aOuter, REFNSIID aIID, void **aResult);
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// nsISupports interface...
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NS_DECL_ISUPPORTS
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// nsIEventQueueService interface...
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NS_IMETHOD CreateThreadEventQueue(void);
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NS_IMETHOD DestroyThreadEventQueue(void);
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NS_IMETHOD GetThreadEventQueue(PRThread* aThread, nsIEventQueue** aResult);
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NS_IMETHOD CreateFromPLEventQueue(PLEventQueue* aPLEventQueue, nsIEventQueue** aResult);
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NS_IMETHOD PushThreadEventQueue(void);
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NS_IMETHOD PopThreadEventQueue(void);
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#ifdef XP_MAC
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NS_IMETHOD ProcessEvents();
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#endif // XP_MAC
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private:
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nsHashtable* mEventQTable;
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PRMonitor* mEventQMonitor;
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};
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////////////////////////////////////////////////////////////////////////////////
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#endif // nsEventQueueService_h__
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