1998-09-17 00:55:35 +00:00
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/* -*- 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 "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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1998-11-30 22:15:00 +00:00
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1998-09-17 00:55:35 +00:00
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#include "nscore.h"
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#include "nsIFactory.h"
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#include "nsISupports.h"
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#include "nsINetService.h"
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#include "nsNetService.h"
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1999-01-25 08:05:00 +00:00
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#include "nsIServiceManager.h"
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1999-01-14 23:21:06 +00:00
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#include "nsRepository.h"
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1998-09-17 00:55:35 +00:00
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/* This implementation of the network service factory is presently
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* only taking advantage of the service retrieval benefit that the
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* nsINetService interface provides. The module initialization and
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* unloading is still bound to main program execution and closing.
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* Once we break this dependence, the
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* nsNetFactory will also appropriately handle loading/initializing/
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* unloading of the library.
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*/
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static NS_DEFINE_IID(kNetServiceCID, NS_NETSERVICE_CID);
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static NS_DEFINE_IID(kISupportsIID, NS_ISUPPORTS_IID);
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static NS_DEFINE_IID(kIFactoryIID, NS_IFACTORY_IID);
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extern nsNetlibService *gNetlibService; // See nsNetService.cpp
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class nsNetFactory : public nsIFactory
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{
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public:
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// nsISupports methods
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NS_IMETHOD QueryInterface(const nsIID &aIID,
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void **aResult);
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NS_IMETHOD_(nsrefcnt) AddRef(void);
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NS_IMETHOD_(nsrefcnt) Release(void);
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// nsIFactory methods
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NS_IMETHOD CreateInstance(nsISupports *aOuter,
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const nsIID &aIID,
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void **aResult);
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NS_IMETHOD LockFactory(PRBool aLock);
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nsNetFactory(const nsCID &aClass);
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protected:
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virtual ~nsNetFactory();
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private:
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nsrefcnt mRefCnt;
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nsCID mClassID;
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};
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nsNetFactory::nsNetFactory(const nsCID &aClass)
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{
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mRefCnt = 0;
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mClassID = aClass;
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}
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nsNetFactory::~nsNetFactory()
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{
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NS_ASSERTION(mRefCnt == 0, "non-zero refcnt at destruction");
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}
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nsresult nsNetFactory::QueryInterface(const nsIID &aIID,
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void **aResult)
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{
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if (aResult == NULL) {
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return NS_ERROR_NULL_POINTER;
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}
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// Always NULL result, in case of failure
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*aResult = NULL;
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if (aIID.Equals(kISupportsIID)) {
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*aResult = (void *)(nsISupports*)this;
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} else if (aIID.Equals(kIFactoryIID)) {
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*aResult = (void *)(nsIFactory*)this;
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}
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if (*aResult == NULL) {
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return NS_NOINTERFACE;
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}
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AddRef(); // Increase reference count for caller
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return NS_OK;
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}
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nsrefcnt nsNetFactory::AddRef()
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{
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return ++mRefCnt;
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}
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nsrefcnt nsNetFactory::Release()
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{
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if (--mRefCnt == 0) {
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delete this;
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return 0; // Don't access mRefCnt after deleting!
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}
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return mRefCnt;
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}
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nsresult nsNetFactory::CreateInstance(nsISupports *aOuter,
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const nsIID &aIID,
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void **aResult)
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{
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nsresult res;
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if (aResult == NULL) {
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return NS_ERROR_NULL_POINTER;
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}
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*aResult = NULL;
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if (mClassID.Equals(kNetServiceCID)) {
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// No need create a new one if we've already got one.
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if (!gNetlibService) {
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1998-10-07 23:19:39 +00:00
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res = NS_InitINetService();
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1998-09-17 00:55:35 +00:00
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if (res != NS_OK)
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return NS_ERROR_FAILURE;
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}
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// Hook the caller up.
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res = NS_NewINetService((nsINetService**)aResult, aOuter);
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}
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return res;
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}
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nsresult nsNetFactory::LockFactory(PRBool aLock)
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{
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// Not implemented in simplest case.
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return NS_OK;
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}
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// return the proper factory to the caller
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1998-11-30 22:15:00 +00:00
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#if defined(XP_MAC) && defined(MAC_STATIC)
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1999-01-25 08:05:00 +00:00
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extern "C" NS_NET nsresult NSGetFactory_NETLIB_DLL(const nsCID &aClass, nsISupports* servMgr, nsIFactory **aFactory)
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1998-09-17 00:55:35 +00:00
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#else
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1999-01-25 08:05:00 +00:00
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extern "C" NS_NET nsresult NSGetFactory(const nsCID &aClass, nsISupports* servMgr, nsIFactory **aFactory)
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1998-09-17 00:55:35 +00:00
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#endif
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{
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if (nsnull == aFactory) {
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return NS_ERROR_NULL_POINTER;
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}
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*aFactory = new nsNetFactory(aClass);
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if (nsnull == aFactory) {
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return NS_ERROR_OUT_OF_MEMORY;
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}
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return (*aFactory)->QueryInterface(kIFactoryIID, (void**)aFactory);
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}
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