mirror of
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311 lines
9.1 KiB
C++
311 lines
9.1 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 "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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#include "nsIFactory.h"
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#include "nsISupports.h"
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#include "msgCore.h"
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#include "nsMsgBaseCID.h"
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#include "pratom.h"
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#include "nsIComponentManager.h"
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#include "nsIServiceManager.h"
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#include "nsCRT.h"
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#include "nsCOMPtr.h"
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#include "nsNewsFolder.h"
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#include "nsMsgNewsCID.h"
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/* Include all of the interfaces our factory can generate components for */
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#include "nsNntpUrl.h"
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#include "nsNntpService.h"
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#include "nsNntpIncomingServer.h"
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#include "nsNewsMessage.h"
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static NS_DEFINE_CID(kComponentManagerCID, NS_COMPONENTMANAGER_CID);
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static NS_DEFINE_CID(kNntpUrlCID, NS_NNTPURL_CID);
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static NS_DEFINE_CID(kNntpServiceCID, NS_NNTPSERVICE_CID);
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static NS_DEFINE_CID(kNewsFolderResourceCID, NS_NEWSFOLDERRESOURCE_CID);
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static NS_DEFINE_CID(kNntpIncomingServerCID, NS_NNTPINCOMINGSERVER_CID);
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static NS_DEFINE_CID(kNewsMessageResourceCID, NS_NEWSMESSAGERESOURCE_CID);
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static PRInt32 g_InstanceCount = 0;
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static PRInt32 g_LockCount = 0;
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class nsMsgNewsFactory : public nsIFactory
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{
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public:
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// nsISupports methods
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NS_DECL_ISUPPORTS
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nsMsgNewsFactory(const nsCID &aClass,
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const char* aClassName,
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const char* aProgID);
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// nsIFactory methods
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NS_IMETHOD CreateInstance(nsISupports *aOuter, const nsIID &aIID, void **aResult);
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NS_IMETHOD LockFactory(PRBool aLock);
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protected:
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virtual ~nsMsgNewsFactory();
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nsCID mClassID;
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char* mClassName;
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char* mProgID;
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};
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nsMsgNewsFactory::nsMsgNewsFactory(const nsCID &aClass,
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const char* aClassName,
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const char* aProgID)
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: mClassID(aClass),
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mClassName(nsCRT::strdup(aClassName)),
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mProgID(nsCRT::strdup(aProgID))
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{
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NS_INIT_REFCNT();
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}
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nsMsgNewsFactory::~nsMsgNewsFactory()
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{
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NS_ASSERTION(mRefCnt == 0, "non-zero refcnt at destruction");
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PL_strfree(mClassName);
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PL_strfree(mProgID);
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}
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nsresult nsMsgNewsFactory::QueryInterface(const nsIID &aIID, 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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// Always NULL result, in case of failure
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*aResult = NULL;
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// we support two interfaces....nsISupports and nsFactory.....
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if (aIID.Equals(::nsISupports::GetIID()))
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*aResult = (void *)(nsISupports*)this;
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else if (aIID.Equals(nsIFactory::GetIID()))
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*aResult = (void *)(nsIFactory*)this;
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if (*aResult == NULL)
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return NS_NOINTERFACE;
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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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NS_IMPL_ADDREF(nsMsgNewsFactory)
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NS_IMPL_RELEASE(nsMsgNewsFactory)
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nsresult nsMsgNewsFactory::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 rv = NS_OK;
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if (aResult == nsnull)
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return NS_ERROR_NULL_POINTER;
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*aResult = nsnull;
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// ClassID check happens here
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// Whenever you add a new class that supports an interface, plug it in here!!!
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// do they want a news datasource ?
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if (mClassID.Equals(kNntpUrlCID))
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{
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nsNntpUrl *url = new nsNntpUrl(nsnull, nsnull);
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if (url)
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rv = url->QueryInterface(aIID, aResult);
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else
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rv = NS_ERROR_OUT_OF_MEMORY;
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if (NS_FAILED(rv) && url)
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delete url;
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}
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else if (mClassID.Equals(kNntpServiceCID))
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{
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nsNntpService *service = new nsNntpService();
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if (service)
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rv = service->QueryInterface(aIID, aResult);
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else
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rv = NS_ERROR_OUT_OF_MEMORY;
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if (NS_FAILED(rv) && service)
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delete service;
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}
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else if (mClassID.Equals(kNewsFolderResourceCID))
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{
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nsMsgNewsFolder *folder = new nsMsgNewsFolder();
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if (folder)
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rv = folder->QueryInterface(aIID, aResult);
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else
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rv = NS_ERROR_OUT_OF_MEMORY;
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if (NS_FAILED(rv) && folder)
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delete folder;
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}
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else if (mClassID.Equals(kNntpIncomingServerCID))
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{
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rv = NS_NewNntpIncomingServer(nsISupports::GetIID(), aResult);
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}
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else if (mClassID.Equals(kNewsMessageResourceCID))
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{
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nsNewsMessage *message = new nsNewsMessage();
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if (message)
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rv = message->QueryInterface(aIID, aResult);
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else
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rv = NS_ERROR_OUT_OF_MEMORY;
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if (NS_FAILED(rv) && message)
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delete message;
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}
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else
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return NS_NOINTERFACE;
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return rv;
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}
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nsresult nsMsgNewsFactory::LockFactory(PRBool aLock)
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{
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if (aLock)
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PR_AtomicIncrement(&g_LockCount);
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else
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PR_AtomicDecrement(&g_LockCount);
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return NS_OK;
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}
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////////////////////////////////////////////////////////////////////////////////
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// return the proper factory to the caller.
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extern "C" NS_EXPORT nsresult NSGetFactory(nsISupports* /* aServMgr */,
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const nsCID &aClass,
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const char *aClassName,
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const char *aProgID,
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nsIFactory **aFactory)
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{
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if (nsnull == aFactory)
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return NS_ERROR_NULL_POINTER;
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*aFactory = new nsMsgNewsFactory(aClass, aClassName, aProgID);
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if (aFactory)
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return (*aFactory)->QueryInterface(nsIFactory::GetIID(),(void**)aFactory);
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else
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return NS_ERROR_OUT_OF_MEMORY;
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}
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extern "C" NS_EXPORT PRBool NSCanUnload(nsISupports* /* aServMgr */)
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{
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return PRBool(g_InstanceCount == 0 && g_LockCount == 0);
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}
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////////////////////////////////////////////////////////////////////////////////
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extern "C" NS_EXPORT nsresult
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NSRegisterSelf(nsISupports* aServMgr, const char* path)
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{
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nsresult rv;
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nsCOMPtr<nsIServiceManager> servMgr(do_QueryInterface(aServMgr, &rv));
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if (NS_FAILED(rv)) return rv;
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nsIComponentManager* compMgr;
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rv = servMgr->GetService(kComponentManagerCID,
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nsIComponentManager::GetIID(),
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(nsISupports**)&compMgr);
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if (NS_FAILED(rv)) return rv;
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rv = compMgr->RegisterComponent(kNntpUrlCID, nsnull, nsnull, path, PR_TRUE, PR_TRUE);
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if (NS_FAILED(rv)) goto done;
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rv = compMgr->RegisterComponent(kNntpServiceCID, "NNTP Service",
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"component://netscape/messenger/nntpservice",
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path, PR_TRUE, PR_TRUE);
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if (NS_FAILED(rv)) goto done;
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rv = compMgr->RegisterComponent(kNntpServiceCID, "NNTP News Service",
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"component://netscape/messenger/messageservice;type=news",
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path, PR_TRUE, PR_TRUE);
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if (NS_FAILED(rv)) goto done;
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rv = compMgr->RegisterComponent(kNntpServiceCID, "NNTP News Message Service",
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"component://netscape/messenger/messageservice;type=news_message",
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path, PR_TRUE, PR_TRUE);
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if (NS_FAILED(rv)) goto done;
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rv = compMgr->RegisterComponent(kNewsFolderResourceCID,
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"News Folder Resource Factory",
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NS_RDF_RESOURCE_FACTORY_PROGID_PREFIX "news",
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path, PR_TRUE, PR_TRUE);
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if (NS_FAILED(rv)) goto done;
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rv = compMgr->RegisterComponent(kNewsMessageResourceCID,
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"News Resource Factory",
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NS_RDF_RESOURCE_FACTORY_PROGID_PREFIX "news_message",
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path, PR_TRUE, PR_TRUE);
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if (NS_FAILED(rv)) goto done;
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#ifdef NS_DEBUG
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printf("news registering from %s\n",path);
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#endif
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rv = compMgr->RegisterComponent(kNntpIncomingServerCID,
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"Nntp Incoming Server",
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"component://netscape/messenger/server&type=nntp",
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path, PR_TRUE, PR_TRUE);
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if (NS_FAILED(rv)) goto done;
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done:
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(void)servMgr->ReleaseService(kComponentManagerCID, compMgr);
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return rv;
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}
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extern "C" NS_EXPORT nsresult
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NSUnregisterSelf(nsISupports* aServMgr, const char* path)
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{
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nsresult rv;
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nsCOMPtr<nsIServiceManager> servMgr(do_QueryInterface(aServMgr, &rv));
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if (NS_FAILED(rv)) return rv;
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nsIComponentManager* compMgr;
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rv = servMgr->GetService(kComponentManagerCID, nsIComponentManager::GetIID(), (nsISupports**)&compMgr);
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if (NS_FAILED(rv)) return rv;
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rv = compMgr->UnregisterComponent(kNntpUrlCID, path);
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if (NS_FAILED(rv)) goto done;
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rv = compMgr->UnregisterComponent(kNntpServiceCID, path);
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if (NS_FAILED(rv)) goto done;
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rv = compMgr->UnregisterComponent(kNewsFolderResourceCID, path);
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if (NS_FAILED(rv)) goto done;
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rv = compMgr->UnregisterComponent(kNntpIncomingServerCID, path);
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if (NS_FAILED(rv)) goto done;
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rv = compMgr->UnregisterComponent(kNewsMessageResourceCID, path);
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if (NS_FAILED(rv)) goto done;
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done:
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(void)servMgr->ReleaseService(kComponentManagerCID, compMgr);
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return rv;
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}
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////////////////////////////////////////////////////////////////////////////////
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