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pjs/mailnews/news/build/nsMsgNewsFactory.cpp

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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 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#include "nsIFactory.h"
#include "nsISupports.h"
#include "msgCore.h"
#include "nsMsgBaseCID.h"
#include "pratom.h"
#include "nsIComponentManager.h"
#include "nsIServiceManager.h"
#include "nsCRT.h"
#include "nsCOMPtr.h"
#include "nsNewsFolder.h"
#include "nsMsgNewsCID.h"
/* Include all of the interfaces our factory can generate components for */
#include "nsNntpUrl.h"
#include "nsNntpService.h"
#include "nsNntpIncomingServer.h"
#include "nsNewsMessage.h"
#include "nsNNTPNewsgroup.h"
#include "nsNNTPNewsgroupPost.h"
#include "nsNNTPNewsgroupList.h"
#include "nsNNTPArticleList.h"
#include "nsNNTPHost.h"
static NS_DEFINE_CID(kComponentManagerCID, NS_COMPONENTMANAGER_CID);
static NS_DEFINE_CID(kNntpUrlCID, NS_NNTPURL_CID);
static NS_DEFINE_CID(kNntpServiceCID, NS_NNTPSERVICE_CID);
static NS_DEFINE_CID(kNewsFolderResourceCID, NS_NEWSFOLDERRESOURCE_CID);
static NS_DEFINE_CID(kNntpIncomingServerCID, NS_NNTPINCOMINGSERVER_CID);
static NS_DEFINE_CID(kNewsMessageResourceCID, NS_NEWSMESSAGERESOURCE_CID);
static NS_DEFINE_CID(kNNTPNewsgroupCID, NS_NNTPNEWSGROUP_CID);
static NS_DEFINE_CID(kNNTPNewsgroupPostCID, NS_NNTPNEWSGROUPPOST_CID);
static NS_DEFINE_CID(kNNTPNewsgroupListCID, NS_NNTPNEWSGROUPLIST_CID);
static NS_DEFINE_CID(kNNTPArticleListCID, NS_NNTPARTICLELIST_CID);
static NS_DEFINE_CID(kNNTPHostCID, NS_NNTPHOST_CID);
static PRInt32 g_InstanceCount = 0;
static PRInt32 g_LockCount = 0;
class nsMsgNewsFactory : public nsIFactory
{
public:
// nsISupports methods
NS_DECL_ISUPPORTS
nsMsgNewsFactory(const nsCID &aClass,
const char* aClassName,
const char* aProgID);
// nsIFactory methods
NS_IMETHOD CreateInstance(nsISupports *aOuter, const nsIID &aIID, void **aResult);
NS_IMETHOD LockFactory(PRBool aLock);
protected:
virtual ~nsMsgNewsFactory();
nsCID mClassID;
char* mClassName;
char* mProgID;
};
nsMsgNewsFactory::nsMsgNewsFactory(const nsCID &aClass,
const char* aClassName,
const char* aProgID)
: mClassID(aClass),
mClassName(nsCRT::strdup(aClassName)),
mProgID(nsCRT::strdup(aProgID))
{
NS_INIT_REFCNT();
}
nsMsgNewsFactory::~nsMsgNewsFactory()
{
NS_ASSERTION(mRefCnt == 0, "non-zero refcnt at destruction");
PL_strfree(mClassName);
PL_strfree(mProgID);
}
nsresult nsMsgNewsFactory::QueryInterface(const nsIID &aIID, void **aResult)
{
if (aResult == NULL)
return NS_ERROR_NULL_POINTER;
// Always NULL result, in case of failure
*aResult = NULL;
// we support two interfaces....nsISupports and nsFactory.....
if (aIID.Equals(nsCOMTypeInfo<nsISupports>::GetIID()))
*aResult = (void *)(nsISupports*)this;
else if (aIID.Equals(nsIFactory::GetIID()))
*aResult = (void *)(nsIFactory*)this;
if (*aResult == NULL)
return NS_NOINTERFACE;
AddRef(); // Increase reference count for caller
return NS_OK;
}
NS_IMPL_ADDREF(nsMsgNewsFactory)
NS_IMPL_RELEASE(nsMsgNewsFactory)
nsresult nsMsgNewsFactory::CreateInstance(nsISupports * /* aOuter */,
const nsIID &aIID,
void **aResult)
{
nsresult rv = NS_OK;
if (aResult == nsnull)
return NS_ERROR_NULL_POINTER;
*aResult = nsnull;
// ClassID check happens here
// Whenever you add a new class that supports an interface, plug it in here!!!
if (mClassID.Equals(kNntpUrlCID))
{
nsNntpUrl *url = new nsNntpUrl();
if (url)
rv = url->QueryInterface(aIID, aResult);
else
rv = NS_ERROR_OUT_OF_MEMORY;
if (NS_FAILED(rv) && url)
delete url;
}
else if (mClassID.Equals(kNntpServiceCID))
{
nsNntpService *service = new nsNntpService();
if (service)
rv = service->QueryInterface(aIID, aResult);
else
rv = NS_ERROR_OUT_OF_MEMORY;
if (NS_FAILED(rv) && service)
delete service;
}
else if (mClassID.Equals(kNNTPNewsgroupPostCID))
{
nsNNTPNewsgroupPost *newsgroupPost = new nsNNTPNewsgroupPost();
if (newsgroupPost)
rv = newsgroupPost->QueryInterface(aIID, aResult);
else
rv = NS_ERROR_OUT_OF_MEMORY;
if (NS_FAILED(rv) && newsgroupPost)
delete newsgroupPost;
}
else if (mClassID.Equals(kNNTPArticleListCID))
{
nsNNTPArticleList *articleList = new nsNNTPArticleList();
if (articleList)
rv = articleList->QueryInterface(aIID, aResult);
else
rv = NS_ERROR_OUT_OF_MEMORY;
if (NS_FAILED(rv) && articleList)
delete articleList;
}
else if (mClassID.Equals(kNNTPNewsgroupListCID))
{
nsNNTPNewsgroupList *newsgroupList = new nsNNTPNewsgroupList();
if (newsgroupList)
rv = newsgroupList->QueryInterface(aIID, aResult);
else
rv = NS_ERROR_OUT_OF_MEMORY;
if (NS_FAILED(rv) && newsgroupList)
delete newsgroupList;
}
else if (mClassID.Equals(kNNTPNewsgroupCID))
{
nsNNTPNewsgroup *newsgroup = new nsNNTPNewsgroup();
if (newsgroup)
rv = newsgroup->QueryInterface(aIID, aResult);
else
rv = NS_ERROR_OUT_OF_MEMORY;
if (NS_FAILED(rv) && newsgroup)
delete newsgroup;
}
else if (mClassID.Equals(kNewsFolderResourceCID))
{
nsMsgNewsFolder *folder = new nsMsgNewsFolder();
if (folder)
rv = folder->QueryInterface(aIID, aResult);
else
rv = NS_ERROR_OUT_OF_MEMORY;
if (NS_FAILED(rv) && folder)
delete folder;
}
else if (mClassID.Equals(kNNTPHostCID))
{
nsNNTPHost *host = new nsNNTPHost();
if (host)
rv = host->QueryInterface(aIID, aResult);
else
rv = NS_ERROR_OUT_OF_MEMORY;
if (NS_FAILED(rv) && host)
delete host;
}
else if (mClassID.Equals(kNntpIncomingServerCID))
{
nsNntpIncomingServer *server = new nsNntpIncomingServer();
if (server)
rv = server->QueryInterface(aIID, aResult);
else
rv = NS_ERROR_OUT_OF_MEMORY;
if (NS_FAILED(rv) && server)
delete server;
}
else if (mClassID.Equals(kNewsMessageResourceCID))
{
nsNewsMessage *message = new nsNewsMessage();
if (message)
rv = message->QueryInterface(aIID, aResult);
else
rv = NS_ERROR_OUT_OF_MEMORY;
if (NS_FAILED(rv) && message)
delete message;
}
else
return NS_NOINTERFACE;
return rv;
}
nsresult nsMsgNewsFactory::LockFactory(PRBool aLock)
{
if (aLock)
PR_AtomicIncrement(&g_LockCount);
else
PR_AtomicDecrement(&g_LockCount);
return NS_OK;
}
////////////////////////////////////////////////////////////////////////////////
// return the proper factory to the caller.
extern "C" NS_EXPORT nsresult NSGetFactory(nsISupports* /* aServMgr */,
const nsCID &aClass,
const char *aClassName,
const char *aProgID,
nsIFactory **aFactory)
{
if (nsnull == aFactory)
return NS_ERROR_NULL_POINTER;
*aFactory = new nsMsgNewsFactory(aClass, aClassName, aProgID);
if (aFactory)
return (*aFactory)->QueryInterface(nsIFactory::GetIID(),(void**)aFactory);
else
return NS_ERROR_OUT_OF_MEMORY;
}
extern "C" NS_EXPORT PRBool NSCanUnload(nsISupports* /* aServMgr */)
{
return PRBool(g_InstanceCount == 0 && g_LockCount == 0);
}
////////////////////////////////////////////////////////////////////////////////
extern "C" NS_EXPORT nsresult
NSRegisterSelf(nsISupports* aServMgr, const char* path)
{
nsresult rv = NS_OK;
nsCOMPtr<nsIServiceManager> servMgr(do_QueryInterface(aServMgr, &rv));
if (NS_FAILED(rv)) return rv;
NS_WITH_SERVICE1(nsIComponentManager, compMgr, aServMgr, kComponentManagerCID, &rv);
if (NS_FAILED(rv)) return rv;
rv = compMgr->RegisterComponent(kNntpUrlCID,
"NNTP Url",
"component://netscape/messenger/nntpurl",
path, PR_TRUE, PR_TRUE);
if (NS_FAILED(rv)) return rv;
rv = compMgr->RegisterComponent(kNntpServiceCID, "NNTP Service",
"component://netscape/messenger/nntpservice",
path, PR_TRUE, PR_TRUE);
if (NS_FAILED(rv)) return rv;
rv = compMgr->RegisterComponent(kNntpServiceCID, "NNTP News Service",
"component://netscape/messenger/messageservice;type=news",
path, PR_TRUE, PR_TRUE);
if (NS_FAILED(rv)) return rv;
rv = compMgr->RegisterComponent(kNntpServiceCID, "NNTP News Message Service",
"component://netscape/messenger/messageservice;type=news_message",
path, PR_TRUE, PR_TRUE);
if (NS_FAILED(rv)) return rv;
rv = compMgr->RegisterComponent(kNewsFolderResourceCID,
"News Folder Resource Factory",
NS_RDF_RESOURCE_FACTORY_PROGID_PREFIX "news",
path, PR_TRUE, PR_TRUE);
if (NS_FAILED(rv)) return rv;
rv = compMgr->RegisterComponent(kNewsMessageResourceCID,
"News Resource Factory",
NS_RDF_RESOURCE_FACTORY_PROGID_PREFIX "news_message",
path, PR_TRUE, PR_TRUE);
if (NS_FAILED(rv)) return rv;
rv = compMgr->RegisterComponent(kNntpIncomingServerCID,
"Nntp Incoming Server",
"component://netscape/messenger/server&type=nntp",
path, PR_TRUE, PR_TRUE);
if (NS_FAILED(rv)) return rv;
rv = compMgr->RegisterComponent(kNNTPNewsgroupCID,
"NNTP Newsgroup",
"component://netscape/messeneger/nntpnewsgroup",
path, PR_TRUE, PR_TRUE);
if (NS_FAILED(rv)) return rv;
rv = compMgr->RegisterComponent(kNNTPNewsgroupPostCID,
"NNTP Newsgroup Post",
"component://netscape/messeneger/nntpnewsgrouppost",
path, PR_TRUE, PR_TRUE);
if (NS_FAILED(rv)) return rv;
rv = compMgr->RegisterComponent(kNNTPNewsgroupListCID,
"NNTP Newsgroup List",
"component://netscape/messeneger/nntpnewsgrouplist",
path, PR_TRUE, PR_TRUE);
if (NS_FAILED(rv)) return rv;
rv = compMgr->RegisterComponent(kNNTPArticleListCID,
"NNTP Article List",
"component://netscape/messeneger/nntparticlelist",
path, PR_TRUE, PR_TRUE);
if (NS_FAILED(rv)) return rv;
rv = compMgr->RegisterComponent(kNNTPHostCID,
"NNTP Host",
"component://netscape/messeneger/nntphost",
path, PR_TRUE, PR_TRUE);
if (NS_FAILED(rv)) return rv;
return NS_OK;
}
extern "C" NS_EXPORT nsresult
NSUnregisterSelf(nsISupports* aServMgr, const char* path)
{
nsresult rv = NS_OK;
nsCOMPtr<nsIServiceManager> servMgr(do_QueryInterface(aServMgr, &rv));
if (NS_FAILED(rv)) return rv;
NS_WITH_SERVICE(nsIComponentManager,compMgr,kComponentManagerCID,&rv);
if (NS_FAILED(rv)) return rv;
rv = compMgr->UnregisterComponent(kNntpUrlCID, path);
if (NS_FAILED(rv)) return rv;
rv = compMgr->UnregisterComponent(kNntpServiceCID, path);
if (NS_FAILED(rv)) return rv;
rv = compMgr->UnregisterComponent(kNewsFolderResourceCID, path);
if (NS_FAILED(rv)) return rv;
rv = compMgr->UnregisterComponent(kNntpIncomingServerCID, path);
if (NS_FAILED(rv)) return rv;
rv = compMgr->UnregisterComponent(kNewsMessageResourceCID, path);
if (NS_FAILED(rv)) return rv;
rv = compMgr->UnregisterComponent(kNNTPNewsgroupCID, path);
if (NS_FAILED(rv)) return rv;
rv = compMgr->UnregisterComponent(kNNTPNewsgroupPostCID, path);
if (NS_FAILED(rv)) return rv;
rv = compMgr->UnregisterComponent(kNNTPNewsgroupListCID, path);
if (NS_FAILED(rv)) return rv;
rv = compMgr->UnregisterComponent(kNNTPArticleListCID, path);
if (NS_FAILED(rv)) return rv;
rv = compMgr->UnregisterComponent(kNNTPHostCID, path);
if (NS_FAILED(rv)) return rv;
return NS_OK;
}
////////////////////////////////////////////////////////////////////////////////
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