mirror of
https://github.com/mozilla/gecko-dev.git
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278 lines
8.5 KiB
C++
278 lines
8.5 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 "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 "nsIModule.h"
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#include "nsIGenericFactory.h"
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#include "nsMsgMimeCID.h"
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#include "nsCOMPtr.h"
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// include files for components this factory creates...
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#include "nsStreamConverter.h"
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#include "nsMimeObjectClassAccess.h"
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#include "nsMimeConverter.h"
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#include "nsMsgHeaderParser.h"
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#include "nsMimeURLUtils.h"
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#include "nsMimeHeaders.h"
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static NS_DEFINE_CID(kCMimeMimeObjectClassAccessCID, NS_MIME_OBJECT_CLASS_ACCESS_CID);
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static NS_DEFINE_CID(kCMimeConverterCID, NS_MIME_CONVERTER_CID);
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static NS_DEFINE_CID(kCStreamConverterCID, NS_MAILNEWS_MIME_STREAM_CONVERTER_CID);
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static NS_DEFINE_CID(kCMsgHeaderParserCID, NS_MSGHEADERPARSER_CID);
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static NS_DEFINE_CID(kCIMimeURLUtilsCID, NS_IMIME_URLUTILS_CID);
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static NS_DEFINE_CID(kCIMimeHeadersCID, NS_IMIMEHEADERS_CID);
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// private factory declarations for each component we know how to produce
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NS_GENERIC_FACTORY_CONSTRUCTOR(nsMimeObjectClassAccess)
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NS_GENERIC_FACTORY_CONSTRUCTOR(nsMimeConverter)
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NS_GENERIC_FACTORY_CONSTRUCTOR(nsStreamConverter)
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NS_GENERIC_FACTORY_CONSTRUCTOR(nsMsgHeaderParser)
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NS_GENERIC_FACTORY_CONSTRUCTOR(nsMimeURLUtils)
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NS_GENERIC_FACTORY_CONSTRUCTOR(nsMimeHeaders)
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// Module implementation for the sample library
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class nsMimeModule : public nsIModule
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{
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public:
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nsMimeModule();
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virtual ~nsMimeModule();
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NS_DECL_ISUPPORTS
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NS_DECL_NSIMODULE
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protected:
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nsresult Initialize();
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void Shutdown();
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PRBool mInitialized;
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nsCOMPtr<nsIGenericFactory> mObjectClassAccessFactory;
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nsCOMPtr<nsIGenericFactory> mMimeConverterFactory;
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nsCOMPtr<nsIGenericFactory> mStreamConverterFactory;
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nsCOMPtr<nsIGenericFactory> mMsgHeaderParserFactory;
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nsCOMPtr<nsIGenericFactory> mMimeURLUtilsFactory;
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nsCOMPtr<nsIGenericFactory> mMimeHeadersFactory;
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};
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nsMimeModule::nsMimeModule()
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: mInitialized(PR_FALSE)
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{
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NS_INIT_ISUPPORTS();
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}
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nsMimeModule::~nsMimeModule()
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{
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Shutdown();
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}
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NS_IMPL_ISUPPORTS(nsMimeModule, NS_GET_IID(nsIModule))
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// Perform our one-time intialization for this module
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nsresult nsMimeModule::Initialize()
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{
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if (mInitialized)
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return NS_OK;
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mInitialized = PR_TRUE;
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return NS_OK;
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}
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// Shutdown this module, releasing all of the module resources
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void nsMimeModule::Shutdown()
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{
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// Release the factory object
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mObjectClassAccessFactory = null_nsCOMPtr();
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mMimeConverterFactory = null_nsCOMPtr();
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mStreamConverterFactory = null_nsCOMPtr();
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mMsgHeaderParserFactory = null_nsCOMPtr();
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mMimeURLUtilsFactory = null_nsCOMPtr();
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mMimeHeadersFactory = null_nsCOMPtr();
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}
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// Create a factory object for creating instances of aClass.
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NS_IMETHODIMP nsMimeModule::GetClassObject(nsIComponentManager *aCompMgr,
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const nsCID& aClass,
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const nsIID& aIID,
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void** r_classObj)
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{
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nsresult rv;
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// Defensive programming: Initialize *r_classObj in case of error below
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if (!r_classObj)
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return NS_ERROR_INVALID_POINTER;
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*r_classObj = NULL;
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// Do one-time-only initialization if necessary
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if (!mInitialized)
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{
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rv = Initialize();
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if (NS_FAILED(rv)) // Initialization failed! yikes!
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return rv;
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}
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// Choose the appropriate factory, based on the desired instance
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// class type (aClass).
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nsCOMPtr<nsIGenericFactory> fact;
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if (aClass.Equals(kCMimeMimeObjectClassAccessCID))
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{
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if (!mObjectClassAccessFactory)
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rv = NS_NewGenericFactory(getter_AddRefs(mObjectClassAccessFactory), &nsMimeObjectClassAccessConstructor);
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fact = mObjectClassAccessFactory;
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}
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else if (aClass.Equals(kCMimeConverterCID))
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{
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if (!mMimeConverterFactory)
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rv = NS_NewGenericFactory(getter_AddRefs(mMimeConverterFactory), &nsMimeConverterConstructor);
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fact = mMimeConverterFactory;
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}
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else if (aClass.Equals(kCStreamConverterCID))
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{
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if (!mStreamConverterFactory)
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rv = NS_NewGenericFactory(getter_AddRefs(mStreamConverterFactory), &nsStreamConverterConstructor);
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fact = mStreamConverterFactory;
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}
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else if (aClass.Equals(kCMsgHeaderParserCID))
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{
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if (!mMsgHeaderParserFactory)
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rv = NS_NewGenericFactory(getter_AddRefs(mMsgHeaderParserFactory), &nsMsgHeaderParserConstructor);
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fact = mMsgHeaderParserFactory;
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}
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else if (aClass.Equals(kCIMimeURLUtilsCID))
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{
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if (!mMimeURLUtilsFactory)
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rv = NS_NewGenericFactory(getter_AddRefs(mMimeURLUtilsFactory), &nsMimeURLUtilsConstructor);
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fact = mMimeURLUtilsFactory;
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}
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else if (aClass.Equals(kCIMimeHeadersCID))
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{
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if (!mMimeHeadersFactory)
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rv = NS_NewGenericFactory(getter_AddRefs(mMimeHeadersFactory), &nsMimeHeadersConstructor);
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fact = mMimeHeadersFactory;
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}
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if (fact)
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rv = fact->QueryInterface(aIID, r_classObj);
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return rv;
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}
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struct Components {
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const char* mDescription;
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const nsID* mCID;
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const char* mProgID;
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};
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// The list of components we register
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static Components gComponents[] = {
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{ "MimeObjectClassAccess", &kCMimeMimeObjectClassAccessCID,
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nsnull },
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{ "Mime Converter", &kCMimeConverterCID,
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nsnull},
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{ "Msg Header Parser", &kCMsgHeaderParserCID,
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nsnull },
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{ "Mime URL Utils", &kCIMimeURLUtilsCID,
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nsnull },
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{ "Mailnews Mime Stream Converter", &kCStreamConverterCID,
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NS_MAILNEWS_MIME_STREAM_CONVERTER_PROGID },
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{ "Mailnews Mime Stream Converter", &kCStreamConverterCID,
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NS_MAILNEWS_MIME_STREAM_CONVERTER_PROGID1 },
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{ "Mime Headers", &kCIMimeHeadersCID,
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nsnull }
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};
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#define NUM_COMPONENTS (sizeof(gComponents) / sizeof(gComponents[0]))
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NS_IMETHODIMP nsMimeModule::RegisterSelf(nsIComponentManager *aCompMgr,
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nsIFileSpec* aPath,
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const char* registryLocation,
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const char* componentType)
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{
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nsresult rv = NS_OK;
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Components* cp = gComponents;
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Components* end = cp + NUM_COMPONENTS;
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while (cp < end)
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{
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rv = aCompMgr->RegisterComponentSpec(*cp->mCID, cp->mDescription,
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cp->mProgID, aPath, PR_TRUE,
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PR_TRUE);
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if (NS_FAILED(rv))
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break;
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cp++;
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}
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return rv;
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}
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NS_IMETHODIMP nsMimeModule::UnregisterSelf(nsIComponentManager* aCompMgr,
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nsIFileSpec* aPath,
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const char* registryLocation)
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{
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Components* cp = gComponents;
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Components* end = cp + NUM_COMPONENTS;
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while (cp < end)
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{
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aCompMgr->UnregisterComponentSpec(*cp->mCID, aPath);
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cp++;
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}
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return NS_OK;
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}
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NS_IMETHODIMP nsMimeModule::CanUnload(nsIComponentManager *aCompMgr, PRBool *okToUnload)
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{
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if (!okToUnload)
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return NS_ERROR_INVALID_POINTER;
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*okToUnload = PR_FALSE;
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return NS_ERROR_FAILURE;
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}
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//----------------------------------------------------------------------
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static nsMimeModule *gModule = NULL;
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extern "C" NS_EXPORT nsresult NSGetModule(nsIComponentManager *servMgr,
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nsIFileSpec* location,
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nsIModule** return_cobj)
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{
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nsresult rv = NS_OK;
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NS_ASSERTION(return_cobj, "Null argument");
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NS_ASSERTION(gModule == NULL, "nsMimeModule: Module already created.");
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// Create an initialize the imap module instance
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nsMimeModule *module = new nsMimeModule();
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if (!module)
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return NS_ERROR_OUT_OF_MEMORY;
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// Increase refcnt and store away nsIModule interface to m in return_cobj
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rv = module->QueryInterface(nsIModule::GetIID(), (void**)return_cobj);
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if (NS_FAILED(rv))
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{
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delete module;
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module = nsnull;
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}
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gModule = module; // WARNING: Weak Reference
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return rv;
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}
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