nsComponentManagerUtils.h
上传用户:goldcmy89
上传日期:2017-12-03
资源大小:2246k
文件大小:10k
源码类别:
PlugIns编程
开发平台:
Visual C++
- /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
- /* ***** BEGIN LICENSE BLOCK *****
- * Version: MPL 1.1/GPL 2.0/LGPL 2.1
- *
- * The contents of this file are subject to the Mozilla Public License Version
- * 1.1 (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- * http://www.mozilla.org/MPL/
- *
- * Software distributed under the License is distributed on an "AS IS" basis,
- * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
- * for the specific language governing rights and limitations under the
- * License.
- *
- * The Original Code is mozilla.org Code.
- *
- * The Initial Developer of the Original Code is
- * Netscape Communications Corporation.
- * Portions created by the Initial Developer are Copyright (C) 1998
- * the Initial Developer. All Rights Reserved.
- *
- * Contributor(s):
- *
- * Alternatively, the contents of this file may be used under the terms of
- * either of the GNU General Public License Version 2 or later (the "GPL"),
- * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
- * in which case the provisions of the GPL or the LGPL are applicable instead
- * of those above. If you wish to allow use of your version of this file only
- * under the terms of either the GPL or the LGPL, and not to allow others to
- * use your version of this file under the terms of the MPL, indicate your
- * decision by deleting the provisions above and replace them with the notice
- * and other provisions required by the GPL or the LGPL. If you do not delete
- * the provisions above, a recipient may use your version of this file under
- * the terms of any one of the MPL, the GPL or the LGPL.
- *
- * ***** END LICENSE BLOCK ***** */
- #ifndef nsComponentManagerUtils_h__
- #define nsComponentManagerUtils_h__
- #ifndef nscore_h__
- #include "nscore.h"
- #endif
- #ifndef nsCOMPtr_h__
- #include "nsCOMPtr.h"
- #endif
- #include "nsIFactory.h"
- NS_COM_GLUE nsresult
- CallCreateInstance
- (const nsCID &aClass, nsISupports *aDelegate, const nsIID &aIID,
- void **aResult);
- NS_COM_GLUE nsresult
- CallCreateInstance
- (const char *aContractID, nsISupports *aDelegate, const nsIID &aIID,
- void **aResult);
- NS_COM_GLUE nsresult
- CallGetClassObject
- (const nsCID &aClass, const nsIID &aIID, void **aResult);
- NS_COM_GLUE nsresult
- CallGetClassObject
- (const char *aContractID, const nsIID &aIID, void **aResult);
- class NS_COM_GLUE nsCreateInstanceByCID : public nsCOMPtr_helper
- {
- public:
- nsCreateInstanceByCID( const nsCID& aCID, nsISupports* aOuter, nsresult* aErrorPtr )
- : mCID(aCID),
- mOuter(aOuter),
- mErrorPtr(aErrorPtr)
- {
- // nothing else to do here
- }
- virtual nsresult NS_FASTCALL operator()( const nsIID&, void** ) const;
- private:
- const nsCID& mCID;
- nsISupports* mOuter;
- nsresult* mErrorPtr;
- };
- class NS_COM_GLUE nsCreateInstanceByContractID : public nsCOMPtr_helper
- {
- public:
- nsCreateInstanceByContractID( const char* aContractID, nsISupports* aOuter, nsresult* aErrorPtr )
- : mContractID(aContractID),
- mOuter(aOuter),
- mErrorPtr(aErrorPtr)
- {
- // nothing else to do here
- }
- virtual nsresult NS_FASTCALL operator()( const nsIID&, void** ) const;
- private:
- const char* mContractID;
- nsISupports* mOuter;
- nsresult* mErrorPtr;
- };
- class NS_COM_GLUE nsCreateInstanceFromFactory : public nsCOMPtr_helper
- {
- public:
- nsCreateInstanceFromFactory( nsIFactory* aFactory, nsISupports* aOuter, nsresult* aErrorPtr )
- : mFactory(aFactory),
- mOuter(aOuter),
- mErrorPtr(aErrorPtr)
- {
- // nothing else to do here
- }
- virtual nsresult NS_FASTCALL operator()( const nsIID&, void** ) const;
- private:
- nsIFactory* mFactory;
- nsISupports* mOuter;
- nsresult* mErrorPtr;
- };
- inline
- const nsCreateInstanceByCID
- do_CreateInstance( const nsCID& aCID, nsresult* error = 0 )
- {
- return nsCreateInstanceByCID(aCID, 0, error);
- }
- inline
- const nsCreateInstanceByCID
- do_CreateInstance( const nsCID& aCID, nsISupports* aOuter, nsresult* error = 0 )
- {
- return nsCreateInstanceByCID(aCID, aOuter, error);
- }
- inline
- const nsCreateInstanceByContractID
- do_CreateInstance( const char* aContractID, nsresult* error = 0 )
- {
- return nsCreateInstanceByContractID(aContractID, 0, error);
- }
- inline
- const nsCreateInstanceByContractID
- do_CreateInstance( const char* aContractID, nsISupports* aOuter, nsresult* error = 0 )
- {
- return nsCreateInstanceByContractID(aContractID, aOuter, error);
- }
- inline
- const nsCreateInstanceFromFactory
- do_CreateInstance( nsIFactory* aFactory, nsresult* error = 0 )
- {
- return nsCreateInstanceFromFactory(aFactory, 0, error);
- }
- inline
- const nsCreateInstanceFromFactory
- do_CreateInstance( nsIFactory* aFactory, nsISupports* aOuter, nsresult* error = 0 )
- {
- return nsCreateInstanceFromFactory(aFactory, aOuter, error);
- }
- class NS_COM_GLUE nsGetClassObjectByCID : public nsCOMPtr_helper
- {
- public:
- nsGetClassObjectByCID( const nsCID& aCID, nsresult* aErrorPtr )
- : mCID(aCID),
- mErrorPtr(aErrorPtr)
- {
- // nothing else to do here
- }
- virtual nsresult NS_FASTCALL operator()( const nsIID&, void** ) const;
- private:
- const nsCID& mCID;
- nsresult* mErrorPtr;
- };
- class NS_COM_GLUE nsGetClassObjectByContractID : public nsCOMPtr_helper
- {
- public:
- nsGetClassObjectByContractID( const char* aContractID, nsresult* aErrorPtr )
- : mContractID(aContractID),
- mErrorPtr(aErrorPtr)
- {
- // nothing else to do here
- }
- virtual nsresult NS_FASTCALL operator()( const nsIID&, void** ) const;
- private:
- const char* mContractID;
- nsresult* mErrorPtr;
- };
- /**
- * do_GetClassObject can be used to improve performance of callers
- * that call |CreateInstance| many times. They can cache the factory
- * and call do_CreateInstance or CallCreateInstance with the cached
- * factory rather than having the component manager retrieve it every
- * time.
- */
- inline const nsGetClassObjectByCID
- do_GetClassObject( const nsCID& aCID, nsresult* error = 0 )
- {
- return nsGetClassObjectByCID(aCID, error);
- }
- inline const nsGetClassObjectByContractID
- do_GetClassObject( const char* aContractID, nsresult* error = 0 )
- {
- return nsGetClassObjectByContractID(aContractID, error);
- }
- // type-safe shortcuts for calling |CreateInstance|
- template <class DestinationType>
- inline
- nsresult
- CallCreateInstance( const nsCID &aClass,
- nsISupports *aDelegate,
- DestinationType** aDestination )
- {
- NS_PRECONDITION(aDestination, "null parameter");
- return CallCreateInstance(aClass, aDelegate,
- NS_GET_IID(DestinationType),
- NS_REINTERPRET_CAST(void**, aDestination));
- }
- template <class DestinationType>
- inline
- nsresult
- CallCreateInstance( const nsCID &aClass,
- DestinationType** aDestination )
- {
- NS_PRECONDITION(aDestination, "null parameter");
- return CallCreateInstance(aClass, nsnull,
- NS_GET_IID(DestinationType),
- NS_REINTERPRET_CAST(void**, aDestination));
- }
- template <class DestinationType>
- inline
- nsresult
- CallCreateInstance( const char *aContractID,
- nsISupports *aDelegate,
- DestinationType** aDestination )
- {
- NS_PRECONDITION(aContractID, "null parameter");
- NS_PRECONDITION(aDestination, "null parameter");
- return CallCreateInstance(aContractID,
- aDelegate,
- NS_GET_IID(DestinationType),
- NS_REINTERPRET_CAST(void**, aDestination));
- }
- template <class DestinationType>
- inline
- nsresult
- CallCreateInstance( const char *aContractID,
- DestinationType** aDestination )
- {
- NS_PRECONDITION(aContractID, "null parameter");
- NS_PRECONDITION(aDestination, "null parameter");
- return CallCreateInstance(aContractID, nsnull,
- NS_GET_IID(DestinationType),
- NS_REINTERPRET_CAST(void**, aDestination));
- }
- template <class DestinationType>
- inline
- nsresult
- CallCreateInstance( nsIFactory *aFactory,
- nsISupports *aDelegate,
- DestinationType** aDestination )
- {
- NS_PRECONDITION(aFactory, "null parameter");
- NS_PRECONDITION(aDestination, "null parameter");
- return aFactory->CreateInstance(aDelegate,
- NS_GET_IID(DestinationType),
- NS_REINTERPRET_CAST(void**, aDestination));
- }
- template <class DestinationType>
- inline
- nsresult
- CallCreateInstance( nsIFactory *aFactory,
- DestinationType** aDestination )
- {
- NS_PRECONDITION(aFactory, "null parameter");
- NS_PRECONDITION(aDestination, "null parameter");
- return aFactory->CreateInstance(nsnull,
- NS_GET_IID(DestinationType),
- NS_REINTERPRET_CAST(void**, aDestination));
- }
- template <class DestinationType>
- inline
- nsresult
- CallGetClassObject( const nsCID &aClass,
- DestinationType** aDestination )
- {
- NS_PRECONDITION(aDestination, "null parameter");
- return CallGetClassObject(aClass,
- NS_GET_IID(DestinationType), NS_REINTERPRET_CAST(void**, aDestination));
- }
- template <class DestinationType>
- inline
- nsresult
- CallGetClassObject( const char* aContractID,
- DestinationType** aDestination )
- {
- NS_PRECONDITION(aDestination, "null parameter");
- return CallGetClassObject(aContractID,
- NS_GET_IID(DestinationType), NS_REINTERPRET_CAST(void**, aDestination));
- }
- #endif /* nsComponentManagerUtils_h__ */