nsServiceManagerUtils.h
上传用户:goldcmy89
上传日期:2017-12-03
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文件大小:4k
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PlugIns编程
开发平台:
Visual C++
- /* -*- Mode: C++; tab-width: 2; 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 XPCOM.
- *
- * 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 nsServiceManagerUtils_h__
- #define nsServiceManagerUtils_h__
- #include "nsIServiceManager.h"
- #include "nsCOMPtr.h"
- inline
- const nsGetServiceByCID
- do_GetService(const nsCID& aCID)
- {
- return nsGetServiceByCID(aCID);
- }
- inline
- const nsGetServiceByCIDWithError
- do_GetService(const nsCID& aCID, nsresult* error)
- {
- return nsGetServiceByCIDWithError(aCID, error);
- }
- inline
- const nsGetServiceByContractID
- do_GetService(const char* aContractID)
- {
- return nsGetServiceByContractID(aContractID);
- }
- inline
- const nsGetServiceByContractIDWithError
- do_GetService( const char* aContractID, nsresult* error)
- {
- return nsGetServiceByContractIDWithError(aContractID, error);
- }
- class nsGetServiceFromCategory : public nsCOMPtr_helper
- {
- public:
- nsGetServiceFromCategory(const char* aCategory, const char* aEntry,
- nsresult* aErrorPtr)
- : mCategory(aCategory),
- mEntry(aEntry),
- mErrorPtr(aErrorPtr)
- {
- // nothing else to do
- }
- virtual nsresult NS_FASTCALL operator()( const nsIID&, void** ) const;
- protected:
- const char* mCategory;
- const char* mEntry;
- nsresult* mErrorPtr;
- };
- inline
- const nsGetServiceFromCategory
- do_GetServiceFromCategory( const char* category, const char* entry,
- nsresult* error = 0)
- {
- return nsGetServiceFromCategory(category, entry, error);
- }
- NS_COM_GLUE nsresult
- CallGetService(const nsCID &aClass, const nsIID &aIID, void **aResult);
- NS_COM_GLUE nsresult
- CallGetService(const char *aContractID, const nsIID &aIID, void **aResult);
- // type-safe shortcuts for calling |GetService|
- template <class DestinationType>
- inline
- nsresult
- CallGetService( const nsCID &aClass,
- DestinationType** aDestination)
- {
- NS_PRECONDITION(aDestination, "null parameter");
- return CallGetService(aClass,
- NS_GET_IID(DestinationType),
- NS_REINTERPRET_CAST(void**, aDestination));
- }
- template <class DestinationType>
- inline
- nsresult
- CallGetService( const char *aContractID,
- DestinationType** aDestination)
- {
- NS_PRECONDITION(aContractID, "null parameter");
- NS_PRECONDITION(aDestination, "null parameter");
- return CallGetService(aContractID,
- NS_GET_IID(DestinationType),
- NS_REINTERPRET_CAST(void**, aDestination));
- }
- #endif