gecko-dev/xpcom/glue/nsServiceManagerUtils.h
2012-05-21 12:12:37 +01:00

102 lines
2.7 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#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_TEMPLATE_IID(DestinationType),
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_TEMPLATE_IID(DestinationType),
reinterpret_cast<void**>(aDestination));
}
#endif