mirror of
https://github.com/classilla/tenfourfox.git
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277 lines
8.0 KiB
C++
277 lines
8.0 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef nsComponentManagerUtils_h__
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#define nsComponentManagerUtils_h__
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#include "nscore.h"
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#include "nsCOMPtr.h"
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#include "nsIFactory.h"
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nsresult CallCreateInstance(const nsCID& aClass, nsISupports* aDelegate,
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const nsIID& aIID, void** aResult);
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nsresult CallCreateInstance(const char* aContractID, nsISupports* aDelegate,
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const nsIID& aIID, void** aResult);
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nsresult CallGetClassObject(const nsCID& aClass, const nsIID& aIID,
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void** aResult);
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nsresult CallGetClassObject(const char* aContractID, const nsIID& aIID,
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void** aResult);
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class MOZ_STACK_CLASS nsCreateInstanceByCID final : public nsCOMPtr_helper
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{
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public:
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nsCreateInstanceByCID(const nsCID& aCID, nsISupports* aOuter,
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nsresult* aErrorPtr)
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: mCID(aCID)
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, mOuter(aOuter)
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, mErrorPtr(aErrorPtr)
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{
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}
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virtual nsresult NS_FASTCALL operator()(const nsIID&, void**) const
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override;
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private:
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const nsCID& mCID;
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nsISupports* MOZ_NON_OWNING_REF mOuter;
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nsresult* mErrorPtr;
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};
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class MOZ_STACK_CLASS nsCreateInstanceByContractID final : public nsCOMPtr_helper
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{
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public:
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nsCreateInstanceByContractID(const char* aContractID, nsISupports* aOuter,
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nsresult* aErrorPtr)
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: mContractID(aContractID)
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, mOuter(aOuter)
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, mErrorPtr(aErrorPtr)
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{
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}
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virtual nsresult NS_FASTCALL operator()(const nsIID&, void**) const override;
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private:
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const char* mContractID;
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nsISupports* MOZ_NON_OWNING_REF mOuter;
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nsresult* mErrorPtr;
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};
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class MOZ_STACK_CLASS nsCreateInstanceFromFactory final : public nsCOMPtr_helper
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{
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public:
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nsCreateInstanceFromFactory(nsIFactory* aFactory, nsISupports* aOuter,
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nsresult* aErrorPtr)
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: mFactory(aFactory)
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, mOuter(aOuter)
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, mErrorPtr(aErrorPtr)
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{
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}
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virtual nsresult NS_FASTCALL operator()(const nsIID&, void**) const override;
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private:
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nsIFactory* MOZ_NON_OWNING_REF mFactory;
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nsISupports* MOZ_NON_OWNING_REF mOuter;
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nsresult* mErrorPtr;
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};
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inline const nsCreateInstanceByCID
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do_CreateInstance(const nsCID& aCID, nsresult* aError = 0)
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{
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return nsCreateInstanceByCID(aCID, 0, aError);
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}
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inline const nsCreateInstanceByCID
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do_CreateInstance(const nsCID& aCID, nsISupports* aOuter, nsresult* aError = 0)
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{
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return nsCreateInstanceByCID(aCID, aOuter, aError);
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}
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inline const nsCreateInstanceByContractID
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do_CreateInstance(const char* aContractID, nsresult* aError = 0)
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{
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return nsCreateInstanceByContractID(aContractID, 0, aError);
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}
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inline const nsCreateInstanceByContractID
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do_CreateInstance(const char* aContractID, nsISupports* aOuter,
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nsresult* aError = 0)
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{
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return nsCreateInstanceByContractID(aContractID, aOuter, aError);
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}
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inline const nsCreateInstanceFromFactory
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do_CreateInstance(nsIFactory* aFactory, nsresult* aError = 0)
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{
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return nsCreateInstanceFromFactory(aFactory, 0, aError);
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}
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inline const nsCreateInstanceFromFactory
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do_CreateInstance(nsIFactory* aFactory, nsISupports* aOuter,
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nsresult* aError = 0)
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{
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return nsCreateInstanceFromFactory(aFactory, aOuter, aError);
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}
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class MOZ_STACK_CLASS nsGetClassObjectByCID final : public nsCOMPtr_helper
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{
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public:
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nsGetClassObjectByCID(const nsCID& aCID, nsresult* aErrorPtr)
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: mCID(aCID)
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, mErrorPtr(aErrorPtr)
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{
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}
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virtual nsresult NS_FASTCALL operator()(const nsIID&, void**) const override;
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private:
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const nsCID& mCID;
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nsresult* mErrorPtr;
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};
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class MOZ_STACK_CLASS nsGetClassObjectByContractID final : public nsCOMPtr_helper
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{
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public:
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nsGetClassObjectByContractID(const char* aContractID, nsresult* aErrorPtr)
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: mContractID(aContractID)
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, mErrorPtr(aErrorPtr)
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{
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}
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virtual nsresult NS_FASTCALL operator()(const nsIID&, void**) const override;
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private:
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const char* mContractID;
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nsresult* mErrorPtr;
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};
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/**
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* do_GetClassObject can be used to improve performance of callers
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* that call |CreateInstance| many times. They can cache the factory
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* and call do_CreateInstance or CallCreateInstance with the cached
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* factory rather than having the component manager retrieve it every
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* time.
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*/
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inline const nsGetClassObjectByCID
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do_GetClassObject(const nsCID& aCID, nsresult* aError = 0)
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{
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return nsGetClassObjectByCID(aCID, aError);
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}
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inline const nsGetClassObjectByContractID
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do_GetClassObject(const char* aContractID, nsresult* aError = 0)
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{
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return nsGetClassObjectByContractID(aContractID, aError);
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}
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// type-safe shortcuts for calling |CreateInstance|
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template<class DestinationType>
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inline nsresult
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CallCreateInstance(const nsCID& aClass,
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nsISupports* aDelegate,
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DestinationType** aDestination)
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{
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NS_PRECONDITION(aDestination, "null parameter");
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return CallCreateInstance(aClass, aDelegate,
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NS_GET_TEMPLATE_IID(DestinationType),
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reinterpret_cast<void**>(aDestination));
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}
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template<class DestinationType>
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inline nsresult
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CallCreateInstance(const nsCID& aClass, DestinationType** aDestination)
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{
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NS_PRECONDITION(aDestination, "null parameter");
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return CallCreateInstance(aClass, nullptr,
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NS_GET_TEMPLATE_IID(DestinationType),
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reinterpret_cast<void**>(aDestination));
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}
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template<class DestinationType>
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inline nsresult
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CallCreateInstance(const char* aContractID,
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nsISupports* aDelegate,
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DestinationType** aDestination)
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{
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NS_PRECONDITION(aContractID, "null parameter");
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NS_PRECONDITION(aDestination, "null parameter");
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return CallCreateInstance(aContractID,
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aDelegate,
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NS_GET_TEMPLATE_IID(DestinationType),
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reinterpret_cast<void**>(aDestination));
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}
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template<class DestinationType>
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inline nsresult
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CallCreateInstance(const char* aContractID, DestinationType** aDestination)
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{
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NS_PRECONDITION(aContractID, "null parameter");
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NS_PRECONDITION(aDestination, "null parameter");
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return CallCreateInstance(aContractID, nullptr,
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NS_GET_TEMPLATE_IID(DestinationType),
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reinterpret_cast<void**>(aDestination));
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}
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template<class DestinationType>
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inline nsresult
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CallCreateInstance(nsIFactory* aFactory,
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nsISupports* aDelegate,
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DestinationType** aDestination)
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{
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NS_PRECONDITION(aFactory, "null parameter");
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NS_PRECONDITION(aDestination, "null parameter");
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return aFactory->CreateInstance(aDelegate,
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NS_GET_TEMPLATE_IID(DestinationType),
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reinterpret_cast<void**>(aDestination));
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}
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template<class DestinationType>
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inline nsresult
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CallCreateInstance(nsIFactory* aFactory, DestinationType** aDestination)
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{
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NS_PRECONDITION(aFactory, "null parameter");
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NS_PRECONDITION(aDestination, "null parameter");
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return aFactory->CreateInstance(nullptr,
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NS_GET_TEMPLATE_IID(DestinationType),
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reinterpret_cast<void**>(aDestination));
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}
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template<class DestinationType>
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inline nsresult
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CallGetClassObject(const nsCID& aClass, DestinationType** aDestination)
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{
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NS_PRECONDITION(aDestination, "null parameter");
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return CallGetClassObject(aClass, NS_GET_TEMPLATE_IID(DestinationType),
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reinterpret_cast<void**>(aDestination));
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}
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template<class DestinationType>
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inline nsresult
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CallGetClassObject(const char* aContractID, DestinationType** aDestination)
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{
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NS_PRECONDITION(aDestination, "null parameter");
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return CallGetClassObject(aContractID, NS_GET_TEMPLATE_IID(DestinationType),
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reinterpret_cast<void**>(aDestination));
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}
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#endif /* nsComponentManagerUtils_h__ */
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