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96 lines
4.7 KiB
C++
96 lines
4.7 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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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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#ifndef nsIGenericFactory_h___
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#define nsIGenericFactory_h___
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#include "nsIFactory.h"
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// {3bc97f01-ccdf-11d2-bab8-b548654461fc}
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#define NS_GENERICFACTORY_CID \
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{ 0x3bc97f01, 0xccdf, 0x11d2, { 0xba, 0xb8, 0xb5, 0x48, 0x65, 0x44, 0x61, 0xfc } }
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// {3bc97f00-ccdf-11d2-bab8-b548654461fc}
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#define NS_IGENERICFACTORY_IID \
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{ 0x3bc97f00, 0xccdf, 0x11d2, { 0xba, 0xb8, 0xb5, 0x48, 0x65, 0x44, 0x61, 0xfc } }
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#define NS_GENERICFACTORY_PROGID "component:/netscape/generic-factory"
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#define NS_GENERICFACTORY_CLASSNAME "Generic Factory"
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/**
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* Provides a Generic nsIFactory implementation that can be used by
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* DLLs with very simple factory needs.
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*/
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class nsIGenericFactory : public nsIFactory {
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public:
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static const nsIID& GetIID() { static nsIID iid = NS_IGENERICFACTORY_IID; return iid; }
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typedef NS_CALLBACK(ConstructorProcPtr) (nsISupports *aOuter, REFNSIID aIID, void **aResult);
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typedef NS_CALLBACK(DestructorProcPtr) (void);
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/**
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* Establishes the generic factory's constructor function, which will be called
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* by CreateInstance.
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*/
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NS_IMETHOD SetConstructor(ConstructorProcPtr constructor) = 0;
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/**
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* Establishes the generic factory's destructor function, which will be called
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* whe the generic factory is deleted. This is used to notify the DLL that
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* an instance of one of its generic factories is going away.
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*/
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NS_IMETHOD SetDestructor(DestructorProcPtr destructor) = 0;
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};
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extern NS_COM nsresult
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NS_NewGenericFactory(nsIGenericFactory* *result,
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nsIGenericFactory::ConstructorProcPtr constructor,
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nsIGenericFactory::DestructorProcPtr destructor = NULL);
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#define NS_GENERIC_FACTORY_CONSTRUCTOR(_InstanceClass) \
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static nsresult \
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_InstanceClass##Constructor(nsISupports *aOuter, REFNSIID aIID, void **aResult) \
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{ \
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nsresult rv; \
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\
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_InstanceClass * inst; \
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\
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if (NULL == aResult) { \
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rv = NS_ERROR_NULL_POINTER; \
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goto done; \
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} \
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*aResult = NULL; \
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if (NULL != aOuter) { \
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rv = NS_ERROR_NO_AGGREGATION; \
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goto done; \
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} \
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\
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NS_NEWXPCOM(inst, _InstanceClass); \
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if (NULL == inst) { \
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rv = NS_ERROR_OUT_OF_MEMORY; \
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goto done; \
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} \
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NS_ADDREF(inst); \
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rv = inst->QueryInterface(aIID, aResult); \
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NS_RELEASE(inst); \
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\
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done: \
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return rv; \
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}
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#endif /* nsIGenericFactory_h___ */
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