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251 lines
15 KiB
C++
251 lines
15 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 NS_IMETHODIMP \
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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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return rv; \
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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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return rv; \
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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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return rv; \
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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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return rv; \
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} \
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#define NS_GENERIC_FACTORY_CONSTRUCTOR_INIT(_InstanceClass, _InitMethod) \
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static NS_IMETHODIMP \
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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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return rv; \
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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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return rv; \
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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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return rv; \
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} \
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rv = inst->_InitMethod(); \
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if(NS_FAILED(rv)) { \
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NS_DELETEXPCOM(inst); \
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return rv; \
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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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return rv; \
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} \
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#define NS_DECL_MODULE(_class) \
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class _class : public nsIModule { \
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public: \
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_class(); \
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virtual ~_class(); \
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NS_DECL_ISUPPORTS \
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NS_DECL_NSIMODULE \
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};
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#define NS_IMPL_MODULE_CORE(_class) \
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_class::_class() { NS_INIT_ISUPPORTS(); } \
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_class::~_class() {}
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#define NS_IMPL_MODULE_GETCLASSOBJECT(_class, _table) \
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NS_IMETHODIMP \
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_class::GetClassObject(nsIComponentManager *aCompMgr, \
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const nsCID& aClass, \
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const nsIID& aIID, \
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void** aResult) \
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{ \
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if (aResult == nsnull) \
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return NS_ERROR_NULL_POINTER; \
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\
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*aResult = nsnull; \
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\
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nsresult rv; \
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nsIGenericFactory::ConstructorProcPtr constructor = nsnull; \
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nsCOMPtr<nsIGenericFactory> fact; \
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\
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for (unsigned int i=0; i<(sizeof(_table) / sizeof(_table[0])); i++) { \
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if (aClass.Equals(_table[i].cid)) { \
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constructor = _table[i].constructor; \
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break; \
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} \
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} \
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\
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if (!constructor) return NS_ERROR_FAILURE; \
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rv = NS_NewGenericFactory(getter_AddRefs(fact), constructor); \
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if (NS_FAILED(rv)) return rv; \
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\
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return fact->QueryInterface(aIID, aResult); \
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}
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#define NS_IMPL_MODULE_REGISTERSELF(_class, _table) \
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NS_IMETHODIMP \
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_class::RegisterSelf(nsIComponentManager *aCompMgr, \
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nsIFileSpec* aPath, \
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const char* registryLocation, \
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const char* componentType) \
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{ \
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nsresult rv = NS_OK; \
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for (unsigned int i=0; i<(sizeof(_table) / sizeof(_table[0])); i++) { \
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rv = aCompMgr->RegisterComponentSpec(_table[i].cid, \
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_table[i].description, \
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_table[i].progid, \
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aPath, \
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PR_TRUE, PR_TRUE); \
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} \
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return rv; \
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}
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#define NS_IMPL_MODULE_UNREGISTERSELF(_class, _table) \
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NS_IMETHODIMP \
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_class::UnregisterSelf(nsIComponentManager *aCompMgr, \
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nsIFileSpec* aPath, \
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const char* registryLocation) \
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{ \
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nsresult rv = NS_OK; \
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for (unsigned int i=0; i<(sizeof(_table) / sizeof(_table[0])); i++) { \
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rv = aCompMgr->UnregisterComponentSpec(_table[i].cid, aPath); \
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} \
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return rv; \
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}
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#define NS_IMPL_MODULE_CANUNLOAD(_class) \
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NS_IMETHODIMP \
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_class::CanUnload(nsIComponentManager *aCompMgr, PRBool *okToUnload) \
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{ \
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if (!okToUnload) \
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return NS_ERROR_INVALID_POINTER; \
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\
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*okToUnload = PR_FALSE; \
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return NS_ERROR_FAILURE; \
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}
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#define NS_IMPL_NSGETMODULE(_class) \
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static _class *g##_class; \
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extern "C" NS_EXPORT nsresult \
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NSGetModule(nsIComponentManager *servMgr, \
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nsIFileSpec* location, \
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nsIModule** aResult) \
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{ \
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nsresult rv = NS_OK; \
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\
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if (!aResult) return NS_ERROR_NULL_POINTER; \
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if (!g##_class) { \
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g##_class = new _class; \
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if (!g##_class) return NS_ERROR_OUT_OF_MEMORY; \
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} \
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\
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NS_ADDREF(g##_class); \
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if (g##_class) \
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rv = g##_class->QueryInterface(NS_GET_IID(nsIModule), \
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(void **)aResult); \
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NS_RELEASE(g##_class); \
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return rv; \
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}
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#define NS_IMPL_MODULE(_table) \
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NS_DECL_MODULE(nsModule) \
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NS_IMPL_MODULE_CORE(nsModule) \
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NS_IMPL_ISUPPORTS1(nsModule, nsIModule) \
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NS_IMPL_MODULE_GETCLASSOBJECT(nsModule, _table) \
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NS_IMPL_MODULE_REGISTERSELF(nsModule, _table) \
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NS_IMPL_MODULE_UNREGISTERSELF(nsModule, _table) \
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NS_IMPL_MODULE_CANUNLOAD(nsModule)
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#endif /* nsIGenericFactory_h___ */
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