зеркало из https://github.com/mozilla/gecko-dev.git
227 строки
13 KiB
C++
227 строки
13 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
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing
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* rights and limitations under the License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All
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* Rights Reserved.
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*
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* Contributor(s):
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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_CONTRACTID "@mozilla.org/generic-factory;1"
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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 = nsnull);
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////////////////////////////////////////////////////////////////////////////////
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// Generic Modules
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//
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// (See xpcom/sample/nsSampleModule.cpp to see how to use this.)
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#include "nsIModule.h"
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typedef NS_CALLBACK(NSRegisterSelfProcPtr) (nsIComponentManager *aCompMgr,
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nsIFile *aPath,
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const char *registryLocation,
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const char *componentType);
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typedef NS_CALLBACK(NSUnregisterSelfProcPtr) (nsIComponentManager *aCompMgr,
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nsIFile *aPath,
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const char *registryLocation);
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/**
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* Use this type to define a list of module component info to pass to
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* NS_NewGenericModule. E.g.:
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* static nsModuleComponentInfo components[] = { ... };
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* See xpcom/sample/nsSampleModule.cpp for more info.
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*/
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struct nsModuleComponentInfo {
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const char* mDescription;
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nsCID mCID;
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const char* mContractID;
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nsIGenericFactory::ConstructorProcPtr mConstructor;
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NSRegisterSelfProcPtr mRegisterSelfProc;
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NSUnregisterSelfProcPtr mUnregisterSelfProc;
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};
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typedef void (PR_CALLBACK *nsModuleDestructorProc) (nsIModule *self);
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extern NS_COM nsresult
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NS_NewGenericModule(const char* moduleName,
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PRUint32 componentCount,
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nsModuleComponentInfo* components,
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nsModuleDestructorProc dtor,
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nsIModule* *result);
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#define NS_IMPL_NSGETMODULE(_name, _components) \
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NS_IMPL_NSGETMODULE_WITH_DTOR(_name, _components, nsnull)
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#define NS_IMPL_NSGETMODULE_WITH_DTOR(_name, _components, _dtor) \
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\
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PRUint32 NSGetModule_components_count = \
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sizeof(_components) / sizeof(_components[0]); \
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\
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nsModuleComponentInfo* NSGetModule_components = (_components); \
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\
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extern "C" NS_EXPORT nsresult NSGetModule(nsIComponentManager *servMgr, \
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nsIFile* location, \
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nsIModule** result) \
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{ \
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return NS_NewGenericModule((_name), \
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NSGetModule_components_count, \
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NSGetModule_components, \
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_dtor, result); \
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}
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////////////////////////////////////////////////////////////////////////////////
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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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NS_ADDREF(inst); \
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rv = inst->_InitMethod(); \
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if(NS_SUCCEEDED(rv)) { \
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rv = inst->QueryInterface(aIID, aResult); \
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} \
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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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// 'Constructor' that uses an existing getter function that gets a singleton.
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// NOTE: assumes that getter does an AddRef - so additional AddRef is not done.
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#define NS_GENERIC_FACTORY_SINGLETON_CONSTRUCTOR(_InstanceClass, _GetterProc) \
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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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inst = _GetterProc(); \
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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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#endif /* nsIGenericFactory_h___ */
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