gecko-dev/xpcom/components/nsGenericFactory.h

95 lines
2.8 KiB
C++

/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
*
* The contents of this file are subject to the Netscape Public
* License Version 1.1 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.mozilla.org/NPL/
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
*/
#ifndef nsGenericFactory_h___
#define nsGenericFactory_h___
#include "nsIGenericFactory.h"
/**
* Most factories follow this simple pattern, so why not just use a function pointer
* for most creation operations?
*/
class nsGenericFactory : public nsIGenericFactory {
public:
static const nsCID& CID() { static nsCID cid = NS_GENERICFACTORY_CID; return cid; }
nsGenericFactory(ConstructorProcPtr constructor = NULL);
virtual ~nsGenericFactory();
NS_DECL_ISUPPORTS
NS_IMETHOD CreateInstance(nsISupports *aOuter, REFNSIID aIID, void **aResult);
NS_IMETHOD LockFactory(PRBool aLock);
/**
* Establishes the generic factory's constructor function, which will be called
* by CreateInstance.
*/
NS_IMETHOD SetConstructor(ConstructorProcPtr constructor);
/**
* Establishes the generic factory's destructor function, which will be called
* whe the generic factory is deleted. This is used to notify the DLL that
* an instance of one of its generic factories is going away.
*/
NS_IMETHOD SetDestructor(DestructorProcPtr destructor);
static NS_METHOD Create(nsISupports* outer, const nsIID& aIID, void* *aInstancePtr);
private:
ConstructorProcPtr mConstructor;
DestructorProcPtr mDestructor;
};
////////////////////////////////////////////////////////////////////////////////
#include "nsIModule.h"
#include "nsHashtable.h"
class nsGenericModule : public nsIModule
{
public:
nsGenericModule(const char* moduleName, PRUint32 componentCount,
nsModuleComponentInfo* components,
nsModuleDestructorProc dtor);
virtual ~nsGenericModule();
NS_DECL_ISUPPORTS
NS_DECL_NSIMODULE
protected:
nsresult Initialize();
void Shutdown();
PRBool mInitialized;
const char* mModuleName;
PRUint32 mComponentCount;
nsModuleComponentInfo* mComponents;
nsSupportsHashtable mFactories;
nsModuleDestructorProc mDtor;
};
#endif /* nsGenericFactory_h___ */