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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public License
* Version 1.0 (the "NPL"); you may not use this file except in
* compliance with the NPL. You may obtain a copy of the NPL at
* http://www.mozilla.org/NPL/
*
* Software distributed under the NPL is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
* for the specific language governing rights and limitations under the
* NPL.
*
* The Initial Developer of this code under the NPL is Netscape
* Communications Corporation. Portions created by Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
* Reserved.
*/
#include "nscore.h"
#include "nsIFactory.h"
#include "nsISupports.h"
#include "nsPluginsCID.h"
#include "nsPluginHostImpl.h"
static NS_DEFINE_IID(kCPluginHost, NS_PLUGIN_HOST_CID);
static NS_DEFINE_IID(kISupportsIID, NS_ISUPPORTS_IID);
static NS_DEFINE_IID(kIFactoryIID, NS_IFACTORY_IID);
class nsPluginFactory : public nsIFactory
{
public:
// nsISupports methods
NS_IMETHOD QueryInterface(const nsIID &aIID,
void **aResult);
NS_IMETHOD_(nsrefcnt) AddRef(void);
NS_IMETHOD_(nsrefcnt) Release(void);
// nsIFactory methods
NS_IMETHOD CreateInstance(nsISupports *aOuter,
const nsIID &aIID,
void **aResult);
NS_IMETHOD LockFactory(PRBool aLock);
nsPluginFactory(const nsCID &aClass);
protected:
virtual ~nsPluginFactory();
private:
nsrefcnt mRefCnt;
nsCID mClassID;
};
nsPluginFactory :: nsPluginFactory(const nsCID &aClass)
{
mRefCnt = 0;
mClassID = aClass;
}
nsPluginFactory :: ~nsPluginFactory()
{
NS_ASSERTION(mRefCnt == 0, "non-zero refcnt at destruction");
}
nsresult nsPluginFactory :: QueryInterface(const nsIID &aIID,
void **aResult)
{
if (aResult == NULL) {
return NS_ERROR_NULL_POINTER;
}
// Always NULL result, in case of failure
*aResult = NULL;
if (aIID.Equals(kISupportsIID)) {
*aResult = (void *)(nsISupports*)this;
} else if (aIID.Equals(kIFactoryIID)) {
*aResult = (void *)(nsIFactory*)this;
}
if (*aResult == NULL) {
return NS_NOINTERFACE;
}
AddRef(); // Increase reference count for caller
return NS_OK;
}
nsrefcnt nsPluginFactory :: AddRef()
{
return ++mRefCnt;
}
nsrefcnt nsPluginFactory :: Release()
{
if (--mRefCnt == 0) {
delete this;
return 0; // Don't access mRefCnt after deleting!
}
return mRefCnt;
}
nsresult nsPluginFactory :: CreateInstance(nsISupports *aOuter,
const nsIID &aIID,
void **aResult)
{
if (aResult == NULL) {
return NS_ERROR_NULL_POINTER;
}
*aResult = NULL;
nsISupports *inst = nsnull;
if (mClassID.Equals(kCPluginHost)) {
inst = (nsISupports *)(nsIPluginManager *)new nsPluginHostImpl();
}
if (inst == NULL) {
return NS_ERROR_OUT_OF_MEMORY;
}
nsresult res = inst->QueryInterface(aIID, aResult);
if (res != NS_OK) {
// We didn't get the right interface, so clean up
delete inst;
}
return res;
}
nsresult nsPluginFactory :: LockFactory(PRBool aLock)
{
// Not implemented in simplest case.
return NS_OK;
}
// return the proper factory to the caller
extern "C" NS_PLUGIN nsresult NSGetFactory(const nsCID &aClass, nsIFactory **aFactory)
{
if (nsnull == aFactory) {
return NS_ERROR_NULL_POINTER;
}
*aFactory = new nsPluginFactory(aClass);
if (nsnull == aFactory) {
return NS_ERROR_OUT_OF_MEMORY;
}
return (*aFactory)->QueryInterface(kIFactoryIID, (void**)aFactory);
}
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