gecko-dev/rdf/chrome/build/nsChromeFactory.cpp

/* -*- 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 1.0 (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 "nsIServiceManager.h"
#include "nsIComponentManager.h"
#include "nsIGenericFactory.h"
#include "nsIChromeRegistry.h"
#include "nscore.h"

static NS_DEFINE_CID(kComponentManagerCID, NS_COMPONENTMANAGER_CID);
static NS_DEFINE_CID(kGenericFactoryCID, NS_GENERICFACTORY_CID);
static NS_DEFINE_CID(kChromeRegistryCID, NS_CHROMEREGISTRY_CID);

static NS_IMETHODIMP
NS_ConstructChromeRegistry(nsISupports *aOuter, REFNSIID aIID, void **aResult)
{
    nsresult rv;
    NS_ASSERTION(aOuter == nsnull, "no aggregation");
    nsIChromeRegistry* chromeRegistry;
    rv = NS_NewChromeRegistry(&chromeRegistry);
    if (NS_FAILED(rv)) {
        NS_ERROR("Unable to construct chrome registry");
        return rv;
    }
    rv = chromeRegistry->QueryInterface(aIID, aResult);
    NS_ASSERTION(NS_SUCCEEDED(rv), "unable to find correct interface");
    NS_RELEASE(chromeRegistry);
    return rv;
}

extern "C" PR_IMPLEMENT(nsresult)
NSGetFactory(nsISupports* aServMgr,
             const nsCID &aClass,
             const char *aClassName,
             const char *aProgID,
             nsIFactory **aFactory)
{
    nsresult rv;
    NS_ASSERTION(aFactory != nsnull, "bad factory pointer");
    NS_ASSERTION(aClass.Equals(kChromeRegistryCID), "incorrectly registered");

    NS_WITH_SERVICE1(nsIComponentManager, compMgr,
                     aServMgr, kComponentManagerCID, &rv);
    if (NS_FAILED(rv)) return rv;

    nsIGenericFactory* factory;
    rv = compMgr->CreateInstance(kGenericFactoryCID, nsnull, nsIGenericFactory::GetIID(), 
                                 (void**)&factory);
    if (NS_FAILED(rv)) return rv;

    rv = factory->SetConstructor(NS_ConstructChromeRegistry);
    if (NS_FAILED(rv)) {
        delete factory;
        return rv;
    }
    NS_ADDREF(factory);
    *aFactory = factory;
    return NS_OK;
}

extern "C" PR_IMPLEMENT(nsresult)
NSRegisterSelf(nsISupports* aServMgr , const char* aPath)
{
    nsresult rv;

    NS_WITH_SERVICE1(nsIComponentManager, compMgr,
                     aServMgr, kComponentManagerCID, &rv);
    if (NS_FAILED(rv)) return rv;

    rv = compMgr->RegisterComponent(kChromeRegistryCID,
                                    "Chrome Registry", nsnull, aPath,
                                    PR_TRUE, PR_TRUE);

    return rv;
}

extern "C" PR_IMPLEMENT(nsresult)
NSUnregisterSelf(nsISupports* aServMgr, const char* aPath)
{
    nsresult rv;
    NS_WITH_SERVICE1(nsIComponentManager, compMgr,
                     aServMgr, kComponentManagerCID, &rv);
    if (NS_FAILED(rv)) return rv;

    rv = compMgr->UnregisterComponent(kChromeRegistryCID, aPath);

    return rv;
}