gecko-dev/xpcom/ds/nsObserver.cpp

92 lines
2.5 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 1.0 (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.
*/
#define NS_IMPL_IDS
#include "pratom.h"
#include "nsIFactory.h"
#include "nsIServiceManager.h"
#include "nsRepository.h"
#include "nsIObserver.h"
#include "nsObserver.h"
#include "nsString.h"
static NS_DEFINE_IID(kIObserverIID, NS_IOBSERVER_IID);
static NS_DEFINE_IID(kObserverCID, NS_OBSERVER_CID);
////////////////////////////////////////////////////////////////////////////////
// nsObserver Implementation
NS_IMPL_AGGREGATED(nsObserver)
NS_COM nsresult NS_NewObserver(nsIObserver** anObserver, nsISupports* outer)
{
return nsObserver::Create(outer, kIObserverIID, (void**)anObserver);
}
NS_METHOD
nsObserver::Create(nsISupports* outer, const nsIID& aIID, void* *anObserver)
{
if (anObserver == NULL)
return NS_ERROR_NULL_POINTER;
nsObserver* it = new nsObserver(outer);
if (it == NULL)
return NS_ERROR_OUT_OF_MEMORY;
nsISupports* inner = outer ? it->GetInner() : it;
nsresult rv = inner->QueryInterface(aIID, anObserver);
if (NS_FAILED(rv)) {
delete it;
return rv;
}
return rv;
}
nsObserver::nsObserver(nsISupports* outer)
{
NS_INIT_AGGREGATED(outer);
}
nsObserver::~nsObserver(void)
{
}
NS_IMETHODIMP
nsObserver::AggregatedQueryInterface(const nsIID& aIID, void** aInstancePtr)
{
if (aInstancePtr == nsnull)
return NS_ERROR_NULL_POINTER;
if (aIID.Equals(nsIObserver::GetIID()) ||
aIID.Equals(nsCOMTypeInfo<nsISupports>::GetIID())) {
*aInstancePtr = (nsIObserver*)this;
NS_ADDREF_THIS();
return NS_OK;
}
return NS_NOINTERFACE;
}
NS_IMETHODIMP
nsObserver::Observe( nsISupports *, const PRUnichar *, const PRUnichar * ) {
nsresult rv = NS_OK;
return rv;
}
////////////////////////////////////////////////////////////////////////////////