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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "nsInterfaceRequestorAgg.h"
#include "nsIInterfaceRequestor.h"
#include "nsCOMPtr.h"
#include "mozilla/Attributes.h"
#include "nsThreadUtils.h"
#include "nsProxyRelease.h"
class nsInterfaceRequestorAgg final : public nsIInterfaceRequestor {
public:
// XXX This needs to support threadsafe refcounting until we fix bug 243591.
NS_DECL_THREADSAFE_ISUPPORTS
NS_DECL_NSIINTERFACEREQUESTOR
nsInterfaceRequestorAgg(nsIInterfaceRequestor* aFirst,
nsIInterfaceRequestor* aSecond,
nsIEventTarget* aConsumerTarget = nullptr)
: mFirst(aFirst), mSecond(aSecond), mConsumerTarget(aConsumerTarget) {
if (!mConsumerTarget) {
mConsumerTarget = mozilla::GetCurrentEventTarget();
}
}
private:
~nsInterfaceRequestorAgg();
nsCOMPtr<nsIInterfaceRequestor> mFirst, mSecond;
nsCOMPtr<nsIEventTarget> mConsumerTarget;
};
NS_IMPL_ISUPPORTS(nsInterfaceRequestorAgg, nsIInterfaceRequestor)
NS_IMETHODIMP
nsInterfaceRequestorAgg::GetInterface(const nsIID& aIID, void** aResult) {
nsresult rv = NS_ERROR_NO_INTERFACE;
if (mFirst) {
rv = mFirst->GetInterface(aIID, aResult);
}
if (mSecond && NS_FAILED(rv)) {
rv = mSecond->GetInterface(aIID, aResult);
}
return rv;
}
nsInterfaceRequestorAgg::~nsInterfaceRequestorAgg() {
NS_ProxyRelease("nsInterfaceRequestorAgg::mFirst", mConsumerTarget,
mFirst.forget());
NS_ProxyRelease("nsInterfaceRequestorAgg::mSecond", mConsumerTarget,
mSecond.forget());
}
nsresult NS_NewInterfaceRequestorAggregation(nsIInterfaceRequestor* aFirst,
nsIInterfaceRequestor* aSecond,
nsIInterfaceRequestor** aResult) {
*aResult = new nsInterfaceRequestorAgg(aFirst, aSecond);
NS_ADDREF(*aResult);
return NS_OK;
}
nsresult NS_NewInterfaceRequestorAggregation(nsIInterfaceRequestor* aFirst,
nsIInterfaceRequestor* aSecond,
nsIEventTarget* aTarget,
nsIInterfaceRequestor** aResult) {
*aResult = new nsInterfaceRequestorAgg(aFirst, aSecond, aTarget);
NS_ADDREF(*aResult);
return NS_OK;
}