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