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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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 "mozilla/a11y/Compatibility.h"
#include "mozilla/a11y/DocAccessibleParent.h"
#include "mozilla/dom/BrowserParent.h"
#include "MsaaRootAccessible.h"
#include "Relation.h"
#include "RootAccessible.h"
#include "EnumVariant.h"
#include <oleauto.h>
using namespace mozilla;
using namespace mozilla::a11y;
RootAccessible* MsaaRootAccessible::RootAcc() {
return static_cast<RootAccessible*>(LocalAcc());
}
////////////////////////////////////////////////////////////////////////////////
// Aggregated IUnknown
HRESULT
MsaaRootAccessible::InternalQueryInterface(REFIID aIid, void** aOutInterface) {
if (!aOutInterface) {
return E_INVALIDARG;
}
if (NS_WARN_IF(!NS_IsMainThread())) {
// Bug 1949617: The COM marshaler sometimes calls QueryInterface on the
// wrong thread.
return RPC_E_WRONG_THREAD;
}
// InternalQueryInterface should always return its internal unknown
// when queried for IID_IUnknown...
if (aIid == IID_IUnknown) {
RefPtr<IUnknown> punk(&mInternalUnknown);
punk.forget(aOutInterface);
return S_OK;
}
if (Compatibility::IsUiaEnabled() &&
aIid == IID_IRawElementProviderFragmentRoot) {
RefPtr<IRawElementProviderFragmentRoot> root = this;
root.forget(aOutInterface);
return S_OK;
}
// ...Otherwise we pass through to the base COM implementation of
// QueryInterface which is provided by MsaaDocAccessible.
return MsaaDocAccessible::QueryInterface(aIid, aOutInterface);
}
ULONG
MsaaRootAccessible::InternalAddRef() { return MsaaDocAccessible::AddRef(); }
ULONG
MsaaRootAccessible::InternalRelease() { return MsaaDocAccessible::Release(); }
already_AddRefed<IUnknown> MsaaRootAccessible::Aggregate(IUnknown* aOuter) {
MOZ_ASSERT(mOuter &&
(mOuter == &mInternalUnknown || mOuter == aOuter || !aOuter));
if (!aOuter) {
// If there is no aOuter then we should always set mOuter to
// mInternalUnknown. This is standard COM aggregation stuff.
mOuter = &mInternalUnknown;
return nullptr;
}
mOuter = aOuter;
return GetInternalUnknown();
}
already_AddRefed<IUnknown> MsaaRootAccessible::GetInternalUnknown() {
RefPtr<IUnknown> result(&mInternalUnknown);
return result.forget();
}
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