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12770de85d
This identifies the root of our implementation and allows for focus querying and hit testing. We also implement IRawElementProviderSimple::get_HostRawElementProvider to connect to UIA's HWND provider. Differential Revision: https://phabricator.services.mozilla.com/D205182
76 lines
2.3 KiB
C++
76 lines
2.3 KiB
C++
/* -*- Mode: C++; tab-width: 2; 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 "mozilla/a11y/DocAccessibleParent.h"
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#include "mozilla/dom/BrowserParent.h"
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#include "mozilla/StaticPrefs_accessibility.h"
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#include "mozilla/WindowsVersion.h"
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#include "MsaaRootAccessible.h"
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#include "Relation.h"
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#include "RootAccessible.h"
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#include "EnumVariant.h"
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#include <oleauto.h>
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using namespace mozilla;
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using namespace mozilla::a11y;
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RootAccessible* MsaaRootAccessible::RootAcc() {
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return static_cast<RootAccessible*>(LocalAcc());
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}
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////////////////////////////////////////////////////////////////////////////////
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// Aggregated IUnknown
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HRESULT
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MsaaRootAccessible::InternalQueryInterface(REFIID aIid, void** aOutInterface) {
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if (!aOutInterface) {
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return E_INVALIDARG;
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}
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// InternalQueryInterface should always return its internal unknown
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// when queried for IID_IUnknown...
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if (aIid == IID_IUnknown) {
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RefPtr<IUnknown> punk(&mInternalUnknown);
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punk.forget(aOutInterface);
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return S_OK;
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}
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if (StaticPrefs::accessibility_uia_enable() &&
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aIid == IID_IRawElementProviderFragmentRoot) {
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RefPtr<IRawElementProviderFragmentRoot> root = this;
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root.forget(aOutInterface);
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return S_OK;
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}
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// ...Otherwise we pass through to the base COM implementation of
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// QueryInterface which is provided by MsaaDocAccessible.
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return MsaaDocAccessible::QueryInterface(aIid, aOutInterface);
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}
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ULONG
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MsaaRootAccessible::InternalAddRef() { return MsaaDocAccessible::AddRef(); }
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ULONG
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MsaaRootAccessible::InternalRelease() { return MsaaDocAccessible::Release(); }
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already_AddRefed<IUnknown> MsaaRootAccessible::Aggregate(IUnknown* aOuter) {
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MOZ_ASSERT(mOuter &&
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(mOuter == &mInternalUnknown || mOuter == aOuter || !aOuter));
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if (!aOuter) {
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// If there is no aOuter then we should always set mOuter to
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// mInternalUnknown. This is standard COM aggregation stuff.
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mOuter = &mInternalUnknown;
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return nullptr;
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}
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mOuter = aOuter;
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return GetInternalUnknown();
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}
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already_AddRefed<IUnknown> MsaaRootAccessible::GetInternalUnknown() {
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RefPtr<IUnknown> result(&mInternalUnknown);
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return result.forget();
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}
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