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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /accessible/windows/msaa/ServiceProvider.cpp | |
parent | Initial commit. (diff) | |
download | firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip |
Adding upstream version 115.7.0esr.upstream/115.7.0esr
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | accessible/windows/msaa/ServiceProvider.cpp | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/accessible/windows/msaa/ServiceProvider.cpp b/accessible/windows/msaa/ServiceProvider.cpp new file mode 100644 index 0000000000..b2b005f3b4 --- /dev/null +++ b/accessible/windows/msaa/ServiceProvider.cpp @@ -0,0 +1,106 @@ +/* -*- 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 "ServiceProvider.h" + +#include "AccessibleApplication_i.c" +#include "ApplicationAccessibleWrap.h" +#include "DocAccessible.h" +#include "nsAccUtils.h" +#include "nsCoreUtils.h" +#include "Relation.h" +#include "RootAccessible.h" +#include "uiaRawElmProvider.h" + +#include "mozilla/a11y/DocAccessibleChild.h" +#include "mozilla/Preferences.h" + +#include "ISimpleDOM.h" + +namespace mozilla { +namespace a11y { + +IMPL_IUNKNOWN_QUERY_HEAD(ServiceProvider) +IMPL_IUNKNOWN_QUERY_IFACE(IServiceProvider) +IMPL_IUNKNOWN_QUERY_TAIL_AGGREGATED(mMsaa) + +//////////////////////////////////////////////////////////////////////////////// +// IServiceProvider + +STDMETHODIMP +ServiceProvider::QueryService(REFGUID aGuidService, REFIID aIID, + void** aInstancePtr) { + if (!aInstancePtr) return E_INVALIDARG; + + *aInstancePtr = nullptr; + Accessible* acc = mMsaa->Acc(); + if (!acc) { + return CO_E_OBJNOTCONNECTED; + } + AccessibleWrap* localAcc = mMsaa->LocalAcc(); + + // UIA IAccessibleEx + if (aGuidService == IID_IAccessibleEx && + Preferences::GetBool("accessibility.uia.enable") && localAcc) { + uiaRawElmProvider* accEx = new uiaRawElmProvider(localAcc); + HRESULT hr = accEx->QueryInterface(aIID, aInstancePtr); + if (FAILED(hr)) delete accEx; + + return hr; + } + + // Provide a special service ID for getting the accessible for the browser tab + // document that contains this accessible object. If this accessible object + // is not inside a browser tab then the service fails with E_NOINTERFACE. + // A use case for this is for screen readers that need to switch context or + // 'virtual buffer' when focus moves from one browser tab area to another. + static const GUID SID_IAccessibleContentDocument = { + 0xa5d8e1f3, + 0x3571, + 0x4d8f, + {0x95, 0x21, 0x07, 0xed, 0x28, 0xfb, 0x07, 0x2e}}; + if (aGuidService == SID_IAccessibleContentDocument) { + if (aIID != IID_IAccessible) return E_NOINTERFACE; + + Relation rel = acc->RelationByType(RelationType::CONTAINING_TAB_PANE); + RefPtr<IAccessible> next = MsaaAccessible::GetFrom(rel.Next()); + if (!next) { + return E_NOINTERFACE; + } + + next.forget(aInstancePtr); + return S_OK; + } + + // Can get to IAccessibleApplication from any node via QS + // Note: in case of JAWS we want to check if aIID is + // IID_IAccessibleApplication. + if (aGuidService == IID_IAccessibleApplication || + aIID == IID_IAccessibleApplication) { + ApplicationAccessibleWrap* applicationAcc = + static_cast<ApplicationAccessibleWrap*>(ApplicationAcc()); + if (!applicationAcc) return E_NOINTERFACE; + + RefPtr<IAccessible> appIa; + applicationAcc->GetNativeInterface(getter_AddRefs(appIa)); + return appIa->QueryInterface(aIID, aInstancePtr); + } + + static const GUID IID_SimpleDOMDeprecated = { + 0x0c539790, + 0x12e4, + 0x11cf, + {0xb6, 0x61, 0x00, 0xaa, 0x00, 0x4c, 0xd6, 0xd8}}; + if (aGuidService == IID_ISimpleDOMNode || + aGuidService == IID_SimpleDOMDeprecated || + aGuidService == IID_IAccessible || aGuidService == IID_IAccessible2) + return mMsaa->QueryInterface(aIID, aInstancePtr); + + return E_INVALIDARG; +} + +} // namespace a11y +} // namespace mozilla |