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08b40ceb27
KeyboardShortcut is only implemented for LocalAccessible because KeyboardShortcut isn't currently relevant (or supported) for RemoteAccessible. AriaProperties can't be supported for RemoteAccessible currently. See the code comment for details. Differential Revision: https://phabricator.services.mozilla.com/D202551
100 lines
3.2 KiB
C++
100 lines
3.2 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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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 "ServiceProvider.h"
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#include "AccessibleApplication_i.c"
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#include "ApplicationAccessibleWrap.h"
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#include "DocAccessible.h"
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#include "nsAccUtils.h"
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#include "nsCoreUtils.h"
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#include "Relation.h"
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#include "RootAccessible.h"
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#include "uiaRawElmProvider.h"
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#include "mozilla/a11y/DocAccessibleChild.h"
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#include "mozilla/StaticPrefs_accessibility.h"
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#include "ISimpleDOM.h"
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namespace mozilla {
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namespace a11y {
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IMPL_IUNKNOWN_QUERY_HEAD(ServiceProvider)
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IMPL_IUNKNOWN_QUERY_IFACE(IServiceProvider)
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IMPL_IUNKNOWN_QUERY_TAIL_AGGREGATED(mMsaa)
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////////////////////////////////////////////////////////////////////////////////
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// IServiceProvider
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STDMETHODIMP
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ServiceProvider::QueryService(REFGUID aGuidService, REFIID aIID,
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void** aInstancePtr) {
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if (!aInstancePtr) return E_INVALIDARG;
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*aInstancePtr = nullptr;
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Accessible* acc = mMsaa->Acc();
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if (!acc) {
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return CO_E_OBJNOTCONNECTED;
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}
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// Provide a special service ID for getting the accessible for the browser tab
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// document that contains this accessible object. If this accessible object
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// is not inside a browser tab then the service fails with E_NOINTERFACE.
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// A use case for this is for screen readers that need to switch context or
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// 'virtual buffer' when focus moves from one browser tab area to another.
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static const GUID SID_IAccessibleContentDocument = {
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0xa5d8e1f3,
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0x3571,
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0x4d8f,
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{0x95, 0x21, 0x07, 0xed, 0x28, 0xfb, 0x07, 0x2e}};
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if (aGuidService == SID_IAccessibleContentDocument) {
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if (aIID != IID_IAccessible) return E_NOINTERFACE;
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Relation rel = acc->RelationByType(RelationType::CONTAINING_TAB_PANE);
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RefPtr<IAccessible> next = MsaaAccessible::GetFrom(rel.Next());
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if (!next) {
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return E_NOINTERFACE;
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}
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next.forget(aInstancePtr);
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return S_OK;
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}
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// Can get to IAccessibleApplication from any node via QS
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// Note: in case of JAWS we want to check if aIID is
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// IID_IAccessibleApplication.
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if (aGuidService == IID_IAccessibleApplication ||
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aIID == IID_IAccessibleApplication) {
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ApplicationAccessibleWrap* applicationAcc =
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static_cast<ApplicationAccessibleWrap*>(ApplicationAcc());
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if (!applicationAcc) return E_NOINTERFACE;
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RefPtr<IAccessible> appIa;
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applicationAcc->GetNativeInterface(getter_AddRefs(appIa));
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return appIa->QueryInterface(aIID, aInstancePtr);
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}
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static const GUID IID_SimpleDOMDeprecated = {
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0x0c539790,
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0x12e4,
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0x11cf,
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{0xb6, 0x61, 0x00, 0xaa, 0x00, 0x4c, 0xd6, 0xd8}};
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if (aGuidService == IID_ISimpleDOMNode ||
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aGuidService == IID_SimpleDOMDeprecated ||
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aGuidService == IID_IAccessible || aGuidService == IID_IAccessible2 ||
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// UIA IAccessibleEx
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(aGuidService == IID_IAccessibleEx &&
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StaticPrefs::accessibility_uia_enable())) {
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return mMsaa->QueryInterface(aIID, aInstancePtr);
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}
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return E_INVALIDARG;
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}
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} // namespace a11y
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} // namespace mozilla
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