4a4509a537
We have a lot of ISimpleDOM code which only works for LocalAccessible. Because all web content uses RemoteAccessible now, practically, the only usable ISimpleDOM functionality is that which works for RemoteAccessible. Therefore, remove all code that only works for LocalAccessible. Differential Revision: https://phabricator.services.mozilla.com/D241805
126 lines
4.1 KiB
C++
126 lines
4.1 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=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 "MsaaDocAccessible.h"
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#include "MsaaDocAccessible.h"
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#include "DocAccessibleChild.h"
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#include "mozilla/a11y/DocAccessibleParent.h"
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#include "nsAccessibilityService.h"
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#include "nsAccUtils.h"
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#include "nsWinUtils.h"
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#include "mozilla/a11y/Role.h"
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#include "ISimpleDOM.h"
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using namespace mozilla;
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using namespace mozilla::a11y;
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DocAccessible* MsaaDocAccessible::DocAcc() {
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return static_cast<DocAccessible*>(LocalAcc());
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}
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/* static */
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MsaaDocAccessible* MsaaDocAccessible::GetFrom(DocAccessible* aDoc) {
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return static_cast<MsaaDocAccessible*>(MsaaAccessible::GetFrom(aDoc));
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}
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/* static */
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MsaaDocAccessible* MsaaDocAccessible::GetFrom(DocAccessibleParent* aDoc) {
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return static_cast<MsaaDocAccessible*>(
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reinterpret_cast<MsaaAccessible*>(aDoc->GetWrapper()));
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}
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/* static */
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MsaaDocAccessible* MsaaDocAccessible::GetFromOwned(Accessible* aAcc) {
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if (RemoteAccessible* remoteAcc = aAcc->AsRemote()) {
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DocAccessibleParent* doc = remoteAcc->Document();
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if (!doc) {
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return nullptr;
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}
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return MsaaDocAccessible::GetFrom(doc);
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}
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DocAccessible* doc = aAcc->AsLocal()->Document();
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if (!doc) {
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return nullptr;
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}
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return MsaaDocAccessible::GetFrom(doc);
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}
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// IUnknown
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IMPL_IUNKNOWN_QUERY_HEAD(MsaaDocAccessible)
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IMPL_IUNKNOWN_QUERY_TAIL_INHERITED(ia2AccessibleHypertext)
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STDMETHODIMP
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MsaaDocAccessible::get_accParent(
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/* [retval][out] */ IDispatch __RPC_FAR* __RPC_FAR* ppdispParent) {
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if (!mAcc) {
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return CO_E_OBJNOTCONNECTED;
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}
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if (mAcc->IsRemote()) {
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DocAccessibleParent* remoteDoc = mAcc->AsRemote()->AsDoc();
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if (nsWinUtils::IsWindowEmulationStarted() && remoteDoc->IsTopLevel()) {
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// Window emulation is enabled and this is a top level document. Return
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// window system accessible object.
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HWND hwnd = remoteDoc->GetEmulatedWindowHandle();
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MOZ_ASSERT(hwnd);
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if (hwnd &&
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SUCCEEDED(::CreateStdAccessibleObject(
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hwnd, OBJID_WINDOW, IID_IAccessible, (void**)ppdispParent))) {
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return S_OK;
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}
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}
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return MsaaAccessible::get_accParent(ppdispParent);
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}
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DocAccessible* docAcc = DocAcc();
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MOZ_ASSERT(docAcc);
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// Return window system accessible object for root document accessibles, as
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// well as tab document accessibles if window emulation is enabled.
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MOZ_ASSERT(XRE_IsParentProcess());
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if ((!docAcc->ParentDocument() ||
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(nsWinUtils::IsWindowEmulationStarted() &&
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nsCoreUtils::IsTopLevelContentDocInProcess(docAcc->DocumentNode())))) {
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HWND hwnd = static_cast<HWND>(docAcc->GetNativeWindow());
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if (hwnd &&
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SUCCEEDED(::CreateStdAccessibleObject(
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hwnd, OBJID_WINDOW, IID_IAccessible, (void**)ppdispParent))) {
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return S_OK;
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}
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}
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return MsaaAccessible::get_accParent(ppdispParent);
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}
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STDMETHODIMP
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MsaaDocAccessible::get_accValue(VARIANT aVarChild, BSTR __RPC_FAR* aValue) {
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if (!aValue) return E_INVALIDARG;
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*aValue = nullptr;
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// For backwards-compat, we still support old MSAA hack to provide URL in
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// accValue Check for real value first
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HRESULT hr = MsaaAccessible::get_accValue(aVarChild, aValue);
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if (FAILED(hr) || *aValue || aVarChild.lVal != CHILDID_SELF) return hr;
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// MsaaAccessible::get_accValue should have failed (and thus we should have
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// returned early) if the Accessible is dead.
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MOZ_ASSERT(mAcc);
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// If document is being used to create a widget, don't use the URL hack
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roles::Role role = mAcc->Role();
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if (role != roles::DOCUMENT && role != roles::APPLICATION &&
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role != roles::DIALOG && role != roles::ALERT &&
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role != roles::NON_NATIVE_DOCUMENT)
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return hr;
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nsAutoString url;
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nsAccUtils::DocumentURL(mAcc, url);
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if (url.IsEmpty()) return S_FALSE;
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*aValue = ::SysAllocStringLen(url.get(), url.Length());
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return *aValue ? S_OK : E_OUTOFMEMORY;
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}
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