159 lines
4.6 KiB
C++
159 lines
4.6 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 "DocAccessibleWrap.h"
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#include "Compatibility.h"
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#include "DocAccessibleChild.h"
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#include "nsWinUtils.h"
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#include "Role.h"
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#include "RootAccessible.h"
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#include "sdnDocAccessible.h"
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#include "nsIDocShell.h"
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#include "nsIInterfaceRequestorUtils.h"
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using namespace mozilla;
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using namespace mozilla::a11y;
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////////////////////////////////////////////////////////////////////////////////
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// DocAccessibleWrap
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////////////////////////////////////////////////////////////////////////////////
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DocAccessibleWrap::
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DocAccessibleWrap(nsIDocument* aDocument, nsIPresShell* aPresShell) :
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DocAccessible(aDocument, aPresShell), mHWND(nullptr)
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{
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}
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DocAccessibleWrap::~DocAccessibleWrap()
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{
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}
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IMPL_IUNKNOWN_QUERY_HEAD(DocAccessibleWrap)
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if (aIID == IID_ISimpleDOMDocument) {
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*aInstancePtr = static_cast<ISimpleDOMDocument*>(new sdnDocAccessible(this));
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static_cast<IUnknown*>(*aInstancePtr)->AddRef();
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return S_OK;
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}
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IMPL_IUNKNOWN_QUERY_TAIL_INHERITED(HyperTextAccessibleWrap)
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STDMETHODIMP
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DocAccessibleWrap::get_accParent(
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/* [retval][out] */ IDispatch __RPC_FAR *__RPC_FAR *ppdispParent)
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{
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// We might be a top-level document in a content process.
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DocAccessibleChild* ipcDoc = IPCDoc();
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if (!ipcDoc) {
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return DocAccessible::get_accParent(ppdispParent);
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}
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IAccessible* dispParent = ipcDoc->GetParentIAccessible();
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if (!dispParent) {
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return S_FALSE;
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}
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dispParent->AddRef();
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*ppdispParent = static_cast<IDispatch*>(dispParent);
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return S_OK;
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}
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STDMETHODIMP
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DocAccessibleWrap::get_accValue(VARIANT aVarChild, BSTR __RPC_FAR* aValue)
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{
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if (!aValue)
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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 accValue
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// Check for real value first
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HRESULT hr = AccessibleWrap::get_accValue(aVarChild, aValue);
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if (FAILED(hr) || *aValue || aVarChild.lVal != CHILDID_SELF)
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return hr;
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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 = 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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return hr;
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nsAutoString url;
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URL(url);
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if (url.IsEmpty())
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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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////////////////////////////////////////////////////////////////////////////////
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// Accessible
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void
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DocAccessibleWrap::Shutdown()
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{
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// Do window emulation specific shutdown if emulation was started.
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if (nsWinUtils::IsWindowEmulationStarted()) {
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// Destroy window created for root document.
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if (mDocFlags & eTabDocument) {
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HWND hWnd = static_cast<HWND>(mHWND);
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::RemovePropW(hWnd, kPropNameDocAcc);
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::DestroyWindow(hWnd);
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}
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mHWND = nullptr;
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}
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DocAccessible::Shutdown();
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}
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////////////////////////////////////////////////////////////////////////////////
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// DocAccessible public
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void*
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DocAccessibleWrap::GetNativeWindow() const
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{
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return mHWND ? mHWND : DocAccessible::GetNativeWindow();
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}
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////////////////////////////////////////////////////////////////////////////////
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// DocAccessible protected
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void
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DocAccessibleWrap::DoInitialUpdate()
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{
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DocAccessible::DoInitialUpdate();
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if (nsWinUtils::IsWindowEmulationStarted()) {
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// Create window for tab document.
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if (mDocFlags & eTabDocument) {
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a11y::RootAccessible* rootDocument = RootAccessible();
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bool isActive = true;
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nsIntRect rect(CW_USEDEFAULT, CW_USEDEFAULT, 0, 0);
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if (Compatibility::IsDolphin()) {
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rect = Bounds();
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nsIntRect rootRect = rootDocument->Bounds();
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rect.x = rootRect.x - rect.x;
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rect.y -= rootRect.y;
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nsCOMPtr<nsISupports> container = mDocumentNode->GetContainer();
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nsCOMPtr<nsIDocShell> docShell = do_QueryInterface(container);
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docShell->GetIsActive(&isActive);
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}
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HWND parentWnd = reinterpret_cast<HWND>(rootDocument->GetNativeWindow());
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mHWND = nsWinUtils::CreateNativeWindow(kClassNameTabContent, parentWnd,
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rect.x, rect.y,
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rect.width, rect.height, isActive);
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::SetPropW(static_cast<HWND>(mHWND), kPropNameDocAcc, (HANDLE)this);
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} else {
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DocAccessible* parentDocument = ParentDocument();
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if (parentDocument)
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mHWND = parentDocument->GetNativeWindow();
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}
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}
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}
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