Mirror of roytam1's UXP fork just in case Moonchild and Tobin decide to go after him
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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 "DocAccessibleWrap.h"
#include "Compatibility.h"
#include "DocAccessibleChild.h"
#include "nsWinUtils.h"
#include "Role.h"
#include "RootAccessible.h"
#include "sdnDocAccessible.h"
#include "nsIDocShell.h"
#include "nsIInterfaceRequestorUtils.h"
using namespace mozilla;
using namespace mozilla::a11y;
////////////////////////////////////////////////////////////////////////////////
// DocAccessibleWrap
////////////////////////////////////////////////////////////////////////////////
DocAccessibleWrap::
DocAccessibleWrap(nsIDocument* aDocument, nsIPresShell* aPresShell) :
DocAccessible(aDocument, aPresShell), mHWND(nullptr)
{
}
DocAccessibleWrap::~DocAccessibleWrap()
{
}
IMPL_IUNKNOWN_QUERY_HEAD(DocAccessibleWrap)
if (aIID == IID_ISimpleDOMDocument) {
*aInstancePtr = static_cast<ISimpleDOMDocument*>(new sdnDocAccessible(this));
static_cast<IUnknown*>(*aInstancePtr)->AddRef();
return S_OK;
}
IMPL_IUNKNOWN_QUERY_TAIL_INHERITED(HyperTextAccessibleWrap)
STDMETHODIMP
DocAccessibleWrap::get_accParent(
/* [retval][out] */ IDispatch __RPC_FAR *__RPC_FAR *ppdispParent)
{
// We might be a top-level document in a content process.
DocAccessibleChild* ipcDoc = IPCDoc();
if (!ipcDoc) {
return DocAccessible::get_accParent(ppdispParent);
}
IAccessible* dispParent = ipcDoc->GetParentIAccessible();
if (!dispParent) {
return S_FALSE;
}
dispParent->AddRef();
*ppdispParent = static_cast<IDispatch*>(dispParent);
return S_OK;
}
STDMETHODIMP
DocAccessibleWrap::get_accValue(VARIANT aVarChild, BSTR __RPC_FAR* aValue)
{
A11Y_TRYBLOCK_BEGIN
if (!aValue)
return E_INVALIDARG;
*aValue = nullptr;
// For backwards-compat, we still support old MSAA hack to provide URL in accValue
// Check for real value first
HRESULT hr = AccessibleWrap::get_accValue(aVarChild, aValue);
if (FAILED(hr) || *aValue || aVarChild.lVal != CHILDID_SELF)
return hr;
// If document is being used to create a widget, don't use the URL hack
roles::Role role = Role();
if (role != roles::DOCUMENT && role != roles::APPLICATION &&
role != roles::DIALOG && role != roles::ALERT)
return hr;
nsAutoString url;
URL(url);
if (url.IsEmpty())
return S_FALSE;
*aValue = ::SysAllocStringLen(url.get(), url.Length());
return *aValue ? S_OK : E_OUTOFMEMORY;
A11Y_TRYBLOCK_END
}
////////////////////////////////////////////////////////////////////////////////
// Accessible
void
DocAccessibleWrap::Shutdown()
{
// Do window emulation specific shutdown if emulation was started.
if (nsWinUtils::IsWindowEmulationStarted()) {
// Destroy window created for root document.
if (mDocFlags & eTabDocument) {
HWND hWnd = static_cast<HWND>(mHWND);
::RemovePropW(hWnd, kPropNameDocAcc);
::DestroyWindow(hWnd);
}
mHWND = nullptr;
}
DocAccessible::Shutdown();
}
////////////////////////////////////////////////////////////////////////////////
// DocAccessible public
void*
DocAccessibleWrap::GetNativeWindow() const
{
return mHWND ? mHWND : DocAccessible::GetNativeWindow();
}
////////////////////////////////////////////////////////////////////////////////
// DocAccessible protected
void
DocAccessibleWrap::DoInitialUpdate()
{
DocAccessible::DoInitialUpdate();
if (nsWinUtils::IsWindowEmulationStarted()) {
// Create window for tab document.
if (mDocFlags & eTabDocument) {
a11y::RootAccessible* rootDocument = RootAccessible();
bool isActive = true;
nsIntRect rect(CW_USEDEFAULT, CW_USEDEFAULT, 0, 0);
if (Compatibility::IsDolphin()) {
rect = Bounds();
nsIntRect rootRect = rootDocument->Bounds();
rect.x = rootRect.x - rect.x;
rect.y -= rootRect.y;
nsCOMPtr<nsISupports> container = mDocumentNode->GetContainer();
nsCOMPtr<nsIDocShell> docShell = do_QueryInterface(container);
docShell->GetIsActive(&isActive);
}
HWND parentWnd = reinterpret_cast<HWND>(rootDocument->GetNativeWindow());
mHWND = nsWinUtils::CreateNativeWindow(kClassNameTabContent, parentWnd,
rect.x, rect.y,
rect.width, rect.height, isActive);
::SetPropW(static_cast<HWND>(mHWND), kPropNameDocAcc, (HANDLE)this);
} else {
DocAccessible* parentDocument = ParentDocument();
if (parentDocument)
mHWND = parentDocument->GetNativeWindow();
}
}
}