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accessible/src/windows/msaa/DocAccessibleWrap.cpp@b8a032363ba2 (annotated)

accessible/src/windows/msaa/DocAccessibleWrap.cpp

Thu, 22 Jan 2015 13:21:57 +0100

author

Michael Schloh von Bennewitz <michael@schloh.com>

date

Thu, 22 Jan 2015 13:21:57 +0100

branch

TOR_BUG_9701

changeset 15

b8a032363ba2

permissions

-rw-r--r--

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

michael@0	1	/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0	2	/* vim: set ts=2 et sw=2 tw=80: */
michael@0	3	/* This Source Code Form is subject to the terms of the Mozilla Public
michael@0	4	* License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0	5	* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0	6
michael@0	7	#include "DocAccessibleWrap.h"
michael@0	8
michael@0	9	#include "Compatibility.h"
michael@0	10	#include "nsWinUtils.h"
michael@0	11	#include "mozilla/dom/TabChild.h"
michael@0	12	#include "Role.h"
michael@0	13	#include "RootAccessible.h"
michael@0	14	#include "sdnDocAccessible.h"
michael@0	15	#include "Statistics.h"
michael@0	16
michael@0	17	#include "nsIDocShell.h"
michael@0	18	#include "nsIInterfaceRequestorUtils.h"
michael@0	19
michael@0	20	using namespace mozilla;
michael@0	21	using namespace mozilla::a11y;
michael@0	22
michael@0	23	////////////////////////////////////////////////////////////////////////////////
michael@0	24	// DocAccessibleWrap
michael@0	25	////////////////////////////////////////////////////////////////////////////////
michael@0	26
michael@0	27	DocAccessibleWrap::
michael@0	28	DocAccessibleWrap(nsIDocument* aDocument, nsIContent* aRootContent,
michael@0	29	nsIPresShell* aPresShell) :
michael@0	30	DocAccessible(aDocument, aRootContent, aPresShell), mHWND(nullptr)
michael@0	31	{
michael@0	32	}
michael@0	33
michael@0	34	DocAccessibleWrap::~DocAccessibleWrap()
michael@0	35	{
michael@0	36	}
michael@0	37
michael@0	38	IMPL_IUNKNOWN_QUERY_HEAD(DocAccessibleWrap)
michael@0	39	if (aIID == IID_ISimpleDOMDocument) {
michael@0	40	statistics::ISimpleDOMUsed();
michael@0	41	*aInstancePtr = static_cast<ISimpleDOMDocument*>(new sdnDocAccessible(this));
michael@0	42	static_cast<IUnknown*>(*aInstancePtr)->AddRef();
michael@0	43	return S_OK;
michael@0	44	}
michael@0	45	IMPL_IUNKNOWN_QUERY_TAIL_INHERITED(HyperTextAccessibleWrap)
michael@0	46
michael@0	47	STDMETHODIMP
michael@0	48	DocAccessibleWrap::get_accValue(VARIANT aVarChild, BSTR __RPC_FAR* aValue)
michael@0	49	{
michael@0	50	A11Y_TRYBLOCK_BEGIN
michael@0	51
michael@0	52	if (!aValue)
michael@0	53	return E_INVALIDARG;
michael@0	54	*aValue = nullptr;
michael@0	55
michael@0	56	// For backwards-compat, we still support old MSAA hack to provide URL in accValue
michael@0	57	// Check for real value first
michael@0	58	HRESULT hr = AccessibleWrap::get_accValue(aVarChild, aValue);
michael@0	59	if (FAILED(hr) || *aValue || aVarChild.lVal != CHILDID_SELF)
michael@0	60	return hr;
michael@0	61
michael@0	62	// If document is being used to create a widget, don't use the URL hack
michael@0	63	roles::Role role = Role();
michael@0	64	if (role != roles::DOCUMENT && role != roles::APPLICATION &&
michael@0	65	role != roles::DIALOG && role != roles::ALERT)
michael@0	66	return hr;
michael@0	67
michael@0	68	nsAutoString URL;
michael@0	69	nsresult rv = GetURL(URL);
michael@0	70	if (URL.IsEmpty())
michael@0	71	return S_FALSE;
michael@0	72
michael@0	73	*aValue = ::SysAllocStringLen(URL.get(), URL.Length());
michael@0	74	return *aValue ? S_OK : E_OUTOFMEMORY;
michael@0	75
michael@0	76	A11Y_TRYBLOCK_END
michael@0	77	}
michael@0	78
michael@0	79	////////////////////////////////////////////////////////////////////////////////
michael@0	80	// Accessible
michael@0	81
michael@0	82	void
michael@0	83	DocAccessibleWrap::Shutdown()
michael@0	84	{
michael@0	85	// Do window emulation specific shutdown if emulation was started.
michael@0	86	if (nsWinUtils::IsWindowEmulationStarted()) {
michael@0	87	// Destroy window created for root document.
michael@0	88	if (mDocFlags & eTabDocument) {
michael@0	89	nsWinUtils::sHWNDCache->Remove(mHWND);
michael@0	90	::DestroyWindow(static_cast<HWND>(mHWND));
michael@0	91	}
michael@0	92
michael@0	93	mHWND = nullptr;
michael@0	94	}
michael@0	95
michael@0	96	DocAccessible::Shutdown();
michael@0	97	}
michael@0	98
michael@0	99	////////////////////////////////////////////////////////////////////////////////
michael@0	100	// DocAccessible public
michael@0	101
michael@0	102	void*
michael@0	103	DocAccessibleWrap::GetNativeWindow() const
michael@0	104	{
michael@0	105	return mHWND ? mHWND : DocAccessible::GetNativeWindow();
michael@0	106	}
michael@0	107
michael@0	108	////////////////////////////////////////////////////////////////////////////////
michael@0	109	// DocAccessible protected
michael@0	110
michael@0	111	void
michael@0	112	DocAccessibleWrap::DoInitialUpdate()
michael@0	113	{
michael@0	114	DocAccessible::DoInitialUpdate();
michael@0	115
michael@0	116	if (nsWinUtils::IsWindowEmulationStarted()) {
michael@0	117	// Create window for tab document.
michael@0	118	if (mDocFlags & eTabDocument) {
michael@0	119	mozilla::dom::TabChild* tabChild =
michael@0	120	mozilla::dom::TabChild::GetFrom(mDocumentNode->GetShell());
michael@0	121
michael@0	122	a11y::RootAccessible* rootDocument = RootAccessible();
michael@0	123
michael@0	124	mozilla::WindowsHandle nativeData = 0;
michael@0	125	if (tabChild)
michael@0	126	tabChild->SendGetWidgetNativeData(&nativeData);
michael@0	127	else
michael@0	128	nativeData = reinterpret_cast<mozilla::WindowsHandle>(
michael@0	129	rootDocument->GetNativeWindow());
michael@0	130
michael@0	131	bool isActive = true;
michael@0	132	int32_t x = CW_USEDEFAULT, y = CW_USEDEFAULT, width = 0, height = 0;
michael@0	133	if (Compatibility::IsDolphin()) {
michael@0	134	GetBounds(&x, &y, &width, &height);
michael@0	135	int32_t rootX = 0, rootY = 0, rootWidth = 0, rootHeight = 0;
michael@0	136	rootDocument->GetBounds(&rootX, &rootY, &rootWidth, &rootHeight);
michael@0	137	x = rootX - x;
michael@0	138	y -= rootY;
michael@0	139
michael@0	140	nsCOMPtr<nsISupports> container = mDocumentNode->GetContainer();
michael@0	141	nsCOMPtr<nsIDocShell> docShell = do_QueryInterface(container);
michael@0	142	docShell->GetIsActive(&isActive);
michael@0	143	}
michael@0	144
michael@0	145	HWND parentWnd = reinterpret_cast<HWND>(nativeData);
michael@0	146	mHWND = nsWinUtils::CreateNativeWindow(kClassNameTabContent, parentWnd,
michael@0	147	x, y, width, height, isActive);
michael@0	148
michael@0	149	nsWinUtils::sHWNDCache->Put(mHWND, this);
michael@0	150
michael@0	151	} else {
michael@0	152	DocAccessible* parentDocument = ParentDocument();
michael@0	153	if (parentDocument)
michael@0	154	mHWND = parentDocument->GetNativeWindow();
michael@0	155	}
michael@0	156	}
michael@0	157	}