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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:expandtab:shiftwidth=2:tabstop=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/. */
#ifndef nsWinUtils_h_
#define nsWinUtils_h_
#include <windows.h>
#include "nsIDOMCSSStyleDeclaration.h"
#include "nsCOMPtr.h"
class nsIContent;
namespace mozilla {
namespace a11y {
class DocAccessible;
const LPCWSTR kClassNameRoot = L"MozillaUIWindowClass";
const LPCWSTR kClassNameTabContent = L"MozillaContentWindowClass";
const LPCWSTR kPropNameDocAcc = L"MozDocAccessible";
class nsWinUtils
{
public:
/**
* Return computed styles declaration for the given node.
*
* @note Please use it carefully since it can shutdown the accessible tree
* you operate on.
*/
static already_AddRefed<nsIDOMCSSStyleDeclaration>
GetComputedStyleDeclaration(nsIContent* aContent);
/**
* Start window emulation if presence of specific AT is detected.
*/
static bool MaybeStartWindowEmulation();
/**
* Free resources used for window emulation.
*/
static void ShutdownWindowEmulation();
/**
* Return true if window emulation is started.
*/
static bool IsWindowEmulationStarted() { return sWindowEmulationStarted; }
/**
* Helper to register window class.
*/
static void RegisterNativeWindow(LPCWSTR aWindowClass);
/**
* Helper to create a window.
*/
static HWND CreateNativeWindow(LPCWSTR aWindowClass, HWND aParentWnd,
int aX, int aY, int aWidth, int aHeight,
bool aIsActive);
/**
* Helper to show window.
*/
static void ShowNativeWindow(HWND aWnd);
/**
* Helper to hide window.
*/
static void HideNativeWindow(HWND aWnd);
private:
/**
* Flag that indicates if window emulation is started.
*/
static bool sWindowEmulationStarted;
};
} // namespace a11y
} // namespace mozilla
#endif
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