From 26a029d407be480d791972afb5975cf62c9360a6 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 19 Apr 2024 02:47:55 +0200 Subject: Adding upstream version 124.0.1. Signed-off-by: Daniel Baumann --- accessible/windows/msaa/nsWinUtils.h | 105 +++++++++++++++++++++++++++++++++++ 1 file changed, 105 insertions(+) create mode 100644 accessible/windows/msaa/nsWinUtils.h (limited to 'accessible/windows/msaa/nsWinUtils.h') diff --git a/accessible/windows/msaa/nsWinUtils.h b/accessible/windows/msaa/nsWinUtils.h new file mode 100644 index 0000000000..7ae0cadc5d --- /dev/null +++ b/accessible/windows/msaa/nsWinUtils.h @@ -0,0 +1,105 @@ +/* -*- 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 +#include + +#include "nsICSSDeclaration.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"; +const LPCWSTR kPropNameDocAccParent = L"MozDocAccessibleParent"; + +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 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); + + typedef std::function NativeWindowCreateProc; + + /** + * Helper to create a window. + * + * NB: If additional setup needs to be done once the window has been created, + * you should do so via aOnCreateProc. Hooks will fire during the + * CreateNativeWindow call, thus triggering events in the AT. + * Using aOnCreateProc guarantees that your additional initialization will + * have completed prior to the AT receiving window creation events. + * + * For example: + * + * nsWinUtils::NativeWindowCreateProc onCreate([](HWND aHwnd) -> void { + * DoSomeAwesomeInitializationStuff(aHwnd); + * DoMoreAwesomeInitializationStuff(aHwnd); + * }); + * HWND hwnd = nsWinUtils::CreateNativeWindow(..., &onCreate); + * // Doing further initialization work to hwnd on this line is too late! + */ + static HWND CreateNativeWindow( + LPCWSTR aWindowClass, HWND aParentWnd, int aX, int aY, int aWidth, + int aHeight, bool aIsActive, + NativeWindowCreateProc* aOnCreateProc = nullptr); + + /** + * 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 -- cgit v1.2.3