The Tor Browser: accessible/src/windows/msaa/nsWinUtils.h@6474c204b198

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

     1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

     2 /* vim:expandtab:shiftwidth=2:tabstop=2:

     3  */

     4 /* This Source Code Form is subject to the terms of the Mozilla Public

     5  * License, v. 2.0. If a copy of the MPL was not distributed with this

     6  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     8 #ifndef nsWinUtils_h_

     9 #define nsWinUtils_h_

    11 #include <windows.h>

    13 #include "nsIDOMCSSStyleDeclaration.h"

    14 #include "nsCOMPtr.h"

    15 #include "nsRefPtrHashtable.h"

    17 class nsIArray;

    18 class nsIContent;

    20 namespace mozilla {

    21 namespace a11y {

    23 class DocAccessible;

    25 const LPCWSTR kClassNameRoot = L"MozillaUIWindowClass";

    26 const LPCWSTR kClassNameTabContent = L"MozillaContentWindowClass";

    28 class nsWinUtils

    29 {

    30 public:

    31   /**

    32    * Return computed styles declaration for the given node.

    33    *

    34    * @note Please use it carefully since it can shutdown the accessible tree

    35    *       you operate on.

    36    */

    37   static already_AddRefed<nsIDOMCSSStyleDeclaration>

    38     GetComputedStyleDeclaration(nsIContent* aContent);

    40   /**

    41    * Start window emulation if presence of specific AT is detected.

    42    */

    43   static bool MaybeStartWindowEmulation();

    45   /**

    46    * Free resources used for window emulation.

    47    */

    48   static void ShutdownWindowEmulation();

    50   /**

    51    * Return true if window emulation is started.

    52    */

    53   static bool IsWindowEmulationStarted();

    55   /**

    56    * Helper to register window class.

    57    */

    58   static void RegisterNativeWindow(LPCWSTR aWindowClass);

    60   /**

    61    * Helper to create a window.

    62    */

    63   static HWND CreateNativeWindow(LPCWSTR aWindowClass, HWND aParentWnd,

    64                                  int aX, int aY, int aWidth, int aHeight,

    65                                  bool aIsActive);

    67   /**

    68    * Helper to show window.

    69    */

    70   static void ShowNativeWindow(HWND aWnd);

    72   /**

    73    * Helper to hide window.

    74    */

    75   static void HideNativeWindow(HWND aWnd);

    77   /**

    78    * Cache for HWNDs of windows created for document accessibles in windows

    79    * emulation mode.

    80    */

    81   static nsRefPtrHashtable<nsPtrHashKey<void>, DocAccessible>* sHWNDCache;

    82 };

    84 } // namespace a11y

    85 } // namespace mozilla

    87 #endif

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