accessible/src/windows/msaa/nsWinUtils.h@97036ab72558 (annotated)
accessible/src/windows/msaa/nsWinUtils.h
Tue, 06 Jan 2015 21:39:09 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Tue, 06 Jan 2015 21:39:09 +0100
- branch
- TOR_BUG_9701
- changeset 8
- 97036ab72558
- permissions
- -rw-r--r--
Conditionally force memory storage according to privacy.thirdparty.isolate;
This solves Tor bug #9701, complying with disk avoidance documented in
https://www.torproject.org/projects/torbrowser/design/#disk-avoidance.
| michael@0 | 1 | /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
| michael@0 | 2 | /* vim:expandtab:shiftwidth=2:tabstop=2: |
| michael@0 | 3 | */ |
| michael@0 | 4 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 5 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 6 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 7 | |
| michael@0 | 8 | #ifndef nsWinUtils_h_ |
| michael@0 | 9 | #define nsWinUtils_h_ |
| michael@0 | 10 | |
| michael@0 | 11 | #include <windows.h> |
| michael@0 | 12 | |
| michael@0 | 13 | #include "nsIDOMCSSStyleDeclaration.h" |
| michael@0 | 14 | #include "nsCOMPtr.h" |
| michael@0 | 15 | #include "nsRefPtrHashtable.h" |
| michael@0 | 16 | |
| michael@0 | 17 | class nsIArray; |
| michael@0 | 18 | class nsIContent; |
| michael@0 | 19 | |
| michael@0 | 20 | namespace mozilla { |
| michael@0 | 21 | namespace a11y { |
| michael@0 | 22 | |
| michael@0 | 23 | class DocAccessible; |
| michael@0 | 24 | |
| michael@0 | 25 | const LPCWSTR kClassNameRoot = L"MozillaUIWindowClass"; |
| michael@0 | 26 | const LPCWSTR kClassNameTabContent = L"MozillaContentWindowClass"; |
| michael@0 | 27 | |
| michael@0 | 28 | class nsWinUtils |
| michael@0 | 29 | { |
| michael@0 | 30 | public: |
| michael@0 | 31 | /** |
| michael@0 | 32 | * Return computed styles declaration for the given node. |
| michael@0 | 33 | * |
| michael@0 | 34 | * @note Please use it carefully since it can shutdown the accessible tree |
| michael@0 | 35 | * you operate on. |
| michael@0 | 36 | */ |
| michael@0 | 37 | static already_AddRefed<nsIDOMCSSStyleDeclaration> |
| michael@0 | 38 | GetComputedStyleDeclaration(nsIContent* aContent); |
| michael@0 | 39 | |
| michael@0 | 40 | /** |
| michael@0 | 41 | * Start window emulation if presence of specific AT is detected. |
| michael@0 | 42 | */ |
| michael@0 | 43 | static bool MaybeStartWindowEmulation(); |
| michael@0 | 44 | |
| michael@0 | 45 | /** |
| michael@0 | 46 | * Free resources used for window emulation. |
| michael@0 | 47 | */ |
| michael@0 | 48 | static void ShutdownWindowEmulation(); |
| michael@0 | 49 | |
| michael@0 | 50 | /** |
| michael@0 | 51 | * Return true if window emulation is started. |
| michael@0 | 52 | */ |
| michael@0 | 53 | static bool IsWindowEmulationStarted(); |
| michael@0 | 54 | |
| michael@0 | 55 | /** |
| michael@0 | 56 | * Helper to register window class. |
| michael@0 | 57 | */ |
| michael@0 | 58 | static void RegisterNativeWindow(LPCWSTR aWindowClass); |
| michael@0 | 59 | |
| michael@0 | 60 | /** |
| michael@0 | 61 | * Helper to create a window. |
| michael@0 | 62 | */ |
| michael@0 | 63 | static HWND CreateNativeWindow(LPCWSTR aWindowClass, HWND aParentWnd, |
| michael@0 | 64 | int aX, int aY, int aWidth, int aHeight, |
| michael@0 | 65 | bool aIsActive); |
| michael@0 | 66 | |
| michael@0 | 67 | /** |
| michael@0 | 68 | * Helper to show window. |
| michael@0 | 69 | */ |
| michael@0 | 70 | static void ShowNativeWindow(HWND aWnd); |
| michael@0 | 71 | |
| michael@0 | 72 | /** |
| michael@0 | 73 | * Helper to hide window. |
| michael@0 | 74 | */ |
| michael@0 | 75 | static void HideNativeWindow(HWND aWnd); |
| michael@0 | 76 | |
| michael@0 | 77 | /** |
| michael@0 | 78 | * Cache for HWNDs of windows created for document accessibles in windows |
| michael@0 | 79 | * emulation mode. |
| michael@0 | 80 | */ |
| michael@0 | 81 | static nsRefPtrHashtable<nsPtrHashKey<void>, DocAccessible>* sHWNDCache; |
| michael@0 | 82 | }; |
| michael@0 | 83 | |
| michael@0 | 84 | } // namespace a11y |
| michael@0 | 85 | } // namespace mozilla |
| michael@0 | 86 | |
| michael@0 | 87 | #endif |
