widget/windows/winrt/UIAAccessibilityBridge.h@ac0c01689b40 (annotated)
widget/windows/winrt/UIAAccessibilityBridge.h
Thu, 15 Jan 2015 15:59:08 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Thu, 15 Jan 2015 15:59:08 +0100
- branch
- TOR_BUG_9701
- changeset 10
- ac0c01689b40
- permissions
- -rw-r--r--
Implement a real Private Browsing Mode condition by changing the API/ABI;
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: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ |
| michael@0 | 2 | /* This Source Code Form is subject to the terms of the Mozilla Public |
| michael@0 | 3 | * License, v. 2.0. If a copy of the MPL was not distributed with this |
| michael@0 | 4 | * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ |
| michael@0 | 5 | |
| michael@0 | 6 | #pragma once |
| michael@0 | 7 | |
| michael@0 | 8 | #if defined(ACCESSIBILITY) |
| michael@0 | 9 | |
| michael@0 | 10 | #include "nsCOMPtr.h" |
| michael@0 | 11 | #include "nsIObserver.h" |
| michael@0 | 12 | #include "nsIObserverService.h" |
| michael@0 | 13 | #include "nsServiceManagerUtils.h" |
| michael@0 | 14 | #include "mozilla/a11y/Accessible.h" |
| michael@0 | 15 | |
| michael@0 | 16 | #include "mozwrlbase.h" |
| michael@0 | 17 | |
| michael@0 | 18 | namespace mozilla { |
| michael@0 | 19 | namespace widget { |
| michael@0 | 20 | namespace winrt { |
| michael@0 | 21 | |
| michael@0 | 22 | // Connects to our accessibility framework to receive |
| michael@0 | 23 | // events and query the dom. |
| michael@0 | 24 | class AccessibilityBridge : public nsIObserver |
| michael@0 | 25 | { |
| michael@0 | 26 | public: |
| michael@0 | 27 | NS_DECL_ISUPPORTS |
| michael@0 | 28 | NS_DECL_NSIOBSERVER |
| michael@0 | 29 | |
| michael@0 | 30 | AccessibilityBridge() {} |
| michael@0 | 31 | |
| michael@0 | 32 | ~AccessibilityBridge() { |
| michael@0 | 33 | Disconnect(); |
| michael@0 | 34 | } |
| michael@0 | 35 | |
| michael@0 | 36 | bool Init(IUnknown* aBridge, mozilla::a11y::Accessible* aPtr) { |
| michael@0 | 37 | mAccess = aPtr; |
| michael@0 | 38 | mBridge = aBridge; |
| michael@0 | 39 | return Connect(); |
| michael@0 | 40 | } |
| michael@0 | 41 | |
| michael@0 | 42 | bool Connect() { |
| michael@0 | 43 | nsresult rv; |
| michael@0 | 44 | |
| michael@0 | 45 | nsCOMPtr<nsIObserverService> observerService = |
| michael@0 | 46 | do_GetService("@mozilla.org/observer-service;1", &rv); |
| michael@0 | 47 | if (NS_FAILED(rv)) { |
| michael@0 | 48 | return false; |
| michael@0 | 49 | } |
| michael@0 | 50 | rv = observerService->AddObserver(this, "accessible-event", false); |
| michael@0 | 51 | if (NS_FAILED(rv)) { |
| michael@0 | 52 | return false; |
| michael@0 | 53 | } |
| michael@0 | 54 | return true; |
| michael@0 | 55 | } |
| michael@0 | 56 | |
| michael@0 | 57 | bool Connected() { |
| michael@0 | 58 | return mAccess ? true : false; |
| michael@0 | 59 | } |
| michael@0 | 60 | |
| michael@0 | 61 | void Disconnect() { |
| michael@0 | 62 | nsresult rv; |
| michael@0 | 63 | nsCOMPtr<nsIObserverService> observerService = |
| michael@0 | 64 | do_GetService("@mozilla.org/observer-service;1", &rv); |
| michael@0 | 65 | if (NS_FAILED(rv)) { |
| michael@0 | 66 | NS_WARNING("failed to get observersvc on shutdown."); |
| michael@0 | 67 | return; |
| michael@0 | 68 | } |
| michael@0 | 69 | observerService->RemoveObserver(this, "accessible-event"); |
| michael@0 | 70 | mAccess = nullptr; |
| michael@0 | 71 | } |
| michael@0 | 72 | |
| michael@0 | 73 | private: |
| michael@0 | 74 | nsRefPtr<mozilla::a11y::Accessible> mAccess; |
| michael@0 | 75 | Microsoft::WRL::ComPtr<IUnknown> mBridge; |
| michael@0 | 76 | }; |
| michael@0 | 77 | |
| michael@0 | 78 | } } } |
| michael@0 | 79 | |
| michael@0 | 80 | #endif // ACCESSIBILITY |
