The Tor Browser / file comparison
comparison: widget/windows/winrt/UIAAccessibilityBridge.h
widget/windows/winrt/UIAAccessibilityBridge.h
- branch
- TOR_BUG_9701
- changeset 10
- ac0c01689b40
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| -1:000000000000 | 0:46767cc555c9 |
|---|---|
| 1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 #pragma once | |
| 7 | |
| 8 #if defined(ACCESSIBILITY) | |
| 9 | |
| 10 #include "nsCOMPtr.h" | |
| 11 #include "nsIObserver.h" | |
| 12 #include "nsIObserverService.h" | |
| 13 #include "nsServiceManagerUtils.h" | |
| 14 #include "mozilla/a11y/Accessible.h" | |
| 15 | |
| 16 #include "mozwrlbase.h" | |
| 17 | |
| 18 namespace mozilla { | |
| 19 namespace widget { | |
| 20 namespace winrt { | |
| 21 | |
| 22 // Connects to our accessibility framework to receive | |
| 23 // events and query the dom. | |
| 24 class AccessibilityBridge : public nsIObserver | |
| 25 { | |
| 26 public: | |
| 27 NS_DECL_ISUPPORTS | |
| 28 NS_DECL_NSIOBSERVER | |
| 29 | |
| 30 AccessibilityBridge() {} | |
| 31 | |
| 32 ~AccessibilityBridge() { | |
| 33 Disconnect(); | |
| 34 } | |
| 35 | |
| 36 bool Init(IUnknown* aBridge, mozilla::a11y::Accessible* aPtr) { | |
| 37 mAccess = aPtr; | |
| 38 mBridge = aBridge; | |
| 39 return Connect(); | |
| 40 } | |
| 41 | |
| 42 bool Connect() { | |
| 43 nsresult rv; | |
| 44 | |
| 45 nsCOMPtr<nsIObserverService> observerService = | |
| 46 do_GetService("@mozilla.org/observer-service;1", &rv); | |
| 47 if (NS_FAILED(rv)) { | |
| 48 return false; | |
| 49 } | |
| 50 rv = observerService->AddObserver(this, "accessible-event", false); | |
| 51 if (NS_FAILED(rv)) { | |
| 52 return false; | |
| 53 } | |
| 54 return true; | |
| 55 } | |
| 56 | |
| 57 bool Connected() { | |
| 58 return mAccess ? true : false; | |
| 59 } | |
| 60 | |
| 61 void Disconnect() { | |
| 62 nsresult rv; | |
| 63 nsCOMPtr<nsIObserverService> observerService = | |
| 64 do_GetService("@mozilla.org/observer-service;1", &rv); | |
| 65 if (NS_FAILED(rv)) { | |
| 66 NS_WARNING("failed to get observersvc on shutdown."); | |
| 67 return; | |
| 68 } | |
| 69 observerService->RemoveObserver(this, "accessible-event"); | |
| 70 mAccess = nullptr; | |
| 71 } | |
| 72 | |
| 73 private: | |
| 74 nsRefPtr<mozilla::a11y::Accessible> mAccess; | |
| 75 Microsoft::WRL::ComPtr<IUnknown> mBridge; | |
| 76 }; | |
| 77 | |
| 78 } } } | |
| 79 | |
| 80 #endif // ACCESSIBILITY |
