| // Copyright 2013 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "chrome/browser/extensions/api/braille_display_private/braille_controller.h" |
| |
| #include "base/memory/scoped_ptr.h" |
| #include "base/memory/singleton.h" |
| #include "chrome/common/extensions/api/braille_display_private.h" |
| |
| namespace extensions { |
| namespace api { |
| namespace braille_display_private { |
| |
| // Stub implementation of BrailleController for use when brlapi is not |
| // enabled. |
| class BrailleControllerImpl : public BrailleController { |
| public: |
| static BrailleControllerImpl* GetInstance(); |
| virtual scoped_ptr<DisplayState> GetDisplayState() OVERRIDE; |
| virtual void WriteDots(const std::string& cells) OVERRIDE; |
| virtual void AddObserver(BrailleObserver* observer) OVERRIDE; |
| virtual void RemoveObserver(BrailleObserver* observer) OVERRIDE; |
| |
| private: |
| BrailleControllerImpl(); |
| virtual ~BrailleControllerImpl(); |
| friend struct DefaultSingletonTraits<BrailleControllerImpl>; |
| DISALLOW_COPY_AND_ASSIGN(BrailleControllerImpl); |
| }; |
| |
| BrailleController::BrailleController() { |
| } |
| |
| BrailleController::~BrailleController() { |
| } |
| |
| // static |
| BrailleController* BrailleController::GetInstance() { |
| return BrailleControllerImpl::GetInstance(); |
| } |
| |
| BrailleControllerImpl::BrailleControllerImpl() { |
| } |
| |
| BrailleControllerImpl::~BrailleControllerImpl() { |
| } |
| |
| // static |
| BrailleControllerImpl* BrailleControllerImpl::GetInstance() { |
| return Singleton<BrailleControllerImpl, |
| LeakySingletonTraits<BrailleControllerImpl> >::get(); |
| } |
| |
| scoped_ptr<DisplayState> BrailleControllerImpl::GetDisplayState() { |
| return scoped_ptr<DisplayState>(new DisplayState()).Pass(); |
| } |
| |
| void BrailleControllerImpl::WriteDots(const std::string& cells) { |
| } |
| |
| void BrailleControllerImpl::AddObserver(BrailleObserver* observer) { |
| } |
| |
| void BrailleControllerImpl::RemoveObserver(BrailleObserver* observer) { |
| } |
| |
| } // namespace braille_display_private |
| } // namespace api |
| } // namespace extensions |