1 // Copyright 2013 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef CHROME_BROWSER_EXTENSIONS_API_BRAILLE_DISPLAY_PRIVATE_BRAILLE_DISPLAY_PRIVATE_API_H_ 6 #define CHROME_BROWSER_EXTENSIONS_API_BRAILLE_DISPLAY_PRIVATE_BRAILLE_DISPLAY_PRIVATE_API_H_ 7 8 #include "base/scoped_observer.h" 9 #include "chrome/browser/extensions/api/braille_display_private/braille_controller.h" 10 #include "chrome/common/extensions/api/braille_display_private.h" 11 #include "extensions/browser/api/async_api_function.h" 12 #include "extensions/browser/browser_context_keyed_api_factory.h" 13 #include "extensions/browser/event_router.h" 14 15 class Profile; 16 17 namespace extensions { 18 namespace api { 19 namespace braille_display_private { 20 class BrailleDisplayPrivateAPIUserTest; 21 } // namespace braille_display_private 22 } // namespace api 23 24 // Implementation of the chrome.brailleDisplayPrivate API. 25 class BrailleDisplayPrivateAPI : public BrowserContextKeyedAPI, 26 api::braille_display_private::BrailleObserver, 27 EventRouter::Observer { 28 public: 29 explicit BrailleDisplayPrivateAPI(content::BrowserContext* context); 30 virtual ~BrailleDisplayPrivateAPI(); 31 32 // ProfileKeyedService implementation. 33 virtual void Shutdown() OVERRIDE; 34 35 // BrowserContextKeyedAPI implementation. 36 static BrowserContextKeyedAPIFactory<BrailleDisplayPrivateAPI>* 37 GetFactoryInstance(); 38 39 // BrailleObserver implementation. 40 virtual void OnBrailleDisplayStateChanged( 41 const api::braille_display_private::DisplayState& display_state) OVERRIDE; 42 virtual void OnBrailleKeyEvent( 43 const api::braille_display_private::KeyEvent& keyEvent) OVERRIDE; 44 45 // EventRouter::Observer implementation. 46 virtual void OnListenerAdded(const EventListenerInfo& details) OVERRIDE; 47 virtual void OnListenerRemoved(const EventListenerInfo& details) OVERRIDE; 48 49 50 private: 51 friend class BrowserContextKeyedAPIFactory<BrailleDisplayPrivateAPI>; 52 friend class api::braille_display_private::BrailleDisplayPrivateAPIUserTest; 53 54 class EventDelegate { 55 public: ~EventDelegate()56 virtual ~EventDelegate() {} 57 virtual void BroadcastEvent(scoped_ptr<Event> event) = 0; 58 virtual bool HasListener() = 0; 59 }; 60 61 class DefaultEventDelegate; 62 63 // Returns whether the profile that this API was created for is currently 64 // the active profile. 65 bool IsProfileActive(); 66 67 void SetEventDelegateForTest(scoped_ptr<EventDelegate> delegate); 68 69 Profile* profile_; 70 ScopedObserver<api::braille_display_private::BrailleController, 71 BrailleObserver> scoped_observer_; 72 scoped_ptr<EventDelegate> event_delegate_; 73 74 // BrowserContextKeyedAPI implementation. service_name()75 static const char* service_name() { 76 return "BrailleDisplayPrivateAPI"; 77 } 78 // Override the default so the service is not created in tests. 79 static const bool kServiceIsNULLWhileTesting = true; 80 }; 81 82 namespace api { 83 84 class BrailleDisplayPrivateGetDisplayStateFunction : public AsyncApiFunction { 85 DECLARE_EXTENSION_FUNCTION("brailleDisplayPrivate.getDisplayState", 86 BRAILLEDISPLAYPRIVATE_GETDISPLAYSTATE) 87 protected: ~BrailleDisplayPrivateGetDisplayStateFunction()88 virtual ~BrailleDisplayPrivateGetDisplayStateFunction() {} 89 virtual bool Prepare() OVERRIDE; 90 virtual void Work() OVERRIDE; 91 virtual bool Respond() OVERRIDE; 92 }; 93 94 class BrailleDisplayPrivateWriteDotsFunction : public AsyncApiFunction { 95 DECLARE_EXTENSION_FUNCTION("brailleDisplayPrivate.writeDots", 96 BRAILLEDISPLAYPRIVATE_WRITEDOTS); 97 public: 98 BrailleDisplayPrivateWriteDotsFunction(); 99 100 protected: 101 virtual ~BrailleDisplayPrivateWriteDotsFunction(); 102 virtual bool Prepare() OVERRIDE; 103 virtual void Work() OVERRIDE; 104 virtual bool Respond() OVERRIDE; 105 106 private: 107 scoped_ptr<braille_display_private::WriteDots::Params> params_; 108 }; 109 110 } // namespace api 111 } // namespace extensions 112 113 #endif // CHROME_BROWSER_EXTENSIONS_API_BRAILLE_DISPLAY_PRIVATE_BRAILLE_DISPLAY_PRIVATE_API_H_ 114