| // Copyright 2015 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. |
| |
| #ifndef EXTENSIONS_BROWSER_API_USB_USB_EVENT_ROUTER_H_ |
| #define EXTENSIONS_BROWSER_API_USB_USB_EVENT_ROUTER_H_ |
| |
| #include "base/macros.h" |
| #include "content/public/browser/browser_thread.h" |
| #include "device/usb/usb_service.h" |
| #include "extensions/browser/browser_context_keyed_api_factory.h" |
| #include "extensions/browser/event_router.h" |
| |
| namespace device { |
| class UsbDevice; |
| } |
| |
| namespace extensions { |
| |
| // A BrowserContext-scoped object which is registered as an observer of the |
| // EventRouter and UsbService in order to generate device add/remove events. |
| class UsbEventRouter : public BrowserContextKeyedAPI, |
| public EventRouter::Observer, |
| public device::UsbService::Observer { |
| public: |
| // BrowserContextKeyedAPI implementation. |
| static BrowserContextKeyedAPIFactory<UsbEventRouter>* GetFactoryInstance(); |
| |
| private: |
| friend class BrowserContextKeyedAPIFactory<UsbEventRouter>; |
| |
| explicit UsbEventRouter(content::BrowserContext* context); |
| ~UsbEventRouter() override; |
| |
| // BrowserContextKeyedAPI implementation. |
| static const char* service_name() { return "UsbEventRouter"; } |
| static const bool kServiceIsNULLWhileTesting = true; |
| |
| // KeyedService implementation. |
| void Shutdown() override; |
| |
| // EventRouter::Observer implementation. |
| void OnListenerAdded(const EventListenerInfo& details) override; |
| |
| // UsbService::Observer implementation. |
| void OnDeviceAdded(scoped_refptr<device::UsbDevice> device) override; |
| void OnDeviceRemoved(scoped_refptr<device::UsbDevice> device) override; |
| |
| // Broadcasts a device add or remove event for the given device. |
| void DispatchEvent(const std::string& event_name, |
| scoped_refptr<device::UsbDevice> device); |
| |
| content::BrowserContext* const browser_context_; |
| |
| ScopedObserver<device::UsbService, device::UsbService::Observer> observer_; |
| |
| DISALLOW_COPY_AND_ASSIGN(UsbEventRouter); |
| }; |
| |
| template <> |
| void BrowserContextKeyedAPIFactory< |
| UsbEventRouter>::DeclareFactoryDependencies(); |
| |
| } // namespace extensions |
| |
| #endif // EXTENSIONS_BROWSER_API_USB_USB_EVENT_ROUTER_H_ |