1/* 2 * Copyright 2010, The Android Open Source Project 3 * Copyright (C) 2012 Samsung Electronics. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' 15 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 16 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS 18 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 19 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 20 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 21 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 22 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 23 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 24 * THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27#ifndef DeviceController_h 28#define DeviceController_h 29 30#include "DOMWindow.h" 31#include "Event.h" 32#include "Supplementable.h" 33#include "Timer.h" 34#include <wtf/HashCountedSet.h> 35 36namespace WebCore { 37 38class DeviceClient; 39class Page; 40 41class DeviceController : public Supplement<Page> { 42 WTF_MAKE_FAST_ALLOCATED; 43public: 44 explicit DeviceController(DeviceClient*); 45 ~DeviceController() { } 46 47 void addDeviceEventListener(DOMWindow*); 48 void removeDeviceEventListener(DOMWindow*); 49 void removeAllDeviceEventListeners(DOMWindow*); 50 51 void dispatchDeviceEvent(PassRefPtr<Event>); 52 bool isActive() { return !m_listeners.isEmpty(); } 53 DeviceClient* client() { return m_client; } 54 55 virtual bool hasLastData() { return false; } 56 virtual PassRefPtr<Event> getLastEvent() { return 0; } 57 58protected: 59 void fireDeviceEvent(Timer<DeviceController>&); 60 61 HashCountedSet<RefPtr<DOMWindow>> m_listeners; 62 HashCountedSet<RefPtr<DOMWindow>> m_lastEventListeners; 63 DeviceClient* m_client; 64 Timer<DeviceController> m_timer; 65}; 66 67} // namespace WebCore 68 69#endif // DeviceController_h 70