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#pragma once
28
29#include "DOMWindow.h"
30#include "Event.h"
31#include "Supplementable.h"
32#include "Timer.h"
33#include <wtf/HashCountedSet.h>
34
35namespace WebCore {
36
37class DeviceClient;
38class Page;
39
40class DeviceController : public Supplement<Page> {
41 WTF_MAKE_FAST_ALLOCATED;
42public:
43 explicit DeviceController(DeviceClient&);
44 virtual ~DeviceController() = default;
45
46 void addDeviceEventListener(DOMWindow&);
47 void removeDeviceEventListener(DOMWindow&);
48 void removeAllDeviceEventListeners(DOMWindow&);
49 bool hasDeviceEventListener(DOMWindow&) const;
50
51 void dispatchDeviceEvent(Event&);
52 bool isActive() { return !m_listeners.isEmpty(); }
53 DeviceClient& client() { return m_client; }
54
55 virtual bool hasLastData() { return false; }
56 virtual RefPtr<Event> getLastEvent() { return nullptr; }
57
58protected:
59 void fireDeviceEvent();
60
61 HashCountedSet<RefPtr<DOMWindow>> m_listeners;
62 HashCountedSet<RefPtr<DOMWindow>> m_lastEventListeners;
63 DeviceClient& m_client;
64 Timer m_timer;
65};
66
67} // namespace WebCore
68