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 | |
35 | namespace WebCore { |
36 | |
37 | class DeviceClient; |
38 | class Page; |
39 | |
40 | class DeviceController : public Supplement<Page> { |
41 | WTF_MAKE_FAST_ALLOCATED; |
42 | public: |
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 | |
58 | protected: |
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 | |