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 | #include "config.h" |
28 | #include "DeviceController.h" |
29 | |
30 | #include "DeviceClient.h" |
31 | #include "Document.h" |
32 | |
33 | namespace WebCore { |
34 | |
35 | DeviceController::DeviceController(DeviceClient& client) |
36 | : m_client(client) |
37 | , m_timer(*this, &DeviceController::fireDeviceEvent) |
38 | { |
39 | } |
40 | |
41 | void DeviceController::addDeviceEventListener(DOMWindow& window) |
42 | { |
43 | bool wasEmpty = m_listeners.isEmpty(); |
44 | m_listeners.add(&window); |
45 | |
46 | if (hasLastData()) { |
47 | m_lastEventListeners.add(&window); |
48 | if (!m_timer.isActive()) |
49 | m_timer.startOneShot(0_s); |
50 | } |
51 | |
52 | if (wasEmpty) |
53 | m_client.startUpdating(); |
54 | } |
55 | |
56 | void DeviceController::removeDeviceEventListener(DOMWindow& window) |
57 | { |
58 | m_listeners.remove(&window); |
59 | m_lastEventListeners.remove(&window); |
60 | if (m_listeners.isEmpty()) |
61 | m_client.stopUpdating(); |
62 | } |
63 | |
64 | void DeviceController::removeAllDeviceEventListeners(DOMWindow& window) |
65 | { |
66 | m_listeners.removeAll(&window); |
67 | m_lastEventListeners.removeAll(&window); |
68 | if (m_listeners.isEmpty()) |
69 | m_client.stopUpdating(); |
70 | } |
71 | |
72 | bool DeviceController::hasDeviceEventListener(DOMWindow& window) const |
73 | { |
74 | return m_listeners.contains(&window); |
75 | } |
76 | |
77 | void DeviceController::dispatchDeviceEvent(Event& event) |
78 | { |
79 | for (auto& listener : copyToVector(m_listeners.values())) { |
80 | auto document = listener->document(); |
81 | if (document && !document->activeDOMObjectsAreSuspended() && !document->activeDOMObjectsAreStopped()) |
82 | listener->dispatchEvent(event); |
83 | } |
84 | } |
85 | |
86 | void DeviceController::fireDeviceEvent() |
87 | { |
88 | ASSERT(hasLastData()); |
89 | |
90 | m_timer.stop(); |
91 | auto listenerVector = copyToVector(m_lastEventListeners.values()); |
92 | m_lastEventListeners.clear(); |
93 | for (auto& listener : listenerVector) { |
94 | auto document = listener->document(); |
95 | if (document && !document->activeDOMObjectsAreSuspended() && !document->activeDOMObjectsAreStopped()) { |
96 | if (auto lastEvent = getLastEvent()) |
97 | listener->dispatchEvent(*lastEvent); |
98 | } |
99 | } |
100 | } |
101 | |
102 | } // namespace WebCore |
103 | |