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
33namespace WebCore {
34
35DeviceController::DeviceController(DeviceClient& client)
36 : m_client(client)
37 , m_timer(*this, &DeviceController::fireDeviceEvent)
38{
39}
40
41void 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
56void 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
64void 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
72bool DeviceController::hasDeviceEventListener(DOMWindow& window) const
73{
74 return m_listeners.contains(&window);
75}
76
77void 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
86void 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