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#include "Page.h"
33
34namespace WebCore {
35
36DeviceController::DeviceController(DeviceClient* client)
37    : m_client(client)
38    , m_timer(this, &DeviceController::fireDeviceEvent)
39{
40    ASSERT(m_client);
41}
42
43void DeviceController::addDeviceEventListener(DOMWindow* window)
44{
45    bool wasEmpty = m_listeners.isEmpty();
46    m_listeners.add(window);
47
48    if (hasLastData()) {
49        m_lastEventListeners.add(window);
50        if (!m_timer.isActive())
51            m_timer.startOneShot(0);
52    }
53
54    if (wasEmpty)
55        m_client->startUpdating();
56}
57
58void DeviceController::removeDeviceEventListener(DOMWindow* window)
59{
60    m_listeners.remove(window);
61    m_lastEventListeners.remove(window);
62    if (m_listeners.isEmpty())
63        m_client->stopUpdating();
64}
65
66void DeviceController::removeAllDeviceEventListeners(DOMWindow* window)
67{
68    m_listeners.removeAll(window);
69    m_lastEventListeners.removeAll(window);
70    if (m_listeners.isEmpty())
71        m_client->stopUpdating();
72}
73
74void DeviceController::dispatchDeviceEvent(PassRefPtr<Event> prpEvent)
75{
76    RefPtr<Event> event = prpEvent;
77    Vector<RefPtr<DOMWindow> > listenerVector;
78    copyToVector(m_listeners, listenerVector);
79    for (size_t i = 0; i < listenerVector.size(); ++i) {
80        if (listenerVector[i]->document()
81            && !listenerVector[i]->document()->activeDOMObjectsAreSuspended()
82            && !listenerVector[i]->document()->activeDOMObjectsAreStopped())
83        listenerVector[i]->dispatchEvent(event);
84    }
85}
86
87void DeviceController::fireDeviceEvent(Timer<DeviceController>* timer)
88{
89    ASSERT_UNUSED(timer, timer == &m_timer);
90    ASSERT(hasLastData());
91
92    m_timer.stop();
93    Vector<RefPtr<DOMWindow> > listenerVector;
94    copyToVector(m_lastEventListeners, listenerVector);
95    m_lastEventListeners.clear();
96    for (size_t i = 0; i < listenerVector.size(); ++i) {
97        if (listenerVector[i]->document()
98            && !listenerVector[i]->document()->activeDOMObjectsAreSuspended()
99            && !listenerVector[i]->document()->activeDOMObjectsAreStopped())
100        listenerVector[i]->dispatchEvent(getLastEvent());
101    }
102}
103
104} // namespace WebCore
105