1/*
2 * Copyright (C) 2008 Apple Inc. All Rights Reserved.
3 * Copyright (C) 2013 Google Inc. 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 COMPUTER, INC. ``AS IS'' AND ANY
15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
17 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
21 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
22 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 *
26 */
27
28#include "config.h"
29#include "core/platform/LifecycleNotifier.h"
30
31namespace WebCore {
32
33LifecycleNotifier::LifecycleNotifier(LifecycleContext* context)
34    : m_context(context)
35    , m_inDestructor(false)
36    , m_iterating(IteratingNone)
37{
38}
39
40LifecycleNotifier::~LifecycleNotifier()
41{
42    m_inDestructor = true;
43    for (ObserverSet::iterator it = m_observers.begin(); it != m_observers.end(); it = m_observers.begin()) {
44        LifecycleObserver* observer = *it;
45        m_observers.remove(observer);
46        ASSERT(observer->lifecycleContext() == m_context);
47        observer->contextDestroyed();
48    }
49}
50
51void LifecycleNotifier::addObserver(LifecycleObserver* observer)
52{
53    RELEASE_ASSERT(!m_inDestructor);
54    m_observers.add(observer);
55}
56
57void LifecycleNotifier::removeObserver(LifecycleObserver* observer)
58{
59    RELEASE_ASSERT(!m_inDestructor);
60    m_observers.remove(observer);
61}
62
63LifecycleContext* LifecycleNotifier::context()
64{
65    return m_context;
66}
67
68} // namespace WebCore
69