1/*
2 * Copyright (C) 2012 Google Inc. All Rights Reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 *    notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 *    notice, this list of conditions and the following disclaimer in the
11 *    documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include "config.h"
27#include "core/dom/IdTargetObserver.h"
28
29#include "core/dom/IdTargetObserverRegistry.h"
30
31namespace blink {
32
33IdTargetObserver::IdTargetObserver(IdTargetObserverRegistry& observerRegistry, const AtomicString& id)
34    : m_registry(&observerRegistry)
35    , m_id(id)
36{
37    registry().addObserver(m_id, this);
38}
39
40IdTargetObserver::~IdTargetObserver()
41{
42#if !ENABLE(OILPAN)
43    registry().removeObserver(m_id, this);
44#endif
45}
46
47void IdTargetObserver::trace(Visitor* visitor)
48{
49    visitor->trace(m_registry);
50}
51
52void IdTargetObserver::unregister()
53{
54#if ENABLE(OILPAN)
55    registry().removeObserver(m_id, this);
56#endif
57}
58
59} // namespace blink
60