third_party/WebKit/Source/core/dom/IdTargetObserver.cpp

   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
  31 namespace blink {
  32
  33 IdTargetObserver::IdTargetObserver(IdTargetObserverRegistry& observerRegistry, const AtomicString& id)
  34     : m_registry(&observerRegistry)
  35     , m_id(id)
  36 {
  37     registry().addObserver(m_id, this);
  38 }
  39
  40 IdTargetObserver::~IdTargetObserver()
  41 {
  42 #if !ENABLE(OILPAN)
  43     registry().removeObserver(m_id, this);
  44 #endif
  45 }
  46
  47 DEFINE_TRACE(IdTargetObserver)
  48 {
  49     visitor->trace(m_registry);
  50 }
  51
  52 void IdTargetObserver::unregister()
  53 {
  54 #if ENABLE(OILPAN)
  55     registry().removeObserver(m_id, this);
  56 #endif
  57 }
  58
  59 } // namespace blink