/*
 * Copyright (C) 2013 Google Inc. All Rights Reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */


#include "sky/engine/config.h"
#include "sky/engine/core/page/PageLifecycleNotifier.h"

namespace blink {

PageLifecycleNotifier::PageLifecycleNotifier(Page* context)
    : LifecycleNotifier<Page>(context)
{
}

void PageLifecycleNotifier::addObserver(PageLifecycleNotifier::Observer* observer)
{
    if (observer->observerType() == Observer::PageLifecycleObserverType) {
        RELEASE_ASSERT(m_iterating != IteratingOverPageObservers);
        m_pageObservers.add(static_cast<PageLifecycleObserver*>(observer));
    }

    LifecycleNotifier<Page>::addObserver(observer);
}

void PageLifecycleNotifier::removeObserver(PageLifecycleNotifier::Observer* observer)
{
    if (observer->observerType() == Observer::PageLifecycleObserverType) {
        RELEASE_ASSERT(m_iterating != IteratingOverPageObservers);
        m_pageObservers.remove(static_cast<PageLifecycleObserver*>(observer));
    }

    LifecycleNotifier<Page>::removeObserver(observer);
}

} // namespace blink