Source/core/dom/DocumentLifecycleObserver.cpp

/*
 * 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 "config.h"
#include "core/dom/DocumentLifecycleObserver.h"

#include "core/dom/Document.h"

namespace WebCore {

DocumentLifecycleObserver::DocumentLifecycleObserver(Document* document)
    : ContextLifecycleObserver(document, DocumentLifecycleObserverType)
{
}

DocumentLifecycleObserver::~DocumentLifecycleObserver()
{
    observeContext(0, DocumentLifecycleObserverType);
}

DocumentLifecycleNotifier::DocumentLifecycleNotifier(ScriptExecutionContext* context)
    : ContextLifecycleNotifier(context)
{
}

void DocumentLifecycleNotifier::addObserver(LifecycleObserver* observer, LifecycleObserver::Type type)
{
    if (type == LifecycleObserver::DocumentLifecycleObserverType) {
        RELEASE_ASSERT(m_iterating != IteratingOverDocumentObservers);
        m_documentObservers.add(static_cast<DocumentLifecycleObserver*>(observer));
    }

    ContextLifecycleNotifier::addObserver(observer, type);
}

void DocumentLifecycleNotifier::removeObserver(LifecycleObserver* observer, LifecycleObserver::Type type)
{
    if (type == LifecycleObserver::DocumentLifecycleObserverType) {
        RELEASE_ASSERT(m_iterating != IteratingOverDocumentObservers);
        m_documentObservers.remove(static_cast<DocumentLifecycleObserver*>(observer));
    }

    ContextLifecycleNotifier::removeObserver(observer, type);
}

} // namespace WebCore