Source/modules/quota/DOMWindowQuota.cpp

/*
 * Copyright (C) 2012 Google Inc. All rights reserved.
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 * modification, are permitted provided that the following conditions are
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 * in the documentation and/or other materials provided with the
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 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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#include "config.h"
#include "modules/quota/DOMWindowQuota.h"

#include "core/frame/LocalDOMWindow.h"
#include "core/frame/LocalFrame.h"
#include "modules/quota/DeprecatedStorageInfo.h"
#include "wtf/PassRefPtr.h"

namespace blink {

DOMWindowQuota::DOMWindowQuota(LocalDOMWindow& window)
    : DOMWindowProperty(window.frame())
{
}

DOMWindowQuota::~DOMWindowQuota()
{
}

const char* DOMWindowQuota::supplementName()
{
    return "DOMWindowQuota";
}

// static
DOMWindowQuota& DOMWindowQuota::from(LocalDOMWindow& window)
{
    DOMWindowQuota* supplement = static_cast<DOMWindowQuota*>(WillBeHeapSupplement<LocalDOMWindow>::from(window, supplementName()));
    if (!supplement) {
        supplement = new DOMWindowQuota(window);
        provideTo(window, supplementName(), adoptPtrWillBeNoop(supplement));
    }
    return *supplement;
}

// static
DeprecatedStorageInfo* DOMWindowQuota::webkitStorageInfo(LocalDOMWindow& window)
{
    return DOMWindowQuota::from(window).webkitStorageInfo();
}

DeprecatedStorageInfo* DOMWindowQuota::webkitStorageInfo() const
{
    if (!m_storageInfo && frame())
        m_storageInfo = DeprecatedStorageInfo::create();
    return m_storageInfo.get();
}

void DOMWindowQuota::trace(Visitor* visitor)
{
    visitor->trace(m_storageInfo);
    WillBeHeapSupplement<LocalDOMWindow>::trace(visitor);
}

} // namespace blink