// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "modules/budget/NavigatorBudget.h"

#include "core/frame/Navigator.h"
#include "modules/budget/Budget.h"

namespace blink {

NavigatorBudget::NavigatorBudget()
{
}

// static
const char* NavigatorBudget::supplementName()
{
    return "NavigatorBudget";
}

// static
NavigatorBudget& NavigatorBudget::from(Navigator& navigator)
{
    // Get the unique NavigatorBudget associated with this navigator.
    NavigatorBudget* navigatorBudget = static_cast<NavigatorBudget*>(Supplement<Navigator>::from(navigator, supplementName()));
    if (!navigatorBudget) {
        // If there isn't one already, create it now and associate it.
        navigatorBudget = new NavigatorBudget();
        Supplement<Navigator>::provideTo(navigator, supplementName(), navigatorBudget);
    }
    return *navigatorBudget;
}

Budget* NavigatorBudget::budget()
{
    if (!m_budget)
        m_budget = Budget::create();
    return m_budget.get();
}

// static
Budget* NavigatorBudget::budget(Navigator& navigator)
{
    return NavigatorBudget::from(navigator).budget();
}

DEFINE_TRACE(NavigatorBudget)
{
    visitor->trace(m_budget);
    Supplement<Navigator>::trace(visitor);
}

} // namespace blink