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// Copyright (c) 2013 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.
#ifndef CHROME_BROWSER_METRICS_VARIATIONS_VARIATIONS_REQUEST_SCHEDULER_H_
#define CHROME_BROWSER_METRICS_VARIATIONS_VARIATIONS_REQUEST_SCHEDULER_H_
#include "base/bind.h"
#include "base/timer.h"
class PrefService;
namespace chrome_variations {
// A helper class that makes VariationsService requests at the correct times.
class VariationsRequestScheduler {
public:
virtual ~VariationsRequestScheduler();
// Starts the task on a schedule.
virtual void Start();
// Resets the scheduler if it is currently on a timer.
virtual void Reset();
// Factory method for this class.
static VariationsRequestScheduler* Create(const base::Closure& task,
PrefService* local_state);
protected:
// |task| is the closure to call when the scheduler deems ready.
explicit VariationsRequestScheduler(const base::Closure& task);
// Getter for derived classes.
base::Closure task() const;
private:
// The task scheduled by this class.
base::Closure task_;
// The timer used to repeatedly ping the server. Keep this as an instance
// member so if VariationsRequestScheduler goes out of scope, the timer is
// automatically canceled.
base::RepeatingTimer<VariationsRequestScheduler> timer_;
DISALLOW_COPY_AND_ASSIGN(VariationsRequestScheduler);
};
} // namespace chrome_variations
#endif // CHROME_BROWSER_METRICS_VARIATIONS_VARIATIONS_REQUEST_SCHEDULER_H_
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