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// Copyright (c) 2012 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_PERFORMANCE_MONITOR_EVENT_H_
#define CHROME_BROWSER_PERFORMANCE_MONITOR_EVENT_H_
#include "base/memory/scoped_ptr.h"
#include "base/time/time.h"
#include "base/values.h"
#include "chrome/browser/performance_monitor/event_type.h"
namespace performance_monitor {
const char* EventTypeToString(EventType event_type);
// The wrapper class for the JSON-generated event classes for the performance
// monitor. This class is used so we can pass around events in a single class,
// rather than having a variety of different types (since JSON does not
// currently support inheritance). Since the class will occasionally need to
// be compared against other events, we construct it with type and time. Other
// information should not be needed commonly, and is stored in a JSON-generated
// DictionaryValue.
class Event {
public:
Event(const EventType& type,
const base::Time& time,
scoped_ptr<base::DictionaryValue> data);
virtual ~Event();
// Construct an event from the given DictionaryValue; takes ownership of
// |data|.
static scoped_ptr<Event> FromValue(scoped_ptr<base::DictionaryValue> data);
// Accessors
EventType type() const { return type_; }
base::Time time() const { return time_; }
base::DictionaryValue* data() const { return data_.get(); }
private:
// The type of the event.
EventType type_;
// The time at which the event was recorded.
base::Time time_;
// The full JSON-generated value representing the information of the event;
// these data are described in chrome/browser/performance_monitor/events.json.
scoped_ptr<base::DictionaryValue> data_;
};
} // namespace performance_monitor
#endif // CHROME_BROWSER_PERFORMANCE_MONITOR_EVENT_H_
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