1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef CHROME_BROWSER_PERFORMANCE_MONITOR_EVENT_H_ 6 #define CHROME_BROWSER_PERFORMANCE_MONITOR_EVENT_H_ 7 8 #include "base/memory/scoped_ptr.h" 9 #include "base/time/time.h" 10 #include "base/values.h" 11 12 #include "chrome/browser/performance_monitor/event_type.h" 13 14 namespace performance_monitor { 15 16 const char* EventTypeToString(EventType event_type); 17 18 // The wrapper class for the JSON-generated event classes for the performance 19 // monitor. This class is used so we can pass around events in a single class, 20 // rather than having a variety of different types (since JSON does not 21 // currently support inheritance). Since the class will occasionally need to 22 // be compared against other events, we construct it with type and time. Other 23 // information should not be needed commonly, and is stored in a JSON-generated 24 // DictionaryValue. 25 class Event { 26 public: 27 Event(const EventType& type, 28 const base::Time& time, 29 scoped_ptr<base::DictionaryValue> data); 30 virtual ~Event(); 31 32 // Construct an event from the given DictionaryValue; takes ownership of 33 // |data|. 34 static scoped_ptr<Event> FromValue(scoped_ptr<base::DictionaryValue> data); 35 36 // Accessors type()37 EventType type() const { return type_; } time()38 base::Time time() const { return time_; } data()39 base::DictionaryValue* data() const { return data_.get(); } 40 41 private: 42 43 // The type of the event. 44 EventType type_; 45 // The time at which the event was recorded. 46 base::Time time_; 47 // The full JSON-generated value representing the information of the event; 48 // these data are described in chrome/browser/performance_monitor/events.json. 49 scoped_ptr<base::DictionaryValue> data_; 50 }; 51 52 } // namespace performance_monitor 53 54 #endif // CHROME_BROWSER_PERFORMANCE_MONITOR_EVENT_H_ 55