Index: components/offline_pages/offline_event_logger.h |
diff --git a/components/offline_pages/offline_event_logger.h b/components/offline_pages/offline_event_logger.h |
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+++ b/components/offline_pages/offline_event_logger.h |
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+// 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. |
+ |
+#ifndef COMPONENTS_OFFLINE_PAGES_OFFLINE_EVENT_LOGGER_H_ |
+#define COMPONENTS_OFFLINE_PAGES_OFFLINE_EVENT_LOGGER_H_ |
+ |
+#include <deque> |
+#include <string> |
+#include <vector> |
+ |
+#include "base/macros.h" |
+ |
+namespace offline_pages { |
+ |
+// Maximum number of recorded Logs to keep track of at any moment. |
+static const size_t kMaxLogCount = 50; |
+ |
+// Facilitates the logging of events. Subclasses should create methods that |
+// call RecordActivity to write into the log. |SetIsLogging|, |GetLogs|, and |
+// |Clear| are called from the chrome://offline-internals page. |
+// |
+// Logging should be done by calling the corresponding subclass methods when |
+// a loggable event occurs (i.e. when status has changed for a save request |
+// or when an offlined page has been accessed/saved). |
+// |
+// This log only keeps track of the last |kMaxLogCount| events. |
+class OfflineEventLogger { |
+ public: |
+ OfflineEventLogger(); |
+ |
+ ~OfflineEventLogger(); |
+ |
+ // Clears the recorded activities. |
+ void Clear(); |
+ |
+ // Turns logging on/off. |
+ void SetIsLogging(bool is_logging); |
+ |
+ // Returns whether we are currently logging. |
+ bool GetIsLogging(); |
+ |
+ // Dumps the current activity list into |records|. |
+ void GetLogs(std::vector<std::string>* records); |
+ |
+ protected: |
+ // Write the activity into the cycling log if we are currently logging. |
+ void RecordActivity(const std::string& activity); |
+ |
+ private: |
+ // Recorded offline page activities. |
+ std::deque<std::string> activities_; |
+ |
+ // Whether we are currently recording logs or not. |
+ bool is_logging_; |
+}; |
+} // namespace offline_pages |
+ |
+#endif // COMPONENTS_OFFLINE_PAGES_OFFLINE_EVENT_LOGGER_H_ |