Index: components/sessions/session_backend.h |
diff --git a/components/sessions/session_backend.h b/components/sessions/session_backend.h |
deleted file mode 100644 |
index 8679793ca6b54dc68db27d488b3f222ff95aa169..0000000000000000000000000000000000000000 |
--- a/components/sessions/session_backend.h |
+++ /dev/null |
@@ -1,145 +0,0 @@ |
-// Copyright 2011 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_SESSIONS_SESSION_BACKEND_H_ |
-#define COMPONENTS_SESSIONS_SESSION_BACKEND_H_ |
- |
-#include <vector> |
- |
-#include "base/memory/ref_counted.h" |
-#include "base/memory/scoped_ptr.h" |
-#include "base/task/cancelable_task_tracker.h" |
-#include "components/sessions/base_session_service.h" |
-#include "components/sessions/session_command.h" |
-#include "components/sessions/sessions_export.h" |
- |
-namespace base { |
-class File; |
-} |
- |
-namespace sessions { |
-// SessionBackend ------------------------------------------------------------- |
- |
-// SessionBackend is the backend used by BaseSessionService. It is responsible |
-// for maintaining two files: |
-// . The current file, which is the file commands passed to AppendCommands |
-// get written to. |
-// . The last file. When created the current file is moved to the last |
-// file. |
-// |
-// Each file contains an arbitrary set of commands supplied from |
-// BaseSessionService. A command consists of a unique id and a stream of bytes. |
-// SessionBackend does not use the id in anyway, that is used by |
-// BaseSessionService. |
-class SESSIONS_EXPORT SessionBackend |
- : public base::RefCountedThreadSafe<SessionBackend> { |
- public: |
- typedef sessions::SessionCommand::id_type id_type; |
- typedef sessions::SessionCommand::size_type size_type; |
- |
- // Initial size of the buffer used in reading the file. This is exposed |
- // for testing. |
- static const int kFileReadBufferSize; |
- |
- // Creates a SessionBackend. This method is invoked on the MAIN thread, |
- // and does no IO. The real work is done from Init, which is invoked on |
- // the file thread. |
- // |
- // |path_to_dir| gives the path the files are written two, and |type| |
- // indicates which service is using this backend. |type| is used to determine |
- // the name of the files to use as well as for logging. |
- SessionBackend(sessions::BaseSessionService::SessionType type, |
- const base::FilePath& path_to_dir); |
- |
- // Moves the current file to the last file, and recreates the current file. |
- // |
- // NOTE: this is invoked before every command, and does nothing if we've |
- // already Init'ed. |
- void Init(); |
- bool inited() const { return inited_; } |
- |
- // Appends the specified commands to the current file. If reset_first is |
- // true the the current file is recreated. |
- void AppendCommands(ScopedVector<sessions::SessionCommand> commands, |
- bool reset_first); |
- |
- // Invoked from the service to read the commands that make up the last |
- // session, invokes ReadLastSessionCommandsImpl to do the work. |
- void ReadLastSessionCommands( |
- const base::CancelableTaskTracker::IsCanceledCallback& is_canceled, |
- const sessions::BaseSessionService::GetCommandsCallback& callback); |
- |
- // Reads the commands from the last file. |
- // |
- // On success, the read commands are added to commands. |
- bool ReadLastSessionCommandsImpl( |
- ScopedVector<sessions::SessionCommand>* commands); |
- |
- // Deletes the file containing the commands for the last session. |
- void DeleteLastSession(); |
- |
- // Moves the current session to the last and resets the current. This is |
- // called during startup and if the user launchs the app and no tabbed |
- // browsers are running. |
- void MoveCurrentSessionToLastSession(); |
- |
- // Reads the commands from the current file. |
- // |
- // On success, the read commands are added to commands. It is up to the |
- // caller to delete the commands. |
- bool ReadCurrentSessionCommandsImpl( |
- ScopedVector<sessions::SessionCommand>* commands); |
- |
- private: |
- friend class base::RefCountedThreadSafe<SessionBackend>; |
- |
- ~SessionBackend(); |
- |
- // If current_session_file_ is open, it is truncated so that it is essentially |
- // empty (only contains the header). If current_session_file_ isn't open, it |
- // is is opened and the header is written to it. After this |
- // current_session_file_ contains no commands. |
- // NOTE: current_session_file_ may be NULL if the file couldn't be opened or |
- // the header couldn't be written. |
- void ResetFile(); |
- |
- // Opens the current file and writes the header. On success a handle to |
- // the file is returned. |
- base::File* OpenAndWriteHeader(const base::FilePath& path); |
- |
- // Appends the specified commands to the specified file. |
- bool AppendCommandsToFile( |
- base::File* file, |
- const ScopedVector<sessions::SessionCommand>& commands); |
- |
- const sessions::BaseSessionService::SessionType type_; |
- |
- // Returns the path to the last file. |
- base::FilePath GetLastSessionPath(); |
- |
- // Returns the path to the current file. |
- base::FilePath GetCurrentSessionPath(); |
- |
- // Directory files are relative to. |
- const base::FilePath path_to_dir_; |
- |
- // Whether the previous target file is valid. |
- bool last_session_valid_; |
- |
- // Handle to the target file. |
- scoped_ptr<base::File> current_session_file_; |
- |
- // Whether we've inited. Remember, the constructor is run on the |
- // Main thread, all others on the IO thread, hence lazy initialization. |
- bool inited_; |
- |
- // If true, the file is empty (no commands have been added to it). |
- bool empty_file_; |
- |
- DISALLOW_COPY_AND_ASSIGN(SessionBackend); |
-}; |
- |
-} // namespace sessions |
- |
-#endif // COMPONENTS_SESSIONS_SESSION_BACKEND_H_ |