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 BASE_FILES_FILE_UTIL_PROXY_H_ 6 #define BASE_FILES_FILE_UTIL_PROXY_H_ 7 8 #include "base/base_export.h" 9 #include "base/callback_forward.h" 10 #include "base/files/file.h" 11 #include "base/files/file_path.h" 12 13 namespace base { 14 15 class TaskRunner; 16 class Time; 17 18 // This class provides asynchronous access to common file routines. 19 class BASE_EXPORT FileUtilProxy { 20 public: 21 // This callback is used by methods that report only an error code. It is 22 // valid to pass a null callback to any function that takes a StatusCallback, 23 // in which case the operation will complete silently. 24 typedef Callback<void(File::Error)> StatusCallback; 25 26 typedef Callback<void(File::Error, 27 const File::Info&)> GetFileInfoCallback; 28 29 // Retrieves the information about a file. It is invalid to pass a null 30 // callback. 31 // This returns false if task posting to |task_runner| has failed. 32 static bool GetFileInfo( 33 TaskRunner* task_runner, 34 const FilePath& file_path, 35 const GetFileInfoCallback& callback); 36 37 // Deletes a file or a directory. 38 // It is an error to delete a non-empty directory with recursive=false. 39 // This returns false if task posting to |task_runner| has failed. 40 static bool DeleteFile(TaskRunner* task_runner, 41 const FilePath& file_path, 42 bool recursive, 43 const StatusCallback& callback); 44 45 // Touches a file. The callback can be null. 46 // This returns false if task posting to |task_runner| has failed. 47 static bool Touch( 48 TaskRunner* task_runner, 49 const FilePath& file_path, 50 const Time& last_access_time, 51 const Time& last_modified_time, 52 const StatusCallback& callback); 53 54 private: 55 DISALLOW_IMPLICIT_CONSTRUCTORS(FileUtilProxy); 56 }; 57 58 } // namespace base 59 60 #endif // BASE_FILES_FILE_UTIL_PROXY_H_ 61
