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Side by Side Diff: base/files/file_path_watcher.h

Issue 7461141: Rename BASE_API to BASE_EXPORT. (Closed) Base URL: svn://svn.chromium.org/chrome/trunk/src/
Patch Set: '' Created 9 years, 4 months ago
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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. 1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be 2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file. 3 // found in the LICENSE file.
4 4
5 // This module provides a way to monitor a file or directory for changes. 5 // This module provides a way to monitor a file or directory for changes.
6 6
7 #ifndef BASE_FILES_FILE_PATH_WATCHER_H_ 7 #ifndef BASE_FILES_FILE_PATH_WATCHER_H_
8 #define BASE_FILES_FILE_PATH_WATCHER_H_ 8 #define BASE_FILES_FILE_PATH_WATCHER_H_
9 #pragma once 9 #pragma once
10 10
11 #include "base/base_api.h" 11 #include "base/base_export.h"
12 #include "base/basictypes.h" 12 #include "base/basictypes.h"
13 #include "base/file_path.h" 13 #include "base/file_path.h"
14 #include "base/memory/ref_counted.h" 14 #include "base/memory/ref_counted.h"
15 #include "base/message_loop_proxy.h" 15 #include "base/message_loop_proxy.h"
16 16
17 namespace base { 17 namespace base {
18 namespace files { 18 namespace files {
19 19
20 // This class lets you register interest in changes on a FilePath. 20 // This class lets you register interest in changes on a FilePath.
21 // The delegate will get called whenever the file or directory referenced by the 21 // The delegate will get called whenever the file or directory referenced by the
22 // FilePath is changed, including created or deleted. Due to limitations in the 22 // FilePath is changed, including created or deleted. Due to limitations in the
23 // underlying OS APIs, FilePathWatcher has slightly different semantics on OS X 23 // underlying OS APIs, FilePathWatcher has slightly different semantics on OS X
24 // than on Windows or Linux. FilePathWatcher on Linux and Windows will detect 24 // than on Windows or Linux. FilePathWatcher on Linux and Windows will detect
25 // modifications to files in a watched directory. FilePathWatcher on Mac will 25 // modifications to files in a watched directory. FilePathWatcher on Mac will
26 // detect the creation and deletion of files in a watched directory, but will 26 // detect the creation and deletion of files in a watched directory, but will
27 // not detect modifications to those files. See file_path_watcher_mac.cc for 27 // not detect modifications to those files. See file_path_watcher_mac.cc for
28 // details. 28 // details.
29 class BASE_API FilePathWatcher { 29 class BASE_EXPORT FilePathWatcher {
30 public: 30 public:
31 // Declares the callback client code implements to receive notifications. Note 31 // Declares the callback client code implements to receive notifications. Note
32 // that implementations of this interface should not keep a reference to the 32 // that implementations of this interface should not keep a reference to the
33 // corresponding FileWatcher object to prevent a reference cycle. 33 // corresponding FileWatcher object to prevent a reference cycle.
34 class Delegate : public base::RefCountedThreadSafe<Delegate> { 34 class Delegate : public base::RefCountedThreadSafe<Delegate> {
35 public: 35 public:
36 virtual ~Delegate() {} 36 virtual ~Delegate() {}
37 virtual void OnFilePathChanged(const FilePath& path) = 0; 37 virtual void OnFilePathChanged(const FilePath& path) = 0;
38 // Called when platform specific code detected an error. The watcher will 38 // Called when platform specific code detected an error. The watcher will
39 // not call OnFilePathChanged for future changes. 39 // not call OnFilePathChanged for future changes.
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120 private: 120 private:
121 scoped_refptr<PlatformDelegate> impl_; 121 scoped_refptr<PlatformDelegate> impl_;
122 122
123 DISALLOW_COPY_AND_ASSIGN(FilePathWatcher); 123 DISALLOW_COPY_AND_ASSIGN(FilePathWatcher);
124 }; 124 };
125 125
126 } // namespace files 126 } // namespace files
127 } // namespace base 127 } // namespace base
128 128
129 #endif // BASE_FILES_FILE_PATH_WATCHER_H_ 129 #endif // BASE_FILES_FILE_PATH_WATCHER_H_
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