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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 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 #ifndef CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_PROVIDED_FILE_SYSTEM_OBSERV
ER_H_ | 5 #ifndef CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_PROVIDED_FILE_SYSTEM_OBSERV
ER_H_ |
6 #define CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_PROVIDED_FILE_SYSTEM_OBSERV
ER_H_ | 6 #define CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_PROVIDED_FILE_SYSTEM_OBSERV
ER_H_ |
7 | 7 |
8 #include <string> | 8 #include <string> |
9 #include <vector> | 9 #include <vector> |
10 | 10 |
11 #include "base/callback.h" | 11 #include "base/callback.h" |
12 #include "base/files/file_path.h" | 12 #include "base/files/file_path.h" |
| 13 #include "chrome/browser/chromeos/file_system_provider/observed_entry.h" |
13 | 14 |
14 namespace chromeos { | 15 namespace chromeos { |
15 namespace file_system_provider { | 16 namespace file_system_provider { |
16 | 17 |
17 class ProvidedFileSystemInfo; | 18 class ProvidedFileSystemInfo; |
18 class RequestManager; | 19 class RequestManager; |
19 | 20 |
20 // Observer class to be notified about changes happened to the provided file | 21 // Observer class to be notified about changes happened to the provided file |
21 // system, especially observed entries. | 22 // system, especially observed entries. |
22 class ProvidedFileSystemObserver { | 23 class ProvidedFileSystemObserver { |
23 public: | 24 public: |
24 struct ChildChange; | 25 struct ChildChange; |
25 | 26 |
26 // Type of a change to an observed entry. | 27 // Type of a change to an observed entry. |
27 enum ChangeType { CHANGED, DELETED }; | 28 enum ChangeType { CHANGED, DELETED }; |
28 | 29 |
29 // Lust of child changes. | 30 // Lust of child changes. |
30 typedef std::vector<ChildChange> ChildChanges; | 31 typedef std::vector<ChildChange> ChildChanges; |
31 | 32 |
32 // Represents an observed entry on the file system. | |
33 struct ObservedEntry { | |
34 ObservedEntry(); | |
35 ~ObservedEntry(); | |
36 | |
37 base::FilePath entry_path; | |
38 bool recursive; | |
39 std::string last_tag; | |
40 }; | |
41 | |
42 // Describes a change in an entry contained in an observed directory. | 33 // Describes a change in an entry contained in an observed directory. |
43 struct ChildChange { | 34 struct ChildChange { |
44 ChildChange(); | 35 ChildChange(); |
45 ~ChildChange(); | 36 ~ChildChange(); |
46 | 37 |
47 base::FilePath entry_path; | 38 base::FilePath entry_path; |
48 ChangeType change_type; | 39 ChangeType change_type; |
49 }; | 40 }; |
50 | 41 |
51 // Called when an observed entry is changed, including removals. |callback| | 42 // Called when an observed entry is changed, including removals. |callback| |
52 // *must* be called after the entry change is handled. Once all observers | 43 // *must* be called after the entry change is handled. Once all observers |
53 // call the callback, the tag will be updated and OnObservedEntryTagUpdated | 44 // call the callback, the tag will be updated and OnObservedEntryTagUpdated |
54 // called. The reference to |child_changes| is valid at least as long as | 45 // called. The reference to |child_changes| is valid at least as long as |
55 // |callback|. | 46 // |callback|. |
56 virtual void OnObservedEntryChanged( | 47 virtual void OnObservedEntryChanged( |
57 const ProvidedFileSystemInfo& file_system_info, | 48 const ProvidedFileSystemInfo& file_system_info, |
58 const base::FilePath& observed_path, | 49 const base::FilePath& observed_path, |
59 ChangeType change_type, | 50 ChangeType change_type, |
60 const ChildChanges& child_changes, | 51 const ChildChanges& child_changes, |
61 const base::Closure& callback) = 0; | 52 const base::Closure& callback) = 0; |
62 | 53 |
63 // Called when tag value is updated for the observed entry. | 54 // Called when tag value is updated for the observed entry. |
64 virtual void OnObservedEntryTagUpdated( | 55 virtual void OnObservedEntryTagUpdated( |
65 const ProvidedFileSystemInfo& file_system_info, | 56 const ProvidedFileSystemInfo& file_system_info, |
66 const base::FilePath& observed_path) = 0; | 57 const base::FilePath& observed_path, |
| 58 const std::string& tag) = 0; |
67 | 59 |
68 // Called when list of observed entries is changed. | 60 // Called when list of observed entries is changed. |
69 virtual void OnObservedEntryListChanged( | 61 virtual void OnObservedEntryListChanged( |
70 const ProvidedFileSystemInfo& file_system_info) = 0; | 62 const ProvidedFileSystemInfo& file_system_info, |
| 63 const ObservedEntries& observed_entries) = 0; |
71 }; | 64 }; |
72 | 65 |
73 } // namespace file_system_provider | 66 } // namespace file_system_provider |
74 } // namespace chromeos | 67 } // namespace chromeos |
75 | 68 |
76 #endif // CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_PROVIDED_FILE_SYSTEM_OBS
ERVER_H_ | 69 #endif // CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_PROVIDED_FILE_SYSTEM_OBS
ERVER_H_ |
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