chrome/browser/media_galleries/media_folder_finder.h - Issue 1695563002: Media Galleries Partial Deprecation: Remove scan functionality.

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Issue 1695563002: Media Galleries Partial Deprecation: Remove scan functionality. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master

Patch Set: Created 4 years, 9 months ago

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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

3 // found in the LICENSE file.

4

5 #ifndef CHROME_BROWSER_MEDIA_GALLERIES_MEDIA_FOLDER_FINDER_H_

6 #define CHROME_BROWSER_MEDIA_GALLERIES_MEDIA_FOLDER_FINDER_H_

7

8 #include <map>

9 #include <vector>

10

11 #include "base/callback.h"

12 #include "base/files/file_path.h"

13 #include "base/macros.h"

14 #include "base/memory/ref_counted.h"

15 #include "base/memory/weak_ptr.h"

16 #include "base/sequenced_task_runner.h"

17 #include "chrome/browser/media_galleries/media_scan_types.h"

18

19 // MediaFolderFinder scans local hard drives and look for folders that contain

20 // media files.

21 class MediaFolderFinder {

22 public:

23 // Key: path to a folder

24 // Value: scan results for that folder, non-recursive.

25 typedef std::map<base::FilePath, MediaGalleryScanResult>

26 MediaFolderFinderResults;

27

28 // \|results\| never contains entries for \|graylisted_folders_\| or parent

29 // directories of \|graylisted_folders_\|.

30 typedef base::Callback<void(bool /success/,

31 const MediaFolderFinderResults& /results/)>

32 MediaFolderFinderResultsCallback;

33

34 // \|callback\| will get called when the scan finishes. If the object is deleted

35 // before it finishes, the scan will stop and \|callback\| will get called with

36 // success = false.

37 // MediaFolderFinder has a default set of per-platform paths to scan.

38 // Override in tests with SetRootsForTesting().

39 explicit MediaFolderFinder(const MediaFolderFinderResultsCallback& callback);

40 virtual ~MediaFolderFinder();

41

42 // Start the scan.

43 virtual void StartScan();

44

45 const std::vector<base::FilePath>& graylisted_folders() const;

46

47 private:

48 friend class MediaFolderFinderTest;

49 friend class MediaGalleriesPlatformAppBrowserTest;

50

51 class Worker;

52 struct WorkerReply {

53 WorkerReply();

54 WorkerReply(const WorkerReply& other);

55 ~WorkerReply();

56

57 MediaGalleryScanResult scan_result;

58 std::vector<base::FilePath> new_folders;

59 };

60

61 enum ScanState {

62 SCAN_STATE_NOT_STARTED,

63 SCAN_STATE_STARTED,

64 SCAN_STATE_FINISHED,

65 };

66

67 void SetRootsForTesting(const std::vector<base::FilePath>& roots);

68

69 void OnInitialized(const std::vector<base::FilePath>& roots);

70

71 // Scan a folder from \|folders_to_scan_\|.

72 void ScanFolder();

73

74 // Callback that handles the \|reply\| from \|worker_\| for a scanned \|path\|.

75 void GotScanResults(const base::FilePath& path, const WorkerReply& reply);

76

77 const MediaFolderFinderResultsCallback results_callback_;

78 MediaFolderFinderResults results_;

79

80 std::vector<base::FilePath> graylisted_folders_;

81 std::vector<base::FilePath> folders_to_scan_;

82 ScanState scan_state_;

83

84 scoped_refptr<base::SequencedTaskRunner> worker_task_runner_;

85

86 // Owned by MediaFolderFinder, but lives on \|worker_task_runner_\|.

87 Worker* worker_;

88

89 // Set of roots to scan for testing.

90 bool has_roots_for_testing_;

91 std::vector<base::FilePath> roots_for_testing_;

92

93 base::WeakPtrFactory<MediaFolderFinder> weak_factory_;

94

95 DISALLOW_COPY_AND_ASSIGN(MediaFolderFinder);

96 };

97

98 #endif // CHROME_BROWSER_MEDIA_GALLERIES_MEDIA_FOLDER_FINDER_H_

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