blob: 8a503e05206d7f1e03611b183e3398b87da25ecf (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
|
// Copyright 2014 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 CHROME_BROWSER_MEDIA_GALLERIES_MEDIA_FOLDER_FINDER_H_
#define CHROME_BROWSER_MEDIA_GALLERIES_MEDIA_FOLDER_FINDER_H_
#include <map>
#include <vector>
#include "base/callback.h"
#include "base/files/file_path.h"
#include "base/memory/ref_counted.h"
#include "base/memory/weak_ptr.h"
#include "base/sequenced_task_runner.h"
#include "chrome/browser/media_galleries/media_scan_types.h"
// MediaFolderFinder scans local hard drives and look for folders that contain
// media files.
class MediaFolderFinder {
public:
// Key: path to a folder
// Value: scan results for that folder, non-recursive.
typedef std::map<base::FilePath, MediaGalleryScanResult>
MediaFolderFinderResults;
// |results| never contains entries for |graylisted_folders_| or parent
// directories of |graylisted_folders_|.
typedef base::Callback<void(bool /*success*/,
const MediaFolderFinderResults& /*results*/)>
MediaFolderFinderResultsCallback;
// |callback| will get called when the scan finishes. If the object is deleted
// before it finishes, the scan will stop and |callback| will get called with
// success = false.
// MediaFolderFinder has a default set of per-platform paths to scan.
// Override in tests with SetRootsForTesting().
explicit MediaFolderFinder(const MediaFolderFinderResultsCallback& callback);
virtual ~MediaFolderFinder();
// Start the scan.
virtual void StartScan();
const std::vector<base::FilePath>& graylisted_folders() const;
private:
friend class MediaFolderFinderTest;
friend class MediaGalleriesPlatformAppBrowserTest;
class Worker;
struct WorkerReply {
WorkerReply();
~WorkerReply();
MediaGalleryScanResult scan_result;
std::vector<base::FilePath> new_folders;
};
enum ScanState {
SCAN_STATE_NOT_STARTED,
SCAN_STATE_STARTED,
SCAN_STATE_FINISHED,
};
void SetRootsForTesting(const std::vector<base::FilePath>& roots);
void OnInitialized(const std::vector<base::FilePath>& roots);
// Scan a folder from |folders_to_scan_|.
void ScanFolder();
// Callback that handles the |reply| from |worker_| for a scanned |path|.
void GotScanResults(const base::FilePath& path, const WorkerReply& reply);
const MediaFolderFinderResultsCallback results_callback_;
MediaFolderFinderResults results_;
std::vector<base::FilePath> graylisted_folders_;
std::vector<base::FilePath> folders_to_scan_;
ScanState scan_state_;
scoped_refptr<base::SequencedTaskRunner> worker_task_runner_;
// Owned by MediaFolderFinder, but lives on |worker_task_runner_|.
Worker* worker_;
// Set of roots to scan for testing.
bool has_roots_for_testing_;
std::vector<base::FilePath> roots_for_testing_;
base::WeakPtrFactory<MediaFolderFinder> weak_factory_;
DISALLOW_COPY_AND_ASSIGN(MediaFolderFinder);
};
#endif // CHROME_BROWSER_MEDIA_GALLERIES_MEDIA_FOLDER_FINDER_H_
|
