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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_SCAN_MANAGER_H_ | |
| 6 #define CHROME_BROWSER_MEDIA_GALLERIES_MEDIA_SCAN_MANAGER_H_ | |
| 7 | |
| 8 #include <map> | |
| 9 #include <set> | |
| 10 #include <string> | |
| 11 | |
| 12 #include "base/compiler_specific.h" | |
| 13 #include "base/macros.h" | |
| 14 #include "base/memory/scoped_ptr.h" | |
| 15 #include "base/memory/weak_ptr.h" | |
| 16 #include "base/scoped_observer.h" | |
| 17 #include "base/time/time.h" | |
| 18 #include "chrome/browser/media_galleries/media_folder_finder.h" | |
| 19 #include "chrome/browser/media_galleries/media_scan_types.h" | |
| 20 #include "extensions/browser/extension_registry_observer.h" | |
| 21 | |
| 22 class MediaScanManagerObserver; | |
| 23 class Profile; | |
| 24 | |
| 25 namespace extensions { | |
| 26 class Extension; | |
| 27 class ExtensionRegistry; | |
| 28 } | |
| 29 | |
| 30 // The MediaScanManager is owned by MediaFileSystemRegistry, which is global. | |
| 31 // This class manages multiple 'virtual' media scans, up to one per extension | |
| 32 // per profile, and also manages the one physical scan backing them. | |
| 33 // This class lives and is called on the UI thread. | |
| 34 class MediaScanManager : public extensions::ExtensionRegistryObserver { | |
| 35 public: | |
| 36 MediaScanManager(); | |
| 37 ~MediaScanManager() override; | |
| 38 | |
| 39 // There can only be ever one observer registered per profile. Does not take | |
| 40 // ownership of |observer|. An observer must be registered before scanning. | |
| 41 void AddObserver(Profile* profile, MediaScanManagerObserver* observer); | |
| 42 void RemoveObserver(Profile* profile); | |
| 43 | |
| 44 // Must be called when |profile| is shut down. | |
| 45 void CancelScansForProfile(Profile* profile); | |
| 46 | |
| 47 // The results of the scan are reported to the registered | |
| 48 // MediaScanManagerObserver via OnScanFinished. There must be an observer | |
| 49 // registered for |profile| before the scan starts. | |
| 50 void StartScan(Profile* profile, const extensions::Extension* extension, | |
| 51 bool user_gesture); | |
| 52 void CancelScan(Profile* profile, const extensions::Extension* extension); | |
| 53 | |
| 54 protected: | |
| 55 friend class MediaGalleriesPlatformAppBrowserTest; | |
| 56 friend class MediaScanManagerTest; | |
| 57 | |
| 58 typedef base::Callback<MediaFolderFinder*( | |
| 59 const MediaFolderFinder::MediaFolderFinderResultsCallback&)> | |
| 60 MediaFolderFinderFactory; | |
| 61 | |
| 62 void SetMediaFolderFinderFactory(const MediaFolderFinderFactory& factory); | |
| 63 | |
| 64 // Here so that friend MediaScanManagerTest can access it. | |
| 65 static MediaFolderFinder::MediaFolderFinderResults FindContainerScanResults( | |
| 66 const MediaFolderFinder::MediaFolderFinderResults& found_folders, | |
| 67 const std::vector<base::FilePath>& sensitive_locations); | |
| 68 | |
| 69 private: | |
| 70 struct ScanObservers { | |
| 71 ScanObservers(); | |
| 72 ~ScanObservers(); | |
| 73 MediaScanManagerObserver* observer; | |
| 74 std::set<std::string /*extension id*/> scanning_extensions; | |
| 75 }; | |
| 76 typedef std::map<Profile*, ScanObservers> ScanObserverMap; | |
| 77 | |
| 78 // extensions::ExtensionRegistryObserver implementation. | |
| 79 void OnExtensionUnloaded( | |
| 80 content::BrowserContext* browser_context, | |
| 81 const extensions::Extension* extension, | |
| 82 extensions::UnloadedExtensionInfo::Reason reason) override; | |
| 83 | |
| 84 bool ScanInProgress() const; | |
| 85 | |
| 86 void OnScanCompleted( | |
| 87 bool success, | |
| 88 const MediaFolderFinder::MediaFolderFinderResults& found_folders); | |
| 89 | |
| 90 void OnFoundContainerDirectories( | |
| 91 const MediaFolderFinder::MediaFolderFinderResults& found_folders, | |
| 92 const MediaFolderFinder::MediaFolderFinderResults& container_folders); | |
| 93 | |
| 94 scoped_ptr<MediaFolderFinder> folder_finder_; | |
| 95 | |
| 96 base::Time scan_start_time_; | |
| 97 | |
| 98 // If not NULL, used to create |folder_finder_|. Used for testing. | |
| 99 MediaFolderFinderFactory testing_folder_finder_factory_; | |
| 100 | |
| 101 // Set of extensions (on all profiles) that have an in-progress scan. | |
| 102 ScanObserverMap observers_; | |
| 103 | |
| 104 ScopedObserver<extensions::ExtensionRegistry, | |
| 105 extensions::ExtensionRegistryObserver> | |
| 106 scoped_extension_registry_observer_; | |
| 107 | |
| 108 base::WeakPtrFactory<MediaScanManager> weak_factory_; | |
| 109 | |
| 110 DISALLOW_COPY_AND_ASSIGN(MediaScanManager); | |
| 111 }; | |
| 112 | |
| 113 #endif // CHROME_BROWSER_MEDIA_GALLERIES_MEDIA_SCAN_MANAGER_H_ | |
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Chromium Code Reviews
Issue 1695563002:
Media Galleries Partial Deprecation: Remove scan functionality. (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master