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| 1 // Copyright 2013 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_FILEAPI_PICASA_PICASA_DATA_PROVIDER_H_ | |
| 6 #define CHROME_BROWSER_MEDIA_GALLERIES_FILEAPI_PICASA_PICASA_DATA_PROVIDER_H_ | |
| 7 | |
| 8 #include <map> | |
| 9 #include <queue> | |
| 10 #include <string> | |
| 11 #include <vector> | |
| 12 | |
| 13 #include "base/basictypes.h" | |
| 14 #include "base/callback_forward.h" | |
| 15 #include "base/files/file_path.h" | |
| 16 #include "base/files/file_path_watcher.h" | |
| 17 #include "base/memory/ref_counted.h" | |
| 18 #include "base/memory/scoped_ptr.h" | |
| 19 #include "base/memory/weak_ptr.h" | |
| 20 #include "base/time/time.h" | |
| 21 #include "chrome/common/media_galleries/picasa_types.h" | |
| 22 | |
| 23 namespace picasa { | |
| 24 | |
| 25 class SafePicasaAlbumTableReader; | |
| 26 class SafePicasaAlbumsIndexer; | |
| 27 | |
| 28 // Created and owned by ImportedMediaGalleryRegistryTaskRunnerValues | |
| 29 class PicasaDataProvider { | |
| 30 public: | |
| 31 typedef base::Callback<void(bool)> ReadyCallback; | |
| 32 | |
| 33 enum DataType { | |
| 34 LIST_OF_ALBUMS_AND_FOLDERS_DATA, | |
| 35 ALBUMS_IMAGES_DATA | |
| 36 }; | |
| 37 | |
| 38 explicit PicasaDataProvider(const base::FilePath& database_path); | |
| 39 virtual ~PicasaDataProvider(); | |
| 40 | |
| 41 // Ask the data provider to refresh the data if necessary. |ready_callback| | |
| 42 // will be called when the data is up to date. | |
| 43 void RefreshData(DataType needed_data, const ReadyCallback& ready_callback); | |
| 44 | |
| 45 // These methods return scoped_ptrs because we want to return a copy that | |
| 46 // will not change to the caller. | |
| 47 scoped_ptr<AlbumMap> GetAlbums(); | |
| 48 scoped_ptr<AlbumMap> GetFolders(); | |
| 49 // |error| must be non-NULL. | |
| 50 scoped_ptr<AlbumImages> FindAlbumImages(const std::string& key, | |
| 51 base::PlatformFileError* error); | |
| 52 | |
| 53 protected: | |
| 54 // Notifies data provider that any currently cached data is stale. | |
| 55 virtual void InvalidateData(); | |
| 56 | |
| 57 private: | |
| 58 enum State { | |
| 59 STALE_DATA_STATE, | |
| 60 INVALID_DATA_STATE, | |
| 61 LIST_OF_ALBUMS_AND_FOLDERS_FRESH_STATE, | |
| 62 ALBUMS_IMAGES_FRESH_STATE | |
| 63 }; | |
| 64 | |
| 65 friend class PicasaFileUtilTest; | |
| 66 friend class TestPicasaDataProvider; | |
| 67 | |
| 68 // Called when the FilePathWatcher for Picasa's temp directory has started. | |
| 69 void OnTempDirWatchStarted( | |
| 70 scoped_ptr<base::FilePathWatcher> temp_dir_watcher); | |
| 71 | |
| 72 // Called when Picasa's temp directory has changed. Virtual for testing. | |
| 73 virtual void OnTempDirChanged(const base::FilePath& temp_dir_path, | |
| 74 bool error); | |
| 75 | |
| 76 // Kicks off utility processes needed to fulfill any pending callbacks. | |
| 77 void DoRefreshIfNecessary(); | |
| 78 | |
| 79 void OnAlbumTableReaderDone(scoped_refptr<SafePicasaAlbumTableReader> reader, | |
| 80 bool parse_success, | |
| 81 const std::vector<AlbumInfo>& albums, | |
| 82 const std::vector<AlbumInfo>& folder); | |
| 83 | |
| 84 void OnAlbumsIndexerDone(scoped_refptr<SafePicasaAlbumsIndexer> indexer, | |
| 85 bool success, | |
| 86 const picasa::AlbumImagesMap& albums_images); | |
| 87 | |
| 88 static std::string DateToPathString(const base::Time& time); | |
| 89 static void UniquifyNames(const std::vector<AlbumInfo>& info_list, | |
| 90 AlbumMap* result_map); | |
| 91 | |
| 92 AlbumMap album_map_; | |
| 93 AlbumMap folder_map_; | |
| 94 AlbumImagesMap albums_images_; | |
| 95 | |
| 96 base::FilePath database_path_; | |
| 97 | |
| 98 State state_; | |
| 99 | |
| 100 // Callbacks that are waiting for their requested data to be ready. | |
| 101 std::queue<ReadyCallback> album_list_ready_callbacks_; | |
| 102 std::queue<ReadyCallback> albums_index_ready_callbacks_; | |
| 103 | |
| 104 // Stores the "live" in-flight utility processes. Callbacks from other | |
| 105 // (older) utility processes are stale and ignored. Only one of these at a | |
| 106 // time should be non-NULL. | |
| 107 scoped_refptr<SafePicasaAlbumTableReader> album_table_reader_; | |
| 108 scoped_refptr<SafePicasaAlbumsIndexer> albums_indexer_; | |
| 109 | |
| 110 // We watch the temp dir, as we can't detect database file modifications on | |
| 111 // Mac, but we are able to detect creation and deletion of temporary files. | |
| 112 scoped_ptr<base::FilePathWatcher> temp_dir_watcher_; | |
| 113 | |
| 114 base::WeakPtrFactory<PicasaDataProvider> weak_factory_; | |
| 115 | |
| 116 DISALLOW_COPY_AND_ASSIGN(PicasaDataProvider); | |
| 117 }; | |
| 118 | |
| 119 } // namespace picasa | |
| 120 | |
| 121 #endif // CHROME_BROWSER_MEDIA_GALLERIES_FILEAPI_PICASA_PICASA_DATA_PROVIDER_H_ | |
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Chromium Code Reviews
Issue 23717027:
Media Galleries API Picasa: Move Picasa source files to correct location. (Closed)
Base URL: svn://svn.chromium.org/chrome/trunk/src