| // Copyright 2013 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_FILEAPI_PICASA_DATA_PROVIDER_H_ |
| #define CHROME_BROWSER_MEDIA_GALLERIES_FILEAPI_PICASA_DATA_PROVIDER_H_ |
| |
| #include <map> |
| #include <string> |
| #include <vector> |
| |
| #include "base/basictypes.h" |
| #include "base/callback_forward.h" |
| #include "base/files/file_path.h" |
| #include "base/files/file_path_watcher.h" |
| #include "base/memory/ref_counted.h" |
| #include "base/memory/scoped_ptr.h" |
| #include "base/memory/weak_ptr.h" |
| #include "base/time/time.h" |
| #include "chrome/common/media_galleries/picasa_types.h" |
| |
| namespace picasa { |
| |
| class SafePicasaAlbumTableReader; |
| class SafePicasaAlbumsIndexer; |
| |
| // Created and owned by ImportedMediaGalleryRegistryTaskRunnerValues |
| class PicasaDataProvider { |
| public: |
| typedef base::Callback<void(bool)> ReadyCallback; |
| |
| enum DataType { |
| LIST_OF_ALBUMS_AND_FOLDERS_DATA, |
| ALBUMS_IMAGES_DATA |
| }; |
| |
| explicit PicasaDataProvider(const base::FilePath& database_path); |
| virtual ~PicasaDataProvider(); |
| |
| // Ask the data provider to refresh the data if necessary. |ready_callback| |
| // will be called when the data is up to date. |
| void RefreshData(DataType needed_data, const ReadyCallback& ready_callback); |
| |
| // These methods return scoped_ptrs because we want to return a copy that |
| // will not change to the caller. |
| scoped_ptr<AlbumMap> GetAlbums(); |
| scoped_ptr<AlbumMap> GetFolders(); |
| // |error| must be non-NULL. |
| scoped_ptr<AlbumImages> FindAlbumImages(const std::string& key, |
| base::PlatformFileError* error); |
| |
| protected: |
| // Notifies data provider that any currently cached data is stale. |
| virtual void InvalidateData(); |
| |
| private: |
| enum State { |
| STALE_DATA_STATE, |
| INVALID_DATA_STATE, |
| LIST_OF_ALBUMS_AND_FOLDERS_FRESH_STATE, |
| ALBUMS_IMAGES_FRESH_STATE |
| }; |
| |
| friend class PicasaFileUtilTest; |
| friend class TestPicasaDataProvider; |
| |
| // Called when the FilePathWatcher for Picasa's temp directory has started. |
| virtual void OnTempDirWatchStarted( |
| scoped_ptr<base::FilePathWatcher> temp_dir_watcher); |
| |
| // Called when Picasa's temp directory has changed. Virtual for testing. |
| virtual void OnTempDirChanged(const base::FilePath& temp_dir_path, |
| bool error); |
| |
| // Kicks off utility processes needed to fulfill any pending callbacks. |
| void DoRefreshIfNecessary(); |
| |
| void OnAlbumTableReaderDone(scoped_refptr<SafePicasaAlbumTableReader> reader, |
| bool parse_success, |
| const std::vector<AlbumInfo>& albums, |
| const std::vector<AlbumInfo>& folder); |
| |
| void OnAlbumsIndexerDone(scoped_refptr<SafePicasaAlbumsIndexer> indexer, |
| bool success, |
| const picasa::AlbumImagesMap& albums_images); |
| |
| static std::string DateToPathString(const base::Time& time); |
| static void UniquifyNames(const std::vector<AlbumInfo>& info_list, |
| AlbumMap* result_map); |
| |
| AlbumMap album_map_; |
| AlbumMap folder_map_; |
| AlbumImagesMap albums_images_; |
| |
| base::FilePath database_path_; |
| |
| State state_; |
| |
| // Callbacks that are waiting for their requested data to be ready. |
| std::vector<ReadyCallback> album_list_ready_callbacks_; |
| std::vector<ReadyCallback> albums_index_ready_callbacks_; |
| |
| // Stores the "live" in-flight utility processes. Callbacks from other |
| // (older) utility processes are stale and ignored. Only one of these at a |
| // time should be non-NULL. |
| scoped_refptr<SafePicasaAlbumTableReader> album_table_reader_; |
| scoped_refptr<SafePicasaAlbumsIndexer> albums_indexer_; |
| |
| // We watch the temp dir, as we can't detect database file modifications on |
| // Mac, but we are able to detect creation and deletion of temporary files. |
| scoped_ptr<base::FilePathWatcher> temp_dir_watcher_; |
| |
| base::WeakPtrFactory<PicasaDataProvider> weak_factory_; |
| |
| DISALLOW_COPY_AND_ASSIGN(PicasaDataProvider); |
| }; |
| |
| } // namespace picasa |
| |
| #endif // CHROME_BROWSER_MEDIA_GALLERIES_FILEAPI_PICASA_DATA_PROVIDER_H_ |