| // Copyright (c) 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_DEVICE_MEDIA_ASYNC_FILE_UTIL_H_ |
| #define CHROME_BROWSER_MEDIA_GALLERIES_FILEAPI_DEVICE_MEDIA_ASYNC_FILE_UTIL_H_ |
| |
| #include "base/files/file.h" |
| #include "base/files/file_path.h" |
| #include "base/memory/ref_counted.h" |
| #include "base/memory/scoped_ptr.h" |
| #include "base/memory/weak_ptr.h" |
| #include "storage/browser/blob/shareable_file_reference.h" |
| #include "storage/browser/fileapi/async_file_util.h" |
| |
| namespace storage { |
| class FileSystemOperationContext; |
| class FileSystemURL; |
| } |
| |
| namespace storage { |
| class FileStreamReader; |
| } |
| |
| enum MediaFileValidationType { |
| NO_MEDIA_FILE_VALIDATION, |
| APPLY_MEDIA_FILE_VALIDATION, |
| }; |
| |
| class DeviceMediaAsyncFileUtil : public storage::AsyncFileUtil { |
| public: |
| ~DeviceMediaAsyncFileUtil() override; |
| |
| // Returns an instance of DeviceMediaAsyncFileUtil. |
| static scoped_ptr<DeviceMediaAsyncFileUtil> Create( |
| const base::FilePath& profile_path, |
| MediaFileValidationType validation_type); |
| |
| bool SupportsStreaming(const storage::FileSystemURL& url); |
| |
| // AsyncFileUtil overrides. |
| void CreateOrOpen(scoped_ptr<storage::FileSystemOperationContext> context, |
| const storage::FileSystemURL& url, |
| int file_flags, |
| const CreateOrOpenCallback& callback) override; |
| void EnsureFileExists(scoped_ptr<storage::FileSystemOperationContext> context, |
| const storage::FileSystemURL& url, |
| const EnsureFileExistsCallback& callback) override; |
| void CreateDirectory(scoped_ptr<storage::FileSystemOperationContext> context, |
| const storage::FileSystemURL& url, |
| bool exclusive, |
| bool recursive, |
| const StatusCallback& callback) override; |
| void GetFileInfo(scoped_ptr<storage::FileSystemOperationContext> context, |
| const storage::FileSystemURL& url, |
| const GetFileInfoCallback& callback) override; |
| void ReadDirectory(scoped_ptr<storage::FileSystemOperationContext> context, |
| const storage::FileSystemURL& url, |
| const ReadDirectoryCallback& callback) override; |
| void Touch(scoped_ptr<storage::FileSystemOperationContext> context, |
| const storage::FileSystemURL& url, |
| const base::Time& last_access_time, |
| const base::Time& last_modified_time, |
| const StatusCallback& callback) override; |
| void Truncate(scoped_ptr<storage::FileSystemOperationContext> context, |
| const storage::FileSystemURL& url, |
| int64 length, |
| const StatusCallback& callback) override; |
| void CopyFileLocal(scoped_ptr<storage::FileSystemOperationContext> context, |
| const storage::FileSystemURL& src_url, |
| const storage::FileSystemURL& dest_url, |
| CopyOrMoveOption option, |
| const CopyFileProgressCallback& progress_callback, |
| const StatusCallback& callback) override; |
| void MoveFileLocal(scoped_ptr<storage::FileSystemOperationContext> context, |
| const storage::FileSystemURL& src_url, |
| const storage::FileSystemURL& dest_url, |
| CopyOrMoveOption option, |
| const StatusCallback& callback) override; |
| void CopyInForeignFile( |
| scoped_ptr<storage::FileSystemOperationContext> context, |
| const base::FilePath& src_file_path, |
| const storage::FileSystemURL& dest_url, |
| const StatusCallback& callback) override; |
| void DeleteFile(scoped_ptr<storage::FileSystemOperationContext> context, |
| const storage::FileSystemURL& url, |
| const StatusCallback& callback) override; |
| void DeleteDirectory(scoped_ptr<storage::FileSystemOperationContext> context, |
| const storage::FileSystemURL& url, |
| const StatusCallback& callback) override; |
| void DeleteRecursively( |
| scoped_ptr<storage::FileSystemOperationContext> context, |
| const storage::FileSystemURL& url, |
| const StatusCallback& callback) override; |
| void CreateSnapshotFile( |
| scoped_ptr<storage::FileSystemOperationContext> context, |
| const storage::FileSystemURL& url, |
| const CreateSnapshotFileCallback& callback) override; |
| |
| // This method is called when existing Blobs are read. |
| // |expected_modification_time| indicates the expected snapshot state of the |
| // underlying storage. The returned FileStreamReader must return an error |
| // when the state of the underlying storage changes. Any errors associated |
| // with reading this file are returned by the FileStreamReader itself. |
| virtual scoped_ptr<storage::FileStreamReader> GetFileStreamReader( |
| const storage::FileSystemURL& url, |
| int64 offset, |
| const base::Time& expected_modification_time, |
| storage::FileSystemContext* context); |
| |
| private: |
| class MediaPathFilterWrapper; |
| |
| // Use Create() to get an instance of DeviceMediaAsyncFileUtil. |
| DeviceMediaAsyncFileUtil(const base::FilePath& profile_path, |
| MediaFileValidationType validation_type); |
| |
| // Called when GetFileInfo method call succeeds. |file_info| contains the |
| // file details of the requested url. |callback| is invoked to complete the |
| // GetFileInfo request. |
| void OnDidGetFileInfo( |
| base::SequencedTaskRunner* task_runner, |
| const base::FilePath& path, |
| const GetFileInfoCallback& callback, |
| const base::File::Info& file_info); |
| |
| // Called when ReadDirectory method call succeeds. |callback| is invoked to |
| // complete the ReadDirectory request. |
| // |
| // If the contents of the given directory are reported in one batch, then |
| // |file_list| will have the list of all files/directories in the given |
| // directory and |has_more| will be false. |
| // |
| // If the contents of the given directory are reported in multiple chunks, |
| // |file_list| will have only a subset of all contents (the subsets reported |
| // in any two calls are disjoint), and |has_more| will be true, except for |
| // the last chunk. |
| void OnDidReadDirectory( |
| base::SequencedTaskRunner* task_runner, |
| const ReadDirectoryCallback& callback, |
| const EntryList& file_list, |
| bool has_more); |
| |
| bool validate_media_files() const; |
| |
| // Profile path. |
| const base::FilePath profile_path_; |
| |
| scoped_refptr<MediaPathFilterWrapper> media_path_filter_wrapper_; |
| |
| // For callbacks that may run after destruction. |
| base::WeakPtrFactory<DeviceMediaAsyncFileUtil> weak_ptr_factory_; |
| |
| DISALLOW_COPY_AND_ASSIGN(DeviceMediaAsyncFileUtil); |
| }; |
| |
| #endif // CHROME_BROWSER_MEDIA_GALLERIES_FILEAPI_DEVICE_MEDIA_ASYNC_FILE_UTIL_H_ |