mediaview: Skeleton for ARC Documents Provider FS.

chrome/browser/chromeos/arc/fileapi/arc_documents_provider_async_file_util.h

+// Copyright 2016 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_CHROMEOS_ARC_FILEAPI_ARC_DOCUMENTS_PROVIDER_ASYNC_FILE_UTIL_H_
+#define CHROME_BROWSER_CHROMEOS_ARC_FILEAPI_ARC_DOCUMENTS_PROVIDER_ASYNC_FILE_UTIL_H_
+
+#include <memory>
+
+#include "base/callback.h"
+#include "base/macros.h"
+#include "base/memory/weak_ptr.h"
+#include "storage/browser/fileapi/async_file_util.h"
+
+namespace arc {
+
+// The implementation of storage::AsyncFileUtil for media view.
+//
+// All of the methods must be called on the IO thread.
+class ArcDocumentsProviderAsyncFileUtil : public storage::AsyncFileUtil {
+ public:
+  ArcDocumentsProviderAsyncFileUtil();
+  ~ArcDocumentsProviderAsyncFileUtil() override;
+
+  // storage::AsyncFileUtil overrides.
+  void CreateOrOpen(
+      std::unique_ptr<storage::FileSystemOperationContext> context,
+      const storage::FileSystemURL& url,
+      int file_flags,
+      const CreateOrOpenCallback& callback) override;
+  void EnsureFileExists(
+      std::unique_ptr<storage::FileSystemOperationContext> context,
+      const storage::FileSystemURL& url,
+      const EnsureFileExistsCallback& callback) override;
+  void CreateDirectory(
+      std::unique_ptr<storage::FileSystemOperationContext> context,
+      const storage::FileSystemURL& url,
+      bool exclusive,
+      bool recursive,
+      const StatusCallback& callback) override;
+  void GetFileInfo(std::unique_ptr<storage::FileSystemOperationContext> context,
+                   const storage::FileSystemURL& url,
+                   int fields,
+                   const GetFileInfoCallback& callback) override;
+  void ReadDirectory(
+      std::unique_ptr<storage::FileSystemOperationContext> context,
+      const storage::FileSystemURL& url,
+      const ReadDirectoryCallback& callback) override;
+  void Touch(std::unique_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(std::unique_ptr<storage::FileSystemOperationContext> context,
+                const storage::FileSystemURL& url,
+                int64_t length,
+                const StatusCallback& callback) override;
+  void CopyFileLocal(
+      std::unique_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(
+      std::unique_ptr<storage::FileSystemOperationContext> context,
+      const storage::FileSystemURL& src_url,
+      const storage::FileSystemURL& dest_url,
+      CopyOrMoveOption option,
+      const StatusCallback& callback) override;
+  void CopyInForeignFile(
+      std::unique_ptr<storage::FileSystemOperationContext> context,
+      const base::FilePath& src_file_path,
+      const storage::FileSystemURL& dest_url,
+      const StatusCallback& callback) override;
+  void DeleteFile(std::unique_ptr<storage::FileSystemOperationContext> context,
+                  const storage::FileSystemURL& url,
+                  const StatusCallback& callback) override;
+  void DeleteDirectory(
+      std::unique_ptr<storage::FileSystemOperationContext> context,
+      const storage::FileSystemURL& url,
+      const StatusCallback& callback) override;
+  void DeleteRecursively(
+      std::unique_ptr<storage::FileSystemOperationContext> context,
+      const storage::FileSystemURL& url,
+      const StatusCallback& callback) override;
+  void CreateSnapshotFile(
+      std::unique_ptr<storage::FileSystemOperationContext> context,
+      const storage::FileSystemURL& url,
+      const CreateSnapshotFileCallback& callback) override;
+
+ private:
+  base::WeakPtrFactory<ArcDocumentsProviderAsyncFileUtil> weak_ptr_factory_;

[hashimoto, 2016/12/13 07:52:29]

How about adding this when it's actually needed?

[Shuhei Takahashi, 2016/12/13 10:27:47]

Done.

+
+  DISALLOW_COPY_AND_ASSIGN(ArcDocumentsProviderAsyncFileUtil);
+};
+
+}  // namespace arc
+
+#endif  // CHROME_BROWSER_CHROMEOS_ARC_FILEAPI_ARC_DOCUMENTS_PROVIDER_ASYNC_FILE_UTIL_H_