mediaview: Skeleton for ARC Documents Provider FS.

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

+// 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.
+
+#include "chrome/browser/chromeos/arc/fileapi/arc_documents_provider_async_file_util.h"
+
+#include "base/callback.h"
+#include "base/files/file.h"
+#include "base/files/file_path.h"
+#include "base/logging.h"
+#include "content/public/browser/browser_thread.h"
+#include "storage/browser/blob/shareable_file_reference.h"
+
+using content::BrowserThread;
+
+namespace arc {
+
+ArcDocumentsProviderAsyncFileUtil::ArcDocumentsProviderAsyncFileUtil() =
+    default;
+
+ArcDocumentsProviderAsyncFileUtil::~ArcDocumentsProviderAsyncFileUtil() =
+    default;
+
+void ArcDocumentsProviderAsyncFileUtil::CreateOrOpen(
+    std::unique_ptr<storage::FileSystemOperationContext> context,
+    const storage::FileSystemURL& url,
+    int file_flags,
+    const CreateOrOpenCallback& callback) {
+  DCHECK_CURRENTLY_ON(BrowserThread::IO);
+  // TODO(nya): Implement this function if it is ever called.
+  NOTIMPLEMENTED();
+  callback.Run(base::File(base::File::FILE_ERROR_INVALID_OPERATION),
+               base::Closure());
+}
+
+void ArcDocumentsProviderAsyncFileUtil::EnsureFileExists(
+    std::unique_ptr<storage::FileSystemOperationContext> context,
+    const storage::FileSystemURL& url,
+    const EnsureFileExistsCallback& callback) {
+  DCHECK_CURRENTLY_ON(BrowserThread::IO);
+  NOTREACHED();  // Read-only file system.
+  callback.Run(base::File::FILE_ERROR_ACCESS_DENIED, false);
+}
+
+void ArcDocumentsProviderAsyncFileUtil::CreateDirectory(
+    std::unique_ptr<storage::FileSystemOperationContext> context,
+    const storage::FileSystemURL& url,
+    bool exclusive,
+    bool recursive,
+    const StatusCallback& callback) {
+  DCHECK_CURRENTLY_ON(BrowserThread::IO);
+  NOTREACHED();  // Read-only file system.
+  callback.Run(base::File::FILE_ERROR_ACCESS_DENIED);
+}
+
+void ArcDocumentsProviderAsyncFileUtil::GetFileInfo(
+    std::unique_ptr<storage::FileSystemOperationContext> context,
+    const storage::FileSystemURL& url,
+    int fields,
+    const GetFileInfoCallback& callback) {
+  DCHECK_CURRENTLY_ON(BrowserThread::IO);
+  NOTIMPLEMENTED();  // TODO(crbug.com/671511): Implement this function.
+  callback.Run(base::File::FILE_ERROR_NOT_FOUND, base::File::Info());
+}
+
+void ArcDocumentsProviderAsyncFileUtil::ReadDirectory(
+    std::unique_ptr<storage::FileSystemOperationContext> context,
+    const storage::FileSystemURL& url,
+    const ReadDirectoryCallback& callback) {
+  DCHECK_CURRENTLY_ON(BrowserThread::IO);
+  NOTIMPLEMENTED();  // TODO(crbug.com/671511): Implement this function.
+  callback.Run(base::File::FILE_ERROR_NOT_FOUND, EntryList(),
+               false /* has_more */);
+}
+
+void ArcDocumentsProviderAsyncFileUtil::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) {
+  DCHECK_CURRENTLY_ON(BrowserThread::IO);
+  NOTREACHED();  // Read-only file system.
+  callback.Run(base::File::FILE_ERROR_ACCESS_DENIED);
+}
+
+void ArcDocumentsProviderAsyncFileUtil::Truncate(
+    std::unique_ptr<storage::FileSystemOperationContext> context,
+    const storage::FileSystemURL& url,
+    int64_t length,
+    const StatusCallback& callback) {
+  DCHECK_CURRENTLY_ON(BrowserThread::IO);
+  NOTREACHED();  // Read-only file system.
+  callback.Run(base::File::FILE_ERROR_ACCESS_DENIED);
+}
+
+void ArcDocumentsProviderAsyncFileUtil::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) {
+  DCHECK_CURRENTLY_ON(BrowserThread::IO);
+  NOTREACHED();  // Read-only file system.
+  callback.Run(base::File::FILE_ERROR_ACCESS_DENIED);
+}
+
+void ArcDocumentsProviderAsyncFileUtil::MoveFileLocal(
+    std::unique_ptr<storage::FileSystemOperationContext> context,
+    const storage::FileSystemURL& src_url,
+    const storage::FileSystemURL& dest_url,
+    CopyOrMoveOption option,
+    const StatusCallback& callback) {
+  DCHECK_CURRENTLY_ON(BrowserThread::IO);
+  NOTREACHED();  // Read-only file system.
+  callback.Run(base::File::FILE_ERROR_ACCESS_DENIED);
+}
+
+void ArcDocumentsProviderAsyncFileUtil::CopyInForeignFile(
+    std::unique_ptr<storage::FileSystemOperationContext> context,
+    const base::FilePath& src_file_path,
+    const storage::FileSystemURL& dest_url,
+    const StatusCallback& callback) {
+  DCHECK_CURRENTLY_ON(BrowserThread::IO);
+  NOTREACHED();  // Read-only file system.
+  callback.Run(base::File::FILE_ERROR_ACCESS_DENIED);
+}
+
+void ArcDocumentsProviderAsyncFileUtil::DeleteFile(
+    std::unique_ptr<storage::FileSystemOperationContext> context,
+    const storage::FileSystemURL& url,
+    const StatusCallback& callback) {
+  DCHECK_CURRENTLY_ON(BrowserThread::IO);
+  NOTREACHED();  // Read-only file system.
+  callback.Run(base::File::FILE_ERROR_ACCESS_DENIED);
+}
+
+void ArcDocumentsProviderAsyncFileUtil::DeleteDirectory(
+    std::unique_ptr<storage::FileSystemOperationContext> context,
+    const storage::FileSystemURL& url,
+    const StatusCallback& callback) {
+  DCHECK_CURRENTLY_ON(BrowserThread::IO);
+  NOTREACHED();  // Read-only file system.
+  callback.Run(base::File::FILE_ERROR_ACCESS_DENIED);
+}
+
+void ArcDocumentsProviderAsyncFileUtil::DeleteRecursively(
+    std::unique_ptr<storage::FileSystemOperationContext> context,
+    const storage::FileSystemURL& url,
+    const StatusCallback& callback) {
+  DCHECK_CURRENTLY_ON(BrowserThread::IO);
+  NOTREACHED();  // Read-only file system.
+  callback.Run(base::File::FILE_ERROR_ACCESS_DENIED);
+}
+
+void ArcDocumentsProviderAsyncFileUtil::CreateSnapshotFile(
+    std::unique_ptr<storage::FileSystemOperationContext> context,
+    const storage::FileSystemURL& url,
+    const CreateSnapshotFileCallback& callback) {
+  DCHECK_CURRENTLY_ON(BrowserThread::IO);
+  NOTIMPLEMENTED();  // TODO(crbug.com/671511): Implement this function.
+  callback.Run(base::File::FILE_ERROR_FAILED, base::File::Info(),
+               base::FilePath(),
+               scoped_refptr<storage::ShareableFileReference>());
+}
+
+}  // namespace arc