fileapi: Rename FileSystemMountProvider to FileSystemBackend

chrome/browser/media_galleries/fileapi/media_file_system_mount_point_provider.cc

-// 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.
-
-#include "chrome/browser/media_galleries/fileapi/media_file_system_mount_point_provider.h"
-
-#include <string>
-
-#include "base/bind.h"
-#include "base/files/file_path.h"
-#include "base/logging.h"
-#include "base/message_loop/message_loop_proxy.h"
-#include "base/platform_file.h"
-#include "base/sequenced_task_runner.h"
-#include "base/threading/sequenced_worker_pool.h"
-#include "chrome/browser/media_galleries/fileapi/device_media_async_file_util.h"
-#include "chrome/browser/media_galleries/fileapi/media_file_validator_factory.h"
-#include "chrome/browser/media_galleries/fileapi/media_path_filter.h"
-#include "chrome/browser/media_galleries/fileapi/native_media_file_util.h"
-#include "content/public/browser/browser_thread.h"
-#include "webkit/browser/blob/local_file_stream_reader.h"
-#include "webkit/browser/fileapi/async_file_util_adapter.h"
-#include "webkit/browser/fileapi/copy_or_move_file_validator.h"
-#include "webkit/browser/fileapi/file_system_context.h"
-#include "webkit/browser/fileapi/file_system_file_stream_reader.h"
-#include "webkit/browser/fileapi/file_system_operation_context.h"
-#include "webkit/browser/fileapi/file_system_task_runners.h"
-#include "webkit/browser/fileapi/isolated_context.h"
-#include "webkit/browser/fileapi/isolated_file_util.h"
-#include "webkit/browser/fileapi/local_file_stream_writer.h"
-#include "webkit/browser/fileapi/local_file_system_operation.h"
-#include "webkit/browser/fileapi/native_file_util.h"
-#include "webkit/common/fileapi/file_system_types.h"
-#include "webkit/common/fileapi/file_system_util.h"
-
-#if defined(OS_WIN) || defined(OS_MACOSX)
-#include "chrome/browser/media_galleries/fileapi/itunes_file_util.h"
-#include "chrome/browser/media_galleries/fileapi/picasa/picasa_file_util.h"
-#endif  // defined(OS_WIN) || defined(OS_MACOSX)
-
-using fileapi::FileSystemContext;
-using fileapi::FileSystemURL;
-
-namespace chrome {
-
-const char MediaFileSystemMountPointProvider::kMediaTaskRunnerName[] =
-    "media-task-runner";
-const char MediaFileSystemMountPointProvider::kMediaPathFilterKey[] =
-    "MediaPathFilterKey";
-const char MediaFileSystemMountPointProvider::kMTPDeviceDelegateURLKey[] =
-    "MTPDeviceDelegateKey";
-
-MediaFileSystemMountPointProvider::MediaFileSystemMountPointProvider(
-    const base::FilePath& profile_path,
-    base::SequencedTaskRunner* media_task_runner)
-    : profile_path_(profile_path),
-      media_task_runner_(media_task_runner),
-      media_path_filter_(new MediaPathFilter),
-      media_copy_or_move_file_validator_factory_(new MediaFileValidatorFactory),
-      native_media_file_util_(new NativeMediaFileUtil()),
-      device_media_async_file_util_(
-          DeviceMediaAsyncFileUtil::Create(profile_path_))
-#if defined(OS_WIN) || defined(OS_MACOSX)
-      ,
-      picasa_file_util_(new picasa::PicasaFileUtil()),
-      itunes_file_util_(new itunes::ItunesFileUtil())
-#endif  // defined(OS_WIN) || defined(OS_MACOSX)
-{
-}
-
-MediaFileSystemMountPointProvider::~MediaFileSystemMountPointProvider() {
-}
-
-// static
-bool MediaFileSystemMountPointProvider::CurrentlyOnMediaTaskRunnerThread() {
-  base::SequencedWorkerPool* pool = content::BrowserThread::GetBlockingPool();
-  base::SequencedWorkerPool::SequenceToken media_sequence_token =
-      pool->GetNamedSequenceToken(kMediaTaskRunnerName);
-  return pool->IsRunningSequenceOnCurrentThread(media_sequence_token);
-}
-
-// static
-scoped_refptr<base::SequencedTaskRunner>
-MediaFileSystemMountPointProvider::MediaTaskRunner() {
-  base::SequencedWorkerPool* pool = content::BrowserThread::GetBlockingPool();
-  base::SequencedWorkerPool::SequenceToken media_sequence_token =
-      pool->GetNamedSequenceToken(kMediaTaskRunnerName);
-  return pool->GetSequencedTaskRunner(media_sequence_token);
-}
-
-bool MediaFileSystemMountPointProvider::CanHandleType(
-    fileapi::FileSystemType type) const {
-  switch (type) {
-    case fileapi::kFileSystemTypeNativeMedia:
-    case fileapi::kFileSystemTypeDeviceMedia:
-#if defined(OS_WIN) || defined(OS_MACOSX)
-    case fileapi::kFileSystemTypePicasa:
-    case fileapi::kFileSystemTypeItunes:
-#endif  // defined(OS_WIN) || defined(OS_MACOSX)
-      return true;
-    default:
-      return false;
-  }
-}
-
-void MediaFileSystemMountPointProvider::OpenFileSystem(
-    const GURL& origin_url,
-    fileapi::FileSystemType type,
-    fileapi::OpenFileSystemMode mode,
-    const OpenFileSystemCallback& callback) {
-  // We never allow opening a new isolated FileSystem via usual OpenFileSystem.
-  base::MessageLoopProxy::current()->PostTask(
-      FROM_HERE,
-      base::Bind(callback, base::PLATFORM_FILE_ERROR_SECURITY));
-}
-
-fileapi::FileSystemFileUtil* MediaFileSystemMountPointProvider::GetFileUtil(
-    fileapi::FileSystemType type) {
-  NOTREACHED();
-  return NULL;
-}
-
-fileapi::AsyncFileUtil* MediaFileSystemMountPointProvider::GetAsyncFileUtil(
-    fileapi::FileSystemType type) {
-  switch (type) {
-    case fileapi::kFileSystemTypeNativeMedia:
-      return native_media_file_util_.get();
-    case fileapi::kFileSystemTypeDeviceMedia:
-      return device_media_async_file_util_.get();
-#if defined(OS_WIN) || defined(OS_MACOSX)
-    case fileapi::kFileSystemTypeItunes:
-      return itunes_file_util_.get();
-    case fileapi::kFileSystemTypePicasa:
-      return picasa_file_util_.get();
-#endif  // defined(OS_WIN) || defined(OS_MACOSX)
-    default:
-      NOTREACHED();
-  }
-  return NULL;
-}
-
-fileapi::CopyOrMoveFileValidatorFactory*
-MediaFileSystemMountPointProvider::GetCopyOrMoveFileValidatorFactory(
-    fileapi::FileSystemType type, base::PlatformFileError* error_code) {
-  DCHECK(error_code);
-  *error_code = base::PLATFORM_FILE_OK;
-  switch (type) {
-    case fileapi::kFileSystemTypeNativeMedia:
-    case fileapi::kFileSystemTypeDeviceMedia:
-    case fileapi::kFileSystemTypeItunes:
-      if (!media_copy_or_move_file_validator_factory_) {
-        *error_code = base::PLATFORM_FILE_ERROR_SECURITY;
-        return NULL;
-      }
-      return media_copy_or_move_file_validator_factory_.get();
-    default:
-      NOTREACHED();
-  }
-  return NULL;
-}
-
-fileapi::FileSystemOperation*
-MediaFileSystemMountPointProvider::CreateFileSystemOperation(
-    const FileSystemURL& url,
-    FileSystemContext* context,
-    base::PlatformFileError* error_code) const {
-  scoped_ptr<fileapi::FileSystemOperationContext> operation_context(
-      new fileapi::FileSystemOperationContext(
-          context, media_task_runner_.get()));
-
-  operation_context->SetUserValue(kMediaPathFilterKey,
-                                  media_path_filter_.get());
-  if (url.type() == fileapi::kFileSystemTypeDeviceMedia) {
-    operation_context->SetUserValue(kMTPDeviceDelegateURLKey,
-                                    url.filesystem_id());
-  }
-
-  return new fileapi::LocalFileSystemOperation(url, context,
-                                               operation_context.Pass());
-}
-
-scoped_ptr<webkit_blob::FileStreamReader>
-MediaFileSystemMountPointProvider::CreateFileStreamReader(
-    const FileSystemURL& url,
-    int64 offset,
-    const base::Time& expected_modification_time,
-    FileSystemContext* context) const {
-  return scoped_ptr<webkit_blob::FileStreamReader>(
-      new webkit_blob::LocalFileStreamReader(
-          context->task_runners()->file_task_runner(),
-          url.path(), offset, expected_modification_time));
-}
-
-scoped_ptr<fileapi::FileStreamWriter>
-MediaFileSystemMountPointProvider::CreateFileStreamWriter(
-    const FileSystemURL& url,
-    int64 offset,
-    FileSystemContext* context) const {
-  return scoped_ptr<fileapi::FileStreamWriter>(
-      new fileapi::LocalFileStreamWriter(
-          context->task_runners()->file_task_runner(),
-          url.path(), offset));
-}
-
-fileapi::FileSystemQuotaUtil*
-MediaFileSystemMountPointProvider::GetQuotaUtil() {
-  // No quota support.
-  return NULL;
-}
-
-}  // namespace chrome