1 files changed, 141 insertions, 0 deletions
diff --git a/webkit/browser/fileapi/isolated_file_system_backend.cc b/webkit/browser/fileapi/isolated_file_system_backend.cc
new file mode 100644
index 0000000..d40fe36
--- /dev/null
+++ b/webkit/browser/fileapi/isolated_file_system_backend.cc
@@ -0,0 +1,141 @@
+// Copyright (c) 2012 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 "webkit/browser/fileapi/isolated_file_system_backend.h"
+
+#include <string>
+
+#include "base/bind.h"
+#include "base/files/file_path.h"
+#include "base/files/file_util_proxy.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 "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/browser/fileapi/transient_file_util.h"
+#include "webkit/common/fileapi/file_system_types.h"
+#include "webkit/common/fileapi/file_system_util.h"
+
+namespace fileapi {
+
+IsolatedFileSystemBackend::IsolatedFileSystemBackend()
+    : isolated_file_util_(new AsyncFileUtilAdapter(new IsolatedFileUtil())),
+      dragged_file_util_(new AsyncFileUtilAdapter(new DraggedFileUtil())),
+      transient_file_util_(new AsyncFileUtilAdapter(new TransientFileUtil())) {
+}
+
+IsolatedFileSystemBackend::~IsolatedFileSystemBackend() {
+}
+
+bool IsolatedFileSystemBackend::CanHandleType(FileSystemType type) const {
+  switch (type) {
+    case kFileSystemTypeIsolated:
+    case kFileSystemTypeDragged:
+    case kFileSystemTypeForTransientFile:
+      return true;
+#if !defined(OS_CHROMEOS)
+    case kFileSystemTypeNativeLocal:
+    case kFileSystemTypeNativeForPlatformApp:
+      return true;
+#endif
+    default:
+      return false;
+  }
+}
+
+void IsolatedFileSystemBackend::OpenFileSystem(
+    const GURL& origin_url,
+    FileSystemType type,
+    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));
+}
+
+FileSystemFileUtil* IsolatedFileSystemBackend::GetFileUtil(
+    FileSystemType type) {
+  switch (type) {
+    case kFileSystemTypeNativeLocal:
+      return isolated_file_util_->sync_file_util();
+    case kFileSystemTypeDragged:
+      return dragged_file_util_->sync_file_util();
+    case kFileSystemTypeForTransientFile:
+      return transient_file_util_->sync_file_util();
+    default:
+      NOTREACHED();
+  }
+  return NULL;
+}
+
+AsyncFileUtil* IsolatedFileSystemBackend::GetAsyncFileUtil(
+    FileSystemType type) {
+  switch (type) {
+    case kFileSystemTypeNativeLocal:
+      return isolated_file_util_.get();
+    case kFileSystemTypeDragged:
+      return dragged_file_util_.get();
+    case kFileSystemTypeForTransientFile:
+      return transient_file_util_.get();
+    default:
+      NOTREACHED();
+  }
+  return NULL;
+}
+
+CopyOrMoveFileValidatorFactory*
+IsolatedFileSystemBackend::GetCopyOrMoveFileValidatorFactory(
+    FileSystemType type, base::PlatformFileError* error_code) {
+  DCHECK(error_code);
+  *error_code = base::PLATFORM_FILE_OK;
+  return NULL;
+}
+
+FileSystemOperation* IsolatedFileSystemBackend::CreateFileSystemOperation(
+    const FileSystemURL& url,
+    FileSystemContext* context,
+    base::PlatformFileError* error_code) const {
+  return new LocalFileSystemOperation(
+      url, context, make_scoped_ptr(new FileSystemOperationContext(context)));
+}
+
+scoped_ptr<webkit_blob::FileStreamReader>
+IsolatedFileSystemBackend::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<FileStreamWriter> IsolatedFileSystemBackend::CreateFileStreamWriter(
+    const FileSystemURL& url,
+    int64 offset,
+    FileSystemContext* context) const {
+  return scoped_ptr<FileStreamWriter>(new LocalFileStreamWriter(
+      context->task_runners()->file_task_runner(), url.path(), offset));
+}
+
+FileSystemQuotaUtil* IsolatedFileSystemBackend::GetQuotaUtil() {
+  // No quota support.
+  return NULL;
+}
+
+}  // namespace fileapi