[fsp] Add support for opening files.

chrome/browser/chromeos/file_system_provider/operations/open_file.cc

+// Copyright 2014 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/file_system_provider/operations/open_file.h"
+
+#include <string>
+
+#include "chrome/common/extensions/api/file_system_provider.h"
+#include "chrome/common/extensions/api/file_system_provider_internal.h"
+
+namespace chromeos {
+namespace file_system_provider {
+namespace operations {
+
+OpenFile::OpenFile(extensions::EventRouter* event_router,
+                   const ProvidedFileSystemInfo& file_system_info,
+                   const base::FilePath& file_path,
+                   ProvidedFileSystemInterface::OpenFileMode mode,
+                   bool create,
+                   const fileapi::AsyncFileUtil::StatusCallback& callback)
+    : Operation(event_router, file_system_info),
+      file_path_(file_path),
+      mode_(mode),
+      create_(create),
+      callback_(callback) {
+}
+
+OpenFile::~OpenFile() {
+}
+
+bool OpenFile::Execute(int request_id) {
+  scoped_ptr<base::ListValue> values(new base::ListValue);
+  values->AppendString(file_path_.AsUTF8Unsafe());
+
+  switch (mode_) {
+    case ProvidedFileSystemInterface::OPEN_FILE_MODE_READ:
+      values->AppendString(extensions::api::file_system_provider::ToString(
+          extensions::api::file_system_provider::OPEN_FILE_MODE_READ));
+      break;
+    case ProvidedFileSystemInterface::OPEN_FILE_MODE_WRITE:
+      values->AppendString(extensions::api::file_system_provider::ToString(
+          extensions::api::file_system_provider::OPEN_FILE_MODE_WRITE));
+      break;
+  }
+
+  values->AppendBoolean(create_);
+
+  return SendEvent(
+      request_id,
+      extensions::api::file_system_provider::OnOpenFileRequested::kEventName,
+      values.Pass());
+}
+
+void OpenFile::OnSuccess(int /* request_id */,
+                         scoped_ptr<RequestValue> result,
+                         bool has_next) {
+  callback_.Run(base::File::FILE_OK);
+}
+
+void OpenFile::OnError(int /* request_id */, base::File::Error error) {
+  callback_.Run(error);
+}
+
+}  // namespace operations
+}  // namespace file_system_provider
+}  // namespace chromeos