1// Copyright 2014 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#ifndef CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_OPERATIONS_OPERATION_H_
6#define CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_OPERATIONS_OPERATION_H_
7
8#include <string>
9
10#include "base/files/file.h"
11#include "base/memory/scoped_ptr.h"
12#include "chrome/browser/chromeos/file_system_provider/provided_file_system_info.h"
13#include "chrome/browser/chromeos/file_system_provider/request_manager.h"
14#include "storage/browser/fileapi/async_file_util.h"
15
16namespace base {
17class ListValue;
18}  // namespace base
19
20namespace extensions {
21struct Event;
22class EventRouter;
23}  // namespace extensions
24
25namespace chromeos {
26namespace file_system_provider {
27namespace operations {
28
29// Base class for operation bridges between fileapi and providing extensions.
30class Operation : public RequestManager::HandlerInterface {
31 public:
32  typedef base::Callback<bool(scoped_ptr<extensions::Event> event)>
33      DispatchEventImplCallback;
34
35  Operation(extensions::EventRouter* event_router,
36            const ProvidedFileSystemInfo& file_system_info);
37  virtual ~Operation();
38
39  // RequestManager::HandlerInterface overrides.
40  virtual bool Execute(int request_id) OVERRIDE = 0;
41  virtual void OnSuccess(int request_id,
42                         scoped_ptr<RequestValue> result,
43                         bool has_more) OVERRIDE = 0;
44  virtual void OnError(int request_id,
45                       scoped_ptr<RequestValue> result,
46                       base::File::Error error) OVERRIDE = 0;
47
48  // Sets custom dispatchign event implementation for tests.
49  void SetDispatchEventImplForTesting(
50      const DispatchEventImplCallback& callback);
51
52 protected:
53  // Sends an event to the providing extension. Returns false, if the providing
54  // extension does not handle the |event_name| event.
55  bool SendEvent(int request_id,
56                 const std::string& event_name,
57                 scoped_ptr<base::ListValue> event_args);
58
59  ProvidedFileSystemInfo file_system_info_;
60
61 private:
62  DispatchEventImplCallback dispatch_event_impl_;
63  DISALLOW_COPY_AND_ASSIGN(Operation);
64};
65
66}  // namespace operations
67}  // namespace file_system_provider
68}  // namespace chromeos
69
70#endif  // CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_OPERATIONS_OPERATION_H_
71