service.h revision effb81e5f8246d0db0270817048dc992db66e9fb 
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_SERVICE_H_
6#define CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_SERVICE_H_
7
8#include <map>
9#include <string>
10#include <vector>
11
12#include "base/observer_list.h"
13#include "chrome/browser/chromeos/file_system_provider/observer.h"
14#include "chrome/browser/profiles/profile.h"
15#include "chrome/common/extensions/api/file_system_provider.h"
16#include "components/keyed_service/core/keyed_service.h"
17#include "content/public/browser/browser_context.h"
18
19namespace chromeos {
20namespace file_system_provider {
21
22class ServiceFactory;
23
24// Manages and registers the fileSystemProvider service.
25class Service : public KeyedService {
26 public:
27  explicit Service(Profile* profile);
28  virtual ~Service();
29
30  // Registers a file system provided by an extension with the |extension_id|.
31  // For success, it returns a numeric file system id, which is an
32  // auto-incremented non-zero value. For failures, it returns zero.
33  int RegisterFileSystem(const std::string& extension_id,
34                         const std::string& file_system_name);
35
36  // Unregisters a file system with the specified |file_system_id| for the
37  // |extension_id|. For success returns true, otherwise false.
38  bool UnregisterFileSystem(const std::string& extension_id,
39                            int file_system_id);
40
41  // Returns a list of currently registered file systems. All items are copied.
42  std::vector<ProvidedFileSystem> GetRegisteredFileSystems();
43
44  // Adds and removes observers.
45  void AddObserver(Observer* observer);
46  void RemoveObserver(Observer* observer);
47
48  // Gets the singleton instance for the |context|.
49  static Service* Get(content::BrowserContext* context);
50
51 private:
52  typedef std::map<int, ProvidedFileSystem> FileSystemMap;
53
54  Profile* profile_;
55  ObserverList<Observer> observers_;
56  FileSystemMap file_systems_;
57  int next_id_;
58
59  DISALLOW_COPY_AND_ASSIGN(Service);
60};
61
62}  // namespace file_system_provider
63}  // namespace chromeos
64
65#endif  // CHROME_BROWSER_CHROMEOS_FILE_SYSTEM_PROVIDER_SERVICE_H_
66