profile_loader.h revision 4e180b6a0b4720a9b8e9e959a882386f690f08ff 
1// Copyright 2013 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_UI_APP_LIST_PROFILE_LOADER_H_
6#define CHROME_BROWSER_UI_APP_LIST_PROFILE_LOADER_H_
7
8#include "base/callback.h"
9#include "base/memory/scoped_ptr.h"
10#include "base/memory/weak_ptr.h"
11#include "chrome/browser/profiles/profile.h"
12#include "chrome/browser/profiles/profile_manager.h"
13#include "chrome/browser/ui/app_list/keep_alive_service.h"
14#include "chrome/browser/ui/app_list/profile_store.h"
15
16namespace base {
17class FilePath;
18}
19
20class ProfileManager;
21
22// This class loads profiles asynchronously and calls the provided callback once
23// the profile is ready. Only the callback for the most recent load request is
24// called, and only if the load was successful.
25//
26// This is useful for loading profiles in response to user interaction where
27// only the latest requested profile is required.
28// TODO(koz): Merge this into AppListServiceImpl.
29class ProfileLoader {
30 public:
31  explicit ProfileLoader(ProfileStore* profile_store,
32                         scoped_ptr<KeepAliveService> keep_alive_service);
33  ~ProfileLoader();
34
35  bool IsAnyProfileLoading() const;
36  void InvalidatePendingProfileLoads();
37  void LoadProfileInvalidatingOtherLoads(
38      const base::FilePath& profile_file_path,
39      base::Callback<void(Profile*)> callback);
40
41 private:
42  void OnProfileLoaded(int profile_load_sequence_id,
43                       base::Callback<void(Profile*)> callback,
44                       Profile* profile);
45
46  void IncrementPendingProfileLoads();
47  void DecrementPendingProfileLoads();
48
49  ProfileStore* profile_store_;
50  scoped_ptr<KeepAliveService> keep_alive_service_;
51  int profile_load_sequence_id_;
52  int pending_profile_loads_;
53
54  base::WeakPtrFactory<ProfileLoader> weak_factory_;
55
56  DISALLOW_COPY_AND_ASSIGN(ProfileLoader);
57};
58
59#endif  // CHROME_BROWSER_UI_APP_LIST_PROFILE_LOADER_H_
60