chrome/browser/ui/app_list/profile_loader.h

   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
  16 namespace base {
  17 class FilePath;
  18 }
  19
  20 class 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.
  29 class 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_