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// Copyright 2013 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.
#ifndef CHROME_BROWSER_UI_APP_LIST_PROFILE_LOADER_H_
#define CHROME_BROWSER_UI_APP_LIST_PROFILE_LOADER_H_
#include "base/callback.h"
#include "base/memory/weak_ptr.h"
namespace base {
class FilePath;
}
class Profile;
class ProfileLoaderUnittest;
class ProfileStore;
class ScopedKeepAlive;
// This class loads profiles asynchronously and calls the provided callback once
// the profile is ready. Only the callback for the most recent load request is
// called, and only if the load was successful.
//
// This is useful for loading profiles in response to user interaction where
// only the latest requested profile is required.
// TODO(koz): Merge this into AppListServiceImpl.
class ProfileLoader {
public:
explicit ProfileLoader(ProfileStore* profile_store);
~ProfileLoader();
bool IsAnyProfileLoading() const;
void InvalidatePendingProfileLoads();
void LoadProfileInvalidatingOtherLoads(
const base::FilePath& profile_file_path,
base::Callback<void(Profile*)> callback);
private:
friend class ::ProfileLoaderUnittest;
void OnProfileLoaded(int profile_load_sequence_id,
base::Callback<void(Profile*)> callback,
Profile* profile);
void IncrementPendingProfileLoads();
void DecrementPendingProfileLoads();
ProfileStore* profile_store_;
scoped_ptr<ScopedKeepAlive> keep_alive_;
int profile_load_sequence_id_;
int pending_profile_loads_;
base::WeakPtrFactory<ProfileLoader> weak_factory_;
DISALLOW_COPY_AND_ASSIGN(ProfileLoader);
};
#endif // CHROME_BROWSER_UI_APP_LIST_PROFILE_LOADER_H_
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