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// Copyright (c) 2012 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_ASH_APP_SYNC_UI_STATE_H_
#define CHROME_BROWSER_UI_ASH_APP_SYNC_UI_STATE_H_
#include "base/basictypes.h"
#include "base/compiler_specific.h"
#include "base/observer_list.h"
#include "base/timer/timer.h"
#include "chrome/browser/sync/profile_sync_service_observer.h"
#include "components/keyed_service/core/keyed_service.h"
#include "content/public/browser/notification_observer.h"
#include "content/public/browser/notification_registrar.h"
class AppSyncUIStateObserver;
class Profile;
class ProfileSyncService;
// AppSyncUIState watches app sync and installation and change its state
// accordingly. Its status is for UI display only. It only watches for new
// normal user profile (i.e. it does not watch for guest profile or exsiting
// user profile) and lasts for at the most 1 minute.
class AppSyncUIState : public KeyedService,
public content::NotificationObserver,
public ProfileSyncServiceObserver {
public:
enum Status {
STATUS_NORMAL,
STATUS_SYNCING, // Syncing apps or installing synced apps.
STATUS_TIMED_OUT, // Timed out when waiting for sync to finish.
};
// Returns the instance for the given |profile|. It's a convenience wrapper
// of AppSyncUIStateFactory::GetForProfile. Note this function returns
// NULL if ShouldObserveAppSyncForProfile returns false for |profile|.
static AppSyncUIState* Get(Profile* profile);
// Returns true if |profile| should be watched for app syncing.
static bool ShouldObserveAppSyncForProfile(Profile* profile);
explicit AppSyncUIState(Profile* profile);
virtual ~AppSyncUIState();
void AddObserver(AppSyncUIStateObserver* observer);
void RemoveObserver(AppSyncUIStateObserver* observer);
Status status() const { return status_; }
private:
void StartObserving();
void StopObserving();
void SetStatus(Status status);
// Checks and sets app sync status. If sync has not setup, do nothing. If sync
// is completed and there is no pending synced extension install, sets
// STATUS_SYNCING. Otherwise, sets STATUS_NORMAL.
void CheckAppSync();
// Invoked when |max_syncing_status_timer_| fires.
void OnMaxSyncingTimer();
// content::NotificationObserver overrides:
virtual void Observe(int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) OVERRIDE;
// ProfileSyncServiceObserver overrides:
virtual void OnStateChanged() OVERRIDE;
content::NotificationRegistrar registrar_;
Profile* profile_;
ProfileSyncService* sync_service_;
// Timer to limit how much time STATUS_SYNCING is allowed.
base::OneShotTimer<AppSyncUIState> max_syncing_status_timer_;
Status status_;
ObserverList<AppSyncUIStateObserver> observers_;
DISALLOW_COPY_AND_ASSIGN(AppSyncUIState);
};
#endif // CHROME_BROWSER_UI_ASH_APP_SYNC_UI_STATE_H_
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