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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_SYNC_FILE_SYSTEM_SYNC_FILE_SYSTEM_SERVICE_H_
#define CHROME_BROWSER_SYNC_FILE_SYSTEM_SYNC_FILE_SYSTEM_SERVICE_H_
#include <set>
#include <string>
#include "base/basictypes.h"
#include "base/callback_forward.h"
#include "base/memory/scoped_ptr.h"
#include "base/memory/weak_ptr.h"
#include "base/observer_list.h"
#include "base/timer/timer.h"
#include "chrome/browser/sync/profile_sync_service_observer.h"
#include "chrome/browser/sync_file_system/conflict_resolution_policy.h"
#include "chrome/browser/sync_file_system/file_status_observer.h"
#include "chrome/browser/sync_file_system/local_file_sync_service.h"
#include "chrome/browser/sync_file_system/remote_file_sync_service.h"
#include "chrome/browser/sync_file_system/sync_service_state.h"
#include "components/browser_context_keyed_service/browser_context_keyed_service.h"
#include "content/public/browser/notification_observer.h"
#include "content/public/browser/notification_registrar.h"
#include "url/gurl.h"
#include "webkit/browser/fileapi/syncable/sync_callbacks.h"
class ProfileSyncServiceBase;
namespace fileapi {
class FileSystemContext;
}
namespace sync_file_system {
class SyncEventObserver;
class SyncFileSystemService
: public BrowserContextKeyedService,
public ProfileSyncServiceObserver,
public LocalFileSyncService::Observer,
public RemoteFileSyncService::Observer,
public FileStatusObserver,
public content::NotificationObserver,
public base::SupportsWeakPtr<SyncFileSystemService> {
public:
// BrowserContextKeyedService overrides.
virtual void Shutdown() OVERRIDE;
void InitializeForApp(
fileapi::FileSystemContext* file_system_context,
const GURL& app_origin,
const SyncStatusCallback& callback);
SyncServiceState GetSyncServiceState();
void GetExtensionStatusMap(std::map<GURL, std::string>* status_map);
void GetFileMetadataMap(
RemoteFileSyncService::OriginFileMetadataMap* metadata_map,
size_t* num_results,
const SyncStatusCallback& callback);
// Returns the file |url|'s sync status.
void GetFileSyncStatus(
const fileapi::FileSystemURL& url,
const SyncFileStatusCallback& callback);
void AddSyncEventObserver(SyncEventObserver* observer);
void RemoveSyncEventObserver(SyncEventObserver* observer);
ConflictResolutionPolicy GetConflictResolutionPolicy() const;
SyncStatusCode SetConflictResolutionPolicy(ConflictResolutionPolicy policy);
private:
friend class SyncFileSystemServiceFactory;
friend class SyncFileSystemServiceTest;
friend struct base::DefaultDeleter<SyncFileSystemService>;
explicit SyncFileSystemService(Profile* profile);
virtual ~SyncFileSystemService();
void Initialize(scoped_ptr<LocalFileSyncService> local_file_service,
scoped_ptr<RemoteFileSyncService> remote_file_service);
// Callbacks for InitializeForApp.
void DidInitializeFileSystem(const GURL& app_origin,
const SyncStatusCallback& callback,
SyncStatusCode status);
void DidRegisterOrigin(const GURL& app_origin,
const SyncStatusCallback& callback,
SyncStatusCode status);
// Overrides sync_enabled_ setting. This should be called only by tests.
void SetSyncEnabledForTesting(bool enabled);
// Called when following observer methods are called:
// - OnLocalChangeAvailable()
// - OnRemoteChangeAvailable()
// - OnRemoteServiceStateUpdated()
void MaybeStartSync();
// Called from MaybeStartSync(). (Should not be called from others)
void StartRemoteSync();
void StartLocalSync();
// Callbacks for remote/local sync.
void DidProcessRemoteChange(SyncStatusCode status,
const fileapi::FileSystemURL& url);
void DidProcessLocalChange(SyncStatusCode status,
const fileapi::FileSystemURL& url);
void DidGetLocalChangeStatus(const SyncFileStatusCallback& callback,
SyncStatusCode status,
bool has_pending_local_changes);
void OnSyncEnabledForRemoteSync();
// RemoteFileSyncService::Observer overrides.
virtual void OnLocalChangeAvailable(int64 pending_changes) OVERRIDE;
// LocalFileSyncService::Observer overrides.
virtual void OnRemoteChangeQueueUpdated(int64 pending_changes) OVERRIDE;
virtual void OnRemoteServiceStateUpdated(
RemoteServiceState state,
const std::string& description) OVERRIDE;
// content::NotificationObserver implementation.
virtual void Observe(int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) OVERRIDE;
void HandleExtensionInstalled(const content::NotificationDetails& details);
void HandleExtensionUnloaded(int type,
const content::NotificationDetails& details);
void HandleExtensionEnabled(int type,
const content::NotificationDetails& details);
// ProfileSyncServiceObserver:
virtual void OnStateChanged() OVERRIDE;
// SyncFileStatusObserver:
virtual void OnFileStatusChanged(
const fileapi::FileSystemURL& url,
SyncFileStatus sync_status,
SyncAction action_taken,
SyncDirection direction) OVERRIDE;
// Check the profile's sync preference settings and call
// remote_file_service_->SetSyncEnabled() to update the status.
// |profile_sync_service| must be non-null.
void UpdateSyncEnabledStatus(ProfileSyncServiceBase* profile_sync_service);
Profile* profile_;
content::NotificationRegistrar registrar_;
int64 pending_local_changes_;
int64 pending_remote_changes_;
scoped_ptr<LocalFileSyncService> local_file_service_;
scoped_ptr<RemoteFileSyncService> remote_file_service_;
bool local_sync_running_;
bool remote_sync_running_;
// If a remote sync is returned with SYNC_STATUS_FILE_BUSY we mark this
// true and register the busy file URL to wait for a sync enabled event
// for the URL. When this flag is set to true it won't be worth trying
// another remote sync.
bool is_waiting_remote_sync_enabled_;
// Indicates if sync is currently enabled or not.
bool sync_enabled_;
base::OneShotTimer<SyncFileSystemService> sync_retry_timer_;
ObserverList<SyncEventObserver> observers_;
DISALLOW_COPY_AND_ASSIGN(SyncFileSystemService);
};
} // namespace sync_file_system
#endif // CHROME_BROWSER_SYNC_FILE_SYSTEM_SYNC_FILE_SYSTEM_SERVICE_H_
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