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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_CHROMEOS_EXTENSIONS_FILE_MANAGER_EVENT_ROUTER_H_
#define CHROME_BROWSER_CHROMEOS_EXTENSIONS_FILE_MANAGER_EVENT_ROUTER_H_
#include <map>
#include <string>
#include "base/basictypes.h"
#include "base/compiler_specific.h"
#include "base/files/file_path_watcher.h"
#include "base/memory/scoped_ptr.h"
#include "chrome/browser/chromeos/drive/drive_integration_service.h"
#include "chrome/browser/chromeos/drive/file_system_observer.h"
#include "chrome/browser/chromeos/drive/job_list.h"
#include "chrome/browser/chromeos/drive/sync_client.h"
#include "chrome/browser/chromeos/file_manager/file_watcher.h"
#include "chrome/browser/chromeos/file_manager/volume_manager_observer.h"
#include "chrome/browser/drive/drive_service_interface.h"
#include "chrome/browser/ui/ash/multi_user/multi_user_window_manager.h"
#include "chrome/common/extensions/api/file_browser_private.h"
#include "chromeos/disks/disk_mount_manager.h"
#include "chromeos/network/network_state_handler_observer.h"
#include "content/public/browser/notification_observer.h"
#include "content/public/browser/notification_registrar.h"
#include "webkit/browser/fileapi/file_system_operation.h"
class PrefChangeRegistrar;
class Profile;
namespace base {
class ListValue;
}
namespace chromeos {
class NetworkState;
}
namespace file_manager {
// Monitors changes in disk mounts, network connection state and preferences
// affecting File Manager. Dispatches appropriate File Browser events.
class EventRouter
: public chromeos::NetworkStateHandlerObserver,
public drive::FileSystemObserver,
public drive::JobListObserver,
public drive::DriveServiceObserver,
public VolumeManagerObserver,
public content::NotificationObserver,
public chrome::MultiUserWindowManager::Observer {
public:
explicit EventRouter(Profile* profile);
virtual ~EventRouter();
void Shutdown();
// Starts observing file system change events.
void ObserveEvents();
typedef base::Callback<void(bool success)> BoolCallback;
// Adds a file watch at |local_path|, associated with |virtual_path|, for
// an extension with |extension_id|.
//
// |callback| will be called with true on success, or false on failure.
// |callback| must not be null.
void AddFileWatch(const base::FilePath& local_path,
const base::FilePath& virtual_path,
const std::string& extension_id,
const BoolCallback& callback);
// Removes a file watch at |local_path| for an extension with |extension_id|.
void RemoveFileWatch(const base::FilePath& local_path,
const std::string& extension_id);
// Called when a copy task is completed.
void OnCopyCompleted(
int copy_id, const GURL& source_url, const GURL& destination_url,
base::File::Error error);
// Called when a copy task progress is updated.
void OnCopyProgress(int copy_id,
fileapi::FileSystemOperation::CopyProgressType type,
const GURL& source_url,
const GURL& destination_url,
int64 size);
// Register observer to the multi user window manager.
void RegisterMultiUserWindowManagerObserver();
// chromeos::NetworkStateHandlerObserver overrides.
virtual void DefaultNetworkChanged(
const chromeos::NetworkState* network) OVERRIDE;
// drive::JobListObserver overrides.
virtual void OnJobAdded(const drive::JobInfo& job_info) OVERRIDE;
virtual void OnJobUpdated(const drive::JobInfo& job_info) OVERRIDE;
virtual void OnJobDone(const drive::JobInfo& job_info,
drive::FileError error) OVERRIDE;
// drive::DriveServiceObserver overrides.
virtual void OnRefreshTokenInvalid() OVERRIDE;
// drive::FileSystemObserver overrides.
virtual void OnDirectoryChanged(const base::FilePath& drive_path) OVERRIDE;
virtual void OnDriveSyncError(drive::file_system::DriveSyncErrorType type,
const base::FilePath& drive_path) OVERRIDE;
// VolumeManagerObserver overrides.
virtual void OnDiskAdded(
const chromeos::disks::DiskMountManager::Disk& disk,
bool mounting) OVERRIDE;
virtual void OnDiskRemoved(
const chromeos::disks::DiskMountManager::Disk& disk) OVERRIDE;
virtual void OnDeviceAdded(const std::string& device_path) OVERRIDE;
virtual void OnDeviceRemoved(const std::string& device_path) OVERRIDE;
virtual void OnVolumeMounted(chromeos::MountError error_code,
const VolumeInfo& volume_info,
bool is_remounting) OVERRIDE;
virtual void OnVolumeUnmounted(chromeos::MountError error_code,
const VolumeInfo& volume_info) OVERRIDE;
virtual void OnFormatStarted(
const std::string& device_path, bool success) OVERRIDE;
virtual void OnFormatCompleted(
const std::string& device_path, bool success) OVERRIDE;
// content::NotificationObserver overrides.
virtual void Observe(int type,
const content::NotificationSource& source,
const content::NotificationDetails& details) OVERRIDE;
// chrome::MultiUserWindowManager::Observer overrides:
virtual void OnOwnerEntryChanged(aura::Window* window) OVERRIDE;
private:
typedef std::map<base::FilePath, FileWatcher*> WatcherMap;
// Called when prefs related to file manager change.
void OnFileManagerPrefsChanged();
// Process file watch notifications.
void HandleFileWatchNotification(const base::FilePath& path,
bool got_error);
// Sends directory change event.
void DispatchDirectoryChangeEvent(
const base::FilePath& path,
bool error,
const std::vector<std::string>& extension_ids);
// If needed, opens a file manager window for the removable device mounted at
// |mount_path|. Disk.mount_path() is empty, since it is being filled out
// after calling notifying observers by DiskMountManager.
void ShowRemovableDeviceInFileManager(const base::FilePath& mount_path);
// Dispatches an onDeviceChanged event containing |type| and |path| to
// extensions.
void DispatchDeviceEvent(
extensions::api::file_browser_private::DeviceEventType type,
const std::string& path);
// Sends onFileTranferUpdated to extensions if needed. If |always| is true,
// it sends the event always. Otherwise, it sends the event if enough time has
// passed from the previous event so as not to make extension busy.
void SendDriveFileTransferEvent(bool always);
// Manages the list of currently active Drive file transfer jobs.
struct DriveJobInfoWithStatus {
DriveJobInfoWithStatus();
DriveJobInfoWithStatus(const drive::JobInfo& info,
const std::string& status);
drive::JobInfo job_info;
std::string status;
};
std::map<drive::JobID, DriveJobInfoWithStatus> drive_jobs_;
base::Time last_file_transfer_event_;
WatcherMap file_watchers_;
scoped_ptr<PrefChangeRegistrar> pref_change_registrar_;
Profile* profile_;
content::NotificationRegistrar notification_registrar_;
bool multi_user_window_manager_observer_registered_;
// Note: This should remain the last member so it'll be destroyed and
// invalidate the weak pointers before any other members are destroyed.
base::WeakPtrFactory<EventRouter> weak_factory_;
DISALLOW_COPY_AND_ASSIGN(EventRouter);
};
} // namespace file_manager
#endif // CHROME_BROWSER_CHROMEOS_EXTENSIONS_FILE_MANAGER_EVENT_ROUTER_H_
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