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// Copyright 2018 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 ASH_MULTI_DEVICE_SETUP_MULTI_DEVICE_NOTIFICATION_PRESENTER_H_
#define ASH_MULTI_DEVICE_SETUP_MULTI_DEVICE_NOTIFICATION_PRESENTER_H_
#include <memory>
#include <string>
#include "ash/ash_export.h"
#include "ash/session/session_observer.h"
#include "base/macros.h"
#include "base/memory/weak_ptr.h"
#include "base/strings/string16.h"
#include "chromeos/services/multidevice_setup/public/mojom/multidevice_setup.mojom.h"
#include "mojo/public/cpp/bindings/binding.h"
namespace message_center {
class MessageCenter;
class Notification;
} // namespace message_center
namespace service_manager {
class Connector;
} // namespace service_manager
namespace ash {
// Presents notifications necessary for MultiDevice setup flow. It observes the
// MultiDeviceSetup mojo service to show a notification when
// (1) a potential host is found for someone who has not gone through the setup
// flow before,
// (2) the host has switched for someone who has, or
// (3) a new Chromebook has been added to an account for someone who has.
//
// The behavior caused by clicking a notification depends its content as
// described above:
// (1) triggers the setup UI to appear to prompt setup flow and
// (2) & (3) open the Connected Devices subpage in Settings.
//
// Note that if one notification is showing and another one is triggered, the
// old text is replaced (if it's different) and the notification pops up again.
class ASH_EXPORT MultiDeviceNotificationPresenter
: public chromeos::multidevice_setup::mojom::AccountStatusChangeDelegate,
public SessionObserver {
public:
MultiDeviceNotificationPresenter(
message_center::MessageCenter* message_center,
service_manager::Connector* connector);
~MultiDeviceNotificationPresenter() override;
// Removes the notification created by NotifyPotentialHostExists() or does
// nothing if that notification is not currently displayed.
void RemoveMultiDeviceSetupNotification();
protected:
// multidevice_setup::mojom::AccountStatusChangeDelegate:
void OnPotentialHostExistsForNewUser() override;
void OnNoLongerNewUser() override;
void OnConnectedHostSwitchedForExistingUser(
const std::string& new_host_device_name) override;
void OnNewChromebookAddedForExistingUser(
const std::string& new_host_device_name) override;
// SessionObserver:
void OnUserSessionAdded(const AccountId& account_id) override;
void OnSessionStateChanged(session_manager::SessionState state) override;
private:
friend class MultiDeviceNotificationPresenterTest;
// MultiDevice setup notification ID.
static const char kNotificationId[];
// These methods are delegated to a nested class to make them easier to stub
// in unit tests. This way they can all be stubbed simultaneously by building
// a test delegate class deriving from OpenUiDelegate.
class OpenUiDelegate {
public:
virtual ~OpenUiDelegate();
virtual void OpenMultiDeviceSetupUi();
virtual void OpenConnectedDevicesSettings();
};
// Represents each possible MultiDevice setup notification that the setup flow
// can show with a "none" option for the general state with no notification
// present.
enum class Status {
kNoNotificationVisible,
kNewUserNotificationVisible,
kExistingUserHostSwitchedNotificationVisible,
kExistingUserNewChromebookNotificationVisible
};
// Reflects MultiDeviceSetupNotification enum in enums.xml. Do not
// rearrange.
enum NotificationType {
kNotificationTypeNewUserPotentialHostExists = 0,
kNotificationTypeExistingUserHostSwitched = 1,
kNotificationTypeExistingUserNewChromebookAdded = 2,
kNotificationTypeMax
};
static NotificationType GetMetricValueForNotification(
Status notification_status);
static std::string GetNotificationDescriptionForLogging(
Status notification_status);
void ObserveMultiDeviceSetupIfPossible();
void OnNotificationClicked();
void ShowNotification(const Status notification_status,
const base::string16& title,
const base::string16& message);
std::unique_ptr<message_center::Notification> CreateNotification(
const base::string16& title,
const base::string16& message);
void FlushForTesting();
message_center::MessageCenter* message_center_;
service_manager::Connector* connector_;
// Notification currently showing or
// Status::kNoNotificationVisible if there isn't one.
Status notification_status_ = Status::kNoNotificationVisible;
chromeos::multidevice_setup::mojom::MultiDeviceSetupPtr
multidevice_setup_ptr_;
mojo::Binding<chromeos::multidevice_setup::mojom::AccountStatusChangeDelegate>
binding_;
std::unique_ptr<OpenUiDelegate> open_ui_delegate_;
base::WeakPtrFactory<MultiDeviceNotificationPresenter> weak_ptr_factory_;
DISALLOW_COPY_AND_ASSIGN(MultiDeviceNotificationPresenter);
};
} // namespace ash
#endif // ASH_MULTI_DEVICE_SETUP_MULTI_DEVICE_NOTIFICATION_PRESENTER_H_