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// Copyright 2017 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_SHELF_LOGIN_SHELF_VIEW_H_
#define ASH_SHELF_LOGIN_SHELF_VIEW_H_
#include "ash/ash_export.h"
#include "ash/lock_screen_action/lock_screen_action_background_observer.h"
#include "ash/shutdown_controller.h"
#include "ash/tray_action/tray_action_observer.h"
#include "base/scoped_observer.h"
#include "ui/views/controls/button/button.h"
#include "ui/views/view.h"
namespace gfx {
class ImageSkia;
}
namespace session_manager {
enum class SessionState;
}
namespace ash {
class LockScreenActionBackgroundController;
enum class LockScreenActionBackgroundState;
class TrayAction;
// LoginShelfView contains the shelf buttons visible outside of an active user
// session. ShelfView and LoginShelfView should never be shown together.
class ASH_EXPORT LoginShelfView : public views::View,
public views::ButtonListener,
public TrayActionObserver,
public LockScreenActionBackgroundObserver,
public ShutdownController::Observer {
public:
enum ButtonId {
kShutdown = 1, // Shut down the device.
kRestart, // Restart the device.
kSignOut, // Sign out the active user session.
kCloseNote, // Close the lock screen note.
kCancel, // Cancel multiple user sign-in.
};
explicit LoginShelfView(
LockScreenActionBackgroundController* lock_screen_action_background);
~LoginShelfView() override;
// ShelfWidget observes SessionController for higher-level UI changes and
// then notifies LoginShelfView to update its own UI.
void UpdateAfterSessionStateChange(session_manager::SessionState state);
// views::View:
void OnFocus() override;
void AboutToRequestFocusFromTabTraversal(bool reverse) override;
// views::ButtonListener:
void ButtonPressed(views::Button* sender, const ui::Event& event) override;
protected:
// TrayActionObserver:
void OnLockScreenNoteStateChanged(mojom::TrayActionState state) override;
// LockScreenActionBackgroundObserver:
void OnLockScreenActionBackgroundStateChanged(
LockScreenActionBackgroundState state) override;
// ShutdownController::Observer:
void OnShutdownPolicyChanged(bool reboot_on_shutdown) override;
private:
bool LockScreenActionBackgroundAnimating() const;
// Updates the visibility of buttons based on state changes, e.g. shutdown
// policy updates, session state changes etc.
void UpdateUi();
LockScreenActionBackgroundController* lock_screen_action_background_;
ScopedObserver<TrayAction, TrayActionObserver> tray_action_observer_;
ScopedObserver<LockScreenActionBackgroundController,
LockScreenActionBackgroundObserver>
lock_screen_action_background_observer_;
ScopedObserver<ShutdownController, ShutdownController::Observer>
shutdown_controller_observer_;
DISALLOW_COPY_AND_ASSIGN(LoginShelfView);
};
} // namespace ash
#endif // ASH_SHELF_LOGIN_SHELF_VIEW_H_