chromeos: Move files in //ash/common to //ash, part 3

ash/common/session/session_state_delegate.h

-// Copyright 2015 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_COMMON_SESSION_SESSION_STATE_DELEGATE_H_
-#define ASH_COMMON_SESSION_SESSION_STATE_DELEGATE_H_
-
-#include "ash/ash_export.h"
-#include "ash/public/cpp/session_types.h"
-#include "components/session_manager/session_manager_types.h"
-
-class AccountId;
-
-namespace gfx {
-class ImageSkia;
-}
-
-namespace user_manager {
-class UserInfo;
-}
-
-namespace ash {
-
-class SessionStateObserver;
-class WmWindow;
-
-// Delegate for checking and modifying the session state.
-// DEPRECATED in favor of SessionController/SessionControllerClient for mash.
-// TODO(xiyuan): Remove this when SessionController etc are ready.
-class ASH_EXPORT SessionStateDelegate {
- public:
-  virtual ~SessionStateDelegate() {}
-
-  // Returns the maximum possible number of logged in users.
-  virtual int GetMaximumNumberOfLoggedInUsers() const = 0;
-
-  // Returns the number of signed in users. If 0 is returned, there is either
-  // no session in progress or no active user.
-  virtual int NumberOfLoggedInUsers() const = 0;
-
-  // Gets the policy of adding a user session to ash.
-  virtual AddUserSessionPolicy GetAddUserSessionPolicy() const;
-
-  // Returns |true| if the session has been fully started for the active user.
-  // When a user becomes active, the profile and browser UI are not immediately
-  // available. Only once this method starts returning |true| is the browser
-  // startup complete and both profile and UI are fully available.
-  virtual bool IsActiveUserSessionStarted() const = 0;
-
-  // Returns true if the screen can be locked.
-  virtual bool CanLockScreen() const = 0;
-
-  // Returns true if the screen is currently locked.
-  virtual bool IsScreenLocked() const = 0;
-
-  // Returns true if the screen should be locked automatically when the screen
-  // is turned off or the system is suspended.
-  virtual bool ShouldLockScreenAutomatically() const = 0;
-
-  // Locks the screen. The locking happens asynchronously.
-  virtual void LockScreen() = 0;
-
-  // Unlocks the screen.
-  virtual void UnlockScreen() = 0;
-
-  // Returns |true| if user session blocked by some overlying UI. It can be
-  // login screen, lock screen or screen for adding users into multi-profile
-  // session.
-  virtual bool IsUserSessionBlocked() const = 0;
-
-  // Returns current session state.
-  virtual session_manager::SessionState GetSessionState() const = 0;
-
-  // Gets the user info for the user with the given |index|. See session_types.h
-  // for a description of UserIndex.
-  // Note that |index| can at maximum be |NumberOfLoggedInUsers() - 1|.
-  virtual const user_manager::UserInfo* GetUserInfo(UserIndex index) const = 0;
-
-  // Whether or not the window's title should show the avatar.
-  virtual bool ShouldShowAvatar(WmWindow* window) const = 0;
-
-  // Returns the avatar image for the specified window.
-  virtual gfx::ImageSkia GetAvatarImageForWindow(WmWindow* window) const = 0;
-
-  // Switches to another active user with |account_id|
-  // (if that user has already signed in).
-  virtual void SwitchActiveUser(const AccountId& account_id) = 0;
-
-  // Switches the active user to the next or previous user, with the same
-  // ordering as GetLoggedInUsers.
-  virtual void CycleActiveUser(CycleUserDirection direction) = 0;
-
-  // Returns true if primary user policy does not forbid multiple signin.
-  virtual bool IsMultiProfileAllowedByPrimaryUserPolicy() const = 0;
-
-  // Adds or removes sessions state observer.
-  virtual void AddSessionStateObserver(SessionStateObserver* observer) = 0;
-  virtual void RemoveSessionStateObserver(SessionStateObserver* observer) = 0;
-
-  bool IsInSecondaryLoginScreen() const;
-};
-
-}  // namespace ash
-
-#endif  // ASH_COMMON_SESSION_SESSION_STATE_DELEGATE_H_