[Smart Lock] Extract the screenlock state to the proximity_auth component.

chrome/browser/signin/easy_unlock_screenlock_state_handler.h

 // Copyright 2014 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_SIGNIN_EASY_UNLOCK_SCREENLOCK_STATE_HANDLER_H_
 #define CHROME_BROWSER_SIGNIN_EASY_UNLOCK_SCREENLOCK_STATE_HANDLER_H_
 
 #include <string>
 
 #include "base/strings/string16.h"
 #include "components/proximity_auth/screenlock_bridge.h"
+#include "components/proximity_auth/screenlock_state.h"
 
 class PrefService;
 
 // Profile specific class responsible for updating screenlock UI for the user
 // associated with the profile when their Easy Unlock state changes.
 class EasyUnlockScreenlockStateHandler
     : public proximity_auth::ScreenlockBridge::Observer {
  public:
-  // Available Easy Unlock states.
-  enum State {
-    // Easy Unlock is not enabled, or the screen is not locked.
-    STATE_INACTIVE,
-    // Bluetooth is not on.
-    STATE_NO_BLUETOOTH,
-    // Easy Unlock is in process of turning on Bluetooth.
-    STATE_BLUETOOTH_CONNECTING,
-    // No phones eligible to unlock the device can be found.
-    STATE_NO_PHONE,
-    // A phone eligible to unlock the device is found, but cannot be
-    // authenticated.
-    STATE_PHONE_NOT_AUTHENTICATED,
-    // A phone eligible to unlock the device is found, but it's locked.
-    STATE_PHONE_LOCKED,
-    // A phone eligible to unlock the device is found, but does not have lock
-    // screen enabled.
-    STATE_PHONE_UNLOCKABLE,
-    // An Easy Unlock enabled phone is found, but it is not allowed to unlock
-    // the device because it does not support reporting it's lock screen state.
-    STATE_PHONE_UNSUPPORTED,
-    // A phone eligible to unlock the device is found, but its received signal
-    // strength is too low, i.e. the phone is roughly more than 30 feet away,
-    // and therefore is not allowed to unlock the device.
-    STATE_RSSI_TOO_LOW,
-    // A phone eligible to unlock the device is found, but the local device's
-    // transmission power is too high, indicating that the phone is (probably)
-    // more than 1 foot away, and therefore is not allowed to unlock the device.
-    STATE_TX_POWER_TOO_HIGH,
-    // A phone eligible to unlock the device is found; but (a) the phone is
-    // locked, and (b) the local device's transmission power is too high,
-    // indicating that the phone is (probably) more than 1 foot away, and
-    // therefore is not allowed to unlock the device.
-    STATE_PHONE_LOCKED_AND_TX_POWER_TOO_HIGH,
-    // The device can be unlocked using Easy Unlock.
-    STATE_AUTHENTICATED
-  };
-
   // Hard lock states.
   enum HardlockState {
     NO_HARDLOCK = 0,           // Hard lock is not enforced. This is default.
     USER_HARDLOCK = 1 << 0,    // Hard lock is requested by user.
     PAIRING_CHANGED = 1 << 1,  // Hard lock because pairing data is changed.
     NO_PAIRING = 1 << 2,       // Hard lock because there is no pairing data.
     LOGIN_FAILED = 1 << 3,     // Transient hard lock caused by login attempt
                                // failure. Reset when screen is unlocked.
     PAIRING_ADDED = 1 << 4,    // Similar to PAIRING_CHANGED when it happens
                                // on a new Chromebook.
@@ skipping 13 matching lines @@
   // Returns true if handler is not in INACTIVE state.
   bool IsActive() const;
 
   // Whether the handler is in state that is allowed just after auth failure
   // (i.e. the state that would cause auth failure rather than one caused by an
   // auth failure).
   bool InStateValidOnRemoteAuthFailure() const;
 
   // Changes internal state to |new_state| and updates the user's screenlock
   // accordingly.
-  void ChangeState(State new_state);
+  void ChangeState(proximity_auth::ScreenlockState new_state);
 
   // Updates the screenlock state.
   void SetHardlockState(HardlockState new_state);
 
   // Shows the hardlock UI if the hardlock_state_ is not NO_HARDLOCK.
   void MaybeShowHardlockUI();
 
   // Marks the current screenlock state as the one for trial Easy Unlock run.
   void SetTrialRun();
 
   // Records that the user clicked on the lock icon during the trial run
   // initiated by the Easy Unlock app.
   void RecordClickOnLockIcon();
 
-  State state() const { return state_; }
+  proximity_auth::ScreenlockState state() const { return state_; }
 
  private:
   // proximity_auth::ScreenlockBridge::Observer:
   void OnScreenDidLock(proximity_auth::ScreenlockBridge::LockHandler::ScreenType
                            screen_type) override;
   void OnScreenDidUnlock(
       proximity_auth::ScreenlockBridge::LockHandler::ScreenType screen_type)
       override;
   void OnFocusedUserChanged(const std::string& user_id) override;
 
   // Forces refresh of the Easy Unlock screenlock UI.
   void RefreshScreenlockState();
 
   void ShowHardlockUI();
 
   // Updates icon's tooltip options.
   void UpdateTooltipOptions(
       proximity_auth::ScreenlockBridge::UserPodCustomIconOptions* icon_options);
 
   // Gets the name to be used for the device. The name depends on the device
   // type (example values: Chromebook and Chromebox).
   base::string16 GetDeviceName();
 
   // Updates the screenlock auth type if it has to be changed.
   void UpdateScreenlockAuthType();
 
-  State state_;
+  proximity_auth::ScreenlockState state_;
   std::string user_email_;
   proximity_auth::ScreenlockBridge* screenlock_bridge_;
 
   // State of hardlock.
   HardlockState hardlock_state_;
   bool hardlock_ui_shown_;
 
   // Whether this is the trial Easy Unlock run. If this is the case, a
   // tutorial message should be shown and hard-locking be disabled. The trial
   // run should be set if the screen was locked by the Easy Unlock setup app.
   bool is_trial_run_;
 
   // Whether the user's phone was ever locked while on the current lock screen.
   bool did_see_locked_phone_;
 
   DISALLOW_COPY_AND_ASSIGN(EasyUnlockScreenlockStateHandler);
 };
 
 #endif  // CHROME_BROWSER_SIGNIN_EASY_UNLOCK_SCREENLOCK_STATE_HANDLER_H_