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      1 /*
      2  * Copyright (C) 2008 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.internal.policy.impl;
     18 
     19 import android.content.res.Configuration;
     20 
     21 /**
     22  * Within a keyguard, there may be several screens that need a callback
     23  * to the host keyguard view.
     24  */
     25 public interface KeyguardScreenCallback extends KeyguardViewCallback {
     26 
     27     /**
     28      * Transition to the lock screen.
     29      */
     30     void goToLockScreen();
     31 
     32     /**
     33      * Transition to the unlock screen.
     34      */
     35     void goToUnlockScreen();
     36 
     37     /**
     38      * The user reported that they forgot their pattern (or not, when they want to back out of the
     39      * forgot pattern screen).
     40      *
     41      * @param isForgotten True if the user hit the forgot pattern, false if they want to back out
     42      *        of the account screen.
     43      */
     44     void forgotPattern(boolean isForgotten);
     45 
     46     /**
     47      * @return Whether the keyguard requires some sort of PIN.
     48      */
     49     boolean isSecure();
     50 
     51     /**
     52      * @return Whether we are in a mode where we only want to verify the
     53      *   user can get past the keyguard.
     54      */
     55     boolean isVerifyUnlockOnly();
     56 
     57     /**
     58      * Stay on me, but recreate me (so I can use a different layout).
     59      */
     60     void recreateMe(Configuration config);
     61 
     62     /**
     63      * Take action to send an emergency call.
     64      */
     65     void takeEmergencyCallAction();
     66 
     67     /**
     68      * Report that the user had a failed attempt to unlock with password or pattern.
     69      */
     70     void reportFailedUnlockAttempt();
     71 
     72     /**
     73      * Report that the user successfully entered their password or pattern.
     74      */
     75     void reportSuccessfulUnlockAttempt();
     76 
     77     /**
     78      * Report whether we there's another way to unlock the device.
     79      * @return true
     80      */
     81     boolean doesFallbackUnlockScreenExist();
     82 }
     83