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      1 /*
      2  * Copyright 2018 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 android.security;
     18 
     19 import android.annotation.NonNull;
     20 
     21 /**
     22  * Callback class used when signaling that a prompt is no longer being presented.
     23  */
     24 public abstract class ConfirmationCallback {
     25     /**
     26      * Called when the requested prompt was accepted by the user.
     27      *
     28      * The format of 'dataThatWasConfirmed' parameter is a <a href="http://cbor.io/">CBOR</a>
     29      * encoded map (type 5) with (at least) the keys <strong>prompt</strong> and
     30      * <strong>extra</strong>. The keys are encoded as CBOR text string (type 3). The value of
     31      * promptText is encoded as CBOR text string (type 3), and the value of extraData is encoded as
     32      * CBOR byte string (type 2). Other keys may be added in the future.
     33      *
     34      * @param dataThatWasConfirmed the data that was confirmed, see above for the format.
     35      */
     36     public void onConfirmed(@NonNull byte[] dataThatWasConfirmed) {}
     37 
     38     /**
     39      * Called when the requested prompt was dismissed (not accepted) by the user.
     40      */
     41     public void onDismissed() {}
     42 
     43     /**
     44      * Called when the requested prompt was dismissed by the application.
     45      */
     46     public void onCanceled() {}
     47 
     48     /**
     49      * Called when the requested prompt was dismissed because of a low-level error.
     50      *
     51      * @param e a throwable representing the error.
     52      */
     53     public void onError(Throwable e) {}
     54 }
     55