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      1 /*
      2  * Copyright (C) 2015 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.settings;
     18 
     19 import android.app.Fragment;
     20 import android.content.Intent;
     21 import android.os.Bundle;
     22 
     23 /**
     24  * An invisible retained fragment to track lock check result.
     25  */
     26 public class CredentialCheckResultTracker extends Fragment {
     27 
     28     private Listener mListener;
     29     private boolean mHasResult = false;
     30 
     31     private boolean mResultMatched;
     32     private Intent mResultData;
     33     private int mResultTimeoutMs;
     34     private int mResultEffectiveUserId;
     35 
     36     @Override
     37     public void onCreate(Bundle savedInstanceState) {
     38         super.onCreate(savedInstanceState);
     39         setRetainInstance(true);
     40     }
     41 
     42     public void setListener(Listener listener) {
     43         if (mListener == listener) {
     44             return;
     45         }
     46 
     47         mListener = listener;
     48         if (mListener != null && mHasResult) {
     49             mListener.onCredentialChecked(mResultMatched, mResultData, mResultTimeoutMs,
     50                     mResultEffectiveUserId, false /* newResult */);
     51         }
     52     }
     53 
     54     public void setResult(boolean matched, Intent intent, int timeoutMs, int effectiveUserId) {
     55         mResultMatched = matched;
     56         mResultData = intent;
     57         mResultTimeoutMs = timeoutMs;
     58         mResultEffectiveUserId = effectiveUserId;
     59 
     60         mHasResult = true;
     61         if (mListener != null) {
     62             mListener.onCredentialChecked(mResultMatched, mResultData, mResultTimeoutMs,
     63                     mResultEffectiveUserId, true /* newResult */);
     64             mHasResult = false;
     65         }
     66     }
     67 
     68     public void clearResult() {
     69         mHasResult = false;
     70         mResultMatched = false;
     71         mResultData = null;
     72         mResultTimeoutMs = 0;
     73         mResultEffectiveUserId = 0;
     74     }
     75 
     76     interface Listener {
     77         public void onCredentialChecked(boolean matched, Intent intent, int timeoutMs,
     78                 int effectiveUserId, boolean newResult);
     79     }
     80 }
     81