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      1 /*
      2  * Copyright (C) 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 com.android.settings.fingerprint;
     18 
     19 import android.content.Context;
     20 import android.content.Intent;
     21 import android.hardware.fingerprint.Fingerprint;
     22 import android.hardware.fingerprint.FingerprintManager;
     23 import android.os.UserHandle;
     24 import android.os.UserManager;
     25 import android.support.v7.preference.Preference;
     26 
     27 import com.android.internal.widget.LockPatternUtils;
     28 import com.android.settings.R;
     29 import com.android.settings.Utils;
     30 import com.android.settings.core.BasePreferenceController;
     31 import com.android.settings.overlay.FeatureFactory;
     32 
     33 import java.util.List;
     34 
     35 public class FingerprintStatusPreferenceController extends BasePreferenceController {
     36 
     37     private static final String KEY_FINGERPRINT_SETTINGS = "fingerprint_settings";
     38 
     39     protected final FingerprintManager mFingerprintManager;
     40     protected final UserManager mUm;
     41     protected final LockPatternUtils mLockPatternUtils;
     42 
     43     protected final int mUserId = UserHandle.myUserId();
     44     protected final int mProfileChallengeUserId;
     45 
     46     public FingerprintStatusPreferenceController(Context context) {
     47         this(context, KEY_FINGERPRINT_SETTINGS);
     48     }
     49 
     50     public FingerprintStatusPreferenceController(Context context, String key) {
     51         super(context, key);
     52         mFingerprintManager = Utils.getFingerprintManagerOrNull(context);
     53         mUm = (UserManager) context.getSystemService(Context.USER_SERVICE);
     54         mLockPatternUtils = FeatureFactory.getFactory(context)
     55                 .getSecurityFeatureProvider()
     56                 .getLockPatternUtils(context);
     57         mProfileChallengeUserId = Utils.getManagedProfileId(mUm, mUserId);
     58     }
     59 
     60     @Override
     61     public int getAvailabilityStatus() {
     62         if (mFingerprintManager == null || !mFingerprintManager.isHardwareDetected()) {
     63             return UNSUPPORTED_ON_DEVICE;
     64         }
     65         if (isUserSupported()) {
     66             return AVAILABLE;
     67         } else {
     68             return DISABLED_FOR_USER;
     69         }
     70     }
     71 
     72     @Override
     73     public void updateState(Preference preference) {
     74         if (!isAvailable()) {
     75             if (preference != null) {
     76                 preference.setVisible(false);
     77             }
     78             return;
     79         } else {
     80             preference.setVisible(true);
     81         }
     82         final int userId = getUserId();
     83         final List<Fingerprint> items = mFingerprintManager.getEnrolledFingerprints(userId);
     84         final int fingerprintCount = items != null ? items.size() : 0;
     85         final String clazz;
     86         if (fingerprintCount > 0) {
     87             preference.setSummary(mContext.getResources().getQuantityString(
     88                     R.plurals.security_settings_fingerprint_preference_summary,
     89                     fingerprintCount, fingerprintCount));
     90             clazz = FingerprintSettings.class.getName();
     91         } else {
     92             preference.setSummary(
     93                     R.string.security_settings_fingerprint_preference_summary_none);
     94             clazz = FingerprintEnrollIntroduction.class.getName();
     95         }
     96         preference.setOnPreferenceClickListener(target -> {
     97             final Context context = target.getContext();
     98             final UserManager userManager = UserManager.get(context);
     99             if (Utils.startQuietModeDialogIfNecessary(context, userManager,
    100                     userId)) {
    101                 return false;
    102             }
    103             Intent intent = new Intent();
    104             intent.setClassName("com.android.settings", clazz);
    105             intent.putExtra(Intent.EXTRA_USER_ID, userId);
    106             context.startActivity(intent);
    107             return true;
    108         });
    109     }
    110 
    111     protected int getUserId() {
    112         return mUserId;
    113     }
    114 
    115     protected boolean isUserSupported() {
    116         return true;
    117     }
    118 }
    119