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      1 /*
      2  * Copyright (C) 2017 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.security;
     18 
     19 import android.content.Context;
     20 import android.os.UserManager;
     21 import android.support.v7.preference.Preference;
     22 import android.text.TextUtils;
     23 
     24 import com.android.internal.widget.LockPatternUtils;
     25 import com.android.settings.R;
     26 import com.android.settings.core.BasePreferenceController;
     27 
     28 public class EncryptionStatusPreferenceController extends BasePreferenceController {
     29 
     30 
     31     static final String PREF_KEY_ENCRYPTION_DETAIL_PAGE =
     32             "encryption_and_credentials_encryption_status";
     33     static final String PREF_KEY_ENCRYPTION_SECURITY_PAGE = "encryption_and_credential";
     34 
     35     private final UserManager mUserManager;
     36 
     37     public EncryptionStatusPreferenceController(Context context, String key) {
     38         super(context, key);
     39         mUserManager = (UserManager) context.getSystemService(Context.USER_SERVICE);
     40     }
     41 
     42     @Override
     43     public int getAvailabilityStatus() {
     44         if (TextUtils.equals(getPreferenceKey(), PREF_KEY_ENCRYPTION_DETAIL_PAGE) &&
     45                 !mContext.getResources().getBoolean(
     46                 R.bool.config_show_encryption_and_credentials_encryption_status)) {
     47             return UNSUPPORTED_ON_DEVICE;
     48         }
     49 
     50         return mUserManager.isAdminUser() ? AVAILABLE : DISABLED_FOR_USER;
     51     }
     52 
     53     @Override
     54     public void updateState(Preference preference) {
     55         final boolean encryptionEnabled = LockPatternUtils.isDeviceEncryptionEnabled();
     56         if (encryptionEnabled) {
     57             if (TextUtils.equals(getPreferenceKey(), PREF_KEY_ENCRYPTION_DETAIL_PAGE)) {
     58                 preference.setFragment(null);
     59             }
     60             preference.setSummary(R.string.crypt_keeper_encrypted_summary);
     61         } else {
     62             if (TextUtils.equals(getPreferenceKey(), PREF_KEY_ENCRYPTION_DETAIL_PAGE)) {
     63                 preference.setFragment(CryptKeeperSettings.class.getName());
     64             }
     65             preference.setSummary(R.string.decryption_settings_summary);
     66         }
     67 
     68     }
     69 }
     70