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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.screenlock;
     18 
     19 import android.app.admin.DevicePolicyManager;
     20 import android.content.Context;
     21 import android.support.v7.preference.Preference;
     22 import android.support.v7.preference.TwoStatePreference;
     23 import android.text.TextUtils;
     24 
     25 import com.android.internal.widget.LockPatternUtils;
     26 import com.android.settings.R;
     27 import com.android.settings.core.PreferenceControllerMixin;
     28 import com.android.settings.overlay.FeatureFactory;
     29 import com.android.settings.security.trustagent.TrustAgentManager;
     30 import com.android.settingslib.core.AbstractPreferenceController;
     31 
     32 public class PowerButtonInstantLockPreferenceController extends AbstractPreferenceController
     33         implements PreferenceControllerMixin, Preference.OnPreferenceChangeListener {
     34 
     35     private static final String KEY_POWER_INSTANTLY_LOCKS = "power_button_instantly_locks";
     36 
     37     private final int mUserId;
     38     private final LockPatternUtils mLockPatternUtils;
     39     private final TrustAgentManager mTrustAgentManager;
     40 
     41     public PowerButtonInstantLockPreferenceController(Context context, int userId,
     42             LockPatternUtils lockPatternUtils) {
     43         super(context);
     44         mUserId = userId;
     45         mLockPatternUtils = lockPatternUtils;
     46         mTrustAgentManager = FeatureFactory.getFactory(context)
     47                 .getSecurityFeatureProvider().getTrustAgentManager();
     48     }
     49 
     50     @Override
     51     public boolean isAvailable() {
     52         if (!mLockPatternUtils.isSecure(mUserId)) {
     53             return false;
     54         }
     55         switch (mLockPatternUtils.getKeyguardStoredPasswordQuality(mUserId)) {
     56             case DevicePolicyManager.PASSWORD_QUALITY_SOMETHING:
     57             case DevicePolicyManager.PASSWORD_QUALITY_NUMERIC:
     58             case DevicePolicyManager.PASSWORD_QUALITY_NUMERIC_COMPLEX:
     59             case DevicePolicyManager.PASSWORD_QUALITY_ALPHABETIC:
     60             case DevicePolicyManager.PASSWORD_QUALITY_ALPHANUMERIC:
     61             case DevicePolicyManager.PASSWORD_QUALITY_COMPLEX:
     62             case DevicePolicyManager.PASSWORD_QUALITY_MANAGED:
     63                 return true;
     64             default:
     65                 return false;
     66         }
     67     }
     68 
     69     @Override
     70     public void updateState(Preference preference) {
     71         ((TwoStatePreference) preference).setChecked(
     72                 mLockPatternUtils.getPowerButtonInstantlyLocks(mUserId));
     73         final CharSequence trustAgentLabel = mTrustAgentManager.getActiveTrustAgentLabel(
     74                 mContext, mLockPatternUtils);
     75         if (!TextUtils.isEmpty(trustAgentLabel)) {
     76             preference.setSummary(mContext.getString(
     77                     R.string.lockpattern_settings_power_button_instantly_locks_summary,
     78                     trustAgentLabel));
     79         } else {
     80             preference.setSummary(R.string.summary_placeholder);
     81         }
     82     }
     83 
     84     @Override
     85     public String getPreferenceKey() {
     86         return KEY_POWER_INSTANTLY_LOCKS;
     87     }
     88 
     89     @Override
     90     public boolean onPreferenceChange(Preference preference, Object newValue) {
     91         mLockPatternUtils.setPowerButtonInstantlyLocks((Boolean) newValue, mUserId);
     92         return true;
     93     }
     94 }
     95