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      1 /*
      2  * Copyright (C) 2018 The Android Open Source Project
      3  * Licensed under the Apache License, Version 2.0 (the "License");
      4  * you may not use this file except in compliance with the License.
      5  * You may obtain a copy of the License at
      6  *
      7  *      http://www.apache.org/licenses/LICENSE-2.0
      8  *
      9  * Unless required by applicable law or agreed to in writing, software
     10  * distributed under the License is distributed on an "AS IS" BASIS,
     11  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     12  * See the License for the specific language governing permissions and
     13  * limitations under the License.
     14  *
     15  *
     16  */
     17 
     18 package com.android.settings.fuelgauge;
     19 
     20 import android.app.AppOpsManager;
     21 import android.content.Context;
     22 import android.os.UserHandle;
     23 import android.os.UserManager;
     24 import android.support.annotation.VisibleForTesting;
     25 import android.support.v7.preference.Preference;
     26 
     27 import com.android.settings.R;
     28 import com.android.settings.SettingsActivity;
     29 import com.android.settings.core.BasePreferenceController;
     30 import com.android.settings.core.InstrumentedPreferenceFragment;
     31 import com.android.settings.fuelgauge.batterytip.AppInfo;
     32 import com.android.settings.fuelgauge.batterytip.BatteryTipUtils;
     33 
     34 import java.util.List;
     35 
     36 /**
     37  * Controller to change and update the smart battery toggle
     38  */
     39 public class RestrictAppPreferenceController extends BasePreferenceController {
     40     @VisibleForTesting
     41     static final String KEY_RESTRICT_APP = "restricted_app";
     42 
     43     @VisibleForTesting
     44     List<AppInfo> mAppInfos;
     45     private AppOpsManager mAppOpsManager;
     46     private InstrumentedPreferenceFragment mPreferenceFragment;
     47     private UserManager mUserManager;
     48 
     49     public RestrictAppPreferenceController(Context context) {
     50         super(context, KEY_RESTRICT_APP);
     51         mAppOpsManager = (AppOpsManager) context.getSystemService(Context.APP_OPS_SERVICE);
     52         mUserManager = context.getSystemService(UserManager.class);
     53     }
     54 
     55     public RestrictAppPreferenceController(InstrumentedPreferenceFragment preferenceFragment) {
     56         this(preferenceFragment.getContext());
     57         mPreferenceFragment = preferenceFragment;
     58     }
     59 
     60     @Override
     61     public int getAvailabilityStatus() {
     62         return AVAILABLE;
     63     }
     64 
     65     @Override
     66     public void updateState(Preference preference) {
     67         super.updateState(preference);
     68 
     69         mAppInfos = BatteryTipUtils.getRestrictedAppsList(mAppOpsManager, mUserManager);
     70 
     71         final int num = mAppInfos.size();
     72         // Don't show it if no app been restricted
     73         preference.setVisible(num > 0);
     74         preference.setSummary(
     75                 mContext.getResources().getQuantityString(R.plurals.restricted_app_summary, num,
     76                         num));
     77     }
     78 
     79     @Override
     80     public boolean handlePreferenceTreeClick(Preference preference) {
     81         if (getPreferenceKey().equals(preference.getKey())) {
     82             // start fragment
     83             RestrictedAppDetails.startRestrictedAppDetails(mPreferenceFragment,
     84                     mAppInfos);
     85             return true;
     86         }
     87 
     88         return super.handlePreferenceTreeClick(preference);
     89     }
     90 }
     91