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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.applications.defaultapps;
     18 
     19 import android.content.Context;
     20 import android.content.Intent;
     21 import android.content.pm.ResolveInfo;
     22 import android.provider.Settings;
     23 import android.telephony.TelephonyManager;
     24 
     25 import java.util.List;
     26 
     27 public class DefaultEmergencyPreferenceController extends DefaultAppPreferenceController {
     28 
     29     private static final boolean DEFAULT_EMERGENCY_APP_IS_CONFIGURABLE = false;
     30 
     31     public static final Intent QUERY_INTENT = new Intent(
     32             TelephonyManager.ACTION_EMERGENCY_ASSISTANCE);
     33 
     34     public DefaultEmergencyPreferenceController(Context context) {
     35         super(context);
     36     }
     37 
     38     @Override
     39     public boolean isAvailable() {
     40         return DEFAULT_EMERGENCY_APP_IS_CONFIGURABLE
     41                 && isCapable()
     42                 && mPackageManager.getPackageManager().resolveActivity(QUERY_INTENT, 0) != null;
     43     }
     44 
     45     @Override
     46     public String getPreferenceKey() {
     47         return "default_emergency_app";
     48     }
     49 
     50     @Override
     51     protected DefaultAppInfo getDefaultAppInfo() {
     52         return null;
     53     }
     54 
     55     private boolean isCapable() {
     56         return TelephonyManager.EMERGENCY_ASSISTANCE_ENABLED
     57                 && mContext.getResources().getBoolean(
     58                 com.android.internal.R.bool.config_voice_capable);
     59     }
     60 
     61     public static boolean hasEmergencyPreference(String pkg, Context context) {
     62         Intent i = new Intent(QUERY_INTENT);
     63         i.setPackage(pkg);
     64         final List<ResolveInfo> resolveInfos =
     65                 context.getPackageManager().queryIntentActivities(i, 0);
     66         return resolveInfos != null && resolveInfos.size() != 0;
     67     }
     68 
     69     public static boolean isEmergencyDefault(String pkg, Context context) {
     70         String defaultPackage = Settings.Secure.getString(context.getContentResolver(),
     71                 Settings.Secure.EMERGENCY_ASSISTANCE_APPLICATION);
     72         return defaultPackage != null && defaultPackage.equals(pkg);
     73     }
     74 }
     75