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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.ComponentName;
     20 import android.content.Context;
     21 import android.content.Intent;
     22 import android.content.IntentFilter;
     23 import android.content.pm.ActivityInfo;
     24 import android.content.pm.PackageManager;
     25 import android.content.pm.ResolveInfo;
     26 
     27 import com.android.settings.applications.PackageManagerWrapper;
     28 
     29 import java.util.ArrayList;
     30 import java.util.List;
     31 
     32 public class DefaultHomePreferenceController extends DefaultAppPreferenceController {
     33 
     34     static final IntentFilter HOME_FILTER;
     35 
     36     private final String mPackageName;
     37 
     38     static {
     39         HOME_FILTER = new IntentFilter(Intent.ACTION_MAIN);
     40         HOME_FILTER.addCategory(Intent.CATEGORY_HOME);
     41         HOME_FILTER.addCategory(Intent.CATEGORY_DEFAULT);
     42     }
     43 
     44     public DefaultHomePreferenceController(Context context) {
     45         super(context);
     46         mPackageName = mContext.getPackageName();
     47     }
     48 
     49     @Override
     50     public String getPreferenceKey() {
     51         return "default_home";
     52     }
     53 
     54     @Override
     55     public boolean isAvailable() {
     56         return true;
     57     }
     58 
     59     @Override
     60     protected DefaultAppInfo getDefaultAppInfo() {
     61         final ArrayList<ResolveInfo> homeActivities = new ArrayList<>();
     62         final ComponentName currentDefaultHome = mPackageManager.getHomeActivities(homeActivities);
     63         if (currentDefaultHome != null) {
     64             return new DefaultAppInfo(mPackageManager, mUserId, currentDefaultHome);
     65         }
     66         final ActivityInfo onlyAppInfo = getOnlyAppInfo();
     67         if (onlyAppInfo != null) {
     68             return new DefaultAppInfo(mPackageManager, mUserId, onlyAppInfo.getComponentName());
     69         }
     70         return null;
     71     }
     72 
     73     private ActivityInfo getOnlyAppInfo() {
     74         final List<ResolveInfo> homeActivities = new ArrayList<>();
     75         final List<ActivityInfo> appLabels = new ArrayList<>();
     76 
     77         mPackageManager.getHomeActivities(homeActivities);
     78         for (ResolveInfo candidate : homeActivities) {
     79             final ActivityInfo info = candidate.activityInfo;
     80             if (info.packageName.equals(mPackageName)) {
     81                 continue;
     82             }
     83             appLabels.add(info);
     84         }
     85         return appLabels.size() == 1
     86                 ? appLabels.get(0)
     87                 : null;
     88     }
     89 
     90     public static boolean hasHomePreference(String pkg, Context context) {
     91         ArrayList<ResolveInfo> homeActivities = new ArrayList<>();
     92         PackageManager pm = context.getPackageManager();
     93         pm.getHomeActivities(homeActivities);
     94         for (int i = 0; i < homeActivities.size(); i++) {
     95             if (homeActivities.get(i).activityInfo.packageName.equals(pkg)) {
     96                 return true;
     97             }
     98         }
     99         return false;
    100     }
    101 
    102     public static boolean isHomeDefault(String pkg, PackageManagerWrapper pm) {
    103         final ArrayList<ResolveInfo> homeActivities = new ArrayList<>();
    104         ComponentName def = pm.getHomeActivities(homeActivities);
    105 
    106         return def == null || def.getPackageName().equals(pkg);
    107     }
    108 }
    109