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 import android.support.v7.preference.Preference;
27 import android.text.TextUtils;
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 
DefaultHomePreferenceController(Context context)44     public DefaultHomePreferenceController(Context context) {
45         super(context);
46         mPackageName = mContext.getPackageName();
47     }
48 
49     @Override
getPreferenceKey()50     public String getPreferenceKey() {
51         return "default_home";
52     }
53 
54     @Override
isAvailable()55     public boolean isAvailable() {
56         return true;
57     }
58 
59     @Override
updateState(Preference preference)60     public void updateState(Preference preference) {
61         super.updateState(preference);
62         final DefaultAppInfo defaultApp = getDefaultAppInfo();
63         final CharSequence defaultAppLabel = defaultApp != null ? defaultApp.loadLabel() : null;
64         if (TextUtils.isEmpty(defaultAppLabel)) {
65             final String onlyAppLabel = getOnlyAppLabel();
66             if (!TextUtils.isEmpty(onlyAppLabel)) {
67                 preference.setSummary(onlyAppLabel);
68             }
69         }
70     }
71 
72     @Override
getDefaultAppInfo()73     protected DefaultAppInfo getDefaultAppInfo() {
74         final ArrayList<ResolveInfo> homeActivities = new ArrayList<>();
75         final ComponentName currentDefaultHome = mPackageManager.getHomeActivities(homeActivities);
76 
77         return new DefaultAppInfo(mPackageManager, mUserId, currentDefaultHome);
78     }
79 
getOnlyAppLabel()80     private String getOnlyAppLabel() {
81         final List<ResolveInfo> homeActivities = new ArrayList<>();
82         final List<ActivityInfo> appLabels = new ArrayList<>();
83 
84         mPackageManager.getHomeActivities(homeActivities);
85         for (ResolveInfo candidate : homeActivities) {
86             final ActivityInfo info = candidate.activityInfo;
87             if (info.packageName.equals(mPackageName)) {
88                 continue;
89             }
90             appLabels.add(info);
91         }
92         return appLabels.size() == 1
93                 ? appLabels.get(0).loadLabel(mPackageManager.getPackageManager()).toString()
94                 : null;
95     }
96 
hasHomePreference(String pkg, Context context)97     public static boolean hasHomePreference(String pkg, Context context) {
98         ArrayList<ResolveInfo> homeActivities = new ArrayList<>();
99         PackageManager pm = context.getPackageManager();
100         pm.getHomeActivities(homeActivities);
101         for (int i = 0; i < homeActivities.size(); i++) {
102             if (homeActivities.get(i).activityInfo.packageName.equals(pkg)) {
103                 return true;
104             }
105         }
106         return false;
107     }
108 
isHomeDefault(String pkg, Context context)109     public static boolean isHomeDefault(String pkg, Context context) {
110         ArrayList<ResolveInfo> homeActivities = new ArrayList<>();
111         PackageManager pm = context.getPackageManager();
112         ComponentName def = pm.getHomeActivities(homeActivities);
113 
114         return def != null && def.getPackageName().equals(pkg);
115     }
116 }
117