1 /*
2  * Copyright (C) 2018 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.car.settings.location;
18 
19 import android.car.drivingstate.CarUxRestrictions;
20 import android.content.Context;
21 import android.content.Intent;
22 import android.content.pm.PackageManager;
23 import android.content.pm.ResolveInfo;
24 
25 import androidx.annotation.VisibleForTesting;
26 import androidx.preference.Preference;
27 import androidx.preference.PreferenceGroup;
28 
29 import com.android.car.settings.R;
30 import com.android.car.settings.applications.ApplicationDetailsFragment;
31 import com.android.car.settings.common.FragmentController;
32 import com.android.car.settings.common.PreferenceController;
33 import com.android.car.ui.preference.CarUiPreference;
34 import com.android.settingslib.location.RecentLocationApps;
35 import com.android.settingslib.location.RecentLocationApps.Request;
36 
37 import java.util.List;
38 
39 /**
40  * Displays all apps that have requested location recently.
41  */
42 public class RecentLocationRequestsPreferenceController extends
43         PreferenceController<PreferenceGroup> {
44     private RecentLocationApps mRecentLocationApps;
45     // This list will always be sorted by most recent first.
46     private List<Request> mRecentLocationRequests;
47 
RecentLocationRequestsPreferenceController(Context context, String preferenceKey, FragmentController fragmentController, CarUxRestrictions uxRestrictions)48     public RecentLocationRequestsPreferenceController(Context context, String preferenceKey,
49             FragmentController fragmentController, CarUxRestrictions uxRestrictions) {
50         super(context, preferenceKey, fragmentController, uxRestrictions);
51         mRecentLocationApps = new RecentLocationApps(context);
52     }
53 
54     @VisibleForTesting
setRecentLocationApps(RecentLocationApps apps)55     void setRecentLocationApps(RecentLocationApps apps) {
56         mRecentLocationApps = apps;
57     }
58 
59     @Override
getPreferenceType()60     protected Class<PreferenceGroup> getPreferenceType() {
61         return PreferenceGroup.class;
62     }
63 
64     @Override
updateState(PreferenceGroup group)65     protected void updateState(PreferenceGroup group) {
66         if (mRecentLocationRequests == null) {
67             // First time displaying a list.
68             mRecentLocationRequests =
69                     mRecentLocationApps.getAppListSorted(/* showSystemApps= */ true);
70         } else {
71             // If preferences were already added to the screen, get a new list
72             // and only update the displayed app-list if there is a difference.
73             List<Request> newRequests = mRecentLocationApps.getAppListSorted(true);
74             // listsEqual compares by elements' package names only, using List.equals() will
75             // not work because it will always return false since it also compares the time.
76             if (listsEqual(newRequests, mRecentLocationRequests)) {
77                 return;
78             }
79             mRecentLocationRequests = newRequests;
80         }
81         if (mRecentLocationRequests.isEmpty()) {
82             CarUiPreference emptyMessagePref = new CarUiPreference(getContext());
83             emptyMessagePref.setTitle(R.string.location_settings_recent_requests_empty_message);
84             group.addPreference(emptyMessagePref);
85         } else {
86             group.removeAll();
87             for (Request request : mRecentLocationRequests) {
88                 Preference appPref = createPreference(request);
89                 group.addPreference(appPref);
90             }
91         }
92     }
93 
createPreference(Request request)94     private Preference createPreference(Request request) {
95         CarUiPreference pref = new CarUiPreference(getContext());
96         pref.setSummary(request.contentDescription);
97         pref.setIcon(request.icon);
98         pref.setTitle(request.label);
99         Intent intent = new Intent();
100         intent.setPackage(request.packageName);
101         ResolveInfo resolveInfo = getContext().getPackageManager().resolveActivity(intent,
102                 PackageManager.MATCH_DEFAULT_ONLY);
103         pref.setOnPreferenceClickListener(p -> {
104             getFragmentController().launchFragment(
105                     ApplicationDetailsFragment.getInstance(resolveInfo.activityInfo.packageName));
106             return true;
107         });
108         return pref;
109     }
110 
111     /**
112      * Compares two {@link Request} lists by the elements' package names.
113      *
114      * @param a The first list.
115      * @param b The second list.
116      * @return {@code true} if both lists have the same elements (by package name) and order.
117      */
listsEqual(List<Request> a, List<Request> b)118     private boolean listsEqual(List<Request> a, List<Request> b) {
119         if (a.size() != b.size()) {
120             return false;
121         }
122         for (int i = 0; i < a.size(); i++) {
123             if (!a.get(i).packageName.equals(b.get(i).packageName)) {
124                 return false;
125             }
126         }
127         return true;
128     }
129 }
130