1 /*
2  * Copyright (C) 2019 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.applications.managedomainurls;
18 
19 import android.car.drivingstate.CarUxRestrictions;
20 import android.content.Context;
21 import android.content.pm.PackageManager;
22 import android.hardware.usb.IUsbManager;
23 import android.os.IBinder;
24 import android.os.RemoteException;
25 import android.os.ServiceManager;
26 
27 import androidx.annotation.VisibleForTesting;
28 import androidx.preference.Preference;
29 
30 import com.android.car.settings.R;
31 import com.android.car.settings.common.FragmentController;
32 import com.android.car.settings.common.Logger;
33 import com.android.settingslib.applications.AppUtils;
34 
35 /**
36  * Business logic to reset a user preference for auto launching an app.
37  *
38  * <p>i.e. if a user has both NavigationAppA and NavigationAppB installed and NavigationAppA is set
39  * as the default navigation app, the user can reset that preference to pick a different default
40  * navigation app.
41  */
42 public class ClearDefaultsPreferenceController extends
43         AppLaunchSettingsBasePreferenceController<Preference> {
44 
45     private static final Logger LOG = new Logger(ClearDefaultsPreferenceController.class);
46 
47     private final IUsbManager mUsbManager;
48 
ClearDefaultsPreferenceController(Context context, String preferenceKey, FragmentController fragmentController, CarUxRestrictions uxRestrictions)49     public ClearDefaultsPreferenceController(Context context, String preferenceKey,
50             FragmentController fragmentController, CarUxRestrictions uxRestrictions) {
51         super(context, preferenceKey, fragmentController, uxRestrictions);
52         IBinder b = ServiceManager.getService(Context.USB_SERVICE);
53         mUsbManager = IUsbManager.Stub.asInterface(b);
54     }
55 
56     @VisibleForTesting
ClearDefaultsPreferenceController(Context context, String preferenceKey, FragmentController fragmentController, CarUxRestrictions uxRestrictions, PackageManager packageManager, IUsbManager iUsbManager)57     ClearDefaultsPreferenceController(Context context, String preferenceKey,
58             FragmentController fragmentController, CarUxRestrictions uxRestrictions,
59             PackageManager packageManager, IUsbManager iUsbManager) {
60         super(context, preferenceKey, fragmentController, uxRestrictions, packageManager);
61         mUsbManager = iUsbManager;
62     }
63 
64     @Override
getPreferenceType()65     protected Class<Preference> getPreferenceType() {
66         return Preference.class;
67     }
68 
69     @Override
updateState(Preference preference)70     protected void updateState(Preference preference) {
71         boolean autoLaunchEnabled = AppUtils.hasPreferredActivities(mPm, getPackageName())
72                 || isDefaultBrowser(getPackageName())
73                 || hasUsbDefaults(mUsbManager, getPackageName());
74 
75         preference.setEnabled(autoLaunchEnabled);
76         if (autoLaunchEnabled) {
77             preference.setTitle(R.string.auto_launch_reset_text);
78             preference.setSummary(R.string.auto_launch_enable_text);
79         } else {
80             preference.setTitle(R.string.auto_launch_disable_text);
81             preference.setSummary(null);
82         }
83     }
84 
85     @Override
handlePreferenceClicked(Preference preference)86     protected boolean handlePreferenceClicked(Preference preference) {
87         if (mUsbManager != null) {
88             int userId = getCurrentUserId();
89             mPm.clearPackagePreferredActivities(getPackageName());
90             if (isDefaultBrowser(getPackageName())) {
91                 mPm.setDefaultBrowserPackageNameAsUser(/* packageName= */ null, userId);
92             }
93             try {
94                 mUsbManager.clearDefaults(getPackageName(), userId);
95             } catch (RemoteException e) {
96                 LOG.e("mUsbManager.clearDefaults", e);
97             }
98             refreshUi();
99         }
100         return true;
101     }
102 
isDefaultBrowser(String packageName)103     private boolean isDefaultBrowser(String packageName) {
104         String defaultBrowser = mPm.getDefaultBrowserPackageNameAsUser(getCurrentUserId());
105         return packageName.equals(defaultBrowser);
106     }
107 
hasUsbDefaults(IUsbManager usbManager, String packageName)108     private boolean hasUsbDefaults(IUsbManager usbManager, String packageName) {
109         try {
110             if (usbManager != null) {
111                 return usbManager.hasDefaults(packageName, getCurrentUserId());
112             }
113         } catch (RemoteException e) {
114             LOG.e("mUsbManager.hasDefaults", e);
115         }
116         return false;
117     }
118 }
119