1 /*
2  * Copyright (C) 2015 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;
18 
19 import android.appwidget.AppWidgetManager;
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 import android.os.UserHandle;
27 import android.os.UserManager;
28 import android.text.SpannableString;
29 import android.text.TextUtils;
30 import android.text.style.BulletSpan;
31 import android.util.AttributeSet;
32 import android.util.Log;
33 import android.view.View;
34 import android.widget.Button;
35 import android.widget.TextView;
36 
37 import androidx.core.content.res.TypedArrayUtils;
38 import androidx.preference.Preference;
39 import androidx.preference.PreferenceViewHolder;
40 
41 import com.android.settings.R;
42 import com.android.settingslib.RestrictedLockUtils;
43 import com.android.settingslib.RestrictedLockUtilsInternal;
44 import com.android.settingslib.applications.AppUtils;
45 import com.android.settingslib.applications.ApplicationsState;
46 
47 public class ClearDefaultsPreference extends Preference {
48 
49     protected static final String TAG = ClearDefaultsPreference.class.getSimpleName();
50     protected ApplicationsState.AppEntry mAppEntry;
51 
52     private Button mActivitiesButton;
53 
54     private AppWidgetManager mAppWidgetManager;
55     private IUsbManager mUsbManager;
56     private PackageManager mPm;
57     private String mPackageName;
58 
59     private final boolean mAppsControlDisallowedBySystem;
60     private final RestrictedLockUtils.EnforcedAdmin mAppsControlDisallowedAdmin;
61 
ClearDefaultsPreference(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes)62     public ClearDefaultsPreference(Context context, AttributeSet attrs, int defStyleAttr,
63             int defStyleRes) {
64         super(context, attrs, defStyleAttr, defStyleRes);
65 
66         setLayoutResource(R.layout.app_preferred_settings);
67 
68         mAppWidgetManager = AppWidgetManager.getInstance(context);
69         mPm = context.getPackageManager();
70         IBinder b = ServiceManager.getService(Context.USB_SERVICE);
71         mUsbManager = IUsbManager.Stub.asInterface(b);
72 
73         mAppsControlDisallowedBySystem = RestrictedLockUtilsInternal.hasBaseUserRestriction(
74                 getContext(), UserManager.DISALLOW_APPS_CONTROL, UserHandle.myUserId());
75         mAppsControlDisallowedAdmin = RestrictedLockUtilsInternal.checkIfRestrictionEnforced(
76                 getContext(), UserManager.DISALLOW_APPS_CONTROL, UserHandle.myUserId());
77 
78 
79     }
80 
ClearDefaultsPreference(Context context, AttributeSet attrs, int defStyleAttr)81     public ClearDefaultsPreference(Context context, AttributeSet attrs, int defStyleAttr) {
82         this(context, attrs, defStyleAttr, 0);
83     }
84 
ClearDefaultsPreference(Context context, AttributeSet attrs)85     public ClearDefaultsPreference(Context context, AttributeSet attrs) {
86         this(context, attrs, TypedArrayUtils.getAttr(context,
87                 androidx.preference.R.attr.preferenceStyle,
88                 android.R.attr.preferenceStyle));
89     }
90 
ClearDefaultsPreference(Context context)91     public ClearDefaultsPreference(Context context) {
92         this(context, null);
93     }
94 
setPackageName(String packageName)95     public void setPackageName(String packageName) {
96         mPackageName = packageName;
97     }
98 
setAppEntry(ApplicationsState.AppEntry entry)99     public void setAppEntry(ApplicationsState.AppEntry entry) {
100         mAppEntry = entry;
101     }
102 
103     @Override
onBindViewHolder(final PreferenceViewHolder view)104     public void onBindViewHolder(final PreferenceViewHolder view) {
105         super.onBindViewHolder(view);
106 
107         mActivitiesButton = (Button) view.findViewById(R.id.clear_activities_button);
108         mActivitiesButton.setOnClickListener(new View.OnClickListener() {
109             @Override
110             public void onClick(View v) {
111                 if (mAppsControlDisallowedAdmin != null && !mAppsControlDisallowedBySystem) {
112                     RestrictedLockUtils.sendShowAdminSupportDetailsIntent(
113                             getContext(), mAppsControlDisallowedAdmin);
114                     return;
115                 }
116 
117                 if (mUsbManager != null) {
118                     final int userId = UserHandle.myUserId();
119                     mPm.clearPackagePreferredActivities(mPackageName);
120                     if (AppUtils.isDefaultBrowser(getContext(), mPackageName)) {
121                         mPm.setDefaultBrowserPackageNameAsUser(null, userId);
122                     }
123                     try {
124                         mUsbManager.clearDefaults(mPackageName, userId);
125                     } catch (RemoteException e) {
126                         Log.e(TAG, "mUsbManager.clearDefaults", e);
127                     }
128                     mAppWidgetManager.setBindAppWidgetPermission(mPackageName, false);
129                     TextView autoLaunchView = (TextView) view.findViewById(R.id.auto_launch);
130                     resetLaunchDefaultsUi(autoLaunchView);
131                 }
132             }
133         });
134 
135         updateUI(view);
136     }
137 
updateUI(PreferenceViewHolder view)138     public boolean updateUI(PreferenceViewHolder view) {
139         boolean hasBindAppWidgetPermission =
140                 mAppWidgetManager.hasBindAppWidgetPermission(mAppEntry.info.packageName);
141 
142         TextView autoLaunchView = (TextView) view.findViewById(R.id.auto_launch);
143         boolean autoLaunchEnabled = AppUtils.hasPreferredActivities(mPm, mPackageName)
144                 || AppUtils.isDefaultBrowser(getContext(), mPackageName)
145                 || AppUtils.hasUsbDefaults(mUsbManager, mPackageName);
146         if (!autoLaunchEnabled && !hasBindAppWidgetPermission) {
147             resetLaunchDefaultsUi(autoLaunchView);
148         } else {
149             boolean useBullets = hasBindAppWidgetPermission && autoLaunchEnabled;
150 
151             if (hasBindAppWidgetPermission) {
152                 autoLaunchView.setText(R.string.auto_launch_label_generic);
153             } else {
154                 autoLaunchView.setText(R.string.auto_launch_label);
155             }
156 
157             Context context = getContext();
158             CharSequence text = null;
159             int bulletIndent = context.getResources().getDimensionPixelSize(
160                     R.dimen.installed_app_details_bullet_offset);
161             if (autoLaunchEnabled) {
162                 CharSequence autoLaunchEnableText = context.getText(
163                         R.string.auto_launch_enable_text);
164                 SpannableString s = new SpannableString(autoLaunchEnableText);
165                 if (useBullets) {
166                     s.setSpan(new BulletSpan(bulletIndent), 0, autoLaunchEnableText.length(), 0);
167                 }
168                 text = (text == null) ?
169                         TextUtils.concat(s, "\n") : TextUtils.concat(text, "\n", s, "\n");
170             }
171             if (hasBindAppWidgetPermission) {
172                 CharSequence alwaysAllowBindAppWidgetsText =
173                         context.getText(R.string.always_allow_bind_appwidgets_text);
174                 SpannableString s = new SpannableString(alwaysAllowBindAppWidgetsText);
175                 if (useBullets) {
176                     s.setSpan(new BulletSpan(bulletIndent),
177                             0, alwaysAllowBindAppWidgetsText.length(), 0);
178                 }
179                 text = (text == null) ?
180                         TextUtils.concat(s, "\n") : TextUtils.concat(text, "\n", s, "\n");
181             }
182             autoLaunchView.setText(text);
183             mActivitiesButton.setEnabled(true);
184         }
185         return true;
186     }
187 
resetLaunchDefaultsUi(TextView autoLaunchView)188     private void resetLaunchDefaultsUi(TextView autoLaunchView) {
189         autoLaunchView.setText(R.string.auto_launch_disable_text);
190         // Disable clear activities button
191         mActivitiesButton.setEnabled(false);
192     }
193 }
194