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.support.v7.preference.Preference;
28 import android.support.v7.preference.PreferenceViewHolder;
29 import android.text.SpannableString;
30 import android.text.TextUtils;
31 import android.text.style.BulletSpan;
32 import android.util.AttributeSet;
33 import android.util.Log;
34 import android.view.View;
35 import android.widget.Button;
36 import android.widget.TextView;
37 
38 import com.android.settings.R;
39 import com.android.settingslib.applications.AppUtils;
40 import com.android.settingslib.applications.ApplicationsState;
41 
42 public class ClearDefaultsPreference extends Preference {
43 
44     protected static final String TAG = ClearDefaultsPreference.class.getSimpleName();
45 
46     private Button mActivitiesButton;
47 
48     private AppWidgetManager mAppWidgetManager;
49     private IUsbManager mUsbManager;
50     private PackageManager mPm;
51     private String mPackageName;
52     protected ApplicationsState.AppEntry mAppEntry;
53 
ClearDefaultsPreference(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes)54     public ClearDefaultsPreference(Context context, AttributeSet attrs, int defStyleAttr,
55             int defStyleRes) {
56         super(context, attrs, defStyleAttr, defStyleRes);
57 
58         setLayoutResource(R.layout.app_preferred_settings);
59 
60         mAppWidgetManager = AppWidgetManager.getInstance(context);
61         mPm = context.getPackageManager();
62         IBinder b = ServiceManager.getService(Context.USB_SERVICE);
63         mUsbManager = IUsbManager.Stub.asInterface(b);
64     }
65 
ClearDefaultsPreference(Context context, AttributeSet attrs, int defStyleAttr)66     public ClearDefaultsPreference(Context context, AttributeSet attrs, int defStyleAttr) {
67         this(context, attrs, defStyleAttr, 0);
68     }
69 
ClearDefaultsPreference(Context context, AttributeSet attrs)70     public ClearDefaultsPreference(Context context, AttributeSet attrs) {
71         this(context, attrs, 0);
72     }
73 
ClearDefaultsPreference(Context context)74     public ClearDefaultsPreference(Context context) {
75         this(context, null);
76     }
77 
setPackageName(String packageName)78     public void setPackageName(String packageName) {
79         mPackageName = packageName;
80     }
81 
setAppEntry(ApplicationsState.AppEntry entry)82     public void setAppEntry(ApplicationsState.AppEntry entry) {
83         mAppEntry = entry;
84     }
85 
86     @Override
onBindViewHolder(final PreferenceViewHolder view)87     public void onBindViewHolder(final PreferenceViewHolder view) {
88         super.onBindViewHolder(view);
89 
90         mActivitiesButton = (Button) view.findViewById(R.id.clear_activities_button);
91         mActivitiesButton.setOnClickListener(new View.OnClickListener() {
92             @Override
93             public void onClick(View v) {
94                 if (mUsbManager != null) {
95                     final int userId = UserHandle.myUserId();
96                     mPm.clearPackagePreferredActivities(mPackageName);
97                     if (isDefaultBrowser(mPackageName)) {
98                         mPm.setDefaultBrowserPackageNameAsUser(null, userId);
99                     }
100                     try {
101                         mUsbManager.clearDefaults(mPackageName, userId);
102                     } catch (RemoteException e) {
103                         Log.e(TAG, "mUsbManager.clearDefaults", e);
104                     }
105                     mAppWidgetManager.setBindAppWidgetPermission(mPackageName, false);
106                     TextView autoLaunchView = (TextView) view.findViewById(R.id.auto_launch);
107                     resetLaunchDefaultsUi(autoLaunchView);
108                 }
109             }
110         });
111 
112         updateUI(view);
113     }
114 
updateUI(PreferenceViewHolder view)115     public boolean updateUI(PreferenceViewHolder view) {
116         boolean hasBindAppWidgetPermission =
117                 mAppWidgetManager.hasBindAppWidgetPermission(mAppEntry.info.packageName);
118 
119         TextView autoLaunchView = (TextView) view.findViewById(R.id.auto_launch);
120         boolean autoLaunchEnabled = AppUtils.hasPreferredActivities(mPm, mPackageName)
121                 || isDefaultBrowser(mPackageName)
122                 || AppUtils.hasUsbDefaults(mUsbManager, mPackageName);
123         if (!autoLaunchEnabled && !hasBindAppWidgetPermission) {
124             resetLaunchDefaultsUi(autoLaunchView);
125         } else {
126             boolean useBullets = hasBindAppWidgetPermission && autoLaunchEnabled;
127 
128             if (hasBindAppWidgetPermission) {
129                 autoLaunchView.setText(R.string.auto_launch_label_generic);
130             } else {
131                 autoLaunchView.setText(R.string.auto_launch_label);
132             }
133 
134             Context context = getContext();
135             CharSequence text = null;
136             int bulletIndent = context.getResources().getDimensionPixelSize(
137                     R.dimen.installed_app_details_bullet_offset);
138             if (autoLaunchEnabled) {
139                 CharSequence autoLaunchEnableText = context.getText(
140                         R.string.auto_launch_enable_text);
141                 SpannableString s = new SpannableString(autoLaunchEnableText);
142                 if (useBullets) {
143                     s.setSpan(new BulletSpan(bulletIndent), 0, autoLaunchEnableText.length(), 0);
144                 }
145                 text = (text == null) ?
146                         TextUtils.concat(s, "\n") : TextUtils.concat(text, "\n", s, "\n");
147             }
148             if (hasBindAppWidgetPermission) {
149                 CharSequence alwaysAllowBindAppWidgetsText =
150                         context.getText(R.string.always_allow_bind_appwidgets_text);
151                 SpannableString s = new SpannableString(alwaysAllowBindAppWidgetsText);
152                 if (useBullets) {
153                     s.setSpan(new BulletSpan(bulletIndent),
154                             0, alwaysAllowBindAppWidgetsText.length(), 0);
155                 }
156                 text = (text == null) ?
157                         TextUtils.concat(s, "\n") : TextUtils.concat(text, "\n", s, "\n");
158             }
159             autoLaunchView.setText(text);
160             mActivitiesButton.setEnabled(true);
161         }
162         return true;
163     }
164 
isDefaultBrowser(String packageName)165     private boolean isDefaultBrowser(String packageName) {
166         final String defaultBrowser = mPm.getDefaultBrowserPackageNameAsUser(UserHandle.myUserId());
167         return packageName.equals(defaultBrowser);
168     }
169 
resetLaunchDefaultsUi(TextView autoLaunchView)170     private void resetLaunchDefaultsUi(TextView autoLaunchView) {
171         autoLaunchView.setText(R.string.auto_launch_disable_text);
172         // Disable clear activities button
173         mActivitiesButton.setEnabled(false);
174     }
175 }
176