1 /*
2  * Copyright (C) 2016 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.storagemanager.deletionhelper;
18 
19 import android.content.Context;
20 import androidx.annotation.VisibleForTesting;
21 import androidx.preference.Preference;
22 import androidx.preference.PreferenceScreen;
23 import android.text.format.Formatter;
24 import android.util.AttributeSet;
25 import com.android.internal.logging.MetricsLogger;
26 import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
27 import com.android.storagemanager.R;
28 import com.android.storagemanager.utils.PreferenceListCache;
29 import java.util.List;
30 
31 /**
32  * AppDeletionPreferenceGroup is a collapsible checkbox preference group which contains many
33  * apps to be cleared in the Deletion Helper.
34  */
35 public class AppDeletionPreferenceGroup extends CollapsibleCheckboxPreferenceGroup
36         implements AppDeletionType.AppListener, Preference.OnPreferenceChangeListener {
37     private static final int ORDER_OFFSET = 100;
38     private AppDeletionType mBackend;
39 
40     @VisibleForTesting PreferenceScreen mScreen;
41 
AppDeletionPreferenceGroup(Context context)42     public AppDeletionPreferenceGroup(Context context) {
43         this(context, null);
44     }
45 
AppDeletionPreferenceGroup(Context context, AttributeSet attrs)46     public AppDeletionPreferenceGroup(Context context, AttributeSet attrs) {
47         super(context, attrs);
48         setOnPreferenceChangeListener(this);
49         updateText();
50     }
51 
52     @Override
onAppRebuild(List<AppsAsyncLoader.PackageInfo> apps)53     public void onAppRebuild(List<AppsAsyncLoader.PackageInfo> apps) {
54         int appCount = apps.size();
55         int currentUserId = getContext().getUserId();
56         PreferenceListCache cache = new PreferenceListCache(this);
57         for (int i = 0; i < appCount; i++) {
58             AppsAsyncLoader.PackageInfo app = apps.get(i);
59 
60             if (app.userId != currentUserId) {
61                 continue;
62             }
63 
64             final String packageName = app.packageName;
65             AppDeletionPreference preference =
66                     (AppDeletionPreference) cache.getCachedPreference(packageName);
67             if (preference == null) {
68                 preference = new AppDeletionPreference(getContext(), app);
69                 preference.setKey(packageName);
70                 preference.setOnPreferenceChangeListener(this);
71             }
72             addThresholdDependentPreference(preference, isNoThreshold());
73             preference.setChecked(mBackend.isChecked(packageName));
74             preference.setOrder(i + ORDER_OFFSET);
75             preference.updateSummary();
76         }
77         cache.removeCachedPrefs();
78         updateText();
79     }
80 
addThresholdDependentPreference( AppDeletionPreference preference, boolean isThresholded)81     private void addThresholdDependentPreference(
82             AppDeletionPreference preference, boolean isThresholded) {
83         if (isNoThreshold()) {
84             addPreferenceToScreen(preference);
85         } else {
86             addPreference(preference);
87         }
88     }
89 
isNoThreshold()90     private boolean isNoThreshold() {
91         return mBackend.getDeletionThreshold() == 0;
92     }
93 
94     @VisibleForTesting
addPreferenceToScreen(AppDeletionPreference preference)95     void addPreferenceToScreen(AppDeletionPreference preference) {
96         if (mScreen == null) {
97             mScreen = getPreferenceManager().getPreferenceScreen();
98         }
99         mScreen.addPreference(preference);
100     }
101 
102     @Override
onPreferenceChange(Preference preference, Object newValue)103     public boolean onPreferenceChange(Preference preference, Object newValue) {
104         boolean isChecked = (boolean) newValue;
105 
106         // If we have no AppDeletionType, we have no apps to toggle.
107         if (mBackend == null) {
108             return true;
109         }
110 
111         if (preference == this) {
112             for (int i = 0; i < getPreferenceCount(); i++) {
113                 AppDeletionPreference p = (AppDeletionPreference) getPreference(i);
114                 p.setOnPreferenceChangeListener(null);
115                 p.setChecked(isChecked);
116                 mBackend.setChecked(p.getPackageName(), isChecked);
117                 p.setOnPreferenceChangeListener(this);
118             }
119             updateText();
120             MetricsLogger.action(getContext(), MetricsEvent.ACTION_DELETION_SELECTION_ALL_APPS,
121                     isChecked);
122             return true;
123         }
124 
125         // If a single preference changed, we need to toggle just itself.
126         AppDeletionPreference p = (AppDeletionPreference) preference;
127         mBackend.setChecked(p.getPackageName(), isChecked);
128         logAppToggle(isChecked, p.getPackageName());
129         updateText();
130         return true;
131     }
132 
133     @Override
onClick()134     public void onClick() {
135         super.onClick();
136         MetricsLogger.action(
137                 getContext(), MetricsEvent.ACTION_DELETION_APPS_COLLAPSED, isCollapsed());
138     }
139 
140     /**
141      * Initializes the PreferenceGroup with a source of apps to list.
142      *
143      * @param type The AppDeletionType which provides the app list.
144      */
setDeletionType(AppDeletionType type)145     public void setDeletionType(AppDeletionType type) {
146         mBackend = type;
147     }
148 
updateText()149     private void updateText() {
150         long freeableBytes = 0;
151         long deletionThreshold = AppsAsyncLoader.UNUSED_DAYS_DELETION_THRESHOLD;
152         if (mBackend != null) {
153             freeableBytes =
154                     mBackend.getTotalAppsFreeableSpace(DeletionHelperSettings.COUNT_UNCHECKED);
155             deletionThreshold = mBackend.getDeletionThreshold();
156             switchSpinnerToCheckboxOrDisablePreference(freeableBytes, mBackend.getLoadingStatus());
157         }
158         Context app = getContext();
159         setTitle(app.getString(R.string.deletion_helper_apps_group_title));
160         setSummary(
161                 app.getString(
162                         R.string.deletion_helper_apps_group_summary,
163                         Formatter.formatFileSize(app, freeableBytes),
164                         deletionThreshold));
165     }
166 
logAppToggle(boolean checked, String packageName)167     private void logAppToggle(boolean checked, String packageName) {
168         if (checked) {
169             MetricsLogger.action(
170                     getContext(), MetricsEvent.ACTION_DELETION_SELECTION_APP_ON, packageName);
171         } else {
172             MetricsLogger.action(getContext(), MetricsEvent.ACTION_DELETION_SELECTION_APP_OFF,
173                     packageName);
174         }
175     }
176 }
177