1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
|
/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License
*/
package com.android.systemui.tuner;
import android.app.ActivityManager;
import android.content.ContentResolver;
import android.content.Context;
import android.database.ContentObserver;
import android.net.Uri;
import android.os.Handler;
import android.os.Looper;
import android.provider.Settings;
import android.util.ArrayMap;
import com.android.systemui.SystemUI;
import com.android.systemui.SystemUIApplication;
import com.android.systemui.settings.CurrentUserTracker;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
public class TunerService extends SystemUI {
private final Observer mObserver = new Observer();
// Map of Uris we listen on to their settings keys.
private final ArrayMap<Uri, String> mListeningUris = new ArrayMap<>();
// Map of settings keys to the listener.
private final HashMap<String, List<Tunable>> mTunableLookup = new HashMap<>();
private ContentResolver mContentResolver;
private int mCurrentUser;
private CurrentUserTracker mUserTracker;
@Override
public void start() {
mContentResolver = mContext.getContentResolver();
putComponent(TunerService.class, this);
mCurrentUser = ActivityManager.getCurrentUser();
mUserTracker = new CurrentUserTracker(mContext) {
@Override
public void onUserSwitched(int newUserId) {
mCurrentUser = newUserId;
reloadAll();
reregisterAll();
}
};
mUserTracker.startTracking();
}
public void addTunable(Tunable tunable, String... keys) {
for (String key : keys) {
addTunable(tunable, key);
}
}
private void addTunable(Tunable tunable, String key) {
if (!mTunableLookup.containsKey(key)) {
mTunableLookup.put(key, new ArrayList<Tunable>());
}
mTunableLookup.get(key).add(tunable);
Uri uri = Settings.Secure.getUriFor(key);
if (!mListeningUris.containsKey(uri)) {
mListeningUris.put(uri, key);
mContentResolver.registerContentObserver(uri, false, mObserver, mCurrentUser);
}
// Send the first state.
String value = Settings.Secure.getStringForUser(mContentResolver, key, mCurrentUser);
tunable.onTuningChanged(key, value);
}
public void removeTunable(Tunable tunable) {
for (List<Tunable> list : mTunableLookup.values()) {
list.remove(tunable);
}
}
protected void reregisterAll() {
if (mListeningUris.size() == 0) {
return;
}
mContentResolver.unregisterContentObserver(mObserver);
for (Uri uri : mListeningUris.keySet()) {
mContentResolver.registerContentObserver(uri, false, mObserver, mCurrentUser);
}
}
public void reloadSetting(Uri uri) {
String key = mListeningUris.get(uri);
String value = Settings.Secure.getStringForUser(mContentResolver, key, mCurrentUser);
for (Tunable tunable : mTunableLookup.get(key)) {
tunable.onTuningChanged(key, value);
}
}
private void reloadAll() {
for (String key : mTunableLookup.keySet()) {
String value = Settings.Secure.getStringForUser(mContentResolver, key,
mCurrentUser);
for (Tunable tunable : mTunableLookup.get(key)) {
tunable.onTuningChanged(key, value);
}
}
}
// Only used in other processes, such as the tuner.
private static TunerService sInstance;
public static TunerService get(Context context) {
SystemUIApplication sysUi = (SystemUIApplication) context.getApplicationContext();
TunerService service = sysUi.getComponent(TunerService.class);
if (service == null) {
// Can't get it as a component, must in the tuner, lets just create one for now.
return getStaticService(context);
}
return service;
}
private static TunerService getStaticService(Context context) {
if (sInstance == null) {
sInstance = new TunerService();
sInstance.mContext = context.getApplicationContext();
sInstance.mComponents = new HashMap<>();
sInstance.start();
}
return sInstance;
}
private class Observer extends ContentObserver {
public Observer() {
super(new Handler(Looper.getMainLooper()));
}
@Override
public void onChange(boolean selfChange, Uri uri, int userId) {
if (userId == ActivityManager.getCurrentUser()) {
reloadSetting(uri);
}
}
}
public interface Tunable {
void onTuningChanged(String key, String newValue);
}
}
|
