| /* |
| * 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); |
| } |
| } |