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/*
* Copyright (C) 2016 The CyanogenMod 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 lineageos.preference;
import android.content.ContentResolver;
import android.content.Context;
import android.database.ContentObserver;
import android.net.Uri;
import android.os.Handler;
import android.provider.Settings;
import android.util.ArrayMap;
import android.util.ArraySet;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.Set;
import lineageos.providers.LineageSettings;
public class SettingsHelper {
private static final String SETTINGS_GLOBAL = Settings.Global.CONTENT_URI.toString();
private static final String SETTINGS_SECURE = Settings.Secure.CONTENT_URI.toString();
private static final String SETTINGS_SYSTEM = Settings.System.CONTENT_URI.toString();
private static final String LINEAGESETTINGS_GLOBAL = LineageSettings.Global.CONTENT_URI.toString();
private static final String LINEAGESETTINGS_SECURE = LineageSettings.Secure.CONTENT_URI.toString();
private static final String LINEAGESETTINGS_SYSTEM = LineageSettings.System.CONTENT_URI.toString();
private static SettingsHelper sInstance;
private final Context mContext;
private final Observatory mObservatory;
private SettingsHelper(Context context) {
mContext = context;
mObservatory = new Observatory(context, new Handler());
}
public static synchronized SettingsHelper get(Context context) {
if (sInstance == null) {
sInstance = new SettingsHelper(context);
}
return sInstance;
}
public String getString(Uri settingsUri) {
final String uri = settingsUri.toString();
final ContentResolver resolver = mContext.getContentResolver();
if (uri.startsWith(SETTINGS_SECURE)) {
return Settings.Secure.getString(resolver, uri.substring(SETTINGS_SECURE.length()));
} else if (uri.startsWith(SETTINGS_SYSTEM)) {
return Settings.System.getString(resolver, uri.substring(SETTINGS_SYSTEM.length()));
} else if (uri.startsWith(SETTINGS_GLOBAL)) {
return Settings.Global.getString(resolver, uri.substring(SETTINGS_GLOBAL.length()));
} else if (uri.startsWith(LINEAGESETTINGS_SECURE)) {
return LineageSettings.Secure.getString(resolver, uri.substring(LINEAGESETTINGS_SECURE.length()));
} else if (uri.startsWith(LINEAGESETTINGS_SYSTEM)) {
return LineageSettings.System.getString(resolver, uri.substring(LINEAGESETTINGS_SYSTEM.length()));
} else if (uri.startsWith(LINEAGESETTINGS_GLOBAL)) {
return LineageSettings.Global.getString(resolver, uri.substring(LINEAGESETTINGS_GLOBAL.length()));
}
return null;
}
public int getInt(Uri settingsUri, int def) {
final String uri = settingsUri.toString();
final ContentResolver resolver = mContext.getContentResolver();
if (uri.startsWith(SETTINGS_SECURE)) {
return Settings.Secure.getInt(resolver, uri.substring(SETTINGS_SECURE.length()), def);
} else if (uri.startsWith(SETTINGS_SYSTEM)) {
return Settings.System.getInt(resolver, uri.substring(SETTINGS_SYSTEM.length()), def);
} else if (uri.startsWith(SETTINGS_GLOBAL)) {
return Settings.Global.getInt(resolver, uri.substring(SETTINGS_GLOBAL.length()), def);
} else if (uri.startsWith(LINEAGESETTINGS_SECURE)) {
return LineageSettings.Secure.getInt(resolver, uri.substring(LINEAGESETTINGS_SECURE.length()), def);
} else if (uri.startsWith(LINEAGESETTINGS_SYSTEM)) {
return LineageSettings.System.getInt(resolver, uri.substring(LINEAGESETTINGS_SYSTEM.length()), def);
} else if (uri.startsWith(LINEAGESETTINGS_GLOBAL)) {
return LineageSettings.Global.getInt(resolver, uri.substring(LINEAGESETTINGS_GLOBAL.length()), def);
}
return def;
}
public boolean getBoolean(Uri settingsUri, boolean def) {
int value = getInt(settingsUri, def ? 1 : 0);
return value == 1;
}
public void putString(Uri settingsUri, String value) {
final String uri = settingsUri.toString();
final ContentResolver resolver = mContext.getContentResolver();
if (uri.startsWith(SETTINGS_SECURE)) {
Settings.Secure.putString(resolver, uri.substring(SETTINGS_SECURE.length()), value);
} else if (uri.startsWith(SETTINGS_SYSTEM)) {
Settings.System.putString(resolver, uri.substring(SETTINGS_SYSTEM.length()), value);
} else if (uri.startsWith(SETTINGS_GLOBAL)) {
Settings.Global.putString(resolver, uri.substring(SETTINGS_GLOBAL.length()), value);
} else if (uri.startsWith(LINEAGESETTINGS_SECURE)) {
LineageSettings.Secure.putString(resolver, uri.substring(LINEAGESETTINGS_SECURE.length()), value);
} else if (uri.startsWith(LINEAGESETTINGS_SYSTEM)) {
LineageSettings.System.putString(resolver, uri.substring(LINEAGESETTINGS_SYSTEM.length()), value);
} else if (uri.startsWith(LINEAGESETTINGS_GLOBAL)) {
LineageSettings.Global.putString(resolver, uri.substring(LINEAGESETTINGS_GLOBAL.length()), value);
}
}
public void putInt(Uri settingsUri, int value) {
final String uri = settingsUri.toString();
final ContentResolver resolver = mContext.getContentResolver();
if (uri.startsWith(SETTINGS_SECURE)) {
Settings.Secure.putInt(resolver, uri.substring(SETTINGS_SECURE.length()), value);
} else if (uri.startsWith(SETTINGS_SYSTEM)) {
Settings.System.putInt(resolver, uri.substring(SETTINGS_SYSTEM.length()), value);
} else if (uri.startsWith(SETTINGS_GLOBAL)) {
Settings.Global.putInt(resolver, uri.substring(SETTINGS_GLOBAL.length()), value);
} else if (uri.startsWith(LINEAGESETTINGS_SECURE)) {
LineageSettings.Secure.putInt(resolver, uri.substring(LINEAGESETTINGS_SECURE.length()), value);
} else if (uri.startsWith(LINEAGESETTINGS_SYSTEM)) {
LineageSettings.System.putInt(resolver, uri.substring(LINEAGESETTINGS_SYSTEM.length()), value);
} else if (uri.startsWith(LINEAGESETTINGS_GLOBAL)) {
LineageSettings.Global.putInt(resolver, uri.substring(LINEAGESETTINGS_GLOBAL.length()), value);
}
}
public void putBoolean(Uri settingsUri, boolean value) {
putInt(settingsUri, value ? 1 : 0);
}
public void startWatching(OnSettingsChangeListener listener, Uri... settingsUris) {
mObservatory.register(listener, settingsUris);
}
public void stopWatching(OnSettingsChangeListener listener) {
mObservatory.unregister(listener);
}
public interface OnSettingsChangeListener {
public void onSettingsChanged(Uri settingsUri);
}
/**
* A scalable ContentObserver that aggregates all listeners thru a single entrypoint.
*/
private static class Observatory extends ContentObserver {
private final Map<OnSettingsChangeListener, Set<Uri>> mTriggers = new ArrayMap<>();
private final List<Uri> mRefs = new ArrayList<>();
private final Context mContext;
private final ContentResolver mResolver;
public Observatory(Context context, Handler handler) {
super(handler);
mContext = context;
mResolver = mContext.getContentResolver();
}
public void register(OnSettingsChangeListener listener, Uri... contentUris) {
synchronized (mRefs) {
Set<Uri> uris = mTriggers.get(listener);
if (uris == null) {
uris = new ArraySet<Uri>();
mTriggers.put(listener, uris);
}
for (Uri contentUri : contentUris) {
uris.add(contentUri);
if (!mRefs.contains(contentUri)) {
mResolver.registerContentObserver(contentUri, false, this);
listener.onSettingsChanged(null);
}
mRefs.add(contentUri);
}
}
}
public void unregister(OnSettingsChangeListener listener) {
synchronized (mRefs) {
Set<Uri> uris = mTriggers.remove(listener);
if (uris != null) {
for (Uri uri : uris) {
mRefs.remove(uri);
}
}
if (mRefs.size() == 0) {
mResolver.unregisterContentObserver(this);
}
}
}
@Override
public void onChange(boolean selfChange, Uri uri) {
synchronized (mRefs) {
super.onChange(selfChange, uri);
final Set<OnSettingsChangeListener> notify = new ArraySet<>();
for (Map.Entry<OnSettingsChangeListener, Set<Uri>> entry : mTriggers.entrySet()) {
if (entry.getValue().contains(uri)) {
notify.add(entry.getKey());
}
}
for (OnSettingsChangeListener listener : notify) {
listener.onSettingsChanged(uri);
}
}
}
}
}
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