/*
* Copyright (C) 2008 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.providers.settings;
import java.util.Locale;
import android.app.ActivityManagerNative;
import android.app.IActivityManager;
import android.app.backup.BackupDataInput;
import android.app.backup.IBackupManager;
import android.content.ContentResolver;
import android.content.Context;
import android.content.IContentService;
import android.content.res.Configuration;
import android.location.LocationManager;
import android.media.AudioManager;
import android.os.IPowerManager;
import android.os.RemoteException;
import android.os.ServiceManager;
import android.provider.Settings;
import android.text.TextUtils;
import android.util.Log;
public class SettingsHelper {
private static final String TAG = "SettingsHelper";
private Context mContext;
private AudioManager mAudioManager;
private IContentService mContentService;
private IPowerManager mPowerManager;
private boolean mSilent;
private boolean mVibrate;
public SettingsHelper(Context context) {
mContext = context;
mAudioManager = (AudioManager) context
.getSystemService(Context.AUDIO_SERVICE);
mContentService = ContentResolver.getContentService();
mPowerManager = IPowerManager.Stub.asInterface(
ServiceManager.getService("power"));
}
/**
* Sets the property via a call to the appropriate API, if any, and returns
* whether or not the setting should be saved to the database as well.
* @param name the name of the setting
* @param value the string value of the setting
* @return whether to continue with writing the value to the database. In
* some cases the data will be written by the call to the appropriate API,
* and in some cases the property value needs to be modified before setting.
*/
public boolean restoreValue(String name, String value) {
if (Settings.System.SCREEN_BRIGHTNESS.equals(name)) {
setBrightness(Integer.parseInt(value));
} else if (Settings.System.SOUND_EFFECTS_ENABLED.equals(name)) {
setSoundEffects(Integer.parseInt(value) == 1);
} else if (Settings.Secure.LOCATION_PROVIDERS_ALLOWED.equals(name)) {
setGpsLocation(value);
return false;
} else if (Settings.Secure.BACKUP_AUTO_RESTORE.equals(name)) {
setAutoRestore(Integer.parseInt(value) == 1);
}
return true;
}
private void setAutoRestore(boolean enabled) {
try {
IBackupManager bm = IBackupManager.Stub.asInterface(
ServiceManager.getService(Context.BACKUP_SERVICE));
if (bm != null) {
bm.setAutoRestore(enabled);
}
} catch (RemoteException e) {}
}
private void setGpsLocation(String value) {
final String GPS = LocationManager.GPS_PROVIDER;
boolean enabled =
GPS.equals(value) ||
value.startsWith(GPS + ",") ||
value.endsWith("," + GPS) ||
value.contains("," + GPS + ",");
Settings.Secure.setLocationProviderEnabled(
mContext.getContentResolver(), GPS, enabled);
}
private void setSoundEffects(boolean enable) {
if (enable) {
mAudioManager.loadSoundEffects();
} else {
mAudioManager.unloadSoundEffects();
}
}
private void setBrightness(int brightness) {
try {
IPowerManager power = IPowerManager.Stub.asInterface(
ServiceManager.getService("power"));
if (power != null) {
power.setBacklightBrightness(brightness);
}
} catch (RemoteException doe) {
}
}
private void setRingerMode() {
if (mSilent) {
mAudioManager.setRingerMode(mVibrate ? AudioManager.RINGER_MODE_VIBRATE :
AudioManager.RINGER_MODE_SILENT);
} else {
mAudioManager.setRingerMode(AudioManager.RINGER_MODE_NORMAL);
mAudioManager.setVibrateSetting(AudioManager.VIBRATE_TYPE_RINGER,
mVibrate ? AudioManager.VIBRATE_SETTING_ON
: AudioManager.VIBRATE_SETTING_OFF);
}
}
byte[] getLocaleData() {
Configuration conf = mContext.getResources().getConfiguration();
final Locale loc = conf.locale;
String localeString = loc.getLanguage();
String country = loc.getCountry();
if (!TextUtils.isEmpty(country)) {
localeString += "_" + country;
}
return localeString.getBytes();
}
/**
* Sets the locale specified. Input data is the equivalent of "ll_cc".getBytes(), where
* "ll" is the language code and "cc" is the country code.
* @param data the locale string in bytes.
*/
void setLocaleData(byte[] data, int size) {
// Check if locale was set by the user:
Configuration conf = mContext.getResources().getConfiguration();
Locale loc = conf.locale;
// TODO: The following is not working as intended because the network is forcing a locale
// change after registering. Need to find some other way to detect if the user manually
// changed the locale
if (conf.userSetLocale) return; // Don't change if user set it in the SetupWizard
final String[] availableLocales = mContext.getAssets().getLocales();
String localeCode = new String(data, 0, size);
String language = new String(data, 0, 2);
String country = size > 4 ? new String(data, 3, 2) : "";
loc = null;
for (int i = 0; i < availableLocales.length; i++) {
if (availableLocales[i].equals(localeCode)) {
loc = new Locale(language, country);
break;
}
}
if (loc == null) return; // Couldn't find the saved locale in this version of the software
try {
IActivityManager am = ActivityManagerNative.getDefault();
Configuration config = am.getConfiguration();
config.locale = loc;
// indicate this isn't some passing default - the user wants this remembered
config.userSetLocale = true;
am.updateConfiguration(config);
} catch (RemoteException e) {
// Intentionally left blank
}
}
/**
* Informs the audio service of changes to the settings so that
* they can be re-read and applied.
*/
void applyAudioSettings() {
AudioManager am = new AudioManager(mContext);
am.reloadAudioSettings();
}
}