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/*
* Copyright (C) 2009 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.settings;
import android.app.AlertDialog;
import android.app.Dialog;
import android.app.backup.IBackupManager;
import android.content.ContentResolver;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.Bundle;
import android.os.RemoteException;
import android.os.ServiceManager;
import android.os.UserManager;
import android.preference.Preference;
import android.preference.Preference.OnPreferenceChangeListener;
import android.preference.PreferenceScreen;
import android.preference.SwitchPreference;
import android.provider.Settings;
/**
* Gesture lock pattern settings.
*/
public class PrivacySettings extends SettingsPreferenceFragment implements
DialogInterface.OnClickListener {
// Vendor specific
private static final String GSETTINGS_PROVIDER = "com.google.settings";
private static final String BACKUP_CATEGORY = "backup_category";
private static final String BACKUP_DATA = "backup_data";
private static final String AUTO_RESTORE = "auto_restore";
private static final String CONFIGURE_ACCOUNT = "configure_account";
private static final String PERSONAL_DATA_CATEGORY = "personal_data_category";
private IBackupManager mBackupManager;
private SwitchPreference mBackup;
private SwitchPreference mAutoRestore;
private Dialog mConfirmDialog;
private PreferenceScreen mConfigure;
private static final int DIALOG_ERASE_BACKUP = 2;
private int mDialogType;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
addPreferencesFromResource(R.xml.privacy_settings);
final PreferenceScreen screen = getPreferenceScreen();
mBackupManager = IBackupManager.Stub.asInterface(
ServiceManager.getService(Context.BACKUP_SERVICE));
mBackup = (SwitchPreference) screen.findPreference(BACKUP_DATA);
mBackup.setOnPreferenceChangeListener(preferenceChangeListener);
mAutoRestore = (SwitchPreference) screen.findPreference(AUTO_RESTORE);
mAutoRestore.setOnPreferenceChangeListener(preferenceChangeListener);
mConfigure = (PreferenceScreen) screen.findPreference(CONFIGURE_ACCOUNT);
if (UserManager.get(getActivity()).hasUserRestriction(
UserManager.DISALLOW_FACTORY_RESET)) {
screen.removePreference(findPreference(PERSONAL_DATA_CATEGORY));
}
// Vendor specific
if (getActivity().getPackageManager().
resolveContentProvider(GSETTINGS_PROVIDER, 0) == null) {
screen.removePreference(findPreference(BACKUP_CATEGORY));
}
updateToggles();
}
@Override
public void onResume() {
super.onResume();
// Refresh UI
updateToggles();
}
@Override
public void onStop() {
if (mConfirmDialog != null && mConfirmDialog.isShowing()) {
mConfirmDialog.dismiss();
}
mConfirmDialog = null;
mDialogType = 0;
super.onStop();
}
private OnPreferenceChangeListener preferenceChangeListener = new OnPreferenceChangeListener() {
@Override
public boolean onPreferenceChange(Preference preference, Object newValue) {
if (!(preference instanceof SwitchPreference)) {
return true;
}
boolean nextValue = (Boolean) newValue;
boolean result = false;
if (preference == mBackup) {
if (nextValue == false) {
// Don't change Switch status until user makes choice in dialog
// so return false here.
showEraseBackupDialog();
} else {
setBackupEnabled(true);
result = true;
}
} else if (preference == mAutoRestore) {
try {
mBackupManager.setAutoRestore(nextValue);
result = true;
} catch (RemoteException e) {
mAutoRestore.setChecked(!nextValue);
}
}
return result;
}
};
private void showEraseBackupDialog() {
mDialogType = DIALOG_ERASE_BACKUP;
CharSequence msg = getResources().getText(R.string.backup_erase_dialog_message);
// TODO: DialogFragment?
mConfirmDialog = new AlertDialog.Builder(getActivity()).setMessage(msg)
.setTitle(R.string.backup_erase_dialog_title)
.setPositiveButton(android.R.string.ok, this)
.setNegativeButton(android.R.string.cancel, this)
.show();
}
/*
* Creates toggles for each available location provider
*/
private void updateToggles() {
ContentResolver res = getContentResolver();
boolean backupEnabled = false;
Intent configIntent = null;
String configSummary = null;
try {
backupEnabled = mBackupManager.isBackupEnabled();
String transport = mBackupManager.getCurrentTransport();
configIntent = mBackupManager.getConfigurationIntent(transport);
configSummary = mBackupManager.getDestinationString(transport);
} catch (RemoteException e) {
// leave it 'false' and disable the UI; there's no backup manager
mBackup.setEnabled(false);
}
mBackup.setChecked(backupEnabled);
mAutoRestore.setChecked(Settings.Secure.getInt(res,
Settings.Secure.BACKUP_AUTO_RESTORE, 1) == 1);
mAutoRestore.setEnabled(backupEnabled);
final boolean configureEnabled = (configIntent != null) && backupEnabled;
mConfigure.setEnabled(configureEnabled);
mConfigure.setIntent(configIntent);
setConfigureSummary(configSummary);
}
private void setConfigureSummary(String summary) {
if (summary != null) {
mConfigure.setSummary(summary);
} else {
mConfigure.setSummary(R.string.backup_configure_account_default_summary);
}
}
private void updateConfigureSummary() {
try {
String transport = mBackupManager.getCurrentTransport();
String summary = mBackupManager.getDestinationString(transport);
setConfigureSummary(summary);
} catch (RemoteException e) {
// Not much we can do here
}
}
@Override
public void onClick(DialogInterface dialog, int which) {
// Dialog is triggered before Switch status change, that means marking the Switch to
// true in showEraseBackupDialog() method will be override by following status change.
// So we do manual switching here due to users' response.
if (mDialogType == DIALOG_ERASE_BACKUP) {
// Accept turning off backup
if (which == DialogInterface.BUTTON_POSITIVE) {
setBackupEnabled(false);
} else if (which == DialogInterface.BUTTON_NEGATIVE) {
// Reject turning off backup
setBackupEnabled(true);
}
updateConfigureSummary();
}
mDialogType = 0;
}
/**
* Informs the BackupManager of a change in backup state - if backup is disabled,
* the data on the server will be erased.
* @param enable whether to enable backup
*/
private void setBackupEnabled(boolean enable) {
if (mBackupManager != null) {
try {
mBackupManager.setBackupEnabled(enable);
} catch (RemoteException e) {
mBackup.setChecked(!enable);
mAutoRestore.setEnabled(!enable);
return;
}
}
mBackup.setChecked(enable);
mAutoRestore.setEnabled(enable);
mConfigure.setEnabled(enable);
}
@Override
protected int getHelpResource() {
return R.string.help_url_backup_reset;
}
}
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