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/*
* Copyright (C) 2017 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.bluetooth;
import android.bluetooth.BluetoothAdapter;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import androidx.annotation.VisibleForTesting;
import androidx.preference.Preference;
import androidx.preference.PreferenceScreen;
import android.text.BidiFormatter;
import android.text.TextUtils;
import android.util.Log;
import com.android.settings.R;
import com.android.settings.core.BasePreferenceController;
import com.android.settingslib.bluetooth.LocalBluetoothAdapter;
import com.android.settingslib.bluetooth.LocalBluetoothManager;
import com.android.settingslib.core.lifecycle.LifecycleObserver;
import com.android.settingslib.core.lifecycle.events.OnStart;
import com.android.settingslib.core.lifecycle.events.OnStop;
/**
* Controller that shows and updates the bluetooth device name
*/
public class BluetoothDeviceNamePreferenceController extends BasePreferenceController implements
LifecycleObserver, OnStart, OnStop {
private static final String TAG = "BluetoothNamePrefCtrl";
@VisibleForTesting
Preference mPreference;
private LocalBluetoothManager mLocalManager;
private LocalBluetoothAdapter mLocalAdapter;
/**
* Constructor exclusively used for Slice.
*/
public BluetoothDeviceNamePreferenceController(Context context, String preferenceKey) {
super(context, preferenceKey);
mLocalManager = Utils.getLocalBtManager(context);
if (mLocalManager == null) {
Log.e(TAG, "Bluetooth is not supported on this device");
return;
}
mLocalAdapter = mLocalManager.getBluetoothAdapter();
}
@VisibleForTesting
BluetoothDeviceNamePreferenceController(Context context, LocalBluetoothAdapter localAdapter,
String preferenceKey) {
super(context, preferenceKey);
mLocalAdapter = localAdapter;
}
@Override
public void displayPreference(PreferenceScreen screen) {
mPreference = screen.findPreference(getPreferenceKey());
super.displayPreference(screen);
}
@Override
public void onStart() {
mContext.registerReceiver(mReceiver,
new IntentFilter(BluetoothAdapter.ACTION_LOCAL_NAME_CHANGED));
}
@Override
public void onStop() {
mContext.unregisterReceiver(mReceiver);
}
@Override
public int getAvailabilityStatus() {
return mLocalAdapter != null ? AVAILABLE : UNSUPPORTED_ON_DEVICE;
}
@Override
public void updateState(Preference preference) {
updateDeviceName(preference);
}
@Override
public CharSequence getSummary() {
String deviceName = getDeviceName();
if (TextUtils.isEmpty(deviceName)) {
return super.getSummary();
}
return TextUtils.expandTemplate(
mContext.getText(R.string.bluetooth_device_name_summary),
BidiFormatter.getInstance().unicodeWrap(deviceName)).toString();
}
/**
* Create preference to show bluetooth device name
*
* @param screen to add the preference in
* @param order to decide position of the preference
* @return bluetooth preference that created in this method
*/
public Preference createBluetoothDeviceNamePreference(PreferenceScreen screen, int order) {
mPreference = new Preference(screen.getContext());
mPreference.setOrder(order);
mPreference.setKey(getPreferenceKey());
screen.addPreference(mPreference);
return mPreference;
}
/**
* Update device summary with {@code deviceName}, where {@code deviceName} has accent color
*
* @param preference to set the summary for
*/
protected void updateDeviceName(final Preference preference) {
preference.setSelectable(false);
preference.setSummary(getSummary());
}
protected String getDeviceName() {
return mLocalAdapter.getName();
}
/**
* Receiver that listens to {@link BluetoothAdapter#ACTION_LOCAL_NAME_CHANGED} and updates the
* device name if possible
*/
@VisibleForTesting
final BroadcastReceiver mReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
final String action = intent.getAction();
if (TextUtils.equals(action, BluetoothAdapter.ACTION_LOCAL_NAME_CHANGED)) {
if (mPreference != null && mLocalAdapter != null && mLocalAdapter.isEnabled()) {
updateDeviceName(mPreference);
}
}
}
};
}
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