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/*
* Copyright (C) 2018 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.connecteddevice;
import android.bluetooth.BluetoothAdapter;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.pm.PackageManager;
import android.text.BidiFormatter;
import android.text.TextUtils;
import androidx.annotation.VisibleForTesting;
import androidx.preference.PreferenceScreen;
import com.android.settings.R;
import com.android.settings.bluetooth.AlwaysDiscoverable;
import com.android.settings.bluetooth.Utils;
import com.android.settings.core.BasePreferenceController;
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;
import com.android.settingslib.widget.FooterPreference;
/**
* Controller that shows and updates the bluetooth device name
*/
public class DiscoverableFooterPreferenceController extends BasePreferenceController
implements LifecycleObserver, OnStart, OnStop {
private static final String KEY = "discoverable_footer_preference";
@VisibleForTesting
BroadcastReceiver mBluetoothChangedReceiver;
@VisibleForTesting
LocalBluetoothManager mLocalManager;
private BluetoothAdapter mBluetoothAdapter;
private AlwaysDiscoverable mAlwaysDiscoverable;
private FooterPreference mPreference;
public DiscoverableFooterPreferenceController(Context context, String key) {
super(context, key);
mLocalManager = Utils.getLocalBtManager(context);
if (mLocalManager == null) {
return;
}
mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
mAlwaysDiscoverable = new AlwaysDiscoverable(context);
initReceiver();
}
@Override
public void displayPreference(PreferenceScreen screen) {
super.displayPreference(screen);
mPreference = screen.findPreference(getPreferenceKey());
}
@Override
public int getAvailabilityStatus() {
return mContext.getPackageManager().hasSystemFeature(PackageManager.FEATURE_BLUETOOTH)
? AVAILABLE_UNSEARCHABLE
: UNSUPPORTED_ON_DEVICE;
}
@Override
public void onStart() {
if (mLocalManager == null) {
return;
}
mContext.registerReceiver(mBluetoothChangedReceiver,
new IntentFilter(BluetoothAdapter.ACTION_STATE_CHANGED));
mAlwaysDiscoverable.start();
updateFooterPreferenceTitle(mBluetoothAdapter.getState());
}
@Override
public void onStop() {
if (mLocalManager == null) {
return;
}
mContext.unregisterReceiver(mBluetoothChangedReceiver);
mAlwaysDiscoverable.stop();
}
private void updateFooterPreferenceTitle(int bluetoothState) {
if (bluetoothState == BluetoothAdapter.STATE_ON) {
mPreference.setTitle(getPreferenceTitle());
} else {
mPreference.setTitle(R.string.bluetooth_off_footer);
}
}
private CharSequence getPreferenceTitle() {
final String deviceName = mBluetoothAdapter.getName();
if (TextUtils.isEmpty(deviceName)) {
return null;
}
return TextUtils.expandTemplate(
mContext.getText(R.string.bluetooth_device_name_summary),
BidiFormatter.getInstance().unicodeWrap(deviceName));
}
private void initReceiver() {
mBluetoothChangedReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
if (intent.getAction().equals(BluetoothAdapter.ACTION_STATE_CHANGED)) {
final int state = intent.getIntExtra(BluetoothAdapter.EXTRA_STATE,
BluetoothAdapter.ERROR);
updateFooterPreferenceTitle(state);
}
}
};
}
}
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