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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.app.Fragment;
import android.bluetooth.BluetoothAdapter;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.support.v7.preference.Preference;
import android.support.v7.preference.PreferenceScreen;
import android.text.Spannable;
import android.text.SpannableString;
import android.text.TextUtils;
import android.text.style.ForegroundColorSpan;
import android.util.Log;
import com.android.internal.annotations.VisibleForTesting;
import com.android.settings.R;
import com.android.settings.core.PreferenceController;
import com.android.settingslib.bluetooth.LocalBluetoothAdapter;
import com.android.settingslib.bluetooth.LocalBluetoothManager;
import com.android.settingslib.core.lifecycle.Lifecycle;
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 PreferenceController implements
LifecycleObserver, OnStart, OnStop {
private static final String TAG = "BluetoothNamePrefCtrl";
public static final String KEY_DEVICE_NAME = "device_name";
private int mAccentColor;
private Fragment mFragment;
private LocalBluetoothManager mLocalManager;
private LocalBluetoothAdapter mLocalAdapter;
private Preference mPreference;
public BluetoothDeviceNamePreferenceController(Context context, Fragment fragment,
Lifecycle lifecycle) {
this(context, fragment, (LocalBluetoothAdapter) null);
mLocalManager = Utils.getLocalBtManager(context);
if (mLocalManager == null) {
Log.e(TAG, "Bluetooth is not supported on this device");
return;
}
mLocalAdapter = mLocalManager.getBluetoothAdapter();
lifecycle.addObserver(this);
}
@VisibleForTesting
BluetoothDeviceNamePreferenceController(Context context, Fragment fragment,
LocalBluetoothAdapter localAdapter) {
super(context);
mAccentColor = com.android.settingslib.Utils.getColorAccent(context);
mFragment = fragment;
mLocalAdapter = localAdapter;
}
@Override
public void displayPreference(PreferenceScreen screen) {
mPreference = screen.findPreference(KEY_DEVICE_NAME);
}
@Override
public void onStart() {
mContext.registerReceiver(mReceiver,
new IntentFilter(BluetoothAdapter.ACTION_LOCAL_NAME_CHANGED));
}
@Override
public void onStop() {
mContext.unregisterReceiver(mReceiver);
}
@Override
public boolean isAvailable() {
return mLocalAdapter != null;
}
@Override
public String getPreferenceKey() {
return KEY_DEVICE_NAME;
}
@Override
public void updateState(Preference preference) {
updateDeviceName(preference, mLocalAdapter.getName());
}
@Override
public boolean handlePreferenceTreeClick(Preference preference) {
if (KEY_DEVICE_NAME.equals(preference.getKey())) {
LocalDeviceNameDialogFragment.newInstance()
.show(mFragment.getFragmentManager(), LocalDeviceNameDialogFragment.TAG);
return true;
}
return false;
}
/**
* 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(KEY_DEVICE_NAME);
screen.addPreference(mPreference);
return mPreference;
}
/**
* Update device summary with {@code deviceName}, where {@code deviceName} has accent color
*
* @param preference to set the summary for
* @param deviceName bluetooth device name to show in the summary
*/
public void updateDeviceName(final Preference preference, final String deviceName) {
if (deviceName == null) {
// TODO: show error message in preference subtitle
return;
}
final Spannable spannableName = new SpannableString(deviceName);
spannableName.setSpan(new ForegroundColorSpan(mAccentColor), 0,
spannableName.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
final CharSequence summary = TextUtils.expandTemplate(
mContext.getText(R.string.bluetooth_device_name_summary), spannableName);
preference.setSummary(summary);
}
/**
* 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, mLocalAdapter.getName());
}
}
}
};
}
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