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/*
* Copyright (C) 2010 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 android.os.Handler;
import android.os.Message;
import android.provider.Settings;
import android.widget.CompoundButton;
import android.widget.Switch;
import android.widget.Toast;
import com.android.internal.logging.MetricsLogger;
import com.android.settings.R;
import com.android.settings.dashboard.GenericSwitchToggle;
import com.android.settings.search.Index;
import com.android.settings.widget.SwitchBar;
import com.android.settingslib.WirelessUtils;
import com.android.settingslib.bluetooth.LocalBluetoothAdapter;
import com.android.settingslib.bluetooth.LocalBluetoothManager;
/**
* BluetoothEnabler is a helper to manage the Bluetooth on/off checkbox
* preference. It turns on/off Bluetooth and ensures the summary of the
* preference reflects the current state.
*/
public final class BluetoothEnabler extends GenericSwitchToggle {
private LocalBluetoothAdapter mLocalAdapter;
private IntentFilter mIntentFilter;
private static final String EVENT_DATA_IS_BT_ON = "is_bluetooth_on";
private static final int EVENT_UPDATE_INDEX = 0;
private Handler mHandler = new Handler() {
@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case EVENT_UPDATE_INDEX:
final boolean isBluetoothOn = msg.getData().getBoolean(EVENT_DATA_IS_BT_ON);
Index.getInstance(mContext).updateFromClassNameResource(
BluetoothSettings.class.getName(), true, isBluetoothOn);
break;
}
}
};
private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
// Broadcast receiver is always running on the UI thread here,
// so we don't need consider thread synchronization.
int state = intent.getIntExtra(BluetoothAdapter.EXTRA_STATE, BluetoothAdapter.ERROR);
handleStateChanged(state);
}
};
public BluetoothEnabler(Context context, SwitchBar switchBar) {
super(context, switchBar);
init();
}
public BluetoothEnabler(Context context, Switch switch_) {
super(context, switch_);
init();
}
private void init() {
LocalBluetoothManager manager = Utils.getLocalBtManager(mContext);
if (manager == null) {
// Bluetooth is not supported
mLocalAdapter = null;
setEnabled(false);
} else {
mLocalAdapter = manager.getBluetoothAdapter();
}
mIntentFilter = new IntentFilter(BluetoothAdapter.ACTION_STATE_CHANGED);
}
public void setupSwitchBar() {
mSwitchBar.show();
}
public void teardownSwitchBar() {
mSwitchBar.hide();
}
@Override
public void resume(Context context) {
super.resume(context);
if (mLocalAdapter == null) {
setEnabled(false);
return;
}
// Bluetooth state is not sticky, so set it manually
handleStateChanged(mLocalAdapter.getBluetoothState());
mContext.registerReceiver(mReceiver, mIntentFilter);
}
@Override
public void pause() {
super.pause();
if (mLocalAdapter == null) {
return;
}
mContext.unregisterReceiver(mReceiver);
}
void handleStateChanged(int state) {
switch (state) {
case BluetoothAdapter.STATE_TURNING_ON:
setEnabled(false);
break;
case BluetoothAdapter.STATE_ON:
setChecked(true);
setEnabled(true);
updateSearchIndex(true);
mLocalAdapter.setScanMode(BluetoothAdapter.SCAN_MODE_CONNECTABLE_DISCOVERABLE);
break;
case BluetoothAdapter.STATE_TURNING_OFF:
setEnabled(false);
break;
case BluetoothAdapter.STATE_OFF:
setChecked(false);
setEnabled(true);
updateSearchIndex(false);
break;
default:
setChecked(false);
setEnabled(true);
updateSearchIndex(false);
}
}
private void updateSearchIndex(boolean isBluetoothOn) {
mHandler.removeMessages(EVENT_UPDATE_INDEX);
Message msg = new Message();
msg.what = EVENT_UPDATE_INDEX;
msg.getData().putBoolean(EVENT_DATA_IS_BT_ON, isBluetoothOn);
mHandler.sendMessage(msg);
}
@Override
public void onSwitchChanged(Switch switchView, boolean isChecked) {
if (mStateMachineEvent) {
return;
}
// Show toast message if Bluetooth is not allowed in airplane mode
if (isChecked &&
!WirelessUtils.isRadioAllowed(mContext, Settings.Global.RADIO_BLUETOOTH)) {
Toast.makeText(mContext, R.string.wifi_in_airplane_mode, Toast.LENGTH_SHORT).show();
// Reset switch to off
setChecked(false);
}
MetricsLogger.action(mContext, MetricsLogger.ACTION_BLUETOOTH_TOGGLE, isChecked);
if (mLocalAdapter != null) {
mLocalAdapter.setBluetoothEnabled(isChecked);
}
setEnabled(false);
}
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
super.onCheckedChanged(buttonView, isChecked);
}
}
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