| /* |
| * Copyright (C) 2008 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.AlertDialog; |
| import android.app.Dialog; |
| |
| import android.bluetooth.BluetoothAdapter; |
| import android.content.BroadcastReceiver; |
| import android.content.Context; |
| import android.content.Intent; |
| import android.content.IntentFilter; |
| import android.preference.EditTextPreference; |
| import android.text.Editable; |
| import android.text.InputFilter; |
| import android.text.TextWatcher; |
| import android.text.InputFilter.LengthFilter; |
| import android.util.AttributeSet; |
| import android.widget.Button; |
| import android.widget.EditText; |
| |
| /** |
| * BluetoothNamePreference is the preference type for editing the device's |
| * Bluetooth name. It asks the user for a name, and persists it via the |
| * Bluetooth API. |
| */ |
| public class BluetoothNamePreference extends EditTextPreference implements TextWatcher { |
| private static final String TAG = "BluetoothNamePreference"; |
| // TODO(): Investigate bluetoothd/dbus crash when length is set to 248, limit as per spec. |
| private static final int BLUETOOTH_NAME_MAX_LENGTH = 200; |
| |
| private LocalBluetoothManager mLocalManager; |
| |
| private BroadcastReceiver mReceiver = new BroadcastReceiver() { |
| @Override |
| public void onReceive(Context context, Intent intent) { |
| String action = intent.getAction(); |
| if (action.equals(BluetoothAdapter.ACTION_LOCAL_NAME_CHANGED)) { |
| setSummaryToName(); |
| } else if (action.equals(BluetoothAdapter.ACTION_STATE_CHANGED) && |
| (intent.getIntExtra(BluetoothAdapter.EXTRA_STATE, BluetoothAdapter.ERROR) == |
| BluetoothAdapter.STATE_ON)) { |
| setSummaryToName(); |
| } |
| } |
| }; |
| |
| public BluetoothNamePreference(Context context, AttributeSet attrs) { |
| super(context, attrs); |
| |
| mLocalManager = LocalBluetoothManager.getInstance(context); |
| |
| setSummaryToName(); |
| } |
| |
| public void resume() { |
| IntentFilter filter = new IntentFilter(); |
| filter.addAction(BluetoothAdapter.ACTION_STATE_CHANGED); |
| filter.addAction(BluetoothAdapter.ACTION_LOCAL_NAME_CHANGED); |
| getContext().registerReceiver(mReceiver, filter); |
| |
| // Make sure the OK button is disabled (if necessary) after rotation |
| EditText et = getEditText(); |
| et.setFilters(new InputFilter[] {new LengthFilter(BLUETOOTH_NAME_MAX_LENGTH)}); |
| if (et != null) { |
| et.addTextChangedListener(this); |
| Dialog d = getDialog(); |
| if (d instanceof AlertDialog) { |
| Button b = ((AlertDialog) d).getButton(AlertDialog.BUTTON_POSITIVE); |
| b.setEnabled(et.getText().length() > 0); |
| } |
| } |
| } |
| |
| public void pause() { |
| EditText et = getEditText(); |
| if (et != null) { |
| et.removeTextChangedListener(this); |
| } |
| getContext().unregisterReceiver(mReceiver); |
| } |
| |
| private void setSummaryToName() { |
| BluetoothAdapter adapter = mLocalManager.getBluetoothAdapter(); |
| if (adapter.isEnabled()) { |
| setSummary(adapter.getName()); |
| } |
| } |
| |
| @Override |
| protected boolean persistString(String value) { |
| BluetoothAdapter adapter = mLocalManager.getBluetoothAdapter(); |
| adapter.setName(value); |
| return true; |
| } |
| |
| @Override |
| protected void onClick() { |
| super.onClick(); |
| |
| // The dialog should be created by now |
| EditText et = getEditText(); |
| if (et != null) { |
| et.setText(mLocalManager.getBluetoothAdapter().getName()); |
| } |
| } |
| |
| // TextWatcher interface |
| public void afterTextChanged(Editable s) { |
| Dialog d = getDialog(); |
| if (d instanceof AlertDialog) { |
| ((AlertDialog) d).getButton(AlertDialog.BUTTON_POSITIVE).setEnabled(s.length() > 0); |
| } |
| } |
| |
| // TextWatcher interface |
| public void beforeTextChanged(CharSequence s, int start, int count, int after) { |
| // not used |
| } |
| |
| // TextWatcher interface |
| public void onTextChanged(CharSequence s, int start, int before, int count) { |
| // not used |
| } |
| } |