135 lines
4.3 KiB
Java
135 lines
4.3 KiB
Java
/*
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* Copyright (C) 2008 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.settings.bluetooth;
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import android.app.AlertDialog;
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import android.app.Dialog;
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import android.bluetooth.BluetoothAdapter;
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import android.content.BroadcastReceiver;
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import android.content.Context;
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import android.content.Intent;
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import android.content.IntentFilter;
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import android.preference.EditTextPreference;
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import android.text.Editable;
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import android.text.TextWatcher;
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import android.util.AttributeSet;
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import android.widget.Button;
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import android.widget.EditText;
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/**
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* BluetoothNamePreference is the preference type for editing the device's
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* Bluetooth name. It asks the user for a name, and persists it via the
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* Bluetooth API.
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*/
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public class BluetoothNamePreference extends EditTextPreference implements TextWatcher {
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private static final String TAG = "BluetoothNamePreference";
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private LocalBluetoothManager mLocalManager;
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private BroadcastReceiver mReceiver = new BroadcastReceiver() {
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@Override
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public void onReceive(Context context, Intent intent) {
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String action = intent.getAction();
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if (action.equals(BluetoothAdapter.ACTION_LOCAL_NAME_CHANGED)) {
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setSummaryToName();
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} else if (action.equals(BluetoothAdapter.ACTION_STATE_CHANGED) &&
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(intent.getIntExtra(BluetoothAdapter.EXTRA_STATE, BluetoothAdapter.ERROR) ==
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BluetoothAdapter.STATE_ON)) {
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setSummaryToName();
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}
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}
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};
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public BluetoothNamePreference(Context context, AttributeSet attrs) {
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super(context, attrs);
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mLocalManager = LocalBluetoothManager.getInstance(context);
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setSummaryToName();
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}
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public void resume() {
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IntentFilter filter = new IntentFilter();
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filter.addAction(BluetoothAdapter.ACTION_STATE_CHANGED);
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filter.addAction(BluetoothAdapter.ACTION_LOCAL_NAME_CHANGED);
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getContext().registerReceiver(mReceiver, filter);
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// Make sure the OK button is disabled (if necessary) after rotation
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EditText et = getEditText();
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if (et != null) {
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et.addTextChangedListener(this);
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Dialog d = getDialog();
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if (d instanceof AlertDialog) {
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Button b = ((AlertDialog) d).getButton(AlertDialog.BUTTON_POSITIVE);
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b.setEnabled(et.getText().length() > 0);
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}
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}
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}
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public void pause() {
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EditText et = getEditText();
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if (et != null) {
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et.removeTextChangedListener(this);
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}
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getContext().unregisterReceiver(mReceiver);
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}
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private void setSummaryToName() {
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BluetoothAdapter adapter = mLocalManager.getBluetoothAdapter();
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if (adapter.isEnabled()) {
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setSummary(adapter.getName());
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}
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}
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@Override
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protected boolean persistString(String value) {
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BluetoothAdapter adapter = mLocalManager.getBluetoothAdapter();
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adapter.setName(value);
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return true;
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}
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@Override
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protected void onClick() {
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super.onClick();
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// The dialog should be created by now
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EditText et = getEditText();
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if (et != null) {
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et.setText(mLocalManager.getBluetoothAdapter().getName());
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}
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}
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// TextWatcher interface
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public void afterTextChanged(Editable s) {
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Dialog d = getDialog();
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if (d instanceof AlertDialog) {
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((AlertDialog) d).getButton(AlertDialog.BUTTON_POSITIVE).setEnabled(s.length() > 0);
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}
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}
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// TextWatcher interface
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public void beforeTextChanged(CharSequence s, int start, int count, int after) {
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// not used
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}
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// TextWatcher interface
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public void onTextChanged(CharSequence s, int start, int before, int count) {
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// not used
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}
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}
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