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/*
* 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.bluetooth.BluetoothDevice;
import android.bluetooth.BluetoothIntent;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Bundle;
import android.text.Editable;
import android.text.InputFilter;
import android.text.TextWatcher;
import android.text.InputFilter.LengthFilter;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import com.android.internal.app.AlertActivity;
import com.android.internal.app.AlertController;
import com.android.settings.R;
/**
* BluetoothPinDialog asks the user to enter a PIN for pairing with a remote
* Bluetooth device. It is an activity that appears as a dialog.
*/
public class BluetoothPinDialog extends AlertActivity implements DialogInterface.OnClickListener,
TextWatcher {
private static final String TAG = "BluetoothPinDialog";
private LocalBluetoothManager mLocalManager;
private String mAddress;
private EditText mPinView;
private Button mOkButton;
private static final String INSTANCE_KEY_PAIRING_CANCELED = "received_pairing_canceled";
private boolean mReceivedPairingCanceled;
private BroadcastReceiver mReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
if (!BluetoothIntent.PAIRING_CANCEL_ACTION.equals(intent.getAction())) {
return;
}
String address = intent.getStringExtra(BluetoothIntent.ADDRESS);
if (address == null || address.equals(mAddress)) {
onReceivedPairingCanceled();
}
}
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Intent intent = getIntent();
if (!intent.getAction().equals(BluetoothIntent.PAIRING_REQUEST_ACTION))
{
Log.e(TAG,
"Error: this activity may be started only with intent " +
BluetoothIntent.PAIRING_REQUEST_ACTION);
finish();
}
mLocalManager = LocalBluetoothManager.getInstance(this);
mAddress = intent.getStringExtra(BluetoothIntent.ADDRESS);
// Set up the "dialog"
final AlertController.AlertParams p = mAlertParams;
p.mIconId = android.R.drawable.ic_dialog_info;
p.mTitle = getString(R.string.bluetooth_pin_entry);
p.mView = createView();
p.mPositiveButtonText = getString(android.R.string.ok);
p.mPositiveButtonListener = this;
p.mNegativeButtonText = getString(android.R.string.cancel);
p.mNegativeButtonListener = this;
setupAlert();
mOkButton = mAlert.getButton(DialogInterface.BUTTON_POSITIVE);
mOkButton.setEnabled(false);
/*
* Leave this registered through pause/resume since we still want to
* finish the activity in the background if pairing is canceled.
*/
registerReceiver(mReceiver, new IntentFilter(BluetoothIntent.PAIRING_CANCEL_ACTION));
}
@Override
protected void onRestoreInstanceState(Bundle savedInstanceState) {
super.onRestoreInstanceState(savedInstanceState);
mReceivedPairingCanceled = savedInstanceState.getBoolean(INSTANCE_KEY_PAIRING_CANCELED);
if (mReceivedPairingCanceled) {
onReceivedPairingCanceled();
}
}
@Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
outState.putBoolean(INSTANCE_KEY_PAIRING_CANCELED, mReceivedPairingCanceled);
}
@Override
protected void onDestroy() {
super.onDestroy();
unregisterReceiver(mReceiver);
}
private View createView() {
View view = getLayoutInflater().inflate(R.layout.bluetooth_pin_entry, null);
String name = mLocalManager.getLocalDeviceManager().getName(mAddress);
TextView messageView = (TextView) view.findViewById(R.id.message);
messageView.setText(getString(R.string.bluetooth_enter_pin_msg, name));
mPinView = (EditText) view.findViewById(R.id.text);
mPinView.addTextChangedListener(this);
// Maximum of 10 characters in a PIN
mPinView.setFilters(new InputFilter[] { new LengthFilter(10) });
return view;
}
public void afterTextChanged(Editable s) {
if (s.length() > 0) {
mOkButton.setEnabled(true);
}
}
private void onReceivedPairingCanceled() {
mReceivedPairingCanceled = true;
TextView messageView = (TextView) findViewById(R.id.message);
messageView.setText(getString(R.string.bluetooth_pairing_error_message,
mLocalManager.getLocalDeviceManager().getName(mAddress)));
mPinView.setEnabled(false);
mPinView.clearFocus();
mPinView.removeTextChangedListener(this);
mAlert.getButton(DialogInterface.BUTTON_POSITIVE).setEnabled(false);
}
private void onPair(String pin) {
byte[] pinBytes = BluetoothDevice.convertPinToBytes(pin);
if (pinBytes == null) {
return;
}
mLocalManager.getBluetoothManager().setPin(mAddress, pinBytes);
}
private void onCancel() {
mLocalManager.getBluetoothManager().cancelBondProcess(mAddress);
}
public void onClick(DialogInterface dialog, int which) {
switch (which) {
case DialogInterface.BUTTON_POSITIVE:
onPair(mPinView.getText().toString());
break;
case DialogInterface.BUTTON_NEGATIVE:
onCancel();
break;
}
}
/* Not used */
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
/* Not used */
public void onTextChanged(CharSequence s, int start, int before, int count) {
}
}
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