/*
* 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.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.InputType;
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;
/**
* BluetoothPairingDialog asks the user to enter a PIN / Passkey / simple confirmation
* for pairing with a remote Bluetooth device. It is an activity that appears as a dialog.
*/
public class BluetoothPairingDialog extends AlertActivity implements DialogInterface.OnClickListener,
TextWatcher {
private static final String TAG = "BluetoothPairingDialog";
private final int BLUETOOTH_PIN_MAX_LENGTH = 16;
private final int BLUETOOTH_PASSKEY_MAX_LENGTH = 6;
private LocalBluetoothManager mLocalManager;
private BluetoothDevice mDevice;
private int mType;
private String mPasskey;
private EditText mPairingView;
private Button mOkButton;
private BroadcastReceiver mReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
if (BluetoothDevice.ACTION_BOND_STATE_CHANGED.equals(intent.getAction())) {
int bondState = intent.getIntExtra(BluetoothDevice.EXTRA_BOND_STATE,
BluetoothDevice.ERROR);
if (bondState == BluetoothDevice.BOND_BONDED ||
bondState == BluetoothDevice.BOND_NONE) {
dismissDialog();
}
} else if(BluetoothDevice.ACTION_PAIRING_CANCEL.equals(intent.getAction())) {
BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
if (device == null || device.equals(mDevice)) {
dismissDialog();
}
}
}
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Intent intent = getIntent();
if (!intent.getAction().equals(BluetoothDevice.ACTION_PAIRING_REQUEST))
{
Log.e(TAG,
"Error: this activity may be started only with intent " +
BluetoothDevice.ACTION_PAIRING_REQUEST);
finish();
}
mLocalManager = LocalBluetoothManager.getInstance(this);
mDevice = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
mType = intent.getIntExtra(BluetoothDevice.EXTRA_PAIRING_VARIANT, BluetoothDevice.ERROR);
if (mType == BluetoothDevice.PAIRING_VARIANT_PIN) {
createUserEntryDialog();
} else if (mType == BluetoothDevice.PAIRING_VARIANT_PASSKEY) {
createUserEntryDialog();
} else if (mType == BluetoothDevice.PAIRING_VARIANT_PASSKEY_CONFIRMATION){
int passkey =
intent.getIntExtra(BluetoothDevice.EXTRA_PASSKEY, BluetoothDevice.ERROR);
if (passkey == BluetoothDevice.ERROR) {
Log.e(TAG, "Invalid ConfirmationPasskey received, not showing any dialog");
return;
}
mPasskey = String.format("%06d", passkey);
createConfirmationDialog();
} else if (mType == BluetoothDevice.PAIRING_VARIANT_CONSENT) {
createConsentDialog();
} else if (mType == BluetoothDevice.PAIRING_VARIANT_DISPLAY_PASSKEY) {
int passkey =
intent.getIntExtra(BluetoothDevice.EXTRA_PASSKEY, BluetoothDevice.ERROR);
if (passkey == BluetoothDevice.ERROR) {
Log.e(TAG, "Invalid ConfirmationPasskey received, not showing any dialog");
return;
}
mPasskey = String.format("%06d", passkey);
createDisplayPasskeyDialog();
} else {
Log.e(TAG, "Incorrect pairing type received, not showing any dialog");
}
/*
* 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(BluetoothDevice.ACTION_PAIRING_CANCEL));
registerReceiver(mReceiver, new IntentFilter(BluetoothDevice.ACTION_BOND_STATE_CHANGED));
}
private void createUserEntryDialog() {
final AlertController.AlertParams p = mAlertParams;
p.mIconId = android.R.drawable.ic_dialog_info;
p.mTitle = getString(R.string.bluetooth_pairing_request);
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);
}
private View createView() {
View view = getLayoutInflater().inflate(R.layout.bluetooth_pin_entry, null);
String name = mLocalManager.getCachedDeviceManager().getName(mDevice);
TextView messageView = (TextView) view.findViewById(R.id.message);
mPairingView = (EditText) view.findViewById(R.id.text);
mPairingView.addTextChangedListener(this);
if (mType == BluetoothDevice.PAIRING_VARIANT_PIN) {
messageView.setText(getString(R.string.bluetooth_enter_pin_msg, name));
// Maximum of 16 characters in a PIN adb sync
mPairingView.setFilters(new InputFilter[] {
new LengthFilter(BLUETOOTH_PIN_MAX_LENGTH) });
} else if (mType == BluetoothDevice.PAIRING_VARIANT_PASSKEY){
messageView.setText(getString(R.string.bluetooth_enter_passkey_msg, name));
// Maximum of 6 digits for passkey
mPairingView.setInputType(InputType.TYPE_CLASS_NUMBER |
InputType.TYPE_NUMBER_FLAG_SIGNED);
mPairingView.setFilters(new InputFilter[] {
new LengthFilter(BLUETOOTH_PASSKEY_MAX_LENGTH)});
} else if (mType == BluetoothDevice.PAIRING_VARIANT_PASSKEY_CONFIRMATION) {
mPairingView.setVisibility(View.GONE);
messageView.setText(getString(R.string.bluetooth_confirm_passkey_msg, name,
mPasskey));
} else if (mType == BluetoothDevice.PAIRING_VARIANT_CONSENT) {
mPairingView.setVisibility(View.GONE);
messageView.setText(getString(R.string.bluetooth_incoming_pairing_msg, name));
} else if (mType == BluetoothDevice.PAIRING_VARIANT_DISPLAY_PASSKEY) {
mPairingView.setVisibility(View.GONE);
messageView.setText(getString(R.string.bluetooth_display_passkey_msg, name, mPasskey));
} else {
Log.e(TAG, "Incorrect pairing type received, not creating view");
}
return view;
}
private void createConfirmationDialog() {
final AlertController.AlertParams p = mAlertParams;
p.mIconId = android.R.drawable.ic_dialog_info;
p.mTitle = getString(R.string.bluetooth_pairing_request);
p.mView = createView();
p.mPositiveButtonText = getString(R.string.bluetooth_pairing_accept);
p.mPositiveButtonListener = this;
p.mNegativeButtonText = getString(R.string.bluetooth_pairing_decline);
p.mNegativeButtonListener = this;
setupAlert();
}
private void createConsentDialog() {
final AlertController.AlertParams p = mAlertParams;
p.mIconId = android.R.drawable.ic_dialog_info;
p.mTitle = getString(R.string.bluetooth_pairing_request);
p.mView = createView();
p.mPositiveButtonText = getString(R.string.bluetooth_pairing_accept);
p.mPositiveButtonListener = this;
p.mNegativeButtonText = getString(R.string.bluetooth_pairing_decline);
p.mNegativeButtonListener = this;
setupAlert();
}
private void createDisplayPasskeyDialog() {
final AlertController.AlertParams p = mAlertParams;
p.mIconId = android.R.drawable.ic_dialog_info;
p.mTitle = getString(R.string.bluetooth_pairing_request);
p.mView = createView();
p.mPositiveButtonText = getString(android.R.string.ok);
p.mPositiveButtonListener = this;
setupAlert();
// Since its only a notification, send an OK to the framework,
// indicating that the dialog has been displayed.
mDevice.setPairingConfirmation(true);
}
@Override
protected void onDestroy() {
super.onDestroy();
unregisterReceiver(mReceiver);
}
public void afterTextChanged(Editable s) {
if (s.length() > 0) {
mOkButton.setEnabled(true);
}
}
private void dismissDialog() {
this.dismiss();
}
private void onPair(String value) {
if (mType == BluetoothDevice.PAIRING_VARIANT_PIN) {
byte[] pinBytes = BluetoothDevice.convertPinToBytes(value);
if (pinBytes == null) {
return;
}
mDevice.setPin(pinBytes);
} else if (mType == BluetoothDevice.PAIRING_VARIANT_PASSKEY) {
int passkey = Integer.parseInt(value);
mDevice.setPasskey(passkey);
} else if (mType == BluetoothDevice.PAIRING_VARIANT_PASSKEY_CONFIRMATION) {
mDevice.setPairingConfirmation(true);
} else if (mType == BluetoothDevice.PAIRING_VARIANT_CONSENT) {
mDevice.setPairingConfirmation(true);
} else if (mType == BluetoothDevice.PAIRING_VARIANT_DISPLAY_PASSKEY) {
// Do Nothing.
} else {
Log.e(TAG, "Incorrect pairing type received");
}
}
private void onCancel() {
mDevice.cancelPairingUserInput();
}
public void onClick(DialogInterface dialog, int which) {
switch (which) {
case DialogInterface.BUTTON_POSITIVE:
onPair(mPairingView.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) {
}
}