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/*
* Copyright (C) 2011 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.app.DialogFragment;
import android.bluetooth.BluetoothAdapter;
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.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import com.android.settings.R;
/**
* Dialog fragment for renaming the local Bluetooth device.
*/
final class BluetoothNameDialogFragment extends DialogFragment implements TextWatcher {
private static final int BLUETOOTH_NAME_MAX_LENGTH_BYTES = 248;
private AlertDialog mAlertDialog;
private Button mOkButton;
// accessed from inner class (not private to avoid thunks)
static final String TAG = "BluetoothNameDialogFragment";
final LocalBluetoothAdapter mLocalAdapter;
EditText mDeviceNameView;
// This flag is set when the name is updated by code, to distinguish from user changes
private boolean mDeviceNameUpdated;
private final BroadcastReceiver mReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if (action.equals(BluetoothAdapter.ACTION_LOCAL_NAME_CHANGED)) {
updateDeviceName();
} else if (action.equals(BluetoothAdapter.ACTION_STATE_CHANGED) &&
(intent.getIntExtra(BluetoothAdapter.EXTRA_STATE, BluetoothAdapter.ERROR) ==
BluetoothAdapter.STATE_ON)) {
updateDeviceName();
}
}
};
public BluetoothNameDialogFragment(LocalBluetoothAdapter adapter) {
mLocalAdapter = adapter;
}
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
mAlertDialog = new AlertDialog.Builder(getActivity())
.setIcon(android.R.drawable.ic_dialog_info)
.setTitle(R.string.bluetooth_rename_device)
.setView(createDialogView())
.setPositiveButton(R.string.bluetooth_rename_button,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
if (mLocalAdapter != null) {
String deviceName = mDeviceNameView.getText().toString();
Log.d(TAG, "Setting device name to " + deviceName);
mLocalAdapter.setName(deviceName);
}
}
})
.setNegativeButton(android.R.string.cancel, null)
.create();
return mAlertDialog;
}
private View createDialogView() {
final LayoutInflater layoutInflater = (LayoutInflater)getActivity()
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View view = layoutInflater.inflate(R.layout.dialog_edittext, null);
mDeviceNameView = (EditText) view.findViewById(R.id.edittext);
mDeviceNameView.setFilters(new InputFilter[] {
new Utf8ByteLengthFilter(BLUETOOTH_NAME_MAX_LENGTH_BYTES)
});
mDeviceNameView.addTextChangedListener(this);
return view;
}
@Override
public void onDestroy() {
super.onDestroy();
mAlertDialog = null;
mDeviceNameView = null;
mOkButton = null;
}
@Override
public void onResume() {
super.onResume();
if (mOkButton == null) {
mOkButton = mAlertDialog.getButton(DialogInterface.BUTTON_POSITIVE);
mOkButton.setEnabled(false); // Ok button is enabled when the user edits the name
}
IntentFilter filter = new IntentFilter();
filter.addAction(BluetoothAdapter.ACTION_STATE_CHANGED);
filter.addAction(BluetoothAdapter.ACTION_LOCAL_NAME_CHANGED);
getActivity().registerReceiver(mReceiver, filter);
updateDeviceName();
}
@Override
public void onPause() {
super.onPause();
getActivity().unregisterReceiver(mReceiver);
}
void updateDeviceName() {
if (mLocalAdapter != null && mLocalAdapter.isEnabled()) {
mDeviceNameUpdated = true;
mDeviceNameView.setText(mLocalAdapter.getName());
}
}
public void afterTextChanged(Editable s) {
if (mDeviceNameUpdated) {
// Device name changed by code; disable Ok button until edited by user
mDeviceNameUpdated = false;
mOkButton.setEnabled(false);
} else {
mOkButton.setEnabled(s.length() != 0);
}
}
/* 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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