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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.Dialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.res.Configuration;
import android.os.Bundle;
import android.text.Editable;
import android.text.InputFilter;
import android.text.TextUtils;
import android.text.TextWatcher;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.View;
import android.view.inputmethod.EditorInfo;
import android.view.inputmethod.InputMethodManager;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import androidx.annotation.VisibleForTesting;
import androidx.appcompat.app.AlertDialog;
import com.android.settings.R;
import com.android.settings.core.instrumentation.InstrumentedDialogFragment;
/**
* Dialog fragment for renaming a Bluetooth device.
*/
abstract class BluetoothNameDialogFragment extends InstrumentedDialogFragment
implements TextWatcher, TextView.OnEditorActionListener {
// Key to save the edited name and edit status for restoring after rotation
private static final String KEY_NAME = "device_name";
private static final String KEY_NAME_EDITED = "device_name_edited";
@VisibleForTesting
AlertDialog mAlertDialog;
private Button mOkButton;
EditText mDeviceNameView;
// This flag is set when the name is updated by code, to distinguish from user changes
private boolean mDeviceNameUpdated;
// This flag is set when the user edits the name (preserved on rotation)
private boolean mDeviceNameEdited;
/**
* @return the title to use for the dialog.
*/
abstract protected int getDialogTitle();
/**
* @return the current name used for this device.
*/
abstract protected String getDeviceName();
/**
* Set the device to the given name.
* @param deviceName the name to use
*/
abstract protected void setDeviceName(String deviceName);
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
String deviceName = getDeviceName();
if (savedInstanceState != null) {
deviceName = savedInstanceState.getString(KEY_NAME, deviceName);
mDeviceNameEdited = savedInstanceState.getBoolean(KEY_NAME_EDITED, false);
}
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity())
.setTitle(getDialogTitle())
.setView(createDialogView(deviceName))
.setPositiveButton(R.string.bluetooth_rename_button, (dialog, which) -> {
setDeviceName(mDeviceNameView.getText().toString().trim());
})
.setNegativeButton(android.R.string.cancel, null);
mAlertDialog = builder.create();
mAlertDialog.setOnShowListener(d -> {
if (mDeviceNameView != null && mDeviceNameView.requestFocus()) {
InputMethodManager imm = (InputMethodManager) getContext().getSystemService(
Context.INPUT_METHOD_SERVICE);
if (imm != null) {
imm.showSoftInput(mDeviceNameView, InputMethodManager.SHOW_IMPLICIT);
}
}
});
return mAlertDialog;
}
@Override
public void onSaveInstanceState(Bundle outState) {
outState.putString(KEY_NAME, mDeviceNameView.getText().toString());
outState.putBoolean(KEY_NAME_EDITED, mDeviceNameEdited);
}
private View createDialogView(String deviceName) {
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 BluetoothLengthDeviceNameFilter()
});
mDeviceNameView.setText(deviceName); // set initial value before adding listener
if (!TextUtils.isEmpty(deviceName)) {
mDeviceNameView.setSelection(deviceName.length());
}
mDeviceNameView.addTextChangedListener(this);
com.android.settings.Utils.setEditTextCursorPosition(mDeviceNameView);
mDeviceNameView.setOnEditorActionListener(this);
return view;
}
@Override
public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
if (actionId == EditorInfo.IME_ACTION_DONE) {
// Rejecting Empty String
if (v.length() != 0 && !(v.getText().toString().trim().isEmpty()))
{
setDeviceName(v.getText().toString());
}
if (mAlertDialog != null && mAlertDialog.isShowing()) {
mAlertDialog.dismiss();
}
return true; // action handled
} else {
return false; // not handled
}
}
@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(mDeviceNameEdited); // Ok button enabled after user edits
}
}
void updateDeviceName() {
String name = getDeviceName();
if (name != null) {
mDeviceNameUpdated = true;
mDeviceNameEdited = false;
mDeviceNameView.setText(name);
}
}
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 {
mDeviceNameEdited = true;
if (mOkButton != null) {
mOkButton.setEnabled(s.toString().trim().length() != 0);
}
}
}
public void onConfigurationChanged(Configuration newConfig, CharSequence s) {
super.onConfigurationChanged(newConfig);
if (mOkButton != null) {
mOkButton.setEnabled(s.length() != 0 && !(s.toString().trim().isEmpty()));
}
}
/* 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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