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/*
* Copyright (C) 2010 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;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import com.android.internal.widget.LockPatternUtils;
import com.android.settings.ChooseLockPattern.LeftButtonMode;
import com.android.settings.ChooseLockPattern.RightButtonMode;
import com.android.settings.ChooseLockPattern.Stage;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.os.Handler;
import android.text.Editable;
import android.text.TextUtils;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
public class ChooseLockPassword extends Activity implements OnClickListener {
private final int digitIds[] = new int[] { R.id.zero, R.id.one, R.id.two, R.id.three,
R.id.four, R.id.five, R.id.six, R.id.seven, R.id.eight, R.id.nine };
private TextView mPasswordTextView;
private int mPasswordMinLength = 4;
private int mPasswordMaxLength = 8;
private LockPatternUtils mLockPatternUtils;
private int mRequestedMode = LockPatternUtils.MODE_PIN;
private ChooseLockSettingsHelper mChooseLockSettingsHelper;
private com.android.settings.ChooseLockPassword.Stage mUiStage = Stage.Introduction;
private TextView mHeaderText;
private String mFirstPin;
public static final String PASSWORD_MIN_KEY = "lockscreen.password_min";
public static final String PASSWORD_MAX_KEY = "lockscreen.password_max";
private static Handler mHandler = new Handler();
private static final int CONFIRM_EXISTING_REQUEST = 58;
static final int RESULT_FINISHED = RESULT_FIRST_USER;
private static final long ERROR_MESSAGE_TIMEOUT = 3000;
/**
* Keep track internally of where the user is in choosing a pattern.
*/
protected enum Stage {
Introduction(R.string.lockpassword_choose_your_password_header),
NeedToConfirm(R.string.lockpassword_confirm_your_password_header),
ConfirmWrong(R.string.lockpassword_confirm_passwords_dont_match),
ChoiceConfirmed(R.string.lockpassword_password_confirmed_header);
/**
* @param headerMessage The message displayed at the top.
*/
Stage(int headerMessage) {
this.headerMessage = headerMessage;
}
final int headerMessage;
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mLockPatternUtils = new LockPatternUtils(this);
if (mLockPatternUtils.isDevicePolicyActive()) {
mRequestedMode = mLockPatternUtils.getRequestedPasswordMode();
mPasswordMinLength = mLockPatternUtils.getRequestedMinimumPasswordLength();
} else {
mRequestedMode = getIntent().getIntExtra(LockPatternUtils.PASSWORD_TYPE_KEY,
mRequestedMode);
mPasswordMinLength = getIntent().getIntExtra(PASSWORD_MIN_KEY, mPasswordMinLength);
}
mPasswordMaxLength = getIntent().getIntExtra(PASSWORD_MAX_KEY, mPasswordMaxLength);
initViews();
mChooseLockSettingsHelper = new ChooseLockSettingsHelper(this);
if (savedInstanceState == null) {
updateStage(Stage.Introduction);
mChooseLockSettingsHelper.launchConfirmationActivity(CONFIRM_EXISTING_REQUEST);
}
}
private void initViews() {
switch(mRequestedMode) {
case LockPatternUtils.MODE_PIN:
case LockPatternUtils.MODE_PASSWORD:
case LockPatternUtils.MODE_PATTERN:
setContentView(R.layout.choose_lock_pin);
// TODO: alphanumeric layout
// setContentView(R.layout.choose_lock_password);
for (int i = 0; i < digitIds.length; i++) {
Button button = (Button) findViewById(digitIds[i]);
button.setOnClickListener(this);
button.setText(Integer.toString(i));
}
break;
}
findViewById(R.id.ok).setOnClickListener(this);
findViewById(R.id.cancel).setOnClickListener(this);
findViewById(R.id.backspace).setOnClickListener(this);
mPasswordTextView = (TextView) findViewById(R.id.pinDisplay);
mHeaderText = (TextView) findViewById(R.id.headerText);
}
@Override
protected void onActivityResult(int requestCode, int resultCode,
Intent data) {
super.onActivityResult(requestCode, resultCode, data);
switch (requestCode) {
case CONFIRM_EXISTING_REQUEST:
if (resultCode != Activity.RESULT_OK) {
setResult(RESULT_FINISHED);
finish();
}
break;
}
}
protected void updateStage(Stage stage) {
mHeaderText.setText(stage.headerMessage);
mPasswordTextView.setText("");
mUiStage = stage;
}
/**
* Validates PIN and returns a message to display if PIN fails test.
* @param pin
* @return message id to display to user
*/
private String validatePassword(String pin) {
if (pin.length() < mPasswordMinLength) {
return getString(R.string.pin_password_too_short, mPasswordMinLength);
}
if (pin.length() > mPasswordMaxLength) {
return getString(R.string.pin_password_too_long, mPasswordMaxLength);
}
if (LockPatternUtils.MODE_PIN == mRequestedMode) {
Pattern p = Pattern.compile("[0-9]+");
Matcher m = p.matcher(pin);
if (!m.find()) {
return getString(R.string.pin_password_contains_non_digits);
}
} else if (LockPatternUtils.MODE_PASSWORD == mRequestedMode) {
// allow Latin-1 characters only
for (int i = 0; i < pin.length(); i++) {
char c = pin.charAt(i);
if (c <= 32 || c > 127) {
return getString(R.string.pin_password_illegal_character);
}
}
}
return null;
}
public void onClick(View v) {
switch (v.getId()) {
case R.id.ok:
{
final String pin = mPasswordTextView.getText().toString();
if (TextUtils.isEmpty(pin)) {
break;
}
String errorMsg = null;
if (mUiStage == Stage.Introduction) {
errorMsg = validatePassword(pin);
if (errorMsg == null) {
mFirstPin = pin;
updateStage(Stage.NeedToConfirm);
}
} else if (mUiStage == Stage.NeedToConfirm) {
if (mFirstPin.equals(pin)) {
// TODO: move these to LockPatternUtils
mLockPatternUtils.setLockPatternEnabled(false);
mLockPatternUtils.saveLockPattern(null);
mLockPatternUtils.saveLockPassword(pin);
finish();
} else {
int msg = R.string.lockpassword_confirm_passwords_dont_match;
errorMsg = getString(msg);
}
}
if (errorMsg != null) {
showError(errorMsg, Stage.Introduction);
}
}
break;
case R.id.backspace:
{
final Editable digits = mPasswordTextView.getEditableText();
final int len = digits.length();
if (len > 0) {
digits.delete(len-1, len);
}
}
break;
case R.id.cancel:
finish();
break;
default:
// Digits
for (int i = 0; i < digitIds.length; i++) {
if (v.getId() == digitIds[i]) {
mPasswordTextView.append(Integer.toString(i));
return;
}
}
break;
}
}
private void showError(String msg, final Stage next) {
mHeaderText.setText(msg);
mPasswordTextView.setText("");
mHandler.postDelayed(new Runnable() {
public void run() {
updateStage(next);
}
}, ERROR_MESSAGE_TIMEOUT);
}
}
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