| /* |
| * 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 com.android.internal.widget.LockPatternUtils; |
| import com.android.internal.widget.PasswordEntryKeyboardHelper; |
| import com.android.internal.widget.PasswordEntryKeyboardView; |
| |
| import android.app.Activity; |
| import android.app.admin.DevicePolicyManager; |
| import android.content.Intent; |
| import android.inputmethodservice.KeyboardView; |
| import android.os.Bundle; |
| import android.os.Handler; |
| import android.text.Editable; |
| import android.text.Selection; |
| import android.text.Spannable; |
| import android.text.TextUtils; |
| import android.text.TextWatcher; |
| import android.view.KeyEvent; |
| import android.view.View; |
| import android.view.WindowManager; |
| import android.view.View.OnClickListener; |
| import android.view.inputmethod.EditorInfo; |
| import android.widget.Button; |
| import android.widget.TextView; |
| import android.widget.TextView.OnEditorActionListener; |
| |
| |
| public class ChooseLockPassword extends Activity implements OnClickListener, OnEditorActionListener, |
| TextWatcher { |
| private static final String KEY_FIRST_PIN = "first_pin"; |
| private static final String KEY_UI_STAGE = "ui_stage"; |
| private TextView mPasswordEntry; |
| private int mPasswordMinLength = 4; |
| private int mPasswordMaxLength = 16; |
| private LockPatternUtils mLockPatternUtils; |
| private int mRequestedQuality = DevicePolicyManager.PASSWORD_QUALITY_NUMERIC; |
| private ChooseLockSettingsHelper mChooseLockSettingsHelper; |
| private com.android.settings.ChooseLockPassword.Stage mUiStage = Stage.Introduction; |
| private TextView mHeaderText; |
| private String mFirstPin; |
| private KeyboardView mKeyboardView; |
| private PasswordEntryKeyboardHelper mKeyboardHelper; |
| private boolean mIsAlphaMode; |
| private Button mCancelButton; |
| private Button mNextButton; |
| 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, |
| R.string.lockpassword_choose_your_pin_header, |
| R.string.lockpassword_continue_label), |
| |
| NeedToConfirm(R.string.lockpassword_confirm_your_password_header, |
| R.string.lockpassword_confirm_your_pin_header, |
| R.string.lockpassword_ok_label), |
| |
| ConfirmWrong(R.string.lockpassword_confirm_passwords_dont_match, |
| R.string.lockpassword_confirm_pins_dont_match, |
| R.string.lockpassword_continue_label); |
| |
| /** |
| * @param headerMessage The message displayed at the top. |
| */ |
| Stage(int hintInAlpha, int hintInNumeric, int nextButtonText) { |
| this.alphaHint = hintInAlpha; |
| this.numericHint = hintInNumeric; |
| this.buttonText = nextButtonText; |
| } |
| |
| public final int alphaHint; |
| public final int numericHint; |
| public final int buttonText; |
| } |
| |
| @Override |
| protected void onCreate(Bundle savedInstanceState) { |
| super.onCreate(savedInstanceState); |
| mLockPatternUtils = new LockPatternUtils(this); |
| mRequestedQuality = getIntent().getIntExtra(LockPatternUtils.PASSWORD_TYPE_KEY, mRequestedQuality); |
| mPasswordMinLength = getIntent().getIntExtra(PASSWORD_MIN_KEY, mPasswordMinLength); |
| mPasswordMaxLength = getIntent().getIntExtra(PASSWORD_MAX_KEY, mPasswordMaxLength); |
| |
| final boolean confirmCredentials = getIntent().getBooleanExtra("confirm_credentials", true); |
| int minMode = mLockPatternUtils.getRequestedPasswordQuality(); |
| if (mRequestedQuality < minMode) { |
| mRequestedQuality = minMode; |
| } |
| int minLength = mLockPatternUtils.getRequestedMinimumPasswordLength(); |
| if (mPasswordMinLength < minLength) { |
| mPasswordMinLength = minLength; |
| } |
| initViews(); |
| mChooseLockSettingsHelper = new ChooseLockSettingsHelper(this); |
| if (savedInstanceState == null) { |
| updateStage(Stage.Introduction); |
| if (confirmCredentials) { |
| mChooseLockSettingsHelper.launchConfirmationActivity(CONFIRM_EXISTING_REQUEST, |
| null, null); |
| } |
| } |
| } |
| |
| private void initViews() { |
| setContentView(R.layout.choose_lock_password); |
| // Disable IME on our window since we provide our own keyboard |
| getWindow().setFlags(WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM, |
| WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM); |
| |
| mCancelButton = (Button) findViewById(R.id.cancel_button); |
| mCancelButton.setOnClickListener(this); |
| mNextButton = (Button) findViewById(R.id.next_button); |
| mNextButton.setOnClickListener(this); |
| |
| mKeyboardView = (PasswordEntryKeyboardView) findViewById(R.id.keyboard); |
| mPasswordEntry = (TextView) findViewById(R.id.password_entry); |
| mPasswordEntry.setOnEditorActionListener(this); |
| mPasswordEntry.addTextChangedListener(this); |
| |
| mIsAlphaMode = DevicePolicyManager.PASSWORD_QUALITY_ALPHABETIC == mRequestedQuality |
| || DevicePolicyManager.PASSWORD_QUALITY_ALPHANUMERIC == mRequestedQuality; |
| mKeyboardHelper = new PasswordEntryKeyboardHelper(this, mKeyboardView, mPasswordEntry); |
| mKeyboardHelper.setKeyboardMode(mIsAlphaMode ? |
| PasswordEntryKeyboardHelper.KEYBOARD_MODE_ALPHA |
| : PasswordEntryKeyboardHelper.KEYBOARD_MODE_NUMERIC); |
| |
| mHeaderText = (TextView) findViewById(R.id.headerText); |
| mKeyboardView.requestFocus(); |
| } |
| |
| @Override |
| protected void onResume() { |
| super.onResume(); |
| updateStage(mUiStage); |
| mKeyboardView.requestFocus(); |
| } |
| |
| @Override |
| protected void onSaveInstanceState(Bundle outState) { |
| super.onSaveInstanceState(outState); |
| outState.putString(KEY_UI_STAGE, mUiStage.name()); |
| outState.putString(KEY_FIRST_PIN, mFirstPin); |
| } |
| |
| @Override |
| protected void onRestoreInstanceState(Bundle savedInstanceState) { |
| super.onRestoreInstanceState(savedInstanceState); |
| String state = savedInstanceState.getString(KEY_UI_STAGE); |
| mFirstPin = savedInstanceState.getString(KEY_FIRST_PIN); |
| if (state != null) { |
| mUiStage = Stage.valueOf(state); |
| updateStage(mUiStage); |
| } |
| } |
| |
| @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) { |
| mUiStage = stage; |
| updateUi(); |
| } |
| |
| /** |
| * Validates PIN and returns a message to display if PIN fails test. |
| * @param password the raw password the user typed in |
| * @return error message to show to user or null if password is OK |
| */ |
| private String validatePassword(String password) { |
| if (password.length() < mPasswordMinLength) { |
| return getString(mIsAlphaMode ? |
| R.string.lockpassword_password_too_short |
| : R.string.lockpassword_pin_too_short, mPasswordMinLength); |
| } |
| if (password.length() > mPasswordMaxLength) { |
| return getString(mIsAlphaMode ? |
| R.string.lockpassword_password_too_long |
| : R.string.lockpassword_pin_too_long, mPasswordMaxLength); |
| } |
| boolean hasAlpha = false; |
| boolean hasDigit = false; |
| boolean hasSymbol = false; |
| for (int i = 0; i < password.length(); i++) { |
| char c = password.charAt(i); |
| // allow non white space Latin-1 characters only |
| if (c <= 32 || c > 127) { |
| return getString(R.string.lockpassword_illegal_character); |
| } |
| if (c >= '0' && c <= '9') { |
| hasDigit = true; |
| } else if ((c >= 'A' && c <= 'Z') || (c >= 'a' && c <= 'z')) { |
| hasAlpha = true; |
| } else { |
| hasSymbol = true; |
| } |
| } |
| if (DevicePolicyManager.PASSWORD_QUALITY_NUMERIC == mRequestedQuality |
| && (hasAlpha | hasSymbol)) { |
| // This shouldn't be possible unless user finds some way to bring up soft keyboard |
| return getString(R.string.lockpassword_pin_contains_non_digits); |
| } else { |
| final boolean alphabetic = DevicePolicyManager.PASSWORD_QUALITY_ALPHABETIC |
| == mRequestedQuality; |
| final boolean alphanumeric = DevicePolicyManager.PASSWORD_QUALITY_ALPHANUMERIC |
| == mRequestedQuality; |
| final boolean symbolic = false; // not yet |
| if ((alphabetic || alphanumeric) && !hasAlpha) { |
| return getString(R.string.lockpassword_password_requires_alpha); |
| } |
| if (alphanumeric && !hasDigit) { |
| return getString(R.string.lockpassword_password_requires_digit); |
| } |
| if (symbolic && !hasSymbol) { |
| return getString(R.string.lockpassword_password_requires_symbol); |
| } |
| } |
| return null; |
| } |
| |
| private void handleNext() { |
| final String pin = mPasswordEntry.getText().toString(); |
| if (TextUtils.isEmpty(pin)) { |
| return; |
| } |
| String errorMsg = null; |
| if (mUiStage == Stage.Introduction) { |
| errorMsg = validatePassword(pin); |
| if (errorMsg == null) { |
| mFirstPin = pin; |
| updateStage(Stage.NeedToConfirm); |
| mPasswordEntry.setText(""); |
| } |
| } else if (mUiStage == Stage.NeedToConfirm) { |
| if (mFirstPin.equals(pin)) { |
| mLockPatternUtils.clearLock(); |
| mLockPatternUtils.saveLockPassword(pin, mRequestedQuality); |
| finish(); |
| } else { |
| updateStage(Stage.ConfirmWrong); |
| CharSequence tmp = mPasswordEntry.getText(); |
| if (tmp != null) { |
| Selection.setSelection((Spannable) tmp, 0, tmp.length()); |
| } |
| } |
| } |
| if (errorMsg != null) { |
| showError(errorMsg, mUiStage); |
| } |
| } |
| |
| public void onClick(View v) { |
| switch (v.getId()) { |
| case R.id.next_button: |
| handleNext(); |
| break; |
| |
| case R.id.cancel_button: |
| finish(); |
| break; |
| } |
| } |
| |
| private void showError(String msg, final Stage next) { |
| mHeaderText.setText(msg); |
| mHandler.postDelayed(new Runnable() { |
| public void run() { |
| updateStage(next); |
| } |
| }, ERROR_MESSAGE_TIMEOUT); |
| } |
| |
| public boolean onEditorAction(TextView v, int actionId, KeyEvent event) { |
| // Check if this was the result of hitting the enter key |
| if (actionId == EditorInfo.IME_NULL) { |
| handleNext(); |
| return true; |
| } |
| return false; |
| } |
| |
| /** |
| * Update the hint based on current Stage and length of password entry |
| */ |
| private void updateUi() { |
| String password = mPasswordEntry.getText().toString(); |
| final int length = password.length(); |
| if (mUiStage == Stage.Introduction && length > 0) { |
| if (length < mPasswordMinLength) { |
| String msg = getString(mIsAlphaMode ? R.string.lockpassword_password_too_short |
| : R.string.lockpassword_pin_too_short, mPasswordMinLength); |
| mHeaderText.setText(msg); |
| mNextButton.setEnabled(false); |
| } else { |
| String error = validatePassword(password); |
| if (error != null) { |
| mHeaderText.setText(error); |
| mNextButton.setEnabled(false); |
| } else { |
| mHeaderText.setText(R.string.lockpassword_press_continue); |
| mNextButton.setEnabled(true); |
| } |
| } |
| } else { |
| mHeaderText.setText(mIsAlphaMode ? mUiStage.alphaHint : mUiStage.numericHint); |
| mNextButton.setEnabled(length > 0); |
| } |
| mNextButton.setText(mUiStage.buttonText); |
| } |
| |
| public void afterTextChanged(Editable s) { |
| // Changing the text while error displayed resets to NeedToConfirm state |
| if (mUiStage == Stage.ConfirmWrong) { |
| mUiStage = Stage.NeedToConfirm; |
| } |
| updateUi(); |
| } |
| |
| public void beforeTextChanged(CharSequence s, int start, int count, int after) { |
| |
| } |
| |
| public void onTextChanged(CharSequence s, int start, int before, int count) { |
| |
| } |
| } |
