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      1 /*
      2  * Copyright (C) 2010 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.settings;
     18 
     19 import android.app.Activity;
     20 import android.app.admin.DevicePolicyManager;
     21 import android.content.Intent;
     22 
     23 import com.android.internal.widget.LockPatternUtils;
     24 
     25 public class ChooseLockSettingsHelper {
     26     private LockPatternUtils mLockPatternUtils;
     27     private Activity mActivity;
     28 
     29     public ChooseLockSettingsHelper(Activity activity) {
     30         mActivity = activity;
     31         mLockPatternUtils = new LockPatternUtils(activity);
     32     }
     33 
     34     public LockPatternUtils utils() {
     35         return mLockPatternUtils;
     36     }
     37 
     38     /**
     39      * If a pattern, password or PIN exists, prompt the user before allowing them to change it.
     40      * @param message optional message to display about the action about to be done
     41      * @param details optional detail message to display
     42      * @return true if one exists and we launched an activity to confirm it
     43      * @see #onActivityResult(int, int, android.content.Intent)
     44      */
     45     protected boolean launchConfirmationActivity(int request,
     46             CharSequence message, CharSequence details) {
     47         boolean launched = false;
     48         switch (mLockPatternUtils.getKeyguardStoredPasswordQuality()) {
     49             case DevicePolicyManager.PASSWORD_QUALITY_SOMETHING:
     50                 launched = confirmPattern(request, message, details);
     51                 break;
     52             case DevicePolicyManager.PASSWORD_QUALITY_NUMERIC:
     53             case DevicePolicyManager.PASSWORD_QUALITY_ALPHABETIC:
     54             case DevicePolicyManager.PASSWORD_QUALITY_ALPHANUMERIC:
     55                 // TODO: update UI layout for ConfirmPassword to show message and details
     56                 launched = confirmPassword(request);
     57                 break;
     58         }
     59         return launched;
     60     }
     61 
     62     /**
     63      * Launch screen to confirm the existing lock pattern.
     64      * @param message shown in header of ConfirmLockPattern if not null
     65      * @param details shown in footer of ConfirmLockPattern if not null
     66      * @see #onActivityResult(int, int, android.content.Intent)
     67      * @return true if we launched an activity to confirm pattern
     68      */
     69     private boolean confirmPattern(int request, CharSequence message, CharSequence details) {
     70         if (!mLockPatternUtils.isLockPatternEnabled() || !mLockPatternUtils.savedPatternExists()) {
     71             return false;
     72         }
     73         final Intent intent = new Intent();
     74         // supply header and footer text in the intent
     75         intent.putExtra(ConfirmLockPattern.HEADER_TEXT, message);
     76         intent.putExtra(ConfirmLockPattern.FOOTER_TEXT, details);
     77         intent.setClassName("com.android.settings", "com.android.settings.ConfirmLockPattern");
     78         mActivity.startActivityForResult(intent, request);
     79         return true;
     80     }
     81 
     82     /**
     83      * Launch screen to confirm the existing lock password.
     84      * @see #onActivityResult(int, int, android.content.Intent)
     85      * @return true if we launched an activity to confirm password
     86      */
     87     private boolean confirmPassword(int request) {
     88         if (!mLockPatternUtils.isLockPasswordEnabled()) return false;
     89         final Intent intent = new Intent();
     90         intent.setClassName("com.android.settings", "com.android.settings.ConfirmLockPassword");
     91         mActivity.startActivityForResult(intent, request);
     92         return true;
     93     }
     94 
     95 
     96 }
     97