src/com/owncloud/android/authentication/PasscodeManager.java

   1 package com.owncloud.android.authentication;
   2
   3 import android.app.Activity;
   4 import android.content.Intent;
   5 import android.content.SharedPreferences;
   6 import android.preference.PreferenceManager;
   7
   8 import com.owncloud.android.MainApp;
   9 import com.owncloud.android.ui.activity.PinCodeActivity;
  10
  11 import java.util.HashSet;
  12 import java.util.Set;
  13
  14 public class PassCodeManager {
  15
  16     private static final Set<Class> sExemptOfPasscodeActivites;
  17
  18     static {
  19         sExemptOfPasscodeActivites = new HashSet<Class>();
  20         sExemptOfPasscodeActivites.add(AuthenticatorActivity.class);    // maybe not so good idea
  21         sExemptOfPasscodeActivites.add(PinCodeActivity.class);
  22     }
  23
  24     private static int PASS_CODE_TIMEOUT = 1000;
  25
  26     public static PassCodeManager mPassCodeManagerInstance = null;
  27
  28     public static PassCodeManager getPassCodeManager() {
  29         if (mPassCodeManagerInstance == null) {
  30             mPassCodeManagerInstance = new PassCodeManager();
  31         }
  32         return mPassCodeManagerInstance;
  33     }
  34
  35     private Long mTimestamp = 0l;
  36     private int mVisibleActivitiesCounter = 0;
  37
  38     protected PassCodeManager() {};
  39
  40     public void onActivityStarted(Activity activity) {
  41         if (!sExemptOfPasscodeActivites.contains(activity.getClass()) &&
  42                 passCodeShouldBeRequested()
  43                 ){
  44
  45             Intent i = new Intent(MainApp.getAppContext(), PinCodeActivity.class);
  46             i.setAction(PinCodeActivity.ACTION_REQUEST);
  47             activity.startActivity(i);
  48         }
  49
  50         mVisibleActivitiesCounter++;    // AFTER passCodeShouldBeRequested was checked
  51     }
  52
  53     public void onActivityStopped(Activity activity) {
  54         if (mVisibleActivitiesCounter > 0) {
  55             mVisibleActivitiesCounter--;
  56         }
  57         setUnlockTimestamp();
  58     }
  59
  60     private boolean passCodeShouldBeRequested(){
  61         if ((System.currentTimeMillis() - mTimestamp) > PASS_CODE_TIMEOUT &&
  62                 mVisibleActivitiesCounter <= 0
  63                 ){
  64             SharedPreferences appPrefs = PreferenceManager.getDefaultSharedPreferences(MainApp.getAppContext());
  65             if (appPrefs.getBoolean("set_pincode", false)) {
  66                 return true;
  67             }
  68         }
  69         return false;
  70     }
  71
  72     private void setUnlockTimestamp() {
  73         mTimestamp = System.currentTimeMillis();
  74     }
  75
  76 }