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(PinCodeActivity.class);
  21         // other activities may be exempted, if needed
  22     }
  23
  24     private static int PASS_CODE_TIMEOUT = 1000;
  25         // keeping a "low" value (not 0) is the easiest way to avoid prevent the pass code is requested on rotations
  26
  27     public static PassCodeManager mPassCodeManagerInstance = null;
  28
  29     public static PassCodeManager getPassCodeManager() {
  30         if (mPassCodeManagerInstance == null) {
  31             mPassCodeManagerInstance = new PassCodeManager();
  32         }
  33         return mPassCodeManagerInstance;
  34     }
  35
  36     private Long mTimestamp = 0l;
  37     private int mVisibleActivitiesCounter = 0;
  38
  39     protected PassCodeManager() {};
  40
  41     public void onActivityStarted(Activity activity) {
  42         if (!sExemptOfPasscodeActivites.contains(activity.getClass()) &&
  43                 passCodeShouldBeRequested()
  44                 ){
  45
  46             Intent i = new Intent(MainApp.getAppContext(), PinCodeActivity.class);
  47             i.setAction(PinCodeActivity.ACTION_REQUEST);
  48             i.setFlags(Intent.FLAG_ACTIVITY_REORDER_TO_FRONT);
  49             activity.startActivity(i);
  50         }
  51
  52         mVisibleActivitiesCounter++;    // AFTER passCodeShouldBeRequested was checked
  53     }
  54
  55     public void onActivityStopped(Activity activity) {
  56         if (mVisibleActivitiesCounter > 0) {
  57             mVisibleActivitiesCounter--;
  58         }
  59         setUnlockTimestamp();
  60     }
  61
  62     private boolean passCodeShouldBeRequested(){
  63         if ((System.currentTimeMillis() - mTimestamp) > PASS_CODE_TIMEOUT &&
  64                 mVisibleActivitiesCounter <= 0
  65                 ){
  66             SharedPreferences appPrefs = PreferenceManager.getDefaultSharedPreferences(MainApp.getAppContext());
  67             if (appPrefs.getBoolean("set_pincode", false)) {
  68                 return true;
  69             }
  70         }
  71         return false;
  72     }
  73
  74     private void setUnlockTimestamp() {
  75         mTimestamp = System.currentTimeMillis();
  76     }
  77
  78 }