Improve auto lock and make it more customizable

app/build.gradle

@@ -115,6 +115,7 @@ dependencies {
  implementation 'androidx.cardview:cardview:1.0.0'
  implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
  implementation 'androidx.documentfile:documentfile:1.0.1'
+ implementation "androidx.lifecycle:lifecycle-process:2.2.0"
  implementation 'androidx.preference:preference:1.1.1'
  implementation 'androidx.recyclerview:recyclerview:1.1.0'
  implementation "androidx.viewpager2:viewpager2:1.0.0"

app/src/main/java/com/beemdevelopment/aegis/AegisApplication.java

@@ -12,7 +12,12 @@
 import android.graphics.drawable.Icon;
 import android.os.Build;
 
+import androidx.annotation.NonNull;
 import androidx.annotation.RequiresApi;
+import androidx.lifecycle.Lifecycle;
+import androidx.lifecycle.LifecycleEventObserver;
+import androidx.lifecycle.LifecycleOwner;
+import androidx.lifecycle.ProcessLifecycleOwner;
 
 import com.beemdevelopment.aegis.services.NotificationService;
 import com.beemdevelopment.aegis.ui.MainActivity;
@@ -53,6 +58,9 @@ public void onCreate() {
  intentFilter.addAction(CODE_LOCK_VAULT_ACTION);
  registerReceiver(receiver, intentFilter);
 
+ // lock the app if the user moves the application to the background
+ ProcessLifecycleOwner.get().getLifecycle().addObserver(new AppLifecycleObserver());
+
  if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.N_MR1) {
  initAppShortcuts();
  }
@@ -111,8 +119,8 @@ public Preferences getPreferences() {
  return _prefs;
  }
 
- public boolean isAutoLockEnabled() {
- return _prefs.isAutoLockEnabled() && !isVaultLocked() && _manager.isEncryptionEnabled() ;
+ public boolean isAutoLockEnabled(int autoLockType) {
+ return _prefs.isAutoLockTypeEnabled(autoLockType) && !isVaultLocked() && _manager.isEncryptionEnabled();
  }
 
  public void registerLockListener(LockListener listener) {
@@ -123,10 +131,14 @@ public void unregisterLockListener(LockListener listener) {
  _lockListeners.remove(listener);
  }
 
- public void lock() {
+ /**
+ * Locks the vault and the app.
+ * @param userInitiated whether or not the user initiated the lock in MainActivity.
+ */
+ public void lock(boolean userInitiated) {
  _manager = null;
  for (LockListener listener : _lockListeners) {
- listener.onLocked();
+ listener.onLocked(userInitiated);
  }
 
  stopService(new Intent(AegisApplication.this, NotificationService.class));
@@ -168,16 +180,29 @@ private void initNotificationChannels() {
  }
  }
 
- public class ScreenOffReceiver extends BroadcastReceiver {
+ private class AppLifecycleObserver implements LifecycleEventObserver {
+ @Override
+ public void onStateChanged(@NonNull LifecycleOwner source, @NonNull Lifecycle.Event event) {
+ if (event == Lifecycle.Event.ON_STOP && isAutoLockEnabled(Preferences.AUTO_LOCK_ON_MINIMIZE)) {
+ lock(false);
+ }
+ }
+ }
+
+ private class ScreenOffReceiver extends BroadcastReceiver {
  @Override
  public void onReceive(Context context, Intent intent) {
- if (isAutoLockEnabled()) {
- lock();
+ if (isAutoLockEnabled(Preferences.AUTO_LOCK_ON_DEVICE_LOCK)) {
+ lock(false);
  }
  }
  }
 
  public interface LockListener {
- void onLocked();
+ /**
+ * When called, the app/vault has been locked and the listener should perform its cleanup operations.
+ * @param userInitiated whether or not the user initiated the lock in MainActivity.
+ */
+ void onLocked(boolean userInitiated);
  }
 }

app/src/main/java/com/beemdevelopment/aegis/Preferences.java

@@ -12,6 +12,17 @@
 import java.util.concurrent.TimeUnit;
 
 public class Preferences {
+ public static final int AUTO_LOCK_OFF = 1 << 0;
+ public static final int AUTO_LOCK_ON_BACK_BUTTON = 1 << 1;
+ public static final int AUTO_LOCK_ON_MINIMIZE = 1 << 2;
+ public static final int AUTO_LOCK_ON_DEVICE_LOCK = 1 << 3;
+
+ public static final int[] AUTO_LOCK_SETTINGS = {
+ AUTO_LOCK_ON_BACK_BUTTON,
+ AUTO_LOCK_ON_MINIMIZE,
+ AUTO_LOCK_ON_DEVICE_LOCK
+ };
+
  private SharedPreferences _prefs;
 
  public Preferences(Context context) {
@@ -73,8 +84,25 @@ public boolean isIntroDone() {
  return _prefs.getBoolean("pref_intro", false);
  }
 
+ private int getAutoLockMask() {
+ final int def = AUTO_LOCK_ON_BACK_BUTTON | AUTO_LOCK_ON_DEVICE_LOCK;
+ if (!_prefs.contains("pref_auto_lock_mask")) {
+ return _prefs.getBoolean("pref_auto_lock", true) ? def : AUTO_LOCK_OFF;
+ }
+
+ return _prefs.getInt("pref_auto_lock_mask", def);
+ }
+
  public boolean isAutoLockEnabled() {
- return _prefs.getBoolean("pref_auto_lock", true);
+ return getAutoLockMask() != AUTO_LOCK_OFF;
+ }
+
+ public boolean isAutoLockTypeEnabled(int autoLockType) {
+ return (getAutoLockMask() & autoLockType) == autoLockType;
+ }
+
+ public void setAutoLockMask(int autoLock) {
+ _prefs.edit().putInt("pref_auto_lock_mask", autoLock).apply();
  }
 
  public void setIntroDone(boolean done) {

app/src/main/java/com/beemdevelopment/aegis/ui/AegisActivity.java

@@ -6,7 +6,6 @@
 import android.view.WindowManager;
 import android.widget.Toast;
 
-import androidx.annotation.CallSuper;
 import androidx.appcompat.app.AppCompatActivity;
 
 import com.beemdevelopment.aegis.AegisApplication;
@@ -20,9 +19,7 @@
 import java.util.Map;
 
 public abstract class AegisActivity extends AppCompatActivity implements AegisApplication.LockListener {
- private boolean _resumed;
  private AegisApplication _app;
- private Theme _configuredTheme;
 
  @Override
  protected void onCreate(Bundle savedInstanceState) {
@@ -39,6 +36,7 @@ protected void onCreate(Bundle savedInstanceState) {
  Intent intent = new Intent(this, MainActivity.class);
  intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK);
  startActivity(intent);
+ finish();
  return;
  }
 
@@ -58,24 +56,9 @@ protected void onDestroy() {
  }
 
  @Override
- protected void onResume() {
- super.onResume();
- _resumed = true;
- }
-
- @Override
- protected void onPause() {
- super.onPause();
- _resumed = false;
- }
-
- @CallSuper
- @Override
- public void onLocked() {
- if (isOrphan()) {
- setResult(RESULT_CANCELED, null);
- finish();
- }
+ public void onLocked(boolean userInitiated) {
+ setResult(RESULT_CANCELED, null);
+ finishAndRemoveTask();
  }
 
  protected AegisApplication getApp() {
@@ -139,13 +122,6 @@ protected boolean saveVault(boolean backup) {
  }
  }
 
- /**
- * Reports whether this Activity has been resumed. (i.e. onResume was called)
- */
- protected boolean isOpen() {
- return _resumed;
- }
-
  /**
  * Reports whether this Activity instance has become an orphan. This can happen if
  * the vault was locked by an external trigger while the Activity was still open.

app/src/main/java/com/beemdevelopment/aegis/ui/AuthActivity.java

@@ -23,7 +23,6 @@
 import androidx.biometric.BiometricPrompt;
 
 import com.beemdevelopment.aegis.AegisApplication;
-import com.beemdevelopment.aegis.CancelAction;
 import com.beemdevelopment.aegis.Preferences;
 import com.beemdevelopment.aegis.R;
 import com.beemdevelopment.aegis.ThemeMap;
@@ -52,17 +51,15 @@
 public class AuthActivity extends AegisActivity {
  private EditText _textPassword;
 
- private CancelAction _cancelAction;
  private SlotList _slots;
-
  private SecretKey _bioKey;
  private BiometricSlot _bioSlot;
  private BiometricPrompt _bioPrompt;
 
  private int _failedUnlockAttempts;
 
  // the first time this activity is resumed after creation, it's possible to inhibit showing the
- // biometric prompt by setting 'inhibitBioPrompt' to false through the intent
+ // biometric prompt by setting 'inhibitBioPrompt' to true through the intent
  private boolean _inhibitBioPrompt;
 
  private Preferences _prefs;
@@ -95,7 +92,6 @@ protected void onCreate(Bundle savedInstanceState) {
  } else {
  _inhibitBioPrompt = savedInstanceState.getBoolean("inhibitBioPrompt", false);
  }
- _cancelAction = (CancelAction) intent.getSerializableExtra("cancelAction");
  _slots = (SlotList) intent.getSerializableExtra("slots");
  _stateless = _slots != null;
  if (!_stateless) {
@@ -182,11 +178,10 @@ private void selectPassword() {
 
  @Override
  public void onBackPressed() {
- switch (_cancelAction) {
- case KILL:
- finishAffinity();
- case CLOSE:
- finish();
+ if (_stateless) {
+ super.onBackPressed();
+ } else {
+ finishAffinity();
  }
  }
 

app/src/main/java/com/beemdevelopment/aegis/ui/MainActivity.java

@@ -25,7 +25,7 @@
 import androidx.appcompat.widget.SearchView;
 
 import com.beemdevelopment.aegis.AegisApplication;
-import com.beemdevelopment.aegis.CancelAction;
+import com.beemdevelopment.aegis.Preferences;
 import com.beemdevelopment.aegis.R;
 import com.beemdevelopment.aegis.SortCategory;
 import com.beemdevelopment.aegis.ViewMode;
@@ -523,8 +523,8 @@ public void onBackPressed() {
  return;
  }
 
- if (_app.isAutoLockEnabled()) {
- _app.lock();
+ if (_app.isAutoLockEnabled(Preferences.AUTO_LOCK_ON_BACK_BUTTON)) {
+ _app.lock(false);
  return;
  }
 
@@ -596,7 +596,7 @@ public boolean onOptionsItemSelected(MenuItem item) {
  return true;
  }
  case R.id.action_lock:
- _app.lock();
+ _app.lock(true);
  return true;
  default:
  if (item.getGroupId() == R.id.action_filter_group) {
@@ -655,7 +655,6 @@ private void loadEntries() {
  private void startAuthActivity(boolean inhibitBioPrompt) {
  if (!_isAuthenticating) {
  Intent intent = new Intent(this, AuthActivity.class);
- intent.putExtra("cancelAction", CancelAction.KILL);
  intent.putExtra("inhibitBioPrompt", inhibitBioPrompt);
  startActivityForResult(intent, CODE_DECRYPT);
  _isAuthenticating = true;
@@ -747,19 +746,19 @@ public void onScroll(int dx, int dy) {
  public void onListChange() { _fabScrollHelper.setVisible(true); }
 
  @Override
- public void onLocked() {
+ public void onLocked(boolean userInitiated) {
  if (_actionMode != null) {
  _actionMode.finish();
  }
 
  _entryListView.clearEntries();
  _loaded = false;
 
- if (isOpen()) {
+ if (userInitiated) {
  startAuthActivity(true);
+ } else {
+ super.onLocked(userInitiated);
  }
-
- super.onLocked();
  }
 
  private void copyEntryCode(VaultEntry entry) {