Store nickname and password across screen rotations.

briar-android/src/main/java/org/briarproject/briar/android/login/AuthorNameFragment.java

@@ -8,15 +8,21 @@ import android.view.View;
 import android.view.ViewGroup;
 import android.widget.Button;
 
+import org.briarproject.bramble.api.nullsafety.MethodsNotNullByDefault;
+import org.briarproject.bramble.api.nullsafety.ParametersNotNullByDefault;
 import org.briarproject.bramble.util.StringUtils;
 import org.briarproject.briar.R;
 import org.briarproject.briar.android.activity.ActivityComponent;
 
+import javax.annotation.Nullable;
+
 import static android.view.inputmethod.EditorInfo.IME_ACTION_NEXT;
 import static android.view.inputmethod.EditorInfo.IME_ACTION_NONE;
 import static org.briarproject.bramble.api.identity.AuthorConstants.MAX_AUTHOR_NAME_LENGTH;
 import static org.briarproject.briar.android.util.UiUtils.setError;
 
+@MethodsNotNullByDefault
+@ParametersNotNullByDefault
 public class AuthorNameFragment extends SetupFragment {
 
 	private final static String TAG = AuthorNameFragment.class.getName();
@@ -30,8 +36,9 @@ public class AuthorNameFragment extends SetupFragment {
 	}
 
 	@Override
-	public View onCreateView(LayoutInflater inflater, ViewGroup container,
-			Bundle savedInstanceState) {
+	public View onCreateView(LayoutInflater inflater,
+			@Nullable ViewGroup container,
+			@Nullable Bundle savedInstanceState) {
 		getActivity().setTitle(getString(R.string.setup_title));
 		View v = inflater.inflate(R.layout.fragment_setup_author_name,
 				container, false);
@@ -75,6 +82,7 @@ public class AuthorNameFragment extends SetupFragment {
 	@Override
 	public void onClick(View view) {
 		setupController.setAuthorName(authorNameInput.getText().toString());
+		setupController.showPasswordFragment();
 	}
 
 }

briar-android/src/main/java/org/briarproject/briar/android/login/DozeFragment.java

@@ -10,7 +10,8 @@ import android.view.ViewGroup;
 import android.widget.Button;
 import android.widget.ProgressBar;
 
-import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
+import org.briarproject.bramble.api.nullsafety.MethodsNotNullByDefault;
+import org.briarproject.bramble.api.nullsafety.ParametersNotNullByDefault;
 import org.briarproject.briar.R;
 import org.briarproject.briar.android.activity.ActivityComponent;
 import org.briarproject.briar.android.login.PowerView.OnCheckedChangedListener;
@@ -21,7 +22,8 @@ import static android.view.View.VISIBLE;
 import static org.briarproject.briar.android.activity.RequestCodes.REQUEST_DOZE_WHITELISTING;
 import static org.briarproject.briar.android.util.UiUtils.showOnboardingDialog;
 
-@NotNullByDefault
+@MethodsNotNullByDefault
+@ParametersNotNullByDefault
 public class DozeFragment extends SetupFragment
 		implements OnCheckedChangedListener {
 

briar-android/src/main/java/org/briarproject/briar/android/login/PasswordFragment.java

@@ -11,15 +11,21 @@ import android.view.inputmethod.InputMethodManager;
 import android.widget.Button;
 import android.widget.ProgressBar;
 
+import org.briarproject.bramble.api.nullsafety.MethodsNotNullByDefault;
+import org.briarproject.bramble.api.nullsafety.ParametersNotNullByDefault;
 import org.briarproject.briar.R;
 import org.briarproject.briar.android.activity.ActivityComponent;
 import org.briarproject.briar.android.util.UiUtils;
 
+import javax.annotation.Nullable;
+
 import static android.content.Context.INPUT_METHOD_SERVICE;
 import static android.view.View.INVISIBLE;
 import static android.view.View.VISIBLE;
 import static org.briarproject.bramble.api.crypto.PasswordStrengthEstimator.QUITE_WEAK;
 
+@MethodsNotNullByDefault
+@ParametersNotNullByDefault
 public class PasswordFragment extends SetupFragment {
 
 	private final static String TAG = PasswordFragment.class.getName();
@@ -37,8 +43,9 @@ public class PasswordFragment extends SetupFragment {
 	}
 
 	@Override
-	public View onCreateView(LayoutInflater inflater, ViewGroup container,
-			Bundle savedInstanceState) {
+	public View onCreateView(LayoutInflater inflater,
+			@Nullable ViewGroup container,
+			@Nullable Bundle savedInstanceState) {
 		getActivity().setTitle(getString(R.string.setup_password_intro));
 		View v = inflater.inflate(R.layout.fragment_setup_password, container,
 						false);
@@ -109,12 +116,11 @@ public class PasswordFragment extends SetupFragment {
 			nextButton.setVisibility(INVISIBLE);
 			progressBar.setVisibility(VISIBLE);
 		}
-		String password = passwordEntry.getText().toString();
 		IBinder token = passwordEntry.getWindowToken();
 		Object o = getContext().getSystemService(INPUT_METHOD_SERVICE);
 		((InputMethodManager) o).hideSoftInputFromWindow(token, 0);
-		setupController.setPassword(password);
-		setupController.showDozeOrCreateAccount();
+		setupController.setPassword(passwordEntry.getText().toString());
+		setupController.showDozeFragmentOrCreateAccount();
 	}
 
 }

briar-android/src/main/java/org/briarproject/briar/android/login/SetupActivity.java

@@ -4,23 +4,34 @@ import android.annotation.TargetApi;
 import android.content.Intent;
 import android.os.Bundle;
 
+import org.briarproject.bramble.api.nullsafety.MethodsNotNullByDefault;
+import org.briarproject.bramble.api.nullsafety.ParametersNotNullByDefault;
 import org.briarproject.briar.R;
 import org.briarproject.briar.android.activity.ActivityComponent;
 import org.briarproject.briar.android.activity.BaseActivity;
 import org.briarproject.briar.android.fragment.BaseFragment.BaseFragmentListener;
 
+import javax.annotation.Nullable;
 import javax.inject.Inject;
 
 import static android.content.Intent.FLAG_ACTIVITY_NEW_TASK;
 
+@MethodsNotNullByDefault
+@ParametersNotNullByDefault
 public class SetupActivity extends BaseActivity
 		implements BaseFragmentListener {
 
+	private static final String STATE_KEY_AUTHOR_NAME = "authorName";
+	private static final String STATE_KEY_PASSWORD = "password";
+
 	@Inject
 	SetupController setupController;
 
+	@Nullable
+	private String authorName, password;
+
 	@Override
-	public void onCreate(Bundle state) {
+	public void onCreate(@Nullable Bundle state) {
 		super.onCreate(state);
 		// fade-in after splash screen instead of default animation
 		overridePendingTransition(R.anim.fade_in, R.anim.fade_out);
@@ -28,6 +39,9 @@ public class SetupActivity extends BaseActivity
 
 		if (state == null) {
 			showInitialFragment(AuthorNameFragment.newInstance());
+		} else {
+			authorName = state.getString(STATE_KEY_AUTHOR_NAME);
+			password = state.getString(STATE_KEY_PASSWORD);
 		}
 	}
 
@@ -37,16 +51,46 @@ public class SetupActivity extends BaseActivity
 		setupController.setSetupActivity(this);
 	}
 
-	public void showPasswordFragment() {
+	@Override
+	protected void onSaveInstanceState(Bundle state) {
+		super.onSaveInstanceState(state);
+		if (authorName != null)
+			state.putString(STATE_KEY_AUTHOR_NAME, authorName);
+		if (password != null)
+			state.putString(STATE_KEY_PASSWORD, password);
+	}
+
+	@Nullable
+	String getAuthorName() {
+		return authorName;
+	}
+
+	void setAuthorName(String authorName) {
+		this.authorName = authorName;
+	}
+
+	@Nullable
+	String getPassword() {
+		return password;
+	}
+
+	void setPassword(String password) {
+		this.password = password;
+	}
+
+	void showPasswordFragment() {
+		if (authorName == null) throw new IllegalStateException();
 		showNextFragment(PasswordFragment.newInstance());
 	}
 
 	@TargetApi(23)
-	public void showDozeFragment() {
+	void showDozeFragment() {
+		if (authorName == null) throw new IllegalStateException();
+		if (password == null) throw new IllegalStateException();
 		showNextFragment(DozeFragment.newInstance());
 	}
 
-	public void showApp() {
+	void showApp() {
 		Intent i = new Intent(this, OpenDatabaseActivity.class);
 		i.setFlags(FLAG_ACTIVITY_NEW_TASK);
 		startActivity(i);

briar-android/src/main/java/org/briarproject/briar/android/login/SetupController.java

@@ -1,7 +1,6 @@
 package org.briarproject.briar.android.login;
 
 import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
-import org.briarproject.briar.android.controller.handler.ResultHandler;
 
 @NotNullByDefault
 public interface SetupController {
@@ -16,15 +15,17 @@ public interface SetupController {
 
 	float estimatePasswordStrength(String password);
 
+	/**
+	 * This should be called after the author name has been set.
+	 */
+	void showPasswordFragment();
+
 	/**
 	 * This should be called after the author name and the password have been
-	 * set. It decides whether to ask for doze exception or create the account
+	 * set. It decides whether to show the doze fragment or create the account
 	 * right away.
 	 */
-	void showDozeOrCreateAccount();
+	void showDozeFragmentOrCreateAccount();
 
 	void createAccount();
-
-	void createAccount(ResultHandler<Void> resultHandler);
-
 }

briar-android/src/main/java/org/briarproject/briar/android/login/SetupControllerImpl.java

@@ -20,8 +20,6 @@ import javax.inject.Inject;
 public class SetupControllerImpl extends PasswordControllerImpl
 		implements SetupController {
 
-	@Nullable
-	private String authorName, password;
 	@Nullable
 	private SetupActivity setupActivity;
 
@@ -48,28 +46,32 @@ public class SetupControllerImpl extends PasswordControllerImpl
 
 	@Override
 	public void setAuthorName(String authorName) {
-		this.authorName = authorName;
+		if (setupActivity == null) throw new IllegalStateException();
+		setupActivity.setAuthorName(authorName);
+	}
+
+	@Override
+	public void setPassword(String password) {
+		if (setupActivity == null) throw new IllegalStateException();
+		setupActivity.setPassword(password);
+	}
+
+	@Override
+	public void showPasswordFragment() {
 		if (setupActivity == null) throw new IllegalStateException();
 		setupActivity.showPasswordFragment();
 	}
 
 	@Override
-	public void setPassword(String password) {
-		this.password = password;
-	}
-
-	@Override
-	public void showDozeOrCreateAccount() {
+	public void showDozeFragmentOrCreateAccount() {
 		if (setupActivity == null) throw new IllegalStateException();
-		if (needToShowDozeFragment()) {
-			setupActivity.showDozeFragment();
-		} else {
-			createAccount();
-		}
+		if (needToShowDozeFragment()) setupActivity.showDozeFragment();
+		else createAccount();
 	}
 
 	@Override
 	public void createAccount() {
+		if (setupActivity == null) throw new IllegalStateException();
 		UiResultHandler<Void> resultHandler =
 				new UiResultHandler<Void>(setupActivity) {
 					@Override
@@ -82,10 +84,13 @@ public class SetupControllerImpl extends PasswordControllerImpl
 		createAccount(resultHandler);
 	}
 
-	@Override
-	public void createAccount(ResultHandler<Void> resultHandler) {
-		if (authorName == null || password == null)
-			throw new IllegalStateException();
+	// Package access for testing
+	void createAccount(ResultHandler<Void> resultHandler) {
+		if (setupActivity == null) throw new IllegalStateException();
+		String authorName = setupActivity.getAuthorName();
+		if (authorName == null) throw new IllegalStateException();
+		String password = setupActivity.getPassword();
+		if (password == null) throw new IllegalStateException();
 		cryptoExecutor.execute(() -> {
 			databaseConfig.setLocalAuthorName(authorName);
 			SecretKey key = crypto.generateSecretKey();

briar-android/src/test/java/org/briarproject/briar/android/login/PasswordFragmentTest.java

@@ -73,7 +73,7 @@ public class PasswordFragmentTest {
 
 		// assert controller has been called properly
 		verify(setupController, times(1)).setPassword(safePass);
-		verify(setupController, times(1)).showDozeOrCreateAccount();
+		verify(setupController, times(1)).showDozeFragmentOrCreateAccount();
 	}
 
 	@Test

briar-android/src/test/java/org/briarproject/briar/android/login/SetupActivityTest.java

@@ -15,22 +15,8 @@ import org.robolectric.RobolectricTestRunner;
 import org.robolectric.annotation.Config;
 
 import static junit.framework.Assert.assertEquals;
-import static org.briarproject.bramble.api.crypto.PasswordStrengthEstimator.NONE;
-import static org.briarproject.bramble.api.crypto.PasswordStrengthEstimator.QUITE_STRONG;
-import static org.briarproject.bramble.api.crypto.PasswordStrengthEstimator.QUITE_WEAK;
-import static org.briarproject.bramble.api.crypto.PasswordStrengthEstimator.STRONG;
-import static org.briarproject.bramble.api.crypto.PasswordStrengthEstimator.WEAK;
 import static org.briarproject.bramble.api.identity.AuthorConstants.MAX_AUTHOR_NAME_LENGTH;
 import static org.briarproject.bramble.util.StringUtils.getRandomString;
-import static org.junit.Assert.assertTrue;
-import static org.mockito.Matchers.anyString;
-import static org.mockito.Matchers.eq;
-import static org.mockito.Mockito.mock;
-import static org.mockito.Mockito.timeout;
-import static org.mockito.Mockito.times;
-import static org.mockito.Mockito.verify;
-import static org.mockito.Mockito.when;
-import static org.robolectric.Shadows.shadowOf;
 
 @RunWith(RobolectricTestRunner.class)
 @Config(sdk = 21, application = TestBriarApplication.class,

briar-android/src/test/java/org/briarproject/briar/android/login/SetupControllerImplTest.java

@@ -47,10 +47,17 @@ public class SetupControllerImplTest extends BrambleMockTestCase {
 	}
 
 	@Test
+	@SuppressWarnings("ResultOfMethodCallIgnored")
 	public void testCreateAccount() {
 		context.checking(new Expectations() {{
-			// Setting the author name shows the password fragment
-			oneOf(setupActivity).showPasswordFragment();
+			// Set the author name and password
+			oneOf(setupActivity).setAuthorName(authorName);
+			oneOf(setupActivity).setPassword(password);
+			// Get the author name and password
+			oneOf(setupActivity).getAuthorName();
+			will(returnValue(authorName));
+			oneOf(setupActivity).getPassword();
+			will(returnValue(password));
 			// Generate a database key
 			oneOf(crypto).generateSecretKey();
 			will(returnValue(key));