Add a minimal MailboxStatusFragment

briar-android/src/main/java/org/briarproject/briar/android/AndroidComponent.java

@@ -46,6 +46,7 @@ import org.briarproject.briar.android.logging.CachingLogHandler;
 import org.briarproject.briar.android.login.SignInReminderReceiver;
 import org.briarproject.briar.android.mailbox.ErrorFragment;
 import org.briarproject.briar.android.mailbox.MailboxScanFragment;
+import org.briarproject.briar.android.mailbox.MailboxStatusFragment;
 import org.briarproject.briar.android.mailbox.OfflineFragment;
 import org.briarproject.briar.android.mailbox.SetupDownloadFragment;
 import org.briarproject.briar.android.removabledrive.ChooserFragment;
@@ -251,4 +252,6 @@ public interface AndroidComponent
 	void inject(OfflineFragment offlineFragment);
 
 	void inject(ErrorFragment errorFragment);
+
+	void inject(MailboxStatusFragment mailboxStatusFragment);
 }

briar-android/src/main/java/org/briarproject/briar/android/mailbox/MailboxActivity.java

@@ -3,10 +3,8 @@ package org.briarproject.briar.android.mailbox;
 import android.os.Bundle;
 import android.view.MenuItem;
 import android.widget.ProgressBar;
-import android.widget.Toast;
 
 import org.briarproject.bramble.api.mailbox.MailboxPairingState;
-import org.briarproject.bramble.api.mailbox.MailboxStatus;
 import org.briarproject.bramble.api.nullsafety.MethodsNotNullByDefault;
 import org.briarproject.bramble.api.nullsafety.ParametersNotNullByDefault;
 import org.briarproject.briar.R;
@@ -23,7 +21,6 @@ import androidx.lifecycle.ViewModelProvider;
 
 import static android.view.View.INVISIBLE;
 import static android.view.View.VISIBLE;
-import static android.widget.Toast.LENGTH_LONG;
 import static org.briarproject.briar.android.util.UiUtils.showFragment;
 
 @MethodsNotNullByDefault
@@ -66,7 +63,7 @@ public class MailboxActivity extends BriarActivity {
 			} else if (state instanceof MailboxState.OfflineWhenPairing) {
 				onOffline();
 			} else if (state instanceof MailboxState.IsPaired) {
-				onIsPaired(((MailboxState.IsPaired) state).mailboxStatus);
+				onIsPaired();
 			} else {
 				throw new AssertionError("Unknown state: " + state);
 			}
@@ -167,10 +164,10 @@ public class MailboxActivity extends BriarActivity {
 				OfflineFragment.TAG);
 	}
 
-	private void onIsPaired(MailboxStatus mailboxStatus) {
+	private void onIsPaired() {
 		progressBar.setVisibility(INVISIBLE);
-		// TODO
-		Toast.makeText(this, "NOT IMPLEMENTED", LENGTH_LONG).show();
+		showFragment(getSupportFragmentManager(), new MailboxStatusFragment(),
+				MailboxStatusFragment.TAG, false);
 	}
 
 	private void repopulateBackStack() {

briar-android/src/main/java/org/briarproject/briar/android/mailbox/MailboxStatusFragment.java

@@ -0,0 +1,85 @@
+package org.briarproject.briar.android.mailbox;
+
+import android.content.Context;
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.TextView;
+
+import org.briarproject.bramble.api.nullsafety.MethodsNotNullByDefault;
+import org.briarproject.bramble.api.nullsafety.ParametersNotNullByDefault;
+import org.briarproject.briar.R;
+
+import javax.inject.Inject;
+
+import androidx.annotation.Nullable;
+import androidx.fragment.app.Fragment;
+import androidx.fragment.app.FragmentActivity;
+import androidx.lifecycle.ViewModelProvider;
+
+import static java.util.Objects.requireNonNull;
+import static org.briarproject.briar.android.AppModule.getAndroidComponent;
+import static org.briarproject.briar.android.util.UiUtils.formatDate;
+
+@MethodsNotNullByDefault
+@ParametersNotNullByDefault
+public class MailboxStatusFragment extends Fragment {
+
+	static final String TAG = MailboxStatusFragment.class.getName();
+
+	@Inject
+	ViewModelProvider.Factory viewModelFactory;
+
+	private MailboxViewModel viewModel;
+
+	@Override
+	public void onAttach(Context context) {
+		super.onAttach(context);
+		FragmentActivity activity = requireActivity();
+		getAndroidComponent(activity).inject(this);
+		viewModel = new ViewModelProvider(activity, viewModelFactory)
+				.get(MailboxViewModel.class);
+	}
+
+	@Nullable
+	@Override
+	public View onCreateView(LayoutInflater inflater,
+			@Nullable ViewGroup container,
+			@Nullable Bundle savedInstanceState) {
+		return inflater.inflate(R.layout.fragment_mailbox_status,
+				container, false);
+	}
+
+	@Override
+	public void onViewCreated(View v, @Nullable Bundle savedInstanceState) {
+		super.onViewCreated(v, savedInstanceState);
+		MailboxState.IsPaired state =
+				(MailboxState.IsPaired) viewModel.getState().getLastValue();
+		requireNonNull(state); // TODO check assumption
+		TextView statusInfoView = v.findViewById(R.id.statusInfoView);
+		long lastSuccess = state.mailboxStatus.getTimeOfLastSuccess();
+		String lastConnectionText;
+		if (lastSuccess < 0) {
+			lastConnectionText = getString(R.string.pref_lock_timeout_never);
+		} else {
+			lastConnectionText = formatDate(requireContext(), lastSuccess);
+		}
+		String statusInfoText = getString(
+				R.string.mailbox_status_connected_info, lastConnectionText);
+		statusInfoView.setText(statusInfoText);
+		// TODO
+		//  * react to status changes
+		//  * detect problems and show them
+		//  * update connection time periodically like conversation timestamps
+		//  * add "Check connection" button
+		//  * add "Unlink" button with confirmation dialog
+	}
+
+	@Override
+	public void onStart() {
+		super.onStart();
+		requireActivity().setTitle(R.string.mailbox_status_title);
+	}
+
+}