Replaced last connection time with time of last private message.

briar-android/res/values/color.xml

@@ -10,6 +10,7 @@
     <color name="unread_background">#FFFFFF</color>
 	<color name="horizontal_border">#CCCCCC</color>
 	<color name="groups_available_background">#FCCF1C</color>
+	<color name="no_private_messages">#AAAAAA</color>
 	<color name="no_posts">#AAAAAA</color>
 	<color name="settings_title_text">#2D3E50</color>
 	<color name="settings_title_underline">#2D3E50</color>

briar-android/res/values/strings.xml

@@ -23,7 +23,6 @@
     <string name="contact_list_title">Contacts</string>
     <string name="no_contacts">No contacts</string>
     <string name="contact_connected">Connected</string>
-    <string name="format_last_connected">Last connected &lt;br /&gt; %s</string>
     <string name="add_contact_title">Add a Contact</string>
     <string name="your_nickname">Your nickname: </string>
     <string name="face_to_face">For security reasons you must be face-to-face with the person you want to add as a contact.\n\nThis will prevent anyone from impersonating you or reading your messages in future.</string>

briar-android/src/org/briarproject/android/contact/ContactListActivity.java

@@ -12,7 +12,6 @@ import static org.briarproject.android.util.CommonLayoutParams.MATCH_WRAP;
 import static org.briarproject.android.util.CommonLayoutParams.MATCH_WRAP_1;
 
 import java.util.Collection;
-import java.util.Map;
 import java.util.logging.Logger;
 
 import javax.inject.Inject;
@@ -127,15 +126,12 @@ ConnectionListener {
 			public void run() {
 				try {
 					long now = System.currentTimeMillis();
-					Map<ContactId, Long> times = db.getLastConnected();
 					for(Contact c : db.getContacts()) {
-						Long lastConnected = times.get(c.getId());
-						if(lastConnected == null) continue;
 						try {
 							GroupId inbox = db.getInboxGroupId(c.getId());
 							Collection<MessageHeader> headers =
 									db.getInboxMessageHeaders(c.getId());
-							displayContact(c, lastConnected, inbox, headers);
+							displayContact(c, inbox, headers);
 						} catch(NoSuchContactException e) {
 							// Continue
 						}
@@ -164,7 +160,7 @@ ConnectionListener {
 		});
 	}
 
-	private void displayContact(final Contact c, final long lastConnected,
+	private void displayContact(final Contact c,
 			final GroupId inbox, final Collection<MessageHeader> headers) {
 		runOnUiThread(new Runnable() {
 			public void run() {
@@ -175,8 +171,7 @@ ConnectionListener {
 				ContactListItem item = findItem(c.getId());
 				if(item != null) adapter.remove(item);
 				// Add a new item
-				adapter.add(new ContactListItem(c, connected, lastConnected,
-						inbox, headers));
+				adapter.add(new ContactListItem(c, connected, inbox, headers));
 				adapter.sort(ContactListItemComparator.INSTANCE);
 				adapter.notifyDataSetChanged();
 			}
@@ -308,12 +303,10 @@ ConnectionListener {
 		runOnUiThread(new Runnable() {
 			public void run() {
 				ContactListItem item = findItem(c);
-				if(item == null) return;
-				if(LOG.isLoggable(INFO))
-					LOG.info("Setting connection status " + connected);
-				item.setConnected(connected);
-				item.setLastConnected(System.currentTimeMillis());
-				adapter.notifyDataSetChanged();
+				if(item != null) {
+					item.setConnected(connected);
+					adapter.notifyDataSetChanged();
+				}
 			}
 		});
 	}

briar-android/src/org/briarproject/android/contact/ContactListAdapter.java

@@ -12,7 +12,6 @@ import org.briarproject.android.util.LayoutUtils;
 
 import android.content.Context;
 import android.content.res.Resources;
-import android.text.Html;
 import android.text.format.DateUtils;
 import android.view.View;
 import android.view.ViewGroup;
@@ -62,17 +61,19 @@ class ContactListAdapter extends ArrayAdapter<ContactListItem> {
 		else name.setText(contactName);
 		layout.addView(name);
 
-		TextView connected = new TextView(ctx);
-		connected.setPadding(0, pad, pad, pad);
-		if(item.isConnected()) {
-			connected.setText(R.string.contact_connected);
+		if(item.isEmpty()) {
+			TextView noMessages = new TextView(ctx);
+			noMessages.setPadding(pad, pad, pad, pad);
+			noMessages.setTextColor(res.getColor(R.color.no_private_messages));
+			noMessages.setText(R.string.no_private_messages);
+			layout.addView(noMessages);
 		} else {
-			String format = res.getString(R.string.format_last_connected);
-			long then = item.getLastConnected();
-			CharSequence ago = DateUtils.getRelativeTimeSpanString(then);
-			connected.setText(Html.fromHtml(String.format(format, ago)));
+			TextView date = new TextView(ctx);
+			date.setPadding(pad, pad, pad, pad);
+			long timestamp = item.getTimestamp();
+			date.setText(DateUtils.getRelativeTimeSpanString(ctx, timestamp));
+			layout.addView(date);
 		}
-		layout.addView(connected);
 
 		return layout;
 	}

briar-android/src/org/briarproject/android/contact/ContactListItem.java

@@ -11,18 +11,15 @@ class ContactListItem {
 
 	private final Contact contact;
 	private final GroupId inbox;
-	private boolean connected;
-	private long lastConnected;
-	private boolean empty;
+	private boolean connected, empty;
 	private long timestamp;
 	private int unread;
 
-	ContactListItem(Contact contact, boolean connected, long lastConnected,
-			GroupId inbox, Collection<MessageHeader> headers) {
+	ContactListItem(Contact contact, boolean connected, GroupId inbox,
+			Collection<MessageHeader> headers) {
 		this.contact = contact;
 		this.inbox = inbox;
 		this.connected = connected;
-		this.lastConnected = lastConnected;
 		setHeaders(headers);
 	}
 
@@ -46,14 +43,6 @@ class ContactListItem {
 		return inbox;
 	}
 
-	long getLastConnected() {
-		return lastConnected;
-	}
-
-	void setLastConnected(long lastConnected) {
-		this.lastConnected = lastConnected;
-	}
-
 	boolean isConnected() {
 		return connected;
 	}

briar-api/src/org/briarproject/api/db/DatabaseComponent.java

@@ -198,12 +198,6 @@ public interface DatabaseComponent {
 	Collection<MessageHeader> getInboxMessageHeaders(ContactId c)
 			throws DbException;
 
-	/**
-	 * Returns the time at which a connection to each contact was last opened
-	 * or closed.
-	 */
-	Map<ContactId, Long> getLastConnected() throws DbException;
-
 	/** Returns the local pseudonym with the given ID. */
 	LocalAuthor getLocalAuthor(AuthorId a) throws DbException;
 

briar-core/src/org/briarproject/db/Database.java

@@ -326,14 +326,6 @@ interface Database<T> {
 	Collection<MessageHeader> getInboxMessageHeaders(T txn, ContactId c)
 			throws DbException;
 
-	/**
-	 * Returns the time at which a connection to each contact was last opened
-	 * or closed.
-	 * <p>
-	 * Locking: window read.
-	 */
-	Map<ContactId, Long> getLastConnected(T txn) throws DbException;
-
 	/**
 	 * Returns the local pseudonym with the given ID.
 	 * <p>
@@ -732,13 +724,6 @@ interface Database<T> {
 	 */
 	public void setInboxGroup(T txn, ContactId c, Group g) throws DbException;
 
-	/**
-	 * Sets the time at which a connection to the given contact was last made.
-	 * <p>
-	 * Locking: window write.
-	 */
-	void setLastConnected(T txn, ContactId c, long now) throws DbException;
-
 	/**
 	 * Marks a message as read or unread.
 	 * <p>

briar-core/src/org/briarproject/db/DatabaseComponentImpl.java

@@ -77,7 +77,6 @@ import org.briarproject.api.messaging.SubscriptionAck;
 import org.briarproject.api.messaging.SubscriptionUpdate;
 import org.briarproject.api.messaging.TransportAck;
 import org.briarproject.api.messaging.TransportUpdate;
-import org.briarproject.api.system.Clock;
 import org.briarproject.api.transport.Endpoint;
 import org.briarproject.api.transport.TemporarySecret;
 
@@ -119,7 +118,6 @@ DatabaseCleaner.Callback {
 	private final Database<T> db;
 	private final DatabaseCleaner cleaner;
 	private final ShutdownManager shutdown;
-	private final Clock clock;
 
 	private final Collection<EventListener> listeners =
 			new CopyOnWriteArrayList<EventListener>();
@@ -130,11 +128,10 @@ DatabaseCleaner.Callback {
 
 	@Inject
 	DatabaseComponentImpl(Database<T> db, DatabaseCleaner cleaner,
-			ShutdownManager shutdown, Clock clock) {
+			ShutdownManager shutdown) {
 		this.db = db;
 		this.cleaner = cleaner;
 		this.shutdown = shutdown;
-		this.clock = clock;
 	}
 
 	public boolean open() throws DbException, IOException {
@@ -965,23 +962,6 @@ DatabaseCleaner.Callback {
 		}
 	}
 
-	public Map<ContactId, Long> getLastConnected() throws DbException {
-		windowLock.readLock().lock();
-		try {
-			T txn = db.startTransaction();
-			try {
-				Map<ContactId, Long> times = db.getLastConnected(txn);
-				db.commitTransaction(txn);
-				return times;
-			} catch(DbException e) {
-				db.abortTransaction(txn);
-				throw e;
-			}
-		} finally {
-			windowLock.readLock().unlock();
-		}
-	}
-
 	public LocalAuthor getLocalAuthor(AuthorId a) throws DbException {
 		identityLock.readLock().lock();
 		try {
@@ -1244,10 +1224,6 @@ DatabaseCleaner.Callback {
 							throw new NoSuchTransportException();
 						long counter = db.incrementConnectionCounter(txn, c, t,
 								period);
-						if(counter != -1) {
-							long now = clock.currentTimeMillis();
-							db.setLastConnected(txn, c, now);
-						}
 						db.commitTransaction(txn);
 						return counter;
 					} catch(DbException e) {
@@ -1802,7 +1778,6 @@ DatabaseCleaner.Callback {
 							throw new NoSuchTransportException();
 						db.setConnectionWindow(txn, c, t, period, centre,
 								bitmap);
-						db.setLastConnected(txn, c, clock.currentTimeMillis());
 						db.commitTransaction(txn);
 					} catch(DbException e) {
 						db.abortTransaction(txn);

briar-core/src/org/briarproject/db/DatabaseModule.java

@@ -17,7 +17,6 @@ import org.briarproject.api.db.DatabaseConfig;
 import org.briarproject.api.db.DatabaseExecutor;
 import org.briarproject.api.lifecycle.LifecycleManager;
 import org.briarproject.api.lifecycle.ShutdownManager;
-import org.briarproject.api.system.Clock;
 import org.briarproject.api.system.FileUtils;
 import org.briarproject.system.SystemClock;
 
@@ -54,9 +53,8 @@ public class DatabaseModule extends AbstractModule {
 
 	@Provides @Singleton
 	DatabaseComponent getDatabaseComponent(Database<Connection> db,
-			DatabaseCleaner cleaner, ShutdownManager shutdown, Clock clock) {
-		return new DatabaseComponentImpl<Connection>(db, cleaner, shutdown,
-				clock);
+			DatabaseCleaner cleaner, ShutdownManager shutdown) {
+		return new DatabaseComponentImpl<Connection>(db, cleaner, shutdown);
 	}
 
 	@Provides @Singleton @DatabaseExecutor

briar-core/src/org/briarproject/db/JdbcDatabase.java

@@ -62,7 +62,7 @@ import org.briarproject.api.transport.TemporarySecret;
  */
 abstract class JdbcDatabase implements Database<Connection> {
 
-	private static final int SCHEMA_VERSION = 5;
+	private static final int SCHEMA_VERSION = 6;
 	private static final int MIN_SCHEMA_VERSION = 5;
 
 	private static final String CREATE_SETTINGS =
@@ -326,16 +326,6 @@ abstract class JdbcDatabase implements Database<Connection> {
 					+ " REFERENCES transports (transportId)"
 					+ " ON DELETE CASCADE)";
 
-	// Locking: window
-	private static final String CREATE_CONNECTION_TIMES =
-			"CREATE TABLE connectionTimes"
-					+ " (contactId INT NOT NULL,"
-					+ " lastConnected BIGINT NOT NULL,"
-					+ " PRIMARY KEY (contactId),"
-					+ " FOREIGN KEY (contactId)"
-					+ " REFERENCES contacts (contactId)"
-					+ " ON DELETE CASCADE)";
-
 	private static final Logger LOG =
 			Logger.getLogger(JdbcDatabase.class.getName());
 
@@ -445,7 +435,6 @@ abstract class JdbcDatabase implements Database<Connection> {
 			s.executeUpdate(insertTypeNames(CREATE_CONTACT_TRANSPORT_VERSIONS));
 			s.executeUpdate(insertTypeNames(CREATE_ENDPOINTS));
 			s.executeUpdate(insertTypeNames(CREATE_SECRETS));
-			s.executeUpdate(insertTypeNames(CREATE_CONNECTION_TIMES));
 			s.close();
 		} catch(SQLException e) {
 			tryToClose(s);
@@ -633,15 +622,6 @@ abstract class JdbcDatabase implements Database<Connection> {
 				}
 				ps.close();
 			}
-			// Create a connection time row
-			sql = "INSERT INTO connectionTimes (contactId, lastConnected)"
-					+ " VALUES (?, ?)";
-			ps = txn.prepareStatement(sql);
-			ps.setInt(1, c.getInt());
-			ps.setLong(2, clock.currentTimeMillis());
-			affected = ps.executeUpdate();
-			if(affected != 1) throw new DbStateException();
-			ps.close();
 			// Create a retention version row
 			sql = "INSERT INTO retentionVersions (contactId, retention,"
 					+ " localVersion, localAcked, remoteVersion, remoteAcked,"
@@ -1525,27 +1505,6 @@ abstract class JdbcDatabase implements Database<Connection> {
 		}
 	}
 
-	public Map<ContactId, Long> getLastConnected(Connection txn)
-			throws DbException {
-		PreparedStatement ps = null;
-		ResultSet rs = null;
-		try {
-			String sql = "SELECT contactId, lastConnected FROM connectionTimes";
-			ps = txn.prepareStatement(sql);
-			rs = ps.executeQuery();
-			Map<ContactId, Long> times = new HashMap<ContactId, Long>();
-			while(rs.next())
-				times.put(new ContactId(rs.getInt(1)), rs.getLong(2));
-			rs.close();
-			ps.close();
-			return Collections.unmodifiableMap(times);
-		} catch(SQLException e) {
-			tryToClose(rs);
-			tryToClose(ps);
-			throw new DbException(e);
-		}
-	}
-
 	public LocalAuthor getLocalAuthor(Connection txn, AuthorId a)
 			throws DbException {
 		PreparedStatement ps = null;
@@ -3087,24 +3046,6 @@ abstract class JdbcDatabase implements Database<Connection> {
 		}
 	}
 
-	public void setLastConnected(Connection txn, ContactId c, long now)
-			throws DbException {
-		PreparedStatement ps = null;
-		try {
-			String sql = "UPDATE connectionTimes SET lastConnected = ?"
-					+ " WHERE contactId = ?";
-			ps = txn.prepareStatement(sql);
-			ps.setLong(1, now);
-			ps.setInt(2, c.getInt());
-			int affected = ps.executeUpdate();
-			if(affected < 0 || affected > 1) throw new DbStateException();
-			ps.close();
-		} catch(SQLException e) {
-			tryToClose(ps);
-			throw new DbException(e);
-		}
-	}
-
 	public void setReadFlag(Connection txn, MessageId m, boolean read)
 			throws DbException {
 		PreparedStatement ps = null;

briar-tests/src/org/briarproject/db/DatabaseComponentImplTest.java

@@ -9,8 +9,6 @@ import org.briarproject.api.db.DatabaseComponent;
 import org.briarproject.api.db.DbException;
 import org.briarproject.api.lifecycle.ShutdownManager;
 import org.briarproject.db.DatabaseCleaner.Callback;
-import org.briarproject.system.SystemClock;
-
 import org.jmock.Expectations;
 import org.jmock.Mockery;
 import org.junit.Test;
@@ -75,7 +73,6 @@ public class DatabaseComponentImplTest extends DatabaseComponentTest {
 	private <T> DatabaseComponentImpl<T> createDatabaseComponentImpl(
 			Database<T> database, DatabaseCleaner cleaner,
 			ShutdownManager shutdown) {
-		return new DatabaseComponentImpl<T>(database, cleaner, shutdown,
-				new SystemClock());
+		return new DatabaseComponentImpl<T>(database, cleaner, shutdown);
 	}
 }