Create PrivateGroupManager Facade and stub implementation

briar-api/src/org/briarproject/api/clients/BaseMessageHeader.java

@@ -0,0 +1,45 @@
+package org.briarproject.api.clients;
+
+import org.briarproject.api.sync.MessageId;
+
+public abstract class BaseMessageHeader {
+
+	private final MessageId id;
+	private final long timestamp;
+	private final boolean local, read, sent, seen;
+
+	public BaseMessageHeader(MessageId id, long timestamp, boolean local,
+			boolean read, boolean sent, boolean seen) {
+
+		this.id = id;
+		this.timestamp = timestamp;
+		this.local = local;
+		this.read = read;
+		this.sent = sent;
+		this.seen = seen;
+	}
+
+	public MessageId getId() {
+		return id;
+	}
+
+	public long getTimestamp() {
+		return timestamp;
+	}
+
+	public boolean isLocal() {
+		return local;
+	}
+
+	public boolean isRead() {
+		return read;
+	}
+
+	public boolean isSent() {
+		return sent;
+	}
+
+	public boolean isSeen() {
+		return seen;
+	}
+}