7 files changed, 47 insertions, 38 deletions
diff --git a/src/jrummikub/util/Connection.java b/src/jrummikub/util/Connection.java
index b6a5a07..a14e747 100644
--- a/src/jrummikub/util/Connection.java
+++ b/src/jrummikub/util/Connection.java
@@ -1,5 +1,11 @@
 package jrummikub.util;
 
+/**
+ * A Connection object can be used to remove a listener from a event
+ */
 public interface Connection {
+	/**
+	 * Removes the listener
+	 */
 	public void remove();
 }
diff --git a/src/jrummikub/util/Event.java b/src/jrummikub/util/Event.java
index 491e10f..aa491da 100644
--- a/src/jrummikub/util/Event.java
+++ b/src/jrummikub/util/Event.java
@@ -4,29 +4,29 @@ import java.util.HashSet;
 
 /** Simple parameterless event generator */
 public class Event implements IEvent {
-  private HashSet<IListener> listeners = new HashSet<IListener>();
+	private HashSet<IListener> listeners = new HashSet<IListener>();
 
-  @Override
-  public Connection add(final IListener listener) {
-    listeners.add(listener);
-    return new Connection() {
-		
-		@Override
-		public void remove() {
-			Event.this.remove(listener);
-		}
-	};
-  }
+	@Override
+	public Connection add(final IListener listener) {
+		listeners.add(listener);
+		return new Connection() {
+
+			@Override
+			public void remove() {
+				Event.this.remove(listener);
+			}
+		};
+	}
 
-  @Override
-  public void remove(IListener listener) {
-    listeners.remove(listener);
-  }
+	@Override
+	public void remove(IListener listener) {
+		listeners.remove(listener);
+	}
 
-  /** Generate a single event */
-  public void emit() {
-    for (IListener listener : listeners) {
-      listener.handle();
-    }
-  }
+	/** Generate a single event */
+	public void emit() {
+		for (IListener listener : listeners) {
+			listener.handle();
+		}
+	}
 }
diff --git a/src/jrummikub/util/Event1.java b/src/jrummikub/util/Event1.java
index d721a7e..5e3391c 100644
--- a/src/jrummikub/util/Event1.java
+++ b/src/jrummikub/util/Event1.java
@@ -6,7 +6,7 @@ import java.util.HashSet;
  * Simple single parameter event generator
  * 
  * @param <T>
- *            type of the event parameter
+ *          type of the event parameter
  */
 public class Event1<T> implements IEvent1<T> {
 	private HashSet<IListener1<T>> listeners = new HashSet<IListener1<T>>();
@@ -14,8 +14,8 @@ public class Event1<T> implements IEvent1<T> {
 	@Override
 	public Connection add(final IListener1<T> listener) {
 		listeners.add(listener);
-	    return new Connection() {
-			
+		return new Connection() {
+
 			@Override
 			public void remove() {
 				Event1.this.remove(listener);
@@ -32,9 +32,9 @@ public class Event1<T> implements IEvent1<T> {
 	 * Generate a single event
 	 * 
 	 * @param value
-	 *            the event parameter
+	 *          the event parameter
 	 */
-  public void emit(T value) {
+	public void emit(T value) {
 		for (IListener1<T> listener : listeners) {
 			listener.handle(value);
 		}
diff --git a/src/jrummikub/util/Event2.java b/src/jrummikub/util/Event2.java
index 7087975..9bcee43 100644
--- a/src/jrummikub/util/Event2.java
+++ b/src/jrummikub/util/Event2.java
@@ -6,9 +6,9 @@ import java.util.HashSet;
  * Simple single parameter event generator
  * 
  * @param <T1>
- *            type of the first event parameter
+ *          type of the first event parameter
  * @param <T2>
- *            type of the second event parameter
+ *          type of the second event parameter
  */
 public class Event2<T1, T2> implements IEvent2<T1, T2> {
 	private HashSet<IListener2<T1, T2>> listeners = new HashSet<IListener2<T1, T2>>();
@@ -16,8 +16,8 @@ public class Event2<T1, T2> implements IEvent2<T1, T2> {
 	@Override
 	public Connection add(final IListener2<T1, T2> listener) {
 		listeners.add(listener);
-	    return new Connection() {
-			
+		return new Connection() {
+
 			@Override
 			public void remove() {
 				Event2.this.remove(listener);
@@ -34,11 +34,11 @@ public class Event2<T1, T2> implements IEvent2<T1, T2> {
 	 * Generate a single event
 	 * 
 	 * @param value1
-	 *            the first event parameter
+	 *          the first event parameter
 	 * @param value2
-	 *            the second event parameter
+	 *          the second event parameter
 	 */
-  public void emit(T1 value1, T2 value2) {
+	public void emit(T1 value1, T2 value2) {
 		for (IListener2<T1, T2> listener : listeners) {
 			listener.handle(value1, value2);
 		}
diff --git a/src/jrummikub/util/IEvent.java b/src/jrummikub/util/IEvent.java
index 52893f2..b8d418c 100644
--- a/src/jrummikub/util/IEvent.java
+++ b/src/jrummikub/util/IEvent.java
@@ -7,6 +7,7 @@ public interface IEvent {
 	 * 
 	 * @param listener
 	 *            target listener
+	 * @return a connection to remove the listener
 	 */
 	public Connection add(IListener listener);
 
diff --git a/src/jrummikub/util/IEvent1.java b/src/jrummikub/util/IEvent1.java
index fa031b8..9508d05 100644
--- a/src/jrummikub/util/IEvent1.java
+++ b/src/jrummikub/util/IEvent1.java
@@ -12,6 +12,7 @@ public interface IEvent1<T> {
 	 * 
 	 * @param listener
 	 *            target listener
+	 * @return a connection to remove the listener
 	 */
 	public Connection add(IListener1<T> listener);
 
diff --git a/src/jrummikub/util/IEvent2.java b/src/jrummikub/util/IEvent2.java
index 70bb3e6..8958cfa 100644
--- a/src/jrummikub/util/IEvent2.java
+++ b/src/jrummikub/util/IEvent2.java
@@ -4,16 +4,17 @@ package jrummikub.util;
  * Interface for classes that can generate events having a two parameters
  * 
  * @param <T1>
- *            type of the first event parameter
+ *          type of the first event parameter
  * @param <T2>
- *            type of the second event parameter
+ *          type of the second event parameter
  */
 public interface IEvent2<T1, T2> {
 	/**
 	 * Start to publish all events to a given listener
 	 * 
 	 * @param listener
-	 *            target listener
+	 *          target listener
+	 * @return a connection to remove the listener
 	 */
 	public Connection add(IListener2<T1, T2> listener);
 
@@ -21,7 +22,7 @@ public interface IEvent2<T1, T2> {
 	 * Stop publishing events to a given listener
 	 * 
 	 * @param listener
-	 *            target listener
+	 *          target listener
 	 */
 	public void remove(IListener2<T1, T2> listener);
 }