man kann speichern und laden, nur nicht während eines laufenden spiels laden

git-svn-id: svn://sunsvr01.isp.uni-luebeck.de/swproj13/trunk@386 72836036-5685-4462-b002-a69064685172

src/jrummikub/util/Event3.java

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+package jrummikub.util;
+
+import java.util.HashSet;
+
+/**
+ * Simple single parameter event generator
+ * 
+ * @param <T1>
+ *            type of the first event parameter
+ * @param <T2>
+ *            type of the second event parameter
+ */
+public class Event3<T1, T2, T3> implements IEvent3<T1, T2, T3> {
+	private HashSet<IListener3<T1, T2, T3>> listeners = new HashSet<IListener3<T1, T2, T3>>();
+
+	@Override
+	public Connection add(final IListener3<T1, T2, T3> listener) {
+		listeners.add(listener);
+		return new Connection() {
+
+			@Override
+			public void remove() {
+				Event3.this.remove(listener);
+			}
+		};
+	}
+
+	@Override
+	public void remove(IListener3<T1, T2, T3> listener) {
+		listeners.remove(listener);
+	}
+
+	/**
+	 * Generate a single event
+	 * 
+	 * @param value1
+	 *            the first event parameter
+	 * @param value2
+	 *            the second event parameter
+	 */
+	public void emit(T1 value1, T2 value2, T3 value3) {
+		for (IListener3<T1, T2, T3> listener : listeners) {
+			listener.handle(value1, value2, value3);
+		}
+	}
+}

src/jrummikub/util/IEvent3.java

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+package jrummikub.util;
+
+/**
+ * Interface for classes that can generate events having a two parameters
+ * 
+ * @param <T1>
+ *            type of the first event parameter
+ * @param <T2>
+ *            type of the second event parameter
+ */
+public interface IEvent3<T1, T2, T3> {
+	/**
+	 * Start to publish all events to a given listener
+	 * 
+	 * @param listener
+	 *            target listener
+	 * @return a connection to remove the listener
+	 */
+	public Connection add(IListener3<T1, T2, T3> listener);
+
+	/**
+	 * Stop publishing events to a given listener
+	 * 
+	 * @param listener
+	 *            target listener
+	 */
+	public void remove(IListener3<T1, T2, T3> listener);
+}

src/jrummikub/util/IListener3.java

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+package jrummikub.util;
+
+/**
+ * Interface for classes that can receive parameterless events having a two
+ * parameters
+ * 
+ * @param <T1>
+ *            type of the first event parameter
+ * @param <T2>
+ *            type of the first event parameter
+ */
+public interface IListener3<T1, T2, T3> {
+	/**
+	 * This method is called whenever a class we're listening to emits an event
+	 * 
+	 * @param value1
+	 *            the first event parameter
+	 * @param value2
+	 *            the second event parameter
+	 */
+	public void handle(T1 value1, T2 value2, T3 value3);
+}