Replace old event framework with dev.kske:event-bus:0.0.3

pom.xml

@@ -44,7 +44,19 @@
 		<maven.compiler.target>11</maven.compiler.target>
 	</properties>
 
+	<repositories>
+		<repository>
+			<id>kske-repo</id>
+			<url>https://kske.dev/maven-repo</url>
+		</repository>
+	</repositories>
+
 	<dependencies>
+		<dependency>
+			<groupId>dev.kske</groupId>
+			<artifactId>event-bus</artifactId>
+			<version>0.0.3</version>
+		</dependency>
 		<dependency>
 			<groupId>org.junit.jupiter</groupId>
 			<artifactId>junit-jupiter-api</artifactId>

src/main/java/dev/kske/chess/board/Board.java

@@ -3,8 +3,8 @@ package dev.kske.chess.board;
 import java.util.*;
 
 import dev.kske.chess.board.Piece.Color;
-import dev.kske.chess.event.EventBus;
 import dev.kske.chess.event.MoveEvent;
+import dev.kske.eventbus.EventBus;
 
 /**
  * Project: <strong>Chess</strong><br>

src/main/java/dev/kske/chess/event/Event.java

@@ -1,18 +0,0 @@
-package dev.kske.chess.event;
-
-/**
- * Project: <strong>Chess</strong><br>
- * File: <strong>Event.java</strong><br>
- * Created: <strong>7 Aug 2019</strong><br>
- *
- * @since Chess v0.4-alpha
- * @author Kai S. K. Engelbart
- * @param <T> the type of the event's value
- */
-public interface Event<T> {
-
-	/**
-	 * @return The data associated with the event
-	 */
-	T getData();
-}

src/main/java/dev/kske/chess/event/EventBus.java

@@ -1,59 +0,0 @@
-package dev.kske.chess.event;
-
-import java.util.ArrayList;
-import java.util.List;
-
-/**
- * Dispatches {@link Event}s to various {@link Subscriber}s.<br>
- * <br>
- * Project: <strong>Chess</strong><br>
- * File: <strong>EventBus.java</strong><br>
- * Created: <strong>7 Aug 2019</strong><br>
- *
- * @since Chess v0.4-alpha
- * @author Kai S. K. Engelbart
- */
-public class EventBus {
-
-	private List<Subscriber> subscribers;
-
-	private static EventBus instance;
-
-	/**
-	 * @return a singleton instance of {@link EventBus}
-	 */
-	public static EventBus getInstance() {
-		if (instance == null)
-			instance = new EventBus();
-		return instance;
-	}
-
-	private EventBus() {
-		subscribers = new ArrayList<>();
-	}
-
-	/**
-	 * Registers a subscriber to which future events will be dispatched.
-	 *
-	 * @param subscribable the subscriber to register
-	 */
-	public void register(Subscriber subscribable) {
-		subscribers.add(subscribable);
-	}
-
-	/**
-	 * Dispatches an event to all {@Subscriber}s registered at this event bus.
-	 *
-	 * @param event the event to dispatch
-	 */
-	public void dispatch(Event<?> event) {
-		subscribers.stream()
-			.filter(e -> e.supports().contains(event.getClass()))
-			.forEach(e -> e.handle(event));
-	}
-
-	/**
-	 * @return a list of all registered subscribers
-	 */
-	public List<Subscriber> getSubscribers() { return subscribers; }
-}

src/main/java/dev/kske/chess/event/GameStartEvent.java

@@ -1,6 +1,7 @@
 package dev.kske.chess.event;
 
 import dev.kske.chess.game.Game;
+import dev.kske.eventbus.IEvent;
 
 /**
  * Project: <strong>Chess</strong><br>
@@ -10,7 +11,7 @@ import dev.kske.chess.game.Game;
  * @since Chess v0.5-alpha
  * @author Kai S. K. Engelbart
  */
-public class GameStartEvent implements Event<Game> {
+public class GameStartEvent implements IEvent {
 
 	private final Game game;
 
@@ -23,6 +24,8 @@ public class GameStartEvent implements Event<Game> {
 		game = source;
 	}
 
-	@Override
+	/**
-	public Game getData() { return game; }
+	 * @return the started game
+	 */
+	public Game getGame() { return game; }
 }

src/main/java/dev/kske/chess/event/MoveEvent.java

@@ -1,7 +1,7 @@
 package dev.kske.chess.event;
 
-import dev.kske.chess.board.BoardState;
+import dev.kske.chess.board.*;
-import dev.kske.chess.board.Move;
+import dev.kske.eventbus.IEvent;
 
 /**
  * Project: <strong>Chess</strong><br>
@@ -11,7 +11,7 @@ import dev.kske.chess.board.Move;
  * @since Chess v0.4-alpha
  * @author Kai S. K. Engelbart
  */
-public class MoveEvent implements Event<Move> {
+public class MoveEvent implements IEvent {
 
 	private final Move move;
 	private final BoardState boardState;
@@ -27,8 +27,10 @@ public class MoveEvent implements Event<Move> {
 		this.boardState = boardState;
 	}
 
-	@Override
+	/**
-	public Move getData() { return move; }
+	 * @return the move
+	 */
+	public Move getMove() { return move; }
 
 	/**
 	 * @return the state of the board after the move

src/main/java/dev/kske/chess/event/Subscriber.java

@@ -1,31 +0,0 @@
-package dev.kske.chess.event;
-
-import java.util.Set;
-
-/**
- * Implementations of this interface can register themselves at the
- * {@link EventBus} and will be triggered every time an {@link Event} of a
- * supported type.<br>
- * <br>
- * Project: <strong>Chess</strong><br>
- * File: <strong>Subscribable.java</strong><br>
- * Created: <strong>7 Aug 2019</strong><br>
- *
- * @since Chess v0.4-alpha
- * @author Kai S. K. Engelbart
- */
-public interface Subscriber {
-
-	/**
-	 * Consumes an event dispatched by an event bus.
-	 *
-	 * @param event The event dispatched by the event bus, only of supported
-	 *              type
-	 */
-	void handle(Event<?> event);
-
-	/**
-	 * @return A set of classes this class is supposed to handle in events
-	 */
-	Set<Class<?>> supports();
-}

src/main/java/dev/kske/chess/game/Game.java

@@ -1,23 +1,17 @@
 package dev.kske.chess.game;
 
-import java.util.EnumMap;
+import java.util.*;
-import java.util.Map;
 
 import javax.swing.JOptionPane;
 
-import dev.kske.chess.board.Board;
+import dev.kske.chess.board.*;
-import dev.kske.chess.board.BoardState;
-import dev.kske.chess.board.Move;
 import dev.kske.chess.board.Piece.Color;
-import dev.kske.chess.event.EventBus;
+import dev.kske.chess.event.*;
-import dev.kske.chess.event.GameStartEvent;
-import dev.kske.chess.event.MoveEvent;
 import dev.kske.chess.game.ai.AIPlayer;
 import dev.kske.chess.io.EngineUtil;
 import dev.kske.chess.io.EngineUtil.EngineInfo;
-import dev.kske.chess.ui.BoardComponent;
+import dev.kske.chess.ui.*;
-import dev.kske.chess.ui.BoardPane;
+import dev.kske.eventbus.EventBus;
-import dev.kske.chess.ui.OverlayComponent;
 
 /**
  * Project: <strong>Chess</strong><br>

src/main/java/dev/kske/chess/ui/GamePane.java

@@ -1,20 +1,15 @@
 package dev.kske.chess.ui;
 
-import java.awt.GridBagConstraints;
+import java.awt.*;
-import java.awt.GridBagLayout;
-import java.awt.GridLayout;
-import java.util.Arrays;
-import java.util.HashSet;
-import java.util.Set;
 
 import javax.swing.*;
 
-import dev.kske.chess.board.BoardState;
+import dev.kske.chess.board.*;
-import dev.kske.chess.board.MoveNode;
 import dev.kske.chess.board.Piece.Color;
 import dev.kske.chess.event.*;
-import dev.kske.chess.game.Game;
+import dev.kske.chess.game.*;
-import dev.kske.chess.game.NaturalPlayer;
+import dev.kske.eventbus.*;
+import dev.kske.eventbus.Event;
 
 /**
  * The part of this application's {@link MainWindow} that displays {@link Game}s
@@ -27,7 +22,7 @@ import dev.kske.chess.game.NaturalPlayer;
  * @since Chess v0.4-alpha
  * @author Kai S. K. Engelbart
  */
-public class GamePane extends JComponent {
+public class GamePane extends JComponent implements EventListener {
 
 	private static final long serialVersionUID = 4349772338239617477L;
 
@@ -37,6 +32,7 @@ public class GamePane extends JComponent {
 	private Color activeColor;
 	private JPanel moveSelectionPanel;
 	private JButton btnFirst, btnPrevious, btnNext, btnLast;
+	private JList<MoveNode> pgnList;
 
 	/**
 	 * Creates an instance of {@link GamePane}.
@@ -170,7 +166,7 @@ public class GamePane extends JComponent {
 		gbc_scrollPane.gridy = 1;
 		add(scrollPane, gbc_scrollPane);
 
-		JList<MoveNode> pgnList = new JList<>();
+		pgnList = new JList<>();
 		pgnList.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
 		pgnList.setLayoutOrientation(JList.HORIZONTAL_WRAP);
 		pgnList.setVisibleRowCount(0);
@@ -180,23 +176,27 @@ public class GamePane extends JComponent {
 		// Listen to moves and game (re-)starts and update the move list or
 		// disable the
 		// color switching buttons if necessary
-		EventBus.getInstance().register(new Subscriber() {
+		EventBus.getInstance().registerListener(this);
+	}
 
-			@Override
+	@Event
-			public void handle(Event<?> event) {
+	public void onMove(MoveEvent evt) {
-				if (
+		btnSwapColors.setEnabled(
-					event instanceof MoveEvent && (((MoveEvent) event)
+			evt.getBoardState() != BoardState.CHECKMATE
-						.getBoardState() == BoardState.CHECKMATE
+				&& evt.getBoardState() != BoardState.STALEMATE
-						|| ((MoveEvent) event)
+		);
-							.getBoardState() == BoardState.STALEMATE)
+		updateLog();
-				)
+	}
-					btnSwapColors.setEnabled(false);
+
-				else
+	@Event
-					if (event instanceof GameStartEvent)
+	public void onGameStart(GameStartEvent evt) {
 		btnSwapColors.setEnabled(
 			game.getPlayers().get(Color.WHITE) instanceof NaturalPlayer ^ game.getPlayers().get(Color.BLACK) instanceof NaturalPlayer
 		);
+		updateLog();
+	}
 
+	private void updateLog() {
 		if (game.getBoard().getLog() == null)
 			return;
 
@@ -205,15 +205,6 @@ public class GamePane extends JComponent {
 		pgnList.setModel(model);
 	}
 
-			@Override
-			public Set<Class<?>> supports() {
-				return new HashSet<>(
-					Arrays.asList(MoveEvent.class, GameStartEvent.class)
-				);
-			}
-		});
-	}
-
 	/**
 	 * @return The {@link BoardPane} instance associated with this game pane
 	 */