From 73509f2dd13f16adc927b250f8380f83d003150d Mon Sep 17 00:00:00 2001
From: kske <kai@kske.dev>
Date: Sat, 24 Aug 2019 16:04:09 +0200
Subject: [PATCH] Associated DropTarget with MainWindow

When a FEN file is dropped into the main window, the drop target
automatically loads it into the currently visible (=selected) game.
---
 src/dev/kske/chess/ui/FENDropTarget.java | 21 ++++++++++-----------
 src/dev/kske/chess/ui/GamePane.java      | 11 +----------
 src/dev/kske/chess/ui/MainWindow.java    |  5 ++---
 3 files changed, 13 insertions(+), 24 deletions(-)

diff --git a/src/dev/kske/chess/ui/FENDropTarget.java b/src/dev/kske/chess/ui/FENDropTarget.java
index ccb6526..dfbd39a 100644
--- a/src/dev/kske/chess/ui/FENDropTarget.java
+++ b/src/dev/kske/chess/ui/FENDropTarget.java
@@ -19,27 +19,26 @@ import java.util.List;
  */
 public class FENDropTarget extends DropTargetAdapter {
 
-	private GamePane gamePane;
+	private MainWindow mainWindow;
 
-	public FENDropTarget(GamePane gamePane) {
-		this.gamePane = gamePane;
+	public FENDropTarget(MainWindow mainWindow) {
+		this.mainWindow = mainWindow;
 	}
 
 	@Override
 	public void drop(DropTargetDropEvent evt) {
 		try {
 			evt.acceptDrop(DnDConstants.ACTION_COPY_OR_MOVE);
-			@SuppressWarnings(
-				"unchecked"
-			)
+			@SuppressWarnings("unchecked")
 			List<File> droppedFiles = (List<File>) evt.getTransferable().getTransferData(DataFlavor.javaFileListFlavor);
 			try (BufferedReader br = new BufferedReader(new FileReader(droppedFiles.get(0)))) {
-				gamePane.getGame().reset();
-				gamePane.getGame().getBoard().initFromFEN(br.readLine());
-				gamePane.getBoardPane().getBoardComponent().repaint();
-				gamePane.getGame()
+				mainWindow.getSelectedGamePane().getGame().reset();
+				mainWindow.getSelectedGamePane().getGame().getBoard().initFromFEN(br.readLine());
+				mainWindow.getSelectedGamePane().getBoardPane().getBoardComponent().repaint();
+				mainWindow.getSelectedGamePane()
+					.getGame()
 					.getPlayers()
-					.get(gamePane.getGame().getBoard().getLog().getActiveColor())
+					.get(mainWindow.getSelectedGamePane().getGame().getBoard().getLog().getActiveColor())
 					.requestMove();
 				evt.dropComplete(true);
 			}
diff --git a/src/dev/kske/chess/ui/GamePane.java b/src/dev/kske/chess/ui/GamePane.java
index 7dc2bcc..2e83c07 100644
--- a/src/dev/kske/chess/ui/GamePane.java
+++ b/src/dev/kske/chess/ui/GamePane.java
@@ -2,7 +2,6 @@ package dev.kske.chess.ui;
 
 import java.awt.BorderLayout;
 import java.awt.GridLayout;
-import java.awt.dnd.DropTarget;
 
 import javax.swing.JButton;
 import javax.swing.JComponent;
@@ -28,9 +27,6 @@ public class GamePane extends JComponent {
 	private Game		game;
 	private Color		activeColor;
 
-	@SuppressWarnings(
-		"unused"
-	)
 	public GamePane() {
 		setLayout(new BorderLayout());
 		boardPane = new BoardPane();
@@ -38,10 +34,7 @@ public class GamePane extends JComponent {
 
 		JPanel toolPanel = new JPanel();
 		btnRestart = new JButton("Restart");
-		btnRestart.addActionListener((evt) -> {
-			if (game != null) game.reset();
-			game.start();
-		});
+		btnRestart.addActionListener((evt) -> { if (game != null) game.reset(); game.start(); });
 
 		activeColor		= Color.WHITE;
 		btnSwapColors	= new JButton("Play as black");
@@ -67,8 +60,6 @@ public class GamePane extends JComponent {
 		for (int i = 0; i < 8; i++)
 			numberPanel.add(new JLabel(String.valueOf(8 - i)));
 		add(numberPanel, BorderLayout.EAST);
-
-		new DropTarget(this, new FENDropTarget(this));
 	}
 
 	public BoardPane getBoardPane() { return boardPane; }
diff --git a/src/dev/kske/chess/ui/MainWindow.java b/src/dev/kske/chess/ui/MainWindow.java
index bd5b2b4..d95ae8a 100644
--- a/src/dev/kske/chess/ui/MainWindow.java
+++ b/src/dev/kske/chess/ui/MainWindow.java
@@ -2,6 +2,7 @@ package dev.kske.chess.ui;
 
 import java.awt.EventQueue;
 import java.awt.Toolkit;
+import java.awt.dnd.DropTarget;
 
 import javax.swing.JFrame;
 import javax.swing.JTabbedPane;
@@ -20,9 +21,6 @@ public class MainWindow {
 	/**
 	 * Launch the application.
 	 */
-	@SuppressWarnings(
-		"unused"
-	)
 	public static void main(String[] args) {
 		EventQueue.invokeLater(() -> {
 			try {
@@ -57,6 +55,7 @@ public class MainWindow {
 		frame.getContentPane().add(tabbedPane);
 
 		frame.setJMenuBar(new MenuBar(this));
+		new DropTarget(frame, new FENDropTarget(this));
 
 		// Update position and dimensions
 		frame.pack();