add Dev Part

DEV/DEV3.1/TP02/Exercise1/Part1/ClickSwapImageEvent.java

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+import java.awt.event.MouseAdapter;
+import java.awt.event.MouseEvent;
+
+public class ClickSwapImageEvent extends MouseAdapter {
+
+    private ImageWindow window;
+    
+    public ClickSwapImageEvent(ImageWindow window) {
+        this.window = window;
+    }
+
+    public void mouseClicked(MouseEvent event) {
+        if(event.getX() > this.window.getWidth() / 2) {
+            this.window.nextImage();
+            return; 
+        }
+
+        this.window.lastImage();
+    }
+}

DEV/DEV3.1/TP02/Exercise1/Part1/ImageWindow.java

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+import java.io.File;
+
+import javax.swing.ImageIcon;
+import javax.swing.JFrame;
+import javax.swing.JLabel;
+
+public class ImageWindow extends JFrame {
+
+    private ImageIcon[] images; 
+    private int cursor;
+
+    private JLabel label; 
+    
+    public ImageWindow() {
+        this.setSize(1024, 1024);
+        this.setLocationRelativeTo(null);
+        this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+
+        File resourcesDirectory = new File("../resources/");
+
+        if(resourcesDirectory.exists() && resourcesDirectory.isDirectory()) {
+            File[] files = resourcesDirectory.listFiles();
+
+            if(files != null) {
+                this.images = new ImageIcon[files.length];
+                this.cursor = 0;
+
+                for(File file : files) {
+                    this.images[this.cursor] = new ImageIcon(file.getPath());
+                    this.cursor++;
+                }
+            }
+        }
+
+        this.addMouseListener(new ClickSwapImageEvent(this));
+
+        this.cursor = 0;
+
+        this.nextImage();
+    }
+
+    public void nextImage() {
+        if(this.images.length == 0) return;
+
+        if(this.label != null) {
+            this.remove(this.label);
+        }
+
+        this.label = new JLabel(this.images[cursor]);
+        this.label.setVerticalAlignment(JLabel.CENTER);
+        this.label.setHorizontalAlignment(JLabel.CENTER);
+
+        if(this.cursor + 1 >= this.images.length) {
+            this.cursor = 0;
+        } else {
+            this.cursor++;
+        }
+
+        System.out.println(this.cursor);
+
+        this.add(label);
+        this.revalidate();
+    }
+
+    public void lastImage() {
+        if(this.images.length == 0) return;
+
+        if(this.label != null) {
+            this.remove(this.label);
+        }
+
+        this.label = new JLabel(this.images[cursor]);
+        this.label.setVerticalAlignment(JLabel.CENTER);
+        this.label.setHorizontalAlignment(JLabel.CENTER);
+
+        if(this.cursor - 1 < 0) {
+            this.cursor = this.images.length - 1;
+        } else {
+            this.cursor--;
+        }
+
+        System.out.println(this.cursor);
+
+        this.add(label);
+        this.revalidate();
+    }
+}

DEV/DEV3.1/TP02/Exercise1/Part1/Main.java

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+public class Main {
+    
+    public static void main(String[] args) {
+        ImageWindow window = new ImageWindow();
+        window.setVisible(true);
+    }
+}