Add delete shape operation

src/main/java/ovh/gasser/newshapes/ui/Controller.java

@@ -6,12 +6,14 @@ import ovh.gasser.newshapes.Selection;
 import ovh.gasser.newshapes.shapes.SCollection;
 import ovh.gasser.newshapes.shapes.Shape;
 
+import java.awt.event.KeyAdapter;
+import java.awt.event.KeyEvent;
 import java.awt.event.MouseAdapter;
 import java.awt.event.MouseEvent;
 import java.util.Optional;
 
 public class Controller {
-    private final static Logger logger = LoggerFactory.getLogger(ShapesView.class);
+    private final static Logger logger = LoggerFactory.getLogger(Controller.class);
     private final ShapesView view;
     private final Shape model;
     private Selection selection;
@@ -19,6 +21,7 @@ public class Controller {
     Controller(ShapesView view, Shape model) {
         this.view = view;
         this.model = model;
+
         var adapter = new MouseAdapter() {
             @Override
             public void mousePressed(MouseEvent evt) {
@@ -32,6 +35,16 @@ public class Controller {
         };
         this.view.addMouseMotionListener(adapter);
         this.view.addMouseListener(adapter);
+
+        this.view.setFocusable(true);
+        boolean res = this.view.requestFocusInWindow();
+        assert res;
+        this.view.addKeyListener(new KeyAdapter() {
+            @Override
+            public void keyPressed(KeyEvent e) {
+                handleKeyPressed(e);
+            }
+        });
     }
 
     private void handleMouseDragged(MouseEvent evt) {
@@ -55,6 +68,26 @@ public class Controller {
         view.repaint();
     }
 
+    private void handleKeyPressed(KeyEvent evt) {
+        switch (evt.getKeyCode()) {
+            case KeyEvent.VK_DELETE:
+                deleteSelected();
+                break;
+            default:
+                logger.warn("Pressed unhandled key: {}", evt.getKeyChar());
+                break;
+        }
+    }
+
+    private void deleteSelected() {
+        if (selection == null) return;
+        logger.debug("Deleting selected shape(s)");
+        var sc = (SCollection) this.model;
+        sc.remove(selection.shape);
+        selection = null;
+        view.repaint();
+    }
+
     private void resetSelection() {
         logger.debug("Un-selecting {}", selection.shape);
         selection.unselect();