Implement copy action

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

@@ -15,10 +15,10 @@ import java.util.Optional;
 public class Controller {
     private final static Logger logger = LoggerFactory.getLogger(Controller.class);
     private final ShapesView view;
-    private final Shape model;
+    private final SCollection model;
     private Selection selection;
 
-    Controller(ShapesView view, Shape model) {
+    Controller(ShapesView view, SCollection model) {
         this.view = view;
         this.model = model;
 
@@ -53,8 +53,7 @@ public class Controller {
     }
 
     private void handleMousePressed(MouseEvent evt) {
-        var sc = (SCollection) this.model;
-        getTarget(evt, sc)
+        getTarget(evt, this.model)
                 .ifPresentOrElse(
                         s -> {
                             if (selection != null) resetSelection();
@@ -73,18 +72,29 @@ public class Controller {
             case KeyEvent.VK_DELETE:
                 deleteSelected();
                 break;
+            case KeyEvent.VK_C:
+                copySelection();
+                break;
             default:
                 logger.warn("Pressed unhandled key: {}", evt.getKeyChar());
                 break;
         }
     }
 
+    private void copySelection() {
+        if (selection == null) {
+            logger.debug("No selection to copy");
+            return;
+        }
+        this.model.add(selection.shape.clone());
+        view.repaint();
+    }
+
     private void deleteSelected() {
         if (selection == null) return;
         logger.debug("Deleting selected shape(s)");
-        var sc = (SCollection) this.model;
-        sc.remove(selection.shape);
-        selection = null;
+        this.model.remove(selection.shape);
+        resetSelection();
         view.repaint();
     }