better modellistener method

java/7-mvc/hellomvc3b/Main.java

@@ -21,13 +21,9 @@ public class Main {
 		
 		// create View, tell it about model
 		View view = new View(model);
-		// tell Model about View's listener inner class
-		model.addView(view.modelListener);
-		
+	
 		// create second view ...
 		View2 view2 = new View2(model);
-		// tell Model about View's listener inner class
-		model.addView(view2.modelListener);
 		
 		// create a layout panel to hold the two views
 		JPanel p = new JPanel(new GridLayout(2,1));

java/7-mvc/hellomvc3b/View.java

@@ -17,8 +17,6 @@ class View extends JPanel  {
 	// the model that this view is showing
 	private Model model;
 
-	// model listener
-	public IView modelListener;
 
 	public View(Model model) {
 		
@@ -35,12 +33,13 @@ class View extends JPanel  {
 		this.model = model;
 
 		// anonymous class acts as model listener
-		modelListener = new IView() {
+		this.model.addView(new IView() {
 			public void updateView() {
 				System.out.println("View: updateView");
 				button.setText(Integer.toString(model.getCounterValue()));
 			}
-		};
+		});
+
 
 		// setup the event to go to the "controller"
 		// (this anonymous class is essentially the controller)

java/7-mvc/hellomvc3b/View2.java

@@ -14,9 +14,6 @@ class View2 extends JPanel {
 	private Model model;
 	private JLabel label = new JLabel();
 
-	// model listener
-	public IView modelListener;	
-
 	View2(Model model) {
 		// create UI
 		setBackground(Color.WHITE);
@@ -26,16 +23,16 @@ class View2 extends JPanel {
 		this.model = model;
 
 		// anonymous class acts as model listener
-		modelListener = new IView() {
+		this.model.addView(new IView() {
 			public void updateView() {
-			System.out.println("View2: updateView");
-			// just displays an 'X' for each counter value
-			String s = "";
-			for (int i=0; i< model.getCounterValue(); i++) s = s + "X";
-			label.setText(s);
+				System.out.println("View2: updateView");
+				// just displays an 'X' for each counter value
+				String s = "";
+				for (int i=0; i< model.getCounterValue(); i++) s = s + "X";
+				label.setText(s);
 			}
-		};		
-		
+		});		
+			
 		// setup the event to go to the "controller"
 		// (this anonymous class is essentially the controller)		
 		addMouseListener(new MouseAdapter() {

java/7-mvc/triangle/model/TriangleModel.java

@@ -5,7 +5,7 @@ import java.util.ArrayList;
 import javax.swing.undo.AbstractUndoableEdit;
 import javax.swing.undo.UndoableEdit;
 
-public class TriangleModel extends Object {
+public class TriangleModel {
 	/* A list of the model's views. */
 	private ArrayList<IView> views = new ArrayList<IView>();