import objectdraw.*;

// a demonstration of counting up from zero
// and showing the value in the window and the terminal
public class Counter extends FrameWindowController {
    
    private static final Location TEXT_LOC = new Location(20, 30);
    
    private int counter = 0;
    
    private Text counterDisplay;
    
    public void begin() {
        // create the initial display in the program window
        counterDisplay = new Text("Counter value is " + counter + "!", TEXT_LOC, canvas);
    }

    public void onMousePress(Location point) {

        // equivalent to counter = counter + 1
        counter++; 

        // update the displayed text in the program window
        counterDisplay.setText("Counter value is " + counter + "!");
        
        // print the counter value in the terminal window
        System.out.println("Counter value (terminal) is " + counter);
        // print a blank line
        System.out.println(); 
        
    }
    
}