package OO14route66;

import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;

/**
 * Keyboard handler of views for controller.
 * Pressing keys changes the controller.
 * @author pieterkoopman
 */
public class KeyHandler extends KeyAdapter {
    
    private Controller controller;
    
    public KeyHandler (Controller c) {
        controller = c;
    }

    /**
     * on key down 'q' stop program
     * on key down 's' stop the cars
     * on key down ' ' all cars one step
     * on key down '<' decrease delay
     * on key down '>' increase delay
     * on any other key activate the cars
     * @param e the key event
     */
    @Override
    public void keyPressed(KeyEvent e) {
        switch (e.getKeyChar()) {
            case 'q': System.exit(0);
            case 's': controller.stopCars(); break;
            case ' ': controller.stepAllCars(); break;
            case '<': controller.setDelay(controller.getDelay() - 50); break;
            case '>': controller.setDelay(controller.getDelay() + 50); break;
            default : controller.resumeCars();
        }
    }
}