NextWaveScreen.java

package vooga.towerdefense.view.gamescreens;

import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;

import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JPanel;

import vooga.towerdefense.controller.Controller;


/**
 * Next Wave Screen holds the button to start the next wave.
 * 
 * @author Angelica Schwartz
 */
public class NextWaveScreen extends JPanel {

    /**
     * default serialized id.
     */
    private static final long serialVersionUID = 1L;
    /**
     * string to display on the button.
     */
    public static final String WAVE_SCREEN_BUTTON_KEYWORD = "NextWaveButtonName";
    /**
     * constant for the wave timer. 
     */
    private static final String NEXT_WAVE_TEXT = "Time Until Next Wave: ";
    /**
     * controller associated with this screen.
     */
    private Controller myController;
    /**
     * jLabel to display the time until the next wave.
     */
    private JLabel myNextWaveTimerDisplay;
    /**
     * button to start the next wave.
     */
    private JButton nextWaveButton;
    /**
     * mouse listener for the button.
     */
    private MouseAdapter myMouseAdapter;

    /**
     * Constructor.
     * 
     * @param size
     * @param controller
     */
    public NextWaveScreen (Dimension size, Controller controller) {
        setPreferredSize(size);
        setLayout(new BorderLayout());
        myController = controller;
        nextWaveButton =
                new JButton(myController.getStringFromResources(WAVE_SCREEN_BUTTON_KEYWORD));
        add(nextWaveButton, BorderLayout.NORTH);
        myNextWaveTimerDisplay = new JLabel(NEXT_WAVE_TEXT);
        add(myNextWaveTimerDisplay, BorderLayout.CENTER);
        makeMouseAdapter();
        nextWaveButton.addMouseListener(myMouseAdapter);
        setVisible(true);
    }
    
    /**
     * updates the timer display with the time left.
     * @param timeLeft
     */
    public void updateTimerDisplay(String timeLeft) {
        myNextWaveTimerDisplay.setText(NEXT_WAVE_TEXT + timeLeft);
    }

    /**
     * helper method to create the mouse adapter.
     */
    private void makeMouseAdapter () {
        myMouseAdapter = new MouseAdapter() {
            @Override
            public void mouseClicked (MouseEvent e) {
                if (e.getSource().equals(nextWaveButton)) {
                    myController.startNextLevel();
                }
            }
        };
    }
}