ButtonsFactory.java

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package io.neocdtv.simpleplayer.ui;

import io.neocdtv.simpleplayer.worker.NextWorker;
import io.neocdtv.simpleplayer.worker.PauseWorker;
import io.neocdtv.simpleplayer.worker.PlayWorker;
import io.neocdtv.simpleplayer.worker.VolumeDownWorker;
import io.neocdtv.simpleplayer.worker.VolumeUpWorker;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.JButton;

/**
 *
 * @author xix
 */
public class ButtonsFactory {
    private final static Logger LOGGER = Logger.getLogger(PlaylistUI.class.getName());

    private static JButton PLAY_BUTTON;
    private static JButton PAUSE_BUTTON;
    private static JButton NEXT_BUTTON;
    private static JButton VOLUME_DOWN_BUTTON;
    private static JButton VOLUME_UP_BUTTON;
    
    private ButtonsFactory() {
    }
    
    public static JButton playButtonIntance() {
        if (PLAY_BUTTON == null) {
            PLAY_BUTTON = new JButton("play");
            PLAY_BUTTON.addActionListener(new ActionListener() {
                @Override
                public void actionPerformed(ActionEvent actionEvent) {
                    LOGGER.log(Level.INFO, "actionPerfomed on playButton");
                    new PlayWorker().execute();
                }
            });
        }
        return PLAY_BUTTON;
    }
    
    public static JButton pauseButtonInstance() {
        if (PAUSE_BUTTON == null) {
            PAUSE_BUTTON = new JButton("pause");
            PAUSE_BUTTON.addActionListener(new ActionListener() {
                @Override
                public void actionPerformed(ActionEvent actionEvent) {
                    LOGGER.log(Level.INFO, "actionPerfomed on pauseButton");
                    new PauseWorker().execute();
                }
            });
        }
        return PAUSE_BUTTON;
    }

    public static JButton nextButtonInstance() {
        if (NEXT_BUTTON == null) {
            NEXT_BUTTON = new JButton("next");
            NEXT_BUTTON.addActionListener(new ActionListener() {
                @Override
                public void actionPerformed(ActionEvent actionEvent) {
                    LOGGER.log(Level.INFO, "actionPerfomed on nextButton");
                    new NextWorker().execute();
                }
            });
        }
        return NEXT_BUTTON;
    }
    
    public static JButton volumeDownButtonInstance() {
        if (VOLUME_DOWN_BUTTON == null) {
            VOLUME_DOWN_BUTTON = new JButton("-");
            VOLUME_DOWN_BUTTON.addActionListener(new ActionListener() {
                @Override
                public void actionPerformed(ActionEvent actionEvent) {
                    LOGGER.log(Level.INFO, "actionPerfomed on volumeDownButton");
                    new VolumeDownWorker().execute();
                }
            });
        }
        return VOLUME_DOWN_BUTTON;
    }
    
    public static JButton volumeUpButtonInstance() {
        if (VOLUME_UP_BUTTON == null) {
            VOLUME_UP_BUTTON = new JButton("+");
            VOLUME_UP_BUTTON.addActionListener(new ActionListener() {
                @Override
                public void actionPerformed(ActionEvent actionEvent) {
                    LOGGER.log(Level.INFO, "actionPerfomed on volumeUpButton");
                    new VolumeUpWorker().execute();
                }
            });
        }
        return VOLUME_UP_BUTTON;
    }
    
    public static void enableButtons(final boolean enabled) {
        final String actionName = enabled ? "enabling" : "disabling";
        LOGGER.log(Level.INFO, "{0} buttons...", actionName);
        PLAY_BUTTON.setEnabled(enabled);
        PAUSE_BUTTON.setEnabled(enabled);
        NEXT_BUTTON.setEnabled(enabled);
    }
}