C:/Projekte/I2BPro/src/i2bpro/layer/Panels/ButtonPanel.java

package i2bpro.layer.Panels;

import i2bpro.Exceptions.LayerException;
import i2bpro.layer.Layer;
import i2bpro.playlist.PlayList;
import i2bpro.player.Player;
import i2bpro.Exceptions.ErrorMsg;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.IOException;
import java.net.MalformedURLException;
import javax.media.NoPlayerException;
import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JPanel;



public final class ButtonPanel extends JPanel
{
    //  Deklaration der Attribute
    final Icon speaker_on = new ImageIcon(ButtonPanel.class.getResource(
            "/pics/speaker_on.png"));
    final Icon speaker_off = new ImageIcon(ButtonPanel.class.getResource(
            "/pics/speaker_off.png"));
    private JButton PlayButton = new JButton(
            new ImageIcon(ButtonPanel.class.getResource("/pics/play.png")));
    private JButton PauseButton = new JButton(
            new ImageIcon(ButtonPanel.class.getResource("/pics/pause.png")));
    private JButton StopButton = new JButton(
            new ImageIcon(ButtonPanel.class.getResource("/pics/stop.png")));
    private JButton MuteButton = new JButton(speaker_on);
    private JButton PriorButton = new JButton(
            new ImageIcon(ButtonPanel.class.getResource("/pics/prior.png")));
    private JButton NextButton = new JButton(
            new ImageIcon(ButtonPanel.class.getResource("/pics/next.png")));
    private JButton RandomButton = new JButton("Zufall einschalten");



    public ButtonPanel ()
    {
        setLayout(new FlowLayout(FlowLayout.CENTER, 1, 5));
        initButtons();
        addListeners();
    }



    private void initButtons()
    {
        PlayButton.setToolTipText("Play");
        PauseButton.setToolTipText("Pause");
        StopButton.setToolTipText("Stop");
        NextButton.setToolTipText("nächster Titel");
        PriorButton.setToolTipText("vorheriger Titel");
        MuteButton.setToolTipText("Mut einschalten");
        if (PlayList.getInstance().getPlayList().size() > 0)
        {
            PriorButton.setEnabled(true);
            NextButton.setEnabled(true);
        } else {
            PriorButton.setEnabled(false);
            NextButton.setEnabled(false);
        }
        PlayButton.setEnabled(true);
        PauseButton.setEnabled(false);
        StopButton.setEnabled(false);
        MuteButton.setEnabled(true);

        add(PriorButton);
        add(PlayButton);
        add(PauseButton);
        add(StopButton);
        add(NextButton);
        add(MuteButton);
        add(RandomButton);
    }



    private void addListeners() {
        addPlayButtonListener();
        addPauseButtonListener();
        addStopButtonListener();
        addPriorButtonListener();
        addNextButtonListener();
        addMuteButtonListener();
        addRandomButtonListener();
    }



    private void addPlayButtonListener()
    {
        PlayButton.addActionListener(new ActionListener()
        {
            public void actionPerformed (ActionEvent e)
            {
                try
                {
                    Layer.getInstance().play();
                }
                catch (LayerException ex) { ErrorMsg.show(ex.getMessage()); }
                catch (MalformedURLException ex) { ErrorMsg.show(ex.getMessage()); }
                catch (IOException ex) { ErrorMsg.show(ex.getMessage()); }
                catch (NoPlayerException ex) { ErrorMsg.show(ex.getMessage()); }
            }
        });
    }



    private void addPauseButtonListener()
    {
        PauseButton.addActionListener(new ActionListener()
        {
            public void actionPerformed (ActionEvent e)
            {
                Layer.getInstance().pause();
            }
        });
    }



    private void addStopButtonListener()
    {
        StopButton.addActionListener(new ActionListener()
        {
            public void actionPerformed (ActionEvent e)
            {
                Layer.getInstance().stop();
            }
        });
    }



    private void addPriorButtonListener()
    {
        PriorButton.addActionListener(new ActionListener()
        {
            public void actionPerformed (ActionEvent e)
            {
                try
                {
                    Layer.getInstance().Prior();
                }
                catch (LayerException ex) { ErrorMsg.show(ex.getMessage()); }
                catch (MalformedURLException ex) { ErrorMsg.show(ex.getMessage()); }
                catch (IOException ex) { ErrorMsg.show(ex.getMessage()); }
                catch (NoPlayerException ex) { ErrorMsg.show(ex.getMessage()); }
            }
        });
    }



    private void addNextButtonListener() 
    {
        NextButton.addActionListener(new ActionListener()
        {
            public void actionPerformed (ActionEvent e)
            {
                try
                {
                    Layer.getInstance().Next();
                }
                catch (LayerException ex) { ErrorMsg.show(ex.getMessage()); }
                catch (MalformedURLException ex) { ErrorMsg.show(ex.getMessage()); }
                catch (IOException ex) { ErrorMsg.show(ex.getMessage()); }
                catch (NoPlayerException ex) { ErrorMsg.show(ex.getMessage()); }
            }
        });
    }



    private void addMuteButtonListener()
    {
        MuteButton.addActionListener(new ActionListener()
        {
            public void actionPerformed (ActionEvent e)
            {
                Layer.getInstance().toggleMute();
            }
        });
    }



    private void addRandomButtonListener()
    {
        RandomButton.addActionListener(new ActionListener()
        {
            public void actionPerformed (ActionEvent e)
            {
                try
                {
                    if (Layer.getInstance().toggleRandom()) {
                        RandomButton.setText("Zufall abschalten");
                    } else {
                        RandomButton.setText("Zufall einschalten");
                    }
                }
                catch (LayerException ex) { ErrorMsg.show(ex.getMessage()); }
                catch (MalformedURLException ex) { ErrorMsg.show(ex.getMessage()); }
                catch (IOException ex) { ErrorMsg.show(ex.getMessage()); }
                catch (NoPlayerException ex) { ErrorMsg.show(ex.getMessage()); }
            }
        });
    }



    public void PlayerStarted()
    {
        PlayButton.setEnabled(false);
        PauseButton.setEnabled(true);
        StopButton.setEnabled(true);
        PriorButton.setEnabled(true);
        NextButton.setEnabled(true);
    }



    public void PlayerPause()
    {
        PlayButton.setEnabled(true);
        PauseButton.setEnabled(false);
        StopButton.setEnabled(true);
        PriorButton.setEnabled(true);
        NextButton.setEnabled(true);
    }



    public void PlayerStopped() 
    {
        PlayButton.setEnabled(true);
        PauseButton.setEnabled(false);
        StopButton.setEnabled(false);
        PriorButton.setEnabled(false);
        NextButton.setEnabled(false);
    }



    public void toggledMute() 
    {
        if (Player.getInstance().isMute())
        {
            MuteButton.setIcon(speaker_off);
            MuteButton.setToolTipText("Mute ausschalten");
        } else {
            MuteButton.setIcon(speaker_on);
            MuteButton.setToolTipText("Mute einschalten");
        }
    }
}