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

package i2bpro.layer.Panels;

import i2bpro.layer.Layer;
import i2bpro.playlist.PlayList;
import i2bpro.player.Player;
import i2bpro.player.PositionUpdate;
import java.awt.BorderLayout;
import java.awt.event.MouseWheelEvent;
import java.awt.event.MouseWheelListener;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JSlider;
import javax.swing.SwingConstants;
import javax.swing.border.EmptyBorder;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;



public final class PositionPanel extends JPanel
{
    //  Deklaration der Attribute
    private JSlider position = new JSlider(SwingConstants.HORIZONTAL);
    private JLabel nullLabel = new JLabel("00:00:00");
    private JLabel positionLabel = new JLabel("00:00:00");
    private JLabel totalTimeLabel = new JLabel("00:00:00");



    public PositionPanel()
    {
        setLayout(new BorderLayout());
        initPosition(); //  Initialisierung des JSlider Objekts
        initLabels();   //  Initialisierung der JLabel Objekte
        addListener();  //  Initialisierung der Listener
    }



    private void initPosition()
    {
        position.setEnabled(false);
        add(positionLabel, BorderLayout.SOUTH);
    }



    private void initLabels()
    {
        positionLabel.setLocation(100,1);
        positionLabel.setHorizontalAlignment(JLabel.CENTER);
        nullLabel.setBorder(new EmptyBorder(5,5,5,5));
        totalTimeLabel.setBorder(new EmptyBorder(5,5,5,5));
        positionLabel.setBorder(new EmptyBorder(0,0,5,0));
        add(position, BorderLayout.CENTER);
        add(nullLabel, BorderLayout.WEST);
        add(totalTimeLabel, BorderLayout.EAST);
    }



    public void PlayerStarted() 
    {
        Layer.getInstance().setPositionUpdate(true);
        if (position.isEnabled() == false)
        {
            position.setMinimum(0);
            position.setMaximum(Player.getInstance().getDuration().getSeconds());
            position.setEnabled(true);
            totalTimeLabel.setText(Player.getInstance().getDuration().getString());
        }
        startPositionUpdate();
    }



    public void PlayerStopped()
    {
        if (PlayList.getInstance().getPlayList().size() > 0)
        {
            position.setMinimum(0);
            position.setMaximum(0);
            position.setValue(0);
            position.setEnabled(false);
        }
        Layer.getInstance().setPositionUpdate(true);
        position.setMaximum(0);
        positionLabel.setText("00:00:00");
        totalTimeLabel.setText("00:00:00");
        Layer.getInstance().setPositionUpdate(false);
    }



    private void startPositionUpdate()
    {
        PositionUpdate posUpdate = new PositionUpdate();
        posUpdate.start();
    }



    private void addListener()
    {
        position.addChangeListener(new ChangeListener()
        {
            public void stateChanged(ChangeEvent e)
            {
                if (Layer.getInstance().isPositionUpdate())
                {
                    Layer.getInstance().setPositionUpdate(false);
                } else {
                    if (Player.getInstance().getState() > 0)
                    {
                        Player.getInstance().setPosition(position.getValue());
                    }
                    if (Player.getInstance().getState() == 2)
                        positionLabel.setText(
                                Player.getInstance().getPosition().getString());
                }
            }
        });



        position.addMouseWheelListener(new MouseWheelListener()
        {
            public void mouseWheelMoved(MouseWheelEvent e)
            {
                position.setValue(position.getValue() - e.getUnitsToScroll());
            }
        });
    }



    public void setPositionLabel(String text) { positionLabel.setText(text); }



    public void setPositionValue(int val)
    {
        position.setValue(val);
    }
}