C:/Projekte/I2BPro/src/i2bpro/layer/Dialogs/AlbumAuswahlDlg.java

package i2bpro.layer.Dialogs;

import i2bpro.Exceptions.ErrorMsg;
import i2bpro.Exceptions.PlayListException;
import i2bpro.layer.InfoMsg;
import i2bpro.layer.Layer;
import i2bpro.playlist.PlayList;
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.GridLayout;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.IOException;
import java.net.MalformedURLException;
import java.util.HashMap;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
import javax.swing.ButtonGroup;
import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
import javax.swing.border.EmptyBorder;
import org.jaudiotagger.audio.exceptions.CannotReadException;
import org.jaudiotagger.audio.exceptions.CannotWriteException;
import org.jaudiotagger.audio.exceptions.InvalidAudioFrameException;
import org.jaudiotagger.audio.exceptions.ReadOnlyFileException;
import org.jaudiotagger.tag.TagException;



public final class AlbumAuswahlDlg extends JDialog implements ActionListener
{
    //  Beinhaltet die Alben und deren Informationen aus der
    //  Datenbank der freedb.org
    private HashMap<Integer, HashMap<String, String>> alben =
            new HashMap<Integer,HashMap<String, String>>();

    //  Enthält die Radiobuttons mit der das Album ausgewählt werden kann
    private ButtonGroup group = new ButtonGroup();



    public AlbumAuswahlDlg(String result)
    {
        super(Layer.getInstance(), "Albumauswahl", true);
        init(result);
    }



    private void init(String result)
    {
        //  Zerlegen der Suchergebnisse in die einzelnen Alben und
        //  zerlegen der ALbumdaten in ihre Bestandteile
        String[] lines = result.split("\n");
        Pattern pattern = Pattern.compile(" ");
        Matcher matcher;
        int j;
        int endGenre=0, beginCDID=0, endCDID=0, beginTitle=0;
        for (int i=1; i<lines.length; i++)
        {
            matcher = pattern.matcher(lines[i]);
            boolean found = false;
            j=1;
            while (matcher.find())
            {
                if (j == 1)
                {
                    endGenre = matcher.start();
                    beginCDID = matcher.end();
                }
                if (j == 2)
                {
                    endCDID = matcher.start();
                    beginTitle = matcher.end();
                    found = true;
                    break;
                }
                j++;
            }
            // Bei gefundenen Albuminformationen diese Speichern
            if (found)
            {
                String genre = lines[i].substring(0, endGenre);
                String cdid = lines[i].substring(beginCDID, endCDID);
                String title = lines[i].substring(beginTitle, lines[i].length());
                alben.put(i, new HashMap<String, String>());
                alben.get(i).put("genre", genre);
                alben.get(i).put("cdid", cdid);
                alben.get(i).put("title", title);
            }
        }
        // Sind keine Alben gefunden worden, dann Dialog beenden und
        //  Hinweistext ausgeben.
        if (alben.isEmpty())
        {
            setVisible(false);
            InfoMsg.show(1);
            dispose();
        } else {
            //  Wurden Alben gefunden, dann Dialog initialisieren.
            JPanel panel = new JPanel();
            panel.setLayout(new GridLayout(alben.size(),1));
            panel.setBorder(new EmptyBorder(5,5,5,5));
            for (int i=1; i<=alben.size(); i++)
            {
                String text = alben.get(i).get("title") + ", "
                        + alben.get(i).get("genre");
                JRadioButton rb = new JRadioButton(text);
                if (i == 1) rb.setSelected(true);
                rb.setActionCommand(alben.get(i).get("genre")+ "+"
                        + alben.get(i).get("cdid"));
                panel.add(rb);
                group.add(rb);
            }
            setLayout(new BorderLayout());
            add(panel, BorderLayout.CENTER);
            JButton button = new JButton("Übernehmen");
            button.addActionListener(this);
            add(button, BorderLayout.SOUTH);
        }
    }



    public void run()
    {
        if (alben.isEmpty() == false)
        {
            this.pack();
            Dimension dim = Toolkit.getDefaultToolkit().getScreenSize();
            int y = (int)((dim.getHeight()/2)-(getHeight()/2));
            int x = (int)((dim.getWidth()/2)-(getWidth()/2));
            setLocation(x, y);
            this.setVisible(true);
        }
    }



    public void actionPerformed(ActionEvent e)
    {
        if (e.getActionCommand().equals("Übernehmen"))
        {
            try
            {
                PlayList.getInstance().setAlbumInfos(
                        group.getSelection().getActionCommand());
                setVisible(false);
                dispose();
            } 
            catch (MalformedURLException ex) {ErrorMsg.show(ex.getMessage());}
            catch (IOException ex) {ErrorMsg.show(ex.getMessage());}
            catch (CannotReadException ex) {ErrorMsg.show(ex.getMessage());}
            catch (TagException ex) {ErrorMsg.show(ex.getMessage());}
            catch (ReadOnlyFileException ex) {ErrorMsg.show(ex.getMessage());}
            catch (InvalidAudioFrameException ex) {ErrorMsg.show(ex.getMessage());}
            catch (CannotWriteException ex) {ErrorMsg.show(ex.getMessage());}
            catch (PlayListException ex) {ErrorMsg.show(ex.getMessage());}
        }
    }
}