MooNoteProp.java

   1 import javax.swing.*;
   2 import java.awt.*;
   3 import java.awt.event.*;
   4 import java.beans.*;
   5
   6 /**
   7  * Graphical representation of a MIDI note.
   8  *
   9  * @author  Andersson, Andreen, Lanneskog, Pehrson
  10  * @version 1
  11  */
  12
  13 public class MooNoteProp extends JDialog{
  14
  15         private MooNote note;
  16     private JOptionPane optionPane;
  17         private JTextField pitch;
  18         private JTextField velocity;
  19         private JTextField length;
  20
  21         /**
  22          * Creates a new note preference dialog.
  23          * @param mn The note that will be graphically represented
  24          */
  25     public MooNoteProp(MooNote mn) {
  26         super((JFrame)null, true);
  27                 note = mn;
  28         setTitle("Note properties");
  29
  30                 pitch = new JTextField(new Integer(note.getPitch()).toString(),3);
  31                 JPanel pitchpanel = new JPanel();
  32                 pitchpanel.add(new Label("Pitch: "));
  33                 pitchpanel.add(pitch);
  34
  35
  36                 velocity = new JTextField(new Integer(note.getVelocity()).toString(),3);
  37                 JPanel velocitypanel = new JPanel();
  38                 velocitypanel.add(new Label("Velocity: "));
  39                 velocitypanel.add(velocity);
  40
  41                 length = new JTextField(new Integer(note.getDuration()).toString(),5);
  42                 JPanel lengthpanel = new JPanel();
  43                 lengthpanel.add(new Label("Length: "));
  44                 lengthpanel.add(length);
  45
  46         Object[] array = {"Set the note properties",
  47                         pitchpanel,
  48                         velocitypanel,
  49                         lengthpanel};
  50
  51         final String btnString1 = "Enter";
  52         final String btnString2 = "Cancel";
  53         Object[] options = {btnString1, btnString2};
  54
  55         optionPane = new JOptionPane(array,
  56                                     JOptionPane.QUESTION_MESSAGE,
  57                                     JOptionPane.YES_NO_OPTION,
  58                                     null,
  59                                     options,
  60                                     options[0]);
  61         setContentPane(optionPane);
  62         setDefaultCloseOperation(DISPOSE_ON_CLOSE);
  63
  64         ActionListener intValidator = new ActionListener() {
  65             public void actionPerformed(ActionEvent e) {
  66                                 if (e.getSource() instanceof JTextField){
  67                                         JTextField s = (JTextField)e.getSource();
  68                                         int num = Integer.parseInt(s.getText());
  69                                         if (num < 0)
  70                                                 num = 0;
  71                                         else if (num > 127 && s != length)
  72                                                 num = 127;
  73                                         s.setText(new Integer(num).toString());
  74                                 }
  75             }
  76         };
  77                 pitch.addActionListener(intValidator);
  78                 velocity.addActionListener(intValidator);
  79                 length.addActionListener(intValidator);
  80
  81         optionPane.addPropertyChangeListener(new PropertyChangeListener() {
  82             public void propertyChange(PropertyChangeEvent e) {
  83                 String prop = e.getPropertyName();
  84
  85                 if (isVisible()
  86                  && (e.getSource() == optionPane)
  87                  && (prop.equals(JOptionPane.VALUE_PROPERTY) ||
  88                      prop.equals(JOptionPane.INPUT_VALUE_PROPERTY))) {
  89                     Object value = optionPane.getValue();
  90
  91                     if (value == JOptionPane.UNINITIALIZED_VALUE) {
  92                         //ignore reset
  93                         return;
  94                     }
  95
  96                     // Reset the JOptionPane's value.
  97                     // If you don't do this, then if the user
  98                     // presses the same button next time, no
  99                     // property change event will be fired.
 100                     optionPane.setValue(
 101                             JOptionPane.UNINITIALIZED_VALUE);
 102
 103                     if (value.equals(btnString1)) {
 104                                                 note.setPitch(Integer.parseInt(pitch.getText()));
 105                                                 note.setVelocity(Integer.parseInt(velocity.getText()));
 106                                                 note.setDuration(Integer.parseInt(length.getText()));
 107
 108                         setVisible(false);
 109                     } else { // user closed dialog or clicked cancel
 110                         setVisible(false);
 111                     }
 112                 }
 113             }
 114         });
 115                 pack();
 116     }
 117
 118         public static void main(String[] args){
 119
 120                 MooNote n = new MooNote(0,0,10,20,0,30);
 121                 MooNoteProp prop = new MooNoteProp(n);
 122                 prop.setVisible(true);
 123                 prop = new MooNoteProp(n);
 124                 prop.setVisible(true);
 125
 126         }
 127 }