MooView.java

   1 import javax.sound.midi.*;
   2 import javax.swing.*;
   3 import java.awt.*;
   4 import java.awt.event.*;
   5
   6 /**
   7  * The main view, the container of the track views.
   8  *
   9  * @author  Einar Pehrson
  10  */
  11
  12 public class MooView extends JScrollPane {
  13
  14         private JPanel trackPanel;
  15         private int numberOfTracks;
  16
  17         /**
  18          * Creates the main view
  19          */
  20         public MooView(Track[] tracks) {
  21                 super(VERTICAL_SCROLLBAR_ALWAYS, HORIZONTAL_SCROLLBAR_AS_NEEDED);
  22                 numberOfTracks = tracks.length;
  23                 trackPanel = new JPanel(new GridLayout(1,3), true);
  24                 setTracks(tracks);
  25                 setViewportView(trackPanel);
  26         }
  27
  28         /**
  29          * Fills the track panel with track views for all tracks in the current sequence.
  30          * @param tracks        the tracks for which to add views
  31          */
  32         public void setTracks(Track[] tracks) {
  33                 trackPanel.removeAll();
  34                 trackPanel.setLayout(new GridLayout(1,tracks.length));
  35                 for (int i = 0; i < tracks.length; i++) {
  36                         trackPanel.add(new MooTrackView(tracks[i]));
  37                 }
  38                 trackPanel.validate();
  39         }
  40
  41         /**
  42          * Calls on each track view to update itself.
  43          */
  44         public void update() {
  45                 Component[] comps = getComponents();
  46                 for (int i = 0; i < comps.length; i++) {
  47                         if(comps[i] instanceof MooTrackView) ((MooTrackView)comps[i]).update();
  48                 }
  49         }
  50
  51         /**
  52          * Creates a view for the given track and adds it to the main view.
  53          * @param track         the track for which to add a view
  54          * @param index         the index at which to insert the view
  55          */
  56         public void addTrackView(Track track, int index) {
  57                 ((GridLayout)trackPanel.getLayout()).setColumns(++numberOfTracks);
  58                 trackPanel.add(new MooTrackView(track), index);
  59                 validate();
  60         }
  61
  62         /**
  63          * Removes the view for the given track.
  64          * @param index         the index of the track for which to remove the view
  65          */
  66         public void removeTrackView(int index) {
  67                 remove(index);
  68                 ((GridLayout)trackPanel.getLayout()).setColumns(--numberOfTracks);
  69                 validate();
  70         }
  71 }