tim/prune/gui/WaypointNameMatcher.java

   1 package tim.prune.gui;
   2
   3 import java.util.ArrayList;
   4 import javax.swing.AbstractListModel;
   5
   6 import tim.prune.data.DataPoint;
   7 import tim.prune.data.Track;
   8
   9 /**
  10  * Class to deal with the matching of waypoint names
  11  * and the representation in a list
  12  */
  13 public class WaypointNameMatcher extends AbstractListModel
  14 {
  15         private ArrayList<DataPoint> _waypoints = null;
  16         private int _numPoints = 0;
  17         private String[] _waypointNames = null;
  18         private ArrayList<DataPoint> _matches = null;
  19
  20
  21         /**
  22          * Initialisation giving Track object
  23          * @param inTrack Track object
  24          */
  25         public void init(Track inTrack)
  26         {
  27                 // Get list of waypoints from track
  28                 _waypoints = new ArrayList<DataPoint>();
  29                 inTrack.getWaypoints(_waypoints);
  30                 // Initialise match flags and waypoint names
  31                 _numPoints = _waypoints.size();
  32                 _waypointNames = new String[_numPoints];
  33                 for (int i=0; i<_numPoints; i++) {
  34                         _waypointNames[i] = _waypoints.get(i).getWaypointName().toLowerCase();
  35                 }
  36                 _matches = new ArrayList<DataPoint>();
  37                 findMatches(null);
  38         }
  39
  40         /**
  41          * Search for the given term and collect the matches
  42          * @param inSearch string to search for
  43          */
  44         public void findMatches(String inSearch)
  45         {
  46                 // Reset array
  47                 _matches.clear();
  48                 // Convert search to lower case to match name array
  49                 String search = null;
  50                 if (inSearch != null && !inSearch.equals("")) {
  51                         search = inSearch.toLowerCase();
  52                 }
  53                 // Loop through waypoint names
  54                 for (int i=0; i<_numPoints; i++)
  55                 {
  56                         if (search == null || _waypointNames[i].indexOf(search) >= 0)
  57                         {
  58                                 _matches.add(_waypoints.get(i));
  59                         }
  60                 }
  61                 fireChanged();
  62         }
  63
  64         /**
  65          * @see javax.swing.ListModel#getSize()
  66          */
  67         public int getSize()
  68         {
  69                 if (_numPoints == 0) return 0;
  70                 return _matches.size();
  71         }
  72
  73         /**
  74          * @see javax.swing.ListModel#getElementAt(int)
  75          */
  76         public Object getElementAt(int inIndex)
  77         {
  78                 return _matches.get(inIndex).getWaypointName();
  79         }
  80
  81         /**
  82          * Get the waypoint at the given index
  83          * @param inIndex index number, starting at 0
  84          * @return DataPoint object
  85          */
  86         public DataPoint getWaypoint(int inIndex)
  87         {
  88                 return _matches.get(inIndex);
  89         }
  90
  91         /**
  92          * Fire event to notify that contents have changed
  93          */
  94         public void fireChanged()
  95         {
  96                 this.fireContentsChanged(this, 0, getSize()-1);
  97         }
  98 }