src/tim/prune/load/babel/DistanceFilter.java

   1 package tim.prune.load.babel;
   2
   3 import java.awt.BorderLayout;
   4 import java.awt.Component;
   5 import java.awt.GridLayout;
   6
   7 import javax.swing.Box;
   8 import javax.swing.BoxLayout;
   9 import javax.swing.JComboBox;
  10 import javax.swing.JLabel;
  11 import javax.swing.JPanel;
  12
  13 import tim.prune.I18nManager;
  14 import tim.prune.gui.DecimalNumberField;
  15 import tim.prune.gui.WholeNumberField;
  16
  17 /**
  18  * Distance filter for GPSBabel (compress by distance, or nearby points)
  19  */
  20 public class DistanceFilter extends FilterDefinition
  21 {
  22         /** Constructor */
  23         public DistanceFilter(AddFilterDialog inFilterDialog)
  24         {
  25                 super(inFilterDialog);
  26                 makePanelContents();
  27         }
  28
  29         private DecimalNumberField _distField = null;
  30         private JComboBox<String> _distUnitsCombo = null;
  31         private WholeNumberField _secondsField = null;
  32
  33
  34         /** @return filter name */
  35         protected String getFilterName() {
  36                 return "position";
  37         }
  38
  39         /** Make the panel contents */
  40         protected void makePanelContents()
  41         {
  42                 setLayout(new BorderLayout());
  43                 JPanel boxPanel = new JPanel();
  44                 boxPanel.setLayout(new BoxLayout(boxPanel, BoxLayout.Y_AXIS));
  45                 add(boxPanel, BorderLayout.NORTH);
  46                 JLabel topLabel = new JLabel(I18nManager.getText("dialog.gpsbabel.filter.distance.intro"));
  47                 topLabel.setAlignmentX(Component.LEFT_ALIGNMENT);
  48                 boxPanel.add(topLabel);
  49                 boxPanel.add(Box.createVerticalStrut(18)); // spacer
  50                 // Main three-column grid
  51                 JPanel gridPanel = new JPanel();
  52                 gridPanel.setLayout(new GridLayout(0, 3, 4, 4));
  53                 gridPanel.add(new JLabel(I18nManager.getText("dialog.gpsbabel.filter.distance.distance")));
  54                 _distField = new DecimalNumberField();
  55                 _distField.addKeyListener(_paramChangeListener);
  56                 gridPanel.add(_distField);
  57                 _distUnitsCombo = new JComboBox<String>(new String[] {I18nManager.getText("units.metres"), I18nManager.getText("units.feet")});
  58                 gridPanel.add(_distUnitsCombo);
  59                 gridPanel.add(new JLabel(I18nManager.getText("dialog.gpsbabel.filter.distance.time")));
  60                 _secondsField = new WholeNumberField(4);
  61                 _secondsField.addKeyListener(_paramChangeListener);
  62                 gridPanel.add(_secondsField);
  63                 gridPanel.add(new JLabel(I18nManager.getText("units.seconds")));
  64                 gridPanel.setAlignmentX(Component.LEFT_ALIGNMENT);
  65                 boxPanel.add(gridPanel);
  66         }
  67
  68         /**
  69          * @return true if the filters are valid
  70          */
  71         public boolean isFilterValid()
  72         {
  73                 if (_distField.getText() == null || _distField.getText().trim().equals("")) {
  74                         return false; // no distance given
  75                 }
  76                 final boolean timeGiven = _secondsField.getText() != null && _secondsField.getText().trim().length() > 0;
  77                 if (timeGiven && _secondsField.getValue() <= 1) {
  78                         return false; // must have a decent number of seconds
  79                 }
  80                 // check the distance
  81                 return (_distField.getValue() > 0.001); // no zero or negative distances allowed
  82         }
  83
  84         /**
  85          * @return filter parameters as a string, or null
  86          */
  87         protected String getParameters()
  88         {
  89                 if (!isFilterValid()) return null;
  90                 StringBuilder builder = new StringBuilder();
  91                 // Get the distance
  92                 double dValue = _distField.getValue();
  93                 builder.append(",distance=").append(dValue);
  94                 // units of distance (miles by default)
  95                 builder.append(_distUnitsCombo.getSelectedIndex() == 0 ? "m" : "f"); // metres or feet
  96
  97                 // is there a time as well?
  98                 final boolean timeGiven = _secondsField.getText() != null && _secondsField.getText().trim().length() > 0;
  99                 if (timeGiven) {
 100                         builder.append(",time=").append(_secondsField.getValue()); // no s at the end
 101                 }
 102                 return builder.toString();
 103         }
 104 }