tim/prune/load/babel/InterpolateFilter.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  * Interpolate filter for GPSBabel (adding extra points, does that make it still a filter?)
  19  * Very similar to the distance filter in terms of gui
  20  */
  21 public class InterpolateFilter extends FilterDefinition
  22 {
  23         /** Constructor */
  24         public InterpolateFilter(AddFilterDialog inFilterDialog)
  25         {
  26                 super(inFilterDialog);
  27                 makePanelContents();
  28         }
  29
  30         private DecimalNumberField _distField = null;
  31         private JComboBox<String> _distUnitsCombo = null;
  32         private WholeNumberField _secondsField = null;
  33
  34
  35         /** @return filter name */
  36         protected String getFilterName() {
  37                 return "interpolate";
  38         }
  39
  40         /** Make the panel contents */
  41         protected void makePanelContents()
  42         {
  43                 setLayout(new BorderLayout());
  44                 JPanel boxPanel = new JPanel();
  45                 boxPanel.setLayout(new BoxLayout(boxPanel, BoxLayout.Y_AXIS));
  46                 add(boxPanel, BorderLayout.NORTH);
  47                 JLabel topLabel = new JLabel(I18nManager.getText("dialog.gpsbabel.filter.interpolate.intro"));
  48                 topLabel.setAlignmentX(Component.LEFT_ALIGNMENT);
  49                 boxPanel.add(topLabel);
  50                 boxPanel.add(Box.createVerticalStrut(18)); // spacer
  51                 // Main three-column grid
  52                 JPanel gridPanel = new JPanel();
  53                 gridPanel.setLayout(new GridLayout(0, 3, 4, 4));
  54                 gridPanel.add(new JLabel(I18nManager.getText("dialog.gpsbabel.filter.interpolate.distance")));
  55                 _distField = new DecimalNumberField();
  56                 _distField.addKeyListener(_paramChangeListener);
  57                 gridPanel.add(_distField);
  58                 _distUnitsCombo = new JComboBox<String>(new String[] {I18nManager.getText("units.kilometres"), I18nManager.getText("units.miles")});
  59                 gridPanel.add(_distUnitsCombo);
  60                 gridPanel.add(new JLabel(I18nManager.getText("dialog.gpsbabel.filter.interpolate.time")));
  61                 _secondsField = new WholeNumberField(4);
  62                 _secondsField.addKeyListener(_paramChangeListener);
  63                 gridPanel.add(_secondsField);
  64                 gridPanel.add(new JLabel(I18nManager.getText("units.seconds")));
  65                 gridPanel.setAlignmentX(Component.LEFT_ALIGNMENT);
  66                 boxPanel.add(gridPanel);
  67         }
  68
  69         /**
  70          * @return true if the filters are valid
  71          */
  72         public boolean isFilterValid()
  73         {
  74                 final boolean distGiven = _distField.getText() != null && _distField.getText().trim().length() > 0;
  75                 final boolean timeGiven = _secondsField.getText() != null && _secondsField.getText().trim().length() > 0;
  76                 if ((!distGiven && !timeGiven) || (distGiven && timeGiven)) {
  77                         return false; // either one or the other, not both
  78                 }
  79                 if (distGiven && _distField.getValue() < 0.0001) {
  80                         return false; // must have a decent distance
  81                 }
  82                 if (timeGiven && _secondsField.getValue() <= 1) {
  83                         return false; // must have a decent number of seconds
  84                 }
  85                 // must be ok
  86                 return true;
  87         }
  88
  89         /**
  90          * @return filter parameters as a string, or null
  91          */
  92         protected String getParameters()
  93         {
  94                 if (!isFilterValid()) return null;
  95                 StringBuilder builder = new StringBuilder();
  96                 final boolean distGiven = _distField.getText() != null && _distField.getText().trim().length() > 0;
  97                 final boolean timeGiven = _secondsField.getText() != null && _secondsField.getText().trim().length() > 0;
  98                 if (distGiven)
  99                 {
 100                         // Get the distance
 101                         double dValue = _distField.getValue();
 102                         builder.append(",distance=").append(dValue);
 103                         // units of distance (km or miles)
 104                         builder.append(_distUnitsCombo.getSelectedIndex() == 0 ? "k" : "m");
 105                 }
 106                 else if (timeGiven) {
 107                         // time
 108                         builder.append(",time=").append(_secondsField.getValue()); // no s at the end
 109                 }
 110                 return builder.toString();
 111         }
 112 }