1 package tim.prune.load.babel;
3 import java.awt.event.KeyAdapter;
4 import java.awt.event.KeyEvent;
5 import java.awt.event.KeyListener;
7 import javax.swing.JPanel;
8 import javax.swing.SwingUtilities;
11 * Superclass of all the filter definition panels, to be added in the cardset
12 * of the AddFilterDialog
14 public abstract class FilterDefinition extends JPanel
16 /** Parent dialog to inform of parameter changes */
17 private AddFilterDialog _parentDialog = null;
18 /** Listener for key presses on the parameter entry fields */
19 protected KeyListener _paramChangeListener = null;
24 public FilterDefinition(AddFilterDialog inFilterDialog)
26 _parentDialog = inFilterDialog;
27 _paramChangeListener = new KeyAdapter() {
28 public void keyTyped(KeyEvent arg0) {
29 SwingUtilities.invokeLater(new Runnable() {
31 _parentDialog.filterParamsChanged();
39 * @return true if the filter definition is valid
41 public abstract boolean isFilterValid();
44 * @return filter definition to pass to gpsbabel
46 public String getString()
48 return "-x " + getFilterName() + getParameters();
51 /** @return filter name */
52 protected abstract String getFilterName();
54 /** Construct the GUI elements and add them to the panel */
55 protected abstract void makePanelContents();
57 /** @return filter parameters */
58 protected abstract String getParameters();