+package tim.prune.function;
+
+import java.awt.BorderLayout;
+import java.awt.FlowLayout;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+
+import javax.swing.BorderFactory;
+import javax.swing.JButton;
+import javax.swing.JDialog;
+import javax.swing.JLabel;
+import javax.swing.JList;
+import javax.swing.JPanel;
+import javax.swing.JScrollPane;
+import javax.swing.ListSelectionModel;
+import javax.swing.event.ListSelectionEvent;
+import javax.swing.event.ListSelectionListener;
+
+import tim.prune.App;
+import tim.prune.DataSubscriber;
+import tim.prune.GenericFunction;
+import tim.prune.I18nManager;
+import tim.prune.UpdateMessageBroker;
+import tim.prune.data.Field;
+import tim.prune.data.FieldList;
+import tim.prune.data.Track;
+import tim.prune.undo.UndoDeleteFieldValues;
+
+/**
+ * Class to provide the function to delete the values of a single field
+ * for all points in the current range
+ */
+public class DeleteFieldValues extends GenericFunction
+{
+ private JDialog _dialog = null;
+ private JList<String> _fieldList = null;
+ private FieldListModel _listModel = null;
+ private JButton _okButton = null;
+
+
+ /**
+ * Constructor
+ * @param inApp application object for callback
+ */
+ public DeleteFieldValues(App inApp)
+ {
+ super(inApp);
+ }
+
+ /** Get the name key */
+ public String getNameKey() {
+ return "function.deletefieldvalues";
+ }
+
+ /**
+ * Begin the function
+ */
+ public void begin()
+ {
+ // Make dialog window
+ if (_dialog == null)
+ {
+ _dialog = new JDialog(_parentFrame, I18nManager.getText(getNameKey()), true);
+ _dialog.setLocationRelativeTo(_parentFrame);
+ _dialog.setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);
+ _dialog.getContentPane().add(makeDialogComponents());
+ _dialog.pack();
+ }
+ // refresh the dialog
+ initDialog();
+ // Check whether any fields left
+ if (_listModel.getSize() < 1) {
+ _app.showErrorMessage(getNameKey(), "dialog.deletefieldvalues.nofields");
+ }
+ else {
+ _dialog.setVisible(true);
+ }
+ }
+
+
+ /**
+ * Create dialog components
+ * @return Panel containing all gui elements in dialog
+ */
+ private JPanel makeDialogComponents()
+ {
+ JPanel dialogPanel = new JPanel();
+ dialogPanel.setLayout(new BorderLayout());
+ dialogPanel.add(new JLabel(I18nManager.getText("dialog.deletefieldvalues.intro")), BorderLayout.NORTH);
+ // List in centre
+ _fieldList = new JList<String>(new String[] {"First field", "Second field"});
+ // These entries will be replaced by the initDialog method
+ _fieldList.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
+ _fieldList.addListSelectionListener(new ListSelectionListener() {
+ public void valueChanged(ListSelectionEvent e) {
+ _okButton.setEnabled(_fieldList.getSelectedIndex() >= 0);
+ }
+ });
+ dialogPanel.add(new JScrollPane(_fieldList), BorderLayout.CENTER);
+ // button panel at bottom
+ JPanel buttonPanel = new JPanel();
+ buttonPanel.setLayout(new FlowLayout(FlowLayout.RIGHT));
+ _okButton = new JButton(I18nManager.getText("button.ok"));
+ ActionListener okListener = new ActionListener() {
+ public void actionPerformed(ActionEvent e)
+ {
+ finish();
+ }
+ };
+ _okButton.addActionListener(okListener);
+ _okButton.setEnabled(false);
+ buttonPanel.add(_okButton);
+ JButton cancelButton = new JButton(I18nManager.getText("button.cancel"));
+ cancelButton.addActionListener(new ActionListener() {
+ public void actionPerformed(ActionEvent e)
+ {
+ _dialog.dispose();
+ }
+ });
+ buttonPanel.add(cancelButton);
+ dialogPanel.add(buttonPanel, BorderLayout.SOUTH);
+ dialogPanel.setBorder(BorderFactory.createEmptyBorder(10, 10, 10, 15));
+ return dialogPanel;
+ }
+
+ /**
+ * Initialise the dialog with the field list
+ */
+ private void initDialog()
+ {
+ _listModel = new FieldListModel();
+ int selStart = _app.getTrackInfo().getSelection().getStart();
+ int selEnd = _app.getTrackInfo().getSelection().getEnd();
+ // Loop over fields in track
+ final Track track = _app.getTrackInfo().getTrack();
+ FieldList fieldsInTrack = track.getFieldList();
+ for (int i=0; i<fieldsInTrack.getNumFields(); i++) {
+ Field field = fieldsInTrack.getField(i);
+ if (field != Field.LATITUDE && field != Field.LONGITUDE
+ && track.hasData(field, selStart, selEnd))
+ {
+ _listModel.addField(field);
+ }
+ }
+ _fieldList.setModel(_listModel);
+ _fieldList.clearSelection();
+ _okButton.setEnabled(false);
+ }
+
+ /**
+ * Finish the dialog when OK pressed
+ */
+ private void finish()
+ {
+ // Complete function
+ Field field = _listModel.getField(_fieldList.getSelectedIndex());
+ if (field != null)
+ {
+ UndoDeleteFieldValues undo = new UndoDeleteFieldValues(_app.getTrackInfo(), field);
+ final int selStart = _app.getTrackInfo().getSelection().getStart();
+ final int selEnd = _app.getTrackInfo().getSelection().getEnd();
+ final Track track = _app.getTrackInfo().getTrack();
+ for (int i=selStart; i<= selEnd; i++) {
+ track.getPoint(i).setFieldValue(field, null, false);
+ }
+ _dialog.dispose();
+ _app.getTrackInfo().getSelection().markInvalid();
+ UpdateMessageBroker.informSubscribers(DataSubscriber.DATA_EDITED);
+ _app.completeFunction(undo, I18nManager.getText("confirm.deletefieldvalues"));
+ }
+ }
+}