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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 _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(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"));
}
}
}
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