source: josm/src/org/openstreetmap/josm/actions/RenameLayerAction.java@ 172

package org.openstreetmap.josm.actions;

import static org.openstreetmap.josm.tools.I18n.tr;

import java.awt.event.ActionEvent;
import java.io.File;

import javax.swing.AbstractAction;
import javax.swing.Box;
import javax.swing.JCheckBox;
import javax.swing.JDialog;
import javax.swing.JOptionPane;
import javax.swing.JTextField;

import org.openstreetmap.josm.Main;
import org.openstreetmap.josm.gui.layer.Layer;
import org.openstreetmap.josm.tools.ImageProvider;

/**
 * Action to rename an specific layer. Provides the option to rename the
 * file, this layer was loaded from as well (if it was loaded from a file).
 * 
 * @author Imi
 */
public class RenameLayerAction extends AbstractAction {

        private File file;
        private Layer layer;

        /**
         * @param file The filen of the original location of this layer.
         *              If null, no possibility to "rename the file as well" is provided. 
         */
        public RenameLayerAction(File file, Layer layer) {
                super(tr("Rename layer"), ImageProvider.get("dialogs", "edit"));
                this.file = file;
                this.layer = layer;
        }

        public void actionPerformed(ActionEvent e) {
                Box panel = Box.createVerticalBox();
                final JTextField name = new JTextField(layer.name);
                panel.add(name);
                JCheckBox filerename = new JCheckBox(tr("Also rename the file"));
                if (Main.applet) {
                        filerename.setEnabled(false);
                        filerename.setSelected(false);
                } else {
                        panel.add(filerename);
                        filerename.setEnabled(file != null);
                }
                if (filerename.isEnabled())
                        filerename.setSelected(Main.pref.getBoolean("layer.rename-file", true));

                final JOptionPane optionPane = new JOptionPane(panel, JOptionPane.QUESTION_MESSAGE, JOptionPane.OK_CANCEL_OPTION){
                        @Override public void selectInitialValue() {
                                name.requestFocusInWindow();
                                name.selectAll();
                        }
                };
                final JDialog dlg = optionPane.createDialog(Main.parent, tr("Rename layer"));
                dlg.setVisible(true);

                Object answer = optionPane.getValue();
                if (answer == null || answer == JOptionPane.UNINITIALIZED_VALUE ||
                                (answer instanceof Integer && (Integer)answer != JOptionPane.OK_OPTION)) {
                        return;
                }

                String nameText = name.getText();
                if (filerename.isEnabled()) {
                        Main.pref.put("layer.rename-file", filerename.isSelected());
                        if (filerename.isSelected()) {
                                String newname = nameText;
                                if (newname.indexOf("/") == -1 && newname.indexOf("\\") == -1)
                                        newname = file.getParent() + File.separator + newname;
                                String oldname = file.getName();
                                if (name.getText().indexOf('.') == -1 && oldname.indexOf('.') >= 0)
                                        newname += oldname.substring(oldname.lastIndexOf('.'));
                                File newFile = new File(newname);
                                if (file.renameTo(newFile)) {
                                        layer.associatedFile = newFile;
                                        nameText = newFile.getName();
                                } else {
                                        JOptionPane.showMessageDialog(Main.parent, tr("Could not rename the file \"{0}\".", file.getPath()));
                                        return;
                                }
                        }
                }
                layer.name = nameText;
                Main.parent.repaint();
        }
}