source: josm/trunk/src/org/openstreetmap/josm/actions/DiskAccessAction.java@ 1180

// License: GPL. Copyright 2007 by Immanuel Scholz and others
package org.openstreetmap.josm.actions;

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

import java.io.File;

import javax.swing.JFileChooser;
import javax.swing.JOptionPane;

import org.openstreetmap.josm.Main;
import org.openstreetmap.josm.tools.Shortcut;

/**
 * Helper class for all actions that access the disk
 */
abstract public class DiskAccessAction extends JosmAction {

    public DiskAccessAction(String name, String iconName, String tooltip, Shortcut shortcut) {
        super(name, iconName, tooltip, shortcut, true);
    }

    protected static JFileChooser createAndOpenFileChooser(boolean open, boolean multiple, String title) {
        String curDir = Main.pref.get("lastDirectory");
        if (curDir.equals(""))
            curDir = ".";
        JFileChooser fc = new JFileChooser(new File(curDir));
        if(title != null)
            fc.setDialogTitle(title);

        fc.setMultiSelectionEnabled(multiple);
        for (int i = 0; i < ExtensionFileFilter.filters.length; ++i)
            fc.addChoosableFileFilter(ExtensionFileFilter.filters[i]);
        fc.setAcceptAllFileFilterUsed(true);

        int answer = open ? fc.showOpenDialog(Main.parent) : fc.showSaveDialog(Main.parent);
        if (answer != JFileChooser.APPROVE_OPTION)
            return null;

        if (!fc.getCurrentDirectory().getAbsolutePath().equals(curDir))
            Main.pref.put("lastDirectory", fc.getCurrentDirectory().getAbsolutePath());

        if (!open) {
            File file = fc.getSelectedFile();
            if (file == null || (file.exists() && JOptionPane.YES_OPTION !=
                    JOptionPane.showConfirmDialog(Main.parent, tr("File exists. Overwrite?"), tr("Overwrite"), JOptionPane.YES_NO_OPTION)))
                return null;
        }

        return fc;
    }
}