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

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

import java.io.IOException;
import java.util.Collection;
import java.util.LinkedList;

import javax.swing.DefaultListModel;
import javax.swing.JList;
import javax.swing.JOptionPane;

import org.openstreetmap.josm.Main;
import org.openstreetmap.josm.data.Preferences;

/**
 * List class that read and save its content from the bookmark file.
 * @author imi
 */
public class BookmarkList extends JList {

	/**
	 * Create a bookmark list as well as the Buttons add and remove.
	 */
	public BookmarkList() {
		setModel(new DefaultListModel());
		load();
		setVisibleRowCount(7);
	}

	/**
	 * Loads the bookmarks from file.
	 */
	public void load() {
		DefaultListModel model = (DefaultListModel)getModel();
		model.removeAllElements();
		try {
			for (Preferences.Bookmark b : Main.pref.loadBookmarks())
				model.addElement(b);
		} catch (IOException e) {
			e.printStackTrace();
			JOptionPane.showMessageDialog(Main.parent, tr("Could not read bookmarks.")+"\n"+e.getMessage());
		}
	}

	/**
	 * Save all bookmarks to the preferences file
	 */
	public void save() {
		try {
			Collection<Preferences.Bookmark> bookmarks = new LinkedList<Preferences.Bookmark>();
			for (Object o : ((DefaultListModel)getModel()).toArray())
				bookmarks.add((Preferences.Bookmark)o);
			Main.pref.saveBookmarks(bookmarks);
		} catch (IOException e) {
			JOptionPane.showMessageDialog(Main.parent,tr("Could not write bookmark.")+"\n"+e.getMessage());
		}
	}
}