| gvSIG desktop 1

/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana

 *

 * Copyright (C) 2005 IVER T.I. and Generalitat Valenciana.

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version 2

 * of the License, or (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,USA.

 *

 * For more information, contact:

 *

 *  Generalitat Valenciana

 *   Conselleria d'Infraestructures i Transport

 *   Av. Blasco Ib??ez, 50

 *   46010 VALENCIA

 *   SPAIN

 *

 *      +34 963862235

 *   gvsig@gva.es

 *      www.gvsig.gva.es

 *

 *    or

 *

 *   IVER T.I. S.A

 *   Salamanca 50

 *   46005 Valencia

 *   Spain

 *

 *   +34 963163400

 *   dac@iver.es

 */

package com.iver.cit.gvsig.gui;

import java.util.Vector;

import javax.swing.ComboBoxModel;

import com.iver.andami.PluginServices;

import com.iver.cit.gvsig.project.documents.layout.Attributes;

import com.iver.utiles.swing.JComboBox;

/**

 * <p>Class representing a JComboBox with the measure units handled by the application.

 * It takes values from Attributes.NAMES and Attributes.CHANGE static fields. So, to

 * add more measure units, you must edit Attributes class and change will be automatically

 * reflected in the combo box.</p>

 *

 * <p>The internatiolanization of the field is automatically handled by the system</p>

 * @author jaume dominguez faus - jaume.dominguez@iver.es

 */

public class JUnitsComboBox extends JComboBox {

        private static final long serialVersionUID = 8015263853737441433L;

        /**

         * Creates a new instance of JUnitComboBox leaving "pixel" units automatically

         * pre-selected.

         */

        public JUnitsComboBox() {

                super();

                String[] units = new String[Attributes.NAMES.length+1];

                for (int i = 0; i < Attributes.NAMES.length; i++) {

                        units[i] = PluginServices.getText(this, Attributes.NAMES[i]);

                }

                units[units.length-1] = PluginServices.getText(this, "pixels");

                for (int i = 0; i < units.length; i++) {

                        super.addItem(units[i]);

                }

                setSelectedIndex(units.length-1);

        }

        /**

         * Returns the conversion factor from the <b>unit selected in the combo box</b>

         * to <b>meters</b> or <b>0</b> if pixels have been selected as the size unit.

         * @return

         */

        public double getUnitConversionFactor() {

                        double unitFactor;

                        try {

                                unitFactor = Attributes.CHANGE[getSelectedIndex()]/100;

                        } catch (ArrayIndexOutOfBoundsException aioobEx) { //jijiji

                                unitFactor = 0; // which represents size in pixel

                        }

                        return unitFactor;

        }

        /**

         * the use of this method is not allowed in this combo box.

         * @deprecated

         */

        public void addItem(Object anObject) {

                throw new Error("Operation not allowed");

        }

        /**

         * the use of this method is not allowed for this combo box.

         * @deprecated

         */

        public void removeAllItems() {

                throw new Error("Operation not allowed");

        }

}