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JCalendar is a Java date chooser bean for graphically picking a date. JCalendar is composed of several other Java beans, a JDayChooser, a JMonthChooser and a JYearChooser. All these beans have a locale property, provide several icons (Color 16x16, Color 32x32, Mono 16x16 and Mono 32x32) and their own locale property editor. So they can easily be used in GUI builders. Also part of the package is a JDateChooser, a bean composed of an IDateEditor (for direct date editing) and a button for opening a JCalendar for selecting the date.

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/*
 *  JYearChooser.java  - A bean for choosing a year
 *  Copyright (C) 2004 Kai Toedter
 *  [email protected]
 *  www.toedter.com
 *
 *  This program is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser 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 Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */
package com.toedter.calendar;

import com.toedter.components.JSpinField;

import java.util.Calendar;

import javax.swing.JFrame;


/**
 * JYearChooser is a bean for choosing a year.
 *
 * @version $LastChangedRevision: 85 $
 * @version $LastChangedDate: 2006-04-28 13:50:52 +0200 (Fr, 28 Apr 2006) $
 */
public class JYearChooser extends JSpinField {
	private static final long serialVersionUID = 2648810220491090064L;
	protected JDayChooser dayChooser;
    protected int oldYear;
    protected int startYear;
    protected int endYear;

    /**
     * Default JCalendar constructor.
     */
    public JYearChooser() {
        setName("JYearChooser");
        Calendar calendar = Calendar.getInstance();
        dayChooser = null;
        setMinimum(calendar.getMinimum(Calendar.YEAR));
        setMaximum(calendar.getMaximum(Calendar.YEAR));
        setValue(calendar.get(Calendar.YEAR));
    }

    /**
     * Sets the year. This is a bound property.
     *
     * @param y the new year
     *
     * @see #getYear
     */
    public void setYear(int y) {
        super.setValue(y, true, false);

        if (dayChooser != null) {
            dayChooser.setYear(value);
        }

        spinner.setValue(new Integer(value));
        firePropertyChange("year", oldYear, value);
        oldYear = value;
    }

    /**
     * Sets the year value.
     *
     * @param value the year value
     */
    public void setValue(int value) {
        setYear(value);
    }

    /**
     * Returns the year.
     *
     * @return the year
     */
    public int getYear() {
        return super.getValue();
    }

    /**
     * Convenience method set a day chooser that might be updated directly.
     *
     * @param dayChooser the day chooser
     */
    public void setDayChooser(JDayChooser dayChooser) {
        this.dayChooser = dayChooser;
    }

    /**
     * Returns the endy ear.
     *
     * @return the end year
     */
    public int getEndYear() {
        return getMaximum();
    }

    /**
     * Sets the end ear.
     *
     * @param endYear the end year
     */
    public void setEndYear(int endYear) {
        setMaximum(endYear);
    }

    /**
     * Returns the start year.
     *
     * @return the start year.
     */
    public int getStartYear() {
        return getMinimum();
    }

    /**
     * Sets the start year.
     *
     * @param startYear the start year
     */
    public void setStartYear(int startYear) {
        setMinimum(startYear);
    }

    /**
     * Creates a JFrame with a JYearChooser inside and can be used for testing.
     *
     * @param s command line arguments
     */
    static public void main(String[] s) {
        JFrame frame = new JFrame("JYearChooser");
        frame.getContentPane().add(new JYearChooser());
        frame.pack();
        frame.setVisible(true);
    }
}