jyearchooser.java

一个demo是关于swing

/*
 *  JYearChooser.java  - A bean for choosing a year
 *  Copyright (C) 2004 Kai Toedter
 *  [e-mail]
 *  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.
 *
 * @author Kai Toedter
 * @version 1.2
 */
public class JYearChooser extends JSpinField {
    protected JDayChooser dayChooser;
    protected int startYear;
    protected int endYear;

    /**
     * Default JCalendar constructor.
     */
    public 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) {
        int oldYear = getValue();
        super.setValue(y, true, false);

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

        spinner.setValue(new Integer(value));
        firePropertyChange("year", 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 "JYearChooser".
     *
     * @return the name value
     */
    public String getName() {
        return "JYearChooser";
    }

    /**
     * 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);
    }
}