JButtonKnowsBgColor.java Source code

Introduction

Here is the source code for JButtonKnowsBgColor.java

Source

/*
 * Created on 17.12.2004
 *
 */

/*
This file is part of BORG.
    
BORG 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.
    
BORG 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 BORG; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
    
Copyright 2003 by Mike Berger
 */

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JColorChooser;
import javax.swing.JFrame;

/**
 * GUI control to easy choose foreground or background color.
 * Indicates color to be stored by its own foreground or background.
 * 
 * @author bsv
 * 
 */
public class JButtonKnowsBgColor extends JButton {
    // colorProperty is ONE color, but can be indicated by fore or back color
    protected Color colorProperty;
    // bg=true means "choosed color is background color"
    // bg=false means "choosed color is foreground color"
    protected boolean bg;

    public JButtonKnowsBgColor(String p_text, Color p_color, boolean p_bg) {
        setText(p_text);
        setColorProperty(p_color);
        setBg(p_bg);
        setColorByProperty();
        addActionListener(new ModalListener());

    }

    public void setColorByProperty() {
        if (isBg()) {
            setBackground(getColorProperty());
        } else {
            setForeground(getColorProperty());
        }
    }

    // for testing purposes only
    public static void main(String[] args) {
        JButtonKnowsBgColor jbkbc = new JButtonKnowsBgColor("choose back", Color.RED, true);
        JButtonKnowsBgColor jbkbc1 = new JButtonKnowsBgColor("choose fore", Color.BLUE, false);
        JFrame jf = new JFrame();
        jf.setLayout(new BorderLayout());
        jf.getContentPane().add(jbkbc, BorderLayout.NORTH);
        jf.getContentPane().add(jbkbc1, BorderLayout.CENTER);
        jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        jf.setSize(100, 200);
        jf.setVisible(true);
    }

    /**
     * @return Returns the color.
     */
    public Color getColorProperty() {
        return colorProperty;
    }

    /**
     * @param color The color to set.
     */
    public void setColorProperty(Color color) {
        this.colorProperty = color;
    }

    /**
     * @return Returns the bg.
     */
    protected boolean isBg() {
        return bg;
    }

    /**
     * @param bg The bg to set.
     */
    protected void setBg(boolean bg) {
        this.bg = bg;
    }

    private class ModalListener implements ActionListener {
        public void actionPerformed(ActionEvent event) {
            Color selected = JColorChooser.showDialog(null, isBg() ? "Set background" : "Set foreground",
                    getColorProperty());
            setColorProperty(selected);
            setColorByProperty();
        }
    }

}