nothingfancy

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.

    String colorNames[] = {"Red", "Green", "Blue"};
    Color colors[] = {Color.RED, Color.GREEN, Color.BLUE};

    private void cbxColorActionPerformed(java.awt.event.ActionEvent evt) {
    // TODO add your handling code here:
          circle1.setColor(colors[cbxColor.getSelectedIndex()]);
    }

    public BoundPropertyDemoForm() {
        initComponents();
        // Регистрация на слушатели на събитията за компонентите
        circle1.addPropertyChangeListener(square1);
        square1.addPropertyChangeListener(triangle1);
        square1.addPropertyChangeListener(newBean1);
        newBean1.addPropertyChangeListener(newBean2);
    }

 */
package my.boundproperty;

import java.awt.Canvas;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics;
import java.beans.*;

/**
 *
 * @author lmn7
 */
public class NewBean extends Canvas implements PropertyChangeListener {

    private Color color;

    private final PropertyChangeSupport propertySupport;

    public NewBean() {
        setSize(50, 50);
        color = Color.CYAN;
        propertySupport = new PropertyChangeSupport(this);
    }

    public Color getColor() {
        return this.color;
    }

    @Override
    public void addPropertyChangeListener(PropertyChangeListener listener) {
        propertySupport.addPropertyChangeListener(listener);
    }

    @Override
    public void removePropertyChangeListener(PropertyChangeListener listener) {
        propertySupport.removePropertyChangeListener(listener);
    }

    @Override
    public void propertyChange(PropertyChangeEvent evt) {
        setColor((Color) evt.getNewValue());
    }

    public void setColor(Color color) {
        Color oldValue = this.color;
        this.color = color;
        propertySupport.firePropertyChange("color", oldValue, color);
        repaint();
    }

    public void paint(Graphics g) {
        Dimension d = getSize();
        g.setColor(color);
        g.fillOval(0, 0, d.width, d.height - 1);
    }
}