import java.beans.*;
import java.awt.*;
import utilities.ConvertKit;

public class SineEditor extends	PropertyEditorSupport
					 implements PropertyChangeListener {

// the GUI that this custom property editor uses
protected SineParameters sineParams;

//-------------------------------------------------------------------
// SineEditor constructor
//-------------------------------------------------------------------
public SineEditor() {
	sineParams = new SineParameters(50.0, 1.0, 0.0);
	sineParams.addPropertyChangeListener(this);
}
//-------------------------------------------------------------------
// overridden PropertyEditor interface methods
//-------------------------------------------------------------------
public void setValue(Object value) {
	sineParams.setSineParameters((SineParameters)value);
}
public Object getValue() {
	return sineParams;
}
public boolean supportsCustomEditor() {		// yes we do !
	return true;
}
public Component getCustomEditor() {
	return sineParams;
}
public boolean isPaintable() {
	return true;
}
//-------------------------------------------------------------------
// paintValue() is called inside the tool's paint() method to repaint
// a property sheet window containing property values.
//-------------------------------------------------------------------
public void paintValue(Graphics g, Rectangle clipRect) {
Rectangle rect = clipRect;
int zeroLine = rect.height/2;

	g.translate(rect.x, rect.y);
	g.drawRect(0,0, rect.width-1, rect.height-1);

	double frequency = sineParams.getFrequency();
	double phase     = sineParams.getPhase();
	phase = ConvertKit.toRadians(phase);

	for (int x=2; x < rect.width-1; x+=2) {
		double phi = ((double)x) / rect.width*2*Math.PI;
		double sin = Math.sin(frequency*phi + phase);
		int y = zeroLine + (int)(sin*rect.height/2);
		g.drawLine(x-2,zeroLine, x,y);
	}
}
//-------------------------------------------------------------------
// PropertyChangeListener interface.
// Here we (the editor) receive notifications from the SineParameters that some
// sine function parameter has changed, so we pass this fact on to our own listener.
//-------------------------------------------------------------------
public void propertyChange(PropertyChangeEvent evt) {
	firePropertyChange();
}
} // End of Class SineEditor