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

public class SineParameters extends NumericDialPanel
                         implements PropertyChangeListener {

protected double amplitude, frequency, phase;

protected static NDPDialDescriptor[] descs = new NDPDialDescriptor[3];

static {
	descs[0] = new NDPDialDescriptor("Amplitude", 60, 0.0, 100.0);
	descs[1] = new NDPDialDescriptor("Frequency", 60, 1.0,   4.0);
	descs[2] = new NDPDialDescriptor("Phase"	, 60);
}
//-------------------------------------------------------------------
// SineParameters Constructor
//-------------------------------------------------------------------
public SineParameters(double amplitude, double frequency, double phase) {
	this("Sine Parameters", amplitude, frequency, phase);
}
public SineParameters(String title,
					  double amplitude, double frequency, double phase) {
	super(title, descs);

	this.amplitude = amplitude;
	this.frequency = frequency;
	this.phase	   = phase;

	setSineParameters(this);

	addPropertyChangeListener(this);	// listen to NumericDialPanel
}
//-------------------------------------------------------------------
// Bulk Setter sets all parameters atomically.
//-------------------------------------------------------------------
public void setSineParameters(SineParameters params) {

	amplitude = params.amplitude;
	frequency = params.frequency;
	phase	  = params.phase;

	dials[0].setValue(amplitude);
	dials[1].setValue(frequency);
	dials[2].setValue(phase);
}
//-------------------------------------------------------------------
// Getters allow individual access to each parameter.
//-------------------------------------------------------------------
public final double getAmplitude() {
	return amplitude;
}
public final double getFrequency() {
	return frequency;
}
public final double getPhase() {
	return phase;
}
//-------------------------------------------------------------------
// PropertyChangeListener interface method
// A SineParameters object listens to all PC events fired by the underlying
// NumericDialPanel. This passes through NumericDial PC events directly.
//-------------------------------------------------------------------
public void propertyChange(PropertyChangeEvent pcEvent) {

	String dial = pcEvent.getPropertyName();
	double val  = ((Double)pcEvent.getNewValue()).doubleValue();

	// if ( dial.equals("Amplitude") ) {
	if ( dial.charAt(0) == 'A' ) {
		amplitude = val;
	} else

	// if ( dial.equals("Frequency") ) {
	if ( dial.charAt(0) == 'F' ) {
		frequency = val;
	} else

	// if ( dial.equals("Phase") ) {
	if ( dial.charAt(0) == 'P' ) {
		phase = val;
	} else {
		DebugSupport._assert(false,
		"PropChange Event from uknown origin! " + dial);
	}
}
//-------------------------------------------------------------------
// Overridden Object.toString()
//-------------------------------------------------------------------
public String toString() {
	return "SineParameters("+amplitude+", "+frequency+", "+phase+")";
}
//-------------------------------------------------------------------
// SineParameters self-test.
//-------------------------------------------------------------------
public static void main (String[] args) {
Frame window = new Frame("SineParameters Self-Test");
SineParameters sineParams = new SineParameters(50.0, 2.0, 45.0);

	window.setLayout(new FlowLayout());
	window.add(sineParams);

	window.pack();
	window.setVisible(true);
}
} // End of Class SineParameters