import java.applet.*;
import java.awt.*;
import javax.swing.JFrame;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.text.*;
import java.text.*;
import java.util.Hashtable;
import java.beans.PropertyChangeListener;
import java.beans.PropertyChangeEvent;
import javax.swing.JComponent;

//this is new and improved totally general array-pattern-generator applet
//with good layout.

//something is wrong with:
//layout
//updating from the text fields
//--maybe give them separate classes like the sliders have.

public class MApplet extends JApplet {

    double a, b, lowfa, lowfb, phi, fmult;
    int n, xp, yp;

    JLabel aLabel;
    JLabel bLabel;
    JLabel nLabel;
    JLabel xpLabel;
    JLabel ypLabel;
    JLabel fLabel;
    JLabel phiLabel;

    JSlider freqslider;
    JSlider phislider;

    JFormattedTextField aField;
    JFormattedTextField bField;
    JFormattedTextField nField;
    JFormattedTextField xpField;
    JFormattedTextField ypField;

    NumberFormat aFormat;
    NumberFormat bFormat;
    NumberFormat nFormat;
    NumberFormat xpFormat;
    NumberFormat ypFormat;

    JPanel fieldpane;
    JPanel labelpane;

    Box controlarea;
    Box fieldandlabelarea;
 
    Hashtable fTable;
    Hashtable phiTable;
    
    Container contentPane;

    JButton updateButton;
    ActionListener buttonListener;

    MPaintPanel graph;

    //add a button that circumvents my changelistener issues.

    public void init(){

	aFormat = NumberFormat.getNumberInstance();
	bFormat = NumberFormat.getNumberInstance();
	nFormat = NumberFormat.getNumberInstance();
	xpFormat = NumberFormat.getNumberInstance();
	ypFormat = NumberFormat.getNumberInstance();

	contentPane = getContentPane();

	updateButton = new JButton("Update quantities");
	updateButton.setVerticalTextPosition(AbstractButton.CENTER);
	updateButton.setHorizontalTextPosition(AbstractButton.CENTER);
	updateButton.addActionListener(buttonListener);
	updateButton.setActionCommand("update");

	lowfa = 40;
	lowfb = 40;
	aLabel = new JLabel("plate x dimension at lowest freq: ");
	bLabel = new JLabel("plate y dimension at lowest freq: ");
	aField = new JFormattedTextField(aFormat);
	bField = new JFormattedTextField(bFormat);
	aField.setValue(new Double(lowfa));
	bField.setValue(new Double(lowfb));
	aField.setColumns(5);
	bField.setColumns(5);
	//let there be text fields for a and b.
	

	freqslider=new JSlider(100, 25000, 100);  //multiplier on lowest freq
	fLabel = new JLabel("frequency, in multiples of lowest frequency: ");
	fmult=1;
	fTable = new Hashtable();
	fTable.put(new Integer(100), new JLabel("1"));
	fTable.put(new Integer(5000), new JLabel("50"));
	fTable.put(new Integer(10000), new JLabel("100"));
	fTable.put(new Integer(15000), new JLabel("150"));
	fTable.put(new Integer(20000), new JLabel("200"));
	fTable.put(new Integer(25000), new JLabel("250"));
	freqslider.setLabelTable(fTable);
	freqslider.addChangeListener(new SListener());
	freqslider.setPaintLabels(true);
	a=fmult*lowfa;
	b=fmult*lowfb;
	
	phislider=new JSlider(0, 628, 0);
	phiLabel = new JLabel("azimuthal angle");
	phiTable = new Hashtable();
	phiTable.put(new Integer(0), new JLabel(""+0));
	phiTable.put(new Integer(157), new JLabel("0.5 PI"));
	phiTable.put(new Integer(314), new JLabel("1.0 PI"));
	phiTable.put(new Integer(471), new JLabel("1.5 PI"));
	phiTable.put(new Integer(628), new JLabel("2.0 PI"));
	phislider.setLabelTable(phiTable);
	phislider.setPaintLabels(true);
	phislider.addChangeListener(new PListener());
	phi=0;
	
	n=50;
	//elements per plate: text field
	nLabel = new JLabel("number of elements per plate");
	nField = new JFormattedTextField(nFormat);
	nField.setValue(new Integer(n));
	nField.setColumns(3);
	
	xp=2;
	yp=2;
	//this is an xp by yp array of plates.  text fields.
	xpLabel = new JLabel("number of columns in plate array");
	ypLabel = new JLabel("number of rows in plate array");
	xpField = new JFormattedTextField(xpFormat);
	ypField = new JFormattedTextField(ypFormat);
	xpField.setValue(new Integer(xp));
	ypField.setValue(new Integer(yp));
	xpField.setColumns(5);
	ypField.setColumns(5);

	graph = new MPaintPanel(a, b, phi, n, xp, yp);
	
	
	BoxLayout contentLayout = new BoxLayout(contentPane, 
						BoxLayout.PAGE_AXIS);
	controlarea = new Box(BoxLayout.PAGE_AXIS);
	fieldandlabelarea=new Box(BoxLayout.LINE_AXIS);

	labelpane = new JPanel(new GridLayout(0,1));
	labelpane.add(aLabel);
	labelpane.add(bLabel);
	labelpane.add(nLabel);
	labelpane.add(xpLabel);
	labelpane.add(ypLabel);
	
	fieldpane = new JPanel(new GridLayout(0,1));
	fieldpane.add(aField);
	fieldpane.add(bField);
	fieldpane.add(nField);
	fieldpane.add(xpField);
	fieldpane.add(ypField);

	fieldandlabelarea.add(labelpane);
	fieldandlabelarea.add(fieldpane);
	fieldandlabelarea.add(updateButton);

	controlarea.add(fLabel);
	controlarea.add(freqslider);
	controlarea.add(phiLabel);
	controlarea.add(phislider);
	controlarea.add(fieldandlabelarea);
	
	contentPane.setLayout(contentLayout);
	contentPane.add(graph);
	contentPane.add(controlarea);
    }

    class SListener implements ChangeListener{
	
	public void stateChanged(ChangeEvent e){
	    JSlider source = (JSlider)e.getSource();
	    fmult=(double)source.getValue()/100.0;
	    a=lowfa*fmult;
	    b=lowfb*fmult;
	    graph.update(a, b, phi, n, xp, yp);
	}
    }

    class PListener implements ChangeListener{

	public void stateChanged(ChangeEvent e){
	    JSlider source = (JSlider)e.getSource();
	    phi = (double)source.getValue()/100.0;
	    graph.update(a, b, phi, n, xp, yp);
	}
    }

    public void actionPerformed(ActionEvent e){
	lowfa=((Number)aField.getValue()).doubleValue();
	lowfb=((Number)bField.getValue()).doubleValue();
	a=fmult*lowfa;
	b=fmult*lowfb;
	n=((Number)nField.getValue()).intValue();
	xp=((Number)xpField.getValue()).intValue();
	yp=((Number)ypField.getValue()).intValue();
	graph.update(a, b, phi, n, xp, yp);
	System.out.println("quantities updated: a="+a+" b="+b+" n="+n+" xp="+xp+" yp="+yp);
    }
}