import java.awt.*;

public class Controls extends java.awt.Panel{

// Builds up user interface panel

private Button start,stop;
private Label v;
private TextField totalE;
private Simulation simref;
private Earthquake appletref;

// Constructor for Controls

Controls(Earthquake ref0, Simulation  ref){
start = new Button("Go");
stop = new Button("Pause");
v= new Label("Total Energy = ");
totalE = new TextField("0.0",6);
add(start);
add(stop);
add(v);
add(totalE);
setBackground(Color.yellow);
simref=ref;
appletref=ref0;
}

private double myformat(double x, int n){
double d;
int i;
d=x*n;
i=(int)d;
d=(double)i/(double)n;
return(d);
}


public void addToBox(double te){
totalE.setText(String.valueOf(myformat(te,10000)));
}


// Watch for button clicks and suspend/resume simulation thread
// accordingly
// also text box stuff

public boolean action(Event evt, Object arg){
double dx;

if(evt.target instanceof Button){
if(arg.equals("Pause")) appletref.runner.suspend();
else if(arg.equals("Go")) appletref.runner.resume();
return true;
}


return false;
}



}