import java.awt.*;

public class Controls extends java.awt.Panel{

// Builds up user interface panel

private Label coupling;
private Label descrip;
private Scrollbar myscroll;
private Button start,stop;
private Ising appletref;

// Constructor for Controls

Controls(Ising ref){
coupling = new Label("0.00");
descrip = new Label("Inv. Temp");
myscroll = new Scrollbar(Scrollbar.HORIZONTAL,0,0,0,100);
start = new Button("Resume");
stop = new Button("Pause");

add(descrip);
add(coupling);
add(myscroll);
add(start);
add(stop); 

setBackground(Color.pink);
appletref = ref;
}

// Override handleEvent() to process scrollbar changes

public boolean handleEvent(Event evt){
if(evt.target instanceof Scrollbar){
int v = ((Scrollbar)evt.target).getValue();

// propagate the new coupling to the simulation object

appletref.simulation.beta=(double)v/100.0;

// change it on screen

coupling.setText(String.valueOf((double)v/100.0));
return true;}
else 

return super.handleEvent(evt);
}

// Watch for button clicks and suspend/resume simulation thread
// accordingly

public boolean action(Event evt, Object arg){
if(evt.target instanceof Button){
if(arg.equals("Pause")) appletref.runner.suspend();
else if(arg.equals("Resume")) appletref.runner.resume();
return true;}

else return false;
}

}