import java.awt.*;
import java.applet.*;
import java.net.URL;
//***********************************************************************************
/** Starts Control
*/
//***********************************************************************************

public class startControl extends Applet {

/** true if window showing */   
        public boolean showing=false;
        private Control win;
        private Label l1;
        private Button b1;
        private String loading = "Please wait...loading!";
        private String startApp= "Click here to start application: ";
        private String stopApp=  "Click here to stop application: ";
        public boolean inputParameters=false;
        public String[] parameterBoxes;
        public String[] variableBoxes;
        public int nParameters;
        public int nVariables;
        public int function;
        public int controlVariable;
        public double change;
        public int period;
        public int speed;        
/** location of marker.txt */        
        URL documentBase;
        
        public void init() {
            if(getFromApplet("setParameters","False").equals("True")) inputParameters=true;
            if(inputParameters) getAllParameters();        
            setLayout(new FlowLayout(FlowLayout.CENTER));
            l1 = new Label(startApp);
            add(l1);
            b1 = new Button("Start");
            add(b1);
            documentBase = getCodeBase();
            
        }
        
        public void showWindow() {
                b1.disable();
                l1.setText(loading);
                win = new Control (this, documentBase);
                win.setTitle(" Controlling Chaos ");
//                win.setBackground(Color.white);
                win.resize(640,480);
                win.show();
                showing=true;
                b1.setLabel("Stop");
                b1.enable();
                l1.setText(stopApp);            
        }
        
        public void hideWindow() {
                win.movieStop();
                win.dispose();
                b1.setLabel("Start");
                l1.setText(startApp);
                showing=false;        
        }
/**********************************************************************/
      
      public boolean action(Event evt, Object arg) {
        if(evt.target instanceof Button) {
//            System.out.println("Button down");
//            System.out.println("Showing = " + showing);
            if(showing) {
                 hideWindow();
            }
            else {
                 showWindow();
            }
            return true;
       }
       else return false;          
    } 
    
    protected String getFromApplet(String parameter, String s) {
        String getString = getParameter(parameter);
        if(getString == null) return s;
        else if(getString.length() == 0) return s;
        else return getString;
    } 
    
    protected void getAllParameters() {
            int i,j;
            nParameters=(new Integer(getFromApplet("nParameters","0"))).intValue();
            nVariables=(new Integer(getFromApplet("nVariables","0"))).intValue();
            function=(new Integer(getFromApplet("function","0"))).intValue();
            parameterBoxes = new String[nParameters];
            variableBoxes = new String[nVariables];
            for(i=0;i<nParameters;i++) {
                  parameterBoxes[i]=getFromApplet("parameter"+i,"");
//                  System.out.println(parameterBoxes[i]);
            } 
            for(i=0;i<nVariables;i++) {
                  variableBoxes[i]=getFromApplet("variable"+i,"");
//                  System.out.println(variableBoxes[i]);
            }
            change=(new Double(getFromApplet("change","0.01"))).doubleValue();;
            controlVariable=(new Integer(getFromApplet("control","0"))).intValue();
            period=(new Integer(getFromApplet("period","1"))).intValue(); 
            speed=(new Integer(getFromApplet("speed","8"))).intValue();               
    }         
            
       
}

/**********************************************************************/
/**********************************************************************/