/** InputPanel.java        Daryl Rauhala
 *  This file creates the GUI for the interaction of the user and the 
 *  data values of the Canvas in question. Here the fields are designed
 *  for the Henon attractor
 */

import java.awt.*;

class InputPanel extends Panel
{
     private TextField xMinField,yMinField,xMaxField,yMaxField,
                       xStartField,yStartField, iterationsField, 
                       aField, bField; 
 
     private double Xmin, Ymin, Xmax, Ymax, Xstart, Ystart, A, B;
     private int iterations;
     private Panel fields    = new Panel();
     private Panel main      = new Panel();
     private Button Reset, UserInput;     
     
      public InputPanel(double Xmax,double Ymax,double Xmin, double Ymin,
                        double Xstart,double Ystart, int iterations )
        {
            this.Xmin = Xmin;
            this.Ymin = Ymin;
            this.Xmax = Xmax;
            this.Ymax = Ymax;
            this.Xstart = Xstart;
            this.Ystart = Ystart;
            this.iterations = iterations;
            makeInterface();

         } // end of constructor with parameters

/** 
 * Default constructor with default values to start with
 */

public InputPanel()
        {
            this.Xmin   = -2;
            this.Ymin   = -0.75;
            this.Xmax   = 2;
            this.Ymax   = 0.5;
            this.Xstart = 0.1;
            this.Ystart = 0.2;
            this.A      = 1.4;
            this.B      = 0.3;
            iterations  = 10000;

            makeInterface();            

         } // end of constructor


public void setHenonDefaults() 
      {
            this.Xmin = -2;
            this.Ymin = -0.75;
            this.Xmax = 2;
            this.Ymax = 0.5;
            this.Xstart = 0.1;
            this.Ystart = 0.2;
            this.A      = 1.4;
            this.B      = 0.3;
            iterations = 10000;          
               
            xMinField.setText(Xmin+"");
            xMaxField.setText(Xmax+"");
            yMinField.setText(Ymin+"");
            yMaxField.setText(Ymax+"");

            xStartField.setText(Xstart+"");
            yStartField.setText(Ystart+"");
            aField.setText(A+"");
            bField.setText(B+"");
            iterationsField.setText(iterations+"");
      }

private void makeInterface()
       {
            
            fields.setLayout(new GridLayout(5,4,1,1));
  
            fields.add(new Label("xMin", Label.CENTER));
            xMinField = new TextField(Xmin+"", 8);
            fields.add(xMinField);

            fields.add(new Label("xMax", Label.CENTER));
            xMaxField = new TextField(Xmax+"", 8);
            fields.add(xMaxField);

            fields.add(new Label("yMin", Label.CENTER));
            yMinField = new TextField(Ymin+"", 8);
            fields.add(yMinField);

            fields.add(new Label("yMax", Label.CENTER));
            yMaxField = new TextField(Ymax+"", 8);
            fields.add(yMaxField);

            fields.add(new Label("xStart", Label.CENTER));
            xStartField = new TextField(Xstart+"", 8);
            fields.add(xStartField);

            fields.add(new Label("yStart", Label.CENTER));
            yStartField = new TextField(Ystart+"", 8);
            fields.add(yStartField);
 
            fields.add(new Label("Iterations", Label.CENTER));
            iterationsField = new TextField(iterations+"", 8);
            fields.add(iterationsField);

            fields.add(new Label("A", Label.CENTER));
            aField = new TextField(A+"", 8);
            fields.add(aField);

            fields.add(new Label("B", Label.CENTER));
            bField = new TextField(B+"", 8);
            fields.add(bField);

            main.setLayout ( new BorderLayout() );   
            main.add (fields, BorderLayout.CENTER );
           

            add( main );
  
       } // end of makeInterface()  


public void setFields(double Xmax, double Ymax, double Xmin, double Ymin,
            double Xstart, double Ystart, double a, double b, int iterations ) 
  {
   this.Xmin = Xmin;
   this.Ymin = Ymin;
   this.Xmax = Xmax;
   this.Ymax = Ymax;

   this.Xstart = Xstart;
   this.Ystart = Ystart;
   this.A      = a;
   this.B      = b;
   this.iterations = iterations;

   xMinField.setText(Xmin+"");
   xMaxField.setText(Xmax+"");
   yMinField.setText(Ymin+"");
   yMaxField.setText(Ymax+"");

   xStartField.setText(Xstart+"");
   yStartField.setText(Ystart+"");
   iterationsField.setText(iterations+""); 
  } // end of setFields 
  
/** 
 * Maybe add get methods to return the current values of the 
 * textfields to restart the PlotCanvas. Would have to do each 
 * fields individually to return the value.
 */  
   
public double getMaxX()
   {
    return Double.valueOf( xMaxField.getText() ).doubleValue(); 
   }
public double getMaxY()
   {
    return  Double.valueOf( yMaxField.getText() ).doubleValue(); 
   }
public double getMinX()
   {
    return Double.valueOf( xMinField.getText() ).doubleValue(); 
   }
public double getMinY()
   {
    return Double.valueOf( yMinField.getText() ).doubleValue(); 
   }
public double getStartX()
   {
     return Double.valueOf( xStartField.getText() ).doubleValue(); 
   }
public double getStartY()
   { 
     return Double.valueOf( yStartField.getText() ).doubleValue(); 
   }
public double getA()
   { 
     return Double.valueOf( aField.getText() ).doubleValue(); 
   }
public double getB()
   { 
     return Double.valueOf( bField.getText() ).doubleValue(); 
   }

public int getIterations()
   {
    return Integer.valueOf (iterationsField.getText() ).intValue();
   }

} // end of InputPanel