import java.util.Arrays;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

class GUI extends JFrame {
    private NameRestock inventory;
//    private int currentProdno = 0;
    private JTextField jtfprdItem; //1      
    private JTextField jtfprdName; //2      
    private JTextField jtfprdUnit; //3
    private JTextField jtfprdPrice;//4
    private JTextField jtfTotal;   //5   getresult()
    private JTextField jtfReStock; //6   getrestock()
    private JTextField jtfstrCName;//7        
    private JTextField jtfinvTotal;//8        
    private JButton btnNext;            
    
    GUI(NameRestock inventory) {
        super("Inventory Part 4 Program");
        //this.inventory = inventory;
        
        JPanel jp;
        JLabel jl;
        JPanel outerPanel = new JPanel();
        outerPanel.setLayout(new BoxLayout(outerPanel, BoxLayout.Y_AXIS));

        JPanel titlePanel = new JPanel();
        titlePanel.setLayout(new FlowLayout(FlowLayout.CENTER));
        jl = new JLabel("Inventory Part 4");
        titlePanel.add(jl);
        outerPanel.add(titlePanel);

        JPanel numberPanel = new JPanel();
        numberPanel.setLayout(new FlowLayout(FlowLayout.LEFT));
        jl = new JLabel("   Number: " );        
        numberPanel.add(jl);
        jtfprdItem = new JTextField (1);
        jtfprdItem.setEditable(false);
        numberPanel.add(jtfprdItem);
        outerPanel.add(numberPanel);
        
        JPanel number1Panel = new JPanel();
        number1Panel.setLayout(new FlowLayout(FlowLayout.LEFT));
        jl = new JLabel("   Name: " );        
        number1Panel.add(jl);
        jtfprdName = new JTextField (2);
        jtfprdName.setEditable(false);
        number1Panel.add(jtfprdName);
        outerPanel.add(number1Panel);
        
        JPanel number2Panel = new JPanel();
        number2Panel.setLayout(new FlowLayout(FlowLayout.LEFT));
        jl = new JLabel("   Units: " );        
        number2Panel.add(jl);
        jtfprdUnit = new JTextField(3);    
        jtfprdUnit.setEditable(false);    
        number2Panel.add(jtfprdUnit);      
        outerPanel.add(number2Panel);
        
        JPanel number3Panel = new JPanel();
        number3Panel.setLayout(new FlowLayout(FlowLayout.LEFT));
        jl = new JLabel("   Price: " );        
        number3Panel.add(jl);
        jtfprdPrice = new JTextField(4);    
        jtfprdPrice.setEditable(false);  
        number3Panel.add(jtfprdPrice);      
        outerPanel.add(number3Panel);
        
        JPanel number4Panel = new JPanel();
        number4Panel.setLayout(new FlowLayout(FlowLayout.LEFT));
        jl = new JLabel("   Total: $ " );        
        number4Panel.add(jl);
        jtfTotal = new JTextField(5);
        jtfTotal.setEditable(false);
        number4Panel.add(jtfTotal);
        outerPanel.add(number4Panel);
        
        JPanel number5Panel = new JPanel();
        number5Panel.setLayout(new FlowLayout(FlowLayout.LEFT));
        jl = new JLabel("Restocking Fee: $ " );        
        number5Panel.add(jl);
        jtfReStock = new JTextField(6);
        jtfReStock.setEditable(false);
        number5Panel.add(jtfReStock);
        outerPanel.add(number5Panel);

        JPanel number6Panel = new JPanel();
        number5Panel.setLayout(new FlowLayout(FlowLayout.LEFT));
        jl = new JLabel("Restocking Fee: $ " );        
        number5Panel.add(jl);
        jtfstrCName = new JTextField(7);
        jtfstrCName.setEditable(false);
        number5Panel.add(jtfstrCName);
        outerPanel.add(number6Panel);
        
        JPanel number7Panel = new JPanel();
        number6Panel.setLayout(new FlowLayout(FlowLayout.CENTER));
        jl = new JLabel("Total Invenory Value: $" );
        number6Panel.add(jl);
        jtfTotal = new JTextField(8);
        jtfTotal.setEditable(false);
        outerPanel.add(number7Panel);
        
        JPanel jpButtons = new JPanel();
        JButton jbNext = new JButton("Next");
        jbNext.addActionListener(new NextButtonHandler());
        jpButtons.add(jbNext);
        outerPanel.add(jpButtons);

        updateFields();                    
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setBounds(160, 120, 400, 300);

        setContentPane(outerPanel);
        setResizable(false);
        setVisible(true);
      
      }

        public void updateFields() {
        NameRestock aryProd = (NameRestock) inventory.getnumItem(currentProdno);
        jtfprdItem.setText(String.format("%s", inventory.getnumItem()));
        jtfprdName.setText(String.format("%s", inventory.getstrName()));
        jtfprdUnit.setText(String.format("%s", inventory.getnumUnit()));
        jtfprdPrice.setText(String.format("%.2f", inventory.getnumPrice()));
        jtfTotal.setText(String.format("%.2f", inventory.getResult()));
        jtfReStock.setText(String.format("%.2f", inventory.getRestock()));
        jtfstrCName.setText(String.format("%s", inventory.getstrCName()));
        //jtfinvTotal.setText(String.format("%.2f", inventory.getstrCName()));
    } // end updateFields()

    class NextButtonHandler implements ActionListener {
        public void actionPerformed(ActionEvent event) {
//            ++currentProdno;
            updateFields();
        }
    }

} // end GUI class

//NameRestock.java
public class NameRestock extends Product
{          
      //the NameReStock subclass adds one field      
      public String strCName;

      // the NameRestock sublass has one Constructor
      public NameRestock(int prdItem, String prdName, int prdUnit, double prdPrice, String newName)
      {
         super(prdItem, prdName, prdUnit, prdPrice);
         strCName = newName;
         getstrCName();
          
      } //end four-argument constructor

      //the NameRestock subclass adds one method
      public void setName(String newName)
      {
         strCName = newName;
      }

      public String getstrCName()
      {
         return strCName;
      }


     //get getRestock
      public double getRestock()
      {
         return ((numPrice * numUnit) + ((numPrice * numUnit) * .05));

      } //end method getRestock

      //get results
      public double getResult()
      {
         return numPrice * numUnit;
      } //end method getResult


      // toString returns result to string
      public String toString()
      {
        
         return String.format("%-6d %-18s %-5d $%-6.2f $%-8.2f $%-10.2f %s",
                             numItem, strName, numUnit, numPrice, getResult(),getRestock(),getstrCName());
                    
      } // end method toString


      // set numItem
      public void setnumItem(int prdItem)
      {
         numItem = prdItem;
      } //end method set numItem


      //get numItem
      public int getnumItem()
      {
         return numItem;
      } //end method get numItem

} // end of NameRestock class