MainWindow.java

package auctionsniper.ui;

import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.text.NumberFormat;

import javax.swing.JButton;
import javax.swing.JFormattedTextField;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JTextField;

import auctionsniper.UserRequestListener;
import auctionsniper.SniperPortfolio;
import auctionsniper.UserRequestListener.Item;
import auctionsniper.util.Announcer;


public class MainWindow extends JFrame { 
  public static final String APPLICATION_TITLE = "Auction Sniper";
  private static final String SNIPERS_TABLE_NAME = "Snipers Table";
  public static final String MAIN_WINDOW_NAME = "Auction Sniper Main";
  public static final String NEW_ITEM_ID_NAME = "item id";
  public static final String JOIN_BUTTON_NAME = "join button";
  public static final String NEW_ITEM_STOP_PRICE_NAME = "stop price";
  
  private final Announcer<UserRequestListener> userRequests = Announcer.to(UserRequestListener.class); 

  
  public MainWindow(SniperPortfolio portfolio){ 
    super("Auction Sniper"); 
    setName(MainWindow.MAIN_WINDOW_NAME); 
    fillContentPane(makeSnipersTable(portfolio), makeControls());
    pack(); 
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 
    setVisible(true); 
  } 
  
  public void addUserRequestListener(UserRequestListener userRequestListener) {
    userRequests.addListener(userRequestListener); 
  } 

  private void fillContentPane(JTable snipersTable, JPanel controls) { 
    final Container contentPane = getContentPane(); 
    contentPane.setLayout(new BorderLayout()); 
    contentPane.add(controls, BorderLayout.NORTH); 
    contentPane.add(new JScrollPane(snipersTable), BorderLayout.CENTER); 
  } 
  
  private JPanel makeControls() { 
    final JTextField itemIdField = itemIdField();
    final JFormattedTextField stopPriceField = stopPriceField();

    JPanel controls = new JPanel(new FlowLayout()); 
    controls.add(itemIdField); 
    controls.add(stopPriceField);

    JButton joinAuctionButton = new JButton("Join Auction"); 
    joinAuctionButton.setName(JOIN_BUTTON_NAME); 
    
    joinAuctionButton.addActionListener(new ActionListener() { 
      public void actionPerformed(ActionEvent e) { 
        userRequests.announce().joinAuction(new Item(itemId(), stopPrice())); 
      } 
      private String itemId() {
        return itemIdField.getText();
      }
      private int stopPrice() { 
        return ((Number)stopPriceField.getValue()).intValue(); 
      } 
    }); 
    controls.add(joinAuctionButton); 
    
    return controls; 
  } 

  private JTextField itemIdField() {
    JTextField itemIdField = new JTextField();
    itemIdField.setColumns(10);
    itemIdField.setName(NEW_ITEM_ID_NAME);
    return itemIdField;
  }

  private JFormattedTextField stopPriceField() {
    JFormattedTextField stopPriceField = new JFormattedTextField(NumberFormat.getIntegerInstance());
    stopPriceField.setColumns(7);
    stopPriceField.setName(NEW_ITEM_STOP_PRICE_NAME);
    return stopPriceField;
  }

  private JTable makeSnipersTable(SniperPortfolio portfolio) { 
    SnipersTableModel model = new SnipersTableModel();
    portfolio.addPortfolioListener(model);
    JTable snipersTable = new JTable(model); 
    snipersTable.setName(SNIPERS_TABLE_NAME); 
    return snipersTable; 
  }

}