// Written by Dr. Deborah Hwang for CS 350 // Pizza Parlor Order Form Java application import javax.swing.*; import java.awt.*; import java.awt.event.*; public class PizzaApp1 extends JPanel // application is a JPanel { // The components that are named for entire application JFrame frame; // outer frame JTextField nameField; JTextArea addressField; JTextArea debugArea; JRadioButton[] sizeButtons; JCheckBox[] toppingsBoxes; final int numButtons = 4; final int numBoxes = 6; public PizzaApp1 (JFrame frame) // constructor { // initialize layout manager using superclass constructor // super class construction must always be first super (new BorderLayout()); this.frame = frame; // Create the components // Create title label with HTML decorated text JLabel title = new JLabel ("" + "Purple Pizza Parlor", JLabel.CENTER); // Pad the title on top and bottom title.setBorder(BorderFactory.createEmptyBorder(10,0,10,0)); // Create other panels JPanel namePanel = createNamePanel(); JPanel addressPanel = createAddressPanel(); JPanel sizePanel = createSizePanel(); JPanel toppingsPanel = createToppingsPanel(); JPanel buttonPanel = createButtonPanel(); // Create options panel with sizes and toppings JPanel optionsPanel = new JPanel(); optionsPanel.add (sizePanel); optionsPanel.add (toppingsPanel); // Create center panel in a horizontal column JPanel centerPanel = new JPanel(); centerPanel.setLayout (new BoxLayout (centerPanel, BoxLayout.PAGE_AXIS)); centerPanel.add (namePanel); centerPanel.add (addressPanel); centerPanel.add (optionsPanel); centerPanel.add (buttonPanel); // Create the debug area at bottom with vertical scrollbar debugArea = new JTextArea ("The status of your order is:\n", 10, 40); JScrollPane debugScrollPane = new JScrollPane ( debugArea, JScrollPane.VERTICAL_SCROLLBAR_ALWAYS, JScrollPane.HORIZONTAL_SCROLLBAR_NEVER); debugArea.setEditable (false); // Lay out the main panel add (title, BorderLayout.PAGE_START); add (centerPanel, BorderLayout.CENTER); add (debugScrollPane, BorderLayout.PAGE_END); } // end constructor private JPanel createNamePanel () { JPanel panel = new JPanel (); nameField = new JTextField(20); panel.add (new JLabel ("Name: ")); panel.add (nameField); return panel; } // end createNamePanel private JPanel createAddressPanel () { JPanel panel = new JPanel (); addressField = new JTextArea(3, 20); panel.add (new JLabel ("Address: ")); panel.add (addressField); return panel; } // end createAddressPanel private JPanel createSizePanel () { JPanel panel = new JPanel(new GridLayout(0,1)); final String[] sizes = {"Small", "Medium", "Large", "Extra Large"}; ButtonGroup sizeButtonGroup = new ButtonGroup(); // create button group sizeButtons = new JRadioButton[numButtons]; // Create an action listener ActionListener radioListener = new ActionListener() // anonymous inner class { public void actionPerformed (ActionEvent e) // handler { String size = e.getActionCommand(); debugArea.append (size + " has been chosen.\n"); debugArea.setCaretPosition( debugArea.getDocument().getLength()); } // end actionPerformed }; // end ActionListener for (int i = 0; i < numButtons; i++) { // Create radio button and add it to button group and panel sizeButtons[i] = new JRadioButton (sizes[i]); sizeButtonGroup.add (sizeButtons[i]); panel.add(sizeButtons[i]); // Set action command (for clicks) // and add the listener to each button sizeButtons[i].setActionCommand(sizes[i]); sizeButtons[i].addActionListener(radioListener); } // end for // Make Large the default choice sizeButtons[2].setSelected(true); // Add compound border around panel panel.setBorder(BorderFactory.createCompoundBorder( BorderFactory.createTitledBorder("Choose one:"), BorderFactory.createEmptyBorder(5,5,5,5))); return panel; } // end createSizePanel private JPanel createToppingsPanel() { JPanel panel = new JPanel (new GridLayout(0,1)); final String[] toppings = {"Italian Sausage", "Hamburger", "Pepperoni", "Onions", "Green Peppers", "Mushrooms"}; toppingsBoxes = new JCheckBox[numBoxes]; // Create an item listener ItemListener boxListener = new ItemListener () // anonymous inner class { public void itemStateChanged (ItemEvent e) // handler { for (int i = 0; i < numBoxes; i++) { Object source = e.getItemSelectable(); if (source == toppingsBoxes[i]) { String text = toppings[i] + " was "; if (e.getStateChange() == ItemEvent.DESELECTED) text = text + "unchecked.\n"; else text = text + "checked.\n"; debugArea.append (text); debugArea.setCaretPosition( debugArea.getDocument().getLength()); break; } // end if } // end for } // end itemStateChanged }; // end ItemListener for (int i = 0; i < numBoxes; i++) { // Create checkbox and add it to panel toppingsBoxes[i] = new JCheckBox (toppings[i]); panel.add (toppingsBoxes[i]); // Add the listener to each box toppingsBoxes[i].addItemListener (boxListener); } // end for // Add compound border around panel panel.setBorder(BorderFactory.createCompoundBorder( BorderFactory.createTitledBorder("Choose from:"), BorderFactory.createEmptyBorder(5,5,5,5))); return panel; } // end createSizePanel private JPanel createButtonPanel() { JPanel panel = new JPanel(); // default layout is FlowLayout JButton submit = new JButton ("Submit"); JButton reset = new JButton ("Reset"); JButton quit = new JButton ("Quit"); // Create an action listener ActionListener buttonListener = new ActionListener () // anonymous inner class { public void actionPerformed (ActionEvent e) // handler { String command = e.getActionCommand(); if (command == "Submit") { System.out.println ("Submit button has been pressed"); debugArea.append ("We'll pretend that something " + "interesting has happened...\n"); debugArea.setCaretPosition( debugArea.getDocument().getLength()); } // end Submit else if (command == "Reset") { System.out.println ("Reset button has been pressed"); nameField.setText (""); addressField.setText (""); for (int i = 0; i < numButtons; i++) sizeButtons[i].setSelected(false); sizeButtons[2].setSelected(true); for (int i = 0; i < numBoxes; i++) toppingsBoxes[i].setSelected(false); debugArea.setText ("The status of your order is:\n"); } // end Reset else if (command == "Quit") { System.out.println ("Quit button has been pressed"); System.exit(0); } // end Quit else System.out.println ("Unknown command"); } // end actionPerformed }; // end ActionListener // Set action command and add listener to each button submit.setActionCommand("Submit"); submit.addActionListener (buttonListener); reset.setActionCommand("Reset"); reset.addActionListener (buttonListener); quit.setActionCommand("Quit"); quit.addActionListener (buttonListener); // Set default button (when Enter is pressed) frame.getRootPane().setDefaultButton(submit); // Lay out panel panel.add (submit); panel.add (reset); panel.add (quit); return panel; } // end createButtonPanel // Every Swing application will have these two functions // Create the GUI and show it. For thread safety, this method should // be invoked from the event-dispatching thread. private static void createAndShowGUI() { // Make sure we have nice window decorations. JFrame.setDefaultLookAndFeelDecorated(true); // Create and set up the main window. JFrame frame = new JFrame("Purple Pizza Parlor Order Form"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); // Set up the main frame panel, // only the application itself is created and added frame.setLayout(new GridLayout(1,1)); frame.add(new PizzaApp1 (frame)); // Display the window. frame.pack(); frame.setVisible(true); } // createAndShowGUI public static void main(String[] args) { // Schedule a job for the event-dispatching thread: // creating and showing this application's GUI. javax.swing.SwingUtilities.invokeLater( new Runnable() // anonymous inner class { public void run() // from Runnable interface { createAndShowGUI(); } // end run }); // end new Runnable } // end main } // end PizzaApp1