/** * AddressBookGUI.java * * Copyright (c) 2000, 2001, 2005, 2006 - Russell C. Bjork * */ import java.awt.*; import java.awt.event.*; import javax.swing.*; import javax.swing.event.*; import java.io.IOException; /** An object of this class allows interaction between the program and the * human user. */ public class AddressBookGUI extends JFrame { /** Constructor * * @param controller the controller which performs operations in * response to user gestures on this GUI * @param addressBook the AddressBook this GUI displays */ public AddressBookGUI(final AddressBookController controller, AddressBook addressBook) { this.controller = controller; // Create and add file menu JMenuBar menuBar = new JMenuBar(); JMenu fileMenu = new JMenu("File"); newItem = new JMenuItem("New", 'N'); fileMenu.add(newItem); openItem = new JMenuItem("Open...", 'O'); fileMenu.add(openItem); fileMenu.addSeparator(); saveItem = new JMenuItem("Save", 'S'); fileMenu.add(saveItem); saveAsItem = new JMenuItem("Save As..."); fileMenu.add(saveAsItem); fileMenu.addSeparator(); printItem = new JMenuItem("Print", 'P'); fileMenu.add(printItem); fileMenu.addSeparator(); quitItem = new JMenuItem("Quit", 'Q'); fileMenu.add(quitItem); menuBar.add(fileMenu); setJMenuBar(menuBar); // Create and add components for the main window nameList = new JList(); nameList.setPrototypeCellValue("ABCDEFGHIJKLM, NOPQRSTUVWXYZ"); nameList.setVisibleRowCount(10); JScrollPane listPane = new JScrollPane(nameList); listPane.setBorder(BorderFactory.createCompoundBorder( BorderFactory.createEmptyBorder(10, 10, 10, 10), BorderFactory.createLineBorder(Color.gray, 1))); getContentPane().add(listPane, BorderLayout.CENTER); JPanel buttonPanel = new JPanel(); addButton = new JButton(" Add "); buttonPanel.add(addButton); editButton = new JButton(" Edit "); buttonPanel.add(editButton); deleteButton = new JButton(" Delete "); buttonPanel.add(deleteButton); sortByNameButton = new JButton("Sort by name"); buttonPanel.add(sortByNameButton); sortByZipButton = new JButton("Sort by ZIP "); buttonPanel.add(sortByZipButton); buttonPanel.setBorder(BorderFactory.createEmptyBorder(5, 10, 10, 10)); getContentPane().add(buttonPanel, BorderLayout.SOUTH); // Add the action listeners for the buttons, menu items, and close box, // and for double-clicking the list addButton.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { controller.doAdd(AddressBookGUI.this); // This will ensure that the person just added is visible in list int index = getAddressBook().size() - 1; nameList.invalidate(); nameList.ensureIndexIsVisible(index); saveItem.setEnabled(AddressBookGUI.this.addressBook. getChangedSinceLastSave()); } }); editButton.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { int index = nameList.getSelectedIndex(); if (index < 0) reportError("You must select a person"); else { controller.doEdit(AddressBookGUI.this, index); saveItem.setEnabled(AddressBookGUI.this.addressBook. getChangedSinceLastSave()); } } }); deleteButton.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { int index = nameList.getSelectedIndex(); if (index < 0) reportError("You must select a person"); else { controller.doDelete(AddressBookGUI.this, index); nameList.repaint(); saveItem.setEnabled(AddressBookGUI.this.addressBook. getChangedSinceLastSave()); } } }); sortByNameButton.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { controller.doSortByName(AddressBookGUI.this); nameList.repaint(); saveItem.setEnabled(AddressBookGUI.this.addressBook. getChangedSinceLastSave()); } }); sortByZipButton.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { controller.doSortByZip(AddressBookGUI.this); nameList.repaint(); saveItem.setEnabled(AddressBookGUI.this.addressBook. getChangedSinceLastSave()); } }); newItem.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { try { if (getAddressBook().getChangedSinceLastSave()) controller.doOfferSaveChanges(AddressBookGUI.this); controller.doNew(AddressBookGUI.this); } catch(IOException exception) { reportError("Problem writing the file: " + exception); } catch(InterruptedException exception) { // Thrown if user cancels a save or a file dialog - can be ignored } catch(SecurityException exception) { // Thrown if security manager disallows the operation - // will always happen in an applet reportError("Operation disallowed: " + exception); } } }); openItem.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { try { if (getAddressBook().getChangedSinceLastSave()) controller.doOfferSaveChanges(AddressBookGUI.this); controller.doOpen(AddressBookGUI.this); } catch(IOException exception) { reportError("Problem reading or writing the file: " + exception); } catch(InterruptedException exception) { // Thrown if user cancels a save or a file dialog - can be ignored } catch(SecurityException exception) { // Thrown if security manager disallows the operation - // will always happen in an applet reportError("Operation disallowed: " + exception); } catch(Exception exception) { // Any other case means the file did not contain an // address book reportError("This file did not contain an address book"); } } }); saveItem.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { try { controller.doSave(AddressBookGUI.this); saveItem.setEnabled(AddressBookGUI.this.addressBook. getChangedSinceLastSave()); } catch(IOException exception) { reportError("Problem writing the file: " + exception); } catch(InterruptedException exception) { // Thrown if user cancels a file dialog - can be ignored } catch(SecurityException exception) { // Thrown if security manager disallows the operation - // will always happen in an applet reportError("Operation disallowed: " + exception); } } }); saveAsItem.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { try { controller.doSaveAs(AddressBookGUI.this); saveItem.setEnabled(AddressBookGUI.this.addressBook. getChangedSinceLastSave()); } catch(IOException exception) { reportError("Problem writing the file: " + exception); } catch(InterruptedException exception) { // Thrown if user cancels a file dialog - can be ignored } catch(SecurityException exception) { // Thrown if security manager disallows the operation - // will always happen in an applet reportError("Operation disallowed: " + exception); } } }); printItem.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { controller.doPrint(AddressBookGUI.this); } }); quitItem.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { AddressBookApplication.quitApplication(); } }); setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE); addWindowListener(new WindowAdapter() { public void windowClosing(WindowEvent e) { try { if (getAddressBook().getChangedSinceLastSave()) controller.doOfferSaveChanges(AddressBookGUI.this); dispose(); if (Frame.getFrames().length == 0) AddressBookApplication.quitApplication(); } catch(IOException exception) { reportError("Problem writing the file: " + exception); } catch(InterruptedException exception) { // Thrown if user cancels a file dialog - can be ignored } catch(SecurityException exception) { // Thrown if security manager disallows the operation - // will always happen in an applet reportError("Operation disallowed: " + exception); } } }); // The following is adapted from an example in the documentation // for class JList. It invokes the controller's doEdit method // if the user double clicks a name. nameList.addMouseListener(new MouseAdapter() { public void mouseClicked(MouseEvent e) { if (e.getClickCount() == 2) { int index = nameList.locationToIndex(e.getPoint()); controller.doEdit(AddressBookGUI.this, index); } } }); setAddressBook(addressBook); pack(); } /** Accessor for the address book this GUI displays * * @return the current address book for this GUI */ public AddressBook getAddressBook() { return addressBook; } /** Mutator to change the address book this GUI displays * * @param addressBook the new address book for this GUI */ public void setAddressBook(AddressBook addressBook) { this.addressBook = addressBook; setTitle(addressBook.getTitle()); saveItem.setEnabled(addressBook.getChangedSinceLastSave()); nameList.setListData(addressBook); } /** Report an error to the user * * @param message the message to display */ public void reportError(String message) { JOptionPane.showMessageDialog(this, message, "Error message", JOptionPane.ERROR_MESSAGE); } // The controller that performs operations in response to user gestures private AddressBookController controller; // The address book this GUI displays / operates on private AddressBook addressBook; // GUI components and menu items private JList nameList; private JButton addButton, editButton, deleteButton, sortByNameButton, sortByZipButton; private JMenuItem newItem, openItem, saveItem, saveAsItem, printItem, quitItem; }