package Application;
 
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.File;
import java.io.FileInputStream;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
import org.xml.sax.helpers.DefaultHandler;
import javax.swing.DefaultComboBoxModel;
import javax.swing.JOptionPane;
import Assingment.User;
import Assingment.NormalUser;
import Assingment.AdminUser;
import Assingment.UserList;
import Assingment.BusinessManager;
import Assingment.UserHandler;
 
/**
 *
 * @author Tristan
 */
public class UserManagement extends javax.swing.JFrame {
 
    private BusinessManager theBM;
    private UserList users;
    private AdminUser adminUsers;
    private NormalUser normalUsers;
    private DefaultComboBoxModel userModel;
    private File fileName;
    private String[] userNames;
 
    /** Creates new form UserManagement */
    public UserManagement() {
        createDM();
        createUserCmb();
        initComponents();
 
        // Create the File object to hold the file name
        fileName = new File("C:\\Users\\Tristan\\Desktop\\edited\\Assingment 2010-01-16 at 16.11.38", "UserData.xml");
 
        // Create the data in a Branch object, then get the
        // account numbers and place them in the combo box.
        getData();
        userNames = users.getUserNames();
        userModel = new DefaultComboBoxModel(userNames);
 
        // NetBeans method to initialise GUI components
 
 
        // Show the data for the first Users
        cmbUsers.setSelectedIndex(0);
        showUsersDetails();
    }
 
    private void getData() {
        // Set up the file details and create the parser, then start it.
        // On completion, retrieve the accounts and display them.
        DefaultHandler handler = new UserHandler();
 
        try {
            SAXParserFactory factory = SAXParserFactory.newInstance();
            SAXParser parser = factory.newSAXParser();
            parser.parse(fileName, handler);
        } catch (Exception err) {
            System.out.println("Exception: " + err.getMessage());
            err.printStackTrace();
        }
 
        // On completion of the parsing process, get the branch object
        // created by the account handler
        users = ((UserHandler) handler).getUserlist();
    }
 
    private void createDM() {
// Creates the model through test data
        generateTD();
    }
 
    private void createUserCmb() {
        String[] userNames = users.getUserNames();
        userModel = new DefaultComboBoxModel(userNames);
    }
 
    private void generateTD() {
        // This method creates the data model from hard-coded test data.
 
        NormalUser nUser;
        AdminUser aUser;
// Create the object that controls the data model
 
        theBM = new BusinessManager();
 
        // allows the GUI to access the objects they contain.
        users = theBM.getUsers();
 
 
        aUser = new AdminUser("Tristan Parker", "taparker", "tristan@parker.com", 2);
        users.addUser(aUser);
 
        nUser = new NormalUser("Caroline Williams", "cmwillaims", "caroline@williams.com", 2);
        users.addUser(nUser);
    }
 
// Event Handlers
    private void showUsersDetails() {
        User selected = users.getUserAt(cmbUsers.getSelectedIndex());
        txtEmailAddress.setText(selected.getEmail());
        txtUsername.setText(selected.getUserID());
 
        if (selected instanceof AdminUser) {
            radAdmin.setSelected(true);
        } else {
            radNormal.setSelected(true);
        }
 
    }
 
    private void addUserDetails() {
        AddUserGUI createUser;
        User user;
 
        user =new AdminUser();
        user =new NormalUser();
        createUser =new AddUserGUI(this, true, user);
        createUser.setVisible(true);
 
        if (createUser.getCloseButton().equals("OK")) {
            users.addUser(user);
            userModel.addElement(user.getName());
            cmbUsers.setSelectedIndex(users.size() - 1);
        }
 
    }
 
    private void updateUser() {
        int selectedIndex = cmbUsers.getSelectedIndex();
        if (selectedIndex == -1) {
            JOptionPane.showMessageDialog(null,
                    "User not selected!", "Error",
                    JOptionPane.ERROR_MESSAGE);
        } else {
            AddUserGUI augUpdate;
            User selected = users.getUserAt(selectedIndex);
 
            augUpdate =
                    new AddUserGUI(this, true, selected);
            augUpdate.setVisible(true);
 
            // On return from the dialog, rebuild model in case
            // the name has changed
            if (augUpdate.getCloseButton().equals("OK")) {
                userModel = new DefaultComboBoxModel(users.getUserNames());
                cmbUsers.setModel(userModel);
                cmbUsers.setSelectedIndex(selectedIndex);
            }
 
        }
    }
 
    private void deleteUser() {
        int confirmed = JOptionPane.showConfirmDialog(null,
                "Are you sure you want to delete this user ",
                "Confirm closure!", JOptionPane.YES_NO_OPTION);
        if (confirmed == JOptionPane.YES_OPTION) {
            users.removeUserAt(cmbUsers.getSelectedIndex());
            userModel.removeElementAt(cmbUsers.getSelectedIndex());
        }
 
    }
 
    // Save and exit
    private void saveAndExit() {
        FileOutputStream outStream;
        PrintWriter pw;
        User user;
 
        // Create stream and write the DTD
        try {
            outStream = new FileOutputStream(fileName);
            pw = new PrintWriter(outStream);
 
            // write out DTD
            pw.println("<?xml version = \"1.0\" standalone = \"yes\"?>");
            pw.println("<!DOCTYPE Users [");
            pw.println("  <!ELEMENT Users (aUser, nUser)+ >");
            pw.println("  <!ELEMENT aUser (name, userID, emailAddress) >");
            pw.println("  <!ELEMENT nUser (name, userID, emailAddress) >");
            pw.println("  <!ELEMENT name (#PCDATA) >");
            pw.println("  <!ELEMENT userID (#PCDATA) >");
            pw.println("  <!ELEMENT emailAddress (#PCDATA) >");
            pw.println("] >");
 
            // Write out the data
            pw.println("<Users>");
 
            // Write out the xml representation of each account object.
            // It doesn't matter which type of account it is - because
            // BankAccount has a getXML() method as well as the sub-classes
            // having the same signature methods, it will use whichever is
            // appropriate to the current object.
            for (int ct = 0; ct < users.size(); ct++) {
 
                user = users.getUserAt(ct);
                pw.println(user.getXML());
            }
 
 
            pw.println("</Users>");
 
            // Close the file
            pw.close();
        } catch (IOException err) {
            err.printStackTrace();
        }
 
        // Finally, close the program.
        System.exit(0);
    }

fileName = new File("C:\\Users\\Tristan\\Desktop\\edited\\Assingment 2010-01-16 at 16.11.38", "UserData.xml");