DHBW/JCash
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JCash
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gui #1

Merged
Ghost merged 5 commits from gui into main 2023-07-01 10:52:33 +00:00
Conversation 0 Commits 5 Files Changed 23 +1140 -32
23 changed files with 1140 additions and 32 deletions
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10
JCash.iml
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@ -7,5 +7,15 @@
</content>
<orderEntry type="inheritedJdk" />
<orderEntry type="sourceFolder" forTests="false" />
<orderEntry type="module-library">
<library name="JUnit4">
<CLASSES>
<root url="jar://$MAVEN_REPOSITORY$/junit/junit/4.13.1/junit-4.13.1.jar!/" />
<root url="jar://$MAVEN_REPOSITORY$/org/hamcrest/hamcrest-core/1.3/hamcrest-core-1.3.jar!/" />
</CLASSES>
<JAVADOC />
<SOURCES />
</library>
</orderEntry>
</component>
</module>

5
src/Main.java
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@ -1,5 +0,0 @@
public class Main {
public static void main(String[] args) {
System.out.println("Hello world!");
}
}

92
src/me/teridax/jcash/Main.java Normal file
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@ -0,0 +1,92 @@
package me.teridax.jcash;
import me.teridax.jcash.gui.Loader;
import me.teridax.jcash.gui.account.AccountController;
import me.teridax.jcash.gui.login.LoginController;
import javax.swing.*;
public final class Main {
/**
* Main instance of this program. Contains the primary window.
*/
private static Main instance;
/**
* Primary window of this program
*/
private final JFrame window;
private Main() {
// create main window and set defaults
this.window = new JFrame();
this.window.setTitle("Bankautomat");
this.window.setLocationByPlatform(true);
this.window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
public static void main(String[] args) {
// create main instance and show the login screen
instance();
getInstance().showLoginScreen();
}
public static Main getInstance() {
return instance;
}
/**
* Attempts to create a new instance of the singleton class Main.
* This method throws an exception if the class is already instantiated.
* @throws IllegalStateException if the class is already instantiated
* @pre the static instance of this class should be null.
* @post the static instance of this class will be set
*/
public static void instance() {
if (null != instance)
throw new IllegalStateException(Main.class.getName() + " is already initialized");
Main.instance = new Main();
}
/**
* Shows the open dialog for selecting a database file. After selection, it then proceeds to prompt login.
* Afterward the selected account can be managed.
* This method is non-blocking and all work described is performed asynchronously on the AWT Event dispatcher.
*/
public void showLoginScreen() {
SwingUtilities.invokeLater(() -> {
try {
// select db file
var path = Loader.load();
// read database and login
var login = new LoginController(path);
// when we have logged in set the account viewer as window content
login.addAccountSelectionListener(account -> {
var profileCont = new AccountController(account);
this.window.setContentPane(profileCont.getView());
this.window.revalidate();
this.window.repaint();
});
// we are not logged in yet, so show the login prompt on the main window
this.window.setContentPane(login.getView());
this.window.setSize(800, 600);
this.window.setVisible(true);
} catch (IllegalStateException e) {
System.out.println("no file selected. goodbye");
}
});
}
/**
* Logs the user out of the database, hiding the main window.
*/
public void logout() {
window.setContentPane(new JLabel("you're logged out"));
window.setVisible(false);
}
}

33
src/me/teridax/jcash/banking/Account.java
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@ -1,6 +1,6 @@
package me.teridax.jcash.banking;
import me.teridax.jcash.decode.Decoder;
import me.teridax.jcash.decode.StringUtils;
import java.util.Objects;
@ -9,7 +9,7 @@ public abstract class Account {
private final int iban;
private final int pin;
private final double balance;
private double balance;
public Account(int iban, int pin, double balance) {
this.iban = iban;
@ -20,17 +20,17 @@ public abstract class Account {
public static Account fromColumns(String[] columns) {
Objects.requireNonNull(columns);
var iban = Decoder.decodeUniqueIdentificationNumber(columns[0]);
var pin = Decoder.decodeUniqueIdentificationNumber(columns[1]);
var balance = Decoder.decodeCurrency(columns[2]);
var type = Decoder.decodeName(columns[3]);
var iban = StringUtils.decodeUniqueIdentificationNumber(columns[0]);
var pin = StringUtils.decodeUniqueIdentificationNumber(columns[1]);
var balance = StringUtils.decodeCurrency(columns[2]);
var type = StringUtils.decodeName(columns[3]);
try {
if (type.equals("Sparkonto")) {
var interest = Decoder.decodePercent(columns[4]);
var interest = StringUtils.decodePercent(columns[4]);
return new SavingsAccount(iban, pin, balance, interest);
} else if (type.equals("Girokonto")) {
var overdraft = Decoder.decodeCurrency(columns[5]);
var overdraft = StringUtils.decodeCurrency(columns[5]);
return new Girokonto(iban, pin, balance, overdraft);
} else {
throw new IllegalArgumentException("Invalid account type: " + type);
@ -64,4 +64,21 @@ public abstract class Account {
return false;
}
public String getDescription() {
return String.format("%s (%s)", iban, getClass().getSimpleName());
}
public void deposit(double amount) {
this.balance += amount;
}
@Override
public String toString() {
return String.format("@Account [iban=%d, pin=%d, balance=%.2f]", iban, pin, balance);
}
public void takeoff(double amount) {
this.balance = Math.max(0, this.balance - amount);
}
}

23
src/me/teridax/jcash/banking/Bank.java
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@ -1,6 +1,7 @@
package me.teridax.jcash.banking;
import java.util.*;
import java.util.regex.Pattern;
@SuppressWarnings("unused")
public final class Bank {
@ -46,14 +47,24 @@ public final class Bank {
}
public static String validateBlz(String maybeBlz) {
var builder = new StringBuilder();
maybeBlz.trim().chars().filter(ch -> Character.isDigit(ch) || Character.isLetter(ch)).forEach(builder::append);
var blz = builder.toString();
var pattern = Pattern.compile("[\\w\\d-_]+");
var matcher = pattern.matcher(maybeBlz);
if (blz.isEmpty()) {
throw new IllegalArgumentException("Bank Blz must only contain letters and digits");
if (matcher.find())
return matcher.group();
throw new IllegalArgumentException("not a valid BLZ: " + maybeBlz);
}
return blz;
public Optional<Profile> getAccount(int iban) {
for (var owner : this.accounts.entrySet()) {
for (var account : owner.getValue()) {
var tmp = account.getIban();
if (tmp == iban) {
return Optional.of(new Profile(owner.getKey(), this, account, getAccountsOfOwner(owner.getKey())));
}
}
}
return Optional.empty();
}
}

8
src/me/teridax/jcash/banking/BankingManagementSystem.java
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@ -1,6 +1,6 @@
package me.teridax.jcash.banking;
import me.teridax.jcash.decode.Decoder;
import me.teridax.jcash.decode.StringUtils;
import java.io.IOException;
import java.nio.file.Files;
@ -34,7 +34,7 @@ public final class BankingManagementSystem {
var account = Account.fromColumns(tail(columns, 2));
var blz = Bank.validateBlz(columns[1]);
var name = Decoder.decodeName(columns[0]);
var name = StringUtils.decodeName(columns[0]);
var bankOfLine = new Bank(blz, name);
var bankOfSet = bms.banks.stream().filter(b -> b.equals(bankOfLine)).findFirst();
@ -54,4 +54,8 @@ public final class BankingManagementSystem {
throw new IllegalArgumentException("Could not parse file " + file, e);
}
}
public Optional<Bank> getBank(String blz) {
return this.banks.stream().filter(b -> b.getBlz().equals(blz)).findFirst();
}
}

14
src/me/teridax/jcash/banking/Owner.java
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@ -1,6 +1,6 @@
package me.teridax.jcash.banking;
import me.teridax.jcash.decode.Decoder;
import me.teridax.jcash.decode.StringUtils;
import java.util.Objects;
@ -28,12 +28,12 @@ public final class Owner {
if (columns.length != 6)
throw new IllegalArgumentException("Invalid number of columns: " + columns.length);
var uid = Decoder.decodeUniqueIdentificationNumber(columns[0]);
var familyName = Decoder.decodeName(columns[1]);
var name = Decoder.decodeName(columns[2]);
var street = Decoder.decodeStreet(columns[3]);
var zip = Decoder.decodeUniqueIdentificationNumber(columns[4]);
var city = Decoder.decodeName(columns[5]);
var uid = StringUtils.decodeUniqueIdentificationNumber(columns[0]);
var familyName = StringUtils.decodeName(columns[1]);
var name = StringUtils.decodeName(columns[2]);
var street = StringUtils.decodeStreet(columns[3]);
var zip = StringUtils.decodeUniqueIdentificationNumber(columns[4]);
var city = StringUtils.decodeName(columns[5]);
return new Owner(uid, familyName, name, zip, city, street);
}

41
src/me/teridax/jcash/banking/Profile.java Normal file
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@ -0,0 +1,41 @@
package me.teridax.jcash.banking;
public class Profile {
private Owner owner;
private Bank bank;
private Account primaryAccount;
private Account[] accounts;
public Profile(Owner owner, Bank bank, Account account, Account[] accounts) {
this.owner = owner;
this.bank = bank;
this.accounts = accounts;
this.primaryAccount = account;
}
public Account getPrimaryAccount() {
return primaryAccount;
}
public Owner getOwner() {
return owner;
}
public Bank getBank() {
return bank;
}
public Account[] getAccounts() {
return accounts;
}
public void setPrimaryAccount(String description) {
for (Account account : accounts) {
if (account.getDescription().equals(description)) {
this.primaryAccount = account;
break;
}
}
}
}

2
src/me/teridax/jcash/banking/Testing.java → src/me/teridax/jcash/banking/Tests.java
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@ -4,7 +4,7 @@ import org.junit.Test;
import java.nio.file.Paths;
public class Testing {
public class Tests {
@Test
public void test() {

52
src/me/teridax/jcash/decode/Decoder.java → src/me/teridax/jcash/decode/StringUtils.java
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@ -10,11 +10,29 @@ import java.util.regex.Pattern;
import static junit.framework.TestCase.assertEquals;
public class Decoder {
/**
* Utility class for converting various single line strings into a specific data type according
* to a format mostly dictated by a locale.
*/
public class StringUtils {
/**
* Locale to use when converting strings
*/
private static final Locale LOCALE = Locale.GERMANY;
private static final NumberFormat LOCAL_NUMBER_FORMAT = NumberFormat.getInstance(LOCALE);
/**
* NumberFormat to use when converting strings
*/
public static final NumberFormat LOCAL_NUMBER_FORMAT = NumberFormat.getInstance(LOCALE);
/**
* Attempts to convert the given string into a double value representing a percentage.
* The percentage is stored in the range [0,1] and can linearly be mapped to [0, 100] by multiplying with 100.
* @param number the string to convert
* @return the double value
* @throws IllegalArgumentException when the format is invalid
* @throws NullPointerException when the argument is null
*/
public static double decodePercent(String number) throws IllegalArgumentException, NullPointerException {
Objects.requireNonNull(number);
@ -28,6 +46,13 @@ public class Decoder {
}
}
/**
* Attempts to convert the given string into a currency value.
* @param currency the string to convert
* @return the double value
* @throws IllegalArgumentException when the format is invalid
* @throws NullPointerException when the argument is null
*/
public static double decodeCurrency(String currency) throws IllegalArgumentException, NullPointerException {
Objects.requireNonNull(currency);
@ -38,6 +63,14 @@ public class Decoder {
}
}
/**
* Attempts to convert the given string into universally unique number.
* This function does not check for duplicates. The number must be a positive integer.
* @param number the string to convert
* @return the integer serial number
* @throws IllegalArgumentException when the format is invalid
* @throws NullPointerException when the argument is null
*/
public static int decodeUniqueIdentificationNumber(String number) throws IllegalArgumentException, NullPointerException {
Objects.requireNonNull(number);
@ -56,6 +89,14 @@ public class Decoder {
}
}
/**
* Attempts to convert the given string into a name.
* This method performs validation and trimming.
* @param name the string to convert
* @return the qualified name
* @throws IllegalArgumentException when the format is invalid
* @throws NullPointerException when the argument is null
*/
public static String decodeName(String name) throws IllegalArgumentException, NullPointerException {
Objects.requireNonNull(name);
@ -70,6 +111,13 @@ public class Decoder {
}
}
/**
* Attempts to convert the given string into a street and an optional house address.
* @param street the string to convert
* @return the address name
* @throws IllegalArgumentException when the format is invalid
* @throws NullPointerException when the argument is null
*/
public static String decodeStreet(String street) throws IllegalArgumentException, NullPointerException {
Objects.requireNonNull(street);

49
src/me/teridax/jcash/gui/Loader.java Normal file
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@ -0,0 +1,49 @@
package me.teridax.jcash.gui;
import me.teridax.jcash.banking.BankingManagementSystem;
import javax.swing.*;
import javax.swing.filechooser.FileNameExtensionFilter;
import java.io.File;
import static javax.swing.JFileChooser.APPROVE_OPTION;
/**
* Utility class for loading a BMS configuration from a csv file.
*/
public class Loader {
/**
* Filter that only allows for files with *.csv extension
*/
private static final FileNameExtensionFilter FILE_FILTER = new FileNameExtensionFilter("Comma separated value spreadsheet", "csv", "CSV");
private Loader() {}
/**
* Load a BMS from a csv file. Opens up a dialog which prompts the user to select a single file.
* Once the file is selected this function will try to parse the contents to a BMS and return the instance.
* @return a valid BMS instance loaded from a file
* @throws IllegalStateException When either no file is selected or the selected files content is invalid
*/
public static BankingManagementSystem load() throws IllegalStateException {
var fileChooser = new JFileChooser();
fileChooser.setMultiSelectionEnabled(false);
fileChooser.setFileSelectionMode(JFileChooser.FILES_ONLY);
fileChooser.setFileFilter(FILE_FILTER);
fileChooser.setDialogType(JFileChooser.OPEN_DIALOG);
fileChooser.setAcceptAllFileFilterUsed(false);
fileChooser.setCurrentDirectory(new File("/home/teridax/IdeaProjects/JCash/res"));
if (fileChooser.showDialog(null, "Load database") == APPROVE_OPTION) {
// parse file content
try {
return BankingManagementSystem.loadFromCsv(fileChooser.getSelectedFile().toPath());
} catch (Exception e) {
throw new IllegalStateException("Unable to load database", e);
}
}
throw new IllegalStateException("No file selected");
}
}

48
src/me/teridax/jcash/gui/account/AccountController.java Normal file
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@ -0,0 +1,48 @@
package me.teridax.jcash.gui.account;
import me.teridax.jcash.Main;
import me.teridax.jcash.banking.Profile;
import me.teridax.jcash.gui.deposit.DepositDialog;
import me.teridax.jcash.gui.takeoff.TakeoffDialog;
import me.teridax.jcash.gui.transfer.TransferDialog;
public class AccountController {
private final AccountView view;
public AccountController(Profile profile) {
this.view = new AccountView();
this.view.setProfile(profile);
createListeners(profile);
}
private void createListeners(Profile profile) {
this.view.getAccountSelection().addActionListener(e -> {
var description = ((String) this.view.getAccountSelection().getSelectedItem());
profile.setPrimaryAccount(description);
this.view.setProfile(profile);
});
this.view.getLogout().addActionListener(e -> {
Main.getInstance().logout();
Main.getInstance().showLoginScreen();
});
this.view.getDeposit().addActionListener(e -> {
new DepositDialog(profile.getPrimaryAccount(), () -> this.view.setProfile(profile));
});
this.view.getTakeoff().addActionListener(e -> {
new TakeoffDialog(profile.getPrimaryAccount(), () -> this.view.setProfile(profile));
});
this.view.getTransfer().addActionListener(e -> {
new TransferDialog(profile.getPrimaryAccount(), () -> this.view.setProfile(profile));
});
}
public AccountView getView() {
return view;
}
}

170
src/me/teridax/jcash/gui/account/AccountView.java Normal file
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@ -0,0 +1,170 @@
package me.teridax.jcash.gui.account;
import me.teridax.jcash.banking.*;
import me.teridax.jcash.decode.StringUtils;
import javax.swing.*;
import java.awt.*;
public class AccountView extends JPanel {
private JTextField iban;
private JTextField name;
private JTextField address;
private JTextField bankName;
private JTextField blz;
private JTextField type;
private JTextField typeSpecialProperty;
private JTextField balance;
private JLabel typeSpecialLabel;
private JComboBox<String> accountSelection;
private JPanel content;
private JButton logout;
private JButton transfer;
private JButton deposit;
private JButton takeoff;
public AccountView() {
createComponents();
createLayout();
setBorder(BorderFactory.createEmptyBorder(8,8,8,8));
}
public void setProfile(Profile profile) {
var bank = profile.getBank();
var account = profile.getPrimaryAccount();
var owner = profile.getOwner();
this.blz.setText(bank.getBlz());
this.bankName.setText(bank.getName());
this.iban.setText(String.valueOf(account.getIban()));
this.name.setText(owner.getName() + " " + owner.getFamilyName());
this.address.setText(owner.getStreet() + " " + owner.getCity());
this.balance.setText(StringUtils.LOCAL_NUMBER_FORMAT.format(account.getBalance()) + " €");
this.type.setText(account.getClass().getSimpleName());
if (account instanceof Girokonto) {
this.typeSpecialLabel.setText("Overdraft");
this.typeSpecialProperty.setText( StringUtils.LOCAL_NUMBER_FORMAT.format(((Girokonto) account).getOverdraft()) + " €");
} else if (account instanceof SavingsAccount) {
this.typeSpecialLabel.setText("Interest rate");
this.typeSpecialProperty.setText( ((SavingsAccount) account).getInterest() + " %" );
}
this.accountSelection.removeAllItems();
for (var otherAccount : profile.getAccounts()) {
this.accountSelection.addItem(otherAccount.getDescription());
}
this.accountSelection.setSelectedItem(account.getDescription());
}
private void createLayout() {
setLayout(new BorderLayout(16, 16));
add(new JScrollPane(content), BorderLayout.CENTER);
content.setLayout(new GridBagLayout());
var constraints = new GridBagConstraints();
constraints.gridwidth = 4;
constraints.insets = new Insets(12,12,12,12);
var accountSelectionPanel = new JPanel(new BorderLayout(12, 0));
accountSelectionPanel.add(iban, BorderLayout.CENTER);
accountSelectionPanel.add(accountSelection, BorderLayout.EAST);
addInputRow(constraints, content, accountSelectionPanel, 1, new JLabel("IBAN", SwingConstants.RIGHT));
addInputRow(constraints, content, name, 2, new JLabel("Name/Family-name", SwingConstants.RIGHT));
addInputRow(constraints, content, address, 3, new JLabel("Address", SwingConstants.RIGHT));
addInputRow(constraints, content, bankName, 4, new JLabel("Bank", SwingConstants.RIGHT));
addInputRow(constraints, content, blz, 5, new JLabel("BLZ", SwingConstants.RIGHT));
addInputRow(constraints, content, type, 6, new JLabel("Account", SwingConstants.RIGHT));
addInputRow(constraints, content, typeSpecialProperty, 7, typeSpecialLabel);
addInputRow(constraints, content, balance, 8, new JLabel("Balance", SwingConstants.RIGHT));
var buttonPanel = Box.createHorizontalBox();
buttonPanel.add(Box.createHorizontalStrut(4));
buttonPanel.add(logout);
buttonPanel.add(Box.createHorizontalStrut(4));
buttonPanel.add(Box.createGlue());
buttonPanel.add(transfer);
buttonPanel.add(Box.createHorizontalStrut(4));
buttonPanel.add(deposit);
buttonPanel.add(Box.createHorizontalStrut(4));
buttonPanel.add(takeoff);
add(buttonPanel, BorderLayout.SOUTH);
}
private void createComponents() {
this.blz = new JTextField();
this.iban = new JTextField();
this.address = new JTextField();
this.bankName = new JTextField();
this.name = new JTextField();
this.type = new JTextField();
this.balance = new JTextField();
this.typeSpecialProperty = new JTextField();
this.blz.setEditable(false);
this.iban.setEditable(false);
this.address.setEditable(false);
this.bankName.setEditable(false);
this.name.setEditable(false);
this.type.setEditable(false);
this.balance.setEditable(false);
this.typeSpecialProperty.setEditable(false);
this.typeSpecialLabel = new JLabel("", SwingConstants.RIGHT);
this.accountSelection = new JComboBox<>();
this.content = new JPanel();
this.logout = new JButton("Logout");
this.transfer = new JButton("Transfer");
this.deposit = new JButton("Deposit");
this.takeoff = new JButton("Takeoff");
}
private void addInputRow(GridBagConstraints constraints, JComponent target, JComponent comp, int row, JLabel label) {
constraints.gridwidth = 1;
constraints.gridx = 1;
constraints.gridy = row;
constraints.weightx = 0;
constraints.fill = GridBagConstraints.HORIZONTAL;
target.add(label, constraints);
constraints.gridx = 2;
constraints.gridy = row;
constraints.weightx = 1;
constraints.fill = GridBagConstraints.HORIZONTAL;
target.add(comp, constraints);
}
public JComboBox<String> getAccountSelection() {
return accountSelection;
}
public JButton getLogout() {
return logout;
}
public JButton getTransfer() {
return transfer;
}
public JButton getDeposit() {
return deposit;
}
public JButton getTakeoff() {
return takeoff;
}
}

17
src/me/teridax/jcash/gui/deposit/DepositDialog.java Normal file
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@ -0,0 +1,17 @@
package me.teridax.jcash.gui.deposit;
import me.teridax.jcash.banking.Account;
public class DepositDialog {
public DepositDialog(Account account, Runnable onDeposit) {
var view = new DepositView(account);
view.getDeposit().addActionListener(e -> {
account.deposit(view.getAmount());
onDeposit.run();
view.dispose();
});
view.getCancel().addActionListener(e -> view.dispose());
view.showDialog();
}
}

115
src/me/teridax/jcash/gui/deposit/DepositView.java Normal file
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@ -0,0 +1,115 @@
package me.teridax.jcash.gui.deposit;
import me.teridax.jcash.banking.Account;
import me.teridax.jcash.decode.StringUtils;
import javax.swing.*;
import java.awt.*;
import java.text.NumberFormat;
import java.text.ParseException;
public class DepositView {
private JDialog dialog;
private JButton cancel;
private JButton deposit;
private JFormattedTextField value;
public DepositView(Account account) {
createComponents(account);
layoutComponents();
}
public void showDialog() {
dialog.setModalityType(Dialog.ModalityType.APPLICATION_MODAL);
dialog.setTitle("Deposit money");
dialog.pack();
dialog.setResizable(false);
dialog.setLocationRelativeTo(null);
dialog.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
dialog.setVisible(true);
}
private void layoutComponents() {
dialog.getContentPane().setLayout(new GridBagLayout());
var c = new GridBagConstraints();
c.gridx = 0;
c.gridy = 0;
c.weightx = 1;
c.weighty = 1;
c.gridwidth = 3;
c.fill = GridBagConstraints.HORIZONTAL;
c.anchor = GridBagConstraints.CENTER;
c.insets = new Insets(4, 4, 4, 4);
dialog.getContentPane().add(new JLabel("Deposit money"), c);
c.gridx = 0;
c.gridy = 1;
c.gridwidth = 1;
c.fill = GridBagConstraints.NONE;
c.anchor = GridBagConstraints.LAST_LINE_END;
c.weightx = 0;
dialog.getContentPane().add(new JLabel("Value", SwingConstants.RIGHT), c);
c.gridx = 1;
c.gridy = 1;
c.fill = GridBagConstraints.HORIZONTAL;
c.anchor = GridBagConstraints.LAST_LINE_END;
c.weightx = 0.5;
dialog.getContentPane().add(value, c);
c.gridx = 2;
c.gridy = 1;
c.fill = GridBagConstraints.NONE;
c.anchor = GridBagConstraints.LINE_START;
c.weightx = 0;
dialog.getContentPane().add(new JLabel("€"), c);
var buttonPanel = new JPanel(new FlowLayout(FlowLayout.TRAILING));
buttonPanel.add(cancel);
buttonPanel.add(deposit);
c.gridx = 0;
c.gridy = 2;
c.gridwidth = 3;
c.fill = GridBagConstraints.HORIZONTAL;
c.anchor = GridBagConstraints.LAST_LINE_END;
c.insets = new Insets(10, 10, 10, 10);
dialog.getContentPane().add(buttonPanel, c);
}
private void createComponents(Account account) {
this.dialog = new JDialog();
this.cancel = new JButton("Cancel");
this.deposit = new JButton("Deposit");
this.value = new JFormattedTextField(StringUtils.LOCAL_NUMBER_FORMAT);
this.dialog.setContentPane(new JPanel(new GridBagLayout()));
}
public double getAmount() {
if (value.getText().isBlank())
return 0;
try {
return NumberFormat.getNumberInstance().parse(value.getText()).doubleValue();
} catch (ParseException e) {
throw new RuntimeException(e);
}
}
public JButton getCancel() {
return cancel;
}
public JButton getDeposit() {
return deposit;
}
public void dispose() {
this.dialog.dispose();
}
}

8
src/me/teridax/jcash/gui/login/AccountSelectionListener.java Normal file
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@ -0,0 +1,8 @@
package me.teridax.jcash.gui.login;
import me.teridax.jcash.banking.Profile;
public interface AccountSelectionListener {
void onAccountSelected(Profile account);
}

73
src/me/teridax/jcash/gui/login/LoginController.java Normal file
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package me.teridax.jcash.gui.login;
import me.teridax.jcash.banking.BankingManagementSystem;
import javax.swing.*;
import java.awt.event.ActionEvent;
import java.util.Optional;
public class LoginController {
private final LoginView view;
private final LoginData data;
private AccountSelectionListener listener;
public LoginController(BankingManagementSystem bms) {
this.view = new LoginView();
this.data = new LoginData(bms);
addActionListeners();
}
private void addActionListeners() {
this.view.getLogin().addActionListener(this::login);
}
private Optional<Integer> getIban() {
try {
var iban = this.view.getIban().getText();
return Optional.of(Integer.parseUnsignedInt(iban));
} catch (NumberFormatException e) {
return Optional.empty();
}
}
private Optional<Integer> getPin() {
try {
var iban = this.view.getPin().getPassword();
return Optional.of(Integer.parseUnsignedInt(new String(iban)));
} catch (NumberFormatException e) {
return Optional.empty();
}
}
private void login(ActionEvent ignored) {
var blz = this.view.getBlz().getText();
var iban = this.getIban();
if (iban.isEmpty()) {
JOptionPane.showMessageDialog(null, "invalid IBAN", "Faulty login attempt", JOptionPane.ERROR_MESSAGE);
return;
}
var pin = this.getPin();
if (pin.isEmpty()) {
JOptionPane.showMessageDialog(null, "invalid pin", "Faulty login attempt", JOptionPane.ERROR_MESSAGE);
return;
}
var account = this.data.authenticateAccount(blz, iban.get(), pin.get());
if (account.isPresent()) {
this.listener.onAccountSelected(account.get());
} else {
JOptionPane.showMessageDialog(null, "invalid login credentials", "Faulty login attempt", JOptionPane.ERROR_MESSAGE);
}
}
public void addAccountSelectionListener(AccountSelectionListener listener) {
this.listener = listener;
}
public LoginView getView() {
return view;
}
}

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src/me/teridax/jcash/gui/login/LoginData.java Normal file
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package me.teridax.jcash.gui.login;
import me.teridax.jcash.banking.BankingManagementSystem;
import me.teridax.jcash.banking.Profile;
import java.util.Optional;
public class LoginData {
private final BankingManagementSystem bms;
public LoginData(BankingManagementSystem bms) {
this.bms = bms;
}
public Optional<Profile> authenticateAccount(String blz, int iban, int pin) {
var optionalBank = bms.getBank(blz);
if (optionalBank.isEmpty())
return Optional.empty();
var profile = optionalBank.get().getAccount(iban);
return profile.filter(value -> value.getPrimaryAccount().getPin() == pin);
}
}

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src/me/teridax/jcash/gui/login/LoginView.java Normal file
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package me.teridax.jcash.gui.login;
import javax.swing.*;
import javax.swing.text.NumberFormatter;
import java.awt.*;
import java.text.NumberFormat;
public class LoginView extends JPanel {
private final JFormattedTextField blz;
private final JFormattedTextField iban;
private final JPasswordField pin;
private final JButton login;
public LoginView() {
this.blz = new JFormattedTextField("MA2424");
this.iban = new JFormattedTextField(getNumberFormat());
this.iban.setText("4711");
this.pin = new JPasswordField("1234");
this.login = new JButton("Login");
setLayout(new BorderLayout(16, 16));
var content = new JPanel();
this.setBorder(BorderFactory.createEmptyBorder(8,8,8,8));
add(new JScrollPane(content), BorderLayout.CENTER);
add(new JLabel("Bankautomat"), BorderLayout.NORTH);
var layout = new GridBagLayout();
var constraints = new GridBagConstraints();
content.setLayout(layout);
constraints.gridwidth = 4;
constraints.insets = new Insets(12,12,12,12);
addInputRow(constraints, content, blz, 1, "BLZ");
addInputRow(constraints, content, iban, 2, "Kontonummer");
addInputRow(constraints, content, pin, 3, "Passwort");
constraints.gridy = 4;
constraints.anchor = GridBagConstraints.PAGE_END;
constraints.weightx = 0;
constraints.fill = GridBagConstraints.NONE;
constraints.insets = new Insets(12,12,12,12);
content.add(login, constraints);
}
private NumberFormatter getNumberFormat() {
var format = NumberFormat.getIntegerInstance();
format.setGroupingUsed(false);
var formatter = new NumberFormatter(format);
formatter.setValueClass(Integer.class);
formatter.setMinimum(0);
formatter.setMaximum(Integer.MAX_VALUE);
formatter.setAllowsInvalid(false);
return formatter;
}
private void addInputRow(GridBagConstraints constraints, JComponent target, JComponent comp, int row, String name) {
constraints.gridwidth = 1;
constraints.gridx = 1;
constraints.gridy = row;
constraints.weightx = 0;
constraints.fill = GridBagConstraints.HORIZONTAL;
target.add(new JLabel(name, SwingConstants.RIGHT), constraints);
constraints.gridx = 2;
constraints.gridy = row;
constraints.weightx = 1;
constraints.fill = GridBagConstraints.HORIZONTAL;
target.add(comp, constraints);
}
public JTextField getBlz() {
return blz;
}
public JTextField getIban() {
return iban;
}
public JPasswordField getPin() {
return pin;
}
public JButton getLogin() {
return login;
}
}

17
src/me/teridax/jcash/gui/takeoff/TakeoffDialog.java Normal file
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package me.teridax.jcash.gui.takeoff;
import me.teridax.jcash.banking.Account;
public class TakeoffDialog {
public TakeoffDialog(Account account, Runnable onTakeoff) {
var view = new TakeoffView(account);
view.getTakeoff().addActionListener(e -> {
account.takeoff(view.getAmount());
onTakeoff.run();
view.dispose();
});
view.getCancel().addActionListener(e -> view.dispose());
view.showDialog();
}
}

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src/me/teridax/jcash/gui/takeoff/TakeoffView.java Normal file
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package me.teridax.jcash.gui.takeoff;
import me.teridax.jcash.banking.Account;
import me.teridax.jcash.decode.StringUtils;
import javax.swing.*;
import java.awt.*;
import java.text.NumberFormat;
import java.text.ParseException;
import static javax.swing.JOptionPane.ERROR_MESSAGE;
import static javax.swing.JOptionPane.showMessageDialog;
public class TakeoffView {
private JDialog dialog;
private JButton cancel;
private JButton takeoff;
private JFormattedTextField value;
public TakeoffView(Account account) {
createComponents(account);
layoutComponents();
}
public void showDialog() {
dialog.setModalityType(Dialog.ModalityType.APPLICATION_MODAL);
dialog.setTitle("Takeoff money");
dialog.pack();
dialog.setResizable(false);
dialog.setLocationRelativeTo(null);
dialog.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
dialog.setVisible(true);
}
private void layoutComponents() {
var c = new GridBagConstraints();
c.gridx = 0;
c.gridy = 0;
c.weightx = 1;
c.weighty = 1;
c.gridwidth = 3;
c.fill = GridBagConstraints.HORIZONTAL;
c.anchor = GridBagConstraints.CENTER;
c.insets = new Insets(4, 4, 4, 4);
dialog.getContentPane().add(new JLabel("Takeoff money"), c);
c.gridx = 0;
c.gridy = 1;
c.gridwidth = 1;
c.fill = GridBagConstraints.NONE;
c.anchor = GridBagConstraints.LAST_LINE_END;
c.weightx = 0;
dialog.getContentPane().add(new JLabel("Value", SwingConstants.RIGHT), c);
c.gridx = 1;
c.gridy = 1;
c.fill = GridBagConstraints.HORIZONTAL;
c.anchor = GridBagConstraints.LAST_LINE_END;
c.weightx = 0.5;
dialog.getContentPane().add(value, c);
c.gridx = 2;
c.gridy = 1;
c.fill = GridBagConstraints.NONE;
c.anchor = GridBagConstraints.LINE_START;
c.weightx = 0;
dialog.getContentPane().add(new JLabel("€"), c);
var buttonPanel = new JPanel(new FlowLayout(FlowLayout.TRAILING));
buttonPanel.add(cancel);
buttonPanel.add(takeoff);
c.gridx = 0;
c.gridy = 2;
c.gridwidth = 3;
c.fill = GridBagConstraints.HORIZONTAL;
c.anchor = GridBagConstraints.LAST_LINE_END;
c.insets = new Insets(10, 10, 10, 10);
dialog.getContentPane().add(buttonPanel, c);
}
private void createComponents(Account account) {
this.dialog = new JDialog();
this.cancel = new JButton("Cancel");
this.takeoff = new JButton("Takeoff");
this.value = new JFormattedTextField(StringUtils.LOCAL_NUMBER_FORMAT);
this.dialog.setContentPane(new JPanel(new GridBagLayout()));
}
public double getAmount() {
if (value.getText().isBlank()) {
showMessageDialog(null, "invalid amount", "currency must not be blank", ERROR_MESSAGE);
return 0;
}
try {
return NumberFormat.getNumberInstance().parse(value.getText()).doubleValue();
} catch (ParseException e) {
throw new RuntimeException(e);
}
}
public JButton getCancel() {
return cancel;
}
public JButton getTakeoff() {
return takeoff;
}
public void dispose() {
this.dialog.dispose();
}
}

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src/me/teridax/jcash/gui/transfer/TransferDialog.java Normal file
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package me.teridax.jcash.gui.transfer;
import me.teridax.jcash.banking.Account;
public class TransferDialog {
public TransferDialog(Account account, Runnable onDeposit) {
var view = new TransferView(account);
view.getTransfer().addActionListener(e -> {
account.takeoff(view.getAmount());
onDeposit.run();
view.dispose();
});
view.getCancel().addActionListener(e -> view.dispose());
view.showDialog();
}
}

144
src/me/teridax/jcash/gui/transfer/TransferView.java Normal file
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package me.teridax.jcash.gui.transfer;
import me.teridax.jcash.banking.Account;
import me.teridax.jcash.decode.StringUtils;
import javax.swing.*;
import java.awt.*;
import java.text.NumberFormat;
import java.text.ParseException;
import static javax.swing.JOptionPane.ERROR_MESSAGE;
import static javax.swing.JOptionPane.showMessageDialog;
public class TransferView {
private JDialog dialog;
private JButton cancel;
private JButton transfer;
private JFormattedTextField iban;
private JFormattedTextField blz;
private JFormattedTextField value;
public TransferView(Account account) {
createComponents(account);
layoutComponents();
}
public void showDialog() {
dialog.setModalityType(Dialog.ModalityType.APPLICATION_MODAL);
dialog.setTitle("Transfer money");
dialog.pack();
dialog.setSize(dialog.getWidth() * 2, dialog.getHeight());
dialog.setResizable(false);
dialog.setLocationRelativeTo(null);
dialog.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
dialog.setVisible(true);
}
private void layoutComponents() {
var c = new GridBagConstraints();
c.gridx = 0;
c.gridy = 0;
c.weightx = 1;
c.weighty = 1;
c.gridwidth = 3;
c.fill = GridBagConstraints.HORIZONTAL;
c.anchor = GridBagConstraints.CENTER;
c.insets = new Insets(4, 4, 4, 4);
dialog.getContentPane().add(new JLabel("Transfer money"), c);
c.gridx = 0;
c.gridy = 1;
c.gridwidth = 1;
c.fill = GridBagConstraints.NONE;
c.anchor = GridBagConstraints.LAST_LINE_END;
c.weightx = 0;
dialog.getContentPane().add(new JLabel("BLZ", SwingConstants.RIGHT), c);
c.gridx = 1;
c.gridy = 1;
c.fill = GridBagConstraints.HORIZONTAL;
c.anchor = GridBagConstraints.LAST_LINE_END;
c.weightx = 0.5;
dialog.getContentPane().add(blz, c);
c.gridx = 2;
c.gridy = 1;
c.fill = GridBagConstraints.NONE;
c.anchor = GridBagConstraints.LAST_LINE_END;
c.weightx = 0;
dialog.getContentPane().add(new JLabel("IBAN", SwingConstants.RIGHT), c);
c.gridx = 3;
c.gridy = 1;
c.fill = GridBagConstraints.HORIZONTAL;
c.anchor = GridBagConstraints.LAST_LINE_END;
c.weightx = 1;
dialog.getContentPane().add(iban, c);
c.gridx = 0;
c.gridy = 2;
c.fill = GridBagConstraints.NONE;
c.anchor = GridBagConstraints.LAST_LINE_END;
c.weightx = 0;
dialog.getContentPane().add(new JLabel("Betrag", SwingConstants.RIGHT), c);
c.gridx = 1;
c.gridy = 2;
c.fill = GridBagConstraints.HORIZONTAL;
c.anchor = GridBagConstraints.LAST_LINE_END;
c.weightx = 0.5;
dialog.getContentPane().add(value, c);
var buttonPanel = new JPanel(new FlowLayout(FlowLayout.TRAILING));
buttonPanel.add(cancel);
buttonPanel.add(transfer);
c.gridx = 0;
c.gridy = 3;
c.gridwidth = 4;
c.fill = GridBagConstraints.HORIZONTAL;
c.anchor = GridBagConstraints.LAST_LINE_END;
c.insets = new Insets(10, 10, 10, 10);
dialog.getContentPane().add(buttonPanel, c);
}
private void createComponents(Account account) {
this.dialog = new JDialog();
this.cancel = new JButton("Cancel");
this.transfer = new JButton("Transfer");
this.value = new JFormattedTextField(StringUtils.LOCAL_NUMBER_FORMAT);
this.iban = new JFormattedTextField();
this.blz = new JFormattedTextField();
this.dialog.setContentPane(new JPanel(new GridBagLayout()));
}
public double getAmount() {
if (value.getText().isBlank()) {
showMessageDialog(null, "invalid amount", "currency must not be blank", ERROR_MESSAGE);
return 0;
}
try {
return NumberFormat.getNumberInstance().parse(value.getText()).doubleValue();
} catch (ParseException e) {
throw new RuntimeException(e);
}
}
public JButton getCancel() {
return cancel;
}
public JButton getTransfer() {
return transfer;
}
public void dispose() {
this.dialog.dispose();
}
}