Moved the LoginDialogController class inside the LoginDialog class

src/main/java/envoy/client/net/Client.java

@@ -46,9 +46,10 @@ public class Client implements Closeable {
 	private volatile Set<? extends Contact>	contacts;
 	private volatile boolean				rejected;
 
-	// Configuration and logging
-	private static final ClientConfig	config	= ClientConfig.getInstance();
-	private static final Logger			logger	= EnvoyLog.getLogger(Client.class);
+	// Configuration, logging and event management
+	private static final ClientConfig	config		= ClientConfig.getInstance();
+	private static final Logger			logger		= EnvoyLog.getLogger(Client.class);
+	private static final EventBus		eventBus	= EventBus.getInstance();
 
 	/**
 	 * Enters the online mode by acquiring a user ID from the server. As a
@@ -80,7 +81,7 @@ public class Client implements Closeable {
 		// Register user creation processor, contact list processor and message cache
 		receiver.registerProcessor(User.class, sender -> { this.sender = sender; contacts = sender.getContacts(); });
 		receiver.registerProcessor(Message.class, receivedMessageCache);
-		receiver.registerProcessor(HandshakeRejectionEvent.class, evt -> { rejected = true; EventBus.getInstance().dispatch(evt); });
+		receiver.registerProcessor(HandshakeRejectionEvent.class, evt -> { rejected = true; eventBus.dispatch(evt); });
 
 		rejected = false;
 
@@ -146,20 +147,19 @@ public class Client implements Closeable {
 		receiver.registerProcessor(IDGenerator.class, localDB::setIDGenerator);
 
 		// Process name changes
-		receiver.registerProcessor(NameChangeEvent.class, evt -> { localDB.replaceContactName(evt); EventBus.getInstance().dispatch(evt); });
+		receiver.registerProcessor(NameChangeEvent.class, evt -> { localDB.replaceContactName(evt); eventBus.dispatch(evt); });
 
 		// Process contact searches
-		receiver.registerProcessor(ContactSearchResult.class, EventBus.getInstance()::dispatch);
+		receiver.registerProcessor(ContactSearchResult.class, eventBus::dispatch);
 
 		receiver.registerProcessor(Contact.class,
-				contacts -> EventBus.getInstance()
-					.dispatch(new ContactOperationEvent(contacts.getContacts().iterator().next(), ElementOperation.ADD)));
+				contacts -> eventBus.dispatch(new ContactOperationEvent(contacts.getContacts().iterator().next(), ElementOperation.ADD)));
 
 		// Process group size changes
-		receiver.registerProcessor(GroupResizeEvent.class, evt -> { localDB.updateGroup(evt); EventBus.getInstance().dispatch(evt); });
+		receiver.registerProcessor(GroupResizeEvent.class, evt -> { localDB.updateGroup(evt); eventBus.dispatch(evt); });
 
 		// Send event
-		EventBus.getInstance().register(SendEvent.class, evt -> {
+		eventBus.register(SendEvent.class, evt -> {
 			try {
 				sendEvent(evt.get());
 			} catch (IOException e) {

src/main/java/envoy/client/ui/LoginDialog.fxml

@@ -2,6 +2,7 @@
 
 <?import javafx.scene.control.Button?>
 <?import javafx.scene.control.CheckBox?>
+<?import javafx.scene.control.DialogPane?>
 <?import javafx.scene.control.Label?>
 <?import javafx.scene.control.PasswordField?>
 <?import javafx.scene.control.TextField?>
@@ -12,52 +13,37 @@
 <?import javafx.scene.layout.VBox?>
 <?import javafx.scene.text.Font?>
 
-<VBox maxHeight="-Infinity" maxWidth="-Infinity"
-	minHeight="-Infinity" minWidth="-Infinity" prefHeight="400.0"
-	prefWidth="600.0" xmlns="http://javafx.com/javafx/11.0.1"
-	xmlns:fx="http://javafx.com/fxml/1"
-	fx:controller="envoy.client.ui.LoginDialogController">
-	<children>
-		<Label text="User Login">
-			<font>
-				<Font size="26.0" />
-			</font>
-		</Label>
-		<GridPane>
-			<columnConstraints>
-				<ColumnConstraints hgrow="SOMETIMES"
-					minWidth="10.0" percentWidth="40.0" prefWidth="100.0" />
-				<ColumnConstraints hgrow="SOMETIMES"
-					minWidth="10.0" prefWidth="100.0" />
-			</columnConstraints>
-			<rowConstraints>
-				<RowConstraints minHeight="10.0" prefHeight="30.0"
-					vgrow="SOMETIMES" />
-				<RowConstraints minHeight="10.0" prefHeight="30.0"
-					vgrow="SOMETIMES" />
-				<RowConstraints minHeight="10.0" prefHeight="30.0"
-					vgrow="SOMETIMES" />
-			</rowConstraints>
-			<children>
-				<Label text="User Name:" />
-				<Label text="Password" GridPane.rowIndex="1" />
-				<Label text="Repeat Password:" visible="false"
-					GridPane.rowIndex="2" fx:id="repeatPasswordLabel" />
-				<TextField GridPane.columnIndex="1" />
-				<PasswordField GridPane.columnIndex="1"
-					GridPane.rowIndex="1" fx:id="repeatPasswordField"/>
-				<PasswordField visible="false"
-					GridPane.columnIndex="1" GridPane.rowIndex="2" fx:id="repeatPasswordField"/>
-			</children>
-		</GridPane>
-		<CheckBox mnemonicParsing="false" text="Register" fx:id="registerCheckBox" onAction="#registerCheckboxChanged"/>
-		<HBox prefHeight="100.0" prefWidth="200.0">
-			<children>
-				<Button cancelButton="true" mnemonicParsing="false"
-					text="Cancel" onAction="#cancelButtonClicked"/>
-				<Button defaultButton="true" mnemonicParsing="false"
-					text="Submit" disable="true" onAction="#submitButtonClicked"/>
-			</children>
-		</HBox>
-	</children>
-</VBox>
+
+<DialogPane xmlns="http://javafx.com/javafx/11.0.1" xmlns:fx="http://javafx.com/fxml/1" fx:controller="envoy.client.ui.LoginDialog$Controller">
+   <content>
+      <VBox maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="400.0" prefWidth="600.0">
+      	<children>
+      		<Label text="User Login">
+      			<font>
+      				<Font size="26.0" />
+      			</font>
+      		</Label>
+      		<GridPane>
+      			<columnConstraints>
+      				<ColumnConstraints hgrow="SOMETIMES" minWidth="10.0" percentWidth="40.0" prefWidth="100.0" />
+      				<ColumnConstraints hgrow="SOMETIMES" minWidth="10.0" prefWidth="100.0" />
+      			</columnConstraints>
+      			<rowConstraints>
+      				<RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
+      				<RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
+      				<RowConstraints minHeight="10.0" prefHeight="30.0" vgrow="SOMETIMES" />
+      			</rowConstraints>
+      			<children>
+      				<Label text="User Name:" />
+      				<Label text="Password" GridPane.rowIndex="1" />
+      				<Label fx:id="repeatPasswordLabel" text="Repeat Password:" visible="false" GridPane.rowIndex="2" />
+      				<TextField fx:id="userTextField" GridPane.columnIndex="1" />
+      				<PasswordField fx:id="repeatPasswordField" GridPane.columnIndex="1" GridPane.rowIndex="1" />
+      				<PasswordField fx:id="repeatPasswordField" visible="false" GridPane.columnIndex="1" GridPane.rowIndex="2" />
+      			</children>
+      		</GridPane>
+      		<CheckBox fx:id="registerCheckBox" mnemonicParsing="false" onAction="#registerCheckboxChanged" text="Register" />
+      	</children>
+      </VBox>
+   </content>
+</DialogPane>

src/main/java/envoy/client/ui/LoginDialog.java

@@ -0,0 +1,70 @@
+package envoy.client.ui;
+
+import java.io.IOException;
+
+import javafx.application.Platform;
+import javafx.fxml.FXML;
+import javafx.fxml.FXMLLoader;
+import javafx.scene.control.*;
+
+/**
+ * Project: <strong>envoy-client</strong><br>
+ * File: <strong>LoginDialog.java</strong><br>
+ * Created: <strong>03.04.2020</strong><br>
+ * 
+ * @author Kai S. K. Engelbart
+ * @since Envoy Client v0.1-beta
+ */
+public final class LoginDialog extends Dialog<Void> {
+
+	/**
+	 * Loads the login dialog using the FXML file {@code LoginDialog.fxml}.
+	 * 
+	 * @throws IOException if an exception occurs during loading
+	 * @since Envoy Client v0.1-beta
+	 */
+	public LoginDialog() throws IOException {
+		final var dialogPane = FXMLLoader.<DialogPane>load(getClass().getResource("LoginDialog.fxml"));
+
+		// Configure buttons
+		dialogPane.getButtonTypes().addAll(ButtonType.CANCEL, ButtonType.OK);
+
+		setDialogPane(dialogPane);
+	}
+
+	public static class Controller {
+
+		@FXML
+		private TextField userTextField;
+
+		@FXML
+		private PasswordField passwordField;
+
+		@FXML
+		private PasswordField repeatPasswordField;
+
+		@FXML
+		private Label repeatPasswordLabel;
+
+		@FXML
+		private CheckBox registerCheckBox;
+
+		@FXML
+		private void initialize() {
+
+			// Set initial cursor
+			Platform.runLater(userTextField::requestFocus);
+		}
+
+		@FXML
+		private void registerCheckboxChanged() {
+
+			// Make repeat password field and label visible / invisible
+			repeatPasswordField.setVisible(registerCheckBox.isSelected());
+			repeatPasswordLabel.setVisible(registerCheckBox.isSelected());
+
+			// Clear repeat password field if registration cancelled
+			if (!registerCheckBox.isSelected()) repeatPasswordField.clear();
+		}
+	}
+}

src/main/java/envoy/client/ui/LoginDialogController.java

@@ -1,53 +0,0 @@
-package envoy.client.ui;
-
-import javafx.event.ActionEvent;
-import javafx.fxml.FXML;
-import javafx.scene.Node;
-import javafx.scene.control.CheckBox;
-import javafx.scene.control.Label;
-import javafx.scene.control.PasswordField;
-import javafx.stage.Stage;
-
-/**
- * Project: <strong>envoy-client</strong><br>
- * File: <strong>LoginDialogController.java</strong><br>
- * Created: <strong>03.04.2020</strong><br>
- * 
- * @author Kai S. K. Engelbart
- * @since Envoy Client v0.1-beta
- */
-public final class LoginDialogController {
-
-	@FXML
-	private PasswordField passwordField;
-
-	@FXML
-	private PasswordField repeatPasswordField;
-
-	@FXML
-	private Label repeatPasswordLabel;
-
-	@FXML
-	private CheckBox registerCheckBox;
-
-	@FXML
-	private void registerCheckboxChanged() {
-
-		// Make repeat password field and label visible / invisible
-		repeatPasswordField.setVisible(registerCheckBox.isSelected());
-		repeatPasswordLabel.setVisible(registerCheckBox.isSelected());
-
-		// Clear repeat password field if registration cancelled
-		if (!registerCheckBox.isSelected()) repeatPasswordField.clear();
-	}
-
-	@FXML
-	private void submitButtonClicked() {
-
-	}
-
-	@FXML
-	private void cancelButtonClicked(ActionEvent e) { closeStage(e); }
-
-	private void closeStage(ActionEvent e) { ((Stage) ((Node) e.getSource()).getScene().getWindow()).close(); }
-}

src/main/java/envoy/client/ui/Startup.java

@@ -12,7 +12,6 @@ import javax.swing.JOptionPane;
 import envoy.client.data.*;
 import envoy.client.net.Client;
 import envoy.client.net.WriteProxy;
-import envoy.client.ui.container.LoginDialog;
 import envoy.data.Message;
 import envoy.data.User;
 import envoy.data.User.UserStatus;
@@ -91,9 +90,18 @@ public final class Startup extends Application {
 		// Initialize client and unread message cache
 		client	= new Client();
 		cache	= new Cache<>();
+	}
+
+	/**
+	 * {@inheritDoc}
+	 */
+	@Override
+	public void start(Stage stage) throws Exception {
 
 		// Try to connect to the server
-		new LoginDialog(client, localDB, cache);
+		// new LoginDialog(client, localDB, cache);
+		new LoginDialog().showAndWait();
+		System.exit(0);
 
 		// Set client user in local database
 		localDB.setUser(client.getSender());
@@ -128,13 +136,6 @@ public final class Startup extends Application {
 				.filter(u -> u instanceof User && u != localDB.getUser())
 				.map(User.class::cast)
 				.forEach(u -> u.setStatus(UserStatus.OFFLINE));
-	}
-
-	/**
-	 * {@inheritDoc}
-	 */
-	@Override
-	public void start(Stage stage) throws Exception {
 
 		// Prepare stage and load ChatScene
 		var	loader		= new FXMLLoader(getClass().getResource("ChatScene.fxml"));