Added SettingsScene selection infrastructure

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

@@ -0,0 +1,19 @@
+package envoy.client.ui;
+
+import javafx.scene.Node;
+
+
+/**
+ * Project: <strong>envoy-client</strong><br>
+ * File: <strong>SettingsPane.java</strong><br>
+ * Created: <strong>18.04.2020</strong><br>
+ * 
+ * @author Kai S. K. Engelbart
+ * @since Envoy Client v0.1-beta
+ */
+public abstract class SettingsPane extends Node {
+
+	protected String title;
+
+	public abstract String getTitle();
+}

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

@@ -1,5 +1,10 @@
 package envoy.client.ui;
 
+import javafx.fxml.FXML;
+import javafx.scene.control.*;
+
+import envoy.client.data.Settings;
+
 /**
  * Project: <strong>envoy-client</strong><br>
  * File: <strong>SettingsSceneController.java</strong><br>
@@ -10,4 +15,27 @@ package envoy.client.ui;
  */
 public class SettingsSceneController {
 
+	@FXML
+	private ListView<SettingsPane> settingsList;
+
+	@FXML
+	private TitledPane titledPane;
+
+	private static final Settings settings = Settings.getInstance();
+
+	@FXML
+	private void initialize() {
+		settingsList.setCellFactory(listView -> new ListCell<>() {
+
+			@Override
+			protected void updateItem(SettingsPane item, boolean empty) { if (!empty && item != null) setGraphic(new Label(item.getTitle())); };
+		});
+	}
+
+	@FXML
+	private void settingsListClicked() {
+		final var pane = settingsList.getSelectionModel().getSelectedItem();
+		titledPane.setText(pane.getTitle());
+		titledPane.setContent(pane);
+	}
 }