rather add functionality to formattedLabel class than to extend it

main/ui/src/main/java/org/cryptomator/ui/controls/FormattedLabel.java

@@ -12,6 +12,7 @@ public class FormattedLabel extends Label {
 
 	private final StringProperty format = new SimpleStringProperty("");
 	private final ObjectProperty<Object> arg1 = new SimpleObjectProperty<>();
+	private final ObjectProperty<Object> arg2 = new SimpleObjectProperty<>();
 	// add arg2, arg3, ... on demand
 
 	public FormattedLabel() {
@@ -19,11 +20,11 @@ public class FormattedLabel extends Label {
 	}
 
 	protected StringBinding createStringBinding() {
-		return Bindings.createStringBinding(this::updateText, format, arg1);
+		return Bindings.createStringBinding(this::updateText, format, arg1, arg2);
 	}
 
 	private String updateText() {
-		return String.format(format.get(), arg1.get());
+		return String.format(format.get(), arg1.get(), arg2.get());
 	}
 
 	/* Observables */
@@ -51,4 +52,16 @@ public class FormattedLabel extends Label {
 	public void setArg1(Object arg1) {
 		this.arg1.set(arg1);
 	}
+
+	public ObjectProperty<Object> arg2Property() {
+		return arg2;
+	}
+
+	public Object getArg2() {
+		return arg2.get();
+	}
+
+	public void setArg2(Object arg2) {
+		this.arg2.set(arg2);
+	}
 }

main/ui/src/main/java/org/cryptomator/ui/controls/FormattedLabel2.java

@@ -1,39 +0,0 @@
-package org.cryptomator.ui.controls;
-
-import javafx.beans.binding.Bindings;
-import javafx.beans.binding.StringBinding;
-import javafx.beans.property.ObjectProperty;
-import javafx.beans.property.SimpleObjectProperty;
-
-public class FormattedLabel2 extends FormattedLabel {
-
-	private final ObjectProperty<Object> arg2 = new SimpleObjectProperty<>();
-
-	public FormattedLabel2() {
-		textProperty().unbind();
-		textProperty().bind(createStringBinding2());
-	}
-
-	private StringBinding createStringBinding2() {
-		return Bindings.createStringBinding(this::updateText, formatProperty(), arg1Property(), arg2);
-	}
-
-	private String updateText() {
-		return String.format(getFormat(), getArg1(), arg2.get());
-	}
-
-	/* Getter & Setter */
-
-	public ObjectProperty<Object> arg2Property() {
-		return arg2;
-	}
-
-	public Object getArg2() {
-		return arg2.get();
-	}
-
-	public void setArg2(Object arg2) {
-		this.arg2.set(arg2);
-	}
-
-}

main/ui/src/main/resources/fxml/health_check_details.fxml

@@ -4,7 +4,6 @@
 <?import javafx.scene.control.Label?>
 <?import javafx.scene.control.ListView?>
 <?import javafx.scene.layout.VBox?>
-<?import org.cryptomator.ui.controls.FormattedLabel2?>
 <VBox xmlns:fx="http://javafx.com/fxml"
 	  xmlns="http://javafx.com/javafx"
 	  fx:controller="org.cryptomator.ui.health.CheckDetailController"
@@ -18,7 +17,7 @@
 	<Label text="%health.check.detail.taskFailed" visible="${controller.taskFailed}" managed="${controller.taskFailed}"/>
 	<FormattedLabel styleClass="label" format="%health.check.detail.taskSucceeded" arg1="${controller.taskDuration}" visible="${controller.taskSucceeded}" managed="${controller.taskSucceeded}"/>
 
-	<FormattedLabel2 styleClass="label" format="%health.check.detail.problemCount" arg1="${controller.countOfWarnSeverity}" arg2="${controller.countOfCritSeverity}" visible="${!controller.taskNotStarted}"
+	<FormattedLabel styleClass="label" format="%health.check.detail.problemCount" arg1="${controller.countOfWarnSeverity}" arg2="${controller.countOfCritSeverity}" visible="${!controller.taskNotStarted}"
 					 managed="${!controller.taskNotStarted}"	/>
 	<ListView fx:id="resultsListView" VBox.vgrow="ALWAYS"/>
 </VBox>