Fix: Controllers contain no data

Vocaluxe.UI/BasicElements/Button/CUiElementButton.cs

@@ -5,9 +5,14 @@ namespace Vocaluxe.UI.BasicElements.Button
 {
     public class CUiElementButton:CUiElement
     {
-        public CControllerElementButton Controller => new CControllerElementButton();
+        public CControllerElementButton Controller { get; private set; }
         public override CController BasicController => Controller;
 
+        public CUiElementButton()
+        {
+            Controller = new CControllerElementButton();
+        }
+
         public static CUiElementButton CreateInstance(Dictionary<string, string> properties, IEnumerable<(CUiElement, string)> children)
         {
             return CUiElement.CreateInstance<CUiElementButton>(properties, children);

Vocaluxe.UI/BasicElements/Text/CUiElementText.cs

@@ -5,9 +5,14 @@ namespace Vocaluxe.UI.BasicElements.Text
 {
     public class CUiElementText:CUiElement
     {
-        public CControllerElementText Controller => new CControllerElementText();
+        public CControllerElementText Controller { get; private set; }
         public override CController BasicController => Controller;
 
+        public CUiElementText()
+        {
+            Controller = new CControllerElementText();
+        }
+
         public static CUiElementText CreateInstance(Dictionary<string, string> properties, IEnumerable<(CUiElement uiElement, string bindingId)> children)
         {
             var instance = CUiElement.CreateInstance<CUiElementText>(properties, children);

Vocaluxe.UI/Screens/ScreenMain/CUiScreenMain.cs

@@ -5,9 +5,14 @@ namespace Vocaluxe.UI.Screens.ScreenMain
 {
     public class CUiScreenMain:CUiScreen
     {
-        public CControllerScreenMain Controller => new CControllerScreenMain();
+        public CControllerScreenMain Controller { get; private set; }
         public override CController BasicController => Controller;
 
+        public CUiScreenMain()
+        {
+            Controller = new CControllerScreenMain();
+        }
+
         public static CUiScreen CreateInstance(Dictionary<string, string> properties, IEnumerable<(CUiElement uiElement, string bindingId)> children)
         {
             return CUiElement.CreateInstance<CUiScreenMain>(properties, children);