Huge refactoring of state and initial UI setup

UI/Input/Toggle.ts

@@ -1,6 +1,7 @@
 import {UIEventSource} from "../../Logic/UIEventSource";
 import BaseUIElement from "../BaseUIElement";
 import {VariableUiElement} from "../Base/VariableUIElement";
+import Lazy from "../Base/Lazy";
 
 /**
  * The 'Toggle' is a UIElement showing either one of two elements, depending on the state.
@@ -24,4 +25,16 @@ export default class Toggle extends VariableUiElement {
         })
         return this;
     }
+
+   public static If(condition: UIEventSource<boolean>, constructor: () => BaseUIElement): BaseUIElement {
+        if(constructor === undefined){
+            return undefined
+        }
+        return new Toggle(
+            new Lazy(constructor),
+            undefined,
+            condition
+        )
+        
+    }
 }