Insanely huge initial commit

Assets/Extensions/Modern UI Pack/Scripts/Demo/InputSystemChecker.cs

@@ -0,0 +1,25 @@
+using UnityEngine;
+using UnityEngine.EventSystems;
+#if ENABLE_INPUT_SYSTEM
+using UnityEngine.InputSystem;
+using UnityEngine.InputSystem.UI;
+#endif
+
+namespace Michsky.MUIP
+{
+    public class InputSystemChecker : MonoBehaviour
+    {
+        void Awake()
+        {
+#if ENABLE_INPUT_SYSTEM && !ENABLE_LEGACY_INPUT_MANAGER
+            InputSystemUIInputModule tempModule = gameObject.GetComponent<InputSystemUIInputModule>();
+
+            if (tempModule == null)
+            {
+                Debug.LogError("<b>[Modern UI Pack]</b> Input System is enabled, but <b>'Input System UI Input Module'</b> is missing. " +
+                    "Select the event system object, and click the <b>'Replace'</b> button.");
+            }
+#endif
+        }
+    }
+}