Fix updating input fields on editing end without changes

Fixes #197

Source/Editor/GUI/Input/ValueBox.cs

@@ -49,6 +49,11 @@ namespace FlaxEditor.GUI.Input
         /// </summary>
         protected T _startSlideValue;
 
+        /// <summary>
+        /// The text cached on editing start. Used to compare with the end result to detect changes.
+        /// </summary>
+        protected string _startEditText;
+
         private Vector2 _startSlideLocation;
 
         /// <summary>
@@ -257,11 +262,23 @@ namespace FlaxEditor.GUI.Input
             return base.OnMouseUp(location, button);
         }
 
+        /// <inheritdoc />
+        protected override void OnEditBegin()
+        {
+            base.OnEditBegin();
+
+            _startEditText = _text;
+        }
+
         /// <inheritdoc />
         protected override void OnEditEnd()
         {
-            // Update value
-            TryGetValue();
+            if (_startEditText != _text)
+            {
+                // Update value
+                TryGetValue();
+            }
+            _startEditText = null;
 
             base.OnEditEnd();
         }

Source/Engine/UI/GUI/Common/TextBoxBase.cs

@@ -942,6 +942,8 @@ namespace FlaxEngine.GUI
         {
             base.OnLostFocus();
 
+            if (IsReadOnly)
+                return;
             OnEditEnd();
         }