Keep quantity focused after purchase

Patches/FocusTradeQuantityPatch.cs

@@ -0,0 +1,26 @@
+using Aki.Reflection.Patching;
+using EFT.UI;
+using HarmonyLib;
+using System.Reflection;
+using TMPro;
+
+namespace UIFixes
+{
+    public class FocusTradeQuantityPatch : ModulePatch
+    {
+        protected override MethodBase GetTargetMethod()
+        {
+            return AccessTools.Method(typeof(BarterSchemePanel), nameof(BarterSchemePanel.method_10));
+        }
+
+        // Gets called on the TransactionChanged event. 
+        // The reason quantity isn't focused on the 2nd+ purchase is that BSG calls ActivateInputField() and Select() before the transaction is finished
+        // During the transaction, the whole canvas group is not interactable, and these methods don't work on non-interactable fields
+        [PatchPostfix]
+        public static void Postfix(TMP_InputField ____quantity)
+        {
+            ____quantity.ActivateInputField();
+            ____quantity.Select();
+        }
+    }
+}

Plugin.cs

@@ -41,6 +41,7 @@ namespace UIFixes
             TradingAutoSwitchPatches.Enable();
             AddOfferRememberAutoselectPatches.Enable();
             KeepMessagesOpenPatches.Enable();
+            new FocusTradeQuantityPatch().Enable();
         }
 
         public static bool InRaid()