From 1143f7eb439048a7be5b2c8126a21c02a12e8ab2 Mon Sep 17 00:00:00 2001
From: Xin Yao <singerdmx@gmail.com>
Date: Tue, 14 Sep 2021 20:49:11 -0700
Subject: [PATCH] Swapping handles order is prevented

---
 lib/src/widgets/text_selection.dart | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/src/widgets/text_selection.dart b/lib/src/widgets/text_selection.dart
index f11a42c4..833a21e9 100644
--- a/lib/src/widgets/text_selection.dart
+++ b/lib/src/widgets/text_selection.dart
@@ -407,6 +407,10 @@ class _TextSelectionHandleOverlayState
         break;
     }
 
+    if (newSelection.baseOffset >= newSelection.extentOffset) {
+      return; // don't allow order swapping.
+    }
+
     widget.onSelectionHandleChanged(newSelection);
   }