From ba8a50e0b957ffde1fa32ef28bc5d6d9053038c8 Mon Sep 17 00:00:00 2001
From: Theophile Terraz <theophile.terraz@inrae.fr>
Date: Fri, 19 Sep 2025 16:03:23 +0200
Subject: [PATCH] debug frictions

---
 src/View/Frictions/UndoCommand.py | 24 +++++++++++++++---------
 1 file changed, 15 insertions(+), 9 deletions(-)

diff --git a/src/View/Frictions/UndoCommand.py b/src/View/Frictions/UndoCommand.py
index 14d6395b..dc060f00 100644
--- a/src/View/Frictions/UndoCommand.py
+++ b/src/View/Frictions/UndoCommand.py
@@ -151,6 +151,7 @@ class ReplaceDataCommand(QUndoCommand):
         self._new_data = new_data
         self._old_rows = list(range(len(frictions)))
         self._new_rows = list(range(len(new_data)))
+        self._new = []
 
         self._old_friction = []
         for row in self._old_rows:
@@ -162,15 +163,20 @@ class ReplaceDataCommand(QUndoCommand):
             self._frictions.insert(row, el)
 
     def redo(self):
-        self._frictions.delete_i(self._old_rows)
-        for row in self._new_rows:
-            new = self._frictions.new(row)
-            d = self._new_data[row]
-            new.edge = d[0]
-            new.begin_rk = d[1]
-            new.end_rk = d[2]
-            new.begin_strickler = d[3]
-            new.end_strickler = d[4]
+        if len(self._new) == 0:
+            self._frictions.delete_i(self._old_rows)
+            for row in self._new_rows:
+                new = self._frictions.new(row)
+                d = self._new_data[row]
+                new.edge = d[0]
+                new.begin_rk = d[1]
+                new.end_rk = d[2]
+                new.begin_strickler = d[3]
+                new.end_strickler = d[4]
+                self._new.append((row, new))
+        else:
+            for row, el in self._new:
+                self._frictions.insert(row, el)
 
 
 class DelCommand(QUndoCommand):