From 2d17254b2c3a95e12bbab506429b9a1c95d816a2 Mon Sep 17 00:00:00 2001
From: Michael Sippel <micha@fragmental.art>
Date: Wed, 11 Aug 2021 17:43:23 +0200
Subject: [PATCH] leveled term view: only notify when level is changed

---
 nested/src/leveled_term_view.rs | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/nested/src/leveled_term_view.rs b/nested/src/leveled_term_view.rs
index 4a7d445..77565dd 100644
--- a/nested/src/leveled_term_view.rs
+++ b/nested/src/leveled_term_view.rs
@@ -57,13 +57,15 @@ impl LeveledTermView {
     }
 
     pub fn set_level(&mut self, l: usize) {
-        self.level = l;
+        if self.level != l {
+            self.level = l;
 
-        // update complete area
-        if let Some(a) = self.src.area() {
-            self.cast.notify_each(a);
+            // update complete area
+            if let Some(a) = self.src.area() {
+                self.cast.notify_each(a);
+            }
         }
-    }    
+    }
 }
 
 impl ImplIndexView for LeveledTermView {