From 88369b9b2424ef2a1ce42c95f1562ff5e3454529 Mon Sep 17 00:00:00 2001
From: chmanie <code@chmanie.com>
Date: Sat, 27 May 2023 22:14:41 +0200
Subject: [PATCH] Fix up/down index overflow

---
 cbd-tui/src/main.rs | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/cbd-tui/src/main.rs b/cbd-tui/src/main.rs
index 12d4074..9205842 100644
--- a/cbd-tui/src/main.rs
+++ b/cbd-tui/src/main.rs
@@ -71,7 +71,7 @@ trait ListView {
             return;
         }
         if let Some(i) = self.selected() {
-            let next = if i < self.get_size() - 15 {
+            let next = if i < self.get_size().saturating_sub(15) {
                 i + 15
             } else {
                 self.get_size() - 1
@@ -87,7 +87,7 @@ trait ListView {
             return;
         }
         if let Some(i) = self.selected() {
-            let prev = if i < 15 { 0 } else { i - 15 };
+            let prev = if i < 15 { 0 } else { i.saturating_sub(15) };
             self.select(Some(prev));
         } else {
             self.select(Some(0));
@@ -446,7 +446,8 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
 
     tokio::task::spawn_blocking(|| {
         run_ui(ui_tx, ui_rx);
-    }).await;
+    })
+    .await;
 
     Ok(())
 }