input validation for vpa

1 files changed, 7 insertions, 0 deletions

diff --git a/src/grid.rs b/src/grid.rs
index f5d75b3..021a787 100644
--- a/src/grid.rs
+++ b/src/grid.rs
@@ -540,6 +540,7 @@ impl Grid {
 
     pub fn row_set(&mut self, i: u16) {
         self.pos.row = i;
+        self.row_clamp();
     }
 
     pub fn col_inc(&mut self, count: u16) {
@@ -599,6 +600,12 @@ impl Grid {
         }
     }
 
+    fn row_clamp(&mut self) {
+        if self.pos.row > self.size.rows - 1 {
+            self.pos.row = self.size.rows - 1;
+        }
+    }
+
     fn col_clamp(&mut self) {
         if self.pos.col > self.size.cols - 1 {
             self.pos.col = self.size.cols - 1;