From a1cea37cea5c74248ca625d68761f95a60a57848 Mon Sep 17 00:00:00 2001
From: Braiden Vasco <braiden-vasco@users.noreply.github.com>
Date: Fri, 21 Jul 2017 12:25:17 +0000
Subject: [PATCH] Implement scrolling

---
 lib/main.rb | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/lib/main.rb b/lib/main.rb
index c939e11..bd0557e 100644
--- a/lib/main.rb
+++ b/lib/main.rb
@@ -83,6 +83,12 @@ private
       @active += 1
       @active = 0 if @active >= @items.count
     end
+
+    if @active < @top
+      @top = @active
+    elsif @active >= @top + @height
+      @top = @active - @height + 1
+    end
   end
 
   def render