dont scroll too far

Closes #11

2 files changed, 5 insertions, 4 deletions

diff --git a/src/buffer/threads.rs b/src/buffer/threads.rs
index 893b4ec..5a87388 100644
--- a/src/buffer/threads.rs
+++ b/src/buffer/threads.rs
@@ -92,7 +92,7 @@ impl Threads {
                 } else {
                     self.i - 1
                 },
-            Key::Char('e') => window.scroll_down(),
+            Key::Char('e') => window.scroll_down(self.threads.len()),
             Key::Char('y') => window.scroll_up(),
             Key::Char('i') => {
                 self.threads[self.i].remove_tag("inbox");
diff --git a/src/window.rs b/src/window.rs
index 68fc258..3714c4c 100644
--- a/src/window.rs
+++ b/src/window.rs
@@ -57,9 +57,10 @@ impl Window {
         Ok(())
     }
 
-    pub fn scroll_down(&mut self) {
-        //TODO check if we're at bottom
-        self.scroll += 1;
+    pub fn scroll_down(&mut self, until: usize) {
+        if self.scroll < until - 1 {
+            self.scroll += 1;
+        }
     }
 
     pub fn scroll_up(&mut self) {