add text input and properly center text

1 files changed, 13 insertions, 0 deletions

diff --git a/go/ui/buffer.go b/go/ui/buffer.go
index c451d7fc..e95102fe 100644
--- a/go/ui/buffer.go
+++ b/go/ui/buffer.go
@@ -64,3 +64,16 @@ func (b *Buffer) Remove(idx int) {
 	b.lines = append(b.lines[:idx], b.lines[idx+1:]...)
 	b.ForceRedraw()
 }
+
+func (b *Buffer) Scroll(x, y int) {
+	if y == 0 {
+		return
+	}
+
+	if y < 0 && b.pos > 0 {
+		b.pos--
+	} else if y > 0 && b.pos < len(b.lines)-1 {
+		b.pos++
+	}
+	b.ForceRedraw()
+}