From 5c7d71700b8c7cba35fa925f7f4dcba289bb990d Mon Sep 17 00:00:00 2001
From: Trevor Slocum <trevor@rocketnine.space>
Date: Thu, 13 Feb 2020 10:00:20 -0800
Subject: [PATCH] Fix scrolling table with PageDown and PageUp

Resolves #402.
---
 table.go | 18 ++++++++++++++----
 1 file changed, 14 insertions(+), 4 deletions(-)

diff --git a/table.go b/table.go
index 9d0db29..9f6226c 100644
--- a/table.go
+++ b/table.go
@@ -1101,27 +1101,37 @@ func (t *Table) InputHandler() func(event *tcell.EventKey, setFocus func(p Primi
 			}
 
 			pageDown = func() {
+				offsetAmount := t.visibleRows - t.fixedRows
+				if offsetAmount < 0 {
+					offsetAmount = 0
+				}
+
 				if t.rowsSelectable {
-					t.selectedRow += t.visibleRows
+					t.selectedRow += offsetAmount
 					if t.selectedRow >= len(t.cells) {
 						t.selectedRow = len(t.cells) - 1
 					}
 					next()
 				} else {
-					t.rowOffset += t.visibleRows
+					t.rowOffset += offsetAmount
 				}
 			}
 
 			pageUp = func() {
+				offsetAmount := t.visibleRows - t.fixedRows
+				if offsetAmount < 0 {
+					offsetAmount = 0
+				}
+
 				if t.rowsSelectable {
-					t.selectedRow -= t.visibleRows
+					t.selectedRow -= offsetAmount
 					if t.selectedRow < 0 {
 						t.selectedRow = 0
 					}
 					previous()
 				} else {
 					t.trackEnd = false
-					t.rowOffset -= t.visibleRows
+					t.rowOffset -= offsetAmount
 				}
 			}
 		)