From bacba7a6e411b3977af4aac94d6fc042a2ae9986 Mon Sep 17 00:00:00 2001
From: Stephan Diederich <stephan.diederich@gmail.com>
Date: Mon, 22 Nov 2010 15:48:36 +0100
Subject: [PATCH] [Three20UI] fixed restoring to a wrong scrollview offset

when restoring the tableView offset, the maximum offset
can be a number < 0, if the contentSize doesn't fill the
whole tableview. If that's the case, set the maximum scrollOffset
to 0.
---
 src/Three20UI/Sources/TTTableViewController.m | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/Three20UI/Sources/TTTableViewController.m b/src/Three20UI/Sources/TTTableViewController.m
index 9409d68e2e..078118997e 100644
--- a/src/Three20UI/Sources/TTTableViewController.m
+++ b/src/Three20UI/Sources/TTTableViewController.m
@@ -327,7 +327,8 @@ - (BOOL)persistView:(NSMutableDictionary*)state {
 - (void)restoreView:(NSDictionary*)state {
   CGFloat scrollY = [[state objectForKey:@"scrollOffsetY"] floatValue];
   if (scrollY) {
-    CGFloat maxY = _tableView.contentSize.height - _tableView.height;
+    //set to 0 if contentSize is smaller than the tableView.height
+    CGFloat maxY = MAX(0, _tableView.contentSize.height - _tableView.height);
     if (scrollY <= maxY) {
       _tableView.contentOffset = CGPointMake(0, scrollY);