From 1432e958900f9bdafa784bd0bf8b95a148c06ee0 Mon Sep 17 00:00:00 2001
From: robertmh <robertmh@localhost>
Date: Sat, 1 Nov 2008 12:42:27 +0000
Subject: [PATCH] 2008-11-01  Carles Pina i Estany  <carles@pina.cat>

        * normal/menu.c (run_menu): Add Previous and Next Page keys in menu.
---
 ChangeLog     |  4 ++++
 normal/menu.c | 51 +++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 55 insertions(+)

diff --git a/ChangeLog b/ChangeLog
index 430a37b78..efc26e947 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+2008-11-01  Carles Pina i Estany  <carles@pina.cat>
+
+	* normal/menu.c (run_menu): Add Previous and Next Page keys in menu.
+
 2008-10-29  Guillem Jover <guillem.jover@nokia.com>
 
 	* disk/lvm.c (grub_lvm_scan_device): Fix error recovery by delaying the
diff --git a/normal/menu.c b/normal/menu.c
index d6fc0a33e..103aa6f15 100644
--- a/normal/menu.c
+++ b/normal/menu.c
@@ -457,6 +457,57 @@ run_menu (grub_menu_t menu, int nested)
 		    }
 		}
 	      break;
+	    
+	    case GRUB_TERM_PPAGE:
+	      if (first == 0)
+		{
+		  offset = 0;
+		}
+	      else
+		{
+		  first -= GRUB_TERM_NUM_ENTRIES;
+
+		  if (first < 0)
+		    {
+		      offset += first;
+		      first = 0;
+		    }
+		}
+	      print_entries (menu, first, offset);
+	      break;
+
+	    case GRUB_TERM_NPAGE:
+	      if (offset == 0)
+		{
+		  offset += GRUB_TERM_NUM_ENTRIES - 1;
+		  if (first + offset >= menu->size)
+		    {
+		      offset = menu->size - first - 1;
+		    }
+		}
+	      else
+		{
+		  first += GRUB_TERM_NUM_ENTRIES;
+			
+		  if (first + offset >= menu->size)
+		    {
+		      first -= GRUB_TERM_NUM_ENTRIES;
+		      offset += GRUB_TERM_NUM_ENTRIES;
+		      
+		      if (offset > menu->size - 1 ||
+		                     offset > GRUB_TERM_NUM_ENTRIES - 1)
+			{
+			  offset = menu->size - first - 1;
+			}
+		      if (offset > GRUB_TERM_NUM_ENTRIES)
+		        {
+			  first += offset - GRUB_TERM_NUM_ENTRIES + 1;
+			  offset = GRUB_TERM_NUM_ENTRIES - 1;
+			}
+		    }
+		}
+	      print_entries (menu, first, offset);
+	      break;
 	      
 	    case '\n':
 	    case '\r':