[gitg] Record maxlines in diff request

[Jesse van den Kieboom <jessevdk src gnome org>]

commit 3d4ccf2a594f33efcbd22272b01183ad2a8b53d7
Author: Jesse van den Kieboom <jessevdk gmail com>
Date:   Sat Mar 2 14:29:08 2013 +0100

    Record maxlines in diff request

 libgitg-gtk/gitg-gtk-diff-view-request-diff.vala |   13 +++++++++++++
 1 files changed, 13 insertions(+), 0 deletions(-)
---
diff --git a/libgitg-gtk/gitg-gtk-diff-view-request-diff.vala 
b/libgitg-gtk/gitg-gtk-diff-view-request-diff.vala
index 4e14aa5..408c734 100644
--- a/libgitg-gtk/gitg-gtk-diff-view-request-diff.vala
+++ b/libgitg-gtk/gitg-gtk-diff-view-request-diff.vala
@@ -226,6 +226,7 @@ namespace GitgGtk
                        builder.set_member_name("diff").begin_array();
 
                        int64 numlines = 0;
+                       int64 maxlines = 0;
 
                        diff.foreach(
                                (delta, progress) => {
@@ -244,6 +245,16 @@ namespace GitgGtk
                                                return 1;
                                        }
 
+                                       var maxold = range.get_old_start() + range.get_old_lines();
+                                       var maxnew = range.get_new_start() + range.get_new_lines();
+
+                                       var ml = int64.max(maxold, maxnew);
+
+                                       if (ml > maxlines)
+                                       {
+                                               maxlines = ml;
+                                       }
+
                                        hunk_cb(builder, state, delta, range, ((string)header).substring(0, 
header.length));
                                        return 0;
                                },
@@ -257,6 +268,7 @@ namespace GitgGtk
                                        if (delta.get_binary() != 1)
                                        {
                                                ++numlines;
+
                                                line_cb(builder, delta, range, line_type, 
((string)content).substring(0, content.length));
                                        }
 
@@ -283,6 +295,7 @@ namespace GitgGtk
 
                        builder.end_array();
                        builder.set_member_name("lines").add_int_value(numlines);
+                       builder.set_member_name("maxlines").add_int_value(maxlines);
                }
 
                private void build_commit(Ggit.Diff? diff, Json.Builder builder, Cancellable? cancellable)