[gtk+] a11y: Split out function

[Benjamin Otte <otte src gnome org>]

commit 3badf48d2ed8bb332fd42855c3e1fedf97c6bee7
Author: Benjamin Otte <otte redhat com>
Date:   Mon Dec 12 10:24:53 2011 +0100

    a11y: Split out function
    
    I want to use that function when sending notifications. See next
    commits.

 gtk/a11y/gtktreeviewaccessible.c |   35 ++++++++++++++++++++++++++---------
 1 files changed, 26 insertions(+), 9 deletions(-)
---
diff --git a/gtk/a11y/gtktreeviewaccessible.c b/gtk/a11y/gtktreeviewaccessible.c
index ccdc872..f959392 100644
--- a/gtk/a11y/gtktreeviewaccessible.c
+++ b/gtk/a11y/gtktreeviewaccessible.c
@@ -2629,28 +2629,45 @@ cell_info_new (GtkTreeViewAccessible *accessible,
 }
 
 static GtkCellAccessible *
+peek_cell (GtkTreeViewAccessible *accessible,
+           GtkRBTree             *tree,
+           GtkRBNode             *node,
+           GtkTreeViewColumn     *column)
+{
+  GtkTreeViewAccessibleCellInfo lookup, *cell_info;
+
+  lookup.tree = tree;
+  lookup.node = node;
+  lookup.cell_col_ref = column;
+
+  cell_info = g_hash_table_lookup (accessible->cell_infos, &lookup);
+  if (cell_info == NULL)
+    return NULL;
+
+  return cell_info->cell;
+}
+
+static GtkCellAccessible *
 find_cell (GtkTreeViewAccessible *accessible,
            gint                   index)
 {
-  GtkTreeViewAccessibleCellInfo lookup, *cell_info;
   GtkTreeView *tree_view;
+  GtkRBTree *tree;
+  GtkRBNode *node;
 
   tree_view = GTK_TREE_VIEW (gtk_accessible_get_widget (GTK_ACCESSIBLE (accessible)));
 
   if (!_gtk_rbtree_find_index (_gtk_tree_view_get_rbtree (tree_view),
                                index / get_n_columns (tree_view) - 1,
-                               &lookup.tree,
-                               &lookup.node))
+                               &tree,
+                               &node))
     {
       g_assert_not_reached ();
     }
-  lookup.cell_col_ref = get_visible_column (tree_view, index % get_n_columns (tree_view));
 
-  cell_info = g_hash_table_lookup (accessible->cell_infos, &lookup);
-  if (cell_info == NULL)
-    return NULL;
-
-  return cell_info->cell;
+  return peek_cell (accessible,
+                    tree, node, 
+                    get_visible_column (tree_view, index % get_n_columns (tree_view)));
 }
 
 static void