From 3407c31bebdf9eafa5f3d7fcfe286ec68619174d Mon Sep 17 00:00:00 2001
From: Chris Shoemaker <c.shoemaker@cox.net>
Date: Thu, 9 Feb 2006 01:47:26 +0000
Subject: [PATCH]    Factor out an "approved" method for getting the
 GtkCellRenderer from a    GtkTreeViewColumn that's been added to a
 GncTreeView with one of the    convenience functions.

git-svn-id: svn+ssh://svn.gnucash.org/repo/gnucash/trunk@13156 57a11ea4-9604-0410-9ed3-97b8803252fd
---
 src/gnome-utils/gnc-tree-view.c | 23 ++++++++++++++++++-----
 src/gnome-utils/gnc-tree-view.h | 10 ++++++++++
 2 files changed, 28 insertions(+), 5 deletions(-)

diff --git a/src/gnome-utils/gnc-tree-view.c b/src/gnome-utils/gnc-tree-view.c
index 36c83f7b43..43c9c798b4 100644
--- a/src/gnome-utils/gnc-tree-view.c
+++ b/src/gnome-utils/gnc-tree-view.c
@@ -1999,6 +1999,23 @@ gnc_tree_view_add_combo_column (GncTreeView *view,
 }
 #endif
 
+GtkCellRenderer *
+gnc_tree_view_column_get_renderer(GtkTreeViewColumn *column)
+{
+  GList *renderers;
+  GtkCellRenderer *cr = NULL;
+
+  g_return_val_if_fail(GTK_TREE_VIEW_COLUMN(column), NULL);
+
+  /* Get the list of one renderer */
+  renderers = gtk_tree_view_column_get_cell_renderers(column);
+  if (g_list_length(renderers) > 0)
+      cr = GTK_CELL_RENDERER(renderers->data);
+  g_list_free(renderers);
+  
+  return cr;
+}
+
 /** This function adds a new numeric column to a GncTreeView base
  *  view.  It takes all the parameters necessary to hook a
  *  GtkTreeModel column to a GtkTreeViewColumn.  If the tree has a
@@ -2021,17 +2038,13 @@ gnc_tree_view_add_numeric_column (GncTreeView *view,
 {
   GtkTreeViewColumn *column;
   GtkCellRenderer *renderer;
-  GList *renderers;
 
   column = gnc_tree_view_add_text_column (view, column_title, pref_name,
 					  NULL, sizing_text, model_data_column,
 					  model_visibility_column,
 					  column_sort_fn);
 
-  /* Get the list of one renderer */
-  renderers = gtk_tree_view_column_get_cell_renderers(column);
-  renderer = renderers->data;
-  g_list_free(renderers);
+  renderer = gnc_tree_view_column_get_renderer(column);
 
   /* Right align the column title and data */
   g_object_set(G_OBJECT(column), "alignment",   1.0, NULL);
diff --git a/src/gnome-utils/gnc-tree-view.h b/src/gnome-utils/gnc-tree-view.h
index 96660fae9a..cef568ce00 100644
--- a/src/gnome-utils/gnc-tree-view.h
+++ b/src/gnome-utils/gnc-tree-view.h
@@ -359,6 +359,16 @@ gnc_tree_view_set_show_column_menu (GncTreeView *view,
 gboolean
 gnc_tree_view_get_show_column_menu (GncTreeView *view);
 
+/** Return the "main" cell renderer from a GtkTreeViewColumn added to
+ *  a GncTreeView my one of the convenience routines.
+ *
+ *  @param column The tree view column that was added to the GncTreeView
+ *
+ *  @returns The cell renderer in use in the column.
+ */
+GtkCellRenderer *
+gnc_tree_view_column_get_renderer(GtkTreeViewColumn *column);
+
 /** @} */
 
 /** @} */