[gtkmm] TreeView: Removed unused TreeView::_get_base_model() method.

[Murray Cumming <murrayc src gnome org>]

commit 8073fc59effc57669fa0a183aa436f05dfd7def3
Author: Murray Cumming <murrayc murrayc com>
Date:   Wed Mar 16 12:35:59 2011 +0100

    TreeView: Removed unused TreeView::_get_base_model() method.
    
    * gtk/src/treeview.[hg|ccg]: As suggested by Kjell Ahlstedt in
    https://bugzilla.gnome.org/show_bug.cgi?id=582981#c16

 ChangeLog            |    7 +++++++
 gtk/src/treeview.ccg |   24 ++----------------------
 gtk/src/treeview.hg  |    9 +++------
 3 files changed, 12 insertions(+), 28 deletions(-)
---
diff --git a/ChangeLog b/ChangeLog
index 1405f1f..073834e 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2011-03-16  Murray Cumming  <murrayc murrayc-desktop>
+
+	TreeView: Removed unused TreeView::_get_base_model() method.
+
+	* gtk/src/treeview.[hg|ccg]: As suggested by Kjell Ahlstedt in
+	https://bugzilla.gnome.org/show_bug.cgi?id=582981#c16
+
 2010-12-27  Luca Wehrstedt  <lerks users sourceforge net>
 
 	Make TreeModelFilter behave like TreeModelSort.
diff --git a/gtk/src/treeview.ccg b/gtk/src/treeview.ccg
index d2af055..f9ea1bd 100644
--- a/gtk/src/treeview.ccg
+++ b/gtk/src/treeview.ccg
@@ -163,7 +163,7 @@ void TreeView::enable_model_drag_source(Gdk::ModifierType start_button_mask, Gdk
   std::vector<TargetEntry> targets (1, TargetEntry (treeview_target_row));
 
   enable_model_drag_source(targets, start_button_mask, actions);
-}    
+}
 
 void TreeView::enable_model_drag_dest(const std::vector<TargetEntry>& targets, Gdk::DragAction actions)
 {
@@ -334,26 +334,6 @@ void TreeView::reset_expander_column()
   gtk_tree_view_set_expander_column(gobj(), 0 /* see C docs */);
 }
 
-Glib::RefPtr<Gtk::TreeModel> TreeView::_get_base_model()
-{
-  Glib::RefPtr<TreeModel> refModel = get_model();
-
-  bool get_child = true;
-  while(get_child && refModel)
-  {
-    Glib::RefPtr<Gtk::TreeModelFilter> refModelFilter = Glib::RefPtr<Gtk::TreeModelFilter>::cast_dynamic(refModel);
-    Glib::RefPtr<Gtk::TreeModelSort> refModelSort = Glib::RefPtr<Gtk::TreeModelSort>::cast_dynamic(refModel);
-    if(refModelFilter)
-      refModel = refModelFilter->get_model();
-    else if(refModelSort)
-      refModel = refModelSort->get_model();
-    else
-      get_child = false;
-  }
-
-  return refModel;
-}
-
 void TreeView::_auto_store_on_cellrenderer_toggle_edited(const Glib::ustring& path_string,
                                                          int model_column)
 {
@@ -479,7 +459,7 @@ bool TreeView::is_blank_at_pos(int x, int y, TreePath& path, TreeViewColumn*& co
   GtkTreePath* cpath = 0;
   GtkTreeViewColumn* pcolumn = 0;
   const bool result = gtk_tree_view_is_blank_at_pos(const_cast<GtkTreeView*>(gobj()), x, y, &cpath, &pcolumn, &(cell_x), &(cell_y));
-  
+
   path = TreePath(cpath, false /* take ownership instead of taking a copy */);
   column = Glib::wrap(pcolumn);
   return result;
diff --git a/gtk/src/treeview.hg b/gtk/src/treeview.hg
index 6320916..1481976 100644
--- a/gtk/src/treeview.hg
+++ b/gtk/src/treeview.hg
@@ -547,14 +547,14 @@ public:
 
    bool get_visible_range(TreeModel::Path& start_path, TreeModel::Path& end_path) const;
   _IGNORE(gtk_tree_view_get_visible_range)
-  
+
   //TODO: Documentation
   bool is_blank_at_pos(int x, int y, TreePath& path, TreeViewColumn*& column, int& cell_x, int& cell_y) const;
   _IGNORE(gtk_tree_view_is_blank_at_pos)
-  
+
   //TODO: Documentation
   bool is_blank_at_pos(int x, int y) const;
-                                                                    
+
 
 /* Drag-and-Drop support */
   _IGNORE(gtk_tree_view_enable_model_drag_source)
@@ -809,9 +809,6 @@ _CONVERSION(`GtkTreeIter*',`const TreeModel::iterator&',`TreeModel::iterator(gtk
   _WRAP_PROPERTY("enable-tree-lines", bool)
   _WRAP_PROPERTY("tooltip-column", int)
 
-  /// Get the treeview's model, but actually get the child model while it's a TreeModelFilter or TreeModelSort.
-  Glib::RefPtr<Gtk::TreeModel> _get_base_model();
-
 protected:
 
 #ifndef DOXYGEN_SHOULD_SKIP_THIS