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+++ b/scripts/plot/__uiobject_init_figure__.in
@@ -0,0 +1,58 @@
+## Copyright (C) 2005 John W. Eaton
+##
+## This file is part of Octave.
+##
+## Octave is free software; you can redistribute it and/or modify it
+## under the terms of the GNU General Public License as published by
+## the Free Software Foundation; either version 2, or (at your option)
+## any later version.
+##
+## Octave is distributed in the hope that it will be useful, but
+## WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+## General Public License for more details.
+##
+## You should have received a copy of the GNU General Public License
+## along with Octave; see the file COPYING.  If not, write to the Free
+## Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+## 02110-1301, USA.
+
+## -*- texinfo -*-
+## @deftypefn {Function File} {@var{f} =} __uiobject_init_figure__ (@var{f})
+## Create figure in __uiobject_list__ and make it the current figure.
+## If @var{f} already exists, make it the current figure but don't
+## reinitialize it.  If @var{f} is not specified, allocate a new
+## figure handle and initialize it.
+## @end deftypefn
+
+## Author: jwe
+
+function f = __uiobject_init_figure__ (f)
+
+  __uiobject_globals__;
+
+  if (nargin == 0 || nargin == 1)
+
+    if (nargin == 0)
+      if (isempty (__uiobject_figure_handles_free_list__))
+	f = max (__uiobject_handles__) + 1;
+      else
+	f = __uiobject_figure_handles_free_list__(1);
+	__uiobject_figure_handles_free_list__(1) = [];
+      endif
+    endif
+
+    __uiobject_handles__ = union (__uiobject_handles__, f);
+
+    if (! ishandle (f))
+      idx = __uiobject_alloc__ ();
+      __uiobject_list__(idx).handle = f;
+      __uiobject_list__(idx).object = __uiobject_figure_ctor__ ();
+      __uiobject_adopt__ (0, f);
+    endif
+    set (0, "currentfigure", f);
+  else
+    print_usage ();
+  endif
+
+endfunction