update packages

[CreaPhase.git] / octave_packages / m / plot / guidata.m

diff --git a/octave_packages/m/plot/guidata.m b/octave_packages/m/plot/guidata.m
new file mode 100644 (file)
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+++ b/octave_packages/m/plot/guidata.m
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+## Copyright (C) 2012 Michael Goffioul
+##
+## 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 3 of the License, 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, see
+## <http://www.gnu.org/licenses/>.
+
+## -*- texinfo -*-
+## @deftypefn  {Function File} {@var{data} =} guidata (@var{handle})
+## @deftypefnx {Function File} {} guidata (@var{handle}, @var{data})
+## @end deftypefn
+
+## Author: goffioul
+
+function varargout = guidata (varargin)
+
+  if (nargin == 1 || nargin == 2)
+    h = varargin{1};
+    if (ishandle (h))
+      h = ancestor (h, "figure");
+      if (! isempty (h))
+        if (nargin == 1)
+          varargout{1} = get (h, "__guidata__");
+        else
+          data = varargin{2};
+          set (h, "__guidata__", data);
+          if (nargout == 1)
+            varargout{1} = data;
+          endif
+        endif
+      else
+        error ("no ancestor figure found");
+      endif
+    else
+      error ("invalid object handle");
+    endif
+  else
+    print_usage ();
+  endif
+
+endfunction