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## Copyright (C) 2012-2013 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{p}, @var{args}] =} __uiobject_split_args__ (@var{who}, @var{args}, @var{parent_type}, @var{use_gcf})
## @end deftypefn
## Author: goffioul
function [parent, args] = __uiobject_split_args__ (who, in_args, parent_type = {}, use_gcf = 1)
parent = [];
args = {};
offset = 1;
if (! isempty (in_args))
if (ishandle (in_args{1}))
parent = in_args{1};
offset = 2;
elseif (! ischar (in_args{1}))
error ("%s: invalid parent handle.", who);
endif
args = in_args(offset:end);
endif
if (rem (length (args), 2))
error ("%s: expecting PROPERTY/VALUE pairs", who);
endif
if (! isempty (args))
i = find (strcmpi (args(1:2:end), "parent"), 1, "first");
if (! isempty (i) && length (args) >= 2*i)
parent = args{2*i};
if (! ishandle (parent))
error ("%s: invalid parent handle.", who);
endif
args([2*i-1, 2*i]) = [];
endif
endif
if (! isempty (parent))
if (! isempty (parent_type) && isempty (find (strcmpi (get (parent, "type"), parent_type))))
error ("%s: invalid parent, the parent type must be: %s", ...
who, sprintf ("%s, ", parent_type{:})(1:end-2));
endif
elseif (use_gcf)
parent = gcf ();
endif
endfunction
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