Mercurial > octave
view scripts/gui/isappdata.m @ 27919:1891570abac8
update Octave Project Developers copyright for the new year
In files that have the "Octave Project Developers" copyright notice,
update for 2020.
author | John W. Eaton <jwe@octave.org> |
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date | Mon, 06 Jan 2020 22:29:51 -0500 |
parents | b442ec6dda5c |
children | bd51beb6205e |
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## Copyright (C) 2010-2020 The Octave Project Developers ## ## See the file COPYRIGHT.md in the top-level directory of this distribution ## or <https://octave.org/COPYRIGHT.html/>. ## ## ## 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 ## <https://www.gnu.org/licenses/>. ## -*- texinfo -*- ## @deftypefn {} {@var{valid} =} isappdata (@var{h}, @var{name}) ## Return true if the named application data, @var{name}, exists for the ## graphics object with handle @var{h}. ## ## @var{h} may also be a vector of graphics handles. ## @seealso{getappdata, setappdata, rmappdata, guidata, get, set, getpref, setpref} ## @end deftypefn ## Author: Ben Abbott <bpabbott@mac.com> ## Created: 2010-07-15 function valid = isappdata (h, name) if (nargin < 1 || nargin > 2) print_usage (); endif if (! all (ishghandle (h(:)))) error ("isappdata: H must be a scalar or vector of graphic handles"); elseif (! ischar (name)) error ("isappdata: NAME must be a string"); endif valid = false (size (h)); for i = 1:numel (h) appdata = get (h(i), "__appdata__"); if (isfield (appdata, name)) valid(i) = true; endif endfor endfunction %!test %! unwind_protect %! setappdata (0, "%hello%", "world"); %! assert (isappdata (0, "%hello%"), true); %! assert (isappdata ([0 0], "%hello%"), [true, true]); %! assert (isappdata (0, "%foobar%"), false); %! unwind_protect_cleanup %! rmappdata (0, "%hello%"); %! end_unwind_protect ## Test input validation %!error isappdata () %!error isappdata (1,2,3) %!error <H must be a scalar .* graphic handle> isappdata (-1, "hello") %!error <NAME must be a string> isappdata (0, 1)