Mercurial > octave
view scripts/gui/getappdata.m @ 31206:7ae0a0772e9d
maint: merge stable to default
author | Arun Giridhar <arungiridhar@gmail.com> |
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date | Sun, 28 Aug 2022 12:21:36 -0400 |
parents | 796f54d4ddbf |
children | 597f3ee61a48 |
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######################################################################## ## ## Copyright (C) 2010-2022 The Octave Project Developers ## ## See the file COPYRIGHT.md in the top-level directory of this ## distribution or <https://octave.org/copyright/>. ## ## 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{value} =} getappdata (@var{h}, @var{name}) ## @deftypefnx {} {@var{appdata} =} getappdata (@var{h}) ## Return the @var{value} of the application data @var{name} for the graphics ## object with handle @var{h}. ## ## @var{h} may also be a vector of graphics handles. If no second argument ## @var{name} is given then @code{getappdata} returns a structure, ## @var{appdata}, whose fields correspond to the appdata properties. ## ## @seealso{setappdata, isappdata, rmappdata, guidata, get, set, getpref, ## setpref} ## @end deftypefn function value = getappdata (h, name) if (nargin < 1) print_usage (); endif if (! all (ishghandle (h(:)))) error ("getappdata: H must be a scalar or vector of graphic handles"); endif if (nargin == 2) if (! ischar (name)) error ("getappdata: NAME must be a string"); endif value = cell (numel (h), 1); for i = 1:numel (h) try value{i} = (get (h(i), "__appdata__")).(name); end_try_catch endfor if (i == 1) value = value{1}; endif else # nargin == 1 if (numel (h) != 1) error ("getappdata: Only one handle H may be used when fetching appdata"); endif value = get (h, "__appdata__"); if (isempty (value)) value = struct (); endif endif endfunction %!test %! unwind_protect %! setappdata (0, "%data1%", ones (3), "%data2%", "hello world"); %! assert (getappdata (0, "%data1%"), ones (3)); %! assert (getappdata (0, "%data2%"), "hello world"); %! appdata = getappdata (0); %! name1 = "%data1%"; name2 = "%data2%"; %! assert (appdata.(name1), ones (3)); %! assert (appdata.(name2), "hello world"); %! unwind_protect_cleanup %! rmappdata (0, "%data1%", "%data2%"); %! end_unwind_protect ## Test input validation %!error <Invalid call> getappdata () %!error <H must be a scalar .* graphic handle> getappdata (-1, "hello") %!error <NAME must be a string> getappdata (0, 1) %!error <Only one handle H may be used when fetching appdata> getappdata ([0 0])