% Usage:
% 
% >> erplab(option)
% 
% option:
% 
% help       : open
% manual     : open a html ERPLAB manual
% redraw     : update ERPset(s) on the GUI
% amnesia    : wipe out the ERPLAB's memory
%
% Author: Javier Lopez-Calderon & Steven Luck
% Center for Mind and Brain
% University of California, Davis,
% Davis, CA
% 2009

%b8d3721ed219e65100184c6b95db209bb8d3721ed219e65100184c6b95db209b
%
% ERPLAB Toolbox
% Copyright © 2007 The Regents of the University of California
% Created by Javier Lopez-Calderon and Steven Luck
% Center for Mind and Brain, University of California, Davis,
% javlopez@ucdavis.edu, sjluck@ucdavis.edu
%
% This program 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.
%
% This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.

function erplab(dosomething)

% I know, it is not the most elegant function I've written so far...
if nargin<1
        help erplab
        return
end
if strcmpi(dosomething, 'help') || strcmpi(dosomething, 'manual')
      pop_erphelp;
      return
end
if strcmpi(dosomething, 'redraw')
      option = 0;
      try
            ALLERP   = evalin('base', 'ALLERP');
      catch
            ALLERP = [];
      end
      try
            ERP   = evalin('base', 'ERP');
      catch
            ERP =[];
      end
      if isempty(ALLERP) &&  isempty(ERP)
            return
      elseif isempty(ALLERP) &&  ~isempty(ERP)
            ALLERP = ERP;
            CURRENTERP =1;
            assignin('base','CURRENTERP', CURRENTERP);  % save to workspace
            assignin('base','ALLERP', ALLERP);  % save to workspace
      else
            try
                  CURRENTERP   = evalin('base', 'CURRENTERP');
                  if CURRENTERP<=0 || isempty(CURRENTERP)
                        CURRENTERP=1;
                  end
            catch
                  CURRENTERP  = 1;
            end
            nerp = length(ALLERP);
            if CURRENTERP<=nerp
                  option = 1;
            end
            ALLERP(CURRENTERP) = ERP;
            assignin('base','ALLERP', ALLERP);  % save to workspace
            assignin('base','CURRENTERP', CURRENTERP);  % save to workspace
      end
      eeglab redraw
      pause(0.1)
      updatemenuerp(ALLERP, option);
elseif strcmpi(dosomething, 'amnesia')
        erplabamnesia
end
