% SPLIT splits a matrix object into the specified segments.
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% DESCRIPTION: SPLIT splits a matrix object into the specified segments.
%
% CALL:        out = split(in,pl);
%
% Note: this is just a wrapper of ao/split. Each AO in the matrix is passed
% to split with the input plist. 
% 
% INPUTS:      in      -  input matrix objects 
%              pl      -  parameter list
%
% OUTPUTS:     out     -  output matrix objects 
%
% <a href="matlab:utils.helper.displayMethodInfo('matrix', 'split')">Parameters Description</a>
%
% VERSION:     $Id: split.m,v 1.9 2011/08/23 13:51:02 hewitson Exp $
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

function varargout = split(varargin)
  
  % Check if this is a call for parameters
  if utils.helper.isinfocall(varargin{:})
    varargout{1} = getInfo(varargin{3});
    return
  end
  
  if nargout == 0
    error('### Matrix split method can not be used as a modifier.');
  end
    
  % Collect input variable names
  in_names = cell(size(varargin));
  for ii = 1:nargin
    in_names{ii} = inputname(ii);
  end
  
  % Collect all smodels and plists
  [ms, matrix_invars, rest] = utils.helper.collect_objects(varargin(:), 'matrix', in_names);
  [pl, pl_invars, rest]     = utils.helper.collect_objects(varargin(:), 'plist', in_names);
  
  % call the matrix wrapper
  varargout{1} = wrapper(ms, pl, getInfo('None'), in_names, 'split');  
  
end



%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%                               Local Functions                               %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% FUNCTION:    getInfo
%
% DESCRIPTION: Get Info Object
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

function ii = getInfo(varargin)
  
  if nargin == 1 && strcmpi(varargin{1}, 'None')
    sets = {};
    pls  = [];
  else
    ii = ao.getInfo('split');
    sets = ii.sets;
    pls = [];
    for kk=1:numel(sets)
      pls = [pls getDefaultPlist(sets{kk})];
    end
  end
  % Build info object
  ii = minfo(mfilename, 'matrix', 'ltpda', utils.const.categories.aop, '$Id: split.m,v 1.9 2011/08/23 13:51:02 hewitson Exp $', sets, pls);
  ii.setArgsmin(2);
  ii.setModifier(false);
end

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%
% FUNCTION:    getDefaultPlist
%
% DESCRIPTION: Get Default Plist
%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

%--------------------------------------------------------------------------
% Get Default Plist
%--------------------------------------------------------------------------
function plout = getDefaultPlist(set)
  persistent pl;
  persistent lastset;
  if exist('pl', 'var')==0 || isempty(pl) || ~strcmp(lastset, set)
    pl = buildplist(set);
    lastset = set;
  end
  plout = pl;
end

function pl = buildplist(set)
  
  ii = ao.getInfo('split', set);
  pl = ii.plists(1);

end