Documentation of clo

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Function Synopsis

ret_obj = clo(obj, in1, in2)

Help text

CLO Clear object
   CLO(H) deletes all children of the object with visible handles.

   CLO(..., 'reset') deletes all children (including ones with hidden
   handles) and also resets all object properties to their default
   values.

   CLO(..., HSAVE) deletes all children except those specified in
   HSAVE.

   See also CLF, CLA, RESET, HOLD.

Cross-Reference Information

Listing of function clo

function ret_obj = clo(obj, in1, in2)

%   Copyright 1984-2000 The MathWorks, Inc. 
%   $Revision: 1.3 $  $Date: 2000/06/01 02:54:03 $

% decode input args:
hsave    = [];
do_reset = '';

error(nargchk(1, 3, nargin));

if nargin > 1
  if   isstr(in1), do_reset = in1; else, hsave = in1; end
  if nargin > 2
    if isstr(in2), do_reset = in2; else, hsave = in2; end
  end
end

% error-check input args
if ~isempty(do_reset)
  if ~strcmp(do_reset, 'reset')
    error('Unknown command option.')
  else
    do_reset = 1;
  end
else
  do_reset = 0;
end

if any(~ishandle(hsave))
  error('Bad handle')
end

hsave = find_kids(obj, hsave);

kids_to_delete = [];
if do_reset
  kids_to_delete = findobj(allchild(obj),'flat','serializable','on');
else
  kids_to_delete =  findobj(get(obj,'Children'),'flat',...
      'HandleVisibility','on', 'serializable','on');
end

kids_to_delete = setdiff(kids_to_delete, hsave);

delete(kids_to_delete);

if do_reset, reset(obj(ishandle(obj))), end

% now that IntegerHandle can be changed by reset, make sure
% we're returning the new handle:
if (nargout ~= 0)
    ret_obj = obj(ishandle(obj));
end

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
function hsave_out = find_kids(obj, hsave)
%
%
%
hsave_out = [];
for kid=hsave(:)'
  while ~isempty(kid)
    parent = get(kid,'parent');
    if ~isempty(parent) & parent == obj
      hsave_out(end + 1) = kid;
      break;
    else
      kid = parent;
    end
  end
end