## Copyright (C) 2010 Martin Hepperle
##
## 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 2 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/>.

## -*- texinfo -*-
## @deftypefn {Function file} {@var{P} =} msgbox (@var{MESSAGE} [,@var{TITLE} [,@var{ICON}]])
##
## Displays the @var{MESSAGE} using a message dialog. 
##
## @var{message} can have multiple lines separated by newline characters
## ("\n"), or it can be a cellstr array (one element for each line).
## The optional @var{TITLE} (character string) can be used to decorate the
## dialog caption.
## The @var{ICON} can be used optionally to select a dialog icon. 
## It can be one of @code{'error'}, @code{'help'} or @code{'warn'}.
## The return value is always 1.
##
## @end deftypefn
## @seealso{helpdlg, questdlg, warndlg}

function ret = msgbox (message, varargin)

  if (! ischar (message))
    if (iscell (message))
      message = cell2mlstr (message);
    else
      error ("msgbox: character string or cellstr array expected for message");
    endif
  endif
  
  switch length (varargin)
    case 0
      title = "";
      dlg = 'emptydlg';
    case 1
      title = varargin{1};
      dlg = 'emptydlg';
    otherwise
      % two or more arguments
      title = varargin{1};
      icon =  varargin{2};
      if strcmp (icon,'error') == 1
        dlg = 'errordlg';
      elseif strcmp (icon,'help') == 1
        dlg = 'helpdlg';
      elseif strcmp (icon,'warn') == 1
        dlg = 'warndlg';
      else
        dlg = 'emptydlg';
      end
  endswitch

  if (! ischar (title))
    error ("msgbox: character string expected for title");
  endif

  ret = java_invoke ('org.octave.JDialogBox', dlg, message, title );

endfunction