function pj = validate( pj )

%VALIDATE Method to check state of PrintJob object.

%   Values of PrintJob object class variables are checked for consistency.

%   Errors out if it finds bad combinations. Fills in missing data with

%   defaults.

%

%   Ex:

%      pj = VALIDATE( pj );

%

%   See also PRINT, PRINTOPT, INPUTCHECK.

%   Copyright 1984-2016 The MathWorks, Inc.

pj.Validated = 1; 

%If no window requested, and none to act as default, error out.

pj = validateHandleToPrint(pj);  

if ~pj.UseOriginalHGPrinting 

   % for future use

   if pj.RGBImage  

       if ~isempty(pj.Driver)

           error(message('MATLAB:print:IncompatibleRGBImageOptionNoDriver', pj.Driver));

       end

       if ~isempty(pj.FileName)

           error(message('MATLAB:print:IncompatibleRGBImageOptionFilename'));

       end

       if ~isempty(pj.PrinterName)

           error(message('MATLAB:print:IncompatibleRGBImageOptionPrinter'));

       end

   end

   if pj.ClipboardOption  

       if ~isempty(pj.FileName)

           error(message('MATLAB:print:IncompatibleClipboardOptionFilename'));

       end

       if ~isempty(pj.PrinterName)

           error(message('MATLAB:print:IncompatibleClipboardOptionPrinter'));

       end

       if isempty(pj.Driver) 

           error(message('MATLAB:print:IncompatibleClipboardOptionNoDriver'));

       end

       if ~pj.DriverClipboard %driver doesn't support clipboard

           error(message('MATLAB:print:IncompatibleClipboardOptionDriver', pj.Driver));

       end

   end

end 

if pj.PostScriptPreview && ~strcmp(pj.DriverClass,'EP') 

    error(message('MATLAB:print:ValidateTiffPreviewOnlyWithEPS'))

end

%If no device given, use default from PRINTOPT

if ~pj.RGBImage && isempty( pj.Driver ) 

    %Use method to validate default and set related class variables

    wasError = 0;

    try

        pj = inputcheck( pj, pj.DefaultDevice );

        pj.DriverColorSet = 0;

    catch ex  %#ok<NASGU>

        wasError = 1;

    end

    if wasError || isempty( pj.Driver )

      error(message('MATLAB:print:ValidateUnknownDeviceType', pj.DefaultDevice));

    end

end

if strcmp(pj.DriverClass, 'MW' )  

    if isunix

      error(message('MATLAB:print:ValidateUseWindowsDriver', pj.Driver));

    end

    % If user specifies a filename while device is -dwin

    % or -dwinc, either because the user gave that device or, more

    % likely, it's the default, and since the filename is useless

    % with Windows driver anyway, we'll assume the user really wants

    % a PostScript file. This is because 'print foo' is easier

    % to type then 'print -dps foo' and probably more commonly

    % meant if a filename is given. Unless of course the user asked

    % for the Print Dialog with the -v flag, then s/he really meant it.

    if (~isempty(pj.FileName) && ~pj.Verbose ) ...

            && ( strcmp(pj.Driver, 'win') || strcmp(pj.Driver, 'winc') )

        if pj.DriverColor

            pj.Driver = 'psc';

        else

            pj.Driver = 'ps';

        end

        pj.DriverExt = 'ps';

        pj.DriverClass = 'PS';

    end

end

%TIFF previews imply -loose, historically because ZBuffer TIFF was always "loose".

if pj.PostScriptPreview == pj.TiffPreview 

    pj.PostScriptTightBBox = 0;    

end

h = pj.Handles{1}(1); 

% Validate use of fillpage/bestfit options

%    can't do -fillpage and -bestfit at same time

%    must be with a page format (PS, PDF, or Printer)

%    must be with a figure (not SL or SF) 

isfig = isfigure(h);  

isPage = locIsPageFormatOrPrinter(pj); 

isAuto = strcmp(get(h, 'PaperPositionMode'), 'auto');  

if pj.FillPage || pj.BestFit 

  if pj.FillPage

      option = 'fillpage';

  else

      option = 'bestfit';

  end

  % must be with figure (not SL/SF) 

  % can't do -fillpage and -bestfit at same time

  % must be with a page format (PS, PDF, or Printer)

  if ~isfig

      error(message('MATLAB:print:OptionOnlyValidForFigures', option));

  end

  if pj.FillPage && pj.BestFit 

      error(message('MATLAB:print:FillPageBestFitExclusive'));

  end

  if ~isPage

      error(message('MATLAB:print:OptionOnlyValidForPageFormats', option));

  end

end

if isfig 

  % if printing to page format in 'auto' mode (and user hasn't specified either 

  % -bestfit or -fillpage), warn the user and offer suggestions if the output will get 

  % cropped (because figure is too large to fit on the page)

  if isPage && isAuto && ~(pj.FillPage || pj.BestFit) 

     paperPos = get(h, 'PaperPosition'); 

     if any(paperPos(1:2) < 0)

        warning(message('MATLAB:print:FigureTooLargeForPage'));

     end

  end

  %Fill renderer and -noui from the printtemplate (if it exists) if

  %the user didn't specify these options on the command line

  pt = getprinttemplate(h); 

  if ~isempty(pt) 

	if ~pj.nouiOption

	  pj.PrintUI = pt.PrintUI;

	end

	if ~pj.rendererOption && ~strcmp( pt.Renderer, 'auto' )

	  pj.Renderer = pt.Renderer;

      pj.rendererOption = 1; % overriding figure renderer

	end

  end 

  if ~pj.UseOriginalHGPrinting && (isfield(pj.temp, 'isFigureShowEnabled') && ... 

          ~pj.temp.isFigureShowEnabled) 

      %If user did not specify -noui and there are visible uicontrols, error now

      if ~pj.nouiOption && ~isempty(validateFindControls(h))

           error(message('MATLAB:prepareui:UnsupportedPlatform'));

      end

  end

end