## file_dialog

## Author: martinh <address@hidden>
## Created: 2009-02-04

function [ ret ] = file_dialog (parent, dlg_type="open", multi=0, ext)
  chooser = java_new("javax.swing.JFileChooser");
  if (nargin == 4 && length(ext) > 0)
  	for i=1:length(ext)
    		ef = java_new("ExtensionFileFilter", ext{i}{2}, ext{i}{1});
    		if (i==1)
    			ef1 = ef;
    		endif
    		chooser.addChoosableFileFilter(ef);
    	endfor
    	chooser.setFileFilter(ef1);
  endif
  chooser.setMultiSelectionEnabled(multi);
  switch dlg_type
  	case {"open", "o"}
    		val = chooser.showOpenDialog(parent);
   	case {"save", "s"}
    		val = chooser.showSaveDialog(parent);
    	otherwise
      		error("Unsupportet file dialog type '%s'", dlg_type);
  endswitch
  if (val == chooser.APPROVE_OPTION)
    if (multi)
      files = chooser.getSelectedFiles();
      for i = 1:length(files)
        ret{i} = files(i).getAbsolutePath();
      endfor
     else 
      ret = {chooser.getSelectedFile().getAbsolutePath()};
    endif
  else
    ret = [];
  endif
endfunction