private void initFileList() {
		fileList = new HashSet<FileModel>();
		File folder = new File(dir);
		File[] listOfFiles = folder.listFiles(); 
		for (int i = 0; i < listOfFiles.length; i++) 
		{
			if (listOfFiles[i].isFile()) 
			{
				fileList.add(new FileModel(listOfFiles[i].getName(),0));
			}
		}
	}