protected void fillPanelFields(boolean sourceField) {
		String selectedDir = openDirDialog();
		if (selectedDir != null) {
			if (sourceField) {
				setSourceDir(selectedDir);
				obfuscator.getFileFromSourceDir();
				List<File> fileList = obfuscator.getProjectFiles();
				projectPanel.repaintFileList(fileList);
			} else {
				setDestinationDir(selectedDir);
			}
		}
	}