package pt.utl.ist.fenix.tools.excel.styles;

import java.util.ArrayList;
import java.util.List;

import org.apache.poi.hssf.usermodel.HSSFCellStyle;
import org.apache.poi.hssf.usermodel.HSSFFont;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;

public class ComposedCellStyle extends CellStyle {
    private final List<CellStyle> parts = new ArrayList<CellStyle>();

    @Override
    public HSSFCellStyle getStyle(HSSFWorkbook book) {
	HSSFCellStyle style = book.createCellStyle();
	HSSFFont font = book.createFont();
	for (CellStyle part : parts) {
	    part.appendToStyle(book, style, font);
	}
	style.setFont(font);
	return style;
    }

    @Override
    protected void appendToStyle(HSSFWorkbook book, HSSFCellStyle style, HSSFFont font) {
	// Nothing to do.
    }

    public CellStyle merge(CellStyle style) {
	parts.add(style);
	return this;
    }
}