/*
 * @(#)Table.java Created on Nov 29, 2004
 *
 */
package net.sourceforge.fenixedu.commons.collections;

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

/**
 * @author Carla Penedo <carla.penedo@ist.utl.pt>
 * 
 */
public class Table {

    private ArrayList columns;

    private int numberRows = 0;

    public Table(int columnNr) {
	super();
	columns = new ArrayList(columnNr);
	for (int i = 0; i < columnNr; i++) {
	    columns.add(i, new ArrayList());
	}
    }

    public void put(int rowIndex, int columnIndex, Object object) {
	ArrayList column = (ArrayList) columns.get(columnIndex);
	fill(column, rowIndex - 1);
	column.add(rowIndex, object);
	if (column.size() > numberRows) {
	    numberRows = column.size();
	}
    }

    public void appendToColumn(int columnIndex, Object object) {
	ArrayList column = (ArrayList) columns.get(columnIndex);
	put(column.size(), columnIndex, object);
    }

    public Object get(int rowIndex, int columnIndex) {
	ArrayList column = (ArrayList) columns.get(columnIndex);
	if (rowIndex < column.size()) {
	    return column.get(rowIndex);
	}
	return "";
    }

    public List getRow(int rowIndex) {
	List row = new ArrayList(columns.size());

	for (int columnIndex = 0; columnIndex < columns.size(); columnIndex++) {
	    row.add(columnIndex, get(rowIndex, columnIndex));
	}

	return row;
    }

    /**
     * @return Returns the numberColumns.
     */
    public int getNumberColumns() {
	return columns.size();
    }

    /**
     * @return Returns the numberRows.
     */
    public int getNumberRows() {
	return numberRows;
    }

    /**
     * @param list
     * @param rowIndex
     */
    private void fill(ArrayList list, int rowIndex) {
	while (list.size() <= rowIndex) {
	    list.add(null);
	}
    }
}