/*
 * Copyright (c) 2008, SQL Power Group Inc.
 *
 * This file is part of SQL Power Library.
 *
 * SQL Power Library is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * SQL Power Library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>. 
 */
package ca.sqlpower.swingui.table;

import java.awt.Component;
import java.text.DecimalFormat;
import java.text.FieldPosition;
import java.text.Format;
import java.text.ParsePosition;

import javax.swing.JTable;
import javax.swing.table.DefaultTableCellRenderer;

public class DecimalTableCellRenderer extends DefaultTableCellRenderer  implements FormatFactory {

    DecimalFormat aldf;

    public DecimalTableCellRenderer() {
        aldf = new DecimalFormat("#,##0.0");
        aldf.setMaximumFractionDigits(1);
        aldf.setMinimumFractionDigits(0);
    }

    public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus,
            int row, int column) {

        String formattedValue;

        if (value == null) {
            formattedValue = "null";
        } else if (value instanceof Number) {
            formattedValue = aldf.format(value);
        } else {
            formattedValue = value.toString();
        }
         return super.getTableCellRendererComponent(table, formattedValue, isSelected, hasFocus, row, column);
    }

    public Format fakeFormatter = new Format() {

        @Override
        public StringBuffer format(Object value, StringBuffer toAppendTo, FieldPosition pos) {
            if (value instanceof Number) {
                return toAppendTo.append(aldf.format(value));
            } else {
                return toAppendTo.append(value.toString());
            }
        }

        @Override
        public Object parseObject(String source, ParsePosition pos) {
            throw new UnsupportedOperationException("This formatter cannot parse");
        }
        
    };
    
    public Format getFormat() {
        return fakeFormatter;
    }
}