/*
 This file is part of the software framework JStatCom, 
 a library for building applications for data based analysis.

 Copyright (C) 2000-2005  Markus Kraetzig

 This library is free software; you can redistribute it and/or modify
 it under the terms of the GNU Lesser General Public License as
 published by the Free Software Foundation; either version 2.1 of the
 License, or (at your option) any later version.

 This 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
 Lesser General Public License for more details.

 You should have received a copy of the GNU Lesser General Public
 License along with this library; if not, write to the Free Software
 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 USA
 */

package com.jstatcom.table;

import com.jstatcom.model.JSCTypes;
import com.jstatcom.model.Symbol;

/**
 * Implementation of JSCAbstractTableModel for
 * JSCNArray data objects. It takes the transposed
 * property into account.
 * 
 * @author Markus Kraetzig 
 */
public class JSCNArrayTableModel extends JSCAbstractTableModel {
    /**
     * Constructs a table model for a symbol of type
     * JSCTypes.NARRAY. The argument can be null.
     * 
     * @param symbol
     *            must be of type JSCTypes.NARRAY, can be
     *            null
     * @throws IllegalArgumentException
     *             if (symbol.type != JSCTypes.NARRAY)
     */
    public JSCNArrayTableModel(Symbol symbol) {
        super(symbol);
        if (symbol != null)
            if (symbol.type != JSCTypes.NARRAY)
                throw new IllegalArgumentException("Symbol type " + symbol.type
                        + " different from table type " + JSCTypes.NARRAY + ".");
    }

    /*
     * @see javax.swing.table.TableModel#getColumnCount()
     */
    public int getColumnCount() {
        if (getCurrentSymbol() == null || getCurrentSymbol().isEmpty())
            return 0;

        return getCurrentSymbol().getJSCNArray().cols();

    }

    /*
     * @see javax.swing.table.TableModel#getRowCount()
     */
    public int getRowCount() {
        if (getCurrentSymbol() == null || getCurrentSymbol().isEmpty())
            return 0;

        return getCurrentSymbol().getJSCNArray().rows();

    }

    /*
     * @see javax.swing.table.TableModel#getValueAt(int, int)
     */
    public Object getValueAt(int rowIndex, int columnIndex) {
        if (getCurrentSymbol() == null || getCurrentSymbol().isEmpty())
            return null;
        return new Double(getCurrentSymbol().getJSCNArray().doubleAt(rowIndex,
                columnIndex));
    }

    /**
     * The data model is editable. This method sets a value in the underlying
     * data.
     * 
     * @param aValue
     *            must be a Double
     * @param rowIndex
     *            the row index, will be treated with taking
     *            transposed into account
     * @param columnIndex
     *            the column index, will be treated with taking
     *            transposed into account
     * @throws IllegalArgumentException
     *             if (!aValue instanceof Double)
     */
    public void setValueAt(Object aValue, int rowIndex, int columnIndex) {
        if (!(aValue instanceof Double))
            throw new IllegalArgumentException("Value at [" + rowIndex + ":"
                    + columnIndex + "] is not a Double.");
        if (getCurrentSymbol() == null || getCurrentSymbol().isEmpty())
            throw new IllegalStateException("Symbol is empty or null.");

        getCurrentSymbol().getJSCNArray().setValAt(
                ((Double) aValue).doubleValue(), rowIndex, columnIndex);

    }

    /**
     * Returns the Double.class regardless of
     * columnIndex.
     * 
     * @param columnIndex
     *            ignored
     * @return Double.class
     */
    public Class getColumnClass(int columnIndex) {
        return Double.class;
    }

}