/*
 *  RapidMiner
 *
 *  Copyright (C) 2001-2008 by Rapid-I and the contributors
 *
 *  Complete list of developers available at our web site:
 *
 *       http://rapid-i.com
 *
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU Affero General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  This program 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 Affero General Public License for more details.
 *
 *  You should have received a copy of the GNU Affero General Public License
 *  along with this program.  If not, see http://www.gnu.org/licenses/.
 */
package com.rapidminer.gui.properties;

import java.awt.Component;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.AbstractCellEditor;
import javax.swing.JButton;
import javax.swing.JTable;

import com.rapidminer.operator.Operator;
import com.rapidminer.parameter.ParameterTypeMatrix;
import com.rapidminer.tools.math.StringToMatrixConverter;


/**
 * A cell editor with a button that opens a {@link MatrixPropertyDialog}. Values
 * generated by this operator are matrices of String pairs.
 * 
 * @see com.rapidminer.gui.properties.MatrixPropertyDialog
 * @author Helge Homburg
 * @version $Id: MatrixValueCellEditor.java,v 1.6 2008/07/13 11:00:56 ingomierswa Exp $
 */
public class MatrixValueCellEditor extends AbstractCellEditor implements PropertyValueCellEditor {

	private static final long serialVersionUID = 0L;

    private ParameterTypeMatrix type;
    
	private JButton button = new JButton("Edit Matrix...");

	private double[][] matrix;
		
	public MatrixValueCellEditor(ParameterTypeMatrix type) {
        this.type = type;
		button.setMargin(new java.awt.Insets(0, 0, 0, 0));
		button.setToolTipText(type.getDescription());
		setButtonText();
	}

    public void setOperator(final Operator operator) {
        button.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                MatrixPropertyDialog dialog = new MatrixPropertyDialog(type, matrix, operator);
                dialog.setVisible(true);
                if (dialog.isOk()) {
                    matrix = dialog.getMatrix();
                	fireEditingStopped();
                    setButtonText();
                } else {
                    fireEditingCanceled();
                }
            }
        });
    }
    
	public Object getCellEditorValue() {
		return StringToMatrixConverter.createMatlabString(matrix);
	}

	public Component getTableCellEditorComponent(JTable table, Object value, boolean isSelected, int row, int col) {
		try {
			this.matrix = StringToMatrixConverter.parseMatlabString((String)value);
		} catch (Exception e) {
			// TODO: do nothing?
		}
		setButtonText();
		return button;
	}

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

	public boolean useEditorAsRenderer() {
		return true;
	}

	private void setButtonText() {		
		if (matrix != null) {
		button.setText("Edit Matrix ("+matrix.length+" x "+matrix[0].length+")...");
		} else {
			button.setText("Edit Matrix...");
		}		
	}
}