/*
 *  RapidMiner
 *
 *  Copyright (C) 2001-2011 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.operator.nio;

import java.util.Map;

import javax.swing.event.TableModelEvent;
import javax.swing.event.TableModelListener;
import javax.swing.table.AbstractTableModel;
import javax.swing.table.TableModel;

/**
 * Wraps around another table model and adds another column at position 0 for editing
 * annotations. The table should use an {@link AnnotationCellEditor} as an editor in
 * column 0.
 * 
 * @author Simon Fischer
 * 
 */
public class AnnotationTableModel extends AbstractTableModel {

	private static final long serialVersionUID = 1L;

	private TableModel wrappedModel;
	private Map<Integer, String> annotationsMap;

	public AnnotationTableModel(TableModel wrappedModel, Map<Integer,String> annotationsMap) {
		this.annotationsMap = annotationsMap;
		this.wrappedModel = wrappedModel;
		wrappedModel.addTableModelListener(new TableModelListener() {
			@Override
			public void tableChanged(TableModelEvent e) {
				TableModelEvent translated;
				translated = new TableModelEvent(AnnotationTableModel.this, e.getFirstRow(), e.getLastRow(), e.getColumn()+1, e.getType());
				fireTableChanged(translated);				
			}
		});
	}
	
	@Override
	public String getColumnName(int column) {
		if (column == 0) {
			return "Annotation";
		} else {
			return wrappedModel.getColumnName(column - 1);
		}
	}
	
	@Override
	public int getRowCount() {
		return wrappedModel.getRowCount();
	}

	@Override
	public int getColumnCount() {
		return wrappedModel.getColumnCount() + 1;
	}

	@Override
	public void setValueAt(Object aValue, int rowIndex, int columnIndex) {
		if (columnIndex == 0) {
			if (AnnotationCellEditor.NONE.equals(aValue)) {
				annotationsMap.remove(rowIndex);
			} else {
				annotationsMap.put(rowIndex, (String) aValue);
			}
		} else {
			wrappedModel.setValueAt(aValue, rowIndex, columnIndex-1);
		}
	}

	@Override
	public Object getValueAt(int rowIndex, int columnIndex) {
		if (columnIndex == 0) {
			String annotation = annotationsMap.get(rowIndex);
			if (annotation == null) {
				annotation = AnnotationCellEditor.NONE;
			}
			return annotation;
		} else {
			return wrappedModel.getValueAt(rowIndex, columnIndex - 1);
		}
	}
	
	@Override
	public boolean isCellEditable(int rowIndex, int columnIndex) {
		return columnIndex == 0;
	}
}