/*
 *  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.util.LinkedList;
import java.util.List;

import javax.swing.table.AbstractTableModel;

import com.rapidminer.operator.Operator;
import com.rapidminer.parameter.ParameterType;
import com.rapidminer.parameter.Parameters;
import com.rapidminer.parameter.UndefinedParameterError;

/**
 * This is a basic property table which can be simply build from a 
 * {@link Parameters} object. This property table does not rely on
 * an operator.
 * 
 * @author Ingo Mierswa
 * @version $Id: BasicPropertyTable.java,v 1.5 2008/07/13 16:39:42 ingomierswa Exp $
 */
public class BasicPropertyTable extends PropertyTable {

	private static final long serialVersionUID = -2054750632363559123L;
	
	private ParameterType[] shownParameterTypes = new ParameterType[0];
	
	private Parameters parameters = new Parameters();
	
	private class BasicPropertyModel extends AbstractTableModel {

		private static final long serialVersionUID = -6246875779676802335L;

		public int getColumnCount() {
			return 2;
		}

		public int getRowCount() {
			return shownParameterTypes.length;
		}

		public String getColumnName(int index) {
			if (index == 0) {
				return "Key";
			} else {
				return "Value";
			}
		}
		
		public Object getValueAt(int rowIndex, int columnIndex) {
			String key = getParameterType(rowIndex).getKey();
			if (columnIndex == 0) {
				return key;
			} else {
				try {
					return parameters.getParameter(key);
				} catch (UndefinedParameterError e) {
					return null;
				}
			}
		}
		
		public void setValueAt(Object value, int row, int column) {
			if (column == 1) {
				String key = getParameterType(row).getKey();
				parameters.setParameterWithoutCheck(key, value);
				updateParameterTypes();
			}
		}
	}
	
	public BasicPropertyTable() {
		setModel(new BasicPropertyModel());
	}
	
	public void setParameters(Parameters parameters) {	
		this.parameters = parameters;
		updateParameterTypes();
	}
	
	private void updateParameterTypes() {
		List<ParameterType> viewableList = new LinkedList<ParameterType>();
		for (String key : this.parameters) {
			ParameterType type = this.parameters.getParameterType(key);
			if (!type.isHidden()) {
				viewableList.add(type);
			}
		}
		
		this.shownParameterTypes = new ParameterType[viewableList.size()];
		viewableList.toArray(this.shownParameterTypes);

		setModel(new BasicPropertyModel());
		
		updateEditorsAndRenderers(this);
	}
	
	public void setValue(String key, Object value) {
		this.parameters.setParameterWithoutCheck(key, value);
		updateParameterTypes();
	}
	
	public boolean isCellEditable(int row, int column) {
		if (column == 0)
			return false;
		else
			return true;
	}
	
	/** Returns null. */
	public Operator getOperator(int row) {
		return null;
	}

	public ParameterType getParameterType(int row) {
		return this.shownParameterTypes[row];
	}
	
	public void clearParameterTypes() {
		this.parameters = new Parameters();
		updateParameterTypes();
	}
	
	public void setValue(int row, Object value) {
		getModel().setValueAt(value, row, 1);
	}
}