/*
 *  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.ports.quickfix;

import java.util.Arrays;
import java.util.Collection;

import com.rapidminer.gui.tools.SwingTools;
import com.rapidminer.tools.math.similarity.nominal.LevenshteinDistance;
/**
 * @author Sebastian Land
 */
public abstract class DictionaryQuickFix extends AbstractQuickFix {

	private String description;
	private String[] options;
	private int nearestOption;

	public DictionaryQuickFix(String fixWhat, Collection<String> alternativeValues, final String currentValue, String description) {
		super(1, true, "replace_by_dictionary", fixWhat);
		this.options = alternativeValues.toArray(new String[alternativeValues.size()]);
		this.description = description;

		// searching options for nearest on Hamming Distance
		Arrays.sort(options);
		int distance = Integer.MAX_VALUE;
		int i = 0;
		for (String string: options) {
			int currentDistance = LevenshteinDistance.getDistance(string, currentValue, 2);
			if (currentDistance < distance) {
				nearestOption = i;
				distance = currentDistance;
			}
			i++;
		}
	}

	public DictionaryQuickFix(String arg, Collection<String> alternativeValues, final String currentValue) {
		this(arg, alternativeValues, currentValue, "Select the appropriate value");
	}

	public void apply() {
		Object option = SwingTools.showInputDialog("quickfix.replace_by_dictionary", options, options[nearestOption], description);
		if (option != null) {
			insertChosenOption(option.toString());
		}
	}
	
	/**
	 * This method must be overridden from subclasses to use the chosen option
	 */
	public abstract void insertChosenOption(String chosenOption);
}