/*
 *  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.io.File;

import javax.swing.filechooser.FileFilter;

import com.rapidminer.gui.tools.dialogs.wizards.AbstractWizard;
import com.rapidminer.gui.tools.dialogs.wizards.AbstractWizard.WizardStepDirection;
import com.rapidminer.gui.tools.dialogs.wizards.dataimport.FileSelectionWizardStep;
import com.rapidminer.operator.nio.model.ExcelResultSetConfiguration;

/**
 * This step allows to select an file. With this file the {@link ExcelResultSetConfiguration} will be created.
 * 
 * @author Sebastian Land
 * 
 */
public class ExcelFileSelectionWizardStep extends FileSelectionWizardStep {

	private ExcelResultSetConfiguration configuration;
	
	/**
	 * There must be a configuration given, but might be empty.
	 */
	public ExcelFileSelectionWizardStep(AbstractWizard parent, ExcelResultSetConfiguration configuration) {
		super(parent, new FileFilter() {
			@Override
			public boolean accept(File f) {
				return f.isDirectory() || f.getName().endsWith("xls");
			}
			@Override
			public String getDescription() {
				return "Excel Files";
			}			
		});
		this.configuration = configuration;
	}

	@Override
	protected boolean performEnteringAction(WizardStepDirection direction) {
		if (configuration.getFile() != null) {
			this.fileChooser.setSelectedFile(configuration.getFile());
		}
		return true;
	}

	@Override
	protected boolean performLeavingAction(WizardStepDirection direction) {
		configuration.setWorkbookFile(getSelectedFile());
		return true;
	}
}