/**
 *                                                                            
 *  Copyright (c) 2011, 2016 - Loetz GmbH&Co.KG (69115 Heidelberg, Germany) 
 *                                                                            
 *  All rights reserved. This program and the accompanying materials           
 *  are made available under the terms of the Eclipse Public License 2.0        
 *  which accompanies this distribution, and is available at                  
 *  https://www.eclipse.org/legal/epl-2.0/                                 
 *                                 
 *  SPDX-License-Identifier: EPL-2.0                                 
 *                                                                            
 *  Contributors:                                                      
 * 	   Christophe Loetz (Loetz GmbH&Co.KG) - initial implementation
 * 
 */
 package org.eclipse.osbp.utils.vaadin;

import java.text.DateFormat;
import java.util.Locale;

import org.apache.commons.lang.StringEscapeUtils;

import com.vaadin.data.util.converter.StringToDateConverter;

public class StringToFormattedDateConverter extends StringToDateConverter {
	private static final long serialVersionUID = 721600785465571493L;
	private PropertyLookup lookup = null;
	
	public void setLookup(PropertyLookup lookup) {
		this.lookup = lookup;
	}

    protected DateFormat getDefaultFormat(Locale locale) {
        if (locale == null) {
            locale = Locale.getDefault();
        }

        DateFormat f = DateFormat.getDateInstance(DateFormat.MEDIUM, locale);
        f.setLenient(false);
        return f;
    }

    @Override
	protected DateFormat getFormat(Locale locale) {
        if (locale == null) {
        	if (lookup == null) {
        		locale = Locale.getDefault();
        		return getDefaultFormat(locale);
        	} else {
        		locale = lookup.getLocale();
        	}
        }
        
        if (lookup == null || lookup.getFormat() == null) {
    		return getDefaultFormat(locale);
        }

        return SimpleDateFormatter.getFormat(StringEscapeUtils.unescapeHtml(lookup.getFormat()), locale);
	}
}