/*******************************************************************************
 * Copyright (c) 2008, 2010 VMware Inc.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *   VMware Inc. - initial contribution
 *******************************************************************************/

package org.springframework.showcase.formtags.validation;


import org.springframework.showcase.formtags.domain.Country;

import org.springframework.util.StringUtils;

import org.springframework.validation.Errors;

import org.springframework.validation.Validator;


/**

 * Simple {@link Validator} implementation for {@link Country} instances.

 *


 */

public class CountryValidator implements Validator {


    public static final String DEFAULT_BAD_PLACEHOLDER_CODE = "-";


    private String badPlaceholderCode = DEFAULT_BAD_PLACEHOLDER_CODE;


    public void setBadPlaceholderCode(String badPlaceholderCode) {

        this.badPlaceholderCode = StringUtils.hasText(badPlaceholderCode)

                ? badPlaceholderCode : DEFAULT_BAD_PLACEHOLDER_CODE;

    }


    public boolean supports(Class candidate) {

        return Country.class.isAssignableFrom(candidate);

    }


    public void validate(Object object, Errors errors) {

        Country country = (Country) object;

        if (country.getCode() == this.badPlaceholderCode) {

            errors.rejectValue("bad.country.selected", "Please select a valid country");

        }

    }


}