/**
* Copyright 2013 European Parliament
*
* Licensed under the EUPL, Version 1.1 or - as soon they will be approved by the European Commission - subsequent versions of the EUPL (the "Licence");
* You may not use this work except in compliance with the Licence.
* You may obtain a copy of the Licence at:
*
* http://joinup.ec.europa.eu/software/page/eupl
*
* Unless required by applicable law or agreed to in writing, software distributed under the Licence is distributed on an "AS IS" basis,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the Licence for the specific language governing permissions and limitations under the Licence.
*/
package org.nsesa.editor.gwt.an.amendments.client;
import org.nsesa.editor.gwt.core.client.ui.overlay.DefaultTransformer;
import org.nsesa.editor.gwt.core.client.ui.overlay.Transformer;
import org.nsesa.editor.gwt.core.client.ui.overlay.document.OverlayWidget;
import org.nsesa.editor.gwt.core.client.validation.OverlayWidgetValidator;
import org.nsesa.editor.gwt.core.client.validation.ValidationResult;
import org.nsesa.editor.gwt.core.client.validation.Validator;
import org.nsesa.editor.gwt.core.client.validation.WellformedValidator;
import java.util.ArrayList;
import java.util.List;
/**
* A simple "composite" validator to allow registration of several validators.
*
* @author <a href="stelian.groza@gmail.com">Stelian Groza</a>
* Date: 21/03/13 12:31
*/
public class AmendmentOverlayWidgetValidator implements Validator<OverlayWidget> {
private List<Validator<OverlayWidget>> validators;
public AmendmentOverlayWidgetValidator() {
this.validators = new ArrayList<Validator<OverlayWidget>>();
addValidator(new OverlayWidgetValidator());
addValidator(new Validator<OverlayWidget>() {
private WellformedValidator wrapped = new WellformedValidator();
private Transformer transformer = new DefaultTransformer();
@Override
public ValidationResult validate(OverlayWidget toValidate) {
return wrapped.validate(transformer.transform(toValidate));
}
});
}
/**
* Validate {@link OverlayWidget} against each validator presented in the <code>validators</code> list.
* It is a short circuit evaluation meaning the algorithm stop when validation fails on one of the validators.
*
* @param toValidate the instance to validate
* @return The last validation result
*/
@Override
public ValidationResult validate(OverlayWidget toValidate) {
ValidationResult validationResult = null;
for (Validator<OverlayWidget> validator : validators) {
validationResult = validator.validate(toValidate);
if (!validationResult.isSuccessful()) {
break;
}
}
return validationResult;
}
private void addValidator(Validator<OverlayWidget> validator) {
this.validators.add(validator);
}
}