/*******************************************************************************
* Copyright (c) 2012 Red Hat, Inc.
* Distributed under license by Red Hat, Inc. All rights reserved.
* This program is 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:
* Red Hat, Inc. - initial API and implementation
******************************************************************************/
package org.jboss.tools.openshift.internal.common.ui.databinding;
import org.eclipse.core.databinding.validation.IValidator;
import org.eclipse.core.databinding.validation.ValidationStatus;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.osgi.util.NLS;
import org.jboss.tools.openshift.common.core.utils.StringUtils;
/**
* A validator that handles empty strings as invalid. Non-empty strings are
* valid.
* <p>
* Invalid states are reported via ValidationStatus.cancel("message") so that
* {@link RequiredControlDecorationUpdater} may decorate in custom way.
*
* @author Andre Dietisheim
*
* @see RequiredControlDecorationUpdater
*/
public class RequiredStringValidator implements IValidator {
private String fieldName;
public RequiredStringValidator(String fieldName) {
this.fieldName = fieldName;
}
@Override
public IStatus validate(Object value) {
String string = (String) value;
if (StringUtils.isEmpty(string)) {
return ValidationStatus.cancel(NLS.bind("Please provide a {0}", fieldName));
}
return validateString((String) value);
}
public IStatus validateString(String value) {
return ValidationStatus.ok();
}
protected String getFieldName() {
return fieldName;
}
}