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1 /*
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2 * Copyright cast(C) 2005, 2006 db4objects Inc. (http://www.db4o.com) and others.
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3 *
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4 * All rights reserved. This program and the accompanying materials
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5 * are made available under the terms of the Eclipse Public License v1.0
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6 * which accompanies this distribution, and is available at
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7 * http://www.eclipse.org/legal/epl-v10.html
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8 *
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9 * Contributors:
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10 * db4objects - Initial API and implementation
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11 * Boris Bokowski (IBM Corporation) - bug 118429
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12 * Tom Schindl<tom.schindl@bestsolution.at> - bugfix for 217940
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13 */
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14 module org.eclipse.core.internal.databinding.validation.ReadOnlyValidator;
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15
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16 import java.lang.all;
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17
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18 import org.eclipse.core.databinding.validation.IValidator;
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19 import org.eclipse.core.databinding.validation.ValidationStatus;
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20 import org.eclipse.core.internal.databinding.BindingMessages;
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21 import org.eclipse.core.runtime.IStatus;
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22
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23 /**
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24 * ReadOnlyValidator. A validator that can be used as a partial validator for read-only fields.
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25 */
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26 public class ReadOnlyValidator : IValidator {
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27
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28 private static ReadOnlyValidator singleton = null;
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29
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30 /**
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31 * Returns the ReadOnlyValidator
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32 *
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33 * @return the ReadOnlyValidator
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34 */
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35 public static ReadOnlyValidator getDefault() {
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36 if (singleton is null) {
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37 singleton = new ReadOnlyValidator();
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38 }
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39 return singleton;
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40 }
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41
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42 public IStatus validate(Object value) {
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43 // No changes are allowed
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44 return ValidationStatus.error(BindingMessages
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45 .getStringcast(BindingMessages.VALIDATE_NO_CHANGE_ALLOWED_HELP));
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46 }
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47
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48 }
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