1 /**********************************************
2 * Copyright (C) 2011 Lukas Laag
3 * This file is part of svgreal.
4 *
5 * svgreal is free software: you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation, either version 3 of the License, or
8 * (at your option) any later version.
9 *
10 * svgreal is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
14 *
15 * You should have received a copy of the GNU General Public License
16 * along with svgreal. If not, see http://www.gnu.org/licenses/
17 **********************************************/
18 package org.vectomatic.svg.edit.client.model;
19
20 /**
21 * Interface for classes which provide data validation
22 * for a metadata.
23 * @param <T>
24 * The metadata type
25 * @param <U>
26 * The javascript type which provides the property or object
27 * @author laaglu
28 */
29 public interface IValidator<T, U> {
30 /**
31 * Validates the specified value.
32 * @param model The model object.
33 * @param value The value of this property for the specified model object.
34 * @return null if the value is valid, or a validation error
35 * message if the value is invalid.
36 */
37 ValidationError validate(U model, T value);
38 }