| /******************************************************************************* |
| * Copyright (c) 2014 Dirk Fauth and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * Dirk Fauth <dirk.fauth@googlemail.com> - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.e4.core.services.nls; |
| |
| /** |
| * Function interface that is used to bind a property of an object (e.g. a SWT |
| * control) to a field of a Messages instance. This interface is intended to be |
| * used with implementations that use Java 8, so it is possible to operate using |
| * method references and lambdas. |
| * <p> |
| * This is a functional interface whose functional method is {@link #apply(M)}. |
| * </p> |
| * <p> |
| * When updating to Java 8 this interface can be removed and replaced with the |
| * general <code>java.util.function.Function</code> |
| * </p> |
| * |
| * @since 2.0 |
| * |
| * @param <M> |
| * the message class type |
| */ |
| public interface MessageFunction<M> { |
| |
| /** |
| * |
| * @param m |
| * The message instance from which the value should be retrieved. |
| * @return The message value out of the given messages instance. |
| */ |
| String apply(M m); |
| } |
