WhenPartFactoryMethod.java

/**
 * Copyright 2004-2016 Riccardo Solmi. All rights reserved.
 * This file is part of the Whole Platform.
 *
 * The Whole Platform is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * The Whole Platform is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with the Whole Platform. If not, see <http://www.gnu.org/licenses/>.
 */
package org.whole.lang.ui.notations.dynamic.editparts;

import java.util.Optional;

import org.whole.lang.model.IEntity;
import org.whole.lang.ui.editparts.IEditPartFactory;
import org.whole.lang.ui.editparts.IEntityPart;

/**
 * @author Riccardo Solmi
 */
public class WhenPartFactoryMethod<T extends IEditPartFactory> implements IOptionalPartFactoryMethod<T> {
	private IPredicatePartFactoryMethod<T> predicate;
	private IOptionalPartFactoryMethod<T> factoryMethod;

	public WhenPartFactoryMethod(IPredicatePartFactoryMethod<T> predicate, IOptionalPartFactoryMethod<T> factoryMethod) {
		this.predicate = predicate;
		this.factoryMethod = factoryMethod;
	}

	public Optional<IEntityPart> apply(T contextFactory, IEntityPart contextPart, IEntity entity) {
		return predicate.test(contextFactory, contextPart, entity) ? 
				factoryMethod.apply(contextFactory, contextPart, entity) : Optional.empty();
	}
}