com.softicar.platform.common.core.callback.CallbackBuilder Maven / Gradle / Ivy

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The SoftiCAR Platform is a lightweight, Java-based library to create interactive business web applications.

There is a newer version: 50.0.0

package com.softicar.platform.common.core.callback;

import com.softicar.platform.common.core.interfaces.INullaryVoidFunction;
import java.util.ArrayList;
import java.util.List;

/**
 * Composes a list of {@link INullaryVoidFunction} into a new
 * {@link INullaryVoidFunction}.
 *
 * @author Alexander Schmidt
 * @author Oliver Richers
 */
public class CallbackBuilder {

	private final List callbacks = new ArrayList<>();

	public CallbackBuilder add(INullaryVoidFunction callback) {

		if (callback != null && !callbacks.contains(callback)) {
			callbacks.add(callback);
		}
		return this;
	}

	public INullaryVoidFunction build() {

		return () -> callbacks.forEach(callback -> callback.apply());
	}
}