PredicateBinder.java

package org.andork.bind2;

import java.util.function.Predicate;

public class PredicateBinder<T> extends CachingBinder<Boolean> implements Binding {
	public final Link<T> inputLink = new Link<T>(this);
	public final Predicate<T> p;

	public PredicateBinder(Binder<? extends T> input, Predicate<T> p) {
		this(p);
		inputLink.bind(input);
	}

	public PredicateBinder(Predicate<T> p) {
		this.p = p;
	}

	@Override
	public void update(boolean force) {
		set(p.test(inputLink.get()), force);
	}
}