FunctionBinder.java

package org.andork.bind2;

import java.util.function.Function;

public class FunctionBinder<I, O> extends CachingBinder<O> implements Binding {
	public final Link<I> inputLink = new Link<I>(this);
	public final Function<I, O> fn;

	public FunctionBinder(Binder<? extends I> input, Function<I, O> fn) {
		this(fn);
		inputLink.bind(input);
	}

	public FunctionBinder(Function<I, O> fn) {
		this.fn = fn;
	}

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