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The JavaFX implementation of the Interacto library

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/*
 * Interacto
 * Copyright (C) 2020 Arnaud Blouin
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * This program 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 General Public License for more details.
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see .
 */
package io.github.interacto.jfx.interaction;

import io.github.interacto.fsm.InputState;
import io.github.interacto.fsm.OutputState;
import java.util.Collections;
import java.util.Set;
import javafx.event.Event;
import javafx.scene.input.ScrollEvent;

/**
 * A scroll event transition.
 * @author Arnaud Blouin
 */
public class ScrollTransition extends InputEventTransition {
	public ScrollTransition(final OutputState srcState, final InputState tgtState) {
		super(srcState, tgtState);
	}

	@Override
	protected ScrollEvent accept(final Event event) {
		return event instanceof ScrollEvent && event.getEventType() == ScrollEvent.SCROLL ? (ScrollEvent) event : null;
	}

	@Override
	public Set