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package com.sun.javafx.event;

import javafx.event.Event;

An EventDispatcher which represents a chain of event dispatchers, but can still be set or replaced as a single entity.
/** * An {@code EventDispatcher} which represents a chain of event dispatchers, but * can still be set or replaced as a single entity. */
public abstract class CompositeEventDispatcher extends BasicEventDispatcher { public abstract BasicEventDispatcher getFirstDispatcher(); public abstract BasicEventDispatcher getLastDispatcher(); @Override public final Event dispatchCapturingEvent(Event event) { BasicEventDispatcher childDispatcher = getFirstDispatcher(); while (childDispatcher != null) { event = childDispatcher.dispatchCapturingEvent(event); if (event.isConsumed()) { break; } childDispatcher = childDispatcher.getNextDispatcher(); } return event; } @Override public final Event dispatchBubblingEvent(Event event) { // need to dispatch in reversed direction BasicEventDispatcher childDispatcher = getLastDispatcher(); while (childDispatcher != null) { event = childDispatcher.dispatchBubblingEvent(event); if (event.isConsumed()) { break; } childDispatcher = childDispatcher.getPreviousDispatcher(); } return event; } }