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package javafx.event;

// PENDING_DOC_REVIEW

Represents an event target.

Since:JavaFX 2.0
/**
 * Represents an event target.
 * @since JavaFX 2.0
 */
public interface EventTarget {
    
Construct an event dispatch chain for this target. The event dispatch chain contains event dispatchers which might be interested in processing of events targeted at this EventTarget. This event target is not automatically added to the chain, so if it wants to process events, it needs to add an EventDispatcher for itself to the chain. 

In the case the event target is part of some hierarchy, the chain for it
is usually built from event dispatchers collected from the root of the
hierarchy to the event target.


The event dispatch chain is constructed by modifications to the provided
initial event dispatch chain. The returned chain should have the initial
chain at its end so the dispatchers should be prepended to the initial
chain.


The caller shouldn't assume that the initial chain remains unchanged nor
that the returned value will reference a different chain.

Params:
  • tail – the initial chain to build from
Returns:the resulting event dispatch chain for this target
/**
     * Construct an event dispatch chain for this target. The event dispatch
     * chain contains event dispatchers which might be interested in processing
     * of events targeted at this {@code EventTarget}. This event target is
     * not automatically added to the chain, so if it wants to process events,
     * it needs to add an {@code EventDispatcher} for itself to the chain.
     * <p>
     * In the case the event target is part of some hierarchy, the chain for it
     * is usually built from event dispatchers collected from the root of the
     * hierarchy to the event target.
     * <p>
     * The event dispatch chain is constructed by modifications to the provided
     * initial event dispatch chain. The returned chain should have the initial
     * chain at its end so the dispatchers should be prepended to the initial
     * chain.
     * <p>
     * The caller shouldn't assume that the initial chain remains unchanged nor
     * that the returned value will reference a different chain.
     *
     * @param tail the initial chain to build from
     * @return the resulting event dispatch chain for this target
     */
    EventDispatchChain buildEventDispatchChain(EventDispatchChain tail);
}