private static void init(Node node) {
if (node.getProperties().get(P_INPUTMAP) == null) {
node.getProperties().put(P_INPUTMAP, InputMap.empty());
node.getProperties().put(P_HANDLERS, new ArrayList<Map.Entry<?, ?>>());
MapChangeListener<Object, Object> listener =
ch -> {
if (!P_INPUTMAP.equals(ch.getKey())) {
return;
}
getHandlers(node)
.forEach(
entry -> {
node.removeEventHandler(
(EventType<Event>) entry.getKey(),
(EventHandler<Event>) entry.getValue());
});
getHandlers(node).clear();
InputMap<?> inputMap = (InputMap<?>) ch.getValueAdded();
inputMap.forEachEventType(
new HandlerConsumer<Event>() {
@Override
public <E extends Event> void accept(
EventType<? extends E> t, InputHandler<? super E> h) {
node.addEventHandler(t, h);
getHandlers(node).add(new SimpleEntry<>(t, h));
}
});
};
node.getProperties().addListener(listener);
}
}
private static List<Map.Entry<EventType<?>, EventHandler<?>>> getHandlers(Node node) {
return (List<Entry<EventType<?>, EventHandler<?>>>) node.getProperties().get(P_HANDLERS);
}
private static void setInputMap(Node node, InputMap<?> im) {
node.getProperties().put(P_INPUTMAP, im);
}
static InputMap<?> getInputMap(Node node) {
init(node);
return (InputMap<?>) node.getProperties().get(P_INPUTMAP);
}