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package io.dico.dicore.event;
import io.dico.dicore.InterfaceChain;
public interface ChainedListener<T> extends InterfaceChain<SimpleListener<T>, ChainedListener<T>>, SimpleListener<T> {
@Override
default ChainedListener<T> getEmptyInstance() {
return ChainedListeners.empty();
}
@Override
default ChainedListener<T> withElement(SimpleListener<T> element) {
if (element == null) {
return this;
}
int count = getElementCount() + 1;
return new ChainedListener<T>() {
@Override
public void accept(T event) {
try {
ChainedListener.this.accept(event);
} finally {
element.accept(event);
}
}
@Override
public ChainedListener<T> withoutLastNode() {
return ChainedListener.this;
}
@Override
public SimpleListener<T> getDelegateOfLastNode() {
return element;
}
@Override
public int getElementCount() {
return count;
}
};
}
}
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