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