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package org.madore.damlengine;
import java.util.Collection;
import java.util.LinkedList;
public final class TodoDeque {
private LinkedList<TodoItem> deque;
public TodoDeque() {
deque = new LinkedList<TodoItem>();
}
public void registerAtEnd(TodoItem it) {
it.ownerDeque = this;
deque.addLast(it);
}
public void registerAtEnd(Collection<? extends TodoItem> them) {
for ( TodoItem it : them )
it.ownerDeque = this;
deque.addAll(them);
}
public void registerAtStart(TodoItem it) {
it.ownerDeque = this;
deque.addFirst(it);
}
public void registerAtStart(Collection<? extends TodoItem> them) {
for ( TodoItem it : them )
it.ownerDeque = this;
deque.addAll(0, them);
}
public TodoItem removeNext() {
return deque.poll();
}
public boolean dispatchOne() {
TodoItem it = removeNext();
if ( it != null ) {
assert(it.ownerDeque == this);
it.handle();
return true;
} else
return false;
}
public void dispatchLoop() {
while ( dispatchOne() )
;
}
}
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