/**
* called when one of this node's children updates it's stop-token,
* so that this node can potentially take action; maybe by setting
* the same stop-token IF the child was the very-last in this node's
* list of children.
*/
private void notifyChildStopTokenChange(LinkedListTree child, LinkedListToken newStop)
{
// TODO: maybe move to delegates
if (isLast(child) && (isSameStopToken(child) || isNoStopToken(child)))
{
setStopToken(newStop);
}
}
public LinkedListToken setStopToken(LinkedListToken stopToken)
{
if (parent != null)
{
parent.notifyChildStopTokenChange(this, stopToken);
}
return(this.stopToken = stopToken);
}
/**
* called when one of this node's children updates it's start-token,
* so that this node can potentially take action; maybe by setting
* the same start-token IF the child was the very-first in this node's
* list of children.
*/
private void notifyChildStartTokenChange(LinkedListTree child, LinkedListToken newStart)
{
// TODO: maybe move to delegates
if (isFirst(child) && isSameStartToken(child))
{
setStartToken(newStart);
}
}
public void setStartToken(LinkedListToken startToken)
{
if (parent != null)
{
parent.notifyChildStartTokenChange(this, startToken);
}
this.startToken = startToken;
}
public void setPrev(LinkedListToken prev)
{
if (this == prev)
{
throw new ArgumentException("Token stream loop detected");
}
this.prev = prev;
if (prev != null)
{
prev.next = this;
}
}
public void setNext(LinkedListToken next)
{
if (this == next)
{
throw new ArgumentException("Token stream loop detected (" + ToString() + ")");
}
this.next = next;
if (next != null)
{
next.prev = this;
}
}
public void delete()
{
if (prev != null)
{
prev.next = next;
}
if (next != null)
{
next.prev = prev;
}
next = prev = null;
}
public void beforeInsert(LinkedListToken insert)
{
if (insert.getPrev() != null)
{
throw new ArgumentException("beforeInsert(" + insert + ") : prev was not null");
}
if (insert.getNext() != null)
{
throw new ArgumentException("beforeInsert(" + insert + ") : next was not null");
}
insert.prev = prev;
insert.next = this;
if (prev != null)
{
prev.next = insert;
}
prev = insert;
}
public void afterInsert(LinkedListToken insert)
{
if (insert.getPrev() != null)
{
throw new ArgumentException("afterInsert(" + insert + ") : prev was not null");
}
if (insert.getNext() != null)
{
throw new ArgumentException("afterInsert(" + insert + ") : next was not null");
}
insert.next = next;
insert.prev = this;
if (next != null)
{
next.prev = insert;
}
next = insert;
}
public void setInitialInsertionBefore(LinkedListToken insert)
{
initialInsertionBefore = insert;
}
public void setInitialInsertionAfter(LinkedListToken insert)
{
initialInsertionAfter = insert;
}
public void addToken(int index, LinkedListToken append)
{
tokenListUpdater.AddToken(this, index, append);
}
public void appendToken(LinkedListToken append)
{
tokenListUpdater.AppendToken(this, append);
}
