public static void Process()
{
DelayedObjectManager pDelayMan = DelayedObjectManager.PrivGetInstance();
CollObserver pNode = pDelayMan.head;
while (pNode != null)
{
// Fire off listener
pNode.Execute();
pNode = (CollObserver)pNode.pNext;
}
// remove
pNode = pDelayMan.head;
CollObserver pTmp = null;
while (pNode != null)
{
pTmp = pNode;
pNode = (CollObserver)pNode.pNext;
// remove
pDelayMan.PrivDetach(pTmp, ref pDelayMan.head);
}
}
public void Notify()
{
CollObserver pNode = this.pHead;
while (pNode != null)
{
// Fire off listener
pNode.Notify();
pNode = (CollObserver)pNode.pNext;
}
}
//----------------------------------------------------------------------------------
// Private Methods
//----------------------------------------------------------------------------------
private void PrivDetach(CollObserver node, ref CollObserver head)
{
// protection
Debug.Assert(node != null);
if (node.pPrev != null)
{ // middle or last node
node.pPrev.pNext = node.pNext;
}
else
{ // first
head = (CollObserver)node.pNext;
}
if (node.pNext != null)
{ // middle node
node.pNext.pPrev = node.pPrev;
}
}
// ---------------- Methods ----------------
public void Attach(CollObserver pObserver)
{
Debug.Assert(pObserver != null);
pObserver.pSubject = this;
//add to the front
if (this.pHead == null)
{
pHead = pObserver;
pObserver.pPrev = null;
pObserver.pNext = null;
}
else
{
pObserver.pNext = this.pHead;
this.pHead.pPrev = pObserver;
this.pHead = pObserver;
}
}
//----------------------------------------------------------------------------------
// Static Methods
//----------------------------------------------------------------------------------
public static void Attach(CollObserver observer)
{
// protection
Debug.Assert(observer != null);
DelayedObjectManager pDelayMan = DelayedObjectManager.PrivGetInstance();
// add to front
if (pDelayMan.head == null)
{
pDelayMan.head = observer;
observer.pNext = null;
observer.pPrev = null;
}
else
{
observer.pNext = pDelayMan.head;
observer.pPrev = null;
pDelayMan.head.pPrev = observer;
pDelayMan.head = observer;
}
}
public void Detach(CollObserver pObserver)
{
}
// ---------------- Constructor ----------------
public CollSubject()
{
this.pHead = null;
this.pObjA = null;
this.pObjB = null;
}
public void Attach(CollObserver pObserver)
{
// delegate
this.poSubject.Attach(pObserver);
}
//----------------------------------------------------------------------------------
// Constructor
//----------------------------------------------------------------------------------
private DelayedObjectManager()
{
this.head = null;
}