private ContextLayoutManager.LayoutQueue.Request _getNewRequest(
RadElement e)
{
ContextLayoutManager.LayoutQueue.Request request1;
if (this._pocket != null)
{
request1 = this._pocket;
this._pocket = request1.Next;
--this._pocketSize;
ContextLayoutManager.LayoutQueue.Request request2;
request1.Prev = request2 = (ContextLayoutManager.LayoutQueue.Request)null;
request1.Next = request2;
}
else
{
ContextLayoutManager layoutManager = e.LayoutManager as ContextLayoutManager;
try
{
request1 = new ContextLayoutManager.LayoutQueue.Request();
}
catch (OutOfMemoryException ex)
{
layoutManager?.setForceLayout(e);
throw ex;
}
}
request1.Target = e;
return(request1);
}
public void Remove(RadElement e)
{
ContextLayoutManager.LayoutQueue.Request request = this.getRequest(e);
if (request == null)
{
return;
}
this._removeRequest(request);
this.setRequest(e, (ContextLayoutManager.LayoutQueue.Request)null);
}
private void ReuseRequest(ContextLayoutManager.LayoutQueue.Request r)
{
r.Target = (RadElement)null;
if (this._pocketSize >= 153)
{
return;
}
r.Next = this._pocket;
this._pocket = r;
++this._pocketSize;
}
internal LayoutQueue()
{
for (int index = 0; index < 153; ++index)
{
this._pocket = new ContextLayoutManager.LayoutQueue.Request()
{
Next = this._pocket
}
}
;
this._pocketSize = 153;
}
internal void RemoveOrphans(RadElement parent)
{
ContextLayoutManager.LayoutQueue.Request next;
for (ContextLayoutManager.LayoutQueue.Request request = this._head; request != null; request = next)
{
RadElement target = request.Target;
next = request.Next;
ulong treeLevel = (ulong)parent.TreeLevel;
if ((long)target.TreeLevel == (long)treeLevel + 1L && target.Parent == parent)
{
this._removeRequest(this.getRequest(target));
this.setRequest(target, (ContextLayoutManager.LayoutQueue.Request)null);
}
}
}
private void _addRequest(RadElement e)
{
ContextLayoutManager.LayoutQueue.Request newRequest = this._getNewRequest(e);
if (newRequest == null)
{
return;
}
newRequest.Next = this._head;
if (this._head != null)
{
this._head.Prev = newRequest;
}
this._head = newRequest;
this.setRequest(e, newRequest);
}
internal RadElement GetTopMost()
{
RadElement radElement = (RadElement)null;
ulong num = ulong.MaxValue;
for (ContextLayoutManager.LayoutQueue.Request request = this._head; request != null; request = request.Next)
{
ulong treeLevel = (ulong)request.Target.TreeLevel;
if (treeLevel < num)
{
num = treeLevel;
radElement = request.Target;
}
}
return(radElement);
}
private void _removeRequest(ContextLayoutManager.LayoutQueue.Request entry)
{
if (entry.Prev == null)
{
this._head = entry.Next;
}
else
{
entry.Prev.Next = entry.Next;
}
if (entry.Next != null)
{
entry.Next.Prev = entry.Prev;
}
this.ReuseRequest(entry);
}
internal override void setRequest(RadElement e, ContextLayoutManager.LayoutQueue.Request r)
{
e.MeasureRequest = r;
}
internal abstract void setRequest(RadElement e, ContextLayoutManager.LayoutQueue.Request r);
