private void AddTrace(VirtualizingStackPanel vsp, ScrollTraceOp op, ScrollTracingInfo sti, params object[] args)
{
ScrollTraceRecord record = new ScrollTraceRecord(op, vsp, sti.Depth, sti.ItemIndex, _depth, BuildDetail(args));
_traceList.Add(record);
switch (op)
{
default:
break;
case ScrollTraceOp.BeginMeasure:
Push();
break;
case ScrollTraceOp.EndMeasure:
Pop(record);
record.Snapshot = vsp.TakeSnapshot();
Flush(sti.Depth);
break;
case ScrollTraceOp.BeginArrange:
Push();
break;
case ScrollTraceOp.EndArrange:
Pop(record);
record.Snapshot = vsp.TakeSnapshot();
Flush(sti.Depth);
break;
case ScrollTraceOp.BSetAnchor:
Push();
break;
case ScrollTraceOp.ESetAnchor:
Pop(record);
break;
case ScrollTraceOp.BOnAnchor:
Push();
break;
case ScrollTraceOp.ROnAnchor:
Pop(record);
break;
case ScrollTraceOp.SOnAnchor:
Pop();
break;
case ScrollTraceOp.EOnAnchor:
Pop(record);
break;
case ScrollTraceOp.RecycleChildren:
case ScrollTraceOp.RemoveChildren:
record.RevirtualizedChildren = args[2] as List<String>;
break;
}
if (_flushDepth < 0)
{
Flush(_flushDepth);
}
}
private void Pop(ScrollTraceRecord record) { --_depth; record.ChangeOpDepth(-1); }
