public SizePropertyBag(IVirtualFolder owner, AsyncCompletedEventHandler completed)
{
if (owner is ICloneable)
{
this.FOwner = (IVirtualFolder) ((ICloneable) owner).Clone();
}
else
{
this.FOwner = owner;
}
this.FOwnerParent = owner.Parent as IVirtualCachedFolder;
this.FCompleted = completed;
}
private void WatchFolder(IVirtualCachedFolder folder, bool watch)
{
int num;
if ((this.WatchFolderMap != null) && this.WatchFolderMap.TryGetValue(folder, out num))
{
num += watch ? 1 : -1;
if (num == 0)
{
folder.OnChanged -= new EventHandler<VirtualItemChangedEventArgs>(this.FolderChanged);
this.WatchFolderMap.Remove(folder);
}
else
{
this.WatchFolderMap[folder] = num;
}
}
else if (watch)
{
if (this.WatchFolderMap == null)
{
this.WatchFolderMap = new Dictionary<IVirtualCachedFolder, int>();
}
folder.OnChanged += new EventHandler<VirtualItemChangedEventArgs>(this.FolderChanged);
this.WatchFolderMap.Add(folder, 1);
}
}
private void CalculateFolderSize(object value)
{
Stack<IVirtualFolder> stack = new Stack<IVirtualFolder>();
stack.Push(this.FOwner);
Exception error = null;
Stopwatch stopwatch = new Stopwatch();
stopwatch.Start();
try
{
while (stack.Count > 0)
{
using (IVirtualFolder folder = stack.Pop())
{
foreach (IVirtualItem item in folder.GetContent())
{
if (item is IVirtualFolder)
{
stack.Push((IVirtualFolder) item);
}
else
{
object obj2 = item[3];
if (obj2 != null)
{
this.Size += (long) obj2;
}
obj2 = item[5];
if (obj2 != null)
{
this.CompressedSize += Convert.ToInt64(obj2);
}
if ((this.FOwnerParent != null) && (stopwatch.ElapsedMilliseconds >= 500L))
{
stopwatch.Reset();
this.FOwnerParent.RaiseChanged(WatcherChangeTypes.Changed, this.FOwner);
stopwatch.Start();
}
}
}
}
}
}
catch (Exception exception2)
{
error = exception2;
}
finally
{
stopwatch.Stop();
if (this.FOwnerParent != null)
{
this.FOwnerParent.RaiseChanged(WatcherChangeTypes.Changed, this.FOwner);
}
this.FOwner = null;
this.FOwnerParent = null;
if (this.FCompleted != null)
{
this.FCompleted(this, new AsyncCompletedEventArgs(error, false, null));
this.FCompleted = null;
}
}
}