private static void putInStack(ScrollableCanvas scrollableCanvas, Dictionary <long, FixedSizedStack <byte[]> > stack)
{
long id = scrollableCanvas.id;
Stream stream = new MemoryStream();
new BinaryFormatter().Serialize(stream, scrollableCanvas);
if (stack.ContainsKey(id))
{
FixedSizedStack <byte[]> fsq = stack[id];
fsq.Push(StreamUtils.ReadFromStream(stream));
}
else
{
FixedSizedStack <byte[]> fsq = new FixedSizedStack <byte[]>();
fsq.Push(StreamUtils.ReadFromStream(stream));
stack.Add(id, fsq);
}
}
public static ScrollableCanvas proceed(long canvasId, Dictionary <long, FixedSizedStack <byte[]> > stack)
{
if (stack.ContainsKey(canvasId))
{
FixedSizedStack <byte[]> stck = stack[canvasId];
if (stck.HasElements())
{
byte[] canvas = stck.Pop();
Stream stream = StreamUtils.readFromByteArray(canvas);
return((ScrollableCanvas) new BinaryFormatter().Deserialize(stream));
}
else
{
return(null);
}
}
return(null);
}
