public static DiagramSerialize GetSurrogate(object graph, SurrogateSelector selector)
{
//Retrieve the surrogate reference
//Sub classes may have added other surrogates
//Start with the type of the deserialized data
Type type = graph.GetType().UnderlyingSystemType;
ISurrogateSelector iselector = (ISurrogateSelector)selector;
DiagramSerialize surrogate = null;
//Walk through the types until we find a surrogate
while (type != typeof(System.Windows.Forms.UserControl))
{
surrogate = (DiagramSerialize)selector.GetSurrogate(type, new StreamingContext(StreamingContextStates.All), out iselector);
if (surrogate != null)
{
break;
}
type = type.BaseType; //return the base type and try again
}
return(surrogate);
}
private void LoadDiagram(Stream fs, IFormatter formatter)
{
Diagram diagram;
SurrogateSelector selector = new SurrogateSelector();
DiagramSerialize surrogate = new DiagramSerialize();
try
{
selector.AddSurrogate(typeof(Diagram),new StreamingContext(StreamingContextStates.All), surrogate);
//Raise the deserialize event and allow subclasses to add/change the surrogate to their own surrogate
OnDeserialize(formatter,selector);
formatter.SurrogateSelector = selector;
formatter.Binder = Component.Instance.DefaultBinder;
diagram = (Diagram) formatter.Deserialize(fs);
}
catch (Exception ex)
{
if (ex.InnerException == null)
{
throw ex;
}
else
{
throw ex.InnerException;
}
}
finally
{
}
surrogate = Serialization.Serialize.GetSurrogate(diagram,selector);
if (surrogate == null) throw new Exception("A deserialization surrogate could not be found.");
//Update this object using the surrogate and the diagram
surrogate.UpdateObjectReferences();
SuspendEvents = true;
Suspend();
//Copy settings from deserialized object
DiagramSize = diagram.DiagramSize;
Zoom = diagram.Zoom;
ShowTooltips = diagram.ShowTooltips;
CheckBounds = diagram.CheckBounds;
Paged = diagram.Paged;
WorkspaceColor = diagram.WorkspaceColor;
//Copy all layers across
Layers.Clear();
foreach (Layer layer in surrogate.Layers)
{
Layers.Add(layer);
}
Layers.CurrentLayer = surrogate.Layers.CurrentLayer;
//Copy shapes and lines accross
Shapes.Clear();
foreach (Shape shape in surrogate.Shapes.Values)
{
Shapes.Add(shape.Key,shape);
}
Lines.Clear();
foreach (Line line in surrogate.Lines.Values)
{
Lines.Add(line.Key,line);
}
mNavigate = new Navigation.Navigate(this);
Route = new Route();
Route.Container = this;
Margin = new Margin(); //##margin needs to be serialized/deserialized
//Raise the deserialize complete event
OnDeserializeComplete(diagram, formatter, selector);
Resume();
SuspendEvents = false;
Refresh();
}
