private void Paste_Executed(object sender, ExecutedRoutedEventArgs e)
{
XElement root = LoadSerializedDataFromClipBoard();
if (root == null)
{
return;
}
// create DiagramElements
Dictionary <Guid, Guid> mappingOldToNewIDs = new Dictionary <Guid, Guid>();
List <ISelectable> newItems = new List <ISelectable>();
IEnumerable <XElement> itemsXML = root.Elements("DiagramElements").Elements("DiagramElement");
double offsetX = Double.Parse(root.Attribute("OffsetX").Value, CultureInfo.InvariantCulture);
double offsetY = Double.Parse(root.Attribute("OffsetY").Value, CultureInfo.InvariantCulture);
foreach (XElement itemXML in itemsXML)
{
Guid oldID = new Guid(itemXML.Element("ID").Value);
Guid newID = Guid.NewGuid();
mappingOldToNewIDs.Add(oldID, newID);
DiagramElement item = DeserializeDiagramElement(itemXML, newID, offsetX, offsetY);
this.Children.Add(item);
SetConnectionNodeDecoratorTemplate(item);
newItems.Add(item);
}
// update group hierarchy
SelectionService.ClearSelection();
foreach (DiagramElement el in newItems)
{
if (el.ParentID != Guid.Empty)
{
el.ParentID = mappingOldToNewIDs[el.ParentID];
}
}
foreach (DiagramElement item in newItems)
{
if (item.ParentID == Guid.Empty)
{
SelectionService.AddToSelection(item);
}
}
// create Connections
IEnumerable <XElement> connectionsXML = root.Elements("Connections").Elements("Connection");
foreach (XElement connectionXML in connectionsXML)
{
Guid oldSourceID = new Guid(connectionXML.Element("SourceID").Value);
Guid oldTargetID = new Guid(connectionXML.Element("TargetID").Value);
if (mappingOldToNewIDs.ContainsKey(oldSourceID) && mappingOldToNewIDs.ContainsKey(oldTargetID))
{
Guid newSourceID = mappingOldToNewIDs[oldSourceID];
Guid newTargetID = mappingOldToNewIDs[oldTargetID];
String sourceConnectionNodeName = connectionXML.Element("SourceConnectionNodeName").Value;
String targetConnectionNodeName = connectionXML.Element("TargetConnectionNodeName").Value;
ConnectionNode sourceConnectionNode = GetConnectionNode(newSourceID, sourceConnectionNodeName);
ConnectionNode targetConnectionNode = GetConnectionNode(newTargetID, targetConnectionNodeName);
Connection connection = new Connection(sourceConnectionNode, targetConnectionNode);
Canvas.SetZIndex(connection, Int32.Parse(connectionXML.Element("zIndex").Value));
this.Children.Add(connection);
SelectionService.AddToSelection(connection);
}
}
// update paste offset
root.Attribute("OffsetX").Value = (offsetX + 10).ToString();
root.Attribute("OffsetY").Value = (offsetY + 10).ToString();
Clipboard.Clear();
Clipboard.SetData(DataFormats.Xaml, root);
}