private Connector GetConnector(Guid itemID, String connectorName)
{
DesignerItem designerItem = (from item in this.Children.OfType <DesignerItem>()
where item.ID == itemID
select item).FirstOrDefault();
Control connectorDecorator = designerItem.Template.FindName("PART_ConnectorDecorator", designerItem) as Control;
connectorDecorator.ApplyTemplate();
return(connectorDecorator.Template.FindName(connectorName, connectorDecorator) as Connector);
}
private void SetConnectorDecoratorTemplate(DesignerItem item)
{
if (item.ApplyTemplate() && item.Content is UIElement)
{
ControlTemplate template = DesignerItem.GetConnectorDecoratorTemplate(item.Content as UIElement);
Control decorator = item.Template.FindName("PART_ConnectorDecorator", item) as Control;
if (decorator != null && template != null)
{
decorator.Template = template;
}
}
}
private static DesignerItem DeserializeDesignerItem(XElement itemXML, Guid id, double OffsetX, double OffsetY)
{
DesignerItem item = new DesignerItem(id);
item.Width = Double.Parse(itemXML.Element("Width").Value, CultureInfo.InvariantCulture);
item.Height = Double.Parse(itemXML.Element("Height").Value, CultureInfo.InvariantCulture);
item.ParentID = new Guid(itemXML.Element("ParentID").Value);
item.IsGroup = Boolean.Parse(itemXML.Element("IsGroup").Value);
Canvas.SetLeft(item, Double.Parse(itemXML.Element("Left").Value, CultureInfo.InvariantCulture) + OffsetX);
Canvas.SetTop(item, Double.Parse(itemXML.Element("Top").Value, CultureInfo.InvariantCulture) + OffsetY);
Canvas.SetZIndex(item, Int32.Parse(itemXML.Element("zIndex").Value));
Object content = XamlReader.Load(XmlReader.Create(new StringReader(itemXML.Element("Content").Value)));
item.Content = content;
return(item);
}
protected override void OnDrop(DragEventArgs e)
{
base.OnDrop(e);
DragObject dragObject = e.Data.GetData(typeof(DragObject)) as DragObject;
if (dragObject != null && !String.IsNullOrEmpty(dragObject.Xaml))
{
DesignerItem newItem = null;
Object content = XamlReader.Load(XmlReader.Create(new StringReader(dragObject.Xaml)));
if (content != null)
{
newItem = new DesignerItem();
newItem.Content = content;
Point position = e.GetPosition(this);
if (dragObject.DesiredSize.HasValue)
{
Size desiredSize = dragObject.DesiredSize.Value;
newItem.Width = desiredSize.Width;
newItem.Height = desiredSize.Height;
DesignerCanvas.SetLeft(newItem, Math.Max(0, position.X - newItem.Width / 2));
DesignerCanvas.SetTop(newItem, Math.Max(0, position.Y - newItem.Height / 2));
}
else
{
DesignerCanvas.SetLeft(newItem, Math.Max(0, position.X));
DesignerCanvas.SetTop(newItem, Math.Max(0, position.Y));
}
Canvas.SetZIndex(newItem, this.Children.Count);
this.Children.Add(newItem);
SetConnectorDecoratorTemplate(newItem);
//update selection
this.SelectionService.SelectItem(newItem);
newItem.Focus();
}
e.Handled = true;
}
}
private void CopyCurrentSelection()
{
IEnumerable <DesignerItem> selectedDesignerItems =
this.SelectionService.CurrentSelection.OfType <DesignerItem>();
List <Connection> selectedConnections =
this.SelectionService.CurrentSelection.OfType <Connection>().ToList();
foreach (Connection connection in this.Children.OfType <Connection>())
{
if (!selectedConnections.Contains(connection))
{
DesignerItem sourceItem = (from item in selectedDesignerItems
where item.ID == connection.Source.ParentDesignerItem.ID
select item).FirstOrDefault();
DesignerItem sinkItem = (from item in selectedDesignerItems
where item.ID == connection.Sink.ParentDesignerItem.ID
select item).FirstOrDefault();
if (sourceItem != null &&
sinkItem != null &&
BelongToSameGroup(sourceItem, sinkItem))
{
selectedConnections.Add(connection);
}
}
}
XElement designerItemsXML = SerializeDesignerItems(selectedDesignerItems);
XElement connectionsXML = SerializeConnections(selectedConnections);
XElement root = new XElement("Root");
root.Add(designerItemsXML);
root.Add(connectionsXML);
root.Add(new XAttribute("OffsetX", 10));
root.Add(new XAttribute("OffsetY", 10));
Clipboard.Clear();
Clipboard.SetData(DataFormats.Xaml, root);
}
private void Open_Executed(object sender, ExecutedRoutedEventArgs e)
{
XElement root = LoadSerializedDataFromFile();
if (root == null)
{
return;
}
this.Children.Clear();
this.SelectionService.ClearSelection();
IEnumerable <XElement> itemsXML = root.Elements("DesignerItems").Elements("DesignerItem");
foreach (XElement itemXML in itemsXML)
{
Guid id = new Guid(itemXML.Element("ID").Value);
DesignerItem item = DeserializeDesignerItem(itemXML, id, 0, 0);
this.Children.Add(item);
SetConnectorDecoratorTemplate(item);
}
this.InvalidateVisual();
IEnumerable <XElement> connectionsXML = root.Elements("Connections").Elements("Connection");
foreach (XElement connectionXML in connectionsXML)
{
Guid sourceID = new Guid(connectionXML.Element("SourceID").Value);
Guid sinkID = new Guid(connectionXML.Element("SinkID").Value);
String sourceConnectorName = connectionXML.Element("SourceConnectorName").Value;
String sinkConnectorName = connectionXML.Element("SinkConnectorName").Value;
Connector sourceConnector = GetConnector(sourceID, sourceConnectorName);
Connector sinkConnector = GetConnector(sinkID, sinkConnectorName);
Connection connection = new Connection(sourceConnector, sinkConnector);
Canvas.SetZIndex(connection, Int32.Parse(connectionXML.Element("zIndex").Value));
this.Children.Add(connection);
}
}
private void Paste_Executed(object sender, ExecutedRoutedEventArgs e)
{
XElement root = LoadSerializedDataFromClipBoard();
if (root == null)
{
return;
}
// create DesignerItems
Dictionary <Guid, Guid> mappingOldToNewIDs = new Dictionary <Guid, Guid>();
List <ISelectable> newItems = new List <ISelectable>();
IEnumerable <XElement> itemsXML = root.Elements("DesignerItems").Elements("DesignerItem");
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);
DesignerItem item = DeserializeDesignerItem(itemXML, newID, offsetX, offsetY);
this.Children.Add(item);
SetConnectorDecoratorTemplate(item);
newItems.Add(item);
}
// update group hierarchy
SelectionService.ClearSelection();
foreach (DesignerItem el in newItems)
{
if (el.ParentID != Guid.Empty)
{
el.ParentID = mappingOldToNewIDs[el.ParentID];
}
}
foreach (DesignerItem 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 oldSinkID = new Guid(connectionXML.Element("SinkID").Value);
if (mappingOldToNewIDs.ContainsKey(oldSourceID) && mappingOldToNewIDs.ContainsKey(oldSinkID))
{
Guid newSourceID = mappingOldToNewIDs[oldSourceID];
Guid newSinkID = mappingOldToNewIDs[oldSinkID];
String sourceConnectorName = connectionXML.Element("SourceConnectorName").Value;
String sinkConnectorName = connectionXML.Element("SinkConnectorName").Value;
Connector sourceConnector = GetConnector(newSourceID, sourceConnectorName);
Connector sinkConnector = GetConnector(newSinkID, sinkConnectorName);
Connection connection = new Connection(sourceConnector, sinkConnector);
Canvas.SetZIndex(connection, Int32.Parse(connectionXML.Element("zIndex").Value));
this.Children.Add(connection);
SelectionService.AddToSelection(connection);
}
}
DesignerCanvas.BringToFront.Execute(null, this);
// update paste offset
root.Attribute("OffsetX").Value = (offsetX + 10).ToString();
root.Attribute("OffsetY").Value = (offsetY + 10).ToString();
Clipboard.Clear();
Clipboard.SetData(DataFormats.Xaml, root);
}