/// <summary>
/// Reroute a connector when the role players of its underlying relationship change
/// </summary>
public override void RolePlayerChanged(DslModeling::RolePlayerChangedEventArgs e)
{
if (e == null)
{
throw new global::System.ArgumentNullException("e");
}
global::System.Collections.ObjectModel.ReadOnlyCollection <DslDiagrams::PresentationViewsSubject> connectorLinks = DslDiagrams::PresentationViewsSubject.GetLinksToPresentation(e.ElementLink);
foreach (DslDiagrams::PresentationViewsSubject connectorLink in connectorLinks)
{
// Fix up any binary link shapes attached to the element link.
DslDiagrams::BinaryLinkShape linkShape = connectorLink.Presentation as DslDiagrams::BinaryLinkShape;
if (linkShape != null)
{
global::Company.SlideShowDesigner.SlideShowDesignerDiagram diagram = linkShape.Diagram as global::Company.SlideShowDesigner.SlideShowDesignerDiagram;
if (diagram != null)
{
if (e.NewRolePlayer != null)
{
DslDiagrams::NodeShape fromShape;
DslDiagrams::NodeShape toShape;
diagram.GetSourceAndTargetForConnector(linkShape, out fromShape, out toShape);
if (fromShape != null && toShape != null)
{
if (!object.Equals(fromShape, linkShape.FromShape))
{
linkShape.FromShape = fromShape;
}
if (!object.Equals(linkShape.ToShape, toShape))
{
linkShape.ToShape = toShape;
}
}
else
{
// delete the connector if we cannot find an appropriate target shape.
linkShape.Delete();
}
}
else
{
// delete the connector if the new role player is null.
linkShape.Delete();
}
}
}
}
}