/// <summary>
/// Called by the base ConnectAction class to create the underlying relationship.
/// </summary>
/// <remarks>
/// This implementation delegates calls to the ConnectionBuilder NodeReferencesTargetsBuilder.
/// </remarks>
public override void CreateConnection(DslDiagrams::ShapeElement sourceShapeElement, DslDiagrams::ShapeElement targetShapeElement, DslDiagrams::PaintFeedbackArgs paintFeedbackArgs)
{
if (sourceShapeElement == null)
{
throw new global::System.ArgumentNullException("sourceShapeElement");
}
if (targetShapeElement == null)
{
throw new global::System.ArgumentNullException("targetShapeElement");
}
sourceShapeElement = RemovePassThroughShapes(sourceShapeElement);
targetShapeElement = RemovePassThroughShapes(targetShapeElement);
DslModeling::ModelElement sourceElement = sourceShapeElement.ModelElement;
if (sourceElement == null)
{
sourceElement = sourceShapeElement;
}
DslModeling::ModelElement targetElement = targetShapeElement.ModelElement;
if (targetElement == null)
{
targetElement = targetShapeElement;
}
NodeReferencesTargetsBuilder.Connect(sourceElement, targetElement);
}
/// <summary>
/// Called by the base ConnectAction class to determine if the given shapes can be connected.
/// </summary>
/// <remarks>
/// This implementation delegates calls to the ConnectionBuilder NodeReferencesTargetsBuilder.
/// </remarks>
public override bool CanCreateConnection(DslDiagrams::ShapeElement sourceShapeElement, DslDiagrams::ShapeElement targetShapeElement, ref string connectionWarning)
{
bool canConnect = true;
if (sourceShapeElement == null)
{
throw new global::System.ArgumentNullException("sourceShapeElement");
}
sourceShapeElement = RemovePassThroughShapes(sourceShapeElement);
DslModeling::ModelElement sourceElement = sourceShapeElement.ModelElement;
if (sourceElement == null)
{
sourceElement = sourceShapeElement;
}
DslModeling::ModelElement targetElement = null;
if (targetShapeElement != null)
{
targetShapeElement = RemovePassThroughShapes(targetShapeElement);
targetElement = targetShapeElement.ModelElement;
if (targetElement == null)
{
targetElement = targetShapeElement;
}
}
// base.CanCreateConnection must be called to check whether existing Locks prevent this link from getting created.
canConnect = base.CanCreateConnection(sourceShapeElement, targetShapeElement, ref connectionWarning);
if (canConnect)
{
if (targetShapeElement == null)
{
return(NodeReferencesTargetsBuilder.CanAcceptSource(sourceElement));
}
else
{
return(NodeReferencesTargetsBuilder.CanAcceptSourceAndTarget(sourceElement, targetElement));
}
}
else
{
//return false
return(canConnect);
}
}