/// <summary>
/// Called whenever a child element is added to a diagram.
/// </summary>
/// <param name="e"></param>
public override void ElementAdded(ElementAddedEventArgs e)
{
base.ElementAdded(e);
DiagramHasChildren con = e.ModelElement as DiagramHasChildren;
if (con != null)
{
NodeShape nodeShape = con.ChildShape;
Diagram diagram = con.Diagram;
if (nodeShape != null && diagram != null)
{
if (nodeShape.IsDeleted)
{
return;
}
diagram.AddToShapeMapping(nodeShape);
if (nodeShape.Location == PointD.Empty)
{
nodeShape.SetAtFreePositionOnParent();
}
}
else
{
con.Delete();
}
}
}
/// <summary>
/// Called whenever a model element is added to the store.
/// </summary>
/// <param name="sender">ViewModelStore</param>
/// <param name="args">Event Arguments for notification of the creation of new model element.</param>
private void OnElementAdded(object sender, ElementAddedEventArgs args)
{
if (!ModelData.DoSendModelEvents)
{
return;
}
// update shape mapping (this is required, becauso undo/redo does not trigger events)
if (args.ModelElement is DiagramHasChildren)
{
DiagramHasChildren con = args.ModelElement as DiagramHasChildren;
if (con != null)
{
NodeShape nodeShape = con.ChildShape;
Diagram diagram = con.Diagram;
if (nodeShape != null && diagram != null)
{
if (nodeShape.IsDeleted)
{
return;
}
diagram.AddToShapeMapping(nodeShape);
}
}
}
else if (args.ModelElement is ShapeElementContainsChildShapes)
{
ShapeElementContainsChildShapes con = args.ModelElement as ShapeElementContainsChildShapes;
if (con != null)
{
NodeShape childShape = con.ChildShape;
NodeShape parentShape = con.ParentShape;
if (childShape != null && parentShape != null)
{
if (childShape.IsDeleted)
{
return;
}
if (parentShape.IsDeleted)
{
return;
}
parentShape.AddToShapeMapping(childShape);
}
}
}
}
public override void ElementAdded(ElementAddedEventArgs e)
{
base.ElementAdded(e);
DiagramHasLinkShapes con = e.ModelElement as DiagramHasLinkShapes;
if (con != null)
{
LinkShape linkShape = con.LinkShape;
Diagram diagram = con.Diagram;
if (linkShape != null && diagram != null)
{
if (linkShape.IsDeleted)
{
return;
}
if (linkShape.SourceAnchor == null || linkShape.TargetAnchor == null)
{
throw new InvalidOperationException("LinkShape needs to have from and to anchors.");
}
if (linkShape.SourceAnchor.FromShape == null || linkShape.TargetAnchor.ToShape == null)
{
throw new InvalidOperationException("LinkShape anchors need to have from and to shape.");
}
diagram.AddToShapeMapping(linkShape);
if (linkShape.EdgePoints.Count == 0)
{
linkShape.Layout(FixedGeometryPoints.None);
}
else
{
linkShape.UpdateLinkPlacement();
if (!con.Store.InSerializationTransaction)
{
linkShape.Layout(FixedGeometryPoints.SourceAndTarget);
}
}
}
}
}
