public override bool GetStandardValuesExclusive(ITypeDescriptorContext context)
{
// BUG: the value of context.Instance should always be the entity itself, since the
// domain property is defined on the Entity class. However, currently it is shape, if
// you select it on the design surface. Code below works around this.
PresentationElement pe = context.Instance as PresentationElement;
if (pe != null)
{
//entity = pe.ModelElement as Entity;
connection = pe.ModelElement as SchemaModelItemHasSchemaModelItem;
if (connection != null)
{
selected = true;
return(true);
}
else
{
selected = false;
}
return(false);
}
else
{
connection = context.Instance as SchemaModelItemHasSchemaModelItem;
if (connection != null)
{
selected = true;
return(true);
}
else
{
selected = false;
}
return(false);
}
//return connection != null ? true : false;
}
/// <summary>
/// Called when a SchemaModelItemHasSchemaModelItem relationship is created.
/// </summary>
/// <param name="e">Argument to event</param>
public override void ElementAdded(ElementAddedEventArgs e)
{
if (e == null)
{
throw new ArgumentNullException("e");
}
SchemaModelItemHasSchemaModelItem relationship = e.ModelElement as SchemaModelItemHasSchemaModelItem;
if (relationship != null)
{
// M1: Get the diagram's (single) root class
// M3: Expand to support arbirary roots with the help of the containment tree
IList roots = relationship.Store.ElementDirectory.GetElements(SchemaModel.MetaClassGuid);
if (roots.Count == 1)
{
SchemaModel root = roots[0] as SchemaModel;
if (root != null)
{
Microsoft.VisualStudio.Modeling.Diagrams.Diagram.FixUpDiagram(root, relationship);
}
}
}
}
