/// <exception cref="ArgumentNullException">
/// <paramref name="relationship"/> is null.-or-
/// <paramref name="startShape"/> is null.-or-
/// <paramref name="endShape"/> is null.
/// </exception>
protected Connection(Relationship relationship, Shape startShape, Shape endShape)
{
if (relationship == null)
throw new ArgumentNullException("relationship");
if (startShape == null)
throw new ArgumentNullException("startShape");
if (endShape == null)
throw new ArgumentNullException("endShape");
this.startShape = startShape;
this.endShape = endShape;
InitOrientations();
bendPoints.Add(new BendPoint(startShape, true));
bendPoints.Add(new BendPoint(endShape, false));
startShape.Move += ShapeMoving;
startShape.Resize += StartShapeResizing;
endShape.Move += ShapeMoving;
endShape.Resize += EndShapeResizing;
relationship.Modified += delegate { OnModified(EventArgs.Empty); };
relationship.Detaching += delegate
{
startShape.Move -= ShapeMoving;
startShape.Resize -= StartShapeResizing;
endShape.Move -= ShapeMoving;
endShape.Resize -= EndShapeResizing;
};
relationship.Serializing += delegate(object sender, SerializeEventArgs e)
{
OnSerializing(e);
};
relationship.Deserializing += delegate(object sender, SerializeEventArgs e)
{
OnDeserializing(e);
};
Reroute();
}
void Detach(Relationship relationship)
{
foreach(var m in ProjectInfo.Models)
if(m != this && m.relationships.Contains(relationship))
return ;
relationship.Detach();
}
protected internal void RemoveRelationship(Relationship relationship)
{
if (relationships.Contains(relationship))
{
Detach(relationship);
relationship.Modified -= new EventHandler(ElementChanged);
relationships.Remove(relationship);
OnRelationRemoved(new RelationshipEventArgs(relationship));
}
}
protected void AddRelationship(Relationship relationship)
{
relationships.Add(relationship);
relationship.Modified += new EventHandler(ElementChanged);
OnRelationAdded(new RelationshipEventArgs(relationship));
}
public RelationshipEventArgs(Relationship relationship)
{
this.relationship = relationship;
}
protected override void CopyFrom(Relationship relationship)
{
base.CopyFrom(relationship);
AssociationRelationship association = (AssociationRelationship) relationship;
associationType = association.associationType;
direction = association.direction;
startRole = association.startRole;
endRole = association.endRole;
startMultiplicity = association.startMultiplicity;
endMultiplicity = association.endMultiplicity;
}
protected virtual void CopyFrom(Relationship relationship)
{
label = relationship.label;
}