private bool IsLinkUniqueBothWays(UseCaseDiagramLinkData linkData, string category)
{
int count1 = (diagram.LinksSource as ObservableCollection <UseCaseDiagramLinkData>)
.Count(x => x.From == linkData.From && x.To == linkData.To && x.Category == category);
int count2 = (diagram.LinksSource as ObservableCollection <UseCaseDiagramLinkData>)
.Count(x => x.From == linkData.To && x.To == linkData.From && x.Category == category);
return(count1 + count2 < 2);
}
private bool IsLinkUnique(UseCaseDiagramLinkData linkData, string category)
{
if ((diagram.LinksSource as ObservableCollection <UseCaseDiagramLinkData>)
.Count(x => x.From == linkData.From && x.To == linkData.To && x.Category == category) > 1)
{
return(false);
}
else
{
return(true);
}
}
private void diagram_LinkRelinked(object sender, Northwoods.GoXam.DiagramEventArgs e)
{
Link link = (e.Part as Link);
UseCaseDiagramLinkData linkData = link.Data as UseCaseDiagramLinkData;
UseCaseDiagramNodeData fromData = link.FromData as UseCaseDiagramNodeData;
UseCaseDiagramNodeData toData = link.ToData as UseCaseDiagramNodeData;
var isValid = CheckLink(fromData, toData, linkData, linkData.Category);
if (!isValid)
{
(diagram.LinksSource as ObservableCollection <UseCaseDiagramLinkData>).Remove(linkData);
}
}
private bool CheckLink(UseCaseDiagramNodeData fromData, UseCaseDiagramNodeData toData, UseCaseDiagramLinkData linkData, string category)
{
if (
(category == Constants.UML_UCD_ANCHOR)
&&
(fromData.Category == Constants.UML_UCD_EDITABLE_NOTE || toData.Category == Constants.UML_UCD_EDITABLE_NOTE)
&&
(fromData.Category != toData.Category)
&&
(fromData.Category != Constants.UML_UCD_NOTE)
&&
(toData.Category != Constants.UML_UCD_NOTE)
)
{
linkData.Category = category;
linkData.Color = Constants.VALID_COLOR;
return(IsLinkUniqueBothWays(linkData, category));
}
else
{
string relationship = Uml4Upmm.CheckUCDRelationship(fromData.IRI, toData.IRI, UseCaseDiagramPage.IsValidatingWithModel, out string color, category);
if (relationship == null)
{
return(false);
}
else
{
linkData.Category = category;
linkData.Text = relationship == "" ? relationship : "<<" + relationship + ">>";
linkData.Color = color;
}
}
return(IsLinkUnique(linkData, category));
}