public void CreateDiagram(DiagramModel diagram)
{
if (CurrentProject == null)
{
throw new NullReferenceException("ProjectModel does not exist");
}
if (diagram == null)
{
return;
}
var diagramName = string.IsNullOrEmpty(diagram.Name) ? "diagram" : diagram.Name;
var diagramNumber = 1;
while (CurrentProject.Diagrams.Any(x => x.Name.Equals(diagramName + diagramNumber)))
{
diagramNumber++;
}
diagram.Name = diagramName + diagramNumber;
CreateDiagramViewModel(diagram);
CurrentProject.AddDiagram(diagram);
}