/// <summary>
/// removes the rootnode representig the given element
/// unless it this node is the first rootnode.
/// In that case it simply returns false
/// </summary>
/// <param name="sourceElement">the element</param>
private bool removeRootNode(UML.Extended.UMLItem sourceElement)
{
if (sourceElement != null)
{
for (int i = this.NavigatorTree.Nodes.Count - 1; i >= 0; i--)
{
TreeNode node = this.NavigatorTree.Nodes[i];
if (node != null)
{
if (sourceElement.Equals(node.Tag))
{
if (i > 0)
{
try
{
node.Remove();
}
catch (NullReferenceException)
{
//sometimes we get a nullpointer exception here for unknown reasons.
//just ignore it and return true
return(true);
}
return(true);
}
else
{
//if the node is the first root node then don't remove it but return false
return(false);
}
}
}
}
}
return(true);
}
public void selectItem(UML.Extended.UMLItem itemToSelect)
{
if (itemToSelect is Operation)
{
bool found = false;
//if the item is a relation or an operation then search through the links first
foreach (DiagramLinkWrapper diagramLinkWrapper in this.diagramLinkWrappers)
{
if (itemToSelect is Operation &&
diagramLinkWrapper.relation is Message)
{
Message message = (Message)diagramLinkWrapper.relation;
if (itemToSelect.Equals(message.calledOperation))
{
this.wrappedDiagram.SelectedConnector = message.wrappedConnector;
found = true;
//done, no need to loop further
break;
}
}
}
//The operation could also be called in an Action.
if (!found)
{
List <UML.Actions.BasicActions.CallOperationAction> actions = ((Operation)itemToSelect).getDependentCallOperationActions().ToList();
List <UML.Diagrams.DiagramElement> diagramObjects = this.diagramObjectWrappers.ToList();
foreach (Action action in actions)
{
//try to find an diagramObjectwrapper that refrences the action
UML.Diagrams.DiagramElement diagramObject = diagramObjects.Find(
x => x.element.Equals(action));
if (diagramObject != null)
{
//found it, select the action and break out of for loop
this.selectItem(action);
found = true;
break;
}
}
}
if (!found)
{
//can't find a message on this diagram that calls the operation.
//then we try it with the operations parent
this.selectItem(((Operation)itemToSelect).owner);
}
}
else if (itemToSelect is ConnectorWrapper)
{
this.wrappedDiagram.SelectedConnector = ((ConnectorWrapper)itemToSelect).wrappedConnector;
//check if it worked
if (wrappedDiagram.SelectedConnector == null &&
itemToSelect is Message)
{
this.selectItem(((Message)itemToSelect).calledOperation);
}
}
else if (itemToSelect is ElementWrapper)
{
ElementWrapper elementToSelect = (ElementWrapper)itemToSelect;
this.wrappedDiagram.SelectedObjects.AddNew(elementToSelect.wrappedElement.ElementID.ToString(),
elementToSelect.wrappedElement.Type);
}
}