| Programmatically create a semantic element and refresh the view [message #144716] |
Mon, 30 July 2007 05:38 |
Eclipse User |
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Originally posted by: bmoros.um.es
Hello everybody,
I have defined a metamodel where the concepts of Attribute (characterized by
its name and its type) and AttributeInstance (characterized by its name and
its value) are specified. In the metamodel, there is a Ereference
'instanceOf' between AttributeInstance and Attribute, meaning that an
AttributeInstance is an instance of an Attribute. For instance, the
Attribute
A->[name = cost, type = integer] and one AttributeInstance [name = cost,
value = 10, instanceOf -> A].Consequently, in the editor (generated using
GMF) when the instanceOf reference is set, the name and the type of the
AttributeInstance have to be set accordingly.
To achieve this, I have overridden the handleNotificationEvent method in
AttributeInstanceEditPart class to handle the events related to the
instanceOf relationship. When the 'instanceOf' value is set then I create
the 'value' object according to the type of the selected attribute. But it
does not work since I should create the view of the semantic element at the
same time. I have tryed to create a ViewAndElementRequest but it does not
work either. The piece of code in the handleNotificationEvent method
regarding the creation of the request looks like this:
CreateViewAndElementRequest createRequest = new CreateViewAndElementRequest(
elementType,value,this.getDiagramPreferencesHint());
Command command = this.getCommand(createRequest);
DiagramCommandStack commandStack =
this.getDiagramEditDomain().getDiagramCommandStack();
commandStack.execute(command);
I really do not know where I have to create the pair (semantic element-view)
and how this pair is linked to the model and how it is refreshed in the
diagram. Any hint would be appreciated!!!
Thanks in advance for your time,
Bego
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