How do I select a DSL shape via API

Question

Hi All

I want select particular Shape programmatically...

public void SelectShape(ModelElement modelElement)

    {

        ShapeElement modelElementShape = PresentationViewsSubject .GetPresentation(modelElement).FirstOrDefault() as ShapeElement ;

 

        Diagram diagram = modelElement.Store.ElementDirectory.AllElements.OfType<Diagram >().FirstOrDefault();

        DiagramItem diagramItem = new DiagramItem (modelElementShape);

        diagram.ActiveDiagramView.Selection.Set(diagramItem);

    }

 

but diagram.ActiveDiagramView value is null ..

what is wrong with my code?

 

 

Thank You

 

Atul Katare

_____________________________

Build Relationship Dynamically

 

Answer 1

Hi Atul,

could you please provide some additional information, especially with respect to the context you are invoking this method from and your general porpuse? I tried to reproduce the issue and diagram.ActiveDiagramView returned the correct object.

Kind regards
Sebastian

Answer 2

Hi Sebastian

I will get Model Element using

            Store store = new Store(typeof(CoreDomainModel), typeof(CoreDesignSurfaceDomainModel),
                                                                                             typeof(ExampleDomainModel));
            using (Transaction txtTransaction = store.TransactionManager.BeginTransaction("Root Transaction"))
            {
                ExampleModel ExampleRoot = ExampleSerializationHelper.Instance.LoadModelAndDiagram
                                                (store, FilePath, FilePath + ".diagram", null, null);

               
               ModelElement modelElement= ExampleRoot .ExampleElement.First();

             //  then I will call SelectShape Method

             Selectshape(modelElement);

                txtTransaction .Commit();
            }

public void SelectShape(ModelElement modelElement)

    {

        ShapeElement modelElementShape = PresentationViewsSubject .GetPresentation(modelElement).FirstOrDefault() as ShapeElement ;

 

        Diagram diagram = modelElement.Store.ElementDirectory.AllElements.OfType<Diagram >().FirstOrDefault();

        DiagramItem diagramItem = new DiagramItem (modelElementShape);

        diagram.ActiveDiagramView.Selection.Set(diagramItem);

    }

Thank You

AtulKatare
_________________________________
Build Relationship Dynamically

Answer 3

Hello, you are opening a model into a new Store, so this Store doesn't have the current active diagram view. I think if you take from the commandset the current opened store and then you get the active diagram view from the diagram, this object wouldn't be null. Regards!!

---

RubenBrenes

Answer 4

Hi Ruben

How to get Store from CommandSet class?
CommandSet class constructor require IServiceProvider, how to pass value?

Thank You..

Answer 5

Hello, DslTools generate a CommandSet class in your DslPackage that you can extend with your own commands. I suppose you want to select the shape responding to some command action. So there, in YourLanguageCommandSet, you can get Store by this.CurrentDocData.Store. Regards!!

---

RubenBrenes

Answer 6

Dude, you should not create a new store for this requirement.

Instead, here you go!

1. Go to your DSL Package
2. Create a partial class for your CommandSet
3. Write a new method, let the name to be what ever you want
4. Write your logic based on this.

I'll give you a sample piece of code for select all command which will work directly for you.

namespace YourNameSpace
{
    /// <summary>
    /// Partial implementation provides the status and command
    /// handlers for Select All Menu
    /// </summary>
    internal partial class YourCommandSet
    {
        /// <summary>
        /// Handler for select all
        /// </summary>
        /// <param name="sender">the object that invokes the method as object</param>
        /// <param name="e">event arguments as EventArgs</param>
        protected override void ProcessOnMenuSelectAllCommand()
        {

            base.ProcessOnMenuSelectAllCommand();

            List<ShapeElement> lstSelectableElements = this.GetSelectableElements()
                ?? new List<ShapeElement>();

            foreach (ShapeElement oShape in lstSelectableElements)
            {
                if (oShape.ModelElement != null)
                {
                    DiagramItem diagramItem = new DiagramItem(oShape);
                    if (this.CurrentYourModelDocView!= null
                        && this.CurrentYourModelDocView.Diagram != null
                        && this.CurrentYourModelDocView.Diagram.ActiveDiagramView != null
                        && this.CurrentYourModelDocView.Diagram.ActiveDiagramView.DiagramClientView != null)
                    {                        
                        this.CurrentYourModelDocView.Diagram.ActiveDiagramView.DiagramClientView.Selection.Add(diagramItem);
                    }
                }
            }


            this.CurrentDocView.SetSelectedComponents(lstSelectableElements);

        }
        /// <summary>
        /// Status handler for select all
        /// </summary>
        /// <param name="command">command invokes the method</param>
        protected override void ProcessOnStatusSelectAllCommand(MenuCommand command)
        {

            base.ProcessOnStatusSelectAllCommand(command);

            List<ShapeElement> lstSelectableElements = this.GetSelectableElements()
                ?? new List<ShapeElement>();

            command.Enabled = lstSelectableElements.Count > 0;
        }

        /// <summary>
        /// Gets the list of the selectable elements
        /// </summary>
        /// <returns>gets the list of the selectable shape elements as generic collection of shape element</returns>
        private List<ShapeElement> GetSelectableElements()
        {

            ReadOnlyCollection<ShapeElement> lstShapeElements = null;
            List<ShapeElement> lstSelectableElements = null;
            Store oStore = null;

            oStore = this.CurrentYourModelDocView.Diagram.Store;

            lstShapeElements = oStore.ElementDirectory.FindElements<ShapeElement>(true);
            lstShapeElements = lstShapeElements ?? new ReadOnlyCollection<ShapeElement>(new List<ShapeElement>());

            lstSelectableElements = (from shape in lstShapeElements
                                     where shape is NodeShape
                                     select shape).ToList();

            return lstSelectableElements;
        }
    }
}

Try this; You have everything selected on Select All (Ctl + A)

---

--Kiran Chand Palakkattiri--
[e-mail]