Issue with Opening Diagrams Directly from Tree Representation in Sirius

[hoajie]

Hello Sirius Community,

Following some helpful guidance from a Sirius collaborator, I successfully managed to display diagrams within the tree representation in my project, similar to the example given in the https://github.com/user-attachments/files/17491450/TreeSampleProject-v3.zip

While the display of diagrams in the tree view works, I've encountered an issue with opening these diagrams directly. Normally, in Sirius, there is an "Open" action available on right-click that allows users to open any previously created diagrams. However, when I try to double-click the diagrams displayed in the tree (or even single-click), nothing happens. Ideally, I would like to enable the diagrams to open directly upon double-clicking within the tree.

Could anyone advise on a solution for this? Specifically:

Is there a way to configure the tree items in such a way that a double-click on a diagram node opens it directly, instead of having to rely on the "Open" option from the context menu?
Are there specific configuration steps or additional code needed for this interaction to work?
Any advice or examples would be greatly appreciated!

Thank you,
hoajie