Visual implementation of Block editor and import into ML

Hello all,

I would like to develop a graphical editor that performs calculations based on different blocks that can be selected and connected by the user. Of course, the connection of the blocks to each other is important, in addition, different blocks with different parameters shall be predefined and selected.

Now my question, (since I have not worked with Simulink too often): Is this possible in Simulink and can you tell me functions or opensource projects that can import the corresponding interconnections e.g. in a tree structure of a structs in Matlab? So etspecially this import and nice presentation of data is an open question for me.

Or are there other "graphical editors" besides SImulink? What are pros an cons, of using SL for that kind of task?

Otherwise I would switch to Java with appropriate toolboxes like graphiti.

Thanks!