Is your feature request related to a problem?

When creating an activity it is important to be able to set the parameters. The parameter has a name, type, and direction (in,out,inout,return). While it is configurable in the activity from the usability point of view the best would be to be able
to configure those settings by clicking the parameter and setting the other settings as well.

Describe the solution you'd like

• Add combobox with label Type (type selector functionality)
• Add combobox Direction (in, out, inout, return), based on the UML standard
• Add combobox Display (or similar label): Name, Type, Name and Type
• When type and directions are set it should be visible on the diagram as well

Relevant UML specification parts:

Mock screen:

Additional hints

As more and more cases we might need the ability to set which attributes shall be visible, maybe this is a common feature and start thinking about that application wise (using DRY principle).