Choice Pseudostate and Guard Condition in State Diagrams

Question

Hi,

I'm not sure if the "Choice Pseudostate in State Diagrams" feature (see here) has already been requested? If not may I kindly ask the developers to give your favorable consideration?

Without this functionality it's really hard to use this amazing tool in advanced state diagrams projects.

 

Thanks

Tomek R.

 

 

Answer 1

Hello,

You can use:

@startuml
state choice1 <<choice>>
state foo1 <<fork>>
state foo2 <<join>>
state foo3 <<end>>
[*] --> choice1
choice1 --> foo1
choice1 --> foo2
choice1 --> foo3
@enduml

It's not documented (because we are not 100% satisfy by the syntax), but it's working fine.

Regards,

Comments

Is there a way to change the skinparams of those pseudo-states?
For example the background and border color.

---

Found this myself: choice pseudo-state is actually part of the activity diagrams, so the skinparam is set using the `activity` group. Example:

skinparam activity {
    BackgroundColor White
    BorderColor Black
}