Camunda-modeler: Delete message definitions (i.e. from ReceiveTask)

[leolux]

The UI allows to add messge definitions but not to remove them.

Idea: Provide list of global entities (messages, errors, ...) on the diagram root. Users are able to edit these elements there and add/remove them.

__Describe the solution you'd like__

• [ ] inspect global list of message definitions
• [ ] keep track of which message definitions are actually used
• [ ] remove message definitions (and properly unplug them from message events)

[pedesen]

Hey leolux,

it is possible to remove the reference to a message from events by clicking the last (empty) dropdown icon:

Does this fit your needs? Or do you want to get rid of the message itself (which is currently not yet possible using the modeler).

[leolux]

The second option would be better because the xml still contains all message defintions even if not used.

[falko]

I have seen this feature missing at multiple customers. Sometimes the UI seems to lead users into creating new messages accidentally even if the intent was selecting an existing one.

[falko]

The same functionality is needed for all global elements, e.g. errors, signals, escalations

[MaxTru]

Also reported here: https://github.com/camunda/camunda-modeler/issues/1930