Constants from message definition not displayed

[yossioo]

No preview of constants from the msg file

yossi@laptop-yo ~:
$ ros2 msg show visualization_msgs/msg/Marker
...
uint8 ARROW=0
uint8 CUBE=1
uint8 SPHERE=2
...

# Header for timestamp and frame id.
std_msgs/Header header
...

[dirk-thomas]

Please consider to contribute a pull request for this feature idea.

[yossioo]

I'd be glad to do that, probably with some guidance, since I don't have much experience developing RQT plugins.

At this point, I don't have an elegant solution to propose but have some ideas.

Option A: Add another leaf node of type const .. to the tree, display value of the constant in name/type/path
Option B: Add a separate view (ListView / TableView / Tree?) below the MessagesTreeView, similar to Response in Service Caller, and populate it with constants from the requested message (or should sub-messages also be included?)