[Accordion] Summary secondary action

[PLSFIX]

• I have searched the issues of this repository and believe that this is not a duplicate.

Expected Behavior

The same as ListItemSecondaryAction

Current Behavior

No (simple) ability to implement a secondary action

Context

Some quick-access-like actions from expansion panel's head.

Your Environment

Tech	Version
Material-UI	v1.0.0-beta.30
React	16

[oliviertassinari]

@PLSFIX We can reproduce this existing pattern:
https://github.com/mui-org/material-ui/blob/5831fe531d6b2256d65085400170ccf79fdd93cf/src/Table/TablePagination.js#L134-L141

An alternative is to have a renderActions() property.
I'm curious. Why is the children property not enough?

[PLSFIX]

@oliviertassinari well, after some time i figured out how to implement this. Had to use e.stopPropagation() on child interactive element, therefore children property is enough.
On the other hand, we have Lists with it's ListItemSecondaryAction pattern, and I thought it could be more convenient to use the same pattern here, making it more standardized. By the way the same technique can be applied on Lists to.
Anyway, If you don't think the same way about it then this issue can be closed, thank you.

[oliviertassinari]

@PLSFIX The ListItemSecondaryAction pattern sounds good too.

[eps1lon]

Closing in favor of the more active #9427.