[jira] [Commented] (WICKET-5742) Facilitate the way to react upon model changes

["Tom Götz (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/WICKET-5742?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14193325#comment-14193325 ] 

Tom Götz commented on WICKET-5742:
----------------------------------

Sorry for double creating the ticket.

> Facilitate the way to react upon model changes
> ----------------------------------------------
>
>                 Key: WICKET-5742
>                 URL: https://issues.apache.org/jira/browse/WICKET-5742
>             Project: Wicket
>          Issue Type: Improvement
>          Components: wicket
>    Affects Versions: 6.17.0
>            Reporter: Tom Götz
>            Priority: Minor
>
> As already explained on the mailing list (http://markmail.org/thread/dpdejoiwzyiynfvq):
> I need a way to react upon model (object) changes to establish some "changelog" functionality. This is currently not possible in a consistent way, as e.g. CheckGroup updates the collection in-place before calling setObject (please see my posting for more in-depth explanation).
> Therefore I'd propose to establish a listener concept, where listeners are called in Component#modelChanging (handing the component to the listener) and Component#modelChanged. Currently this is only possible by subclassing everything, which is not very practical.
> I could find some time to implement this in the next couple of days I guess, if there is consense that this feature may be useful.



--
This message was sent by Atlassian JIRA
(v6.3.4#6332)