[Springframework-rcp-dev] [Spring-JIRA] Commented: (RCP-618) ShuttleList will fire change events on setup

[Peter K. (JIRA) <no...@sp...>]

    [ https://jira.springsource.org/browse/RCP-618?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=47829#action_47829 ] 

Peter Karich commented on RCP-618:
----------------------------------

Ah, further (a lot ;-)) investigation shows that ShuttleList wasn't able to show entities with a duplicate name. 

In my case I had Person->Course and one person had two Courses which had the same name, but where different.
Only one of the Course was listed.

Now the problem was (and is?) is following:
1. initial set will change my other component due to an explicit propertylistener
2. now a PropertyChangeListener will fire again a changeevent, because of ShuttleList.setSelectedIndices and so my component also only shows one!

Another performance problem could be that on every setSelectedIndicies the method JList.setSelectedIndices will be called and trigger N*changeevents.
E.g. if there are 10 Courses for one person it will trigger the first event with one course, a second event with 2 courses and so on.

> ShuttleList will fire change events on setup
> --------------------------------------------
>
>                 Key: RCP-618
>                 URL: https://jira.springsource.org/browse/RCP-618
>             Project: Spring Rich Client Project
>          Issue Type: Bug
>          Components: Sandbox
>    Affects Versions: 1.1.0
>            Reporter: Peter Karich
>            Assignee: Lieven Doclo
>
> Is the following bug already fixed: 
> http://forum.springsource.org/showthread.php?t=18733 ("I see some dirtiness issues.")
> ?
> This happens to me too. I am filling the shuttlelists' with initial 'selected' values and it will fire a lot of ListSelectionEvent's
> although this should not happen on the initial set-up, I think.
> see org.springframework.richclient.form.binding.swing.ShuttleListBinding -> ListSelectedValueMediator

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