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adrianc1982's avatar
adrianc1982
Visitor
9 years ago

Labellist count()?

Im doing some coding around jumpToItem in Labellist and want to go to the last element in the list.

Example:
lastItem = myList.count() - 1
myList.jumpToItem = lastItem




Usually i did a count on roList and subtracted one position and that was my last element. Is there something similar in LabelList? Do i have to count manually when doing the contentnode which will populate the labellist and keep a variable with that information or can i directly count the contentnode? Thanks.
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5 Replies

  • adrianc1982's avatar
    adrianc1982
    Visitor
    9 years ago
    "joetesta" wrote:
    https://sdkdocs.roku.com/display/sdkdoc/LabelList
    Maybe you figured this out already?
    use getChildCount() on the list.
    So in the example from the LabelList page, you should be able to do something like

    mylist = m.top.findnode("moviemenucontent")
    count = mylist.getChildCount()


    I havent figured it out, i will give it a try tonight and post my results. I also checked the sdk page for labelist and no, getchildcount() is not there, so maybe it should be added. thank you a lot for your kind response.
  • EnTerr's avatar
    EnTerr
    Roku Guru
    9 years ago
    "adrianc1982" wrote:
    I havent figured it out, i will give it a try tonight and post my results. I also checked the sdk page for labelist and no, getchildcount() is not there, so maybe it should be added. thank you a lot for your kind response.

    getChildCount() comes from https://sdkdocs.roku.com/display/sdkdoc ... deChildren - which every Node supports.

    All UI nodes are subclasses of Group, which is a subclass of Node, also known as roSgNode. The closest thing to a class diagram for RSG i have seen is actually... another question, https://forums.roku.com/viewtopic.php?f=34&t=95613 . Looking at that - only partial! - sketch, LabelList can do everything that ArrayGrid, Group and Node can do.

    Using getChildCount() would be a bit of a hack, since it will count any direct children of LabelList - but as long as you haven't added extra dough there, it should do the job.
  • adrianc1982's avatar
    adrianc1982
    Visitor
    9 years ago
    "EnTerr" wrote:
    "adrianc1982" wrote:
    I havent figured it out, i will give it a try tonight and post my results. I also checked the sdk page for labelist and no, getchildcount() is not there, so maybe it should be added. thank you a lot for your kind response.

    getChildCount() comes from https://sdkdocs.roku.com/display/sdkdoc ... deChildren - which every Node supports.

    All UI nodes are subclasses of Group, which is a subclass of Node, also known as roSgNode. The closest thing to a class diagram for RSG i have seen is actually... another question, https://forums.roku.com/viewtopic.php?f=34&t=95613 . Looking at that - only partial! - sketch, LabelList can do everything that ArrayGrid, Group and Node can do.

    Using getChildCount() would be a bit of a hack, since it will count any direct children of LabelList - but as long as you haven't added extra dough there, it should do the job.

    I did work, its a hack because its not a count over labellist its a count of children from the content node. However it works and im happy thank you for your kind answers
  • joetesta's avatar
    joetesta
    Roku Guru
    9 years ago
    It's a count of child nodes (or sections) of the list content node itself. IMO It's not a hack because this list node will only ever have the correct number of contentnodes as its children. Although if one is using sections then you may want to get the counts from the section nodes.