You found a bug! We've classified it as EXTGWT-2721 . We encourage you to continue the discussion and to find an acceptable workaround while we work on a permanent fix.
  1. #1
    Sencha User
    Join Date
    Dec 2012
    Vote Rating
    Cartman_o_O is on a distinguished road


    Default Adding same widget twice to TabPanel bug

    Adding same widget twice to TabPanel bug

    Required Information

    Version(s) of Ext GWT

    Browser versions and OS
    (and desktop environment, if applicable)
    Firefox 17, Windows 7

    Virtual Machine

    Additional tab appears. Clicking on it causes IndexOutOfBoundsException be thrown.

    Run mode
    Development mode

    Steps to reproduce the problem
    Start running in development mode in Eclipse
    Open app in browser
    Click the tab number 3

    Expected result
    There should be only 1 tab.

    Actual result
    An exception appears in the development mode console.

    Test case
    public void onModuleLoad() {
    final TabPanel advanced = new TabPanel();
    Label l2=new Label("2");
    advanced.add(l2,new TabItemConfig("2",true));
    advanced.add(l2,new TabItemConfig("3",true));
    Viewport viewport = new Viewport();

    Helpful Information

    Screenshot or video
    «Link to attachment»

    Live test
    «http://… Address for a test case for this bug on a running server»

    Debugging already done

    Possible fix
    «Not provided»

  2. #2
    Sencha - GXT Dev Team
    Join Date
    Feb 2009
    Vote Rating
    Colin Alworth is a glorious beacon of light Colin Alworth is a glorious beacon of light Colin Alworth is a glorious beacon of light Colin Alworth is a glorious beacon of light Colin Alworth is a glorious beacon of light



    Thanks for the report - I've confirmed this issue, and will update this post when we have a fix committed.

    Interestingly, invoking l2.removeFromParent() does not fix this, but advanced.remove(l2) does. This is probably the best workaround for now, to explicitly remove the child from the previous parent.

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