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  1. #1
    rainman3 is offline Member
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    Apr 2009
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    Default differentiate between user selection and "additem" method in combobox

    I'm trying to find a way for a JComboBox
    action listener or item listener to differentiate between
    the user making a selection and the invocation of methods
    such as removeAllItems() and addItem(). As far as I've
    been able to see, the ActionEvents and ItemEvents are
    exactly the same.

    I don't want actionperformed to be called in additem or removeallitems function.
    I want actionperformed to be called when only user change combobox items.
    How can I solve this problem?

  2. #2
    Fubarable's Avatar
    Fubarable is offline Moderator
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    Jun 2008
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    One way (not sure if it's the best, but it works) is to remove all listeners prior to calling removeAllItems or addItem, and then re-add the listeners after these jobs have been complete.

  3. #3
    OrangeDog's Avatar
    OrangeDog is offline Senior Member
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    Jan 2009
    Cambridge, UK
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    The ItemListener should only change if the selection changes, and not when adding/removing items.
    You should be able to work out what triggered an event by looking at the ActionEvent or ItemEvent objects.
    Don't forget to mark threads as [SOLVED] and give reps to helpful posts.
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