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Java Forum / GUI / August 2005What to override inJComboBox
I need a class that extends JComboBox, but with slightly different behaviour. I want to intercept mouse click on an item in the list, do some processing, and sometimes prevent the item to be treated as selected. I think it could be done by overriding some JComboBox method but don't know which one(s). I have tried with custom renderers, editors, listmodels, but no success. Can anyone give me a clue ? > I need a class that extends JComboBox, but with slightly different > behaviour. I want to intercept mouse click on an item in the list, [quoted text clipped - 3 lines] > renderers, editors, listmodels, but no success. Can anyone give me > a clue ? What about just the MouseListener stuff?  Signaturemonique Ask smart questions, get good answers: http://www.catb.org/~esr/faqs/smart-questions.html >>I need a class that extends JComboBox, but with slightly different >>behaviour. I want to intercept mouse click on an item in the list, [quoted text clipped - 5 lines] > > What about just the MouseListener stuff? And what about JComboBox.addItemListener? ItemListener has an itemStateChanged method, which is invoked when an item has been selected/deselected. Signature"Thomas:Fritsch$ops:de".replace(':','.').replace('$','@') Yes, I tried with my own Listener, and it cought the click. But I couldn't deactivate(remove) other Listeners so the Popup disappeared, and I want to make it visible, until my processing allows it to hide. To change the question, how can I prevent the popup component to hide ? Default behavior reacts to the very first click on an item in the list, the item is selected and the popup hides. I want to make the popup visible after the item is selected, and hide it only if I want it to. Naturally, I want it to hide automatically if the focus is moved elsewhere. Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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