JComboBox implementation we provide our own "patch". First of all it has correct preferred and minimum sizes that has sense when combo box is editable. Also this implementation fixes some bugs with clicking of default button. The SUN's combo box eats first "Enter" if the selected value from the list and changed it. They say that combo box "commit" changes and only second "Enter" clicks default button. This implementation clicks the default button immediately. As the result of our patch combo box has internal wrapper for ComboBoxEditor. It means that getEditor method always returns not the same value you set by setEditor method. Moreover adding and removing of action listeners isn't supported by the implementation of wrapper.
@author Vladimir Kondratyev
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