I am calling JComboBox.setEnabled(false) and JComboBox is disabled. On clicking one of the buttons in the frame, I am calling JComboBox.showPopup(). I expect JComboBox not to show the popup since it is disabled. But JcomboBoc shows the popup and the user is able to select the items from the drop-down. Selection of any item triggers ActionEvent. I feel this is incorrect. JComboBox.setPopupVisible() must check whether the component is enabled or not before showing the Popup.

This is reproducible atleast since 1.4 on all platforms. Reproducible on Mustang-b28 also.

I have attached a sample test. Execute the sample test. You would see a JFrame with a JcomboBox and a button. Make sure JComboBox is disabled. Click on the button. You would see a popup. Try selecting an item from the popup. You would see an ActionEvent being triggered in the console.
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