Catch event when a JTabbedPane tab is clicked (before actual state change)

Question

I know I can add a ChangeListener to detect when the tab changed, but I would like to do it before it changed. Here's my situation:

when my user tries to switch tab I do a validation some content on the current tab and the tab should switch only if the validation passes. If I use addChangeListener and switch it back upon validation failure (hoping that it happens fast enough that I won't see it) I will see the tab switched and then immediately switched back which looks stupid.

Something within JTabbedPane is responding to tab click for sure that triggers a state change, I just wonder if this functionality is exposed outside of the class. Either way, is there a good solution for this?

Thanks in advance

score 2 · Answer 1 · edited May 23 '17 at 10:33

2

Here is a nice approach to do validation before switching tabs by creating a custom VetoableSingleSelectionModel:

Forbid tab change in a JTabbedPane

edited May 23 '17 at 10:33

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answered Jan 18 '13 at 21:18

Freek de Bruijn

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Overriding `setSelectedIndex()` works. Thanks Freek. (Should've thought of this :) ) – user1861088 Jan 18 '13 at 22:18
@user1861088 spend tons of time but you suggestion really works .. thanks – Sumeet Vishwas May 10 '22 at 12:12

Catch event when a JTabbedPane tab is clicked (before actual state change)

1 Answers1