Preventing selection event propagation

Our application has two tabs. On selecting the tabs we have to display
a confirmation window(dialog box). Depending on whether user clicks
"Yes" or "No" button in the confirmation window, the tab selection
event should proceed or stop.

I know we have event.stopPropagation() method for click event. However
there is no such method for selection event.

Is there any work around to stop the propagation of the selection
event. Any help is much appreciated.

Thanks in advance.

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