What Listener to Choose ?

Question

Hello,
My situation is as follows:
I have implemented two InputVerifiers, which tracks whether a valid(not negative, integer, not empty...) number was entered into several text fields.
Whenever there is an invalid value a warning message displays. That is correct.
My problem is:
Concerning the situation described above. If there are not valid values in my text fields and I want to close the window ("Close" button).
However instead of closing the window, a warning message displays, that the "text field value is invalid". This is not correct. I want to close the window, no matter what values are in the text fields.
My idea:
I thought it would be possible to add some listener to the "Close" button, which would set the inputVerifiers of the text fields to null and then, at some other point in the code I would set it back.
I tried ChangeListener(), however this approach worked pretty strangely for me (Closing the window was OK, but then the warning messages stopped to be displayed at some moment).
Anybody has any advice for this??
Thank you very much and wish you a luxurious day:)
Adam

Answer 1

Hi Adam,
You don't need another listener, you could just check if the window should be closed and then call Frame.dispose().
The InputVerifier method that does the validity check could look like this:
public void checkInput(/* some parameters*/){
   String input = textField.getText();
   boolean invalidInput = true;
   /*Input validation*/
   if (invalidInput){
       if (closeWindowCondition){
             window.dispose();
             return;
       //the window should remain open, just display an error message
       JOptionPane.showMessageDialog(window, "error message", "title");
}If I understood you correctly that should do it.