LookupField same field selection trigger

Support
#1

Hi supporters, maintainers, contributors,

About LookupField, is there possibly a way that could trigger the event when the user selects the same field (same value) of the lookupfield?
And if it exists one, could I have example code?

Thank you!

#2

I think this little example will help.

MyLookUpField.addValueChangeListener( lookUpEvent -> { 
      if (lookUpEvent.getValue().equals(lookUpEvent.getPrevValue())) {
//Do something
}
});
#3

Hi Andrey,

My problem is the addValueChangeListener method does NOT catch the event when the user selects a field multiple times.

An example:
My lookupField has 3 values: “Num1”, “Num2”, “Num2”. The “Num1” is the default one so it’ll be always selected at the first opening. So, when the user re-select the “Num1”, addValueChangeListener could not handle the event.

#4

Yes, in this scenario, the listener will not fire. :frowning:
I’m not sure it can be traced.

#6

Hi,

ValueChangeEvent is fired only then the value changed, so no way to track the selection of the same value again.

Regards,
Gleb

#8

Ok, I’ll find another way.
Thank you!

#9

I found a simple solution for this case.
We can use PopupButton instead and set the actions for it.

Check out the example:
https://doc.cuba-platform.com/manual-latest/gui_PopupButton.html