DropDown: Change event fires twice

[Jones]

Hi,
i'm developing dynamic forms with AEM Forms Designer (6.5.0.20190320.3.935878).
I noticed, that change events on dropdown lists fire twice when changing a value.
This doesn't happen in Acrobat.
Could you tell me, what's going wrong here?
And if possible, any idea on scripting to prevent this.[attachment=0]simpleDropdown.pdf[/attachment]

Attached is a simple pdf with only one dropdown list, where this happens.

regards
jones

[Tracker Supp-Stefan]

Hello Jones,

This is an XFA form - so I can't see the full JS besides that field in the Editor.
Please check if you can on your side when this event is set to file - and try to only fire it on e.g. the "willCommit" event. It should then only show up once.

And I will ask our devs to take a look in your sample.

Kind regards,
Stefan

[Jones]

Hi Stefan,
thanks for your quick reply.
The provided PDF was created from scratch. Just the drowdown list incl values added.
No other JS code than the app.alert(this.name + ": change event fires"); in the change event of
the dropdown list inside.
Unfortunately i need JS code inside change events in other dynamic forms.
E.g. users have to confirm the change, as this will change occurence of parts of the form and also
delete/change data.
So using events like willCommit isn't an option.

regards
jones

[Tracker Supp-Stefan]

Hello Jones,

Thanks for the additional details!
I've asked a colleague from the dev team working on JS to take a look - and he has already confirmed he will do that.

In the mean time you can try to see if this works (as a workaround):

Code: Select all

if(event.willCommit){
  app.alert(this.name + ": change event fires"); 
}

This should make it so that this alert is only fired once.

Kind regards,
Stefan

[Jones]

Hi,

as far as i know, willCommit is a method/property of AcroForms.
As I'm working with AEM Forms Designer, this isn't available for me.
Please correct me, if I'm wrong.

regards
jones

[Tracker Supp-Stefan]

Hello Jones,

It might indeed be different - XFA forms are quite more complex, and unfortunately the documentation for them is not public ('thanks' Adobe) - so our devs are kind of reverse engineering support for such XFA forms, but I myself have a much more limited access to what is available in them. I hope I will have some further feedback from our dev team for you shortly!

Kind regards,
Stefan