How to trigger a refresh of a dropdown list when the selection is changed

Question

Hi,This is a general ExtendScript question, but since I'm working with FM, I'll ask here first. I have a bit of a paradox here and I'm not sure of the best way to handle it.I have a dialog box with a dropdown list, where I want to refresh certain controls when the user changes the selection in the list (dropdownList.onChange). This includes refreshing the contents of the list itself. However, the problem is, as soon as I try to refresh the list contents, it triggers onChange again. So, if I put the call to refresh the box within the onChange handler, it results in an endless loop, because my refresher function triggers onChange when it refreshes the list.Does anyone know a better methodology, where I can safely trigger a refresh of a dropdown list within the list's own onChange event handler? I really wish that onChange was reserved for a user action only, or there was at least some property to that effect.Russ

Klaus Göbel · Accepted Answer

Hi Fabio,you can't "refresh" a dropdown menu.But you can rebuild it.You have to do it "manually".The way I do it:1. I have an array that I want to show in that dropdownlist.2. I remove all children: myList.removeAll();3 I rebuild the list via mylist.add("item","myArray[index] in a for - loop.But if you know the exact position of the items to remove or to add, you can do it via splice()

Fabs555 · Answer

Hi Russ, would it be possible if you could please tell me how did you do to make the dropdown refresh? A script of it would be super useful! thanks in advance!Fabio

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