Comments on: Permanent ComboBox Prompt in Flex 2

By: Almog Kurtser

Almog Kurtser — Sun, 11 May 2008 18:16:52 +0000

Hi Jesse,
I was looking for something else regarding Flex’s ComboBox and somehow ended up here.

Anyway, you can use the selectedIndex and set it to -1 to show the prompt again.

Cheers,

Almog Kurtser

By: Nirth

Nirth — Tue, 16 Jan 2007 08:36:34 +0000

It seems I cannot post MXML easily, here is code
http://pastebin.mozilla.org/2871

By: Nirth

Nirth — Tue, 16 Jan 2007 08:34:27 +0000

I had similar problem, I've managed to solve it with PopUpButton short variant of code:

By: Ritesh Jariwala

Ritesh Jariwala — Sun, 14 Jan 2007 12:50:30 +0000

Hi Jesse

check this out. I tried to sort out.

http://www.actkid.com/2007/01/14/permanent-combobox-prompt-in-flex-2/

By: David Buhler

David Buhler — Sat, 13 Jan 2007 22:58:32 +0000

The Prompt is weird. Here’s my thinking:

Let’s say you have a user who is selecting a country from a drop down list. That user also has to select a region. Well, some ISO countries have no regions, like, for example, Aruba. So the prompt always has to be conditional based on the length of the dataprovider.

I think most people like myself are going crazy with the prompt. I use it as a default in a custom combobox subclass. In the view, I usually run some added logic for a second prompt if the drop down list may or may not have values. For example, if (country_cbo.dataProviders.length > 0 ? prompt = select region } else { prompt = no regions available for selection). Mind you, that’s seudo code. :)

What the combobox needs is an attribute that says, ‘isSelectedItemAPrompOfValues’ It’s long, but it’s specific. :)

Then, I can ensure that my users have interacted with my combobox ever after it has changed AND, I can be certain the combobox should be selected. I clearly can’t use selectedIndex > 0, and I most certainly can’t check the prompt of the box because it changes for usability and internationalization would be a nightmare.