CODEWITHSUNDEEP
apache-flexactionscript-3combobox
invertedSpear
invertedSpear

Reputation: 11054

Is it possible to catch a comboBoxes value before change with a change event

I am displaying a combo box in something of a WYSIWYG preview. I want the user to be able to click on the combo box and see the options inside, but I don't want them to be able to change the value. I tried using preventDefault() on the change event but it doesn't work. I don't want to disable it because I do want the user to be able to "look inside" the dropdown.

So I'm trying to block the change, but can't. My next resort is to change the selected index back to what it was before the change, Is there any way to do this within the scope of a ListEvent.CHANGE event listener?

Current Workaround is to basically re-assign the controls selected item the same way I am defining the selected item when I originally build it (a default selection). So a user sees their change then it immediately changes back to the default selection.

Upvotes: 1

Views: 1091

Answers (1)

Ryan Guill
Ryan Guill

Reputation: 13906

Are you sure that a combobox is what you want? could you do the same thing with a list component that is not selectable?

update:

If you must use a combobox and you dont want the lag from listening for the event and resetting the control, I see two possible options. You could subclass the control and make your own. When you do, hijack any methods that set the value besides the initial selection.

Or, you could try something like this: http://wmcai.blog.163.com/blog/static/4802420088945053961/. The site seems like it is in another language but the code is still there. It will allow you to make your options disabled, so the user cannot choose one of the other options.

HTH

Upvotes: 1

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