Hi,
How would I get a drop downlist to populate with check boxes. I am porting a c# project to flex, and I would like to imitate the functionality of their checkbox drop list.
Anyone got any idea how I would go about this.
Please and thank you.
A:
you could extend the popup-button and add custom item renderer for the items in the dropdown.
http://www.adobe.com/livedocs/flex/2/langref/mx/controls/PopUpButton.html
Adrian Pirvulescu
2010-10-12 10:57:27
Do you by any chance have an example of the code required to do this.And to return the selected items?
Craig Mc
2010-10-12 11:07:54
The above is specific to the halo PopUpButton. The original question refers to the spark DropDownList component. I would recommend looking at the docs for the latter instead.
Wade Mueller
2010-10-12 21:14:35
@Wade yes! you are right. in spark you need DropDownList. @Craig Please check the itemRenderer examples for lists and see how stuff is done in there. I am sorry I do not have an example of it
Adrian Pirvulescu
2010-10-13 06:16:32
Hi what I did in the end was I simply used a combolist with itemrendere set to the checkbox control this worked :)
Craig Mc
2010-10-14 12:36:29
There is an addendum to this problem, I cant actually click the check boxes.. the moment one does the dropdownlist closes.
Craig Mc
2010-10-20 13:25:39
http://www.blastanova.com/blog/2010/06/23/a-custom-multi-selection-spark-dropdownlist/ <= found this however I am strugling to see how to get the final array of selected checkboxes back out of it.
Craig Mc
2010-10-21 13:50:09
1. for combobox selection. you should have a "selected" inside the object data you pass to the combobox, and assign the selected property as checkbox.selected property. 2. for the problem with autocosing when clicking a checkbox, you should be able to prevent closing of the checkbox by overriding the checkbox class.
Adrian Pirvulescu
2010-10-22 05:57:41
+1
A:
Typically you do this by creating a custom ItemRenderer and assigning it to your DropDownList. Here's an example of creating/applying a custom ItemRenderer in a DropDownList:
Hope that helps.
Wade Mueller
2010-10-12 21:12:29
I just specified mx.controls.checkbox as the renderer that worked great thanks :)
Craig Mc
2010-10-14 13:15:05