Hmm. What prompted that? My blog has this post: http://blogs.adobe.com/aharui/2008/03/custom_ilists_combobox_prompts.html
Most of my posts I hope are like pre-mixed dough. It gets you most or all of the way there, I think. From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Tim Hoff Sent: Tuesday, November 04, 2008 1:00 AM To: flexcoders@yahoogroups.com Subject: [flexcoders] Re: adding (none) option to comboboxes Just subclass. With all humble respect, most developers do not have the time, and sometimes the ability, to extend the framework quickly to meet simple requirements like this. I say this only to point out the different perspectives between a flex framework engineer and an average or beginner flex developer. Sure, the power of flex is that you can always roll your own; when necessary. All for that!!! The problem though, is that this may be too much to ask from a developer with a deadline. Before flex, I came from the Microsoft camp. I absolutely appreciate the freedom that flex affords, to extend the framework and/or create components from scratch. But, the built-in properties and styles that flex offers is not quite as comprehensive as what I was previously used to. That being said, I'd love to see the best of both worlds in the next generation of! flex. I guess it boils down to the budget and scope of each release of flex. Of course, the framework can't account for every possible use-case. However, there are quite a few common functions and styles, that could be considered to be included. I've had to do something like "all" or "none" many times with a ComboBox. For a cleanly coded application, I'd much rather just be able to set a property, like prompt (but more like reset), instead of adding a sub classed control or hacking a solution through the dataProvider. Just .02 and a pseudo rant. :) -TH --- In flexcoders@yahoogroups.com, Alex Harui <[EMAIL PROTECTED]> wrote: > > An example of such on my blog > > From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Tim > Hoff > Sent: Monday, November 03, 2008 2:08 PM > To: flexcoders@yahoogroups.com > Subject: [flexcoders] Re: adding (none) option to comboboxes > > > Hi Derrick, > > The ComboBox prompt will not solve your problem here. It only appears > when the selectedIndex==-1; Unless you want to subclass ComboBox, > you're going to have to add "none" to the dataProvider, and implement > custom logic to account for it. Since you're using the same > dataProvider elsewhere, I suggest that you use the object utility copy > function, to make a deep copy of the collection; to be used for the> ComboBox > with "none" added. > > -TH > > --- In flexcoders@yahoogroups.com<mailto:flexcoders%40yahoogroups.com>, > "Derrick Anderson" > no.way.this.is.in.use@ wrote: > > > > nevermind, i discovered the 'prompt' property :) > > > > On Mon, Nov 3, 2008 at 3:04 PM, Derrick Anderson < > > no.way.this.is.in.use@ wrote: > > > > > hi, i know this is probably a simple question- but what's the best > way of > > > adding a (none) label to a combobox. i have a setter for the > dataprovider > > > where I add an option for (None) in the list, but I don't actually > want it > > > in the dataprovider if that makes sense. Basically, I want (None) to > always > > > be a selectable item in comboboxes, but I don't actually want to put > that > > > option in the arraycoll! ection combobox dataprovider. here is the > setter for> & gt; > the combobox dataprovider > > > > > > public function set segmentList(list:ArrayCollection):void > > > { > > > _segmentList = list; > > > var item:DataSegmentVO = new DataSegmentVO(); > > > item.dataSegmentID = 0; > > > item.dataSegmentName = '(None)'; > > > > > > if(_segmentList[0].dataSegmentID != 0) > > > _segmentList.addItemAt(item,0); > > > > > > > > > dispatchEvent(new Event("segmentsChanged")); > > > } > > > > > > the problem is that same segmentList arraycollection is used in the > place I > > > manage segments, and it puts a (none) option in there and it doesn't > make > > > sense there. > > > > > > thanks, > > > derrick anderson > > > >! ; > >
