I have a TileList:
<mx:Label id="label1" text="{albumsThumbnailList.selectedIndex}" />
<mx:Label id="label2"
text="{presentations.currentPresentation.presentedAlbumIndex}" />
<mx:TileList id="albumsThumbnailList" backgroundAlpha="0"
useRollOver="false" initialize="mySizeBinding(event);"
dataProvider="{presentations.currentPresentation.presentedAlbums}"
itemRenderer="PresentationAlbumRenderer"
selectedIndex="{presentations.currentPresentation.presentedAlbumIndex}"
change="albumChangeHandler()" />
public function test():void {
_includedAlbums.removeItemAt(1);
dispatchEvent(new Event("albumToggledEvent"));
presentedAlbumIndex--;
}
BEFORE test():
label1 == 5
label2 == 5
AFTER test():
label1 == 5
label2 == 4
Problem is, when the 5th index is currently selected and I delete an
item earlier in the list (like index 2), the data provider updates the
list. But the selectedIndex doesn't get updated. (See test()
function.) I noticed when I comment out the removeItemAt line, the
index gets updated just fine.
How do I update the data provider and index in the same operation and
get the TileList to bind correctly? Can I perhaps subclass TileList and
override a function? Some other way?
I tried looking into the internals of ListBase, inspecting
selectedIndex, and generally browsing around at runtime. I noticed that
selectedIndex does get set to 4 momentarily. Then it gets set right
back to 5 again. I'm guessing it may have to do with the
updateDisplayList or something like that.
