Actionscript 3 filter items out of combobox
So I have a combobox that should work as follows:
So I created a combobox like:
<s:ComboBox
id="cbox"
labelFunction="labels"
dataProvider="{objects}"
change="addFilter()"
restrict="a-zA-Z0-9-,_"
width="100%"
maxChars="32"
prompt="add filter"
/>
My issue stems from calling objects.refresh() , as it fails in the list.as file (AS library) at the line dataGroup.removeEventListener(FlexEvent.UPDATE_COMPLETE, updateCompleteListenerA); , where the dataGroup is null.
My filter function on the objects ArrayCollection is something like:
private function filterEcus(item:Object):Boolean {
for each (var i:Object in secondList) {
if (i.property == item.property) {
return true;
} else {
return false;
}
}
//should not reach this
return true;
}
I call the refresh at the end of the change handler.
There's a simpler solution for your problem. I just tested it. First you need to declare your comboboxes:
<s:ComboBox id="primaryCombobox" change="updateList(event)">
<s:ArrayList>
<fx:Object label="One"/>
<fx:Object label="Two"/>
<fx:Object label="Three"/>
<fx:Object label="Four"/>
</s:ArrayList>
</s:ComboBox>
<s:ComboBox id="secondaryCombobox">
<s:ArrayList>
<!-- You need to declare an empty data provider. -->
</s:ArrayList>
</s:ComboBox>
Then you use this function on the change handler:
private function updateList(event:IndexChangeEvent):void
{
secondaryCombobox.dataProvider.addItem(primaryCombobox.selectedItem);
primaryCombobox.dataProvider.removeItemAt(primaryCombobox.selectedIndex);
}