Mega Code Archive
Using change event to recognize that a new item was entered into the prompt, and adds it to the data provider
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Code from Flex 4 Documentation "Using Adobe Flex 4".
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<!-- dpcontrols\spark\SparkCBAddItem.mxml -->
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:s="library://ns.adobe.com/flex/spark"
xmlns:mx="library://ns.adobe.com/flex/mx">
<s:layout>
<s:VerticalLayout paddingTop="5" paddingLeft="5" />
</s:layout>
<fx:Script>
import spark.events.IndexChangeEvent;
// Event handler to determine if the selected item is new.
protected function myCB_changeHandler(event:IndexChangeEvent):void
{
// Determine if the index specifies a new data item.
if(myCB.selectedIndex == spark.components.ComboBox.CUSTOM_SELECTED_ITEM)
// Add the new item to the data provider.
myCB.dataProvider.addItem(myCB.selectedItem);
}
</fx:Script>
<s:Label text="The selected index is: {myCB.selectedIndex}" />
<s:Label text="The selected item is: {myCB.selectedItem}" />
<s:ComboBox id="myCB" width="140" change="myCB_changeHandler(event);">
<s:dataProvider>
<mx:ArrayList>
<fx:String>Red</fx:String>
<fx:String>Orange</fx:String>
<fx:String>Yellow</fx:String>
<fx:String>Blue</fx:String>
<fx:String>Green</fx:String>
</mx:ArrayList>
</s:dataProvider>
</s:ComboBox>
</s:Application>
]]>