Mega Code Archive
Conditional handler
<![CDATA[
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Code from Flex 4 Documentation "Using Adobe Flex 4".
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<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
xmlns:mx="library://ns.adobe.com/flex/mx"
xmlns:s="library://ns.adobe.com/flex/spark"
initialize="initApp(event)">
<s:layout>
<s:VerticalLayout />
</s:layout>
<fx:Script>
import mx.controls.Alert;
private function initApp(e:Event):void {
cb1.addEventListener(MouseEvent.CLICK, handleCheckBoxChange);
b1.addEventListener(MouseEvent.CLICK, logAction);
}
private function handleCheckBoxChange(e:Event):void {
if (cb1.selected) {
b1.addEventListener(MouseEvent.CLICK, logAction);
ta1.text += "Added log listener." + "\n";
} else {
b1.removeEventListener(MouseEvent.CLICK, logAction);
ta1.text += "Removed log listener." + "\n";
}
}
private function performAction(e:Event):void {
Alert.show("You performed the action.");
}
private function logAction(e:Event):void {
ta1.text += "Action performed: " + e.type + ".\n";
}
</fx:Script>
<s:Button label="Perform Action" id="b1"
click="performAction(event)" />
<s:CheckBox id="cb1" label="Log?" selected="true" />
<s:TextArea id="ta1" height="200" width="300" />
</s:Application>
]]>