<?xml version="1.0" encoding="utf-8"?>
<!-- http://blog.flexexamples.com/2008/06/24/detecting-a-double-click-on-a-textinput-control-in-flex/ -->
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
        layout="vertical"
        verticalAlign="middle"
        backgroundColor="white" viewSourceURL="srcview/index.html">

    <mx:Script>
        <![CDATA[
            private function textInput_doubleClick(evt:MouseEvent):void {
                var ti:TextInput = evt.currentTarget as TextInput;
                ti.enabled = !ti.enabled;
                ti.editable = ti.enabled;
            }
        ]]>
    </mx:Script>

    <mx:TextInput id="textInput1"
            text="The quick brown fox jumped over the lazy dog"
            doubleClickEnabled="true"
            doubleClick="textInput_doubleClick(event);" />

    <mx:TextInput id="textInput2"
            text="The quick brown fox jumped over the lazy dog"
            doubleClickEnabled="true"
            doubleClick="textInput_doubleClick(event);" />

</mx:Application>