Squiggly/ane/Examples/Flex/TextEditor/src/TextEditor.mxml

<?xml version="1.0" encoding="utf-8"?>
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<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="vertical" applicationComplete="init()" horizontalAlign="left">
<mx:Script>
	<![CDATA[

		import com.adobe.linguistics.spelling.*;
		import mx.controls.textClasses.TextRange;
		
		private var _newdict:HunspellDictionary = new HunspellDictionary();
		private var sp:SpellChecker;
		private function init():void {
			_newdict.addEventListener(Event.COMPLETE, handleLoadComplete);
			_newdict.load("dictionaries/en_US/en_US.aff", "dictionaries/en_US/en_US.dic");
		}
		private function handleLoadComplete(evt:Event):void
		{
			sp = new SpellChecker(_newdict);
		}

		private function checkText():void {
			var wordPattern:RegExp =/\b\w+\b/; // match next word...
			var inputValue:String = inputText.text;
			var offset:int, curPos:int;
			for ( ; ; ) {
				var res:Array = inputValue.match( wordPattern); // lookup word by word....
				if ( res == null ) break;
				if ( !sp.checkWord(res[0]) ) {
					offset = inputText.text.length-inputValue.length;
					curPos = inputValue.indexOf(res[0]);
					var currentRange:TextRange = new TextRange(inputText, false, offset+ curPos, offset+ curPos+res[0].length); // mark mispelled word.
					currentRange.color = "red";
				}
				inputValue = inputValue.substr(inputValue.indexOf(res[0])+ res[0].length);
			}
		}
		
	]]>
</mx:Script>
	<mx:HBox>
		<mx:Button id="check" label="Check Text" click="checkText()"  />
	</mx:HBox>
	<mx:TextArea id="inputText" height="100%" width="100%"/>	
</mx:Application>