flagiq.as

Flex做的一个小测验程序

/**
* FlaqIQ simple application
* @author mteguh
* @version 0.1
*/

package cap.flagiq {
	import mx.rpc.http.HTTPService;
	import mx.rpc.events.ResultEvent;
	import mx.rpc.events.FaultEvent;
	
	import mx.collections.ArrayCollection;
	import mx.utils.ArrayUtil;
	
	public class FlagIQ
	{
		private var service:HTTPService;
		
		[Bindable]
		public var flag_image:String;
		
		[Bindable]
		public var choice1:String;
		
		[Bindable]
		public var choice2:String;
		
		[Bindable]
		public var choice3:String;
		
		[Bindable]
		public var choice4:String;
		
		private var answer:String;
		
		private var currQuestionId:Number;
		private var totalQuestions:Number;
		
		[Bindable]
		public var resultsXML:XML;
		
		function FlagIQ(url:String)
		{
			service = new HTTPService();
			service.resultFormat = "e4x";
			service.url = url;
			service.addEventListener(ResultEvent.RESULT, resultHandler);
			service.addEventListener(FaultEvent.FAULT, faultHandler);
			service.send();
		}
		
		private function faultHandler(evt:FaultEvent):void
		{
				// failed
		}
		
		private function resultHandler(evt:ResultEvent):void
		{			
			//Use this for e4x
			resultsXML = evt.result as XML;

			totalQuestions = resultsXML.question.length();
			
			nextQuestion();
		}
		
		public function nextQuestion():void {			
			if (isNaN(currQuestionId)) {
				currQuestionId = 0;
			} else {
				currQuestionId += 1;
			}
			
			flag_image = resultsXML.question[currQuestionId].flag_image;
			choice1 = resultsXML.question[currQuestionId].choice1;
			choice2 = resultsXML.question[currQuestionId].choice2;
			choice3 = resultsXML.question[currQuestionId].choice3;
			choice4 = resultsXML.question[currQuestionId].choice4;
		}
		
		public function isQuestionAvailable():Boolean {
			var b:Boolean = (currQuestionId == (totalQuestions - 1))? false : true;
			return b;
		}
		
		public function saveAnswer(str:String):void {
			resultsXML.question[currQuestionId].selectedAnswer = str;
		}
	}
}