package
  {
      import fl.controls.Button;
      import fl.controls.Label;
      import fl.controls.RadioButton;
      import fl.controls.RadioButtonGroup;
      import flash.display.Sprite;
      import flash.events.MouseEvent;
      import flash.text.TextFieldAutoSize;
      
      public class @ax-actionscript-video-extra-radiobutton extends Sprite
      {
          private var j:uint;
          private var padding:uint = 10;
          private var currHeight:uint = 0;
          private var verticalSpacing:uint = 30;
  
          private var rbg:RadioButtonGroup;
          private var questionLabel:Label;
          private var answerLabel:Label;      
          private var question:String = "What day is known internationally as Speak Like A Pirate Day?"
          private var answers:Array = [ "August 12", "March 4", "September 19", "June 22" ];
          
          public function @ax-actionscript-video-extra-radiobutton() {
              setupQuiz();    
          }
          private function setupQuiz():void {
              setupQuestionLabel();
              setupRadioButtons();
              setupButton();
              setupAnswerLabel();
          }
          private function setupQuestionLabel():void {
              questionLabel = new Label();
              questionLabel.text = question;
              questionLabel.autoSize = TextFieldAutoSize.LEFT;
              questionLabel.move(padding, padding + currHeight);
              
              currHeight += verticalSpacing;
              addChild(questionLabel);
          }
          private function setupAnswerLabel():void {
              answerLabel = new Label();
              answerLabel.text = "";
              answerLabel.autoSize = TextFieldAutoSize.LEFT;
              answerLabel.move(padding + 120, padding + currHeight);
              
              addChild(answerLabel);          
          }
          private function setupRadioButtons():void {
              rbg = new RadioButtonGroup("question1");
              createRadioButton(answers[0], rbg);
              createRadioButton(answers[1], rbg);
              createRadioButton(answers[2], rbg);
              createRadioButton(answers[3], rbg);
          }
          private function setupButton():void {
              var b:Button = new Button();
              b.move(padding, padding + currHeight);
              b.label = "Check Answer";
              b.addEventListener(MouseEvent.CLICK, checkAnswer);
              
              addChild(b);
          }
          private function createRadioButton(rbLabel:String, rbg:RadioButtonGroup):void {
              var rb:RadioButton = new RadioButton();
              rb.group = rbg;
              rb.label = rbLabel;
              rb.move(padding, padding + currHeight);
              addChild(rb);
  
              currHeight += verticalSpacing;
          }
          private function checkAnswer(e:MouseEvent):void {
              if (rbg.selection == null) {
                  return;
              }
              var resultStr:String = (rbg.selection.label == answers[2]) ? "Correct" : "Incorrect";
              answerLabel.text = resultStr;
          }
      }
  }