package {
    import flash.events.*;
    import flash.display.*;
    import flash.text.*;
    import flash.net.*;
    
    // Creates the user interface for a question
    public class @ax-actionscript-misc-QuestionScreen extends Sprite {
      private var status:TextField;
      private var game:actionscript_misc_KidsGame;
      private var items:Array;
      private var thisQuestionItem:actionscript_misc_Item;
      
      // Constructor
      public function @ax-actionscript-misc-QuestionScreen (game:actionscript_misc_KidsGame, 
                                      items:Array, 
                                      thisQuestionItem:actionscript_misc_Item) {
        // Store a reference to the main game engine
        this.game = game;
        
        // Store question data
        this.items = items;
        this.thisQuestionItem = thisQuestionItem;
      
        // Put the question on screen
        makeQuestion();
      }
  
      // Creates and displays a question's interface
      public function makeQuestion ():void {
        // Display the graphic for the item
        var imgLoader:Loader = new Loader();
        addChild(imgLoader);
        imgLoader.load(new URLRequest(thisQuestionItem.src));
                    
        // Add a selection of clickable words for the player to choose
        // from. For the sake of simplicity, we'll display the name of every
        // item in the item set.
        var wordButton:WordButton;
        for (var i:int = 0; i < items.length; i++) {
          wordButton = new actionscript_misc_WordButton();
          wordButton.setButtonText(items[i].name);
                wordButton.setID(items[i].id);
          wordButton.y = 110 + i*(wordButton.height + 5);
          wordButton.addEventListener(MouseEvent.CLICK, clickListener);
          addChild(wordButton);
        }
                    
                    // Create a text field in which to display question status
        status = new TextField();
        status.autoSize = TextFieldAutoSize.LEFT;
        status.y = wordButton.y + wordButton.height + 10;
        status.selectable = false;
        addChild(status);
      }
  
      // Displays a message in the status field
      public function displayResult (msg:String):void {
        status.text = msg;
      }
      
      // Displays user input for this question  
      public function disable ():void {
        // Disables mouse events for all children of this Sprite.
        mouseChildren = false;
      }
      
      // Responds to the clicking of a word button
      private function clickListener (e:MouseEvent):void {
        // The player's guess is the item id associated with 
        // the WordButton object, as set in makeQuestion().
        game.submitGuess(e.target.getID());
      }
    }
  }