package {
    import flash.display.*;
    import flash.events.*;
    import flash.text.*;  
  
    // A product icon that can be placed in a ShoppingBasket object using
    // ShoppingBasket.add@ax-actionscript-eventflow-customevent-Product(). In this simplified version, the icon is
    // simply a text field with no corresponding graphical icon.
    public class @ax-actionscript-eventflow-customevent-Product extends Sprite {
      // An event constant for the custom PRODUCT_SELECTED event
      public static const PRODUCT_SELECTED:String = "PRODUCT_SELECTED";
      // The on-screen label showing the product's name
      private var label:TextField;
      // The product's name
      private var productName:String;
      
      // Constructor
      public function @ax-actionscript-eventflow-customevent-Product (productName:String) {
        // Store the product's name
        this.productName = productName;
        
        // Create the on-screen label
        label = new TextField();
        label.text = productName;
        label.autoSize = TextFieldAutoSize.LEFT;
        label.border     = true;
        label.background = true;
        label.selectable = false;
        addChild(label);
  
        // Start listening for mouse clicks. By registering for 
        // MouseEvent.CLICK events with this object, we'll receive 
        // notification any time its children (e.g., the label) are clicked.
        addEventListener(MouseEvent.CLICK, clickListener);
      }
  
      // Returns the product's name
      public function getName ():String {
        return productName;
      }
  
      // Handles MouseEvent.CLICK events. In this example, simply clicking a 
      // product selects it, and causes the @ax-actionscript-eventflow-customevent-Product.PRODUCT_SELECTED event to
      // be dispatched. In a more complete implementation, other factors
      // might be involved. For example, products might be selectable
      // via the keyboard, and selection might be disabled during a
      // transaction with the server.
      private function clickListener (e:MouseEvent):void {
        // Notify all registered listeners that this product was selected.
        // Thanks to ActionScript's hierarchical event dispatch system,
        // by dispatching a custom event targeted at this object, we trigger 
        // not only this object's @ax-actionscript-eventflow-customevent-Product.PRODUCT_SELECTED listeners, but also
        // @ax-actionscript-eventflow-customevent-Product.PRODUCT_SELECTED listeners registered with the 
        // ShoppingBasket instance.
        dispatchEvent(new Event(@ax-actionscript-eventflow-customevent-Product.PRODUCT_SELECTED, true));
      }
    }
  }