package {
    import flash.display.*;
    import flash.events.*;
    import flash.text.*;
  
    // A very simple checkbox widget
    public class @ax-actionscript-eventflow-checkbox-CheckBox extends Sprite {
      private var label:TextField;    // The checkbox's text label
      private var icon:@fileIcon;  // The checkbox's graphical icon
      private var checked:Boolean;    // Flag indicating whether the
                                      // checkbox is currently checked
      // Constructor
      public function @ax-actionscript-eventflow-checkbox-CheckBox (msg:String) {
        // When created, the checkbox is not checked
        checked = false;
        
        // Create the graphical icon
        icon = new @fileIcon();
        
        // Create the text label
        label = new TextField();
        label.text = msg;
        label.autoSize = TextFieldAutoSize.LEFT;
        label.selectable = false;
        
        // Position the text label next to the graphical icon
        label.x = icon.x + icon.width + 5;
  
        // Add the label and icon to this object as display children
        addChild(icon);
        addChild(label);      
  
        // Start listening for mouse click events dispatched to this object
        // or any of its children (i.e., the label or the icon)
        this.addEventListener(MouseEvent.CLICK, clickListener);
      }    
  
      // Handles to mouse click events
      private function clickListener (e:MouseEvent):void {
        if (checked) {
          icon.uncheck();
          checked = false;
        } else {
          icon.check();
          checked = true;
        }
      }
    }
  }