snippet.txt

// CustomEvent.as 
package com.utils {
    import flash.events.Event;
   
    public class CustomEvent extends Event {
       
        // event constants
        public static const EVENT_NAME:String = "eventName";
				public static const OTHER_EVENT:String = "otherEvent";
        
        public function CustomEvent($type:String, $bubbles:Boolean = false, $cancelable:Boolean = false) {
            super($type, $bubbles, $cancelable);
        }
        
        // Adobe recommend overriding this
        public override function clone():Event {
            return new CustomEvent(type, this.params, bubbles, cancelable);
        }
    }
}

// Usage:

// ## Main.as

import com.utils.CustomEvent;

public function fired_event(e:CustomEvent) {
	trace("Event fired from child");
}

cropper_box.addEventListener(CustomEvent.EVENT_NAME, fired_event);

// ## CropperBox.as

import com.utils.CustomEvent;

dispatchEvent(new CustomEvent(CustomEvent.EVENT_NAME));



/* ----- If this doesn't work ----- */



// Central.as
package com.utils {
	import flash.events.*;
	
	public class Central {
		protected static var disp:EventDispatcher;
		
		// event constants
    public static const EVENT_NAME:String = "eventName";
		public static const OTHER_EVENT:String = "otherEvent";
		
		public static function dispatchEvent(p_event:Event):void {
			if (disp == null) { return; }
			disp.dispatchEvent(p_event);
		}
		
		public static function addEventListener(p_type:String, p_listener:Function, p_useCapture:Boolean=false, p_priority:int=0, p_useWeakReference:Boolean=false):void {
			if (disp == null) { disp = new EventDispatcher(); }
			disp.addEventListener(p_type, p_listener, p_useCapture, p_priority, p_useWeakReference);
		}
		public static function removeEventListener(p_type:String, p_listener:Function, p_useCapture:Boolean=false):void {
			if (disp == null) { return; }
			disp.removeEventListener(p_type, p_listener, p_useCapture);
		}
		
	}
}

// Usage:

// ## Main.as

import com.utils.Central;

public function fired_event(e:Event) {
	trace("Event fired from child");
}

Central.addEventListener(Central.EVENT_NAME, fired_event);

// ## CropperBox.as

import com.utils.Central;

dispatchEvent(new Event(Central.EVENT_NAME));



/* or maybe a combo of them both */