Warpův blog nejen o Flexu

package {
 
	// importy trid potrebnych pro beh programu
	import flash.display.MovieClip;
	import flash.display.Sprite;
	import flash.events.MouseEvent;
 
	public class ClassTest extends MovieClip {
 
		// promenna pro ulozeni odkazu (pointeru) na Flexovou aplikaci
		private var main;
 
		// graficke promenne
		private var circle:Sprite = new Sprite();
		private var square:Sprite = new Sprite();
 
		public function ClassTest():void {
			// konstruktor tridy
 
			// pomoci super() zavolame construktor extendovane tridy, tzn. defakto volame MovieClip();
			super();
 
		}
 
		public function getParentPointer(parentPointer):void {
 
			// ulozime si odkaz na hlavni movieclip
			main = parentPointer;
 
		}
 
		private function callParent(e:MouseEvent):void {
 
			// zavolame metodu na Flexu
			main.testMethod("Test String");
 
		}
 
		public function createSquare():String {
 
			// metoda, kterou lze volat z Flexu, jelikoz je public
 
			// kreslilme ctverec
			addChild(square);
			square.graphics.lineStyle(3,0x00ff00);
			square.graphics.beginFill(0x0000FF);
			square.graphics.drawRect(0,0,100,100);
			square.graphics.endFill();
			square.x = stage.stageWidth/2-square.width/2;
			square.y = stage.stageHeight / 2 - square.height / 2;
 
			// pridame listener pro zavolani callbacku do flexu
			square.addEventListener(MouseEvent.CLICK, callParent);
 
			// navratova hodnota
			return "Square Drawn";
 
		}
 
		private function createCircle():String {
 
			// metoda, kterou volat nelze, jelikoz je private
 
			addChild(circle);
			circle.graphics.lineStyle(3,0x00ff00);
			circle.graphics.beginFill(0x0000FF);
			circle.graphics.drawCircle(0,0,100);
			circle.graphics.endFill();
			circle.x = stage.stageWidth/2-circle.width/2;
			circle.y = stage.stageHeight/2-circle.height/2;
 
			return "Circle Drawn";
		}
 
	}
 
}

// ActionScript file
 
// importy
import flash.display.MovieClip;
import flash.events.*;
import mx.controls.Alert;
 
// definice promenne, ktera bude obsahovat odkaz na flash v podobe movieclipu
private var mc:MovieClip;
 
private function inicApp():void {
 
	// listener ktery zaruci, ze budeme volat funkce flashe az potom, co se cely nacte do pameti
	SWFMovie.addEventListener(Event.COMPLETE, registerSWF);
 
	trace("Loading Main SWF");
 
	// nacteme SWF
	SWFMovie.load("ClassTest.swf");
 
}
 
private function registerSWF(e:Event):void {
 
	trace("Registering Main SWF");
 
	// POZOR, toto je dulezite, zde vytvorime odkaz na obsah SWFLoaderu potom, co je nacteny a to pres konstruktor MovieClipu
	mc = MovieClip(SWFMovie.content);
 
	storeReferenceInChildSWF();
 
}
 
private function storeReferenceInChildSWF():void {
 
	// ulozime odkaz na instanci teto tridy do pameti vlozeneho swf, probiha to az pri runtime
	mc.getParentPointer(this);
 
	// a vyzkousime, jestli nam to funguje, povsimnete si, ze volame funkci primo z tridy flashe!
	var returnText:String = mc.createSquare();
 
	// ukazeme uspesne okenko
	Alert.show(returnText,"Result", mx.controls.Alert.OK);
 
}
 
public function testMethod(text:String):void {
 
	// reakce na zavolani medoty testmethod z flashe
	Alert.show("Metoda testMethod byla zavolana z flashe s parametrem:"+text,"Result", mx.controls.Alert.OK);
 
}