Cairngorm Code

package samples
{
    import com.adobe.cairngorm.task.ITaskGroup;
    import com.adobe.cairngorm.task.TaskEvent;

    import flash.display.Sprite;
    import flash.events.Event;
    import flash.events.ProgressEvent;
    import flash.events.TimerEvent;
    import flash.text.TextField;
    import flash.utils.Timer;

    import mx.events.FlexEvent;
    import mx.preloaders.IPreloaderDisplay;

    public class TaskFlowPreloader extends Sprite implements IPreloaderDisplay
    {
        private var labelText:TextField;

        public function TaskFlowPreloader()
        {
            super();
        }

        //------------------------------------------------------------------------
        //
        //  Implementation : IPreloaderDisplay
        //
        //------------------------------------------------------------------------

        // Define a Loader control to load the SWF file.

        // Specify the event listeners.
        public function set preloader(preloader:Sprite):void
        {
            // Listen for the relevant events
            preloader.addEventListener(ProgressEvent.PROGRESS, handleProgress);
            preloader.addEventListener(Event.COMPLETE, handleComplete);

            preloader.addEventListener(FlexEvent.INIT_PROGRESS, handleInitProgress);
            preloader.addEventListener(FlexEvent.INIT_COMPLETE, handleInitComplete);
        }

        // Initialize the Loader control in the override 
        // of IPreloaderDisplay.initialize().
        public function initialize():void
        {
            labelText = new TextField();
            labelText.scaleX = 5;
            labelText.scaleY = 5;
            labelText.width = 600;
            labelText.y = 330;
            labelText.x = 300;

            addChild(labelText);

            labelText.text = "Loading Flex Framework";

            addEventListener(Event.ENTER_FRAME, onEnterFrame);
        }

        private var counter:Number = 0;

        private function onEnterFrame(event:Event):void
        {
            counter += 0.09;

            graphics.clear();

            var angle:Number = counter;
            var color:Number = 0x000000;

            for (var i:uint = 0; i < 60; i++)
            {
                angle -= 0.03;
                color += 0x040404;
                graphics.lineStyle(1, color);
                graphics.moveTo(Math.cos(angle) * stageWidth + stageWidth / 2, Math.sin(angle) * stageHeight + stageHeight / 2);
                graphics.lineTo(Math.cos(angle + 10) * stageWidth + stageWidth / 2,
                                Math.sin(angle + 10) * stageHeight + stageHeight / 2);
            }
        }

        public function get backgroundColor():uint
        {
            return 0;
        }

        public function set backgroundColor(value:uint):void
        {
        }

        public function get backgroundAlpha():Number
        {
            return 0;
        }

        public function set backgroundAlpha(value:Number):void
        {
        }

        public function get backgroundImage():Object
        {
            return undefined;
        }

        public function set backgroundImage(value:Object):void
        {
        }

        public function get backgroundSize():String
        {
            return "";
        }

        public function set backgroundSize(value:String):void
        {
        }

        public function get stageWidth():Number
        {
            return _stageWidth;
        }

        private var _stageWidth:Number;

        public function set stageWidth(value:Number):void
        {

            _stageWidth = value;
        }

        private var _stageHeight:Number;

        public function get stageHeight():Number
        {
            return _stageHeight;
        }

        public function set stageHeight(value:Number):void
        {
            _stageHeight = value;
        }

        //------------------------------------------------------------------------
        //
        //  Event Handlers
        //
        //------------------------------------------------------------------------

        private function handleProgress(event:ProgressEvent):void
        {
        }

        private function handleComplete(event:Event):void
        {
        }

        private function handleInitProgress(event:Event):void
        {
        }

        private function handleInitComplete(event:Event):void
        {
            var taskgroup:ITaskGroup = new ExampleTasks();
			taskgroup.addEventListener(TaskEvent.CHILD_START, onChildStart);
			taskgroup.addEventListener(TaskEvent.TASK_PROGRESS, onTaskProgress);
			taskgroup.addEventListener(TaskEvent.TASK_COMPLETE, onTaskComplete);
			taskgroup.start();
        }

        private function onChildStart(event:TaskEvent):void
        {
            labelText.text = event.task.label ? event.task.label : "";
        }

        private function onTaskProgress(event:TaskEvent):void
        {
        }

        private function onTaskComplete(event:TaskEvent):void
        {
            dispatchEvent(new Event(Event.COMPLETE));
        }
    }
}