package ctz.util
{
	import flash.display.DisplayObject;
	import flash.display.DisplayObjectContainer;
	import flash.utils.*;

	import mx.collections.ArrayCollection;

	public final class FlexUtils
	{
		public function FlexUtils()
		{
			throw new Error('static methods only');
		}

		/**
		 * Create a Display Object and add some atts
		 */
		public static function createDisplayObject(typeName:Class, atts:Object=null):DisplayObject
		{
			try {
				var o:DisplayObject = new typeName();
				if (atts != null) {
					for (var k:String in atts) {
						if (o.hasOwnProperty(k)) {
							o[k] = atts[k];
						} else {
							typeName(o).setStyle(k, atts[k]);
						}
					}
				}
			} catch (e:Error) {
				trace('Error in FlexUtils.createDisplayObject: ' + e.message);
			}
			return o;
		}

		/**
		 * Given a root display object, get all children of the same type, recursively
		 */
		public static function getChildrenByType(collection:ArrayCollection, typeName:Class, rootObject:DisplayObjectContainer):void
		{
			var dobj:DisplayObject;
			for (var i:int = 0; i < rootObject.numChildren; i++) {
				dobj = rootObject.getChildAt(i);
				if (dobj is typeName)
					collection.addItem(dobj);
				if (dobj is DisplayObjectContainer)
					FlexUtils.getChildrenByType(collection, typeName, dobj as DisplayObjectContainer);
			}
		}

		public static function objDump(o:Object):String
		{
			var s:String = '';
			for (var key:String in o)
				s += key + ' => ' + o[key] + '\n';
			return s;
		}
	}
}