trace を swf 上に。

/**
 * Copyright mezumona ( http://wonderfl.net/user/mezumona )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/dPJl
 */

package {
    import flash.display.Sprite;
    import flash.display.DisplayObjectContainer;
    import flash.text.TextField;
    import flash.text.TextFieldAutoSize;

    public class FlashTest extends Sprite
    {
        public function FlashTest()
        {
            initializeTrace(this);
            trace("trace 代わり。");
        }

        private var tf_:TextField = new TextField();
        public function trace(...rest):void
        {
            tf_.appendText(rest.join(" ") + "\n");
        }

        public function initializeTrace(target:DisplayObjectContainer):void
        {
            tf_.autoSize = TextFieldAutoSize.LEFT;
            target.addChild(tf_);
        }

    }
}