正規表現エディタ

/**
 * Copyright famibee2 ( http://wonderfl.net/user/famibee2 )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/i6uF
 */

package {
  import flash.display.Sprite;
  import flash.text.TextField;
  import flash.text.TextFieldType;
  import flash.text.TextFormat;
  import flash.events.Event;

  public class Main extends Sprite {
    private const tfExp:TextField = new TextField();
    private const tfrepl:TextField = new TextField();
    private const tfInp:TextField = new TextField();
    private const tfOut:TextField = new TextField();

    public function Main() {
      tfExp.x = 20;
      tfExp.y = 0;
      tfExp.width = stage.stageWidth - tfExp.x*2;
      tfExp.height = 24;
      tfExp.border = true;
      tfExp.background = true;
      tfExp.backgroundColor = 0xFFcccc;
      tfExp.defaultTextFormat = new TextFormat(null, 24);
      tfExp.type = TextFieldType.INPUT;
      tfExp.text = "l+";
      tfExp.addEventListener(Event.CHANGE, chg);
      addChild(tfExp);

      tfrepl.x = tfExp.x;
      tfrepl.y = tfExp.y +tfExp.height;
      tfrepl.width = tfExp.width;
      tfrepl.height = tfExp.height;
      tfrepl.border = true;
      tfrepl.background = true;
      tfrepl.backgroundColor = 0xccccFF;
      tfrepl.defaultTextFormat = new TextFormat(null, 24);
      tfrepl.type = TextFieldType.INPUT;
      tfrepl.text = "<font color='#ff0000'><u>$&</u></font>";
      tfrepl.addEventListener(Event.CHANGE, chg);
      addChild(tfrepl);

      tfInp.x = tfExp.x;
      tfInp.y = tfrepl.y + tfrepl.height;
      tfInp.width = stage.stageWidth - (tfExp.x *2);
      tfInp.height = (stage.stageHeight - tfInp.y)/2;
      tfInp.multiline = true;
      tfInp.wordWrap = true;
      tfInp.border = true;
      tfInp.background = true;
      tfInp.backgroundColor = 0xccFFcc;
      tfInp.defaultTextFormat = new TextFormat(null, 24);
      tfInp.type = TextFieldType.INPUT;
      tfInp.text = "Hello 'World'!\rcall";
      tfInp.addEventListener(Event.CHANGE, chg);
      addChild(tfInp);

      tfOut.width = tfInp.width;
      tfOut.height = tfInp.height;
      tfOut.x = tfExp.x;
      tfOut.y = tfInp.y + tfInp.height;
      tfOut.multiline = true;
      tfOut.wordWrap = true;
      tfOut.border = true;
      tfOut.background = true;
      tfInp.backgroundColor = 0xeeeeee;
      tfOut.defaultTextFormat = new TextFormat(null, 24);
      tfOut.text = "Hello 'World'!";
      addChild(tfOut);

      tfExp.dispatchEvent(new Event(Event.CHANGE));
    }

    private function chg(e:Event):void {
      const reg:RegExp = new RegExp(tfExp.text, "gx");
      tfOut.htmlText = tfInp.text.replace(reg, tfrepl.text);
    }
  }
}