import flash.text.TextField;
 import flash.events.TextEvent;

 var tf:TextField = new TextField();
 tf.htmlText = "<a href='event:myEvent'>Click Me.</a>";
 tf.addEventListener("link", clickHandler);
 addChild(tf);

 function clickHandler(e:TextEvent):void {
  trace(e.type); // link
  trace(e.text); // myEvent
 }
 

package {
    import flash.display.Sprite;
    import flash.events.TextEvent;
    import flash.errors.IOError;
    import flash.events.IOErrorEvent;
    import flash.system.Capabilities;
    import flash.net.navigateToURL;
    import flash.net.URLRequest;
    import flash.text.TextField;
    import flash.text.TextFieldAutoSize;
    import flash.display.Shape;
    import flash.display.Graphics;

    public class TextEvent_LINKExample extends Sprite {
        private  var myCircle:Shape = new Shape();

        public function TextEvent_LINKExample() {
            var myTextField:TextField = new TextField();
            myTextField.autoSize = TextFieldAutoSize.LEFT;
            myTextField.multiline = true;
            myTextField.background = true;
            myTextField.htmlText = "Draw a circle with the radius of <u><a href=\"event:20\">20 pixels</a></u>.<br>"
                         +  "Draw a circle with the radius of <u><a href=\"event:50\">50 pixels</a></u>.<br><br>"
                         +  "<u><a href=\"event:os\">Learn about your operating system.</a></u><br>";

            myTextField.addEventListener(TextEvent.LINK, linkHandler);

            this.addChild(myTextField);
            this.addChild(myCircle);
        }

        private function linkHandler(e:TextEvent):void {
            var osString:String = Capabilities.os;

            if(e.text == "os") {

                if (osString.search(/Windows/) != -1 ){
                    navigateToURL(new URLRequest("http://www.microsoft.com/"), "_self");
                }else if (osString.search(/Mac/) != -1 ) {
                    navigateToURL(new URLRequest("http://www.apple.com/"), "_self");
                } else if (osString.search(/linux/i)!= -1) {
                    navigateToURL(new URLRequest("http://www.tldp.org/"), "_self");
                }

            } else {
                myCircle.graphics.clear();
                myCircle.graphics.beginFill(0xFF0000);
                myCircle.graphics.drawCircle(100, 150, Number(e.text));
                myCircle.graphics.endFill();
            }
        }
    }
}

package {
    import flash.display.Sprite;
    import flash.text.TextField;
    import flash.text.TextFieldType;
    import flash.text.TextFieldAutoSize;
    import flash.events.TextEvent;

    public class TextEvent_TEXT_INPUTExample extends Sprite {
        private var instructionTextField:TextField = new TextField();
        private var inputTextField:TextField = new TextField();
        private var warningTextField:TextField = new TextField();
        private var result:String = "";

        public function TextEvent_TEXT_INPUTExample() {
            instructionTextField.x = 10;
            instructionTextField.y = 10;
            instructionTextField.background = true;
            instructionTextField.autoSize = TextFieldAutoSize.LEFT;
            instructionTextField.text = "Please enter a value in the format A#AA#AA,\n"
                                        + "where 'A' represents a letter and '#' represents a number.\n" +
                                        "(Note that once you input a character you can't change it.)" ;

            inputTextField.x = 10;
            inputTextField.y = 70;
            inputTextField.height = 20;
            inputTextField.width = 75;
            inputTextField.background = true;
            inputTextField.border = true;
            inputTextField.type = TextFieldType.INPUT;

            warningTextField.x = 10;
            warningTextField.y = 100;
            warningTextField.autoSize = TextFieldAutoSize.LEFT;

            inputTextField.addEventListener(TextEvent.TEXT_INPUT, textInputHandler);

            this.addChild(instructionTextField);
            this.addChild(inputTextField);
            this.addChild(warningTextField);
        }

        private function textInputHandler(event:TextEvent):void {
            var charExp:RegExp = /[a-zA-z]/;
            var numExp:RegExp = /[0-9]/;

            event.preventDefault();

            inputTextField.text = result;
            inputTextField.setSelection(result.length + 1, result.length + 1);

            if (inputTextField.text.length == 1 || inputTextField.text.length == 4) {

                if(numExp.test(event.text) == true) {
                    updateCombination(event.text);
                } else {
                    warningTextField.text = "You need a single digit number.";
                }

            }else {

                if(charExp.test(event.text) == true) {
                    updateCombination(event.text);
                } else {
                    warningTextField.text = "You need an alphabet character.";
                }
            }

            if(inputTextField.text.length == 7) {
                inputTextField.type = TextFieldType.DYNAMIC;
                instructionTextField.text = "CONGRATULATIONS. You've done.";
            }
        }

        private function updateCombination(s:String):void {
                    warningTextField.text = "";
                    result += s;
                    inputTextField.text = result;
                    inputTextField.setSelection(result.length + 1, result.length + 1);
        }
    }
}