Flash / Flex / ActionScript/TextField/Event

Add change event to TextField

   <source lang="java">

package {

 import flash.display.*;
 import flash.events.*;
 import flash.text.*;
 public class Main extends Sprite {
   private var inputfield:TextField = new TextField(  );
   public function Main() {
     inputfield.text = "";
     inputfield.width  = 150;
     inputfield.height = 30;
     inputfield.border     = true;
     inputfield.background = true;
     inputfield.type = TextFieldType.INPUT;
     addChild(inputfield);
     inputfield.addEventListener(Event.CHANGE, changeListener);
   }
   private function changeListener (e:Event):void {
     trace("event");
   }
 }

}

       </source>
   
  

Synchronizing two TextField objects

   <source lang="java">

package {

 import flash.display.*;
 import flash.events.*;
 import flash.text.*;
 public class Main extends Sprite {
   private static const defaultTitle:String ="[No selection]";
   private static const defaultPhotoName:String ="Enter Here";
   private var title:TextField = new TextField(  );
   private var photoname:TextField = new TextField(  );
   public function Main (  ) {
     title.text = defaultTitle;
     title.width  = 350;
     title.height = 25;
     title.border     = true;
     title.background = true;
     title.selectable = false;
     addChild(title);
     photoname.text = defaultPhotoName;
     photoname.width  = 150;
     photoname.height = 30;
     photoname.x = 100;
     photoname.y = 150;
     photoname.border     = true;
     photoname.background = true;
     photoname.type = TextFieldType.INPUT
     addChild(photoname);

     photoname.addEventListener(Event.CHANGE, changeListener);
     photoname.addEventListener(FocusEvent.FOCUS_IN, photoFocusInListener);
     photoname.addEventListener(FocusEvent.FOCUS_OUT,
                                photoFocusOutListener);
     stage.addEventListener(FocusEvent.FOCUS_OUT, panelFocusOutListener);
   }
   private function changeListener (e:Event):void {
     if (photoname.text.length == 0) {
       title.text = "Unnamed Photo]";
     } else {
       title.text = "[" + photoname.text + "]";
     }
   }
   private function photoFocusInListener (e:FocusEvent):void {
     if (photoname.text == defaultPhotoName) {
       photoname.text = "";
       title.text = "Photo Viewer [Unnamed Photo]";
     } else {
       title.text = "Photo Viewer [" + photoname.text + "]";
     }
   }
   private function photoFocusOutListener (e:FocusEvent):void {
     if (photoname.text.length == 0) {
       photoname.text = defaultPhotoName;
     }
   }
   private function panelFocusOutListener (e:FocusEvent):void {
     if (e.relatedObject == null) {
       title.text = defaultTitle;
     }
   }
 }

}

       </source>