This is my code:
public class LimitedTextArea extends TextArea {
private static const MAX_LINES:int = 10;
private var storedInput:String;
private var limitHit:Boolean = false;
public function LimitedTextArea(){
this.addEventListener( KeyboardEvent.KEY_UP, keyUpHandler );
this.addEventListener( KeyboardEvent.KEY_DOWN, keyDownHandler );
this.addEventListener( Event.CHANGE, changeHandler );
}
//--------------------------------------------------
// EVENT LISTENERS
//--------------------------------------------------
protected override function keyDownHandler(event:KeyboardEvent):void {
storedInput = this.text;
var tf:TextField = TextField( this.textField );
if( tf.numLines > MAX_LINES )
limitHit = true;
}
protected override function keyUpHandler(event:KeyboardEvent):void {
if( limitHit ){
this.text = storedInput;
limitHit = false;
}
}
private function changeHandler( event:Event ):void {
if( limitHit ){
this.text = storedInput;
limitHit = false;
}
}
//--------------------------------------------------
}
If I just keep entering down and typing stuff in, it works and stops
me from typing more... the problem is when I try to go back and edit
what I have typed, the limit has been hit (10 lines)... I am not sure
how to allow deleting or editing as long as it still does not go
longer than allowed...
Any ideas? ( I tried what you said Alex, but I couldn't get it to work
properly )
