I think it's nearly the the same issue that I dicussed in message
91764 "Number of lines in <mx:text/>".
But I didn't get an answer yet.
Markus
--- In flexcoders@yahoogroups.com, "Daniel Freiman" <[EMAIL PROTECTED]> wrote:
>
> It looks like the force update method you need for TextArea is
> validateProperties(). I forget if you're going to need to do more
to get
> the internal textField to update. We'll cross the bridge later if
we need
> to.
>
> - Dan Freiman
>
> On 10/28/07, jamalwally <[EMAIL PROTECTED]> wrote:
> >
> > Hi,
> >
> > I can't get the correct information about line numbers in the text of
> > a custom class that extends TextArea (call it MyTextArea).
> >
> > If I set the text property of the TextArea in onCreationComplete()
> > then getLineIndexAtPoint() returns -1.
> >
> > I imagine that after I update the text property, I must wait for the
> > display to update before getLineIndexAtPoint() will return anything
> > other than -1. So my questions are:
> >
> > 1. Can you force the display to update immediately?
> > e.g.
> > this.text = "a new line of text";
> > // this will return -1 (not what I want)
> > trace(this.textField.getLineIndexAtPoint(2));
> >
> > forceUpdate();
> >
> > // this will return 0 (good)
> > trace(this.textField.getLineIndexAtPoint(2));
> >
> > 2. If you cannot force an update, is there an event to
> > listen for so that I know when the getLineIndexAtPoint()
> > method will return useful information?
> >
> > Here is my example code that does not give me what I want:
> >
> > public class MyTextArea extends TextArea {
> > public function MyTextArea() {
> > super();
> > // wait for creationComplete otherwise this.textField = null
> > addEventListener(FlexEvent.CREATION_COMPLETE, onCreationComplete);
> > }
> >
> > private function onCreationComplete(evt:FlexEvent):void {
> > this.text = 'a long line of text \n with a line break ...';
> >
> > // these both return -1
> > // but I want them to return "0" and "1", repectively
> > // because char 1 is on line 1 and char 25 is on line 2
> > trace(this.textField.getLineIndexOfChar(1));
> > trace(this.textField.getLineIndexOfChar(25));
> > }
> >
> > }
> >
> > (by the way, in my application, I unfortunately don't have the option
> > of setting this.text in the constructor).
> >
> > Thanks in advance for your help,
> > James
> >
> >
> >
>
