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
>
>
>
