If I understand you correctly, here’s
the difference between your examples…
In your example where you set the
vPosition from a Button:
private function setLogVPosition():void
{
txtLog.vPosition =
txtLog.maxVPosition;
}
…the text in the text area was
already set and fully drawn prior to setting the scroll position . All you are
doing here is setting the vPosition on the text that is currently (and already)
loaded into the textArea.. so there’s no problem.
In your other example, you were first changing
the text of the textArea, and on the next line you set the vPosition. In this
case, by the time you set the vPosition, the textArea had not fully updated
with it’s new text.
So, by calling validateNow() in between changing
the textArea contents and setting the vPosition, you are telling the textArea
to perform any necessary property updates, including redrawing if need be. So
then by the time you set the vPosition, the textArea is ready to go.
Let me know if that doesn’t clear
things up.
-Mac
From: flexcoders@yahoogroups.com [mailto:flexcoders@yahoogroups.com] On Behalf Of Gordon Smith
Sent: Thursday, February 09, 2006
6:37 PM
To: flexcoders@yahoogroups.com
Subject: RE: [flexcoders] Flex 2.0
beta TextArea question
Sorry, I'm not following you.
If you can be more explicit about what did
and didn't work (i.e., what's in the body of the
function, and how you
call it), I can probably explain what's going on.
- Gordon
-----Original Message-----
From: flexcoders@yahoogroups.com
[mailto:flexcoders@yahoogroups.com]
On
Behalf Of Jonas Windey
Sent: Thursday, February 09, 2006 1:26 AM
To: flexcoders@yahoogroups.com
Subject: RE: [flexcoders] Flex 2.0 beta TextArea
question
Thanks, validateNow() did the trick.
Still weird though that calling the same function
from a button did the
event, but from code didn't work. Probably because
all client-events
trigger
the validateNow() function automatically?
-----Original Message-----
From: flexcoders@yahoogroups.com
[mailto:flexcoders@yahoogroups.com]
On
Behalf Of Gordon Smith
Sent: donderdag 9 februari 2006 8:29
To: flexcoders@yahoogroups.com
Subject: RE: [flexcoders] Flex 2.0 beta TextArea
question
There should be no need for callLater() or a
Timer. These are
workarounds from Flex 1.X that we want to banish
in Flex 2.
Mac Martine wrote:
> I believe you will find a detailed answer in
the thread
> from Feb 1 with > the Subject:
> [flexcoders] Scrolling a TextArea to the
bottom?
This thread explained that setting a property like
the 'text' of a
TextArea does not immediately update other
properties such as
maxVPosition; by default this happens latter, for
performance reasons.
However, you can force all properties to update
immediately by calling
validateNow() on a UIComponent. So if you set the
text, call
validateNow(), and then set the vPosition to the
maxVPosition, it should
scroll to the bottom.
If there are problem with making this work, please
file bugs.
- Gordon
-----Original Message-----
From: flexcoders@yahoogroups.com
[mailto:flexcoders@yahoogroups.com]
On
Behalf Of Manish Jethani
Sent: Wednesday, February 08, 2006 12:10 PM
To: flexcoders@yahoogroups.com
Subject: Re: [flexcoders] Flex 2.0 beta TextArea
question
On 2/8/06, Manish Jethani
<[EMAIL PROTECTED]> wrote:
> Okay, the problem is that the TextArea's
maxVPosition is 0 even after
> the text is set. The new value of maxVPosition
is calculated only on
> the next screen update.
..... and the solution for now is to use
callLater() or a timer or
something.
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