how to find out if the (text) contents of a label widget spans multiple lines?

[joster]

Hello-

I have several Label widgets, some of which have long (long) text.
Text which are long (say beyond 4-5 words) is getting broken into
multiple lines.

Given a Label widget, how can I find out if its contents (text
associated with the Label widget) spans multiple lines?

Thanks.

Joster

[mP]

Label.getText.

The fact the words are broken over one or more lines doesnt matter.
The lot is inside the div span that is the Label widget.

[joster]

Hi-

Thanks. I am able to get the text inside a label.

For my specific case, I do need to find out if the words inside a
label are broken over one more more line - as i need to align labels
horizontally in a vertical panel.

Joster

[mP]

You cant without a lot of pain and anguish.

[joster]

I guess, I am ready to take the pain - can you outline the steps for
how I might go about doing this?

See picture about the mis-alignment issue here:
http://groups.google.com/group/Google-Web-Toolkit/attach/21188d34aaa85f51/dualtree.png?part=4&view=1

[Reinier Zwitserloot]

Basically, you use getClientWidth and getClientHeight (which are DOM.*
methods though there might be something 'better', DOM.* is pretty low
level and comes with no guarantees that it works on all browsers so
you best have a godo testing regime!). These methods tell you how
large any given element is. However, there are a metric arseload of
caveats, which is where the pain that mP described comes from.

1. Browsers don't exactly show a paragon of cooperation on this one.
Whether the sizes you get include borders and all that jazz is
certainly something you'll need to test.

2. A newly created DOM element doesn't really have any properties set
right. You'll need to add it to something which is added (to something
which is added to * infinity) which is added to the RootPanel somehow,
AND you need to 'wait a while' for this DOM element to really really
'become'. Usually a DeferredCommand will do the trick. This does mean
you'll need to do all your layouting, then in a deferredcommand check
the sizes, and if they aren't what you expected, do it all over again.
Tricky.

3. This works properly only on block-layouted elements. If you don't
know what it means, you better read up, but oversimplifying: spans, a
href, and other text-like tags are 'inline' displayed, whereas divs,
p, table, and other somewhat 'bigger' stuff is block layouted. Every
raw GWT widget is block layout, even label (which is a <div> under the
hood, and divs are default block layouted). You can change the
layouting using the CSS display: block;. This one is relevant mostly
if you're using a lot of HTML or HTMLPanel widgets.

On Sep 27, 12:00 am, joster <joster.j...@gmail.com> wrote:
> I guess, I am ready to take the pain - can you outline the steps for
> how I might go about doing this?
>

> See picture about the mis-alignment issue here:http://groups.google.com/group/Google-Web-Toolkit/attach/21188d34aaa8...

[joster]

Thanks mP and Reinier. I did solve my problem by using getClientWidth
and getClientHight to align labels.

Great!

Joster