is jsPDF required flash player

[Bhumika Thaker]

I want to generate pdf at client side so I want achieve this using jspdf 

.

when I create sample , it is working fine in chrome but not in Mozilla and 
ie 10. I have one doubt that is this required flash player to generate pdf?

My system does not having flash player. if it required flash player, it is 
not usefull me. is there any other way to produce pdf using client script?

Thanks in advance.

-- 
You received this message because you are subscribed to the Google Groups 
"Google Web Toolkit" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to google-web-toolkit+unsubscr...@googlegroups.com.
To post to this group, send email to google-web-toolkit@googlegroups.com.
Visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
For more options, visit https://groups.google.com/groups/opt_out.

Re: Apache ProxyPass does not return errors, only 500 (Internal Server Error)

[Gregor Kovač]

I'm using 
RequestHeader edit X-GWT-Module-Base ^(http)://([^/]+)/(.*)$ 
$1://$2/babyCenter/$3

and it works. :) Thanks a lot.

Dne petek, 19. april 2013 23:39:19 UTC+2 je oseba Thomas Broyer napisala:
>
>
>
> On Friday, April 19, 2013 9:20:49 AM UTC+2, Gregor Kovač wrote:
>>
>> I have two ProxyPass directives:
>>
>> ProxyPass /client/ http://10.0.0.8:8080/client/
>> RequestHeader edit X-GWT-Module-Base ^(.*)/client/(.*)$ 
>> $1/client/$2
>> ProxyPass / http://10.0.0.8:8080/client/
>> RequestHeader edit X-GWT-Module-Base ^(.*)/(.*)$ $1/client/$2
>>
>> 10.0.0.8 is running Glassfish on port 8080 and 
>> http://10.0.0.8:8080/client/ is URL to a GWT based application. Both 
>> proxy's work OK ,except when it comes to an error on the Glassfish side. If 
>> I go via /cllient/ proxy then I see the actual error that was produced on 
>> the Glassfish side. If I go via / proxy then I only see "Error 500 The call 
>> failed on the server, please see server log". I've tried 
>> settingProxyErrorOverride 
>> Off, but it didn't help.
>>
>> Why don't I see the error via / proxy? I think that the X-GWT-Module-Base 
>> header gets edited wrong. This apache configuration is done by 
>> https://code.google.com/p/google-web-toolkit/issues/detail?id=4817#c4
>>
>
> Assuming X-GWT-Module-Base contains http://myserver/foo/bar, there's no 
> reason it wouldn't be rewritten as http:/client//myserver/foo/bar, 
> http://client/myserver/foo/bar or http://myserver/foo/client/bar instead 
> of the http://myserver/client/foo/bar you're expecting.
> You have to rework your regexp. Maybe mapping something like 
> ^(https?)://([^/]+)/(.*)$ to $1://$2/client/$3
>

-- 
You received this message because you are subscribed to the Google Groups 
"Google Web Toolkit" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to google-web-toolkit+unsubscr...@googlegroups.com.
To post to this group, send email to google-web-toolkit@googlegroups.com.
Visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
For more options, visit https://groups.google.com/groups/opt_out.

Re: As Window.confirm()

[junaidp]

one workaround could be , 
the next execution which you want after the click of the YES, put the part 
of the code inside a method ... and call that method with the press of the 
YES in side your popup (i.e inside a clickHandler of YES button)...


On Friday, 19 December 2008 17:38:22 UTC+5, obesga wrote:
>
> Just to know, I expected that 
>
> Thaks 
>
> On 18 dic, 16:32, "Isaac Truett"  wrote: 
> > No, you can't do that. Why fight the asynchronous tide? 
> > 
> > On Thu, Dec 18, 2008 at 10:07 AM, obesga  wrote: 
> > 
> > > Hello ! 
> > 
> > > I want to ask if there's a method to 
> > 
> > > Window.confirm() stops the execution until the user press YES/NO 
> > > buttton. 
> > > I'm wondering if there's a way to code a DialogBox that acts the same 
> > > way on code, without using listeners on the DialogBox caller code. 
> > 
> > > Window.confirm(); // 'Thread' stops here 
> > > GWT.log("I'll wait until user press a button",null); 
> > 
> > > MyDialogBox.confim(); // 'Theard' will not stop here, can it be donde 
> > > GWT.log("How can I act as the code above ?",null); 
> > 
> > > anyone has tried to make this 
> > 
> > > Oskar

-- 
You received this message because you are subscribed to the Google Groups 
"Google Web Toolkit" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to google-web-toolkit+unsubscr...@googlegroups.com.
To post to this group, send email to google-web-toolkit@googlegroups.com.
Visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
For more options, visit https://groups.google.com/groups/opt_out.

I want to use Apache Commons on the server, but the code is using the packages in gwt-dev.jar.

[Patrick Tucker]

Once on the server the jars in a directory are loaded in alphabetic order if 
not specified otherwise.  You can try renaming the jar to make it come first.

-- 
You received this message because you are subscribed to the Google Groups 
"Google Web Toolkit" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to google-web-toolkit+unsubscr...@googlegroups.com.
To post to this group, send email to google-web-toolkit@googlegroups.com.
Visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
For more options, visit https://groups.google.com/groups/opt_out.

Seek suggestions on layout technique

[brec]

In ASCII-art, this is what I want to achieve:

Relatively higher on the page, three images like this:

   
> || ||
> || ||
> || || ++
>     ++
>
> and, lower on the page, three like this:
>
>     ++
> || || ++
> || ||
> || ||
>     
>
>   ^
>   |
>   |
>  page horiz.
>  centerline
>

--where each of the four larger rectangles represents a playing card image, 
and each of the the two smaller "+"-built rectangles represents a much 
smaller image. The ASCII-art is likely to be a bit off unless your font 
metrics match my text editors'; I've attached a small screen shot portion 
that's much better than the ASCII and that's a sample of the lower set of 
three images. Note that the page horizontal centerline should run between 
the two adjacent playing cards.

I now have this UiBinder layout for the lower images (the higher ones are 
the same except swap the strings "top" and "bottom"):


> 
> 
>  
>  addStyleNames='{style.top}' />
> 
> 
>

where the CSS is:

/* The following two classes are derived from */
> /* http://stackoverflow.com/a/10797328/1121892 */
>
> /* Child of this element is class="centered" */
> .centerer {
> text-align: center;/* horizontally */
> }
>
> /* Parent of this element is class="centerer" */
> .centered {
> display: inline-block;
> }
>
> .top {
> position: absolute;
> top: 0;
> width: 100%;
> }
>

The problem is positioning the smaller "dealer" images. In Firefox 20 they 
display as intended, but in OmniWeb (Safari-like), Chrome, and IE 10 they  
displace horizontally from the intended position to overlay the left corner 
of one of the larger rectangles (different larger rectangle in different 
browsers).

Currently my app uses only one overall HTMLPanel and all my layout within 
is by HTML/CSS. This is my first GWT project and I think maybe it's time I 
started using panels for layout but I don't know exactly how to handle this 
case to achieve browser-independence, if that is possible.

-- 
You received this message because you are subscribed to the Google Groups 
"Google Web Toolkit" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to google-web-toolkit+unsubscr...@googlegroups.com.
To post to this group, send email to google-web-toolkit@googlegroups.com.
Visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
For more options, visit https://groups.google.com/groups/opt_out.


<>

Re: Found interface com.google.gwt.user.client.Element, but class was expected

[törzsmókus]

For the record (and those who will come to this thread):
This error occurs when you (try to) hotswap (i.e. change while debugging) 
code that is using the Element class.
This is a known quirk, probably it’s the JVM being not smart enough to 
handle the hotswap.
See the issue tracker: 
https://code.google.com/p/google-web-toolkit/issues/detail?id=5252#c6
--
A

On Tuesday, May 25, 2010 1:19:45 PM UTC+2, mmoossen wrote:
>
> Hi Brian! 
>
> no, sorry, we do not use any generation, injection or what so ever 
> tools in our project. 
> and as said, there is actually no big problem for us, it occurrs from 
> time to time, so we just refresh and that is... 
> i hope you can fix your problem. and if so please post about it. i 
> still would really like to know what the problem might be. 
>
> Michael 
>
> On May 24, 6:48 pm, Brian Reilly  wrote: 
> > The causes of our problems are probably different, but I just started 
> > seeing this when trying to use JRebel on my GWT project. It seems to 
> > only happen after JRebel has reloaded a class AND I refresh the 
> > browser. Do you have anything in your environment that gets involved 
> > in class lifecycles? I haven't solved my problem yet, but maybe we can 
> > find something in common between our problems. 
> > 
> > -Brian 
> > 
> > On May 19, 5:06 am, mmoossen  wrote: 
> > 
> > 
> > 
> > > Dear all! 
> > 
> > > I am getting following error message: 
> > > "Found interface com.google.gwt.user.client.Element, but class was 
> > > expected" 
> > 
> > > when doing something like: 
> > > myWidget.getElement().getStyle().setOpacity(0); 
> > 
> > > where myWidget has been just attached to the doc a few LoC before. 
> > 
> > > it is not reproducible, it seems that it happens only in DevMode but 
> > > not even always... 
> > 
> > > what does the error message mean? 
> > 
> > > thanks 
> > > Michael
>
 

-- 
You received this message because you are subscribed to the Google Groups 
"Google Web Toolkit" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to google-web-toolkit+unsubscr...@googlegroups.com.
To post to this group, send email to google-web-toolkit@googlegroups.com.
Visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
For more options, visit https://groups.google.com/groups/opt_out.

Determining if user is using a tablet

[bvt]

Does anybody have any advice on how to determine whether somebody is using 
a tablet to access my GWT application? If I understand 
https://code.google.com/p/google-web-toolkit/issues/detail?id=4911 correctly, 
it would appear that GWT 2.5.1 supports only CSS2 media queries, which 
don't seem particularly useful in this regard. I'd like to adjust spacing 
of items to make selection easier for tablet users, but compact items on 
small screens.

-- 
You received this message because you are subscribed to the Google Groups 
"Google Web Toolkit" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to google-web-toolkit+unsubscr...@googlegroups.com.
To post to this group, send email to google-web-toolkit@googlegroups.com.
Visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
For more options, visit https://groups.google.com/groups/opt_out.

Re: Re-deployment on appengine sometimes breaks GWT app (Module.Cache.html not found)

[Robert Hoffmann]

Today it happened again.

   - It definitely is NOT the browser cache.
   - I redeployed various times, without success.
   - From the appengine console I deleted the active instance without 
   success.

Then finally I incremented the version (appengine-web-app.xml), redeployed 
and switched the versions manually in the appengine console. - Does one 
have to change the version to ensure a successful switch?
 

-- 
You received this message because you are subscribed to the Google Groups 
"Google Web Toolkit" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to google-web-toolkit+unsubscr...@googlegroups.com.
To post to this group, send email to google-web-toolkit@googlegroups.com.
Visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
For more options, visit https://groups.google.com/groups/opt_out.

Re: UiBinder Button created hidden not responsive after being shown

[brec]

Summary of problem context: I have groups of buttons that display in the 
same place on the page; which group is displayed depends on what actions 
are available to the user. 

What I did is make an "ontop" CSS style containing z-index: . In my 
code, to make a group of buttons visible and responsive, I pass its 
DivElement to this method: 

DivElement[] layers = {aLayer, bLayer, cLayer, dLayer, eLayer}; 
> protected void showLayer(DivElement div) { 
> for (DivElement layer : layers) { 
> if (layer != div) { 
> layer.removeClassName(style.ontop()); 
> layer.addClassName(style.hidden()); 
> } 
> } 
> if (div != null) { 
> div.addClassName(style.ontop()); 
> div.removeClassName(style.hidden()); 
> } 
> } 
>

This appears to work OK. 

I wasn't using display:none because I have been depending on layout flow 
for my layout, and display:none takes the attributed element out of the 
flow. However, I hadn't considered using it on containers (divs) rather 
than elements (buttons), and that might be somewhat simpler than the 
technique described above. 

On Sunday, April 28, 2013 3:12:23 AM UTC-7, Thomas Broyer wrote:
>
> Use display:none rather than visibility:hidden then.
>
> On Sunday, April 28, 2013 12:00:44 PM UTC+2, brec wrote:
>>
>> Its parent *widget* is the HTMLPanel at the top of the ui.xml/UIBinder 
>> hierarchy; its parent *element*, in the DOM sense, is a div.
>>
>> I have just discovered that the problem relates to the fact that I have 
>> buttons in the same position, of which only certain ones are supposed to be 
>> visible at a given time. In other words, the user would see at the same 
>> position on the page one of:
>>
>>> ButtonA ButtonB ButtonC
>>>
>> or
>>
>>> ButtonD ButtonE ButtonF
>>>
>> or
>>
>>> BigButtonG (as wide either of the preceding groups)
>>>
>>
>> The problem is that regardless of visibility, whichever of the three 
>> above displays is declared last has (in effect) a higher z-index and is the 
>> only one that will be mouse-responsive. So I am just about to implement a 
>> solution of explicitly setting div z-indexes in the code which shows/hides 
>> button groups. 
>>
>> On Sunday, April 28, 2013 2:23:49 AM UTC-7, Thomas Broyer wrote:
>>>
>>>
>>> On Sunday, April 28, 2013 4:35:32 AM UTC+2, brec wrote:

 In the ui.xml:

 
>

>
 
>

 In java when it's time to show the button:

@UiField Button continu;
>
> ...
>
>showWidget(continu);
>
> ...
>
> protected void showWidget(Widget w) {
> showElement(w.getElement());
> }
>
> protected void showElement(Element e) {
> e.removeClassName(style.hidden());
>}
>

  The button is now visible to the eye, but not to the mouse: clicking 
 on it does not only not invoke its handler, it doesn't exhibit the small 
 visual effect of activation.

>>>
>>> How is the button attached to its parent widget?
>>>
>>

-- 
You received this message because you are subscribed to the Google Groups 
"Google Web Toolkit" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to google-web-toolkit+unsubscr...@googlegroups.com.
To post to this group, send email to google-web-toolkit@googlegroups.com.
Visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
For more options, visit https://groups.google.com/groups/opt_out.

How to dynamically fullsize a Canvas to a Dock-center?

[membersound]

Hi,

I have a canvas within the following layout:
DockLayoutPanel
 center
  ResizeLayoutPanel
   AbsolutePanel
Canvas

How can I set the coordinateSpace height/width always according to the 
actual size? How can I get the center size of the dock when creating the 
canvas?

I thought I could just walk up the parent tree from the canvas and get the 
clientwidth, but it is always = 0
canvas.getElement().getParentElement().getParentElement().getParentElement().getClientWidth()

What is wrong here?

-- 
You received this message because you are subscribed to the Google Groups 
"Google Web Toolkit" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to google-web-toolkit+unsubscr...@googlegroups.com.
To post to this group, send email to google-web-toolkit@googlegroups.com.
Visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
For more options, visit https://groups.google.com/groups/opt_out.

I want to use Apache Commons on the server, but the code is using the packages in gwt-dev.jar.

[Mohammad Al-Quraian]

I want to use this class RandomStringUtils, I included the Apache Commons 
jar in the server side, but my code/ide refers to the ones in 
the gwt-dev.jar, which won't work because it's not copied to the server. I 
tried to reorder the libraries in the build path but it didn't help.

How can I avoid this issue?

-- 
You received this message because you are subscribed to the Google Groups 
"Google Web Toolkit" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to google-web-toolkit+unsubscr...@googlegroups.com.
To post to this group, send email to google-web-toolkit@googlegroups.com.
Visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
For more options, visit https://groups.google.com/groups/opt_out.

How do you guys organise you styling? especially when using Gin and UiBinder.

[Mohammad Al-Quraian]

I'm using an external CSS file, however when I tried to use it as a client 
bundle, things get complex when you use Gin and Uibinder. I want something 
that makes the styles easy to use and change, also to have shared naming 
between the different views (for mobile and desktop).

So what practices seem to be working for you?

Cheers

-- 
You received this message because you are subscribed to the Google Groups 
"Google Web Toolkit" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to google-web-toolkit+unsubscr...@googlegroups.com.
To post to this group, send email to google-web-toolkit@googlegroups.com.
Visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
For more options, visit https://groups.google.com/groups/opt_out.

Re: Upload files using apache DiskFileItemFactory to GAE?

[Manuel Carrasco Moñino]

You can replace the default DiskFileFileItemFactory by your own, in
gwtupload you have two approaches for GAE: BlobstoreFileItemFactory and
MemCacheFileItemFactory

https://code.google.com/p/gwtupload/source/browse/#git%2Fgae%2Fsrc%2Fmain%2Fjava%2Fgwtupload%2Fserver%2Fgae


On Thu, Apr 25, 2013 at 5:06 PM, Jens  wrote:

> Dont use DiskFileItemFactory.
>
> http://commons.apache.org/proper/commons-fileupload/streaming.html
>
> (untested but thats probably your only option when using Apache FileUpload)
>
> -- J.
>
> --
> You received this message because you are subscribed to the Google Groups
> "Google Web Toolkit" group.
> To unsubscribe from this group and stop receiving emails from it, send an
> email to google-web-toolkit+unsubscr...@googlegroups.com.
> To post to this group, send email to google-web-toolkit@googlegroups.com.
> Visit this group at
> http://groups.google.com/group/google-web-toolkit?hl=en.
> For more options, visit https://groups.google.com/groups/opt_out.
>
>
>

-- 
You received this message because you are subscribed to the Google Groups 
"Google Web Toolkit" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to google-web-toolkit+unsubscr...@googlegroups.com.
To post to this group, send email to google-web-toolkit@googlegroups.com.
Visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
For more options, visit https://groups.google.com/groups/opt_out.

Re: UiBinder Button created hidden not responsive after being shown

[Thomas Broyer]

Use display:none rather than visibility:hidden then.

On Sunday, April 28, 2013 12:00:44 PM UTC+2, brec wrote:
>
> Its parent *widget* is the HTMLPanel at the top of the ui.xml/UIBinder 
> hierarchy; its parent *element*, in the DOM sense, is a div.
>
> I have just discovered that the problem relates to the fact that I have 
> buttons in the same position, of which only certain ones are supposed to be 
> visible at a given time. In other words, the user would see at the same 
> position on the page one of:
>
>> ButtonA ButtonB ButtonC
>>
> or
>
>> ButtonD ButtonE ButtonF
>>
> or
>
>> BigButtonG (as wide either of the preceding groups)
>>
>
> The problem is that regardless of visibility, whichever of the three above 
> displays is declared last has (in effect) a higher z-index and is the only 
> one that will be mouse-responsive. So I am just about to implement a 
> solution of explicitly setting div z-indexes in the code which shows/hides 
> button groups. 
>
> On Sunday, April 28, 2013 2:23:49 AM UTC-7, Thomas Broyer wrote:
>>
>>
>> On Sunday, April 28, 2013 4:35:32 AM UTC+2, brec wrote:
>>>
>>> In the ui.xml:
>>>
>>> 

>>>

>>> 

>>>
>>> In java when it's time to show the button:
>>>
>>>@UiField Button continu;

 ...

showWidget(continu);

 ...

 protected void showWidget(Widget w) {
 showElement(w.getElement());
 }

 protected void showElement(Element e) {
 e.removeClassName(style.hidden());
}

>>>
>>>  The button is now visible to the eye, but not to the mouse: clicking on 
>>> it does not only not invoke its handler, it doesn't exhibit the small 
>>> visual effect of activation.
>>>
>>
>> How is the button attached to its parent widget?
>>
>

-- 
You received this message because you are subscribed to the Google Groups 
"Google Web Toolkit" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to google-web-toolkit+unsubscr...@googlegroups.com.
To post to this group, send email to google-web-toolkit@googlegroups.com.
Visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
For more options, visit https://groups.google.com/groups/opt_out.

Re: UiBinder Button created hidden not responsive after being shown

[brec]

Its parent *widget* is the HTMLPanel at the top of the ui.xml/UIBinder 
hierarchy; its parent *element*, in the DOM sense, is a div.

I have just discovered that the problem relates to the fact that I have 
buttons in the same position, of which only certain ones are supposed to be 
visible at a given time. In other words, the user would see at the same 
position on the page one of:

> ButtonA ButtonB ButtonC
>
or

> ButtonD ButtonE ButtonF
>
or

> BigButtonG (as wide either of the preceding groups)
>

The problem is that regardless of visibility, whichever of the three above 
displays is declared last has (in effect) a higher z-index and is the only 
one that will be mouse-responsive. So I am just about to implement a 
solution of explicitly setting div z-indexes in the code which shows/hides 
button groups. 

On Sunday, April 28, 2013 2:23:49 AM UTC-7, Thomas Broyer wrote:
>
>
> On Sunday, April 28, 2013 4:35:32 AM UTC+2, brec wrote:
>>
>> In the ui.xml:
>>
>> 
>>>
>>
>>>
>> 
>>>
>>
>> In java when it's time to show the button:
>>
>>@UiField Button continu;
>>>
>>> ...
>>>
>>>showWidget(continu);
>>>
>>> ...
>>>
>>> protected void showWidget(Widget w) {
>>> showElement(w.getElement());
>>> }
>>>
>>> protected void showElement(Element e) {
>>> e.removeClassName(style.hidden());
>>>}
>>>
>>
>>  The button is now visible to the eye, but not to the mouse: clicking on 
>> it does not only not invoke its handler, it doesn't exhibit the small 
>> visual effect of activation.
>>
>
> How is the button attached to its parent widget?
>

-- 
You received this message because you are subscribed to the Google Groups 
"Google Web Toolkit" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to google-web-toolkit+unsubscr...@googlegroups.com.
To post to this group, send email to google-web-toolkit@googlegroups.com.
Visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
For more options, visit https://groups.google.com/groups/opt_out.

Re: UiBinder Button created hidden not responsive after being shown

[Thomas Broyer]

On Sunday, April 28, 2013 4:35:32 AM UTC+2, brec wrote:
>
> In the ui.xml:
>
> 
>>
>
>>
> 
>>
>
> In java when it's time to show the button:
>
>@UiField Button continu;
>>
>> ...
>>
>>showWidget(continu);
>>
>> ...
>>
>> protected void showWidget(Widget w) {
>> showElement(w.getElement());
>> }
>>
>> protected void showElement(Element e) {
>> e.removeClassName(style.hidden());
>>}
>>
>
>  The button is now visible to the eye, but not to the mouse: clicking on 
> it does not only not invoke its handler, it doesn't exhibit the small 
> visual effect of activation.
>

How is the button attached to its parent widget?

-- 
You received this message because you are subscribed to the Google Groups 
"Google Web Toolkit" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to google-web-toolkit+unsubscr...@googlegroups.com.
To post to this group, send email to google-web-toolkit@googlegroups.com.
Visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
For more options, visit https://groups.google.com/groups/opt_out.