GWT meet in Helsinki next week?

[Michael Vogt]

Hello.

I am in Helsinki next week for a GWT fundamentals training. Is there any 
interest for some kind of "GWT meet up" at Monday evening?


Greetings,
Michael

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GWT, IE8 and screen reader

[Michael Vogt]

Hello.

 I have a strange problem when using IE8 with the screen reader jaws. For 
example, when a text field receives the focus, the whole page is read from 
the beginning, Looking at the html, it seems a lot of the html is 
duplicated inside a __listener attribute. This does not happen with IE9 or 
IE10.

I read where the __listener attribute is coming from. Now I wonder, if Jaws 
also sees this __listener attribute, and gets confused by multiple 
identical id attributes showing up in the html. IDs are used in the for 
attribute of the label and the aria-labeledby of the text field.

Has someone seen the same problem, and has a solution for it? 


Thanks,
Michael

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Re: SASS Compiler

[Michael Vogt]

Very sorry for the late reply. Missed the ongoing discussion.

This is pretty awesome - scss is a superset of css3, so including this 
> linker means that GWT CSS can now fully use CSS3?
>
> Well, you can use in the scss file, whatever the Vaadin SassCompiler 
supports. 
As the resulting CSS needs to be added to the host file, I don't see that 
there is any restriction on what you can use of CSS3 - except the 
restriction coming from the browser itself.
 

> It shouldn't affect runtime javascript size, or compile time (much) or 
> anything like that, as it just unplugs the GWT CSS compiler, and plugs in 
> the CSS3/SCSS compiler, correct?
>
> Yes, the linker runs during compile time, or when the page is refreshed 
when using dev mode 

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Re: Access to Java class variable during runtime

[Michael Vogt]

Very helpful. Thanks.

I think I go with the proxies.

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Re: Access to Java class variable during runtime

[Michael Vogt]

Hello.

Thank you for your answer.

No need to go so extreme - 
> https://developers.google.com/web-toolkit/doc/latest/DevGuideCodingBasicsJSNI#methods-fields
> You can access static java methods from javascript as described in that 
> link.
>
>  Yes, what you suggest works, of course. What I would like to achieve is 
to also access private and non-static fields. This can easily be done by 
adding a native function to every class, who's fields I want to access. 
That works already (well, except that entry does only handle functions, but 
this is an easy change). But I would like to get there without the need to 
write extra code for this, if possible.

When looking at the application with a JavaScript debugger, I see the 
classes and variable, just did not find a way to access them by JavaScript 
yet.


Cheers,
Michael

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Access to Java class variable during runtime

[Michael Vogt]

Hello.

I would like to have to possibility to access a Java class variable from 
JavaScript, without changing the Java class itself. The idea is, to display 
the values of the variables continuously while the application is running. 
The usecase for me right now would be, that I want to check the 
calculations of a drag while I do the drag. Sure I can add GWT.log() calls, 
but accessing these values without code changes would be so much nicer.

I already tried to find a way, but failed so far. Any tips how to get 
there? Maybe by providing a specific Generator that adds some JSNI code 
automatically?


Thanks,
Michael

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dataGrid.setSelectionEnabled(true)

[Michael Vogt]

Hello.

Unfortunately I already ran into the next feature of the DataGrid I seem to 
have problems to understand its usage: row selection by clicking in the 
first cell of the row (which right now is a simple TextCell, if that 
matters) 

Basically I have setup the selection support as it is shown in the custom 
datagrid in the showcase. There, the row selection is done by checkboxes. I 
would need to implement the selection by mouse. Some class names are added 
to a cell when I click on it, but multiple selection with shift or control 
key does not work.

In a comment in the showcase datagrid it says:

* This table will uses a checkbox column for selection. Alternatively,
* you can call dataGrid.setSelectionEnabled(true) to enable mouse


This call is nowhere to be found with GWT 2.5. So, what Do I need to do to 
get selection working?


Thanks,
Michael

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Re: DataGrid and EditTextCell in sub rows problem

[Michael Vogt]

Hello Nicolas. 

Thank you for your answer. Very helpful.

I came up with a slightly different solution (for now). I created a 
subclass of a column, and overrode the onBrowserEvent() call. There I 
receive the context with the subIndex, which is 0 when the root cell was 
edited, and reflects the sub row index when a cell in a sub row was edited. 
Then I just provide this to the fieldUpdater and the onBrowserEvent of the 
Cell. 

This also only allows for one level of sub rows, but I need more. This is 
where your approach looks more useful.


@Override
public void onBrowserEvent(Context context, Element elem, final T 
object,
NativeEvent event) {
// The provided row is always the root row, so we need to find the
// correct one when a sub row was edited
actualIndex = context.getSubIndex();
actualObject = object;
if (0 != context.getSubIndex() && object instanceof RowDTO) {
actualIndex = context.getSubIndex();
actualObject = (T) ((RowDTO) object).getChild(actualIndex - 1);
context = new Context(context.getIndex(), context.getColumn(),
actualObject, actualIndex);
}

ValueUpdater valueUpdater = (getFieldUpdater() == null) ? null
: new ValueUpdater() {
@Override
public void update(C value) {
getFieldUpdater().update(actualIndex, object, 
value);
}
};

getCell().onBrowserEvent(context, elem, getValue(actualObject), 
event,
valueUpdater);
}


Cheers,
Michael

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DataGrid and EditTextCell in sub rows problem

[Michael Vogt]

Hello.

I have EditTextCells in sub rows of a DataGrid, basically created like in 
the sample 
DataGrid.
 
I just replace the TextCells in the sub rows with EditTextCells.

There are two problems:
- When entering edit mode in a sub row cell, the text that is shown is 
taken from the root row cell
- When the value ist stored, it is also stored in the root row cell

Am I doing something wrong, or is this not possible?

You can see the effect here :


Any help welcome,
Michael

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Re: DataGrid with several tbody elements possible

[Michael Vogt]

So, maybe my question should have been, "How to provide my 
own HtmlBuilderFactory".

>
> That wouldn't help. HtmlBuilderFactory is only a type-safe way of building 
> a SafeHtml.
>
> Have a look at AbstractCellTable and how it depends on having a single 
> tbody. If you really need/want several tbodies, you'll have to fork the 
> whole thing; so you could then fork CellTableBuilder to allow it to create 
> several sections (I wonder what kind of "element builder" it could return 
> from finish() though). If I were you, I'd first ask myself whether I really 
> need those multiple tbodies…
>

Thank you for your answer Thomas.

Yes, I really need it, when there is a way to get there in an acceptable 
timespan. I'll look into the AbstractCellTable as you suggested and decide 
then.


Cheers,
Michael

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Re: DataGrid with several tbody elements possible

[Michael Vogt]

Thank you both for your quick answers.

Yes I am using the TableBuilder. What's basically needed is a way to 
overwrite the builders that are used after that, maybe 
the HtmlBuilderFactory would be a good place, as the current implementation 
of the call startBody() throws an exception when I try to create another 
tbody element.

Unfortunately I failed to replace the HTMLBuilderFactory with deferred 
binding. My own class just was not used.

I am sure there are reasons to allow only one tbody right now. I assume 
this has to do with the selection handling and the keyboard navigation. I 
expect I can handle these as I can provide my own implementations for these.


So, maybe my question should have been, "How to provide my 
own HtmlBuilderFactory".


Greetings,
Michael

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DataGrid with several tbody elements possible

[Michael Vogt]

Hello.

We are using the DataGrid for a new widget, and so far all works pretty 
good. The only missing feature was to add a ScrollHandler to it, so we 
could add an infinite scrolling feature, which works pretty good.

Now I would like to add some structuring to the data by adding more than 
one tbody element. The DataGrid prevents this, and I did not find a good 
way to overwrite this. Also deferred binding replace of some classes failed.

Does someone have a tip for me to get this done?

Issue 5423 (CellTable is not easy to extend) is closed saying:

The next version of GWT (2.5) has a refactored CellTable that internally uses 
builders that you can inherit, override (not all methods are private), and use 
instead of the default behavior.



I just don't see how to do it, as all the implementations are created with 
new instead of GWT.create(), so they can't be replaced by deferred binding, 
and I don't see a way to register my new builders.


Thanks,
Michael

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default styles of DataGrid

[Michael Vogt]

Hello.

I set up a simple DataGrid, basically the code from the sample. Even when I 
remove all the style definitions from the code, there as still styles added 
automatically. Mostly hover and selection styles. Any way to tell the 
DataGrid to not apply these default styles?


Thanks,
Michael

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Receiving scroll events from DataGrid

[Michael Vogt]

Hello.

I need to handle scrolling of the DataGrid content outside the Grid. There 
are 2 methods available to basically add Handlers (addHandler() and 
addDomHandler()), but they are not called. Adding an DomEventListener() has 
the same effect.

Am I doing something wrong or is there no way to get there (meaning, except 
changing the DataGrid code, which works of course).


Thanks in advance,
Michael

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Re: GWT Developer Plugin for Firefox 8

[Michael Vogt]

Hello Alan.

> Alright I have built and tested it for all platforms
> Have fun!
>
Thank you for the update. Worked for me without problem today.

Ubuntu 11.10 32-bit with GWT 2.4


Greetings,
Michael

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Re: Firefox 7 GWT plugin

[Michael Vogt]

Hello Ramesh.


>               Please help me to download gwt plugin for firefox 7.
>
Does providing the download link to you help?
http://google-web-toolkit.googlecode.com/svn/trunk/plugins/xpcom/prebuilt/gwt-dev-plugin.xpi


Greetings,
Michael

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Re: Firefox 7.0.1 plugin does not work

[Michael Vogt]

Hello.

Well, I am working with Firefox 7 since begining of this month without
any problem. Please see this thread to download it:
http://groups.google.com/group/google-web-toolkit/browse_thread/thread/f7f283aed77d31d0/e5e7c26fee6514dd?lnk=gst&q=firefox+7+plugin#e5e7c26fee6514dd


Hope this helps,
Michael

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Re: GWT Designer fails under Eclipse 3.7 with latest update

[Michael Vogt]

> What is stopping you from upgrading to 2.2.0+?
>
You mean GWT? Our server setup. All applications access one servlet,
which is compiled with GWT 2.0.4. To change this, we would need to
recompile a load of applications, which just hasn't been done.

>That is the supported version of gwt-designer.
>
Just checked again and could not find that this is actually the case.
And it definitely worked before the update without problems. Btw, we
us the full version of the Designer.


Greetings,
Michael

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Re: GWT Designer fails under Eclipse 3.7 with latest update

[Michael Vogt]

Hello.

> Please update to the latest GWT Designer build.
> We have also added support for Ubuntu 11.10.
>
I just updated Ubuntu to version 11.10 and Eclipse to 3.7, and it
looks like I can use GWT Designer. But not with projects using GWT
2.0.4.

Unfortunately, we still need to use version 2.0.4 for most of our
projects. When opening Designer, I get the error message that
XulRunner is missing.

To verify this, I created a new GWT application using GWT 2.4. When
opening an empty class extending Composite, I can open it. Only by
switching to GWT 2.0.4, the error is shown. What needs to be done to
get Designer working with version 2.0.4?

The link for libwebkit as mentioned above is set. Eclipse and plugins
are clean installed int he latest version.


Greetings,
Michael

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Re: GWT App Indexing

[Michael Vogt]

Hello.

> I want to make an app which allows users to Post Content with GWT/GAE
> Can the text in the Content be indexed by Search Engines?
> or i have to use something else to build this ?
>
Maybe this answers your questions:
http://googlewebmastercentral.blogspot.com/2009/10/proposal-for-making-ajax-crawlable.html


Greetings,
Michael

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Re: GWT Developer Plugin for Firefox 7

[Michael Vogt]

>> For those who had experienced a crash on 32bit Linux, would you mind doing
>> me a favor by trying the attached xpi file?
>>
> Yes, this works with Ubuntu 11.04 and Firefox 7.0.1 now for me.
>
I should have mentioned, that it works now on 32-bit and 64-bit Ubuntu for me.


Greetings,
Michael

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Re: GWT Developer Plugin for Firefox 7

[Michael Vogt]

Hello Alan.

> For those who had experienced a crash on 32bit Linux, would you mind doing
> me a favor by trying the attached xpi file?
>
Yes, this works with Ubuntu 11.04 and Firefox 7.0.1 now for me.


Thanks,
Michael

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Re: GWT Developer Plugin for Firefox 7

[Michael Vogt]

> works perfectly on my Ubuntu 64 bit
> Linux N53SV 2.6.38-11-generic #50-Ubuntu SMP Mon Sep 12 21:17:25 UTC 2011
> x86_64 x86_64 x86_64 GNU/Linux
> FF 7.0.1
>
Yes works also on my ThinkPad with Ubuntu 11.04 64-bit and Firefox
7.0.1 at home.

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Re: GWT Developer Plugin for Firefox 7

[Michael Vogt]

Hello Alan.

Thanks for the update.


> Yes. I checked it in last night and tested it on all the OS.
> Let me know if you have any problems with it.
>
Just tried to run one of my applications with it. Crashes Firefox 7
(updated through the Ubuntu update) before the application is loaded
on Ubuntu 11.04 32 bit.

Could not find a log other than the dump from the crash reporter.
Should I send you this?


Greetings,
Michael

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Re: GWT + No Java Server

[Michael Vogt]

Hi.

> The idea would be to host those files on a non Java server, a classic
> Apache 2 server for instance. Server treatments could be in PHP or
> something else (but not generated by GWT of course).
>
> Is this possible?
>
Absolutely.

When you use REST for server access. you get a completely server
independent GWT application, so you can implement the server side in
any way you wish.


Greetings,
Michael

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Re: GWT Developer Plugin for Firefox 6

[Michael Vogt]

Hello.

> Can you pass the path to download the plugin?
>
I got it from here:
http://google-web-toolkit.googlecode.com/svn/trunk/plugins/xpcom/prebuilt/


Greetings,
Michael

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Re: create Junit Test case for my Presentation

[Michael Vogt]

Hello.

> I am trying to create Junit Test case for my Presentation Layer ,
> while creating Presentation instance in setup method of Junit it goes
> througn GWT.Create at this point it fails saying
>
To test your presentation layer, you need to use GwtTestCase instead
of plain JUnit:
http://code.google.com/webtoolkit/doc/latest/DevGuideTesting.html


Hope this helps,
Michael

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Re: My GWT-App does not work in Android

[Michael Vogt]

Hello Magnus.

> Users report that they cannot access the app with Android.
> I cannot test it myself, but I would guess that Android, which comes from
> Google, would be supported by GWT, too?
>
> What can I do?
>
I just loaded the page with my Nexus One and Galaxy Tab without
problems (as far as I can tell). What is the problem your users
report?

When I test my deployed GWT applications on Android devices and iPad,
functionally they all work.


Greetings,
Michael


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Re: GWT on server side ?

[Michael Vogt]

> Thanks Michael .
>
You're welcome.


> Who needs entire app, specially in enterprise environment. Typical
> user uses only 5% of the pages.
>
When this is the case for your application, then look into code
splitting 
(http://code.google.com/webtoolkit/doc/latest/DevGuideCodeSplitting.html).
That way you can serve only the code that is needed on the client.
Used it in a recent project. Works very well.


Greetings,
Michael


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Re: GWT on server side ?

[Michael Vogt]

Hi.

> Is it possible use GWT to build server side components, like "html
> +javascript" pages using composites some kind of stuff?
>
When you want to run the application on the server side, maybe you are
looking for Vaadin:
http://vaadin.com/home

It uses GWT for the client, while the application runs on the server.


Greetings,
Michael


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Re: google plugin/build deletes .svn directory in src/main/webapp

[Michael Vogt]

> Something like that, yes.
> Where should the '-war ' be specified?
>
When you click the red folder button in the toolbar of eclipse to
compile a project, you find an advanced area in the dialog that is
shown. There you have the additional compiler argument area to add the
-war switch.

> I do indeed have it active on my run configurations, but the actual Eclipse
> builder that's running in the background is the one that is likely
> responsible with the removal of the svn dirs. I also have the war directory
> correctly specified in the properties of the project, under Google - Web
> Application, but when configuring a new Eclipse workspace, that option may
> very well be configured minutes later, when the Eclipse builder may already
> have removed the svn directories (which is what just happened to me). What
> I'm not clear about is what does the plugin have to do with the svn
> directories? Why does it touch these directories in the first place?
>
Sorry, can't help here, since I have not seen this problem in my
projects (which are also store in svn.


> Thank you for the help and the quick response.
>
You're welcome.


Greetings,
Michael

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Re: google plugin/build deletes .svn directory in src/main/webapp

[Michael Vogt]

Hello

> This is a critical problem - the plugin simply removes the .svn directories,
> completely messing up the entire workspace - everything below webapp is now
> unversioned and shown to be committed. Is there any feedback on this?
>
Do you mean that when you compile your application, everything inside
the module folder is replaced? We solve this with the additional
compiler argument '-war '. That way the compiled files are
saved in the specified folder.

Hope I understood you correctly,
Michael

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Re: TextArea - issues

[Michael Vogt]

> 1) Keep entering - lines will automatically break and goes to next
> line - enter till you see few line
> 2)  getValue()
> 3) store in datastore
> 4) get from data store and display in another TestArea.
>
> Somewhere loosing line breaks ?
>
Can you post a sample on a public server to look at?


Greetings,
Michael Vogt

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Re: GWT web app for mobile

[Michael Vogt]

> I agree :)
>
Thanks :-)


> but the
> cost for a big project (it is our case) is the compilation and
> deployment tasks...
>
I agree in a way. The problem arrises here when we are close to
release of a new version, and the testers want to see the fixes
immediately. Since the application is tested for release, I can't use
any of the compilation speedup tricks. At these times, I too would
like to have a faster compile. Especially for this nitty gritty
changes where a word is spelled wrong or a margin of an element should
change (when using CssResource) ...

But in general, I don't mind how fast the compile is, since I'm not
forced to sit in front of the computer watching how it progresses ;-)
Since I usually work using the development mode, which is fast for me,
and just deploy from time to time to the test server (maybe once a
week).

Deployment as such seems pretty easy and fast for me.


> It is the reason why the use of gwtquery is a means to mix the best of
> two world (and for mobile jquerymobile as gwtquery plugin)...
>
You mean, you compile the application in GWT and do some
implementation outside of it by handwritten JavaScript? This is
tempting, but I am not sure if I would use this. But when it helps you
to speed up turnaround time, excelent. And it shows how flexible GWT
can be adapted to specific needs :-)


Just my 2 cents,
Michael

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Re: GWT web app for mobile

[Michael Vogt]

Hello.


> still use it daily... but from my point of view it becomes more and
> more complex, like j2EE has become... How could we go back to more
> simplicity? Mobile applications are maybe a means to go back to roots.
>
I decide with every project how I structure the application. The good
thing is in my pov, that you are not forced to use all the MVP
classes, uibinder, editors, and so on. For some projects it is very
helpfull to have these available, but other just don't need it.

When comparing the applications I did with jQuery to the ones done
with GWT, I'm feeling much more comfortable when the functionality
grows into something comparable to an application. I almost only would
use jQuery and the likes when enhanceing a more traditional website.

YMMV.


Greetings,
Michael Vogt

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Re: TextArea - issues

[Michael Vogt]

Hello.

> I am capturing user input (multi line)  in
> "com.google.gwt.user.client.ui.TextArea" - storing datastore.
> and show the same in another TextArea of another component.
>
> Issue, when I play it back it is completely loosing line breaks, and
> showing as single line and beyond TextArea boundaries.
>
I'm not quite sure I fully understand the problem. But one thing to
watch out for is, that linebreaks from textareas are stored as \n and
or \r. To keep the linebreaks when displaying the text in a div, for
example, remember that you have to replace them with .

Hope this helps,
Michael

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Re: Dev Plugin for Firefox 5

[Michael Vogt]

Hello.

> what's the version number of the plugin?
> Mine is 1.0.10401 and when I installed FF 5 it complained that this
> plugin is not compatible with FF 5 and the disabled it.
>
I just checked. I have the same versions (FF and plugin) running here,
and it works fine.

Unfortunately don't know what can lead to the problems you see.


Greetings,
Michael Vogt

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Re: UIBinder and IE6

[Michael Vogt]

Hello Thomas.

Thanks for you long explanation.


> UiBinder is nothing more than a code generator. All it does generate
> you can code it by hand. And UiBinder does nothing more than some
> setInnerHTML and/or instanciating widgets, so it doesn't change
> anything re. browser support.
>
You are right, my question was not worded correctly. I guess the
question should habe been about the widgets that get used. I
understand that they are the same as I would code the layout with
Java. Correct?

Thanks for the heads up regarding the RootLayoutPanel and the transparent png's.


> As for Google apps no longer supporting IE6, it's just about Google
> Apps, not GWT.
>
Definitely.


Cheers,
Michael Vogt

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Re: UIBinder and IE6

[Michael Vogt]

Hello.

I would like to use UIBinder to define the layouts for my next
application. Problem is, that the client site still use IE6 as their
main browser.

Since I did not find it explicitly statet in the docs of GWT, I'd like
to ask if there are any limitations when using UIBinder regarding IE6
compatibility.


Thanks in advance,
Michael Vogt

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UIBinder and IE6

[Michael Vogt]

Hello.

I would like to use UIBinder to define the layouts for my next
application. Problem is, that the client site still use IE6 as their
main browser.

Since I did not find it explicitly statet in the docs of GWT, I'd like
to ask if there are any limitations when using UIBinder regarding IE6
compatibility.


Thanks in advance,
Michael Vogt

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one servlet, many clients with gwt-rpc

[Michael Vogt]

Hello.

I just received a question, if it is possible to access one central
servlet (extending RemoteServiceServlet) that can be accessed by
several gwt client applications. The interface that is implemented by
the servlet is fixed. The same interface is used by every client
application.

I could not find any specific information about it in the docs and on
this list, so I tried it out. When accessing the service, I get a null
pointer exception - stacktrace below. My guess is, this has something
to do with the rpc policy file.

What seem to work is, when we install the client apps into the same
war file as the servlet. The problem exists, when we try to install
the client applications as separate war files.

Any comments if this should work at all, and how to get it running is welcome.

We are using for this GWT 1.7.1 and Glassfish 2.1


Thanks,
Michael



Here is the stacktrace:

WebModule[/AppsAWC]Exception while dispatching incoming RPC call
java.lang.NullPointerException
at
com.sun.enterprise.web.logger.LoggerBase.write(LoggerBase.java:215)
at
com.sun.enterprise.web.logger.LoggerBase.log(LoggerBase.java:172)
at
org.apache.catalina.core.ApplicationContext.log(ApplicationContext.java:839)
at
org.apache.catalina.core.ApplicationContextFacade.log(ApplicationContextFacade.java:323)
at javax.servlet.GenericServlet.log(GenericServlet.java:335)
at
com.google.gwt.user.server.rpc.RemoteServiceServlet.doGetSerializationPolicy(RemoteServiceServlet.java:219)
at
com.google.gwt.user.server.rpc.RemoteServiceServlet.getSerializationPolicy(RemoteServiceServlet.java:117)
at
com.google.gwt.user.server.rpc.impl.ServerSerializationStreamReader.prepareToRead(ServerSerializationStreamReader.java:429)
at
com.google.gwt.user.server.rpc.RPC.decodeRequest(RPC.java:234)
at
com.google.gwt.user.server.rpc.RemoteServiceServlet.processCall(RemoteServiceServlet.java:164)
at
com.google.gwt.user.server.rpc.RemoteServiceServlet.doPost(RemoteServiceServlet.java:86)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:754)
at jorapi.awc.server.AWC.service(AWC.java:314)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)
at
org.apache.catalina.core.ApplicationFilterChain.servletService(ApplicationFilterChain.java:427)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:315)
at
org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:287)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:218)
at
org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:648)
at
org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:593)
at
com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:94)
at
com.sun.enterprise.web.PESessionLockingStandardPipeline.invoke(PESessionLockingStandardPipeline.java:98)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:222)
at
org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:648)
at
org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:593)
at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:587)
at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:1093)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:166)
at
org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:648)
at
org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:593)
at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:587)
at
org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:1093)
at
org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:291)
at
com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.invokeAdapter(DefaultProcessorTask.java:666)
at
com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.doProcess(DefaultProcessorTask.java:597)
at
com.sun.enterprise.web.connector.grizzly.DefaultProcessorTask.process(DefaultProcessorTask.java:872)
at
com.sun.enterprise.web.connector.grizzly.DefaultReadTask.executeProcessorTask(DefaultReadTask.java:341)
at
com.sun.enterprise.web.connector.grizzly.DefaultReadTask.doTask(DefaultReadTask.java:263)
at
com.sun.enterprise.web.connector.grizzly.DefaultReadTask.doTask(DefaultReadTask.java:214)
at com.sun.enterprise.web.portunif.PortUnificationPipeline
$PUTask.doTask(PortUnificationPipeline.java:382)
at
com.sun.enterprise.web.connector.grizzly.TaskBase.run(TaskBase.java:264)
at
com.sun.enterprise.web.connector.grizzly.ssl.SSLWorkerThread.run(SSLWorkerThread.java:106)
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Hosted mode hangs on closing on linux

[Michael Vogt]

Hi all.

When I try to quit a GWT application running in hosted mode, the
corresponding java process seems to crash, so I have to kill it with
the process viewer. This happens both when closing the windows of the
hosted browser or stopping the application through the IDE (IntelliJ
IDEA).

This happens on Ubuntu 9.10, GWT 1.7.1 (I believe this happened also
with older versions of GWT, can't check right now), Java 1.6u16.

Any idea how to get rid of this problem?


Thanks,
Michael Vogt

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Re: JUnit Tutorial

[Michael Vogt]

Hello Chris.

> I had similar problems setting up JUnit tests just yesterday, received
> a useful reply, and wrote up a solution. The error I reported is not
> the same as your one (though I did come across it while trying to
> figure out how to use junitCreator), but I think you'll find my
> solution useful. Basically, I think the GWT tutorial isn't clear
> enough about how to set up unit tests using their junitCreator tool
> (at least for someone like myself who isn't very familiar with Eclipse
> and the toolchain).
>
Thanks for your answer. Unfortunately my problem seems to be a
different one. I try to run the tests from the comandline.


Greetings,
Michael Vogt

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Re: JUnit Tutorial

[Michael Vogt]

Hello all.

As a refresher, I tried to follow the unit testing tutorial from
http://code.google.com/intl/zh-CN/webtoolkit/tutorials/1.6/JUnit.html.
All works well until I try to run the unit test. It fails with 'Class
not found "com.google.gwt.sample.stockwatcher.client.StockWatcherTest"'

I checked all the paths and the scripts, but can not find anything wrong there.

The script that was generated looks like this:

#!/bin/sh
APPDIR=`dirname $0`;
java  -Dgwt.args="-out www-test" -Xmx256M -cp
"$APPDIR/src:$APPDIR/test:$APPDIR/war/WEB-INF/classes:/usr/share/java/junit.jar:/usr/lib/gwt/gwt-user.jar:/usr/lib/gwt/gwt-dev-linux.jar"
junit.textui.TestRunner
com.google.gwt.sample.stockwatcher.client.StockWatcherTest "$@";


Any idea?


Thanks,
Michael Vogt

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Re: Fwd: Tree performance

[Michael Vogt]

Hi Greg.


TreeItems use up a lot of HTML "boxes", so drawing thousands of them
> equates to drawing tens of thousands of HTML boxes. That takes time in
> javascipt.
>
> I did this test program some time ago to see what the difference was
> between Tree and FastTree - you might be able to use this to your own
> practical limit.
>

Cool, thanks a lot,
Michael

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Fwd: Tree performance

[Michael Vogt]

Hi.

Answer forwarding to the group.

What I should have mentioned is, that the transport of the data over
the wire is no problem, since this is an internal application.


Greetings,
Michael Vogt


-- Forwarded message --
From: trist <[EMAIL PROTECTED]>
Date: Tue, Nov 11, 2008 at 15:59
Subject: Re: Tree performance
To: Michael Vogt <[EMAIL PROTECTED]>


http://google-web-toolkit-incubator.googlecode.com/svn/trunk/demo/FastTree/FastTreeDemo.html

On 11 Lis, 15:53, "Michael Vogt" <[EMAIL PROTECTED]> wrote:
> Hello all.
>
> The question I need to find an answer to is, what is the practical
> limit of number of items in a leaf of a tree element. Does somebody
> have experience with this? Is the tree already too slow to use with
> hundred items, or are thousand items usable?
>
> Is there a tree available, that allows paging the items in a tree element?
>
> Thanks a lot,
> Michael Vogt

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Tree performance

[Michael Vogt]

Hello all.

The question I need to find an answer to is, what is the practical
limit of number of items in a leaf of a tree element. Does somebody
have experience with this? Is the tree already too slow to use with
hundred items, or are thousand items usable?

Is there a tree available, that allows paging the items in a tree element?


Thanks a lot,
Michael Vogt

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Re: Your opinion sought: Jetty or Tomcat?

[Michael Vogt]

Hi Bruce.

> As part of this effort, we've all but decided to switch the hosted mode
> embedded HTTP server from Tomcat to Jetty. Would this break you? (And if so,
> how mad would you be if we did it anyway?) We figure most people who really
> care about the web.xml and so on are already using "-noserver" to have full
> control over their server config.
>
I personally would welcome Jetty. I'm using it as part of Grails right
now. It's fast and easy going.


Cheers,
Michael

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Re: Poll: GWT 1.4.62 vs 1.5 -- what are you using? what are your plans?

[Michael Vogt]

Hi.

On Fri, Sep 26, 2008 at 07:40, reechard <[EMAIL PROTECTED]> wrote:
> Yes no yes no yes no now.
>
Same for me.

When I started to work with GWT at the beginning of this year, I
looked at version 1.4 and the trunk of 1.5. It was very quickly clear
to me, that I don't bother to start with 1.4, since 1.5 looked so much
improved.

I work on the trunk since then, and it is great to see all the
enhancements coming in every day. The trunk broke for me only once.
Filed a bug, which was resolved quickly.


Greetings,
Michael

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trunk and unit tests

[Michael Vogt]

Hi.

Something has changed between revision 3618 and the current trunk,
that breaks the ability to run my unit tests in IntelliJ.

When I start IntelliJ with GWT_HOME pointing to revision 3618, the
tests run just fine. Starting IntelliJ using the current trunk of GWT,
I get an timeout error:

com.google.gwt.junit.client.TimeoutException: The browser did not
contact the server within 6ms.
 - 1 client(s) haven't responded back to JUnitShell since the start of the test.
 Actual time elapsed: 60.035 seconds.


Any idea where this might come from?


Thanks,
Michael

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EventListener doesn't get called

[Michael Vogt]

Hi.

I have a small problem, which I don't understand where it comes from -
meaning if it is a bug or I'm doing something wrong.

I am doing something like this:

---
   Element editableElement = DOM.getElementById( "id");
   DOM.sinkEvents( item, Event.ONCHANGE);
   DOM.setEventListener( editableElement, new EventListener() {
 public void onBrowserEvent( Event event ) {
   Window.alert( "changed");
 }
   } );
---

This onBrowserEvent is never called. When I substitute the creation of
the EventListener with 'this' and and add a onBrowserEvent to the
class, this works.

So, should the EventListener above be called, or is it meant to work
only when adding the onBrowserEvent method to the class?


Thanks,
Michael

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Re: New GWT Incubator Drop available

[Michael Vogt]

Hi.

I know its a bit late, but...

> Also, on the topic of gwt-incubator,  we (the gwt team) are having
> discussions about whether the gwt-incubator should compile against
>  a) gwt-1.5 and gwt-trunk
>  b) latest gwt-milestone and gwt-trunk
>  c) only gwt-trunk.
>
I'd vote for b)


Thanks,
Michael Vogt

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Re: How to write xml files with GWT

[Michael Vogt]

> On the server.
>
Then you need to choose your way to get the file to the client. For
example by using the RequestBuilder, which has the advantage that you
are free to choose the access on the server side. When you got the xml
on the client, you can use the XmlParser to parse the xml data.

There seems to be a tutorial on IBM's developerworks, that shows how
this works. Registration needed:
http://www.ibm.com/developerworks/edu/x-dw-x-xmlgwt.html


Hope this helps,
Michael Vogt

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Re: How to write xml files with GWT

[Michael Vogt]

Hi Max.

>I know how to read and parse xml file with GWT. But I would
> like to write or modify xml files with GWT. Is there a way to do it?
> Is there any demo or example ? I have googled it a bit but has no luck
> yet. Thanks for your help.
>
Where do you want to save the xml-file? On the client or the server?


Greetings,
Michael

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