Re: SuperDevMode and -noserver (Tomcat) debugging

[Thad Humphries]

Sorry, I meant to add that when I run-codeserver, I do see this anomaly:

[INFO]Compiling 1 permutation
[INFO]   Compiling permutation 0...
[INFO]   Source Maps Enabled
[INFO]Compile of permutations succeeded
[INFO] Linking into 
/var/folders/t3/2t6b810n69q0vl26t99wsxmcgp/T/gwt-codeserver-4178506489384599107.tmp/org.codehaus.mojo.Foo/compile-1/war/Foo;
 
Writing extras to 
/var/folders/t3/2t6b810n69q0vl26t99wsxmcgp/T/gwt-codeserver-4178506489384599107.tmp/org.codehaus.mojo.Foo/compile-1/extras/Foo
[INFO]Link succeeded
[INFO]Compilation succeeded -- 7.514s
[INFO] Compile completed in 7961 ms
[ERROR] 2014-02-13 22:33:48.198:INFO:oejs.Server:jetty-8.y.z-SNAPSHOT
[ERROR] 2014-02-13 22:33:48.228:INFO:oejs.AbstractConnector:Started 
SelectChannelConnector@127.0.0.1:9876
[INFO] 
[INFO] The code server is ready.
[INFO] Next, visit: http://localhost:9876/

What is this ERROR trying to tell me? Could it be the culprit?

On Thursday, February 13, 2014 11:08:50 PM UTC-5, Thad Humphries wrote:
>
> I thought I had this working, and I do, but only in one project. Now I'm 
> trying to recreate the magic, and it's not working.
>
> I've an older project that I started running SuperDevMode from a console 
> and DevMode from Eclipse. Since I wanted some features of Tomcat, I 
> switched to running the app as a Remote Java Application. Debugging works. 
> Moreover, when I make a change in a server-only class--like a servlet--the 
> change is there on the very next run.
>
> I want to recreate what I've done and document it for the next guy. 
> Accordingly I
>
> 1) Generate a new project, Foo, using the gwt-maven-plugin archetype.
>
> 2) Add pluginManagement for org.eclipse.m2e to my pom.xml so Eclipse won't 
> squawk about i18n and import the project (see 
> http://stackoverflow.com/questions/16068127/maven-gwt-2-5-1-setup-issue)
>
> 3) Add 
>
>   
>   
>
> to the module file.
>
> 4) Run `mvn clean generate-sources gwt:run` from a console.
>
> 5) Launch the app in the browser then quit DevMode.
>
> 6) Copy target/Foo-1.0-SNAPSHOT to $CATALINA_HOME/webapps/Foo
>
> 7) Run `mvn clean generate-sources gwt:run-codeserver` from a console.
>
> 8) In Eclipse, create a Debug Remote Java Application on Foo and run it.
>
> 9) Open http://localhost:8080/Foo in my browser (Chrome).
>
> 10) Turn Dev Mode On. Compile. Project runs.
>
> If I put a breakpoint in my servlet (GreetingServiceImpl), it breaks in 
> the Eclipse debugger.
>
> 11) Disconnect from Tomcat (in Eclipse). Modify GreetingServiceImpl.java. 
> Restart the remote debug in Eclipse.
>
> 12) In the browser, turn Dev Mode Off, turn Dev Mode On, and Compile
>
> When I call the RPC function, the change made in Step #11 does NOT take 
> effect, though I can see those changes while stepping 
> through GreetingServiceImpl in the Eclipse debugger.
>
>
> What could I be missing? As I said, in my older project (which has gone 
> through some evolution from 2.5.1 to 2.6.0, from DevMode to SuperDevMode 
> and -noserver, from Java 1.5 to 1.6 to 1.7, etc.) server-side changes show 
> on the next run. What might be missing from a archetype generated project 
> and/or from my Eclipse configuration that would cause server-side change to 
> NOT take effect in Foo when they do elsewhere?
>
>

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SuperDevMode and -noserver (Tomcat) debugging

[Thad Humphries]

I thought I had this working, and I do, but only in one project. Now I'm 
trying to recreate the magic, and it's not working.

I've an older project that I started running SuperDevMode from a console 
and DevMode from Eclipse. Since I wanted some features of Tomcat, I 
switched to running the app as a Remote Java Application. Debugging works. 
Moreover, when I make a change in a server-only class--like a servlet--the 
change is there on the very next run.

I want to recreate what I've done and document it for the next guy. 
Accordingly I

1) Generate a new project, Foo, using the gwt-maven-plugin archetype.

2) Add pluginManagement for org.eclipse.m2e to my pom.xml so Eclipse won't 
squawk about i18n and import the project (see 
http://stackoverflow.com/questions/16068127/maven-gwt-2-5-1-setup-issue)

3) Add 

  
  

to the module file.

4) Run `mvn clean generate-sources gwt:run` from a console.

5) Launch the app in the browser then quit DevMode.

6) Copy target/Foo-1.0-SNAPSHOT to $CATALINA_HOME/webapps/Foo

7) Run `mvn clean generate-sources gwt:run-codeserver` from a console.

8) In Eclipse, create a Debug Remote Java Application on Foo and run it.

9) Open http://localhost:8080/Foo in my browser (Chrome).

10) Turn Dev Mode On. Compile. Project runs.

If I put a breakpoint in my servlet (GreetingServiceImpl), it breaks in the 
Eclipse debugger.

11) Disconnect from Tomcat (in Eclipse). Modify GreetingServiceImpl.java. 
Restart the remote debug in Eclipse.

12) In the browser, turn Dev Mode Off, turn Dev Mode On, and Compile

When I call the RPC function, the change made in Step #11 does NOT take 
effect, though I can see those changes while stepping 
through GreetingServiceImpl in the Eclipse debugger.


What could I be missing? As I said, in my older project (which has gone 
through some evolution from 2.5.1 to 2.6.0, from DevMode to SuperDevMode 
and -noserver, from Java 1.5 to 1.6 to 1.7, etc.) server-side changes show 
on the next run. What might be missing from a archetype generated project 
and/or from my Eclipse configuration that would cause server-side change to 
NOT take effect in Foo when they do elsewhere?

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Re: gwt 2.6 SuperDevMode and injected css problem

[Vassilis Virvilis]

Ok.

I tested it and I verified that if you use


DevMod_off is not working (client bundle css resources are not injected) 
on Firefox and in IE while it works in chrome.

DevMod_on works on all 3 browsers I am testing against.

If I comment out collapse-all-properties everything is working.

Tomorrow I will try to create a minimal project that recreates the 
problem and post it as a bug report. Maybe the problem is also UIBinder 
specific. I wasn't able to factor out this parameter...


Vassilis





On 02/11/14 02:16, Colin Alworth wrote:
With Super Dev Mode off, the browser simply loads the compiled code 
from the regular web server, so this suggests that either Super Dev 
Mode is being used as your regular server (and so only one copy of the 
app is available at a time, for the last browser it compiled for), or 
your normal compiled app is being compiled with those browsers turned 
off. The fact that SDM is able to generate code for those browsers 
suggests that the code itself is fine, and that either your project 
simply needs to be recompiled, or properties are set up in your 
.gwt.xml to exclude those browsers. Without seeing code or the running 
app, it is hard to be more specific.



On Sat, Feb 8, 2014 at 11:50 PM, Vassilis Virvilis > wrote:


Hi Colin,

The problem is when DevMod is off. As I said when when DevMod is
on (with compile) everything works in all browsers. However when I
am not developing I would expect that site would be working with
the version of software currently deployed for all browsers and
not only chrome.

Right now I am getting blank pages in firefox and IE.

   Vassilis


On 02/08/14 03:07, Colin Alworth wrote:

Can you confirm that you are hitting the Compile button in
each browser and that the SDM console is indicating that it is
recompiling for each other user agent? It sounds as though you
might be compiling when you start up one browser, then just
turning dev mode on without recompiling in other browsers.

On Friday, February 7, 2014 4:25:18 PM UTC-6, Vassilis
Virvilis wrote:

Helo everybody,

I have enabled super dev mode and it works ok in chrome
but fails in
firefox and internet explorer.

More specifically

I added
 
 
 

in my gwt.xml

My application requires some css to be injected with

 Resources.INSTANCE.css().ensureInjected();

which I do as the first thing in onModuleLoad()

When dev mode is on (the bookmartlet) everything is
working in all
browsers
When dev mode if off only chrome is working. In firefox
and IE css
resources are not injected.

Any ideas?

  Vassilis

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Re: SuperDevMode not so super

[Colin Alworth]

There is a prototype project enabling Eclipse to debug the JS running in 
the browser with sourcemaps - check it out at http://github.com/sdbg/sdbg. 

On Thursday, November 15, 2012 8:46:26 AM UTC-8, Clint Gilbert wrote:
>
> -BEGIN PGP SIGNED MESSAGE- 
> Hash: SHA1 
>
> If I could hook Eclipse up to Firefox or Chrome and step through code, 
> that would make SDM much more workable.  Is that currently possible? 
>
> If so, is it possible to inspect the internal state of an object 
> defined in Java, compiled to JS, and running in a browser VM? 
> Breakpoints and stepping line by line are great, but losing object 
> inspection would be a big step back. 
>
> On 11/14/2012 09:58 PM, Chris Lercher wrote: 
> > On Thursday, November 15, 2012 2:53:37 AM UTC+1, Thomas Broyer 
> > wrote: 
> > 
> > SourceMaps could then be used by your IDE so you could put 
> > breakpoints in your editor window. 
> > 
> > 
> > I can see the potential - it could be big. I do have a few doubts 
> > though: 
> > 
> > 1. Would this also allow me to inspect the internal state of 
> > objects from within my IDE? (Is this even possible?) 2. What about 
> > super-sourced classes, which are - at least in Eclipse - usually 
> > excluded from the build path to avoid error messages (that's 
> > probably the smaller problem, as I imagine, that this could be 
> > taken care of by the IDE plugins) 
> > 
> > 
> > 
> > Embedded browsers, even if using the exact same engine, don't 
> > behave like their "full blown" counterparts (IE, when embedded, 
> > has different rules for switching between IE5.5Quirks/IE7/IE8/etc. 
> > modes for instance) 
> > 
> > 
> > I think, living with these differences in Dev Mode would be ok. 
> > The situation was different back in Hosted Mode's time, because 
> > Super Dev Mode was missing. I believe, that Dev Mode currently has 
> > some important use cases, which Super Dev Mode can't cover (yet?) 
> > For these use cases, the browser differences are often not that 
> > important. 
> > 
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Re: [ERROR] Line XX: Unexpected exception while processing element 'property-provider'... shell failed in doStartup method

[Colin Alworth]

Jens is dead on - several API changes from 2.4/2.5 to 2.6 make it difficult 
for a library to stradle that divide. We'll be shipping a GXT 3.1 beta Real 
Soon Now to enable users to switch to GWT 2.6. Breaking changes include:

   - Changing permutations (ie6 and opera are gone, ie10 was added, note 
   that newer versions of opera are webkit based and do not need their own 
   permutation)
   - Element added new final methods hasClassName and toggleClassName that 
   can't compiled with XElement methods of the same name
   - String utils methods removed, switched to newer version of Guava 
   (which now uses those methods)



On Thursday, February 13, 2014 1:35:32 AM UTC-8, Jens wrote:
>
> Your  Sencha GXT library is most likely not compatible to GWT 2.6. I guess 
> you need to update GXT if possible or go back to GWT 2.4 or 2.5.1 (whatever 
> works).
>
> -- J.
>

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Re: Event Bubbling

[Thomas Broyer]

I think there were examples in the slides for architecturing GWT apps for 
performance at I/O 2010 or 2012.

You'll find a few examples in Cell implementations, and UiRenderer is based it 
too (easier than rolling your own, but it's useful to know what it all means)

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Re: Event Bubbling

[Ed]

Hi Axel,

We abandoned this approach in favor of inner html, where the server takes
care of status back to the client.

For processes that take a bit of time, the server responds to the request
without closing the request so the user has an inkling of progress.

Ed



On Thu, Feb 13, 2014 at 11:25 AM, Axel R  wrote:

> Hi Ed,
>>
> I am looking for a  simple exemple of 'event bubbling'...Just like the one
> you were talking about...an HTMLPanel that has various buttons and I want
> to intercept the clickEvent of each of them...Maybe you could post a little
> of code illustrating how you did it ?
>
> I have tried to find informations but GWT event bubbling is poorly
> documented I think...
>
> Thanks you,
> Axel
>
>
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Re: Event Bubbling

[Axel R]

>
> Hi Ed,
>
I am looking for a  simple exemple of 'event bubbling'...Just like the one 
you were talking about...an HTMLPanel that has various buttons and I want 
to intercept the clickEvent of each of them...Maybe you could post a little 
of code illustrating how you did it ?

I have tried to find informations but GWT event bubbling is poorly 
documented I think...

Thanks you,
Axel


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widgets get disturbed on zoom +/-

[aditi]

After creating a screen in GWT, I tried browser's zoom+/-.
Noticed that, all the widgets in the screen move here/there or get wrap 
from their location. The panels containing widgets like labels, listbox etc 
donot stay arranged as they are expected to be.
 
Also, I see the same behaviour in different screen resolution. Images get 
overlapped, some panels moving out of their boundaries.
 On moduleLoad, the maincontent of the screen is a HTMLpanel that is added 
to RootPanel.
 
Please help.

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Don't know how to fill my datagrid from here.

[pierre laurent]

Hi there,

Need advices regarding a problem adding values to a datagrid.

Project is using hibernate, requestfactory and one to many relations.
I've added a many to one relation in order to grab more datas but i am 
stuck dealing with the results.

In the following code, log.info is showing me that informations are 
correctly filled.

*fiches.getHistofiches**()* is returning a *List*

Everything is fine until there. 


But i am unable to fill my datagrid using driver with a List of proxy. I don't 
know how to proceed.

I could fire another request from histofiches but datas are already available.

Don't know where to use setRowData


May someone help ?


Regards,

Pierre


*Request is fired like*

   ffr.with(fichesDriver.getPaths());
ffr.to(new Receiver() {
  @Override
  public void onSuccess(FichesProxy fiches) {
TllogEditorWorkflow.this.fiches = fiches;
FichesRequest contextf = requestFactory.createFichesRequest();
edit(contextf);
 
  /*  if (fiches.getHistofiches() != null) {
for (HistoFichesProxy p : fiches.getHistofiches())
log.info("visa : " + p.getId().getVisa() + "/ utilcre " + 
p.getId().getUtilcre());
}*/

TllogEditorWorkflow.this.histofiches = fiches.getHistofiches();
HistoFichesRequest contexth = 
requestFactory.createHistoFichesRequest();
edit(contexth);
  }
}).fire();


*Histofiches editor*

public class HistofichesEditor extends Composite implements 
Editor> {
  interface Binder extends UiBinder {
  }

  interface Style extends CssResource {
  }

  interface TableResources extends DataGrid.Resources {
@Source(value = {DataGrid.Style.DEFAULT_CSS, "../DataGridPatch.css"})
DataGrid.Style dataGridStyle();
  }
private class DossierColumn extends Column {
public DossierColumn() {
  super(new TextCell());
}

@Override
public String getValue(HistoFichesProxy object) {
  return 
object.getId().getMetier()+object.getId().getSitegeo()+object.getId().getCptdossier()+object.getId().getNumligne().toString();
}
  }
private class UtilcreColumn extends Column {
public UtilcreColumn() {
  super(new TextCell());
}

@Override
public String getValue(HistoFichesProxy object) {
  return object.getId().getUtilcre();
}
  }
private class DatecreColumn extends Column {
public DatecreColumn() {
  super(new TextCell());
}

@Override
public String getValue(HistoFichesProxy object) {
  return object.getId().getDatecre().toString();
}
  }
private class VisaColumn extends Column {
  public VisaColumn() {
super(new TextCell());
  }

  @Override
  public String getValue(HistoFichesProxy object) {
return object.getId().getVisa().toString();
  }}
@UiFieldDockLayoutPanel dock;
@UiField(provided = true)SimplePager pager = new SimplePager();

  @UiField(provided = true)
  DataGrid tablehisto;

  public HistofichesEditor() {

  tablehisto = new DataGrid(15,
GWT. create(TableResources.class));
initWidget(GWT. 
create(Binder.class).createAndBindUi(this));


Column visaColumn =   new 
VisaColumn();
Column dossierColumn  =   new 
DossierColumn();
Column utilcreColumn  =   new 
UtilcreColumn();
Column datecreColumn  =   new 
DatecreColumn();


tablehisto.addColumn(dossierColumn, "Dossier");
tablehisto.setColumnWidth(dossierColumn, "17ex");

tablehisto.addColumn(utilcreColumn, "Utilcre");
tablehisto.setColumnWidth(utilcreColumn, "15ex");

tablehisto.addColumn(datecreColumn, "Datecre");
tablehisto.setColumnWidth(datecreColumn, "25ex");

tablehisto.addColumn(visaColumn, "Visa");
tablehisto.setColumnWidth(visaColumn, "25ex");
  }}



*ui.xml*



  

  

  

  


  


  

  




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Re: GWT : java.lang.NoSuchFieldError: warningThreshold

[Arshad Shaikh]

Hi Thomas,

Thanks for quick reply, I moved gwt-dev jar at the beginning of classpath 
and tried to build but getting below NPE.

Kindly advise.
Log:
-
   [java] java.lang.NullPointerException
 [java]  at 
com.google.gwt.dev.util.DiskCache.transferToStream(DiskCache.java:185)
 [java]  at 
com.google.gwt.dev.util.DiskCacheToken.writeObject(DiskCacheToken.java:73)
 [java]  at sun.reflect.GeneratedMethodAccessor29.invoke(Unknown Source)
 [java]  at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown 
Source)
 [java]  at java.lang.reflect.Method.invoke(Unknown Source)
 [java]  at java.io.ObjectStreamClass.invokeWriteObject(Unknown Source)
 [java]  at java.io.ObjectOutputStream.writeSerialData(Unknown Source)
 [java]  at java.io.ObjectOutputStream.writeOrdinaryObject(Unknown 
Source)
 [java]  at java.io.ObjectOutputStream.writeObject0(Unknown Source)
 [java]  at java.io.ObjectOutputStream.defaultWriteFields(Unknown 
Source)
 [java]  at java.io.ObjectOutputStream.defaultWriteObject(Unknown 
Source)
 [java]  at 
com.google.gwt.dev.javac.CachedCompilationUnit.writeObject(CachedCompilationUnit.java:222)
 [java]  at sun.reflect.GeneratedMethodAccessor31.invoke(Unknown Source)
 [java]  at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown 
Source)
 [java]  at java.lang.reflect.Method.invoke(Unknown Source)
 [java]  at java.io.ObjectStreamClass.invokeWriteObject(Unknown Source)
 [java]  at java.io.ObjectOutputStream.writeSerialData(Unknown Source)
 [java]  at java.io.ObjectOutputStream.writeOrdinaryObject(Unknown 
Source)
 [java]  at java.io.ObjectOutputStream.writeObject0(Unknown Source)
 [java]  at java.io.ObjectOutputStream.writeObject(Unknown Source)
 [java]  at 
com.google.gwt.dev.javac.PersistentUnitCache$6.run(PersistentUnitCache.java:492)
 [java]  at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown 
Source)
 [java]  at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown 
Source)
 [java]  at java.lang.Thread.run(Unknown Source)
-

Thanks,
Arshad


On Thursday, February 13, 2014 5:30:08 PM UTC+5:30, Arshad Shaikh wrote:
>
> Hi,
>
> I am facing 'Unexpected internal compiler error' while creating GWT Build.
> Tried changing the order of class paths of jars but didn't work.
> I have upgraded GWT from 3.1 to 4.0 and using Tomcat.
>
> Can someone please advise on this issue.
>
> - 
> Log 
> -
> *[ERROR] Unexpected internal compiler error*
> * [java] java.lang.NoSuchFieldError: warningThreshold*
> * [java] at 
> com.google.gwt.dev.javac.JdtCompiler$1.(JdtCompiler.java:505)*
> * [java] at 
> com.google.gwt.dev.javac.JdtCompiler.getStandardCompilerOptions(JdtCompiler.java:503)*
> * [java] at 
> com.google.gwt.dev.javac.JdtCompiler.getCompilerOptions(JdtCompiler.java:533)*
> * [java] at 
> com.google.gwt.dev.javac.JdtCompiler.doCompile(JdtCompiler.java:878)*
> * [java] at 
> com.google.gwt.dev.javac.CompilationStateBuilder$CompileMoreLater.compile(CompilationStateBuilder.java:284)*
> * [java] at 
> com.google.gwt.dev.javac.CompilationStateBuilder.doBuildFrom(CompilationStateBuilder.java:511)*
> * [java] at 
> com.google.gwt.dev.javac.CompilationStateBuilder.buildFrom(CompilationStateBuilder.java:434)*
> * [java] at 
> com.google.gwt.dev.javac.CompilationStateBuilder.buildFrom(CompilationStateBuilder.java:420)*
> * [java] at 
> com.google.gwt.dev.cfg.ModuleDef.getCompilationState(ModuleDef.java:485)*
> * [java] at 
> com.google.gwt.dev.Precompile.precompile(Precompile.java:241)*
> * [java] at 
> com.google.gwt.dev.Precompile.precompile(Precompile.java:223)*
> * [java] at 
> com.google.gwt.dev.Precompile.precompile(Precompile.java:139)*
> * [java] at com.google.gwt.dev.Compiler.run(Compiler.java:167)*
> * [java] at com.google.gwt.dev.Compiler.run(Compiler.java:132)*
> * [java] at com.google.gwt.dev.Compiler$1.run(Compiler.java:99)*
> * [java] at 
> com.google.gwt.dev.CompileTaskRunner.doRun(CompileTaskRunner.java:55)*
> * [java] at 
> com.google.gwt.dev.CompileTaskRunner.runWithAppropriateLogger(CompileTaskRunner.java:50)*
> * [java] at com.google.gwt.dev.Compiler.main(Compiler.java:106)*
>
> 
>
> Thanks,
> Arshad
>

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Re: Making an RPC call after a JSNI callback

[Thomas Broyer]

On Thursday, February 13, 2014 2:54:03 PM UTC+1, Steve wrote:
>
> There's an exportWAV within Recorder.js which returns a blob (see below) 
> which I could hold in a JavaScriptObject, would that be sufficient? however 
> i still don't know how to send this object to the server and then allow 
> other clients to retrieve the blob and play it. Are you suggesting that I 
> shouldn't send the wav/ogg to the server using RPC either?
>

That's right. You should use an XMLHttpRequest which can send a Blob 
without prior conversion 
needed: http://www.w3.org/TR/XMLHttpRequest/#dom-xmlhttprequest-send
As I said, you'd have to call the send() method using JSNI, given that 
com.google.gwt.xhr.client.XMLHttpRequest only exposes send() without 
argument or with a String.
You could also possibly use a FormData if you want/need to send other data 
with your "file".
 

>
> rec.exportWAV([callback][, type])
>
> *This will generate a Blob object containing the recording in WAV format. 
> The callback will be called with the Blob as its sole argument. If a 
> callback is not specified, the default callback (as defined in the config) 
> will be used. If no default has been set, an error will be thrown.*
>
> *In addition, you may specify the type of Blob to be returned (defaults to 
> 'audio/wav').*
>
> On Thursday, 13 February 2014 13:11:36 UTC, RyanZA wrote:
>>
>> You definitely don't want to be sending raw audio over the web to your 
>> server - it's huge. What you want to do is take that raw audio, convert it 
>> to an ogg or similar using something like 
>> https://github.com/muaz-khan/WebRTC-Experiment/tree/master/ffmpeg
>> Then you'd take the ogg output and upload it to your server using an http 
>> post as converting the ogg to base64 would probably use a lot of ram.
>>
>> GWT-RPC to transfer raw wav data is just right out
>>
>> On Wednesday, February 12, 2014 8:12:48 PM UTC+2, Steve wrote:
>>>
>>> Would using a JSONObject to send the buffers to the server help?
>>>
>>> e.g.
>>>
>>> JSONObject jsonValue = new JSONObject(myJSObject);
>>>
>>>
>>> and then using the following to convert the JSON object back?
>>>
>>> JavaScriptObject jsObject = jsonValue.getJavaScriptObject();
>>>
>>>

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Re: Making an RPC call after a JSNI callback

[Steve]

There's an exportWAV within Recorder.js which returns a blob (see below) 
which I could hold in a JavaScriptObject, would that be sufficient? however 
i still don't know how to send this object to the server and then allow 
other clients to retrieve the blob and play it. Are you suggesting that I 
shouldn't send the wav/ogg to the server using RPC either?

rec.exportWAV([callback][, type])

*This will generate a Blob object containing the recording in WAV format. 
The callback will be called with the Blob as its sole argument. If a 
callback is not specified, the default callback (as defined in the config) 
will be used. If no default has been set, an error will be thrown.*

*In addition, you may specify the type of Blob to be returned (defaults to 
'audio/wav').*

On Thursday, 13 February 2014 13:11:36 UTC, RyanZA wrote:
>
> You definitely don't want to be sending raw audio over the web to your 
> server - it's huge. What you want to do is take that raw audio, convert it 
> to an ogg or similar using something like 
> https://github.com/muaz-khan/WebRTC-Experiment/tree/master/ffmpeg
> Then you'd take the ogg output and upload it to your server using an http 
> post as converting the ogg to base64 would probably use a lot of ram.
>
> GWT-RPC to transfer raw wav data is just right out
>
> On Wednesday, February 12, 2014 8:12:48 PM UTC+2, Steve wrote:
>>
>> Would using a JSONObject to send the buffers to the server help?
>>
>> e.g.
>>
>> JSONObject jsonValue = new JSONObject(myJSObject);
>>
>>
>> and then using the following to convert the JSON object back?
>>
>> JavaScriptObject jsObject = jsonValue.getJavaScriptObject();
>>
>>

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Re: Making an RPC call after a JSNI callback

[RyanZA]

You definitely don't want to be sending raw audio over the web to your 
server - it's huge. What you want to do is take that raw audio, convert it 
to an ogg or similar using something like 
https://github.com/muaz-khan/WebRTC-Experiment/tree/master/ffmpeg
Then you'd take the ogg output and upload it to your server using an http 
post as converting the ogg to base64 would probably use a lot of ram.

GWT-RPC to transfer raw wav data is just right out

On Wednesday, February 12, 2014 8:12:48 PM UTC+2, Steve wrote:
>
> Would using a JSONObject to send the buffers to the server help?
>
> e.g.
>
> JSONObject jsonValue = new JSONObject(myJSObject);
>
>
> and then using the following to convert the JSON object back?
>
> JavaScriptObject jsObject = jsonValue.getJavaScriptObject();
>
>

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Re: GWT : java.lang.NoSuchFieldError: warningThreshold

[Thomas Broyer]

You must have a version of JDT (aka ECJ) earlier in the classpath, that 
conflicts with the one shipped within gwt-dev.
It's very unlikely that this dependency is used for client-side code (in 
generators), so the best way is to make sure you only include client-side 
dependencies in your class path when invoking GWT (the Compiler, DevMode, 
SuperDevMode, or unit tests). If that's not possible (it's always possible, 
so let's rather say: if that's not easy), then move gwt-dev at the very 
beginning of your classpath.

On Thursday, February 13, 2014 1:00:08 PM UTC+1, Arshad Shaikh wrote:
>
> Hi,
>
> I am facing 'Unexpected internal compiler error' while creating GWT Build.
> Tried changing the order of class paths of jars but didn't work.
> I have upgraded GWT from 3.1 to 4.0 and using Tomcat.
>
> Can someone please advise on this issue.
>
> - 
> Log 
> -
> *[ERROR] Unexpected internal compiler error*
> * [java] java.lang.NoSuchFieldError: warningThreshold*
> * [java] at 
> com.google.gwt.dev.javac.JdtCompiler$1.(JdtCompiler.java:505)*
> * [java] at 
> com.google.gwt.dev.javac.JdtCompiler.getStandardCompilerOptions(JdtCompiler.java:503)*
> * [java] at 
> com.google.gwt.dev.javac.JdtCompiler.getCompilerOptions(JdtCompiler.java:533)*
> * [java] at 
> com.google.gwt.dev.javac.JdtCompiler.doCompile(JdtCompiler.java:878)*
> * [java] at 
> com.google.gwt.dev.javac.CompilationStateBuilder$CompileMoreLater.compile(CompilationStateBuilder.java:284)*
> * [java] at 
> com.google.gwt.dev.javac.CompilationStateBuilder.doBuildFrom(CompilationStateBuilder.java:511)*
> * [java] at 
> com.google.gwt.dev.javac.CompilationStateBuilder.buildFrom(CompilationStateBuilder.java:434)*
> * [java] at 
> com.google.gwt.dev.javac.CompilationStateBuilder.buildFrom(CompilationStateBuilder.java:420)*
> * [java] at 
> com.google.gwt.dev.cfg.ModuleDef.getCompilationState(ModuleDef.java:485)*
> * [java] at 
> com.google.gwt.dev.Precompile.precompile(Precompile.java:241)*
> * [java] at 
> com.google.gwt.dev.Precompile.precompile(Precompile.java:223)*
> * [java] at 
> com.google.gwt.dev.Precompile.precompile(Precompile.java:139)*
> * [java] at com.google.gwt.dev.Compiler.run(Compiler.java:167)*
> * [java] at com.google.gwt.dev.Compiler.run(Compiler.java:132)*
> * [java] at com.google.gwt.dev.Compiler$1.run(Compiler.java:99)*
> * [java] at 
> com.google.gwt.dev.CompileTaskRunner.doRun(CompileTaskRunner.java:55)*
> * [java] at 
> com.google.gwt.dev.CompileTaskRunner.runWithAppropriateLogger(CompileTaskRunner.java:50)*
> * [java] at com.google.gwt.dev.Compiler.main(Compiler.java:106)*
>
> 
>
> Thanks,
> Arshad
>

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Re: No-compromise AJAX

[Thomas Broyer]

>From http://www.gwtproject.org/makinggwtbetter.html

no-compromise AJAXWe want great results, where "great" is defined by how 
much it benefits end users. Sometimes there are conflicts between what is 
easy for us developers and what benefits end users the most. When the two 
are in conflict, end user experience almost always wins. 

We definitely do not view development in GWT as a form of compromise. We 
firmly believe that GWT should generate better JavaScript code than you 
would write by hand, and will generally choose to avoid making concessions 
to convenience if they hurt the performance of the resulting AJAX code. 
Does that help?


On Thursday, February 13, 2014 1:00:24 PM UTC+1, Edu Melo wrote:
>
> Good morning,
>
> I've been using GWT with a superficial knowledge for some time, but just 
> now I took out some time to deepened my knowledge, and I've been had a 
> doubt that could not find the answer searching the web.
> So, please, someone could give me a good definition of what "no-compromise 
> AJAX" means? I can't figure out what this "compromise" referes about.
>
> If that is something obvious, please excuse me.
>
> Thank you a lot
>

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No-compromise AJAX

[Edu Melo]

Good morning,

I've been using GWT with a superficial knowledge for some time, but just 
now I took out some time to deepened my knowledge, and I've been had a 
doubt that could not find the answer searching the web.
So, please, someone could give me a good definition of what "no-compromise 
AJAX" means? I can't figure out what this "compromise" referes about.

If that is something obvious, please excuse me.

Thank you a lot

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GWT : java.lang.NoSuchFieldError: warningThreshold

[Arshad Shaikh]

Hi,

I am facing 'Unexpected internal compiler error' while creating GWT Build.
Tried changing the order of class paths of jars but didn't work.
I have upgraded GWT from 3.1 to 4.0 and using Tomcat.

Can someone please advise on this issue.

- 
Log 
-
*[ERROR] Unexpected internal compiler error*
* [java] java.lang.NoSuchFieldError: warningThreshold*
* [java] at 
com.google.gwt.dev.javac.JdtCompiler$1.(JdtCompiler.java:505)*
* [java] at 
com.google.gwt.dev.javac.JdtCompiler.getStandardCompilerOptions(JdtCompiler.java:503)*
* [java] at 
com.google.gwt.dev.javac.JdtCompiler.getCompilerOptions(JdtCompiler.java:533)*
* [java] at 
com.google.gwt.dev.javac.JdtCompiler.doCompile(JdtCompiler.java:878)*
* [java] at 
com.google.gwt.dev.javac.CompilationStateBuilder$CompileMoreLater.compile(CompilationStateBuilder.java:284)*
* [java] at 
com.google.gwt.dev.javac.CompilationStateBuilder.doBuildFrom(CompilationStateBuilder.java:511)*
* [java] at 
com.google.gwt.dev.javac.CompilationStateBuilder.buildFrom(CompilationStateBuilder.java:434)*
* [java] at 
com.google.gwt.dev.javac.CompilationStateBuilder.buildFrom(CompilationStateBuilder.java:420)*
* [java] at 
com.google.gwt.dev.cfg.ModuleDef.getCompilationState(ModuleDef.java:485)*
* [java] at 
com.google.gwt.dev.Precompile.precompile(Precompile.java:241)*
* [java] at 
com.google.gwt.dev.Precompile.precompile(Precompile.java:223)*
* [java] at 
com.google.gwt.dev.Precompile.precompile(Precompile.java:139)*
* [java] at com.google.gwt.dev.Compiler.run(Compiler.java:167)*
* [java] at com.google.gwt.dev.Compiler.run(Compiler.java:132)*
* [java] at com.google.gwt.dev.Compiler$1.run(Compiler.java:99)*
* [java] at 
com.google.gwt.dev.CompileTaskRunner.doRun(CompileTaskRunner.java:55)*
* [java] at 
com.google.gwt.dev.CompileTaskRunner.runWithAppropriateLogger(CompileTaskRunner.java:50)*
* [java] at com.google.gwt.dev.Compiler.main(Compiler.java:106)*


Thanks,
Arshad

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Re: Multi-module maven project with GWT entry point and war creation in separate module

[Juan Pablo Gardella]

See https://github.com/tbroyer/gwt-maven-archetypes


2014-02-13 6:38 GMT-03:00 Federico De Faveri :

> HI,
> It is possible to have a multi-module maven project where the main GWT
> application is in a module A and the war creation is done in module B?
>
> Any example or suggestion how to do that?
>
> --
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>

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Multi-module maven project with GWT entry point and war creation in separate module

[Federico De Faveri]

HI,
It is possible to have a multi-module maven project where the main GWT 
application is in a module A and the war creation is done in module B?

Any example or suggestion how to do that?

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Re: [ERROR] Line XX: Unexpected exception while processing element 'property-provider'... shell failed in doStartup method

[Jens]

Your  Sencha GXT library is most likely not compatible to GWT 2.6. I guess 
you need to update GXT if possible or go back to GWT 2.4 or 2.5.1 (whatever 
works).

-- J.

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Re: native Drag n Drop support

[Thomas Broyer]

GWT supports the native drag and drop events in browsers where they are 
supported.
 
This is rather low-level though.
I think there are things in GwtQuery that enhance some GWT widgets with 
drag-and-drop, if you need something higher-level. I don't use GwtQuery 
though, so I might be wrong.

To answer you second question, gwt-dnd is not a wrapper, it's "pure GWT"; 
implementing (AFAIK) drag and drop using mousedown/mousemove/mouseup events.

On Thursday, February 13, 2014 9:42:05 AM UTC+1, Malik Farhan wrote:
>
> Is there native Drag n Drop support in GWT because I couldn't find any in 
> showcase.
> If not then is there any Drag n drop support (drang n drop with 
> multi-select between 2 trees) which is written by extending pure GWT.
> I found gwt-dnd but i dont know if its a jS wrapper or a pure GWT 
> extension.
>
>

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Re: I am getting ClassCastException only on production code but not on DevMode!

[Thomas Broyer]

Put a breakpoint on that throw line and look at the jsFunction.
Alternatively, possibly look at the stacktrace of the 'e' exception.

On Thursday, February 13, 2014 8:43:08 AM UTC+1, Mohammad Al Quraian wrote:
>
> Hi,
>
> I am developing multi-module project, each project is by its own a GWT 
> project. 2 of these project throw these exception when I run them. The 
> exception is:
> Uncaught java.lang.RuntimeException: java.lang.ClassCastException 
>
> The javascript code that throw that is:
> function 
> com_google_gwt_core_client_impl_Impl_entry__Lcom_google_gwt_core_client_JavaScriptObject_2Lcom_google_gwt_core_client_JavaScriptObject_2(jsFunction){
>   return function(){
> try {
>   return 
> com_google_gwt_core_client_impl_Impl_entry0__Ljava_lang_Object_2Ljava_lang_Object_2Ljava_lang_Object_2Ljava_lang_Object_2(jsFunction,
>  
> this, arguments);
> }
>  catch (e) {
>   throw e;
> }
>   }
>   ;
> }
>
> They are all maven projects with the same structure and dependencies, the 
> home.xml files are similar. I can't figure out what's wrong, especially 
> because they run fine on devmode. The exception happens on all major 
> browsers.
>
> Any idea what's going on?
>

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[ERROR] Line XX: Unexpected exception while processing element 'property-provider'... shell failed in doStartup method

[Praveen K Nair]

Hi,

I am having trouble in starting my Web Application created using GWT 
Platform.  I am using eclipse 4.3 with GWT 2.6.0 along with Maven.  I have 
imported a project which is basically developed using GWT 2.4 and Maven 
automatically binds all libraries to 2.4 version when I do mvn clean 
install command.

My Current Environment to which I have includes Eclipse 4.3, JDK 1.7, GWT 
2.6.0, Maven.  And, I am trying to import a project which is built using 
JDK 1.6 & GWT 2.4.0.  When I do a clean from Eclipse, it automatically maps 
to GWT 2.6 version and to JDK 1.6.  But, when I start the application, it 
is throwing the below error.  

I have already tried:

   - Reinstalling GWT Plugin for Eclipse
   - Cleaning the build and rebuild the whole project
   - Tried a Maven clean install for the project
   - Restarted the eclipse.

Still no luck.  Any clue on what to do next?  Please help me here.

*Error Details:*
Loading modules
   com.companyname.division.prodshortname.prodname
  Loading inherited module 
'com.companyname.division.prodshortname.prodname'
 Loading inherited module 'com.sencha.gxt.ui.GXT'
Loading inherited module 'com.sencha.gxt.data.Data'
   Loading inherited module 'com.sencha.gxt.core.Core'
  [ERROR] Line 70: Unexpected exception while processing 
element 'property-provider'
com.google.gwt.dev.jjs.InternalCompilerException: Unexpected error during 
visit.
..
..
..
..
[ERROR] shell failed in doStartup method


Thanks,
*Praveen*

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native Drag n Drop support

[Malik Farhan]

Is there native Drag n Drop support in GWT because I couldn't find any in 
showcase.
If not then is there any Drag n drop support (drang n drop with 
multi-select between 2 trees) which is written by extending pure GWT.
I found gwt-dnd but i dont know if its a jS wrapper or a pure GWT extension.

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