date:20101101


On 1 nov, 11:54, sith fedorov1...@gmail.com wrote:
 Hello all.

 I have trouble with enums in the EntityProxy. Is it possible to have
 enum fileds in the my EntityProxy interface?

It's a known bug: 
http://code.google.com/p/google-web-toolkit/issues/detail?id=5448

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Re: Window 7 IE8 Drop Down List Boxes open problem

2010-11-01 Thread Nathan Wells

Do you have a snippet of code that can reproduce this problem? this
sounds like a browser issue to me.

On Oct 28, 6:20 am, skippy al.leh...@fisglobal.com wrote:
 In this configuration, the drop down list boxes open with the top out
 of the top of the browser and no scrollBar.

 GWT 2.0.4

 Has anyone else seen this?
 Any chanse for a 2.0.5 fix?

 Thanks

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When targeting App Engine it isn't developer productivity I am so concerned
about but rather user experience as well as cascading failures caused by an
initial request failure should the additional time required to fire up
Spring DI cause the initial request to go over the allotted total time as
per the request quota; Google will throttle back starting up new servers to
service requests. Like I said previously, this causes cascading failures.

My mantra for targeting App Engine is Lean Mean!

Jeff

On Mon, Nov 1, 2010 at 1:32 AM, Stephen Haberman
step...@exigencecorp.comwrote:

Hi Shawn,

Thanks for the links.

Moving off JDO and Spring MVC (the web framework, not DI) seemed to be
the biggest startup time wins, which is in line with my assertion that
DI itself is not typically the bottleneck.

That being said, the streamhead link:

http://www.streamhead.com/google-appengine-java-loading-request-analysis/

Was the most interesting because he truly did DI/no-DI comparison
(trusting his approach anyway), and saw base DI adding 1s overhead.

That is more than I would have guessed, but given it's Spring, I guess
I can believe it.

I do enjoy seeing startup time highlighted--way too many pointy haired
managers (or architects) don't think 10s+, 30s+, 60s+ app startups times
affect their developers' productivity. It's terribly frustrating.

Thanks again,
Stephen

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JDBC error when implementing RPC

2010-11-01 Thread Addude

Hi,

I  have an app that connects to MySQL on the server side, and it works
as I have tested it using a separate class.  However when I try to
send the data to the client via RPC I get the following error:

java.lang.ClassNotFoundException: com.mysql.jdbc.Driver

when I am running the web app using eclipse (in host mode).
I have made sure that mysql-connector-java-5.1.13-bin.jar is in my
build path.
Can someone please give me some help please?

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for(;;) with 2.01

2010-11-01 Thread marcusucubi

Hi,

I had a loop (using a for(;;) {} ) in my GWT code.

When I moved to 2.01, the loop acted weird. (the function with the
loop would always return false, when true was also possible.)

I changed the loop to a do{}while(true); loop and it worked fine.

Sorry I don't have a sample code to demo, but I thought it might be
helpful to share.  cheers,

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Re: Announcing GWT 2.1

2010-11-01 Thread shinderahulv

These mail r been coming to me and I am not a part of this.
Please take a note of this.
Sent on my BlackBerry® from Vodafone

-Original Message-
From: Duong BaTien duong.bat...@gmail.com
Sender: google-web-toolkit@googlegroups.com
Date: Sun, 31 Oct 2010 08:26:38 
To: google-web-toolkit@googlegroups.com
Reply-To: google-web-toolkit@googlegroups.com
Subject: Re: Announcing GWT 2.1

Hi:

Good to know your experience with Roo and the light weight approach.

A best-practiced example of RequestFactory with GIN at GWT side and
GUICE at server side may be what a mortal developer is looking for. It
is even better with Objectify if Jeff does it.

Thanks
BaTien

On Sun, 2010-10-31 at 02:30 -0700, Thomas Broyer wrote:

 On 30 oct, 23:15, Jeff Schwartz jefftschwa...@gmail.com wrote:
  Excellent! Thank you for the information. I still however have to wait until
  support for DAOs  embeded objects is implemented in the MVP framework (I am
  using Objectify for my ORM as well ass a DAO) before I can cut over.

  I am also concerned about the apparent reliance on Roo to generate the
  boilerplate code. It appears that Google is very much behind this combo.

 We've been prototyping with RequestFactory for months and haven't ever
 used Roo (our backend is Morphia+MongoDB, not too far from Objectify)

  It
  isn't that I have anything against Roo, DI or generated code for that matter
  but I would have preferred a leaner solution.

 AFAIK, Roo is only a dev tool to generate and maintain boilerplate
 code. There's nothing related to Roo in the generated code (have a
 look at the Expenses sample, the domain objects and all Scaffold*
 classes are those generated by Roo).

 RequestFactory goes against DRY as you have interfaces extending
 EntityProxy on the client-side, and whatever on the server-side; but
 it's lighter weight than e.g. GWT-RPC at runtime: lighter payload
 going on the wire (in most cases, and particularly on upload), and
 much much lighter and faster on the client-side as parsing the payload
 is just a matter of JSON.parse()

  Applications targeting App
  Engine already experience enough latency on start-up and I am afraid that DI
  will just make matters worse;

 Huh!?!

 Could you explain to me how DI slows things down? It's merely about
 moving the place where you new objects, I don't see where there'd be
 overhead re. start-up time.
 Noteworthy: Roo generates GWT apps that use GIN for DI on the client
 side, but there's no DI at all on the server-side. And DI is
 absolutely not a requirement; only a best practice (that I'd encourage
 *anyone* to follow)

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RPC serialisation problem

2010-11-01 Thread stephan.beu...@googlemail.com

Hello,

I need some hints to improve the speed of serialisation.

On server side a make a call to a database to get data from it. This
is quiet fast, needs about 2 seconds to get 68000 entries.
When sending the data to the client to display it in a table, I
seperated the entries to transfer it in pieces of 100 elements to the
client.

My object to serialize looks like this:

public class ObjectNameDto implements IsSerializable {

/**
 *
 */
private static final long serialVersionUID = 5445630429242485561L;
private int id;
private String name;

public ObjectNameDto() {
}

public ObjectNameDto(int id) {
this.id = id;
}

/**
 * @return the id
 */
public int getObjectNameId() {
return id;
}

/**
 * @param id
 *the id to set
 */
public void setObjectNameId(int id) {
this.id = id;
}

/**
 * @return the name
 */
public String getName() {
return name;
}

/**
 * @param name
 *the name to set
 */
public void setName(String name) {
this.name = name;
}

/**
 * Element count.
 *
 * @return the int
 */
public static int elementCount() {
return 2;
}
}

My custom field serialiser is this one:

public class ObjectNameDto_CustomFieldSerializer {

public static ObjectNameDto initiate(SerializationStreamReader
reader) throws SerializationException {

return new ObjectNameDto();

}

public static void serialize(SerializationStreamWriter writer,
ObjectNameDto instance)
throws SerializationException {
if (instance == null) {
throw new NullPointerException(ObjectNameDto object is 
null);
} else {
writer.writeInt(instance.getObjectNameId());
writer.writeString(instance.getName());
}
}

public static void deserialize(SerializationStreamReader reader,
ObjectNameDto instance)
throws SerializationException {
instance.setObjectNameId(reader.readInt());
instance.setName(reader.readString());
}
}

The serialisation for 100 elements takes 4 seconds and thats too much
time.

How can I improve the speed of serialisation from client to server?

Thanks for any hints.

Stephan

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Re: Nested Views in MVP


Hello David,

I am very excited about the GWT 2.1 release, and planning to use it
for a new upcoming project.
I have been following and studying the MVP for quite a while now and
experimenting with milestone releases.

Just wanted to share some of my thoughts:

I personally find the name Activity a bit confusing.
I've heard it is more popular in Android community.
to me,  it is MVP, P referring to Presenter (not Activity!)
looking at the comments in source code, and tutorials, one can see
Presenter and Activity are used interchangeably.
eg: An activity in GWT 2.1 is analogous to a presenter in MVP
terminology. from MVP tutorial.

now for the first time in your comment i read:

 2) There is not necessarily a 1:1 correspondence between Activities
 and presenters. Your Activity might instantiate multiple presenters
 and corresponding views.

I did not know that, as it was not explicitly stated anywhere.
so some clarification on that would really help.
btw where does the name Activity come from ?

about nested views,
I was hoping that the new MVP framework address this,
as I was planning to use that extensively.
your solutions are interesting, I will try to implement them.
any basic tutorial on composite views would be great.

thank you for GWT 2.1 !

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Re: Code for sample Contacts application out of date

2010-11-01 Thread Dan

Hi,

On Oct 29, 1:46 pm, cri chuck.irvine...@gmail.com wrote:
 Since this is a significant piece of new functionality, i.e. MVP, is
 there any chance that this application will be updated soon,
 especially the downloadable project?

I agree - I've been reading the page which describes the HelloWorld
application, using Activities and Places:

http://code.google.com/webtoolkit/doc/latest/DevGuideMvpActivitiesAndPlaces.html

This makes sense by itself, but I'm confused about some parts. For
example, how do I generate and listen for events on the event bus
using the new framework. Presumably it's not the same as the Contacts
application since HandlerManager is deprecated. If the Contacts
application could be updated to use activities and places, it would
help answer a lot of my questions. I'm really interested about
learning the new framework and all it's new features. Keep up the good
work!

Thanks,

Dan Scott

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No GWT Developer Plugin for Chrome on OSX

2010-11-01 Thread SteveG

See subject.

Why is this - I thought Google was running all Macs now - and this
product is missing the developer plugin for Chrome?

Curious if this is something in progress or should I just continue to
use Safari/Firefox ?

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Cannot get satisfactory IE6 PNG support for sprites

2010-11-01 Thread Carter Simmons

I cannot get PNGs to work in IE6.  I've tried every hackaround out
there from DD_belatedPNG to iepngfix.htc and beyond without joy.  DD
was the closest to working but it was not properly positioning all the
elements it was fixing and I cannot find a workaround.  For some
reason, certain elements were positioned 0,0 in the top left, while
others worked fine (?).  Oh well, I'm beyond that and just want to
beat IE6 into submission any way I can.

So, my current train of thought is to do the following somehow, and
I'm wondering if it's possible or someone has any other suggestions.

1. Disable sprites for IE6 and use individual images
2. During the build process, generate a special PNG8 for IE6
3. Every other browser still gets full fancy shtuff

I understand that IE6/7 are the same thing as far as GWT is concerned,
so if a solution targets both IE6/7 I'd still be interested in hearing
it.

I'm just tired of thinking about this issue and want to make it go
away.  I don't care how, just as long as it works, doesn't take up any
more of my time, and affects other browsers as little as possible.

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Re: Announcing GWT 2.1

2010-11-01 Thread shinderahulv

These mails being mark to me

Kindly avoid
Sent on my BlackBerry® from Vodafone

-Original Message-
From: Stephen Haberman step...@exigencecorp.com
Sender: google-web-toolkit@googlegroups.com
Date: Sun, 31 Oct 2010 23:32:03 
To: google-web-toolkit@googlegroups.com
Reply-To: google-web-toolkit@googlegroups.com
Subject: Re: Announcing GWT 2.1

Hi Shawn,

Thanks for the links.

Moving off JDO and Spring MVC (the web framework, not DI) seemed to be
the biggest startup time wins, which is in line with my assertion that
DI itself is not typically the bottleneck.

That being said, the streamhead link:

 http://www.streamhead.com/google-appengine-java-loading-request-analysis/

Was the most interesting because he truly did DI/no-DI comparison
(trusting his approach anyway), and saw base DI adding 1s overhead.

That is more than I would have guessed, but given it's Spring, I guess
I can believe it.

I do enjoy seeing startup time highlighted--way too many pointy haired
managers (or architects) don't think 10s+, 30s+, 60s+ app startups times
affect their developers' productivity. It's terribly frustrating.

Thanks again,
Stephen

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Re: Announcing GWT 2.1

2010-11-01 Thread shinderahulv

Ur mails r getting wrongly marked to me.
Please avoid
Sent on my BlackBerry® from Vodafone

-Original Message-
From: Thomas Broyer t.bro...@gmail.com
Sender: google-web-toolkit@googlegroups.com
Date: Sun, 31 Oct 2010 09:39:42 
To: Google Web Toolkitgoogle-web-toolkit@googlegroups.com
Reply-To: google-web-toolkit@googlegroups.com
Subject: Re: Announcing GWT 2.1

On 31 oct, 13:40, Jeff Schwartz jefftschwa...@gmail.com wrote:
 Thomas,

 It is the 'I' in DI that I reflected on: Injection takes cpu cycles and on
 App Engine server cpu cycles are severely restricted by numerous quotas; the
 penalty for exceeding them cause cascading conditions of failure. If you
 aren't familiar with App Engine hosting and its quotas perhaps you should
 read up on it.

I never used AppEngine so I apologies for not knowing the quotas and
what impact could DI have.

 As for ROO not generating server side DI as part of its tooling in STS when
 used with GWT I will have to check that out for myself; I believe I had read
 that it generates a server side application context configuration file and
 if that is the case then I'd like to know why it would do that if DI wasn't
 employed on the server. If that is the case then DI would certainly cause
 heightened latency causing an increase in 500 errors on App Engine virtual
 server cold starts.

Not having tried Roo, I can only talk about what's visible in the
Expenses sample:
http://code.google.com/p/google-web-toolkit/source/browse/trunk/samples/expenses/src/main/
and what I understand from Roo's addon-gwt source code:
https://fisheye.springsource.org/browse/spring-roo/addon-gwt

And I don't see DI here (on the server-side)

 As for DI being a best practice (that you'd encourage *anyone* to follow)
 well that is your opinion that is not shared by everyone. I encourage a more
 conservative approach to any engineering problem - use the right set of
 tools at the right time.

Sure. I maintain what I said though: DI is a pattern that makes code
easier to test and to maintain. And I really mean DI, as a pattern,
I'm not talking about any tool here; you're free to implement DI
yourself, it doesn't necessarily means Guice or Spring or JavaEE 6
or whatever (which means you could do it with very low overhead, if
any). I found DI really improved software quality overall.

That being said, let me paraphrase you: I am open minder. We
developers have to be :) and as such I would very
much like to be proven wrong on all these counts.

 As for Huh!?! That is something best saved for your friends on Facebook.
 This is a technical news group where such antics of conversation are not
 appreciated regardless of difference of opinion.

Sorry, I'm not a native English speaker/writer, so I probably misuse
idioms sometimes.

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Re: Re: lib-gwt-svg 0.5 for GWT 2.1 is available

These mail are been wrongly marked to mePlease avoid.RegardsRahul ShindeOn Mon, 
01 Nov 2010 14:09:38 +0530 Sorinel C wrotegt;This is a great news -- I'll give 
it a try 
...gt;gt;Cheers!gt;http://ui-programming.blogspot.com/gt;gt;gt;-- gt;You 
received this message because you are subscribed to the Google Groups Google 
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Role based Security in GWT: how to implement ?

Hello everyone,

I have some questions regarding implementing security in GWT.

It's a typical use case:
let's say in your app, users can have different roles,
and you want to show only the relevant part of the UI, based on their
role.

and I am talking about more than 3 roles.
eg:(Customer, BranchManager, Teller, CEO, System Admin)
(after all GWT is for larger apps, right ? )

on the back-end, i am planning to use Spring, and i'm going to use
Spring Security,
for authentication, fine-grained authorization, (method level, ACL),
it is a very mature framework and annotation based.

however, when it comes to the front-end UI, I don't know what is the
recommended practice to incorporate role-based security in MVP. (i
don't want the security checks get scattered across all methods on the
client, bloated code, if statements everywhere, security is a cross-
cutting concern, right? should i put it in the Activity/Presenter ?)

I see GWT 2.1 release addresses security concerns, for cross-site
scripting, and introducing SafeHtml.
but nothing related to authorization.

I would appreciate your insights and any feedback from google team,
perhaps a tutorial addressing this aspect of application security is
really needed !

is it possible for GWT team to introduce annotation-based support for
addressing security ?
does it make sense at all, or i'm missing something.

what have been your experiences in implementing security in GWT ?

Thank You

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Re: Re: Announcing GWT 2.1

These mail are been wrongly marked to mePlease avoid.RegardsRahul ShindeOn Mon, 
01 Nov 2010 10:04:12 +0530 Shawn Brown wrotegt;gt;gt; That being said, I'm 
not a Spring (nor Guice) fan, so would actuallygt;gt;gt; enjoy seeing 
numbers that show, say, your stack w/Spring takes x% moregt;gt;gt; time than 
the same stack w/o Spring.gt;gt;One 
more:gt;gt;http://www.streamhead.com/google-appengine-java-loading-request-analysis/gt;gt;Shawngt;gt;--
 gt;You received this message because you are subscribed to the Google Groups 
Google Web Toolkit group.gt;To post to this group, send email to 
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email to google-web-toolkit+unsubscr...@googlegroups.com.gt;For more options, 
visit this group at 
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Re: Re: Announcing GWT 2.1

These mail are been wrongly marked to mePlease avoid.RegardsRahul ShindeOn Mon, 
01 Nov 2010 11:01:25 +0530 Stephen Haberman wrotegt;Hi Shawn,gt;gt;Thanks 
for the links.gt;gt;Moving off JDO and Spring MVC (the web framework, not DI) 
seemed to begt;the biggest startup time wins, which is in line with my 
assertion thatgt;DI itself is not typically the bottleneck.gt;gt;That being 
said, the streamhead link:gt;gt;gt; 
http://www.streamhead.com/google-appengine-java-loading-request-analysis/gt;gt;Was
 the most interesting because he truly did DI/no-DI comparisongt;(trusting his 
approach anyway), and saw base DI adding 1s overhead.gt;gt;That is more than 
I would have guessed, but given it's Spring, I guessgt;I can believe 
it.gt;gt;I do enjoy seeing startup time highlighted--way too many pointy 
hairedgt;managers (or architects) don't think 10s+, 30s+, 60s+ app startups 
timesgt;affect their developers' productivity. It's terribly 
frustrating.gt;gt;Thanks again,gt;Stephengt;gt;-- gt;You received this 
message because you are subscribed to the Google Groups Google Web Toolkit 
group.gt;To post to this group, send email to 
google-web-tool...@googlegroups.com.gt;To unsubscribe from this group, send 
email to google-web-toolkit+unsubscr...@googlegroups.com.gt;For more options, 
visit this group at 
http://groups.google.com/group/google-web-toolkit?hl=en.gt;gt; 

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Re: Re: CellTree reordering nodes?

These mail are been wrongly marked to mePlease avoid.RegardsRahul ShindeOn Mon, 
01 Nov 2010 13:53:51 +0530 David Pinn wrotegt;I don't know you you've screwed 
up; but if you have, so have I.gt;gt;I too have been seeing very strange 
event-handling behaviour, withgt;values being passed to getNodeInfo that are 
not for the node clickedgt;on. Using your trick with .add(0, Object) made my 
problem go away too.gt;Right now I'm really happy because it is just that 
little bit lessgt;likely that we are both stupid. maybe.gt;gt;On Nov 1, 3:04 
am, decitrig lt;rws...@gmail.comgt; wrote:gt;gt; This problem is a bit 
tricky to describe; forgive me. I have a cellgt;gt; tree where nodes are 
added programmatically by doing a getList().add()gt;gt; on a ListDataProvider 
field. However, I found that usinggt;gt; the .add(Object) method would do 
strange things to the ordering, i.e.gt;gt; the node *rendered* as Item 1 
would be passed as *value* Item 2 togt;gt; getNodeInfo(), and thus it 
looked like Item 1 got Item 2's children.gt;gt;gt;gt; The really strange 
thing is that if I do .add(0, Object), thengt;gt; everything works 
fine.gt;gt;gt;gt; The actual code can be found 
here:http://bitbucket.org/slide_rule/umd-code-review/src/tip/src/edu/umd/r...gt;gt;gt;gt;
 I just want to have list operations reflected in the tree, is this agt;gt; 
bug or have I just screwed this up somehow?gt;gt;gt;gt; --gt;gt; 
rwsimsgt;gt;-- gt;You received this message because you are subscribed to 
the Google Groups Google Web Toolkit group.gt;To post to this group, send 
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Re: Wave styled widgets

2010-11-01 Thread gopal bhalala

Hi to all,

Any suggestion please...

Best Regards Thanking you,
Gopal Dhanjibhai Bhalala

On Sun, Oct 24, 2010 at 10:21 PM, Deepak Singh deepaksingh...@gmail.comwrote:

I also need to know the frame which has been used in Google wave. Anybody
who can give idea about how to create such type of custom components or
anything similar available to use.

Thanks
Deepak

On Sun, Oct 24, 2010 at 2:23 PM, gopal bhalala gopalbhal...@gmail.comwrote:

Hi to all,

Any body knows framework or another stuff which is provides Wave styled
widgets

Best Regards Thanking you,
Gopal Dhanjibhai Bhalala

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Re: No GWT Developer Plugin for Chrome on OSX

I don't think they are running all Macs. I think they have given up Windows
but offer a choice of Mac or Linux.

Jeff

On Sat, Oct 30, 2010 at 10:55 AM, SteveG steven.gent...@gmail.com wrote:

 See subject.

 Why is this - I thought Google was running all Macs now - and this
 product is missing the developer plugin for Chrome?

 Curious if this is something in progress or should I just continue to
 use Safari/Firefox ?

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Re: for(;;) with 2.01

As an aside, do while is semantically much 'cleaner' as is while(boolean)
IMHO :)


On Fri, Oct 29, 2010 at 5:16 PM, marcusucubi marcusuc...@gmail.com wrote:

 Hi,

 I had a loop (using a for(;;) {} ) in my GWT code.

 When I moved to 2.01, the loop acted weird. (the function with the
 loop would always return false, when true was also possible.)

 I changed the loop to a do{}while(true); loop and it worked fine.

 Sorry I don't have a sample code to demo, but I thought it might be
 helpful to share.  cheers,

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Re: Announcing GWT 2.1



On 31 oct, 18:57, Jeff Schwartz jefftschwa...@gmail.com wrote:
 Hi Thomas,

 No hard feelings, I assure you, and I think your English is very good so
 please don't feel insecure. I apologize if I came off with an attitude; I
 didn't mean to, but it was early in the morning and I didn't have my 1st cup
 of coffee :)

OK, no problem.

 Roo is a Spring Source technology as is STS  Spring DI. Spring DI uses an
 application context XML file placed in the war which upon application start
 up is read. If its contents include declarative class nodes then those
 classes are instantiated and any additional parameters may also be assigned
 to their properties to bring them into a usable state. Within the
 application's code are DI attribute declarations that are used by Spring DI
 for injecting the objects into the application. Almost all of the Java based
 DI technologies work in a similar fashion.

Well, except that Guice for instance (and I believe JavaEE 6 too, as
it's based on JSR 330, lead by Bob Lee, creator of Guice) does not use
an XML file.

 The benefits of using DI can vary. It is handy when you want to mock classes
 for testing, for instance. It is also handy for providing the ability to
 switch among the numerous implementations of common APIs. These are very
 worthy capabilities and in the right situations are handy to have. I
 personally use Spring DI with Wicket and Hibernate. They work together very
 well.

 But with the positive also comes the negative just like with most things in
 life. For instance, many developers view maintaining an application's
 context file as burdensome and often complicated. In truth, at least IMO,
 this is best served by tooling provided in an IDE which understands the XML
 schemas and which can provide some code completion as well as intelligent
 feedback.

That's why Guice does not use XML but only plain old Java with
annotations. It's in some situations not as flexible as Spring though:
http://code.google.com/p/google-guice/issues/detail?id=167 (for
instance)
See also: http://code.google.com/p/google-guice/wiki/SpringComparison

But Spring can also be used without an XML configuration:
http://blog.springsource.com/2009/12/22/configuration-simplifications-in-spring-3-0/
(it's much like DI by hand)

 STS, Springs' added value release of Eclipse, does just that but
 not everyone is using STS. On App Engine, one has 30 seconds to complete an
 HTML request. While that may seem like a lot of time, it isn't when you
 consider that on App Engine the time allocated to starting up a new virtual
 server to service the request is also included in that 20 second quota.
 Exceed that quota and your request fails with a 500 error. As DI requires
 additional cpu cycles to do its magic, it may cause an application to exceed
 the 30 second quota and fail at start up which I am sure you would agree is
 something to be avoided.

Isn't that somehow due to Spring insisting in everything should be a
singleton (and eagerly instantiating them)?

 So I am not opposed to DI at all, I just prefer to have the option of using
 it or not using it such as on App Engine.

So I assure you RequestFactory does not imply DI; much the contrary
actually (in 2.1.0) ;-)

 In regard to GWT v2.1 MVP, it seems apparent to me that Google is
 championing Roo as their choice for developers to use when integrating MVP
 into their GWT applications. From the little I really know about it, Roo is
 able to generate a lot of the boilerplate code needed to keep the views,
 models and presenters in sync. This is fine but I would have preferred if
 Google had also provided options such as extending the code refactoring
 ability in Eclipse to provide this support. I imagine this wouldn't be a
 trivial effort but what is when it comes to developing applications? As an
 example of what I mean, currently when adding a RemoteService using Eclipse
 all the bindings between the service interface, the service async interface
 and the service implementation are automatically generated. If I add a
 method to the service interface and forget to add its implementation it is
 flagged as an error. This type of 'built in' support is very intuitive as
 well as productive since the developer is already familiar with their IDE. I
 can imagine this can also be done with MVP in Eclipse and would eliminate
 the need for Roo altogether.

I don't know exactly what Roo generates, but there are two parts:
 - validation: EntityProxy re. their @ProxyFor counterpart, and
RequestContext re. their @Service counterpart, and Editor? re. the
edited object: yes having validation right in the IDE would be great,
but it can only be done one way (an EntityProxy/RequestContext method
doesn't match any method on the @ProxyFor/@Service class, Editor
trying to edit a property that doesn't exist on the object; or type
mismatch; but you won't want e.g. the EntityProxy being flagged
because it doesn't map a method of the @ProxyFor object, as that could
very well

Re: Route animation in google maps with GWT

2010-11-01 Thread Jan

Hi B,

Thanks for your answers. I found the error. For setting the schedule,
i used the method timer.schedule()..The thing with that method is,
that the timers run method is called only one time..so now i use the
method timer.scheduleRepeating() and it works perfectly..in my
example, i have 370 points, and the performance is acceptable...

So i think, i will reach my goals. :-)

Thank you, best regards. Jan

On 1 Nov., 10:58, Blagoja Chavkoski baze...@gmail.com wrote:
 Hi,

 From the code I cant really say whats the problem..looks ok...
 should show the polylone at list if is added with a weight 0

 but on the otehr hand i see a lot of short comings .. some of those...
 1. the timer is to fast..
 2 . the insert vertex mehtod is going to be killing slow if u have more than
 300 points
 ..

 Why do you need this software?!
 Like I wrote before Im a owner of platform designed for tracking..
 mainly used for vehicles, but cant be used for anything,
 maybe I can offer you a partnership :)

 regards,
 B

 On Fri, Oct 29, 2010 at 3:12 PM, Jan jan.widm...@gmx.ch wrote:
  Hi B,

  Thanks for your answers.

  I tried it like this:

  In the class shipAnimation in the method onSuccess(), which is called
  after successful rpc callback, i wrote the following code:

         LatLng[] animationPoints = new LatLng[1];
         animationPoints[0]=start;
         Polyline animatedWay = new Polyline(animationPoints,
  getPolylineColor(), polylineWidth, 1);
         map.addOverlay(animatedWay);
         ShipAnimationTimer timer = new ShipAnimationTimer(animatedWay,
  gpsDataLatLng, map);
         timer.schedule(30);

  The variable start is the first point of the polyline

  In the class ShipAnimationTimer, which extends the gwt timer, i wrote
  the following code:

   public void run() {
     animatedWay.insertVertex(counter, gpsDataLatLng[counter]);
     counter++;
     if(counter==gpsDataLatLng.length){
       this.cancel();
     }
   }

  So far so good, but when i try to run my app, nothing happens. That
  means, start and endmarker of the polyline are coming, but not the
  polyline..

  Do you see an error?

  Thanks for your help.

  Jan

  On 29 Okt., 14:00, Blagoja Chavkoski baze...@gmail.com wrote:
   I just want to say that for the statment (and no way that can be done) im
   wrong :) there is a GWT gear lib witch start multiple threads in a
  browser
   but this is totally diff then what is a real thread in a programming
   language :) but in any case it has the same mining..

   On Fri, Oct 29, 2010 at 1:56 PM, Blagoja Chavkoski baze...@gmail.com
  wrote:

hi,

This is the scenario u need to do..I implement this in a program used
  for a
vehicle tracking...

1. get all the data u need to animate(all LatlLon positions) and store
  them
in a arraylist

2. start one timer (gwt timer ) let me say witch will fire on every
  100ms
(U have to test what will be the real time, dependes on the
power of the browser, for IE i had the biggest and foer opera and
  chrome
and safari the lowest, they have the best JS engins)

3.when the timer fires the event(u take by some logic couple of the
  Lotlng
(3-4) from the list, and till the next firing of the timer u make a
  paint of
this positions)

4. the timer pasts 100ms and fires again (by this time u have finished
  with
the paitn of the first 3-4 Latlon) so you move again to point (3) when
  the
timer fires again (4) you soposed to be finished with (3) and u move
  again
to (3) and u do this move (3)-(4)-(3) while the list is not empty..when
  the
list is empty u just terminate(stop) the timer...

This is the scenario...u have to make a testing on the timing for sleep
  of
the timer...(when new event is fired for the timer, u have to be
  finished
with show of the latlon-s, what i want to say is that the combination
  of
timer fire time and the number of the events u take is something u need
  to
calculate by performanse(on what u do with the positions and how much
  time
takes to handle this)

Hope I help,

Regards from Germany:)
B

p.s u cant use thread sleep and so on...because u dont have threds in
  the
browser side..browser screepts(JS, FLEX, FLESH, SILVERLITE) are single
thread so there is no logic(and no way that can be done) for GWT to
  emulate
this libs.

On Fri, Oct 29, 2010 at 1:08 PM, Jan jan.widm...@gmx.ch wrote:

Hi Brian,

Thanks for your answer. I tried some things with the array and timer
and that staff. I tried with wait(), sleep() and also with a timer
object. But everytime, there comes an error, that these things are not
supported by gwt..

The easiest way would be to have the normal callback, which gets the
latlng array. Then in the onSuccess() Method changing the marker
positions with a for loop and a delay. I tried that, but i couldn't
find a possibility to make this delay

Is it possible

Re: client code from external directory

2010-11-01 Thread Alex Shabanov

I've just found out the error.

At first, maven-gwt-plugin must be of 1.3.1.version, ver 1.2 that is
available in the official maven repository does not support
compileSourcesArtifacts tag.
The other problem is that I tried to include generic module by adding
Generic.gwt.xml in gwtmod module, but this file must be located in the
resources of the distributed library, i.e. in generic module's
resources.

Though it's a pity that I can't use relative path in the gwtmod, e.g.
telling GWT compiler to use sources from, say, ../another-project/main/
java/** path - to not to modify external library's source code and
maven configuration. And I guess this is not that bad because exported
module must be checked early by the GWT compiler for using only the
emulated part of the JRE.

On Nov 1, 11:21 am, Alex Shabanov avshaba...@gmail.com wrote:
 Thank you for attention for my problem.

 On Nov 1, 3:21 am, Jeff Larsen larse...@gmail.com wrote:

  Put a gwt.xml file in the project.

 I did. It's name is Generic.gwt.xml.



  define the module, then you'll be able to import your library project
  into a gwt project.

 The same thing, yes I defined the module (Generic.gwt.xml), but it
 never compiles: [INFO] com.mysite.generic.Generic is up to date. GWT 
 compilation

 skipped

 This results in the subsequent error in Application module because it
 uses Constants type defined in the Generic module.



  ...

 By the way, the sources of the sample application is available, just
 do svn 
 checkouthttp://webkit-jspf.googlecode.com/svn/trunk/tmp/maven/gwt-external-lib
 It compiles without errors if the usages of Constants type are
 commented.

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Announcing: Visual GUI Designer in web browser

2010-11-01 Thread Trung

Update: new http://demo.gdevelop.com/ with more widgets (Label,
TextBox, CheckBox, Radio Button, List Box and Button) and panels
(Vertical Panel, Horizontal Panel).

Please note about Editing features:
- Shortcut keys (Ctrl+C, Ctrl+V, Ctrl+Z, Ctrl+Y, Ctrl+A, etc)
- Select multiple widgets by holding Shift/Ctrl key while
(de)selecting widgets.
- Drag widgets from a panel to another one: move widgets to the new
panel.
- Hold Ctrl key down while dragging will clone widgets.

Comments and suggestions are highly appreciated.


On Oct 29, 9:28 am, Trung gwtdevelo...@gmail.com wrote:
 Hi all,

 We have a Visual GUI Designer application running in web browser (work
 fine in Firefox, Chrome, Safari, but not good in IE and Opera).

 See the blog 
 posthttp://www.gdevelop.com/w/blog/2010/10/29/visual-gui-designer-in-web-...
 and the demohttp://demo.gdevelop.com/

 The application is currently in early stage, comments and suggestions
 are appreciated.

 Cheers

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Fwd: Announcing gwt4air 1.0

2010-11-01 Thread nino ekambi

-- Forwarded message --
From: nino ekambi jazzmatad...@googlemail.com
Date: 2010/11/1
Subject: Announcing gwt4air 1.0
To: google-web-toolkit@googlegroups.com

Hello community,
It s been a long way but i m proud to annouce the release of Gwt4Air 1.0
Gwt4Air will give you the the ability to turn  your GWT apps in to desktop
apps using adobe air.

You can download the jar here http://code.google.com/p/gwt4air/.
The first release is compatible with gxt 2.2, gwt 2.0 and adobe air 2. It
includes the following features:

 1) Access to the core AIR APi from GWT, you basically can do anything you
would do in actionscript or javascript.
 2) An adapter to make GXT(Ext-GWT) works inside the air application sandbox
 3) A pdf module to read and write pdf files.
 4) A google maps module, so you can produce maps even when your web client
is offline
 5) An adapter to male RPC and RequestBuilder calls possible with AIR.
 6) A sample app with source code that shows some examples. One of the
example is how you can export an GXT chart to pdf using gwt4air.

The next releases will add more and more features(check out the roadmap)
To get started you can check out the wiki page.

I hope you guys are going to like this and provide some good feedbacks.
For any question please feel free to contact me.

best regards,

Alain

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repositioning node in a celltree

Hi!

 

did someone already modify successful a celltree's structure
programmatically?  I want to change the parent of a node programmatically
and see the changes displayed on the screen. What I do now is the following:

.remove the considered node's value from the old parent's
ListDataProvider using ListDataProvider#getList()#remove ().

.add the considered node's value to the new parent's
ListDataProvider using ListDataProvider#getList()#add()

.call ListDataProvider#refresh on both old and new parent
ListDataProviders.

 

I expected to see the old node move from the old to the new parent. But what
occurs instead, is that the node I wanted to move just disappear from the
tree.

What can be the problem?

 

Thanks for any help.

Rodrigue

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Re: Announcing GWT 2.1

On Mon, Nov 1, 2010 at 8:22 AM, Thomas Broyer t.bro...@gmail.com wrote:


 Well, except that Guice for instance (and I believe JavaEE 6 too, as
 it's based on JSR 330, lead by Bob Lee, creator of Guice) does not use
 an XML file.


Yes however I was specifically speaking to Spring DI.

Isn't that somehow due to Spring insisting in everything should be a
 singleton (and eagerly instantiating them)?


I believe so, yes.

My concerns aren't with MVP; from what I have read I think MVP is a very
good design pattern  I am eager to incorporate it. My concerns are more
aligned with the dependency on Roo  STS (which I use for Groovy and for
Grails development  which I really like) to accomplish syncing Views 
Presenters. I would have preferred a pure Java solution such as relying on
the compiler and code refactoring to generate binding code where needed.

Jeff

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RE: repositioning node in a celltree

 

Hi!

 

did someone already modify successful a celltree's structure
programmatically?  I want to change the parent of a node programmatically
and see the changes displayed on the screen. What I do now is the following:

.remove the considered node's value from the old parent's
ListDataProvider using ListDataProvider#getList()#remove ().

.add the considered node's value to the new parent's
ListDataProvider using ListDataProvider#getList()#add()

.call ListDataProvider#refresh on both old and new parent
ListDataProviders.

 

I expected to see the old node move from the old to the new parent. But what
occurs instead, is that the node I wanted to move just disappear from the
tree.

What can be the problem?

 

And I would also like to know, if there is a way to tell to a CellTree to
redraw itself because the backed data have changed.

 

Thanks for any help.

Rodrigue

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problems with gwt

2010-11-01 Thread Cristina


Hi,

I've found some difficults with gwt, I've been trying to put paging
grid into a grouping store but i can't. I can see the paging in the
bottom of the list of groups but i want to put paging inside each
group and i can't. if somebody has an idea about it, please tell me
because i'm lost...
Also I've got another problem hiddind columns of a grid.  I set the
parameter setHidden in each column to true. But I don't want to see
this column when I
push on the drop down button. I try it with css style but I still see
the column, what can I do??

I put some code of the column configuration:
ColumnConfig reportDateColumnConfig = new ColumnConfig(,
FIELD_DATE_REPORT, 0, false,null,FIELD_DATE_REPORT);
reportDateColumnConfig.setHidden(true);
reportDateColumnConfig.setCss(overflow: hidden;);

I hope somebody could help.

Thank you very much

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Re: Route animation in google maps with GWT

2010-11-01 Thread Blagoja Chavkoski

Hi,

Thats the way to go...wosent that hard :)

Chears,
B

On Mon, Nov 1, 2010 at 1:34 PM, Jan jan.widm...@gmx.ch wrote:

 Hi B,

 Thanks for your answers. I found the error. For setting the schedule,
 i used the method timer.schedule()..The thing with that method is,
 that the timers run method is called only one time..so now i use the
 method timer.scheduleRepeating() and it works perfectly..in my
 example, i have 370 points, and the performance is acceptable...

 So i think, i will reach my goals. :-)

 Thank you, best regards. Jan

 On 1 Nov., 10:58, Blagoja Chavkoski baze...@gmail.com wrote:
  Hi,
 
  From the code I cant really say whats the problem..looks ok...
  should show the polylone at list if is added with a weight 0
 
  but on the otehr hand i see a lot of short comings .. some of those...
  1. the timer is to fast..
  2 . the insert vertex mehtod is going to be killing slow if u have more
 than
  300 points
  ..
 
  Why do you need this software?!
  Like I wrote before Im a owner of platform designed for tracking..
  mainly used for vehicles, but cant be used for anything,
  maybe I can offer you a partnership :)
 
  regards,
  B
 
  On Fri, Oct 29, 2010 at 3:12 PM, Jan jan.widm...@gmx.ch wrote:
   Hi B,
 
   Thanks for your answers.
 
   I tried it like this:
 
   In the class shipAnimation in the method onSuccess(), which is called
   after successful rpc callback, i wrote the following code:
 
  LatLng[] animationPoints = new LatLng[1];
  animationPoints[0]=start;
  Polyline animatedWay = new Polyline(animationPoints,
   getPolylineColor(), polylineWidth, 1);
  map.addOverlay(animatedWay);
  ShipAnimationTimer timer = new ShipAnimationTimer(animatedWay,
   gpsDataLatLng, map);
  timer.schedule(30);
 
   The variable start is the first point of the polyline
 
   In the class ShipAnimationTimer, which extends the gwt timer, i wrote
   the following code:
 
public void run() {
  animatedWay.insertVertex(counter, gpsDataLatLng[counter]);
  counter++;
  if(counter==gpsDataLatLng.length){
this.cancel();
  }
}
 
   So far so good, but when i try to run my app, nothing happens. That
   means, start and endmarker of the polyline are coming, but not the
   polyline..
 
   Do you see an error?
 
   Thanks for your help.
 
   Jan
 
   On 29 Okt., 14:00, Blagoja Chavkoski baze...@gmail.com wrote:
I just want to say that for the statment (and no way that can be
 done) im
wrong :) there is a GWT gear lib witch start multiple threads in a
   browser
but this is totally diff then what is a real thread in a programming
language :) but in any case it has the same mining..
 
On Fri, Oct 29, 2010 at 1:56 PM, Blagoja Chavkoski 
 baze...@gmail.com
   wrote:
 
 hi,
 
 This is the scenario u need to do..I implement this in a program
 used
   for a
 vehicle tracking...
 
 1. get all the data u need to animate(all LatlLon positions) and
 store
   them
 in a arraylist
 
 2. start one timer (gwt timer ) let me say witch will fire on every
   100ms
 (U have to test what will be the real time, dependes on the
 power of the browser, for IE i had the biggest and foer opera and
   chrome
 and safari the lowest, they have the best JS engins)
 
 3.when the timer fires the event(u take by some logic couple of the
   Lotlng
 (3-4) from the list, and till the next firing of the timer u make a
   paint of
 this positions)
 
 4. the timer pasts 100ms and fires again (by this time u have
 finished
   with
 the paitn of the first 3-4 Latlon) so you move again to point (3)
 when
   the
 timer fires again (4) you soposed to be finished with (3) and u
 move
   again
 to (3) and u do this move (3)-(4)-(3) while the list is not
 empty..when
   the
 list is empty u just terminate(stop) the timer...
 
 This is the scenario...u have to make a testing on the timing for
 sleep
   of
 the timer...(when new event is fired for the timer, u have to be
   finished
 with show of the latlon-s, what i want to say is that the
 combination
   of
 timer fire time and the number of the events u take is something u
 need
   to
 calculate by performanse(on what u do with the positions and how
 much
   time
 takes to handle this)
 
 Hope I help,
 
 Regards from Germany:)
 B
 
 p.s u cant use thread sleep and so on...because u dont have threds
 in
   the
 browser side..browser screepts(JS, FLEX, FLESH, SILVERLITE) are
 single
 thread so there is no logic(and no way that can be done) for GWT to
   emulate
 this libs.
 
 On Fri, Oct 29, 2010 at 1:08 PM, Jan jan.widm...@gmx.ch wrote:
 
 Hi Brian,
 
 Thanks for your answer. I tried some things with the array and
 timer
 and that staff. I tried with wait(), sleep() and also with a timer
 object. But everytime, there comes an error, that these things are
 not
 supported

Re: Role based Security in GWT: how to implement ?

2010-11-01 Thread Stefan Bachert

Hi zixzigma,

doing security in the client would be wrong.
Remember you are doing client-server with GWT (not fatclient as
classical web technology does)
The client should ony receive data which are allowed for the current
user role. The client is never ever a trusted component!
So in the end any client based security concept (basing on annotation
or what else) is just a misconception.

The server is the only place where security can apply.
But GWT is mainly a client side topic.
Authentication based security or roles based security will never be a
GWT (client) topic

Stefan Bachert
http://gwtworld.de



On 30 Okt., 10:35, zixzigma zixzi...@gmail.com wrote:
 Hello everyone,

 I have some questions regarding implementing security in GWT.

 It's a typical use case:
 let's say in your app, users can have different roles,
 and you want to show only the relevant part of the UI, based on their
 role.

 and I am talking about more than 3 roles.
 eg:(Customer, BranchManager, Teller, CEO, System Admin)
 (after all GWT is for larger apps, right ? )

 on the back-end, i am planning to use Spring, and i'm going to use
 Spring Security,
 for authentication, fine-grained authorization, (method level, ACL),
 it is a very mature framework and annotation based.

 however, when it comes to the front-end UI, I don't know what is the
 recommended practice to incorporate role-based security in MVP. (i
 don't want the security checks get scattered across all methods on the
 client, bloated code, if statements everywhere, security is a cross-
 cutting concern, right? should i put it in the Activity/Presenter ?)

 I see GWT 2.1 release addresses security concerns, for cross-site
 scripting, and introducing SafeHtml.
 but nothing related to authorization.

 I would appreciate your insights and any feedback from google team,
 perhaps a tutorial addressing this aspect of application security is
 really needed !

 is it possible for GWT team to introduce annotation-based support for
 addressing security ?
 does it make sense at all, or i'm missing something.

 what have been your experiences in implementing security in GWT ?

 Thank You

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How RPC works on GWT?

2010-11-01 Thread JuDaC


Hi folks!
   I'd like to know how RPC works, but I do not want to know about the
proxy created and that abstraction we can easily found on GWT web
page.  I want to know exactly how the resquest is build. how the post
message is sent.

   I was reading to source code and it seems to me that a GWT class
read it as a resource stream I saw it on RemoteServiceServlet class on
the processPost method, the first thing that this method does is to
invoke the readContent method, passing the request as parameter.


  I would like to listen from you that I'm wrong and that the post
info is not read as a resource stream, but as a parameter :)

  I create a Valve to tomcat and I need to get the GWT post
information before it reaches the GWT servlet. but the thing is that
if it comes as an stream I can not do that. thats bad! :(
I'm afraid that if I do that the GWT servlet won't work (I wish I were
wrong here again).

  Thanks a lot folks!!!
  Best Regards
  JDC


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List editing with Editor/RequestFactory + GAE/Objectify

2010-11-01 Thread Tobias

Hi,

to get accustomed to GAE as well as GWT 2.1, I am working on a pet
project for managing Recipes. A Recipe has multiple Ingredients, which
I want to display in a CellTable, each Ingredient having (editable)
columns for Amount and Type. New Ingredient lines in the table can be
added with a button, existing ingredients can be removed and reordered
by buttons (or DnD later).
So now I am trying to figure out how to wire this up with the Editor
framework and RequestFactory on the Client-side and the GAE datastore
and Objectify (or JDO, if that makes it any easier). I created some
dummy Recipe object with a getIngredients()-list with some dummy
Ingredients and managed to get the CellTable populated with these by
the Editor driver automatically.

What I do not understand however is how far this databinding goes? How
would I implement an Add Ingredient button, that would create a new
empty Ingredient, and would I have to create the CellTable row for
that manually or would the Editor driver do that for me?

My other question is related to the Server model. RequestFactory seems
to be tailored to JDO/JPA. Apparently, to enable the Editor framework
work, my Recipe class needs a getIngredients() method. How should I
implement this in an Objectify based persistence?

Thank you,
Tobias

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uibinders - any available graphical editors and/or intellisense for attributes for uibinders?

2010-11-01 Thread Yves

hi guys,


love gwt and it suits large projects nicely. i do have 2 questions
regarding uibinders.

1. are there any uibinder graphical editors? for example instead of
producing code when using GWT Designer, it can produce uibinder code
instead?

2. if not, are there any auto-complete or intellisense for uibinder to
show possible attributes in the elements? both eclipse and netbeans
are really lacking here.

direction needed.


regards,

Yves

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Injecting EventBus with GIN

2010-11-01 Thread xworker

Hi all

Trying to inject the eventbus into a component but I'm getting the
has no default (zero args) constructor. error. Any clues what I'm
doing wrong? Very new to GIN, so it might be trivial..

Here is my code:

module:
public class MyWidgetClientModule extends AbstractGinModule {
  protected void configure() {
  
bind(EventBus.class).to(SimpleEventBus.class).in(Singleton.class);

  }
}

injector:
@GinModules(MyWidgetClientModule.class)
public interface MyWidgetGinjector extends Ginjector {

}

and the component I trying to inject:
public class I18NLabel extends Label implements
ChangeLanguageEventHandler{


private final SimpleEventBus eventBus;
private String key;

@Inject
public I18NLabel(SimpleEventBus eventBus) {
this.eventBus = eventBus;
}
...
...

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Re: uibinders - any available graphical editors and/or intellisense for attributes for uibinders?



On 1 nov, 15:25, Yves yveshw...@gmail.com wrote:
 hi guys,

 love gwt and it suits large projects nicely. i do have 2 questions
 regarding uibinders.

 1. are there any uibinder graphical editors? for example instead of
 producing code when using GWT Designer, it can produce uibinder code
 instead?

GWT Designer *can* edit and produce UiBinder XML (you have to use GWT
2.1 though; it won't work with GWT 2.0).

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Re: Role based Security in GWT: how to implement ?

2010-11-01 Thread Stephen Haberman


 The server is the only place where security can apply.

Very much agreed.

 But GWT is mainly a client side topic. Authentication based security
 or roles based security will never be a GWT (client) topic

Perhaps pre-2.1, yes, but the new RequestFactory, given it facilitates
client-server data access, with the goal of ORM-like minimal/no
boilerplate serialization code, will have to deal with authentication
based security sooner or later.

- Stephen

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Re: Announcing GWT 2.1



On 1 nov, 14:04, Jeff Schwartz jefftschwa...@gmail.com wrote:
 On Mon, Nov 1, 2010 at 8:22 AM, Thomas Broyer t.bro...@gmail.com wrote:

  Well, except that Guice for instance (and I believe JavaEE 6 too, as
  it's based on JSR 330, lead by Bob Lee, creator of Guice) does not use
  an XML file.

 Yes however I was specifically speaking to Spring DI.

 Isn't that somehow due to Spring insisting in everything should be a

  singleton (and eagerly instantiating them)?

 I believe so, yes.

So the issue is not DI (the pattern), but the Spring framework ;-)

(and to answer my remark re. DI that I'd encourage
*anyone* to follow, I wouldn't recommend using Spring for DI, unless
you want configurability through XML application contexts)


 My concerns aren't with MVP; from what I have read I think MVP is a very
 good design pattern  I am eager to incorporate it. My concerns are more
 aligned with the dependency on Roo  STS (which I use for Groovy and for
 Grails development  which I really like) to accomplish syncing Views 
 Presenters. I would have preferred a pure Java solution such as relying on
 the compiler and code refactoring to generate binding code where needed.

 Jeff

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Re: 2.1 linker changes



On 1 nov, 05:28, Shawn Brown big.coffee.lo...@gmail.com wrote:
 Should appName.nocache.js be one of the Artifacts obtained via
 artifacts.find(EmittedArtifact.class)?

I think so (haven't verified, but reading the code doesn't make me
think it'd work differently)

 In 2.04 it was emitted in the link method but in 2.1 it isn't

Yes it is, but the SelectionScriptLinker now supports
shardability (and all built-in linkers are shardable), so the linker
is called once per permutation and then a last time after all
permutations have been compiled; and the selection script is only
emitted during that last call.
(it's not the same link method, but it's still done in the link
method)

 Is this by design?  If so, what is the design?!?

Have a look at the javadoc for Linker in 2.1, it describes the new
design with shardable linkers:
http://google-web-toolkit.googlecode.com/svn/javadoc/2.1/com/google/gwt/core/ext/Linker.html

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Re: No GWT Developer Plugin for Chrome on OSX

2010-11-01 Thread Chris Conroy

http://code.google.com/p/google-web-toolkit/issues/detail?id=4493

On Mon, Nov 1, 2010 at 8:16 AM, Jeff Schwartz jefftschwa...@gmail.comwrote:

I don't think they are running all Macs. I think they have given up Windows
but offer a choice of Mac or Linux.

Jeff

On Sat, Oct 30, 2010 at 10:55 AM, SteveG steven.gent...@gmail.com wrote:

See subject.

Why is this - I thought Google was running all Macs now - and this
product is missing the developer plugin for Chrome?

Curious if this is something in progress or should I just continue to
use Safari/Firefox ?

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Re: Wave styled widgets

2010-11-01 Thread Gal Dolber

Wave + Firebug + lots of time will do it

On Mon, Nov 1, 2010 at 8:06 AM, gopal bhalala gopalbhal...@gmail.comwrote:

Hi to all,

Any suggestion please...

Best Regards Thanking you,
Gopal Dhanjibhai Bhalala

On Sun, Oct 24, 2010 at 10:21 PM, Deepak Singh
deepaksingh...@gmail.comwrote:

I also need to know the frame which has been used in Google wave. Anybody
who can give idea about how to create such type of custom components or
anything similar available to use.

Thanks
Deepak

On Sun, Oct 24, 2010 at 2:23 PM, gopal bhalala gopalbhal...@gmail.comwrote:

Hi to all,

Any body knows framework or another stuff which is provides Wave styled
widgets

Best Regards Thanking you,
Gopal Dhanjibhai Bhalala

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http://code.google.com/p/guit/

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Re: Re: CellTree reordering nodes?

There is a bug in CellTreeNodeView where it always assumes new data starts
at index 0, which of course is not true if the data is being appended. That
explains why it works when you insert at index 0. Another workaround is to
populate the ListDataProvider before creating the CellTree (if that is an
option for your app).

I'm working on a fix that will be in the next GWT release.

Thanks,
John LaBanca
jlaba...@google.com

On Mon, Nov 1, 2010 at 5:17 AM, rahul vijay shinde
shinderah...@rediffmail.com wrote:

These mail are been wrongly marked to me

Please avoid.

Regards
Rahul Shinde

On Mon, 01 Nov 2010 13:53:51 +0530 David Pinn wrote

I don't know you you've screwed up; but if you have, so have I.

I too have been seeing very strange event-handling behaviour, with
values being passed to getNodeInfo that are not for the node clicked
on. Using your trick with .add(0, Object) made my problem go away too.
Right now I'm really happy because it is just that little bit less
likely that we are both stupid. maybe.

On Nov 1, 3:04 am, decitrig rws...@gmail.com wrote:
This problem is a bit tricky to describe; forgive me. I have a cell
tree where nodes are added programmatically by doing a getList().add()
on a ListDataProvider field. However, I found that using
the .add(Object) method would do strange things to the ordering, i.e.
the node *rendered* as Item 1 would be passed as *value* Item 2 to
getNodeInfo(), and thus it looked like Item 1 got Item 2's children.

The really strange thing is that if I do .add(0, Object), then
everything works fine.

The actual code can be found here:
http://bitbucket.org/slide_rule/umd-code-review/src/tip/src/edu/umd/r...

I just want to have list operations reflected in the tree, is this a
bug or have I just screwed this up somehow?

--
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Re: How can I create a CellTree of Anchor nodes?

We don't provide an AnchorCell, buts its easy to create one. Just extend
AbstractCell and override the render() method to render a hyperlink into the
SafeHtmlBuilder.

FYI - decitrig is correct. The old Showcase used Hyperlinks. The new
Showcase handles selection via the selection model and updates the history
token.

Thanks,
John LaBanca
jlaba...@google.com

On Sun, Oct 31, 2010 at 1:51 PM, decitrig rws...@gmail.com wrote:

On Oct 16, 5:50 pm, Tamer Sezgin tamer.sez...@gmail.com wrote:
It's a little complex example, but the left menu of Showcase application
is
implemented using CellTree and contains Hyperlinks..
http://gwt.google.com/samples/Showcase/Showcase.html
I assume after figuring out how it works, it should be easy to replace
Hyperlinks with Anchors (if you really need to link to external URLs).

I'm interested in the same thing, so I found this post and had a look
at the showcase code here:

http://code.google.com/p/google-web-toolkit/source/browse/#svn/trunk/samples/showcase/src/com/google/gwt/sample/showcase/client
As far as I can tell, it does nothing of the kind. It uses a selection
model to fire history change events, not hyperlinks. Were you
referring to an older version?

On Sat, Oct 16, 2010 at 6:55 AM, Blackberet ramonjsanti...@gmail.com
wrote:

I have a CellTree, I would like to add Anchor nodes to it. There is no
AnchorCell available. What do I need to use in order to implement this
functionality?

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Re: Fwd: Announcing gwt4air 1.0

2010-11-01 Thread Sorinel C

Good job -- it looks good, but...

Do you think is worth the effort, as long as Apple doesn't support
Adobe products on their systems? Also, I know lots of companies that
don't allow Flash plugin into their browser, so they go on the
JavaScript path.

Anyways, as world is so diverse, I think you'll find lots of people
interested too -- good luck!

Cheers,
http://ui-programming.blogspot.com/

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Re: Announcing GWT 2.1

Hi Jeff,

GWT 2.1 has no dependency on Roo. It is very much our intent that you should
be able to create GWT apps with or without Roo. The latter offers some
conveniences for certain types of apps like CRUD apps where you have, say,
40 entities, each with corresponding CRUD screens, and a view, presenter,
RequestContext, DAO, etc. for each. In this example, the need for concrete
classes per entity ultimately results from the fact that code generation
(whether via GWT generator or Roo) is GWT's alternative to reflection. GWT
2.1 does not require much boilerplate and 2.1.1 will require even less. And
yes, improved tooling in Google Plugin for Eclipse is definitely on radar.

As far as DI is concerned, DI proper is not the cause of cold start latency
on App Engine, but rather one particular scenario in which singletons are
created eagerly at startup time. I wrote about this on my personal blog (
http://turbomanage.wordpress.com) linked above. This should become much less
of an issue shortly (per
http://code.google.com/p/googleappengine/issues/detail?id=2456), as it
appears the GAE team is close to releasing warmup requests, and reserved
instances are on the roadmap.

Best,
/dmc

On Mon, Nov 1, 2010 at 9:04 AM, Jeff Schwartz jefftschwa...@gmail.comwrote:

On Mon, Nov 1, 2010 at 8:22 AM, Thomas Broyer t.bro...@gmail.com wrote:

Well, except that Guice for instance (and I believe JavaEE 6 too, as
it's based on JSR 330, lead by Bob Lee, creator of Guice) does not use
an XML file.

Yes however I was specifically speaking to Spring DI.

Isn't that somehow due to Spring insisting in everything should be a
singleton (and eagerly instantiating them)?

I believe so, yes.

My concerns aren't with MVP; from what I have read I think MVP is a very
good design pattern I am eager to incorporate it. My concerns are more
aligned with the dependency on Roo STS (which I use for Groovy and for
Grails development which I really like) to accomplish syncing Views
Presenters. I would have preferred a pure Java solution such as relying on
the compiler and code refactoring to generate binding code where needed.

Jeff

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Test if element has focus

2010-11-01 Thread Ice13ill

I searched for a method in GWT to test if a widget is focused or not
but i couldn't find one.
Is there a method in the GWT classes or do i have to create a native
js method ?

Thanks.

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Re: gwt-maven-plugin from Google and Codehaus

2010-11-01 Thread hezjing

I have been trying to learn gwt-maven-plugin and read the documentation
from http://mojo.codehaus.org/gwt-maven-plugin/, last published for
1.3-SNAPSHOT.

Then, I accidentally found this site for gwt-maven-plugin 2.1-SNAPSHOT at
http://people.apache.org/~nicolas/gwt-maven-plugin-2.1/, which seems to be
better one ;-)

On Wed, Oct 27, 2010 at 6:32 PM, Thomas Broyer t.bro...@gmail.com wrote:

On 27 oct, 08:50, hezjing hezj...@gmail.com wrote:
Is there any documentation for Google's gwt-maven-plugin?

As I said Form the user POV (your, our POV), it works the same as the
version
from codehaus.
In other words, the documentation from codehaus should apply just as
well to the Google version (and it did for me).

Hez

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Re: Injecting EventBus with GIN

xworker,

I think you want to inject type EventBus rather than SimpleEventBus in your
I18NLabel constructor. But just to be clear, which class is reporting the no
zero-args constructor err?

On Mon, Nov 1, 2010 at 10:31 AM, xworker blomqvist.andr...@gmail.comwrote:

 Hi all

 Trying to inject the eventbus into a component but I'm getting the
 has no default (zero args) constructor. error. Any clues what I'm
 doing wrong? Very new to GIN, so it might be trivial..

 Here is my code:

 module:
 public class MyWidgetClientModule extends AbstractGinModule {
  protected void configure() {

  bind(EventBus.class).to(SimpleEventBus.class).in(Singleton.class);

  }
}

 injector:
 @GinModules(MyWidgetClientModule.class)
 public interface MyWidgetGinjector extends Ginjector {

 }

 and the component I trying to inject:
 public class I18NLabel extends Label implements
 ChangeLanguageEventHandler{


private final SimpleEventBus eventBus;
private String key;

@Inject
public I18NLabel(SimpleEventBus eventBus) {
this.eventBus = eventBus;
}
 ...
 ...

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Re: Announcing GWT 2.1

Thanks, David, for clarifying this.

If at any time it may have seemed that I was implying that there was was any
static dependency between Roo or Spring DI and GWT let me say that I know
there isn't. There is, though, an implied dynamic dependency between Roo,
Spring DI MVP if one wants to synchronize their views and presenters
during development as per the Expenses example project. I say implied
because at this time it appears that the only available option to achieve
this is by using Roo but I am sure that there will be additional options
coming down the pike:).

I am also very pleased to know that there will be improved tooling in the
Eclipse plugin. I spend more time using Eclipse than I do with my family lol
so it is reassuring to know that this will evolve.

Again, thank you.

Jeff

On Mon, Nov 1, 2010 at 11:56 AM, David Chandler drfibona...@google.comwrote:

Hi Jeff,

GWT 2.1 has no dependency on Roo. It is very much our intent that you
should be able to create GWT apps with or without Roo. The latter offers
some conveniences for certain types of apps like CRUD apps where you have,
say, 40 entities, each with corresponding CRUD screens, and a view,
presenter, RequestContext, DAO, etc. for each. In this example, the need for
concrete classes per entity ultimately results from the fact that code
generation (whether via GWT generator or Roo) is GWT's alternative to
reflection. GWT 2.1 does not require much boilerplate and 2.1.1 will require
even less. And yes, improved tooling in Google Plugin for Eclipse is
definitely on radar.

As far as DI is concerned, DI proper is not the cause of cold start latency
on App Engine, but rather one particular scenario in which singletons are
created eagerly at startup time. I wrote about this on my personal blog (
http://turbomanage.wordpress.com) linked above. This should become much
less of an issue shortly (per
http://code.google.com/p/googleappengine/issues/detail?id=2456), as it
appears the GAE team is close to releasing warmup requests, and reserved
instances are on the roadmap.

Best,
/dmc

On Mon, Nov 1, 2010 at 9:04 AM, Jeff Schwartz jefftschwa...@gmail.comwrote:

On Mon, Nov 1, 2010 at 8:22 AM, Thomas Broyer t.bro...@gmail.com wrote:

Well, except that Guice for instance (and I believe JavaEE 6 too, as
it's based on JSR 330, lead by Bob Lee, creator of Guice) does not use
an XML file.

Yes however I was specifically speaking to Spring DI.

Isn't that somehow due to Spring insisting in everything should be a
singleton (and eagerly instantiating them)?

I believe so, yes.

Jeff

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http://googlewebtoolkit.blogspot.com/

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java.lang.NoClassDefFoundError: com/google/gdata/util/ServiceException

2010-11-01 Thread Eyal

Hi All,

I'm new to this, and I'm trying to use my Manager class in a GWT
module. I'm using Eclipse 3.6 with the latest GWT plugin and
generating a project from it.

In my GreetingServiceImpl I have a method,  public String
getDataFeed() throws IllegalArgumentException, that tries to
instantiate my DataFeedManager class through a default constructor.
That default constructor is currently doing nothing at all -- it's
just there for my testing. But when I'm attempting to do
DataFeedManager dfm = new DataFeedManager() I'm getting the
following:

Service method 'public abstract java.lang.String
com.eyes.client.GreetingService.getDataFeed() throws
java.lang.IllegalArgumentException' threw an unexpected exception:
java.lang.NoClassDefFoundError: com/google/gdata/util/ServiceException

What am I doing wrong? Researching this I saw that people were helped
by adding google-collect-1.0-rc1.jar to the build path and I added it
but I still get the above error.

Any help will be greatly appreciated.

Eyal

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Re: Reference to undefined variable gwt_remote_ui_server_port

2010-11-01 Thread leslie

I considered that some of the versions were somewhat older.  So I went
ahead and upgraded a few things.

Downloaded a new Java update from apple so now I'm using 1.5.0_26
Upgraded GWT to 2.1
Upgraded Eclipse to Helios version 3.6
Downloaded a new GWT browser plugin for safari - New GWT plugin for
eclipse

And I no longer see the error message.  I'm able to run the app.

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Communication with the Server + MVP

2010-11-01 Thread Bruno Santos

I saw the new way of using the MVP on the
'http://code.google.com/intl/pt-BR/webtoolkit/doc/latest/DevGuideMvpActivitiesAndPlaces.html',
but I have a question, how do I make a communication with the server?

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Re: Test if element has focus

There isn't such a method in GWT.  As far as I know, only IE has a method to
get the currently focused element (document.activeElement).  For other
browsers, you have to use focus/blur handlers to keep track (although maybe
you can do it at the top level for Firefox/Chrome?

Thanks,
John LaBanca
jlaba...@google.com


On Mon, Nov 1, 2010 at 12:05 PM, Ice13ill andrei.fifi...@gmail.com wrote:

 I searched for a method in GWT to test if a widget is focused or not
 but i couldn't find one.
 Is there a method in the GWT classes or do i have to create a native
 js method ?

 Thanks.

 --
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Re: Wave styled widgets

2010-11-01 Thread gopal bhalala

Hi Gal,

Thanks for reply

Any demo example for this

Best Regards Thanking you,
Gopal Dhanjibhai Bhalala

On Mon, Nov 1, 2010 at 8:52 PM, Gal Dolber gal.dol...@gmail.com wrote:

Wave + Firebug + lots of time will do it

On Mon, Nov 1, 2010 at 8:06 AM, gopal bhalala gopalbhal...@gmail.comwrote:

Hi to all,

Any suggestion please...

Best Regards Thanking you,
Gopal Dhanjibhai Bhalala

On Sun, Oct 24, 2010 at 10:21 PM, Deepak Singh
deepaksingh...@gmail.comwrote:

I also need to know the frame which has been used in Google wave. Anybody
who can give idea about how to create such type of custom components or
anything similar available to use.

Thanks
Deepak

On Sun, Oct 24, 2010 at 2:23 PM, gopal bhalala
gopalbhal...@gmail.comwrote:

Hi to all,

Any body knows framework or another stuff which is provides Wave styled
widgets

Best Regards Thanking you,
Gopal Dhanjibhai Bhalala

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Re: java.lang.NoClassDefFoundError: com/google/gdata/util/ServiceException

2010-11-01 Thread Eyal

OK, I narrowed it down a bit. My DataFeedManager has some Analytics
code in it. When I removed it, everything was fine. So I guess this is
an issue of integrating GWT and Analytics? How do I get my GWT to feel
comfortable with Analytics code in the business layer?

Thanks,
Eyal

On Nov 1, 6:31 pm, Eyal twoworldsf...@gmail.com wrote:
 Hi All,

 I'm new to this, and I'm trying to use my Manager class in a GWT
 module. I'm using Eclipse 3.6 with the latest GWT plugin and
 generating a project from it.

 In my GreetingServiceImpl I have a method,      public String
 getDataFeed() throws IllegalArgumentException, that tries to
 instantiate my DataFeedManager class through a default constructor.
 That default constructor is currently doing nothing at all -- it's
 just there for my testing. But when I'm attempting to do
 DataFeedManager dfm = new DataFeedManager() I'm getting the
 following:

 Service method 'public abstract java.lang.String
 com.eyes.client.GreetingService.getDataFeed() throws
 java.lang.IllegalArgumentException' threw an unexpected exception:
 java.lang.NoClassDefFoundError: com/google/gdata/util/ServiceException

 What am I doing wrong? Researching this I saw that people were helped
 by adding google-collect-1.0-rc1.jar to the build path and I added it
 but I still get the above error.

 Any help will be greatly appreciated.

 Eyal

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Re: Announcing GWT 2.1

Hey Jeff,

Can you elaborate on what you mean by syncing views and presenters
during development? Are you saying there's too much boilerplate such
that Roo is the only practical alternative? If so, which boilerplate
classes most concern you? We welcome discussion on ways to simplify.
We definitely aim to make place mapping easier.

Thanks,
/dmc

On Mon, Nov 1, 2010 at 12:28 PM, Jeff Schwartz jefftschwa...@gmail.com wrote:
 Thanks, David, for clarifying this.

 If at any time it may have seemed that I was implying that there was was any
 static dependency between Roo or Spring DI and GWT let me say that I know
 there isn't. There is, though, an implied dynamic dependency between Roo,
 Spring DI  MVP if one wants to synchronize their views and presenters
 during development as per the Expenses example project. I say implied
 because at this time it appears that the only available option to achieve
 this is by using Roo but I am sure that there will be additional options
 coming down the pike:).

 I am also very pleased to know that there will be improved tooling in the
 Eclipse plugin. I spend more time using Eclipse than I do with my family lol
 so it is reassuring to know that this will evolve.

 Again, thank you.

 Jeff

 On Mon, Nov 1, 2010 at 11:56 AM, David Chandler drfibona...@google.com
 wrote:

 Hi Jeff,
 GWT 2.1 has no dependency on Roo. It is very much our intent that you
 should be able to create GWT apps with or without Roo. The latter offers
 some conveniences for certain types of apps like CRUD apps where you have,
 say, 40 entities, each with corresponding CRUD screens, and a view,
 presenter, RequestContext, DAO, etc. for each. In this example, the need for
 concrete classes per entity ultimately results from the fact that code
 generation (whether via GWT generator or Roo) is GWT's alternative to
 reflection. GWT 2.1 does not require much boilerplate and 2.1.1 will require
 even less. And yes, improved tooling in Google Plugin for Eclipse is
 definitely on radar.
 As far as DI is concerned, DI proper is not the cause of cold start
 latency on App Engine, but rather one particular scenario in which
 singletons are created eagerly at startup time. I wrote about this on my
 personal blog (http://turbomanage.wordpress.com) linked above. This should
 become much less of an issue shortly
 (per http://code.google.com/p/googleappengine/issues/detail?id=2456), as it
 appears the GAE team is close to releasing warmup requests, and reserved
 instances are on the roadmap.
 Best,
 /dmc

 On Mon, Nov 1, 2010 at 9:04 AM, Jeff Schwartz jefftschwa...@gmail.com
 wrote:


 On Mon, Nov 1, 2010 at 8:22 AM, Thomas Broyer t.bro...@gmail.com wrote:

 Well, except that Guice for instance (and I believe JavaEE 6 too, as
 it's based on JSR 330, lead by Bob Lee, creator of Guice) does not use
 an XML file.

 Yes however I was specifically speaking to Spring DI.

 Isn't that somehow due to Spring insisting in everything should be a
 singleton (and eagerly instantiating them)?


 I believe so, yes.

 My concerns aren't with MVP; from what I have read I think MVP is a very
 good design pattern  I am eager to incorporate it. My concerns are more
 aligned with the dependency on Roo  STS (which I use for Groovy and for
 Grails development  which I really like) to accomplish syncing Views 
 Presenters. I would have preferred a pure Java solution such as relying on
 the compiler and code refactoring to generate binding code where needed.

 Jeff

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Re: Communication with the Server + MVP

Hi Bruno,

MVP and server communication are completely independent of each other.
You can use GWT-RPC or the new RequestFactory to communicate with the
server.

HTH,
/dmc

On Mon, Nov 1, 2010 at 12:54 PM, Bruno Santos bruegosan...@gmail.com wrote:
 I saw the new way of using the MVP on the
 'http://code.google.com/intl/pt-BR/webtoolkit/doc/latest/DevGuideMvpActivitiesAndPlaces.html',
 but I have a question, how do I make a communication with the server?

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Are there any examples how to use @UiChild ?

2010-11-01 Thread Paul Stockley

I can't find much documentation of the use of @UiChild. Does anyone
have any examples?

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change parent of a node in a CellTree

2010-11-01 Thread Rodrigue

Hi!

did someone already modify successful a celltree's structure
programmatically?  I want to change the parent of a node
programmatically and see the changes displayed on the screen. What I
do now is the following:
•   remove the considered node's value from the old parent's
ListDataProvider using ListDataProvider#getList()#remove ().
•   add the considered node's value to the new parent's ListDataProvider
using ListDataProvider#getList()#add()
•   call ListDataProvider#refresh on both old and new parent
ListDataProviders.

I expected to see the old node move from the old to the new parent.
But what occurs instead, is that the node I wanted to move just
disappear from the tree.
What can be the problem?

And I would also like to know, if there is a way to tell to a CellTree
to redraw itself because the backed data have changed.

Thanks for any help.
Rodrigue

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Re: Good GWT development tools

2010-11-01 Thread gsl1

I ran into this recently and found that if I added the following
before the set-property element, I did not receive the error:

extend-property name=locale values=en/extend-property

  -= Gregg =-

On Oct 11, 1:15 pm, Greg Dougherty dougherty.greg...@mayo.edu wrote:
  Reduce the number of compiled locales by adding this line to your
  *.gwt.xml file
  set-property name=locale value=en/

  So now only english locale is compiled

 [ERROR]The value en was not previously defined.
 [ERROR] Line 23: Unexpected exception while processing element 'set-
 property'

 So, what else do I need to add?

 Greg

 On Oct 11, 8:20 am, Georg Sendt georg.se...@googlemail.com wrote:

  Do you really need to compile your project every time you do a change?
  Does hosted mode not work for you?

  You can reduce the compilation time by reducing the list of supported
  browsers:

  add set-property name=user.agent value=gecko/ to your *.gwt.xml
  file to only support Firefox during your development.

  For integration tests you can remove the  line and test your
  application with all browsers.

  Reduce the number of compiled locales by adding this line to your
  *.gwt.xml file
  set-property name=locale value=en/

  So now only english locale is compiled

  Regards,

  Georg

  On 11 Okt., 11:36, lalit lalit.bh...@gmail.com wrote:

   Our project with time has become bigger. We are finding that the
   change-compile-run cycle is becoming bigger and bigger, especially
   if we change the server side code.

   We are using Spring, Hibernate and Gilead (for taking Entities to the
   front layer).

   Do any one knows about better tools or processes where we can reduce
   the change-compile-run cycle.

   thanks in advance,

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Re: Communication with the Server + MVP

2010-11-01 Thread Bruno Santos

Thanks for the reply David, but what I want to know is how to pass
values from the screen to the server and the server to the screen in
the old way of MVP in the following page
'http://code.google.com/intl/pt-BR/webtoolkit/articles/mvp-architecture-2.html'
shows an example of how to communicate, but not in the new mode.

What I wanted was an example of how to pass values from the screen to
the server.

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Re: List editing with Editor/RequestFactory + GAE/Objectify

2010-11-01 Thread Tobias

Thanks David,

I now used the same pattern for retrieving the collection and
implemented my getIngredients() method in a similar way. However I am
still stuck on how to add an element to the list, so that the Editor
framework notices it and appends a table row. On my page I basically
have a CellTable that's wrapped with a HasDataEditor, and an Add
elem button, which is supposed to add new (blank) entries to the
CellTable.
I found that the HasDataEditor uses a ListEditorWrapper. This
wrapper's purpose seems to synchronize the data list with the editor
display, in my case the CellTable. But how to I add elements to the
data list?
I tried using the RequestFactory to add ingredients on the server, but
this does not trigger any refresh on the Editor, the new ingredients
do not show up until the next page refresh. Ok, that's kinda obvious
since the RequestFactory can't know that this changed the Recipe and
therefore the RecipeProxy needs an update.
So my next try was to get a new valid IngredientProxy object as a
response from appending a new Ingredient in the server and adding it
to the RecipeProxy like this

recipeProxy.getIngredients().add(addedIngredient);

No exceptions, but also there does not seem to be any magic that would
cause a refresh of the editors in this case either.
I finally had some success by using the RequestContext to create a new
ingredient on the server and directly adding the returned proxy to the
observed ListEditorWrapper like this:
requests.recipeRequest().addIngredient().using(recipe)
.fire(new ReceiverIngredientProxy() {

@Override
public void onSuccess(IngredientProxy 
response) {

view.ingredientsEditor().getList().add(response);
}
});

I doubt that this is the way to go, since it introduces some tight
coupling and also, I cannot edit list entries that I created this way,
it gets me a java.lang.IllegalStateException: The AutoBean has been
frozen. I guess I must make the new proxy somehow part of the Request
that the Driver works on?

I guess I am not really getting how the Editor-framework works. I've
worked with a couple of databinding solutions before, mostly JFace,
but I am stuck on this one. I find it particularly hard to figure
things out because of the rebinding that's going on.

Thanks in advance,
Tobias

On Nov 1, 5:26 pm, David Chandler drfibona...@google.com wrote:
 Hi Tobias,

 The RequestFactory sample apps in GWT 2.1 use JDO and JPA because
 these are the Java persistence APIs offered by App Engine; however,
 RequestFactory has no dependency on them, and you can use Objectify
 instead. RequestFactory won't be able to serialize the Objectify Key
 object so you should expose only convenience methods like getParent()
 below that know how to map the key to the actual entity. Here's an
 example that exposes only RequestFactory-safe methods:

 @ProxyFor(ListItem.class)
 public interface ListItemProxy extends EntityProxy
 {
         Long getId();
         String getItemText();
         void setItemText(String itemText);
         void setParent(ItemListProxy editList);
         ItemListProxy getParent();

 }

 @Entity
 public class ListItem
 {
     @Id private Long id;
     private String itemText;
     @Version
     private Integer version;
     // Dummy field due to JsonRequestProcessor:1543
     transient private ItemList parent;
     // Real parent key used by Objectify
     @Parent private KeyItemList parentKey;

 public ListItem()
 {
      // No-arg constructor required

 }

 public void setParent(ItemList parent)
 {
     this.parentKey = new ItemListDao().key(parent);

 }

 public ItemList getParent()
 {
     try
     {
         return new ItemListDao().get(parentKey);
     }
     catch (EntityNotFoundException e)
     {
         e.printStackTrace();
     }
     return null;

 }
 }

 HTH,
 /dmc









 On Mon, Nov 1, 2010 at 10:14 AM, Tobias thaberm...@gmail.com wrote:

  Hi,

  to get accustomed to GAE as well as GWT 2.1, I am working on a pet
  project for managing Recipes. A Recipe has multiple Ingredients, which
  I want to display in a CellTable, each Ingredient having (editable)
  columns for Amount and Type. New Ingredient lines in the table can be
  added with a button, existing ingredients can be removed and reordered
  by buttons (or DnD later).
  So now I am trying to figure out how to wire this up with the Editor
  framework and RequestFactory on the Client-side and the GAE datastore
  and Objectify (or JDO, if that makes it any easier). I created some
  dummy Recipe object with a getIngredients()-list with some dummy
  Ingredients and managed to get the CellTable populated with these by
  the Editor driver automatically.

  What I do not understand however is how far this databinding goes? How
  would I

composite headers in celltable

2010-11-01 Thread Stephen Haberman

Hey,

Has anyone done composite headers with the new CellTable?

I'd like to use CompositeCell, but I'm having a hard time turning my
list of individual Headers into a ListHasCell specifically because
Header's valueUpdater is private.

If you look at HasCell, it exposes the it's FieldUpdater for the
composite cell to grab in it's on onBrowserEvent handling. I'd like to
make a fake FieldUpdater for a header, but I cannot access it's
valueUpdater.

(My use case is having a header with text + a checkbox. I can use
CheckboxCell semi-successfully, but without being able to provide
CompositeCell with a dummy FieldUpdater, I'm unable to react to
any changes to the checkbox.)

Thanks,
Stephen

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Re: Sporadic ClassCastException

2010-11-01 Thread Fred Sauer

Have you tried setting an uncaught exception handler?

You can use gwt-log (http://code.google.com/p/gwt-log/) to do this:

 public void onModuleLoad() {

Log.setUncaughtExceptionHandler();

DeferredCommand.addCommand(new Command() {

  public void execute() {

onModuleLoad2();
  }

});
  }

  private void onModuleLoad2() {

// Your client code goes here
  }




Or, you can use this rudimentary approach:

 public void onModuleLoad() {

// set uncaught exception handler
GWT.setUncaughtExceptionHandler(new GWT.UncaughtExceptionHandler() {

  public void onUncaughtException(Throwable throwable) {

String text = Uncaught exception: ;

while (throwable != null) {

  StackTraceElement[] stackTraceElements = throwable.getStackTrace();

  text += throwable.toString() + \n;

  for (int i = 0; i  stackTraceElements.length; i++) {

text += at  + stackTraceElements[i] + \n;

  }
  throwable = throwable.getCause();

  if (throwable != null) {

text += Caused by: ;

  }
}

DialogBox dialogBox = new DialogBox(true, false);

DOM.setStyleAttribute(dialogBox.getElement(),
backgroundColor, #ABCDEF);

System.err.print(text);

text = text.replaceAll( , nbsp;);

dialogBox.setHTML(pre + text + /pre);

dialogBox.center();

  }
});

// use a deferred command so that the handler catches
onModuleLoad2() exceptions
DeferredCommand.addCommand(new Command() {

  public void execute() {

onModuleLoad2();
  }

});
  }

  private void onModuleLoad2() {

// .

 }



Fred

On Mon, Oct 25, 2010 at 2:14 AM, Carl c...@rahmstrom.com wrote:

 Hi, I sporadically receive the exception shown below or simular. This
 is in development mode. I'm not sure about production mode. Is there a
 way to catch all exceptions in GWT?

 I don't see any of my lines in the exception and wonder what I can do
 to avoid this in the future.

 I use GWT 2.0.4, OS X 10.6.4 and Safari 5.0.2.

 java.lang.ClassCastException: null
at java.lang.Class.cast(Class.java:2990)
at com.google.gwt.dev.shell.JsValueGlue.get(JsValueGlue.java:166)
at
 com.google.gwt.dev.shell.MethodDispatch.invoke(MethodDispatch.java:57)
at

 com.google.gwt.dev.shell.OophmSessionHandler.invoke(OophmSessionHandler.java:
 157)
at

 com.google.gwt.dev.shell.BrowserChannel.reactToMessagesWhileWaitingForReturn(BrowserChannel.java:
 1714)
at

 com.google.gwt.dev.shell.BrowserChannelServer.invokeJavascript(BrowserChannelServer.java:
 165)
at
 com.google.gwt.dev.shell.ModuleSpaceOOPHM.doInvoke(ModuleSpaceOOPHM.java:
 120)
at
 com.google.gwt.dev.shell.ModuleSpace.invokeNative(ModuleSpace.java:
 507)
at
 com.google.gwt.dev.shell.ModuleSpace.invokeNativeObject(ModuleSpace.java:
 264)
at

 com.google.gwt.dev.shell.JavaScriptHost.invokeNativeObject(JavaScriptHost.java:
 91)
 at com.google.gwt.core.client.impl.Impl.apply(Impl.java)
at com.google.gwt.core.client.impl.Impl.entry0(Impl.java:188)
 at sun.reflect.GeneratedMethodAccessor95.invoke(Unknown Source)
 at

 sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:
 25)
at java.lang.reflect.Method.invoke(Method.java:597)
at
 com.google.gwt.dev.shell.MethodAdaptor.invoke(MethodAdaptor.java:103)
at
 com.google.gwt.dev.shell.MethodDispatch.invoke(MethodDispatch.java:71)
at

 com.google.gwt.dev.shell.OophmSessionHandler.invoke(OophmSessionHandler.java:
 157)
at

 com.google.gwt.dev.shell.BrowserChannel.reactToMessages(BrowserChannel.java:
 1669)
at

 com.google.gwt.dev.shell.BrowserChannelServer.processConnection(BrowserChannelServer.java:
 401)
at

 com.google.gwt.dev.shell.BrowserChannelServer.run(BrowserChannelServer.java:
 222)
 at java.lang.Thread.run(Thread.java:680)

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-- 
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Developer Advocate
Google Inc.
1600 Amphitheatre Parkway
Mountain View, CA 94043
fre...@google.com

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Re: Role based Security in GWT: how to implement ?

2010-11-01 Thread Rodrigue

Hi Zixzigma,

I'm facing exactly the same problem like you with the difference, that
the solution you found doesn't work by me. That is why, I would like
to know if you you call the methods #refresh() or #flush() after you
added the new element to the DataProvider.

Thanks for your answer.
Rodrigue

On Oct 30, 10:35 am, zixzigma zixzi...@gmail.com wrote:
 Hello everyone,

 I have some questions regarding implementing security in GWT.

 It's a typical use case:
 let's say in your app, users can have different roles,
 and you want to show only the relevant part of the UI, based on their
 role.

 and I am talking about more than 3 roles.
 eg:(Customer, BranchManager, Teller, CEO, System Admin)
 (after all GWT is for larger apps, right ? )

 on the back-end, i am planning to use Spring, and i'm going to use
 Spring Security,
 for authentication, fine-grained authorization, (method level, ACL),
 it is a very mature framework and annotation based.

 however, when it comes to the front-end UI, I don't know what is the
 recommended practice to incorporate role-based security in MVP. (i
 don't want the security checks get scattered across all methods on the
 client, bloated code, if statements everywhere, security is a cross-
 cutting concern, right? should i put it in the Activity/Presenter ?)

 I see GWT 2.1 release addresses security concerns, for cross-site
 scripting, and introducing SafeHtml.
 but nothing related to authorization.

 I would appreciate your insights and any feedback from google team,
 perhaps a tutorial addressing this aspect of application security is
 really needed !

 is it possible for GWT team to introduce annotation-based support for
 addressing security ?
 does it make sense at all, or i'm missing something.

 what have been your experiences in implementing security in GWT ?

 Thank You

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Re: change parent of a node in a CellTree

There is a bug associated with inserting a value into the tree, but calling
refresh() on the ListDataProvider should workaround the issue. Do you have
any more info that might help debug it?

And I would also like to know, if there is a way to tell to a CellTree to
redraw itself because the backed data have changed.

Not currently. You have to call refresh() on all the ListDataProviders.

Thanks,
John LaBanca
jlaba...@google.com

On Mon, Nov 1, 2010 at 12:46 PM, Rodrigue rlag...@googlemail.com wrote:

Hi!

did someone already modify successful a celltree's structure
programmatically? I want to change the parent of a node
programmatically and see the changes displayed on the screen. What I
do now is the following:
• remove the considered node's value from the old parent's
ListDataProvider using ListDataProvider#getList()#remove ().
• add the considered node's value to the new parent's
ListDataProvider
using ListDataProvider#getList()#add()
• call ListDataProvider#refresh on both old and new parent
ListDataProviders.

I expected to see the old node move from the old to the new parent.
But what occurs instead, is that the node I wanted to move just
disappear from the tree.
What can be the problem?

And I would also like to know, if there is a way to tell to a CellTree
to redraw itself because the backed data have changed.

Thanks for any help.
Rodrigue

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Image Update Memory Leak

2010-11-01 Thread hermis

Hello,

I have written a simple application which fills a FlexTable with a set
of images. There is a timer which updates the URL of each image every
second. The URL points to a Servlet which in turn generates a random
PNG image on its doGet() method and writes it to the response output
stream. The servlet sets the Cache-Control header to No-Cache.

When I run the webapp in IE7 / 8 the memory gradually increases.
Leaving it overnight can get it close to 1Gb.

Here is the client code:

#

public class LeakyApp implements EntryPoint
{
public static final String IMAGE_SERVLET_NAME = imageServlet;

public void onModuleLoad()
{
leak();
}

private void leak()
{
UrlBuilder urlBuilder = createUrlBuilder();

final FlexTable table = new FlexTable();

final ListImage lstImages = createAndAddImages(5,10 ,table );

final String strURL = urlBuilder.buildString();

final Timer timer = new Timer(){

int nCounter = 0;

@Override
public void run()
{
for (Image img : lstImages)
{
img.setUrl( strURL + ? + nCounter++) ;
}
}
};

final Button btnStartLeak = new Button(Leak);
btnStartLeak.addClickHandler( new ClickHandler()
{
@Override
public void onClick(ClickEvent event)
{
RootPanel.get().remove( btnStartLeak );
RootPanel.get().add( table );
timer.scheduleRepeating( 1000 );
}
});

RootPanel.get().add( btnStartLeak );
}

private ListImage createAndAddImages(int rowCount, int colCount,
FlexTable table)
{
ListImage lstImages = new ArrayListImage();

for(int row = 0; rowrowCount; row++)
{
for(int col = 0; colcolCount; col++)
{
Image image = new Image();
lstImages.add( image );
table.setWidget(row, col, image);
}
}

return lstImages;
}

private UrlBuilder createUrlBuilder()
{
UrlBuilder urlBuilder = null;

if( GWT.isScript() )
{
urlBuilder = new UrlBuilder();
urlBuilder.setHost( Window.Location.getHost() );
urlBuilder.setPath( Window.Location.getPath() +
IMAGE_SERVLET_NAME );
}
else
{
urlBuilder = Window.Location.createUrlBuilder();
urlBuilder.setPath( IMAGE_SERVLET_NAME );
}

return urlBuilder;
}
}



Here is the servlet code:



public class ImageServlet extends HttpServlet
{
private int nCounter = 0;
private Font font = new Font(Tahoma, Font.BOLD, 10);

private static Color getRandomColor()
{
int r = (int)(Math.random()* 255);
int g = (int)(Math.random()* 255);
int b = (int)(Math.random()* 255);

return new Color(r,g,b);
}

@Override
protected void doGet ( HttpServletRequest request,
HttpServletResponse response ) throws IOException
{

OutputStream out = response.getOutputStream();

response.setContentType(image/png);
response.addHeader(Pragma, no-cache);
response.addHeader(Cache-Control, no-cache);

ImageIO.write( generateRandomImage(), png, out );

out.close();
}

private BufferedImage generateRandomImage()
{
return generateRandomImage(80, 80);
}

private BufferedImage generateRandomImage(int width, int height)
{
BufferedImage image = new BufferedImage(width, height,
BufferedImage.TYPE_INT_ARGB);

Graphics2D g2d = image.createGraphics();
g2d.setFont( font );
g2d.setColor( getRandomColor() );
g2d.fillRect(0, 0, width, height);
g2d.setColor( Color.WHITE );
g2d.drawString( + nCounter, 20, 20);

System.err.println( img  + nCounter );

nCounter++;

if( nCounter == Integer.MAX_VALUE )
nCounter = 0;

return image;
}
}



Is there a programming error, or is it the nature of what the

RE: change parent of a node in a CellTree

Hi John,

 

I already call refresh after any data changes.

 

Rodrigue

 

From: google-web-toolkit@googlegroups.com
[mailto:google-web-tool...@googlegroups.com] On Behalf Of John LaBanca
Sent: Monday, November 01, 2010 6:58 PM
To: google-web-toolkit@googlegroups.com
Subject: Re: change parent of a node in a CellTree

 

There is a bug associated with inserting a value into the tree, but calling
refresh() on the ListDataProvider should workaround the issue.  Do you have
any more info that might help debug it?

 

And I would also like to know, if there is a way to tell to a CellTree to
redraw itself because the backed data have changed.

Not currently.  You have to call refresh() on all the ListDataProviders.


Thanks,
John LaBanca
jlaba...@google.com



On Mon, Nov 1, 2010 at 12:46 PM, Rodrigue rlag...@googlemail.com wrote:

Hi!

did someone already modify successful a celltree's structure
programmatically?  I want to change the parent of a node
programmatically and see the changes displayed on the screen. What I
do now is the following:
.   remove the considered node's value from the old parent's
ListDataProvider using ListDataProvider#getList()#remove ().
.   add the considered node's value to the new parent's ListDataProvider
using ListDataProvider#getList()#add()
.   call ListDataProvider#refresh on both old and new parent
ListDataProviders.

I expected to see the old node move from the old to the new parent.
But what occurs instead, is that the node I wanted to move just
disappear from the tree.
What can be the problem?

And I would also like to know, if there is a way to tell to a CellTree
to redraw itself because the backed data have changed.

Thanks for any help.
Rodrigue

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RE: change parent of a node in a CellTree

Hi John!

 

here the infos you need for debugging have been send directly to your
mailbox.

 

Rodrigue

 

From: google-web-toolkit@googlegroups.com
[mailto:google-web-tool...@googlegroups.com] On Behalf Of John LaBanca
Sent: Monday, November 01, 2010 6:58 PM
To: google-web-toolkit@googlegroups.com
Subject: Re: change parent of a node in a CellTree

 

There is a bug associated with inserting a value into the tree, but calling
refresh() on the ListDataProvider should workaround the issue.  Do you have
any more info that might help debug it?

 

And I would also like to know, if there is a way to tell to a CellTree to
redraw itself because the backed data have changed.

Not currently.  You have to call refresh() on all the ListDataProviders.


Thanks,
John LaBanca
jlaba...@google.com



On Mon, Nov 1, 2010 at 12:46 PM, Rodrigue rlag...@googlemail.com wrote:

Hi!

did someone already modify successful a celltree's structure
programmatically?  I want to change the parent of a node
programmatically and see the changes displayed on the screen. What I
do now is the following:
.   remove the considered node's value from the old parent's
ListDataProvider using ListDataProvider#getList()#remove ().
.   add the considered node's value to the new parent's ListDataProvider
using ListDataProvider#getList()#add()
.   call ListDataProvider#refresh on both old and new parent
ListDataProviders.

I expected to see the old node move from the old to the new parent.
But what occurs instead, is that the node I wanted to move just
disappear from the tree.
What can be the problem?

And I would also like to know, if there is a way to tell to a CellTree
to redraw itself because the backed data have changed.

Thanks for any help.
Rodrigue

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Re: turn off auto-completion suggestion box on uibinder ui.xml in eclipse

2010-11-01 Thread Rajeev Dayal

We put a fix into the final version of GPE 1.4.0 to resolve this issue. If
you wouldn't mind, can you grab the latest version, and try re-enabling
auto-completions to see if things have sped up for you?

On Thu, Oct 21, 2010 at 2:00 AM, Yau kvle...@gmail.com wrote:

 I found it.

 Preferences-XML-Editor-Automatically make suggestions.

 On Oct 21, 1:16 pm, Kevin (Yau) Leung kvle...@gmail.com wrote:
  I wonder if it's only me having this problem.  Whenever I edit the ui.xml
 in
  eclipse, the auto-completion box comes up and it's extraordinary slow.
  Is
  there any method to turn it off?
 
  Kevin

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Re: Communication with the Server + MVP

Bruno,

I'm not sure I understand. You can use an RPC service just as in the
article you linked. We're working on updating the Contacts sample app,
but in the mean time, I think you can just make ContactsPresenter
extend AbstractActivity and wire it as shown in
http://code.google.com/webtoolkit/doc/latest/DevGuideMvpActivitiesAndPlaces.html

Does that help?
/dmc

On Mon, Nov 1, 2010 at 1:31 PM, Bruno Santos bruegosan...@gmail.com wrote:
 Thanks for the reply David, but what I want to know is how to pass
 values from the screen to the server and the server to the screen in
 the old way of MVP in the following page
 'http://code.google.com/intl/pt-BR/webtoolkit/articles/mvp-architecture-2.html'
 shows an example of how to communicate, but not in the new mode.

 What I wanted was an example of how to pass values from the screen to
 the server.

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-- 
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Developer Programs Engineer, Google Web Toolkit
http://googlewebtoolkit.blogspot.com/

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Re: Serializing Enum with Marker Interface

2010-11-01 Thread Mike

If I move the interface into the Enum's package, the GWT compiler
appears happy.

Opened an issue:
http://code.google.com/p/google-web-toolkit/issues/detail?id=5520

Thanks!
Mike

On Oct 30, 2:59 am, Didier DURAND durand.did...@gmail.com wrote:
 Hi Mike,

 Probably an issue in the location of the various classes: can you tell
 us the packages that they belong to ?

 didier

 On Oct 29, 11:23 pm, Mike mikem2...@gmail.com wrote:

  I tried changing the line to:

  public enum Color implements IsConfigurable, Serializable

  and I'm still getting the same compile error.

  Thanks!
  Mike

  On Oct 29, 3:57 pm, Patrick Tucker tucker...@gmail.com wrote:

   The enum itself can implement Serializable

   On Oct 29, 2:41 pm, Mike mikem2...@gmail.com wrote:

How can I make an enum that implements a marker interface serializable
in GWT 2.0?

The below example:

public interface IsConfigurable
{

}

public enum Color implements IsConfigurable
{
    BLUE,
    RED;

}

Results in the following:
     [java] Compiling module com.colors
     [java]    Validating newly compiled units
     [java]       [ERROR] Errors in 'file:...Color.java'
     [java]          [ERROR] Line 7: The import ...IsConfigurable
cannot be resolved
     [java]          [ERROR] Line 12: IsConfigurable cannot be
resolved to a type
     [java]    Compiling 6 permutations
...

Thanks!
Mike

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Re: Injecting EventBus with GIN

2010-11-01 Thread Jack

1.) You should use EventBus instead of SimpleEventBus in your
I18NLabel.

2.) Is your MyWidgetGinjector really empty? If so, there should be at
least one method that gets called during app initialization
(onModuleLoad). So for example:

@GinModules(MyWidgetClientModule.class)
public interface MyWidgetGinjector extends Ginjector {
public MyAppMainPanel getApplicationPanel();
}

Also GIN will only inject the EventBus to your I18NLabel if the
I18NLabel itself has been injected into some other class that is
already managed by GIN (for example into MyAppMainPanel). If you do
so, then you may want to add a bind(I18NLabel.class) to your
GinModule. Currently your GinModule does not know I18NLabel and when
you try to inject that label into another class, then GIN will try to
create it with GWT.create(I18NLabel.class). But this will require a no-
arg default constructor in your I18NLabel...I guess thats why you got
the exception.

I hope that helps.


On 1 Nov., 15:31, xworker blomqvist.andr...@gmail.com wrote:
 Hi all

 Trying to inject the eventbus into a component but I'm getting the
 has no default (zero args) constructor. error. Any clues what I'm
 doing wrong? Very new to GIN, so it might be trivial..

 Here is my code:

 module:
 public class MyWidgetClientModule extends AbstractGinModule {
           protected void configure() {
                   
 bind(EventBus.class).to(SimpleEventBus.class).in(Singleton.class);

           }
         }

 injector:
 @GinModules(MyWidgetClientModule.class)
 public interface MyWidgetGinjector extends Ginjector {

 }

 and the component I trying to inject:
 public class I18NLabel extends Label implements
 ChangeLanguageEventHandler{

         private final SimpleEventBus eventBus;
         private String key;

         @Inject
         public I18NLabel(SimpleEventBus eventBus) {
                 this.eventBus = eventBus;
         }
 ...
 ...

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Re: Announcing gwt4air 1.0

2010-11-01 Thread rakesh wagh

How would it be different from using say Mozilla Prism? Prism does not
require anything special.

Rakesh Wagh

On Oct 31, 4:30 pm, nino ekambi jazzmatad...@googlemail.com wrote:
 Hello community,
 It s been a long way but i m proud to annouce the release of Gwt4Air 1.0
 Gwt4Air will give you the the ability to turn  your GWT apps in to desktop
 apps using adobe air.

 You can download the jar herehttp://code.google.com/p/gwt4air/.
 The first release is compatible with gxt 2.2, gwt 2.0 and adobe air 2. It
 includes the following features:

  1) Access to the core AIR APi from GWT, you basically can do anything you
 would do in actionscript or javascript.
  2) An adapter to make GXT(Ext-GWT) works inside the air application sandbox
  3) A pdf module to read and write pdf files.
  4) A google maps module, so you can produce maps even when your web client
 is offline
  5) An adapter to male RPC and RequestBuilder calls possible with AIR.
  6) A sample app with source code that shows some examples. One of the
 example is how you can export an GXT chart to pdf using gwt4air.

 The next releases will add more and more features(check out the roadmap)
 To get started you can check out the wiki page.

 I hope you guys are going to like this and provide some good feedbacks.
 For any question please feel free to contact me.

 best regards,

 Alain

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Re: Role based Security in GWT: how to implement ?

2010-11-01 Thread Jack

The only thing we do is some cross-site scripting prevention and
hiding user interface components if a user does not have the
permission for that component. So for example we only show the menu
items a user in a given role can access. Other menu items wont be
added to the menu widget. This is done in our presenters. Each time a
presenter gets active it asks the server for the permissions the
current user have.

But you can never trust the client and we have to make sure that a
user with a given role will get an exception if he asks the server for
information he has no permission for because an attacker can ask for
such information even if he does not have the corresponding menu item
in the client UI. So each time we got a server request, the server
retrieves the user account with its assigned roles and permissions and
checks them against a set of server-side defined permissions that are
required to do the request. If they don't match we throw an exception.


On 30 Okt., 10:35, zixzigma zixzi...@gmail.com wrote:
 Hello everyone,

 I have some questions regarding implementing security in GWT.

 It's a typical use case:
 let's say in your app, users can have different roles,
 and you want to show only the relevant part of the UI, based on their
 role.

 and I am talking about more than 3 roles.
 eg:(Customer, BranchManager, Teller, CEO, System Admin)
 (after all GWT is for larger apps, right ? )

 on the back-end, i am planning to use Spring, and i'm going to use
 Spring Security,
 for authentication, fine-grained authorization, (method level, ACL),
 it is a very mature framework and annotation based.

 however, when it comes to the front-end UI, I don't know what is the
 recommended practice to incorporate role-based security in MVP. (i
 don't want the security checks get scattered across all methods on the
 client, bloated code, if statements everywhere, security is a cross-
 cutting concern, right? should i put it in the Activity/Presenter ?)

 I see GWT 2.1 release addresses security concerns, for cross-site
 scripting, and introducing SafeHtml.
 but nothing related to authorization.

 I would appreciate your insights and any feedback from google team,
 perhaps a tutorial addressing this aspect of application security is
 really needed !

 is it possible for GWT team to introduce annotation-based support for
 addressing security ?
 does it make sense at all, or i'm missing something.

 what have been your experiences in implementing security in GWT ?

 Thank You

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GWT module 'applicationScaffold' may need to be (re)compiled -- Spring Roo

2010-11-01 Thread hifimusic

I've just installed STS 2.5.0 with spring roo 1.1.0 on an Ubuntu 9.10
machine

I've installed the gwt and datanucleus extensions.

I ran the expenses.roo script and it ran smoothly.

When i try to create a new spring roo project with persistence setup
--provider DATANUCLEUS --database GOOGLE_APP_ENGINE

The roo shell doesn't give any errors but when I debug as
webapplication and open it in firefox/chrome, I get the following
popup:

GWT module 'applicationScaffold' may need to be (re)compiled


I've tried to do update maven dependencies and google-gwt compile
but that doesn't help

I've tried this on another machine running ubuntu 10.04 and the same
problem occurs so it is reproducible.

Can anyone help me fix this?

Thanks!

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How to use i18n plural forms with UiBinder?

2010-11-01 Thread Potate

The plural forms feature is pretty nice. But I'm struggling to find an
example on how to use it with the UiBinder. Any pointers / examples
would be nice.

Thanks

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Re: GWT module 'applicationScaffold' may need to be (re)compiled -- Spring Roo

2010-11-01 Thread Rajeev Dayal

What is the URL that you're entering into your browser (after the Debug As)
step?

On Mon, Nov 1, 2010 at 3:18 PM, hifimusic akshat.k...@gmail.com wrote:

I've just installed STS 2.5.0 with spring roo 1.1.0 on an Ubuntu 9.10
machine

I've installed the gwt and datanucleus extensions.

I ran the expenses.roo script and it ran smoothly.

When i try to create a new spring roo project with persistence setup
--provider DATANUCLEUS --database GOOGLE_APP_ENGINE

The roo shell doesn't give any errors but when I debug as
webapplication and open it in firefox/chrome, I get the following
popup:

GWT module 'applicationScaffold' may need to be (re)compiled

I've tried to do update maven dependencies and google-gwt compile
but that doesn't help

I've tried this on another machine running ubuntu 10.04 and the same
problem occurs so it is reproducible.

Can anyone help me fix this?

Thanks!

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Re: Announcing gwt4air 1.0

2010-11-01 Thread nino ekambi

I think imho that air provides more functionality then prism when it comes
to desktop integration. AIR provides some desktop-like functionality like
local file access, SQL storage, communication with other programms on the
users machine etc.

As a result, AIR supports web apps that can be used offline and Prism does
not

Prism resembles bookmarks more than anything else. Except that the bookmark
is an icon on your computer and when you click on it, the browser doesn’t
have any toolbars. For me Prism provides nothing more than what any web
browser provides.

And like i said i m not trying to convince people to use AIR instead of any
other runtime out there.It comes down to your requirements.

We had customers who wanted to be able to work offline, generate pdf or
excel even when offline, export/import files to/from others tools. Those
are the things we could not do with Prism. Silverlight may have been an
option but we allready had a huge code base in GWT and were not willing to
rewrite everything.

We decided to go with AIR and it was good for us. And for those out there wo
hav the same requirements gwt4air can be a good help.

Greets,

Alain

2010/11/1 rakesh wagh rake...@gmail.com

How would it be different from using say Mozilla Prism? Prism does not
require anything special.

Rakesh Wagh

On Oct 31, 4:30 pm, nino ekambi jazzmatad...@googlemail.com wrote:
Hello community,
It s been a long way but i m proud to annouce the release of Gwt4Air 1.0
Gwt4Air will give you the the ability to turn your GWT apps in to
desktop
apps using adobe air.

You can download the jar herehttp://code.google.com/p/gwt4air/.
The first release is compatible with gxt 2.2, gwt 2.0 and adobe air 2. It
includes the following features:

1) Access to the core AIR APi from GWT, you basically can do anything
you
would do in actionscript or javascript.
2) An adapter to make GXT(Ext-GWT) works inside the air application
sandbox
3) A pdf module to read and write pdf files.
4) A google maps module, so you can produce maps even when your web
client
is offline
5) An adapter to male RPC and RequestBuilder calls possible with AIR.
6) A sample app with source code that shows some examples. One of the
example is how you can export an GXT chart to pdf using gwt4air.

The next releases will add more and more features(check out the roadmap)
To get started you can check out the wiki page.

I hope you guys are going to like this and provide some good feedbacks.
For any question please feel free to contact me.

best regards,

Alain

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Re: composite headers in celltable

2010-11-01 Thread Stephen Haberman


 I'd like to use CompositeCell, but I'm having a hard time turning my
 list of individual Headers into a ListHasCell specifically because
 Header's valueUpdater is private.

I ended up with a workable CompositeHeader:

http://github.com/stephenh/gwt-mpv/blob/master/user/src/main/java/org/gwtmpv/widgets/cellview/CompositeHeader.java

By hacking together an ExposedUpdaterHeader subclass:

http://github.com/stephenh/gwt-mpv/blob/master/user/src/main/java/org/gwtmpv/widgets/cellview/ExposedUpdaterHeader.java

I still find using cells within headers a little awkward because headers
aren't really flyweights--there is just 1 header row. Especially when
HasCell comes into play (because of CompositeCell), which assumes you
have a FieldUpdater/row type.

- Stephen

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GWT.runAsync issue

2010-11-01 Thread Deepak Singh

Hi,

I had an application which worked fine.
Then i went for optimisation and added GWT.runAsync() to possible places. It
fragmented the code well.
It still runs well in development mode but fails to invoke some of the rpc
in production running on tomcat 5.5
I observe it on firebug which shows, After i click the button to make rpc
call, it shows getting some *.js file from defered js but soon after it is
supposed to make rpc but it does not and call stops there.
However it works fine in development mode.

Any solution pls.

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Re: java.lang.NoClassDefFoundError: com/google/gdata/util/ServiceException

2010-11-01 Thread Eyal

I got it to work by moving the Analytics jars directly under WEB-INF/
lib. They were in a subfolder and apparently GWT can't handle that.

On Nov 1, 7:13 pm, Eyal twoworldsf...@gmail.com wrote:
 OK, I narrowed it down a bit. My DataFeedManager has some Analytics
 code in it. When I removed it, everything was fine. So I guess this is
 an issue of integrating GWT and Analytics? How do I get my GWT to feel
 comfortable with Analytics code in the business layer?

 Thanks,
 Eyal

 On Nov 1, 6:31 pm, Eyal twoworldsf...@gmail.com wrote:







  Hi All,

  I'm new to this, and I'm trying to use my Manager class in a GWT
  module. I'm using Eclipse 3.6 with the latest GWT plugin and
  generating a project from it.

  In my GreetingServiceImpl I have a method,      public String
  getDataFeed() throws IllegalArgumentException, that tries to
  instantiate my DataFeedManager class through a default constructor.
  That default constructor is currently doing nothing at all -- it's
  just there for my testing. But when I'm attempting to do
  DataFeedManager dfm = new DataFeedManager() I'm getting the
  following:

  Service method 'public abstract java.lang.String
  com.eyes.client.GreetingService.getDataFeed() throws
  java.lang.IllegalArgumentException' threw an unexpected exception:
  java.lang.NoClassDefFoundError: com/google/gdata/util/ServiceException

  What am I doing wrong? Researching this I saw that people were helped
  by adding google-collect-1.0-rc1.jar to the build path and I added it
  but I still get the above error.

  Any help will be greatly appreciated.

  Eyal

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mvn gwt:run for projects with external dependencies?

2010-11-01 Thread Alex Shabanov

Hi all,

I've solved the issue with using external library in GWT maven
project: 
http://groups.google.com/group/google-web-toolkit/browse_thread/thread/cd297accfad7c98
but I found that mvn gwt:run is not working. When I launch application
by using mvn gwt:run it seems that external library is not loaded by
GWT Development Mode utility.

The following errors are listed in the Application console:
00:00:01.753 [ERROR] Line 16: No source code is available for type
com.mysite.generic.traits.Constants; did you forget to inherit a
required module?

By the way, there is no problems with the deployed war, there is no
problems with Intellij Idea's GWT integration either.

It looks like I forgot to include subtle configuration parameter to
make gwt:run work, but I can't figure out which one.

I use GWT 2.0.4 and maven-gwt-plugin ver 1.3.1.google.

P.S.:
The sample application that reproduces the listed behavior is
available on google code:
svn co 
http://webkit-jspf.googlecode.com/svn/branches/gwt-external-lib-working1/tmp/maven/gwt-external-lib
gwt-external-lib

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Re: CellList row data - possible bug?

2010-11-01 Thread Rafi

Thank you Chris and John. Yes, that was somewhat counterintuitive ;),
but now I get the idea.

Best regards!

On 28 Paź, 15:46, Chris Conroy con...@google.com wrote:
 setRowData deals with the visible display of data. What you really want to
 do in this case is use a ListDataProvider. You can call setList on your
 ListDataProvider and it will handle the updating for you. Somewhat
 counter-intuitively, you add the display to the list provider--not the other
 way around.

 So...

 ListDataProvderFoo provider = new ListDataProviderFoo();
 provider.addDataDisplay(myCellList);
 provider.setList(list_with_5_elements);
 
 provider.setList(list_with_2_elements);







 On Thu, Oct 28, 2010 at 6:07 AM, Rafi rafal.fi...@gmail.com wrote:
  Hi!

  Either I do not get the idea or there is a little bug in CellList.

  Calling:
  setRowData(0, list_with_5_elements);

  Will show cell list with 5 elements.

  Then calling on the same CellList:
  setRowData(0, list_with_2_elements);

  Will show cell list containing 5(!) elements. First two items will be
  new one, other 3 items will be from old list. And I do not see any
  method to clear existing list. Setting an empty list as rowData of
  course does not do anything.

  Anyone knows is it designed behaviour or bug?

  Best regards,
  Rafal

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Re: GWT module 'applicationScaffold' may need to be (re)compiled -- Spring Roo

2010-11-01 Thread hifimusic

localhost:


On Nov 1, 3:18 pm, hifimusic akshat.k...@gmail.com wrote:
 I've just installed STS 2.5.0 with spring roo 1.1.0 on an Ubuntu 9.10
 machine

 I've installed the gwt and datanucleus extensions.

 I ran the expenses.roo script and it ran smoothly.

 When i try to create a new spring roo project with persistence setup
 --provider DATANUCLEUS --database GOOGLE_APP_ENGINE

 The roo shell doesn't give any errors but when I debug as
 webapplication and open it in firefox/chrome, I get the following
 popup:

 GWT module 'applicationScaffold' may need to be (re)compiled

 I've tried to do update maven dependencies and google-gwt compile
 but that doesn't help

 I've tried this on another machine running ubuntu 10.04 and the same
 problem occurs so it is reproducible.

 Can anyone help me fix this?

 Thanks!

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Re: Role based Security in GWT: how to implement ?


Thank you for your feedback.
Yes, i was very worried about the security on client-side.
However, as Jack pointed out,
what if you want to show certain features to certain users (based on
their role).
for example, if a user has admin privileges, show DELETEand UPDATE
button on the panel.
or if you have a StackPanel, you want to show the parts relevant to
user's role/access level.
can also be applied to Tabs, Trees, etc.

when the request gets to the server, server can decide whether to
perform an operation or not, based on the user access privileges. and
rightly so,  i agree.
however when it comes to showing relevant widgets on the client based
on user's access level, i dont think there is anything server can do
about it.

this is what im thinking in pseudo code:

if(user.canEdit()  user.canDelete())
mainPanel.add(deleteButton);
mainPanel.add(editButton);

or

if(user.isClerk)
mainPanel.add(clerkWorkspace)
else if (user.isBranchManager())
mainPanel.add(branchManagerWorkspace)


am i wrong in my apoproach ?
how do you handle such scenarios based on your experience ?

thank you for your insights.

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Re: GWT module 'applicationScaffold' may need to be (re)compiled -- Spring Roo

2010-11-01 Thread hifimusic

@Rajeev: After I read your reply, I tried using

http://127.0.0.1:/ApplicationScaffold.html?gwt.codesvr=127.0.0.1:9997

and it worked. I am still curious, however, why localhost: doesn't
work



On Nov 1, 6:16 pm, hifimusic akshat.k...@gmail.com wrote:
 localhost:

 On Nov 1, 3:18 pm, hifimusic akshat.k...@gmail.com wrote:







  I've just installed STS 2.5.0 with spring roo 1.1.0 on an Ubuntu 9.10
  machine

  I've installed the gwt and datanucleus extensions.

  I ran the expenses.roo script and it ran smoothly.

  When i try to create a new spring roo project with persistence setup
  --provider DATANUCLEUS --database GOOGLE_APP_ENGINE

  The roo shell doesn't give any errors but when I debug as
  webapplication and open it in firefox/chrome, I get the following
  popup:

  GWT module 'applicationScaffold' may need to be (re)compiled

  I've tried to do update maven dependencies and google-gwt compile
  but that doesn't help

  I've tried this on another machine running ubuntu 10.04 and the same
  problem occurs so it is reproducible.

  Can anyone help me fix this?

  Thanks!

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how to recognizing idle activity to fetch more data ?


Hello everyone,

How can Server talk to Client, silently in the background, without
user noticing ? to load more data ?
is this COMET/Ajax Push ?


or can we see it from the other end:
how can client notify server that user is idle, and time to fetch
data , data which user is probably going to access soon.

lets say you have a tree widget, which loads data asynchronously.
(could be any widget, lists (similar to google reader, or email's in
gmail)

in normal asynchronous fashion, everytime users click on a node, they
have to wait, for the child nodes to get populated with data coming
from server. user might continue playing around with some nodes to
find what they're looking for, but they have to wait for child nodes
to get populated.
(or in gmail's case, content of un-read email to get fetched).
one might want to fetch all data at once, but causes longer initial
wait time.

imagine, while user is reading an email, your app can silently fetch
the content of next 5 unread emails,
this has the benefit that, probably after user is done reading a new
email, might continue reading next, and instead of keeping him
waiting, you remain couple of steps ahead.


is there a way to detect idle user activity, and use it as an
opportunity to fetch more data while user is inactive ? i've seen in
one of google-developer's video, that google does such thing to gather
usage information.

have you implemented this in GWT ?

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GWT docs update needed

2010-11-01 Thread marius.andreiana

Hi,

Please update the link at 
http://code.google.com/webtoolkit/doc/latest/RefGWTClassAPI.html
to GWT 2.1 API docs.

Thanks

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Re: Announcing gwt4air 1.0


Hi Alain,

On 1 nov, 00:30, nino ekambi jazzmatad...@googlemail.com wrote:
 Hello community,
 It s been a long way but i m proud to annouce the release of Gwt4Air 1.0
 Gwt4Air will give you the the ability to turn  your GWT apps in to desktop
 apps using adobe air.

 You can download the jar here http://code.google.com/p/gwt4air/.

Er, RAR?!

 The first release is compatible with gxt 2.2, gwt 2.0 and adobe air 2. It
 includes the following features:

  1) Access to the core AIR APi from GWT, you basically can do anything you
 would do in actionscript or javascript.
  2) An adapter to make GXT(Ext-GWT) works inside the air application sandbox
  3) A pdf module to read and write pdf files.
  4) A google maps module, so you can produce maps even when your web client
 is offline
  5) An adapter to male RPC and RequestBuilder calls possible with AIR.
  6) A sample app with source code that shows some examples. One of the
 example is how you can export an GXT chart to pdf using gwt4air.

 The next releases will add more and more features(check out the roadmap)
 To get started you can check out the wiki page.

 I hope you guys are going to like this and provide some good feedbacks.
 For any question please feel free to contact me.

I don't really mind that you copied code from 
http://gwt-in-the-air.googlecode.com
as I've been bad at maintaining it and answering your concerns (I've
both lost interest in the project and don't really believe in AIR any
more actually, HTML5 is the way forward IMO); what I don't quite
like is that you're relicensing it under GPL without first asking me
(interestingly, you included Apache 2.0 COPYING files but added GPL
headers to the Java files). I'd have happily accepted patches, and
even given you the project if you asked for it and somehow showed
interest in maintaining (both fixing and enhancing) it.

I won't enter in a battle: I'm not a lawyer and I don't have time or
money to spend for it. In the end, I'd rather see my code used by
someone (even stolen that way) than not at all.

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Re: Are there any examples how to use @UiChild ?