Re: Problem compiling GWT code with Java9

[Dave Bradlee]

FYI. Google released a GWT update in October 
(http://www.gwtproject.org/release-notes.html#Release_Notes_2_8_2) that 
supposed includes fixes to allow it to work with Java9. We'll be trying 
that soon.

On Thursday, September 21, 2017 at 12:21:19 AM UTC-7, Thomas Broyer wrote:
>
> Fwiw, I confirm that HEAD-SNAPSHOT works with Java 9: 
> https://travis-ci.org/tbroyer/gwt-maven-plugin/jobs/277854932
>
> On Wednesday, September 20, 2017 at 10:06:51 AM UTC+2, Thomas Broyer wrote:
>>
>> There have been some changes [1,2] to make it (at least partially) work 
>> with a Java 9 VM; you can try HEAD-SNAPSHOT (from 
>> https://oss.sonatype.org/content/repositories/google-snapshots/) until 
>> we release 2.8.2 with the changes.
>>
>> [1] 
>> https://github.com/gwtproject/gwt/commit/87f27659af55d7d549521405ef10889e8dfe3f3a
>> [2] 
>> https://github.com/gwtproject/gwt/commit/5b7560c4bb6376e997981387e4f2feee1816e1dc
>>
>> On Wednesday, September 20, 2017 at 9:49:20 AM UTC+2, Pratik Parikh wrote:
>>>
>>> does anyone have an update on this sissu?  I am running into the same 
>>> problem, so an update would help.
>>>
>>> On Tuesday, June 13, 2017 at 12:08:29 PM UTC-4, James Nelson wrote:

 Hi.

 I am currently very busy this week, but can try to schedule a push to 
 maven central this weekend (I have other people waiting on it to use 
 various other tools I dabble in as well).

 Please remind me if I don't post links back here by next Monday.

 Worst case scenario, I can just upload jars to github and push a gist 
 of the pom I used, with some instructions on how to set the system 
 properties to make it work.

 I used the IDE to handle vm args, as standard maven plugins are less 
 amenable to hacking / debugging (though I'm sure it must be possible, I 
 did 
 not have enough free time to get that far on it).

 I'll probably update to latest java 9 spec, since the module system has 
 undergone another iteration since I tried these hacks.

 Please keep in mind, however, that my fork has diverged from mainline 
 for quite a while, and does not undergo the same rigorous testing that you 
 might expect.
 In particular, if you start using any of the other features I've added 
 (reflection, arbitrary magic method injection), it can break incremental 
 recompilations.
 It's a known issue I'm avoiding looking at, since most of the 2.X stack 
 is going to go away, and I have to migrate all my magic into 
 apt-generators 
 to run as a pre-gwtc stage.

 While I might be able to help you get something that works as a proof 
 of concept, I would urge you to hold off on using it in production, as I 
 am 
 not (yet) ready to offer fulltime support.
 A couple colleagues and I are playing with the idea of offering 
 fulltime support and maintenance of 2.X around mid-September (barring a 
 funding miracle for our current money-source).

 So, please take this caveats to heart; I can probably get you up and 
 compiling, but this should all be viewed as experimental and 
 not-production 
 ready for a while yet.

>>>

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Re: jsitenterop: elemental status

[Dave Puchyr]

That is great news!  Thanks for the quick reply.

On Saturday, March 18, 2017 at 11:06:49 AM UTC+1, Thomas Broyer wrote:
>
>
>
> On Saturday, March 18, 2017 at 9:15:55 AM UTC+1, Dave Puchyr wrote:
>>
>> I think that you make excellent points and have a very relevant question. 
>>  I'm a big fan of GWT, but I have to ask the GWT powers that be: Is 
>> elemental2 like the vaporware that singularity turned out to be?
>>
>
> I don't have details (ETA, etc.) but I can assure you Elemental 2 is not 
> vaporware.
> There are legal issues on Google side before opensourcing things, and work 
> to make things "consumable" by us outside Google (they have their own build 
> tool and source organization so things need to be extracted and transformed 
> before they can be loaded to GitHub); but it's coming (I had discussions 
> with Googlers on how best to do it)
>

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Re: jsitenterop: elemental status

[Dave Puchyr]

I think that you make excellent points and have a very relevant question. 
 I'm a big fan of GWT, but I have to ask the GWT powers that be: Is 
elemental2 like the vaporware that singularity turned out to be?

Dave

On Monday, March 6, 2017 at 3:14:27 PM UTC+1, Vassilis Virvilis wrote:
>
> Hi,
>
> As someone who has spent some time writing bindings for jquery, d3, 
> datatables etc I believe that is not possible to create meaningful bindings 
> automatically. Furthermore I don't believe that javascript browser bindings 
> change so fast that need to be automated.
>
> I may be wrong of course.
>
> However all further work is hindered by the fact that elemental has not 
> been officially released.
>
> So what is the current status of elemental2?
>
> Thanks
>
> -- 
> Vassilis Virvilis
>

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Problem compiling GWT code with Java9

[Dave Bradlee]

java]PersistentUnitCache cleanup requested
 [java]Added 3794 units to PersistentUnitCache since last cleanup

Anyway, has anyone else tried to compile GWT code with Java9? Or any ideas 
how we might make the compiler happy?

Thanks!

-- Dave


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Re: JsInterop JSON.parse()ed object differs from JSNI JSON.parse()ed object

[Dave Puchyr]

It's a financial charting library that "aligns" the bars based on the 
opening time of the exchange.  By "aligns" I mean changes the timestamp.

On Saturday, December 31, 2016 at 3:52:02 PM UTC+1, Ignacio Baca 
Moreno-Torres wrote:
>
> Hehe I'm curious too. What obscure library was modifying your json, and 
> how?
>
> El sáb., 31 dic. 2016 13:37, Vassilis Virvilis  > escribió:
>
>> So why it did it in the one case but not in the other? Were you calling 
>> the third party js explicitly in the one case?
>>
>> On Sat, Dec 31, 2016 at 1:04 PM, Dave Puchyr > > wrote:
>>
>>> After stepping through the compiled js I found that a third party 
>>> (obfuscated) js library manipulated the timestamps on me.  JsInterop is 
>>> fine. :)  Sorry for the noise.
>>>
>>>
>>> On Saturday, December 31, 2016 at 11:20:43 AM UTC+1, Dave Puchyr wrote:
>>>>
>>>> Even when I reduce the json input to
>>>>
>>>>
>>>> {"Contract":"STK:USD:PBA@NYSE","action":"onHistoricalData","bar":"D","bars":[{"time":1451952000},{"time":1452038400},{"time":1452124800}],"callback":4,"metadata":{"noData":false},"t":1483179318,"t0":1452075258,"ticker":"STK:USD:PBA@NYSE"}
>>>>
>>>> the time properties are still 160740 in the JsInterop parsed 
>>>> object. Thanks for the suggestion, though.
>>>>
>>>> On Saturday, December 31, 2016 at 8:40:58 AM UTC+1, Paul Robinson wrote:
>>>>>
>>>>> Have you tried modifying/simplifying the JSON to see what your odd 
>>>>> behaviour is sensitive to?
>>>>>
>>>>> Paul 
>>>>>
>>>> -- 
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>>
>>
>>
>> -- 
>> Vassilis Virvilis
>>
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>>
>

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Re: JsInterop JSON.parse()ed object differs from JSNI JSON.parse()ed object

[Dave Puchyr]

The 3rd party code was being called implicitly when I fired the message on 
the event bus.

On Saturday, December 31, 2016 at 1:37:29 PM UTC+1, Vassilis Virvilis wrote:
>
> So why it did it in the one case but not in the other? Were you calling 
> the third party js explicitly in the one case?
>
> On Sat, Dec 31, 2016 at 1:04 PM, Dave Puchyr  > wrote:
>
>> After stepping through the compiled js I found that a third party 
>> (obfuscated) js library manipulated the timestamps on me.  JsInterop is 
>> fine. :)  Sorry for the noise.
>>
>>
>> On Saturday, December 31, 2016 at 11:20:43 AM UTC+1, Dave Puchyr wrote:
>>>
>>> Even when I reduce the json input to
>>>
>>>
>>> {"Contract":"STK:USD:PBA@NYSE","action":"onHistoricalData","bar":"D","bars":[{"time":1451952000},{"time":1452038400},{"time":1452124800}],"callback":4,"metadata":{"noData":false},"t":1483179318,"t0":1452075258,"ticker":"STK:USD:PBA@NYSE"}
>>>
>>> the time properties are still 160740 in the JsInterop parsed 
>>> object. Thanks for the suggestion, though.
>>>
>>> On Saturday, December 31, 2016 at 8:40:58 AM UTC+1, Paul Robinson wrote:
>>>>
>>>> Have you tried modifying/simplifying the JSON to see what your odd 
>>>> behaviour is sensitive to?
>>>>
>>>> Paul 
>>>>
>>> -- 
>> You received this message because you are subscribed to the Google Groups 
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>>
>
>
>
> -- 
> Vassilis Virvilis
>

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Re: JsInterop JSON.parse()ed object differs from JSNI JSON.parse()ed object

[Dave Puchyr]

After stepping through the compiled js I found that a third party 
(obfuscated) js library manipulated the timestamps on me.  JsInterop is 
fine. :)  Sorry for the noise.

On Saturday, December 31, 2016 at 11:20:43 AM UTC+1, Dave Puchyr wrote:
>
> Even when I reduce the json input to
>
>
> {"Contract":"STK:USD:PBA@NYSE","action":"onHistoricalData","bar":"D","bars":[{"time":1451952000},{"time":1452038400},{"time":1452124800}],"callback":4,"metadata":{"noData":false},"t":1483179318,"t0":1452075258,"ticker":"STK:USD:PBA@NYSE"}
>
> the time properties are still 160740 in the JsInterop parsed object. 
> Thanks for the suggestion, though.
>
> On Saturday, December 31, 2016 at 8:40:58 AM UTC+1, Paul Robinson wrote:
>>
>> Have you tried modifying/simplifying the JSON to see what your odd 
>> behaviour is sensitive to?
>>
>> Paul 
>>
>

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Re: JsInterop JSON.parse()ed object differs from JSNI JSON.parse()ed object

[Dave Puchyr]

Even when I reduce the json input to

{"Contract":"STK:USD:PBA@NYSE","action":"onHistoricalData","bar":"D","bars":[{"time":1451952000},{"time":1452038400},{"time":1452124800}],"callback":4,"metadata":{"noData":false},"t":1483179318,"t0":1452075258,"ticker":"STK:USD:PBA@NYSE"}

the time properties are still 160740 in the JsInterop parsed object. 
Thanks for the suggestion, though.

On Saturday, December 31, 2016 at 8:40:58 AM UTC+1, Paul Robinson wrote:
>
> Have you tried modifying/simplifying the JSON to see what your odd 
> behaviour is sensitive to?
>
> Paul 
>

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Re: JsInterop JSON.parse()ed object differs from JSNI JSON.parse()ed object

[Dave Puchyr]

Thanks

On Friday, December 30, 2016 at 12:12:56 AM UTC+1, Dave Puchyr wrote:
>
> Parsing the following JSON input and sending the resulting object to the 
> console yields the expected results for a JSNI JSON.parse() but yields 
> incorrect timestamps using a JsInterop JSON.parse() (with correct results 
> for all other properties).  I'm completely at a loss as to why.  Any 
> suggestions?
>
> Input:
>
>
> {"Contract":"STK:USD:PBA@NYSE","action":"onHistoricalData","bar":"D","bars":[{"close":21.76,"high":21.84,"low":21.38,"open":21.41,"time":145152,"volume":3067},{"close":21.56,"high":21.63,"low":21.14,"open":21.37,"time":1451865600,"volume":2565},{"close":21.49,"high":21.57,"low":21.26,"open":21.5,"time":1451952000,"volume":2303}],"callback":4,"metadata":{"noData":false},"t":1482867635,"t0":1451763575,"ticker":"STK:USD:PBA@NYSE"}
>
> JSNI JSON parser:
>
> native static Object parse( String json ) /*-{ return $wnd.JSON.parse( 
> json ); }-*/;
>
> JsInterop JSON parser:
>
> @JsType( isNative = true, namespace = GLOBAL, name = "JSON" )
> abstract public class JSON {
>native static public  T parse( String json );
> }
>
>
> @JsType( isNative = true, namespace = JsPackage.GLOBAL, name = "Object" )
> public class Message {
>public int callback; // HARD-CODED in conjunction with 
> Service::CALLBACK
> }
>
>
> // json from WebSocket
> Window.console.info( parse( json ) );
> Message message = JSON.parse( json );
> Window.console.debug( message );
>
>
> console.info:
>
>1. Object
>  1. Contract:"STK:USD:PBA@NYSE"
>  2. action:"onHistoricalData"
>  3. bar:"D"
>  4. bars:Array[3]
> 1. 0:Object
>1. close:21.76
>2. high:21.84
>3. low:21.38
>4. open:21.41
>5. time:145152
>6. volume:3067
>7. __proto__:Object
> 2. 1:Object
>1. close:21.56
>2. high:21.63
>3. low:21.14
>4. open:21.37
>5. time:1451865600
>6. volume:2565
>7. __proto__:Object
> 3. 2:Object
>1. close:21.49
>2. high:21.57
>3. low:21.26
>4. open:21.5
>5. time:1451952000
>6. volume:2303
>7. __proto__:Object
> 4. length:3
> 5. __proto__:Array[0]
>  5. callback:4
>  6. metadata:Object
> 1. noData:false
> 2. __proto__:Object
>  7. t:1482867635
>  8. t0:1451763575
>  9. ticker:"STK:USD:PBA@NYSE"
>  10. __proto__:Object
>   
>
> console.debug:
>
>1. 
>   1. Object
>  1. Contract:"STK:USD:PBA@NYSE"
>  2. action:"onHistoricalData"
>  3. bar:"D"
>  4. bars:Array[3]
> 1. 0:Object
>1. close:21.76
>2. high:21.84
>3. low:21.38
>4. open:21.41
>5. time:160740
>6. volume:3067
>7. __proto__:Object
> 2. 1:Object
>1. close:21.56
>2. high:21.63
>3. low:21.14
>4. open:21.37
>5. time:160740
>6. volume:2565
>7. __proto__:Object
>     3. 2:Object
>1. close:21.49
>2. high:21.57
>3. low:21.26
>4. open:21.5
>5. time:160740
>6. volume:2303
>7. __proto__:Object
> 4. length:3
> 5. __proto__:Array[0]
>  5. callback:4
>  6. metadata:Object
> 1. noData:false
> 2. __proto__:Object
>  7. t:1482867635
>  8. t0:1451763575
>  9. ticker:"STK:USD:PBA@NYSE"
>  10. __proto__:Object
>   
>
> I tested the code in Chrome, Edge, and Safari and each yielded the same 
> results.  Any suggestion as to where things are going awry will be greatly 
> appreciated.
>
> Dave
>
>

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Re: JsInterop JSON.parse()ed object differs from JSNI JSON.parse()ed object

[Dave Puchyr]

Thanks a lot for taking a look.  Indeed, like you, when I created a simple 
test case I couldn't reproduce the error.  However, I can assure you that 
the problem is not with the server since I'm parsing the same json string 
on the client side with both JSNI and JsInterop and getting the incorrect 
result from JsInterop.  Can I do anything more than setting the GWT compile 
output style to DETAILED to investigate further?

On Friday, December 30, 2016 at 4:58:27 PM UTC+1, Jens wrote:
>
> Just tried it and both JSNI and JsInterop work as expected. Given that in 
> your broken example all timestamps are the same, I guess your server or 
> some other code has a bug and it only accidentally occurred while you were 
> testing JsInterop.
>
> -- J.
>

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JsInterop JSON.parse()ed object differs from JSNI JSON.parse()ed object

[Dave Puchyr]

Parsing the following JSON input and sending the resulting object to the 
console yields the expected results for a JSNI JSON.parse() but yields 
incorrect timestamps using a JsInterop JSON.parse() (with correct results 
for all other properties).  I'm completely at a loss as to why.  Any 
suggestions?

Input:

{"Contract":"STK:USD:PBA@NYSE","action":"onHistoricalData","bar":"D","bars":[{"close":21.76,"high":21.84,"low":21.38,"open":21.41,"time":145152,"volume":3067},{"close":21.56,"high":21.63,"low":21.14,"open":21.37,"time":1451865600,"volume":2565},{"close":21.49,"high":21.57,"low":21.26,"open":21.5,"time":1451952000,"volume":2303}],"callback":4,"metadata":{"noData":false},"t":1482867635,"t0":1451763575,"ticker":"STK:USD:PBA@NYSE"}

JSNI JSON parser:

native static Object parse( String json ) /*-{ return $wnd.JSON.parse( json 
); }-*/;

JsInterop JSON parser:

@JsType( isNative = true, namespace = GLOBAL, name = "JSON" )
abstract public class JSON {
   native static public  T parse( String json );
}


@JsType( isNative = true, namespace = JsPackage.GLOBAL, name = "Object" )
public class Message {
   public int callback; // HARD-CODED in conjunction with Service::CALLBACK
}


// json from WebSocket
Window.console.info( parse( json ) );
Message message = JSON.parse( json );
Window.console.debug( message );


console.info:

   1. Object
 1. Contract:"STK:USD:PBA@NYSE"
 2. action:"onHistoricalData"
 3. bar:"D"
 4. bars:Array[3]
1. 0:Object
   1. close:21.76
   2. high:21.84
   3. low:21.38
   4. open:21.41
   5. time:145152
   6. volume:3067
   7. __proto__:Object
2. 1:Object
   1. close:21.56
   2. high:21.63
   3. low:21.14
   4. open:21.37
   5. time:1451865600
   6. volume:2565
   7. __proto__:Object
3. 2:Object
   1. close:21.49
   2. high:21.57
   3. low:21.26
   4. open:21.5
   5. time:1451952000
   6. volume:2303
   7. __proto__:Object
4. length:3
5. __proto__:Array[0]
 5. callback:4
 6. metadata:Object
1. noData:false
2. __proto__:Object
 7. t:1482867635
 8. t0:1451763575
 9. ticker:"STK:USD:PBA@NYSE"
 10. __proto__:Object
  

console.debug:

   1. 
  1. Object
 1. Contract:"STK:USD:PBA@NYSE"
 2. action:"onHistoricalData"
 3. bar:"D"
 4. bars:Array[3]
1. 0:Object
   1. close:21.76
   2. high:21.84
   3. low:21.38
   4. open:21.41
   5. time:160740
   6. volume:3067
   7. __proto__:Object
2. 1:Object
   1. close:21.56
   2. high:21.63
   3. low:21.14
   4. open:21.37
   5. time:160740
   6. volume:2565
   7. __proto__:Object
3. 2:Object
   1. close:21.49
   2. high:21.57
   3. low:21.26
   4. open:21.5
   5. time:160740
   6. volume:2303
   7. __proto__:Object
4. length:3
5. __proto__:Array[0]
 5. callback:4
 6. metadata:Object
1. noData:false
2. __proto__:Object
 7. t:1482867635
 8. t0:1451763575
 9. ticker:"STK:USD:PBA@NYSE"
 10. __proto__:Object
  

I tested the code in Chrome, Edge, and Safari and each yielded the same 
results.  Any suggestion as to where things are going awry will be greatly 
appreciated.

Dave

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Re: GWT 2.8.0 compile warnings

[Dave Kichler]

The GWT 8 gwt-user jar (com.google.gwt:gwt-user:2.8.0) has a dependency on 
jsinterop 1.0.1.  The problem is Ivy fails to properly download that 
transitive dependency (grabs only the sources).  By adding an explicit 
dependency on jsinterop, and telling Ivy explicitly to download both 
binaries and sources and everything is good to go.  The explicit dependency 
looks like this:


  
  


Hope that helps sort you out.

On Thursday, 8 December 2016 09:18:44 UTC-8, Stik wrote:
>
> Hi Dave, how did you resolve this?  I'm not deeply familiar with Ivy, so 
> feeling a bit out of my depth.  Adding an explicit dependency on jsinterop 
> to my ivy.xml file seems to have no effect at my end, so long as gwt-user 
> is in there too it overrides my classifier :\  If i take gwt-user out then 
> it starts downloading the non-source jar too. 
>
> On Monday, November 28, 2016 at 1:23:23 AM UTC, Dave Kichler wrote:
>>
>> Eventually figured out that the GWT jars downloaded from Google have the 
>> jsinterop annotations bundled within the gwt-user.jar, which are the ones 
>> referenced by Eclipse and the ones I checked for them.  The GWT jars 
>> provided by Maven central, and which my Ant/Ivy build were referencing, do 
>> not have the jsinterop package bundled in, and instead reference it as a 
>> transitive dependency that Ivy was failing to resolve properly (resolving 
>> only sources rather than compiled jar).  An explicit dependency giving Ivy 
>> the proper classifiers on jsinterop sorted things out.  Trying the same 
>> with Maven or Gradle resolves everything just fine without the explicit 
>> reference.
>>
>

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Re: GWT 2.8.0 compile warnings

[Dave Kichler]

Eventually figured out that the GWT jars downloaded from Google have the 
jsinterop annotations bundled within the gwt-user.jar, which are the ones 
referenced by Eclipse and the ones I checked for them.  The GWT jars 
provided by Maven central, and which my Ant/Ivy build were referencing, do 
not have the jsinterop package bundled in, and instead reference it as a 
transitive dependency that Ivy was failing to resolve properly (resolving 
only sources rather than compiled jar).  An explicit dependency giving Ivy 
the proper classifiers on jsinterop sorted things out.  Trying the same 
with Maven or Gradle resolves everything just fine without the explicit 
reference.

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Re: GWT 2.8.0 compile warnings

[Dave Kichler]

Scoured my classpath for any conflicting dependencies and found none.  Also 
cleared out my gwt-unitCache but no to avail - the warnings still remain.  

On Wednesday, 23 November 2016 13:13:23 UTC-8, Jens wrote:
>
> Double check your classpath. Especially if you use gradle/maven make sure 
> you really have only a single GWT version on classpath. Also try deleting 
> your gwt-unitCache. 
>
> -- J.
>

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GWT 2.8.0 compile warnings

[Dave Kichler]

I recently upgraded my GWT app to depend on 2.8.0 and had my compile phase 
immediately flooded with GWT compile warnings.  Under previous versions, 
there were no warnings at all.  I've done some Googling but haven't found a 
solution to this particular issue.  Some other similar issues surrounding 
other third party annotations have suggested solutions of ensuring the 
compile annotations are on the GWT compile classpath.  In this case, the 
compiled annotations are present in the gwt-user and gwt-servlet jars, both 
of which I have included on the compile classpath.  The warnings look like: 

Compiling module books.app.BooksApp
 [java]Resolving books.app.common.BaseBooksApp
 [java]   Found type 'books.app.common.BaseBooksApp'
 [java]  Found type 'java.lang.Object'
 [java] Resolving method getClass
 [java]Found type 'java.lang.Class'
 [java]   Resolving method createForClass
 [java]  Found type 'java.lang.String'
 [java] Resolving method getFromCharCodeFunction
 [java][WARN] Ignoring unresolvable 
annotation type jsinterop.annotations.JsProperty
 [java] Resolving method $isInstance
 [java][WARN] Ignoring unresolvable 
annotation type jsinterop.annotations.JsMethod
 [java]  Resolving method isWelcomePageApplicable
 [java] Found type 'java.lang.Long'
 [java]Found type 'java.lang.Number'
 [java]   Resolving method $isInstance
 [java]  [WARN] Ignoring unresolvable annotation 
type jsinterop.annotations.JsMethod
 [java] Found type 'java.lang.Boolean'
 [java]Resolving method $isInstance
 [java]   [WARN] Ignoring unresolvable annotation type 
jsinterop.annotations.JsMethod

Has anyone experienced similar warnings, and more importantly, is there any 
known solution to preventing them?

Any insight would be greatly appreciated.

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Re: Will Google release Javascript compression tool?

[Dave Brown]

I got tired of the lack of tools to compress and obfuscate, so I have tried 
to tackle the issue.

www.whak.ca is a bunch of obfuscators I made.

www.scriptcompress.com will minify and use real compression (LZMA, ZIP, 
gzip, bzip, etc) that extracts VIA web browser client side 
inline/offline/online

On Thursday, May 18, 2006 at 10:22:39 PM UTC-4, markm wrote:
>
> There doesn't seem to be a good javascript compressor/obfuscator
> available that doesn't break code. Google must have an in-house tool
> they've used on Maps etc.
>
> Do they have any plans to provide this to the general public?
>
> Having said that, I'm of two minds as to whether this is a good idea. I
> think we've all benefited at some point from the unobfuscated code of
> others and reverse engineering is such a bore. 
>
> Thanks.
>
> Mark Maunder.
>
>

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Re: CellTable Memory Leak in IE8

[Dave Chapman]

Hi Harvard,

Thanks for the update, I did think it was "lucky" my quick hack worked, but
glad I could help (in a small way!).

Cheers,
Dave

On 13 August 2015 at 04:29, Harvard Pan  wrote:

> Turns out that my test program no longer leaked because the rows in the
> test program's CellTable were no longer being replaced. After I changed the
> test program to output different data for each iteration, it became clear
> that the rows in the table just never changed. I tracked down the problem
> to setting the innerHTML for each row before the call to
> tableElement.replaceChild(newSection, section). Once I moved the setting of
> innerHTML to null to after this call, the table updates properly, but the
> leak still remains.
>
> Upon further testing, the memory leak seems to be largely from the
> replaceChild call. I guess if the entire TableSection is replaced in the
> DOM, IE8 doesn't properly clean this up, even if you set the innerHTML to
> null for the individual rows. I changed the implementation of
> replaceTableSection so that it ends up calling replaceAllRowsImplLegacy
> (which replaces one row at a time) and this yielded the correct result of
> updating the table while also not leaking memory.
>
> Here's the final code that I ended up with in ImplTrident:
> // GWT Issue #9164 - https://github.com/gwtproject/gwt/issues/9164
> // Discussion thread:
> https://groups.google.com/forum/#!topic/google-web-toolkit/lNOKG2dgAzs
> private native final void setRowInnerHtmlToNull(TableRowElement row)
> /*-{
>   row.innerHTML = null;
> }-*/;
>
> /**
>  * This method is used for legacy AbstractCellTable that's not a
>  * {@link TableSectionChangeHandler}.
>  */
> protected void replaceAllRowsImplLegacy(AbstractCellTable table,
> TableSectionElement section,
> SafeHtml html) {
>   // Remove all children.
>   Element child = section.getFirstChildElement();
>   while (child != null) {
> Element next = child.getNextSiblingElement();
> section.removeChild(child);
> // GWT Issue #9164 - https://github.com/gwtproject/gwt/issues/9164
> // Discussion thread:
> https://groups.google.com/forum/#!topic/google-web-toolkit/lNOKG2dgAzs
> if (TableRowElement.is(child)) {
> setRowInnerHtmlToNull(TableRowElement.as(child));
> }
> child = next;
>   }
>
>   // Add new child elements.
>   TableSectionElement newSection = convertToSectionElement(table,
> section.getTagName(), html);
>   child = newSection.getFirstChildElement();
>   while (child != null) {
> Element next = child.getNextSiblingElement();
> section.appendChild(child);
> child = next;
>   }
> }
>
> /**
>  * Render html into a table section. This is achieved by first setting
> the html in a DIV
>  * element, and then swap the table section with the corresponding
> element in the DIV. This
>  * method is used in IE since the normal optimizations are not
> feasible.
>  *
>  * @param table the {@link AbstractCellTable}
>  * @param section the {@link TableSectionElement} to replace
>  * @param html the html of a table section element containing the rows
>  */
> private void replaceTableSection(AbstractCellTable table,
> TableSectionElement section,
> SafeHtml html) {
>   String sectionName = section.getTagName().toLowerCase();
>   replaceAllRowsImplLegacy(table, section, html);
>   if ("tbody".equals(sectionName)) {
> ((TableSectionChangeHandler) table).onTableBodyChange(section);
>   } else if ("thead".equals(sectionName)) {
> ((TableSectionChangeHandler) table).onTableHeadChange(section);
>   } else if ("tfoot".equals(sectionName)) {
> ((TableSectionChangeHandler) table).onTableFootChange(section);
>   }
> }
>
> Again, many thanks for all your help. We couldn't have solved this
> otherwise.
>
> Harvard
>
>
> On Wed, Aug 5, 2015 at 9:07 AM, DaveC 
> wrote:
>
>> No worries, glad it worked! ;)
>>
>> I've not personally committed any code to the core gwt project but you
>> can find out more here
>> http://www.gwtproject.org/makinggwtbetter.html#contributingcode
>>
>> Bear in mind that GWT 3.0 is going to be a very different animal (for
>> instance, from what I understand there will be no widgets or gwt-rpc...),
>> so perhaps there isn't such a need to get these things fixed... I might be
>> wrong though.
>>
>> Cheers,
>> Dave
>>
>>
>> On Wednesday, 5 August 2

GWT-RPC: hacked attempt on request payload.

[Dave Y]

Hi,

My test team try to hack on the system, they found out that GWT-RPC call 
returned a sensitive information  (class name as highlighted in blue as 
below) in response format "//EX" message. I'm amazed that I can't find any 
postings on this issue.

HTTP Request (Request payload):
*7|0|5|http://localhost:8080/Test_Web/|14B8AB60CF9C73722670313BAE18D294|abc|abc|abc|1|2|3|4|1|5|0|*


 HTTP Response:

>
> *//EX[2,1,["com.google.gwt.user.client.rpc.IncompatibleRemoteServiceException/3936916533","This
>  
application is out of date, please click the refresh button on your 
browser. ( Blocked attempt to access*
*interface 'abc', which is not implemented by 
'com.testProject.client.customerClassService'; this is either 
misconfiguration or a hack attempt)"],0,7]*

>
>
Specially the part that says "either misconfiguration or a hack attempt". 
In my case is hack attempt as HTTP Response, because the exception states 
that *'abc' *is not implemented by 
* 'com.testProject.client.customerClassService'*.

Any ideas to hide the sensitive information (class name as highlighted in 
blue) in the error message as above ? I try with all browsers available it 
is not from the browser. 

Urgent. Any help will be appreciated.
Thanks.
  

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Re: GWT 2.7.0 is here

[Dave Dumaresq]

Why isn't this available from the Eclipse update site (luna 
<https://dl.google.com/eclipse/plugin/4.4>)? For that matter I can't find 
2.6.1 there either.

Dave

On Thursday, 20 November 2014 02:59:06 UTC-8, Daniel Kurka wrote:
>
> Today we are excited to announce the GWT 2.7.0 release.  Thanks to 
> everyone who contributed to this release, especially our non-Google open 
> source contributors.
>
> One major feature of this release is a new super fast compilation path in 
> Super Dev mode that replaces the old dev mode.
> For a run-down of all changes since GWT 2.6.1, read the release notes 
> <http://www.gwtproject.org/release-notes.html#Release_Notes_2_7_0>.
>
> The release is available for download here 
> <http://www.gwtproject.org/download.html> or on maven central.
>
> If you find any issues with this release, please file a bug in our issue 
> tracker.
>
> Daniel,
> on behalf of the GWT team at Google
>
>

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Is there a way to compile GWT code in production mode using maven.

[vikram dave]

Hi,

I am trying to compile the GWT code in Production mode so that I don't have 
any Dev mode code in my generated JavaScript file. I have a Production App 
that I build using Maven and am not able to compile the code in Production 
mode. I set production mode to be true for my gwt-maven-plugin in pom file, 
as follows. But, I still get hosted mode code generated. What can I do, to 
compile in Production mode using maven? Is there a flag/property I can set 
in my pom file or *.gwt.xml file or somewhere else?





org.codehaus.mojo

gwt-maven-plugin

2.5.1







compile





true

war

src/main/webapp

war

${Module.name}

${gwt.extraJvmArgs}










I see that in GWT example using Ant, you can compile in production. 
Following gets called in its build.xml file. Can I do similarly in maven? 
Is there an example to use Ant with Maven without changing the existing 
maven structure? 

  



  









  

  

  

  

  

  

  

  



  

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Is there way to compile GWT in production mode?

[vikram dave]

Hi,

I am trying to compile my GWT code in production mode using Maven. I set 
production mode true (as seen below) in my pom, but I still see Dev mode 
code in my JS files. I don't want any dev mode code in my production JS 
file. Is there a way to do this using Maven? Can I set some flag/ property 
in my pom or *.gwt.xml file? 





org.codehaus.mojo

gwt-maven-plugin

2.5.1







compile





true

war

src/main/webapp

war

${Module Name}

${gwt.extraJvmArgs}










I see that Ant lets you compile in production mode  by using following in 
build.xml file. Is there a way I can do this in maven? Or using Ant plugin 
in Maven? (If yes please share an example or point me to a good doc)

  



  









  

  

  

  

  

  

  

  



  



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Re: EJB Statefull GWT Integration

[Dave Laycock]

Sure. You can use 
getThreadLocalRequest()in
 your RPC methods to get access to user's current HttpSession. You can 
keep a reference to the bean in the session.

This is an unusual pattern for GWT. Typically, the server is stateless.

On Tuesday, 13 August 2013 05:33:18 UTC-6, df wrote:
>
> Can I use statefull session bean with gwt rpc?
>
>

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Re: Drag and Drop to a RichTextArea / IFrame?

[Dave]

paranoiabla@...  writes:

> 
> 
> I have the same problem. I can't drop into an iframe :( On Monday, August 
6, 2012 10:36:58 PM UTC+3, GWT Kid wrote:
> is there a solution for this ? How do we do drag and drop in 
richTextAreaOn Wed, Oct 26, 2011 at 9:55 AM, Derek  wrote:I'm trying out some of the 
fun drag-and-drop stuff in GWT. My current
> attempt is to drag a file into a richtextarea, but nothing seems to be
> working correctly. It works fine if I use a FlowPanel or some other
> GWT widget, but not a RichTextArea despite it have an addDropHandler
> method.
> Anyone have any experience with this?
> My code in onModuleLoad:
> DropHandler drop = new DropHandler() {
>           Override
>         public void onDrop(DropEvent event) {
>                 event.preventDefault();
>                 String data = event.getData("text");
>                 GWT.log("text is "+data+" and there are
> "+numFiles(event.getDataTransfer())+" files");
>         }
> };
> RichTextArea rt = new RichTextArea();
> rt.addDropHandler(drop); // never called even after drag-and-dropping
> a file on the rt
> RootPanel.get().add(rt);
> --
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> 
> 
> 
> 
> 
> 
> 


Did you find a solution?  I'm having the same problem.  I've tried it using 
JSNI too, it seems to get a few events then stops.  How did you solve this?

-Dave


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Re: Anyone tried to compile an old GWT 1.x app, under 2.5? Don't bother...it's broken.

[Dave]

Ok, I finally figured it out. (sigh).

After putting the gwt-maps.jar somewhere (I put it into the gwt tree), then
add a line to "build.xml" like:


Then, in your module's (project's) xml file, add an 'inherits' line like:


Then, ant should be able to get a functional compile.

[My 4-year-old project also does some xml-parsing, so in that case, you'd
also need an inherits line to get the XML-support module::]
  

Hope this helps someone else.

Cheers... 

>
> On Thursday, February 14, 2013 9:07:21 PM UTC-5, Dave wrote:
>>
>> Ok. I tried this.
>>
>> Use the new WebAppCreator, and create a work area for some 'SimpleMaps' 
>> example.
>>
>> Run ant, and the generic generated code will compile.
>>
>> But, as soon as you take the example code from SimpleMaps and try to 
>> compile that, the
>> compile will fail.
>>
>> There's some mumbling about various tweaks, such
>> as putting gwt-maps.jar into the GWT tree, or adding an 'inherits' as 
>> shown at:
>> http://code.google.com/p/gwt-google-apis/wiki/MapsGettingStarted
>> but none of that works.  (I tried with 1.1.1 and 1.0.4, etc)
>>
>> I'm just talking about getting a clean compile.  I can't.
>> Not under Win-7.
>> Not under Linux.
>>
>> Someone didn't do their homework (aka basic testing).
>>
>> So, what's my workaround, until this gets sorted???
>>
>>
>>

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Re: Anyone tried to compile an old GWT 1.x app, under 2.5? Don't bother...it's broken.

[Dave]

Does this have something to do with the fact that these APIs are shown now 
as
'deprecated'?

Can ANYONE get their SimpleMaps example code to compile, under GWT 2.5?



On Thursday, February 14, 2013 9:07:21 PM UTC-5, Dave wrote:
>
> Ok. I tried this.
>
> Use the new WebAppCreator, and create a work area for some 'SimpleMaps' 
> example.
>
> Run ant, and the generic generated code will compile.
>
> But, as soon as you take the example code from SimpleMaps and try to 
> compile that, the
> compile will fail.
>
> There's some mumbling about various tweaks, such
> as putting gwt-maps.jar into the GWT tree, or adding an 'inherits' as 
> shown at:
> http://code.google.com/p/gwt-google-apis/wiki/MapsGettingStarted
> but none of that works.  (I tried with 1.1.1 and 1.0.4, etc)
>
> I'm just talking about getting a clean compile.  I can't.
> Not under Win-7.
> Not under Linux.
>
> Someone didn't do their homework (aka basic testing).
>
> So, what's my workaround, until this gets sorted???
>
>
>

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Anyone tried to compile an old GWT 1.x app, under 2.5? Don't bother...it's broken.

[Dave]

Ok. I tried this.

Use the new WebAppCreator, and create a work area for some 'SimpleMaps' 
example.

Run ant, and the generic generated code will compile.

But, as soon as you take the example code from SimpleMaps and try to 
compile that, the
compile will fail.

There's some mumbling about various tweaks, such
as putting gwt-maps.jar into the GWT tree, or adding an 'inherits' as shown 
at:
http://code.google.com/p/gwt-google-apis/wiki/MapsGettingStarted
but none of that works.  (I tried with 1.1.1 and 1.0.4, etc)

I'm just talking about getting a clean compile.  I can't.
Not under Win-7.
Not under Linux.

Someone didn't do their homework (aka basic testing).

So, what's my workaround, until this gets sorted???


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Re: Future of GWT survey

[Dave Laycock]

I wish I could change my responses. I forgot about the single biggest 
improvement I would like to see on the long term roadmap: support for Java 
8 language features

On Wednesday, 19 September 2012 07:23:24 UTC-6, Joonas Lehtinen wrote:
>
> What is your opinion on the future of GWT?
> How should GWT develop?
> What technologies should it better support?
> ...
>
> We all would like to get answers to these questions, right? To do so, we 
> created survey with help of Ray Cromwell, Artur Signell, Mike Brock, David 
> Chandler, Daniel Kurka and Bhaskar Janakiraman.
>
> If you want to help finding the best direction for GWT, please fill the 
> survey at: http://bit.ly/GWT2012
> (it will take just 10 minutes)
>
> When the results are collected, the will share the information with you.
>
> - Joonas @ Vaadin
>

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Re: Clearing cache of fileupload widget.

[Dave Williams]

You can clear the selected files by setting the 'value' property to an 
empty string. (For a TYPE="FILE" input control, you can only set the 
'value' property to an empty string - trying to set it to anything else 
will be treated as an error and will be ignored by the web browser. For 
more info see: 
http://www.w3.org/TR/2011/WD-html5-20110525/common-input-element-attributes.html#dom-input-value
 beneath 
the subheading 'filename'). 

Unfortunately, there is presently no method in the GWT FileUpload class to 
enable this to be done easily. However, the second line of code below will 
achieve the desired effect.

FileUpload myFileUploadControl=new FileUpload();
.
DOM.setElementProperty(myFileUploadControl.getElement(),"value","");


On Thursday, 22 December 2011 00:59:36 UTC-5, Rahul Sharma wrote:
>
> Hi, 
> Can anyone help me out in clearing the contents of the fileupload 
> widget. 
> I mean for textbox we write textBox.setText("") to clear the content 
> of it, is there anyway to clear the FIleupload also. 
>
> Thanks in Advance 
> rahul

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Re: Window.open() opens as a popup

[Vishal Dave]

Hi,

Directly call of Window.open() works perfectly to avoid popup blocker, but 
I need to fetch URL with RPC call
 onClick of the same button and open a new window, if I set global variable 
to set URL and pass in Window.open() then it takes double click to open 
newWindow, how can I achieve all with a single click of button?

thanks,
Vishal Dave

On Tuesday, April 24, 2012 10:33:51 PM UTC+5:30, Jens wrote:
>
> You have to make sure that you directly call Window.open() in the 
> ClickHandler. Don't to it in a Timer, deferred command or similar inside 
> the ClickHandler. The Browser must recognize that Window.open() is directly 
> called because of a user action. It does not matter if its a Button or an 
> Anchor.
> Also don't do Window.open() somewhere deep in a sub function called inside 
> the ClickHandler.
>
> Something like the following will work:
>
> Button b = new Button("Test");
> b.addClickHandler(new ClickHandler() {
>   void onClick(ClickEvent e) {
> Window.open("http://www.google.de";, "_blank", "");
>   }
> });
>
> If you wrap Window.open() for example in a Timer it won't work anymore.
>
> -- J.
>

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Re: GWT Caching of files

[Dave]

Thomas, what do you mean by "touch" your no cache.js file?  I have
this Chrome caching issue not only when rolling back, but also when
deploying new version.  Is there a way to do this via ant or during
the GWT compile?  My ant compile looks like this.























On Feb 6, 2:41 pm, Thomas Broyer  wrote:
> Your browser asks for the no cache.is with an If-Modified-Since header, so 
> once you get a fresher file you cannot get back an older one. You should 
> "touch" your no cache.js file so it has a later modification date.

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Having trouble calling a function in a separate Javascript file in GWT

[Dave]

I'm trying to create an example app to demonstrate that GWT can use
existing Javascript functions, but so far I've been unable to get it
to work correctly.  I've named my project JS_Integration_Example and I
created it from the default Web Application Starter Project that is
provided when you create a new GWT project in eclipse.  I'd really
appreciate anyone who could point out what my problem is.  I've done
some Googling on this subject but so far haven't found any specific
examples showing exactly where to put the js file and what to add to
the gwt.xml file.

I've create a file named general.js that contains the following js
function

function helloWorld(){
return "Hello World";
}


I call the function from JS_Integration_Example.java by using the
following JSNI method

/** Java Script Via JSNI */
public native String helloWorld2()/*-{
return $wnd.helloWorld();
 }-*/;


I placed general.js in a folder named scripts that is in the src
package and I added the following line to the
JS_Integration_Example.gwt.xml



  

 ...

When I try to run it I get the following warning & errors :
[WARN] 404 - GET /js_integration_example/scripts/general.js
(127.0.0.1) 1427 bytes
   Request headers
  Accept: */*
  Accept-Language: en-us
  User-Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1;
Trident/4.0; .NET CLR 1.1.4322; .NET CLR 2.0.50727; .NET CLR
3.0.4506.2152; .NET CLR 3.5.30729; InfoPath.2; MS-RTC LM
8; .NET4.0C; .NET4.0E)
  Accept-Encoding: gzip, deflate
  Host: 127.0.0.1:
  Connection: Keep-Alive
  Referer: 
http://127.0.0.1:/JS_Integration_Example.html?gwt.codesvr=127.0.0.1:9997
   Response headers
  Content-Type: text/html; charset=iso-8859-1
  Content-Length: 1427

09:45:26.536 [ERROR] [js_integration_example] Uncaught exception
escaped
com.google.gwt.event.shared.UmbrellaException: One or more exceptions
caught, see full set in UmbrellaException#getCauses
at
com.google.gwt.event.shared.HandlerManager.fireEvent(HandlerManager.java:
129)
...

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compiler.emulatedStack.recordLineNumbers

[Dave]

I'm attempting to record line numbers in my GWT client code.  I see
that the property compiler.emulatedStack.recordLineNumbers can be used
to accommodate this.  Thus in my gwt.xml class I have the following

...


...

When compiling I get the error

[ERROR] The specified property
'compiler.emulatedStack.recordLineNumbers' is not of the correct type;
found 'ConfigurationProperty' expecting 'BindingProperty'

regards,
Dave

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GWT Spring Interjection

[Dave Potts]

hi,

What is the best way of intergrating  a Gwt project with the spring
Framework?

I have seen several different attempts at doing this

gwt-spring-starter-app
orcades-gwt-spring
spring4gwt
gwtrpc-spring

The gwt application is going to be making simple Gwt Servlet requests and
will be expecting several strings or a jpg worth of data back.

Does anybody have suggestions as to which is the better choice or can
suggest another way of doing this type of thing?

Thanks in advance.

DAve.

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DockPanels && TabLayoutPanel and missing elements

[Dave Potts]

Hi
I trying to construct a dialog with a base of a dockpanel with a
tablayoutpnael in the 'south' area.  An attempt to add an element to any
off the tab panel results in a display that only shows the tab header.

Looking a html/dom tree/display with firebug does not show anything
useful, is this type off thing a known problem.

I construct my tablayout panel and add several panels constructed from
FLOWPanels, I add elements to the FLOWPanels,  I expected something to be
shown or something to hidden in the firebug window.

my code reads as follows

public final  class MkMainDisplay extends TabLayoutPanel {


public MkMainDisplay(MkLayers theLayers) {
super(1.5, Unit.EM);
this.theLayers=theLayers;
BaseTabPanel tabPan,routePan,portPan;
tabPan=new InfoPanel(Info);
addPan(tabPan);
BLAH BLAH

private void addPan(BaseTabPanel pan){
add(pan,pan.getName());
BLAH BLAH

in the class InfoPanel

public class InfoPanel extends BaseTabPanel
public InfoPanel(String name) {
super(name);
add(new HTML("Hello world I am panel"));
}
 BLAH BLAH
In the class BaseTabPanel

public class BaseTabPanel extends FlowPanel {

private String name;
public BaseTabPanel(String name) {
super();
this.name=name;
}
BLAH BLAH

Am I doing something wrong or have I forgotten to do something important?

Dave









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Re: GWT Designer isDesignTime Not Working?

[Dave Kor]

Thanks for the reply! I guess I'll make do for now with a temporary fix. The
documentation should really be updated, I wasted half a day trying to figure
out what I was wrong with my code. .

On Mon, Jul 25, 2011 at 11:16 PM, Eric Clayberg  wrote:

> Unfortunately, that option no longer works in GWT 2.2 and above, so we are
> replacing it with an implementation of 
> Beans.isDesignTime()<http://gwt-code-reviews.appspot.com/1443802/>in GWT
> 2.4 <http://code.google.com/eclipse/beta/docs/download.html>.
>
> The two options would be to use GWT 
> 2.4<http://code.google.com/eclipse/beta/docs/download.html>
>  and Beans.isDesignTime() <http://gwt-code-reviews.appspot.com/1443802/> or
> a null check to prevent the NPE.
>
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UML (Ecore) integration Android

[Dave K]

I've made an Ecore diagram and some generated code. I want to use the
generated model in an Android project but I can't get it to work. I've
added the UML project to the build path and can call classes form it.
After compiling no error is given but when I use it in the emulator or
phone it crashes immediatly.

I hope someone can tell me what to do?

Thanks, Dave Kosterink

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Re: GWT remote logging

[Dave]

Adding a mapping to my web.xml made it work.  Thanks a bunch!

On May 25, 1:53 am, Alexandre Ardhuin 
wrote:
> Have you add an URL mapping in your web.xml ?
>
>     
>         remoteLogging
>
> com.google.gwt.logging.server.RemoteLoggingServiceImpl let-class>
>     
>     
>         remoteLogging
>         /YOUR_MODULE/remote_logging
>     
>
> Alexandre
>
> 2011/5/24 Dave 
>
>
>
>
>
>
>
> > I'm trying to Log a message to a server log.  I found these
> > instructions:
>
> >http://code.google.com/webtoolkit/doc/latest/DevGuideLogging.html#Rem...
>
> > In my GWT XML I have
> > 
> > 
> > my code is:
> > SimpleRemoteLogHandler remoteLog = new SimpleRemoteLogHandler();
> > remoteLog.publish(new LogRecord(Level.INFO, "test GWT log"));
>
> > I'm sure that I'm missing a simple setup step.
>
> > I get the error message.
> > WireActivityLogger SEVERE: Remote logging failed:
> > com.google.gwt.user.client.rpc.StatusCodeException: 0
> >   at
>
> > com.google.gwt.user.client.rpc.impl.RequestCallbackAdapter.onResponseReceiv 
> > ed(RequestCallbackAdapter.java:
> > 192)
> >   at
> > com.google.gwt.http.client.Request.fireOnResponseReceived(Request.java:
> > 287)
> >   at com.google.gwt.http.client.RequestBuilder
> > $1.onReadyStateChange(RequestBuilder.java:395)
> >   at sun.reflect.GeneratedMethodAccessor36.invoke(Unknown Source)
> >   at
>
> > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImp 
> > l.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.jav 
> > a:
> > 157)
> >   at
>
> > com.google.gwt.dev.shell.BrowserChannelServer.reactToMessagesWhileWaitingFo 
> > rReturn(BrowserChannelServer.java:
> > 326)
> >   at
>
> > com.google.gwt.dev.shell.BrowserChannelServer.invokeJavascript(BrowserChann 
> > elServer.java:
> > 207)
> >   at
> > com.google.gwt.dev.shell.ModuleSpaceOOPHM.doInvoke(ModuleSpaceOOPHM.java:
> > 126)
> >   at
> > com.google.gwt.dev.shell.ModuleSpace.invokeNative(ModuleSpace.java:
> > 561)
> >   at
> > com.google.gwt.dev.shell.ModuleSpace.invokeNativeObject(ModuleSpace.java:
> > 269)
> >   at
>
> > com.google.gwt.dev.shell.JavaScriptHost.invokeNativeObject(JavaScriptHost.j 
> > ava:
> > 91)
> >   at com.google.gwt.core.client.impl.Impl.apply(Impl.java)
> >   at com.google.gwt.core.client.impl.Impl.entry0(Impl.java:214)
>
> > Thanks for your assistance,
>
> > Dave
>
> > --
> > You received this message because you are subscribed to the Google Groups
> > "Google Web Toolkit" group.
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> > To unsubscribe from this group, send email to
> > google-web-toolkit+unsubscr...@googlegroups.com.
> > For more options, visit this group at
> >http://groups.google.com/group/google-web-toolkit?hl=en.

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GWT remote logging

[Dave]

I'm trying to Log a message to a server log.  I found these
instructions:
http://code.google.com/webtoolkit/doc/latest/DevGuideLogging.html#Remote_Logging

In my GWT XML I have



my code is:
SimpleRemoteLogHandler remoteLog = new SimpleRemoteLogHandler();
remoteLog.publish(new LogRecord(Level.INFO, "test GWT log"));

I'm sure that I'm missing a simple setup step.

I get the error message.
WireActivityLogger SEVERE: Remote logging failed:
com.google.gwt.user.client.rpc.StatusCodeException: 0
   at
com.google.gwt.user.client.rpc.impl.RequestCallbackAdapter.onResponseReceived(RequestCallbackAdapter.java:
192)
   at
com.google.gwt.http.client.Request.fireOnResponseReceived(Request.java:
287)
   at com.google.gwt.http.client.RequestBuilder
$1.onReadyStateChange(RequestBuilder.java:395)
   at sun.reflect.GeneratedMethodAccessor36.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.BrowserChannelServer.reactToMessagesWhileWaitingForReturn(BrowserChannelServer.java:
326)
   at
com.google.gwt.dev.shell.BrowserChannelServer.invokeJavascript(BrowserChannelServer.java:
207)
   at
com.google.gwt.dev.shell.ModuleSpaceOOPHM.doInvoke(ModuleSpaceOOPHM.java:
126)
   at
com.google.gwt.dev.shell.ModuleSpace.invokeNative(ModuleSpace.java:
561)
   at
com.google.gwt.dev.shell.ModuleSpace.invokeNativeObject(ModuleSpace.java:
269)
   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:214)


Thanks for your assistance,

Dave

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Problems with showing Designer after update GWT

[Dave K]

Hello,

I've some problems with the Designer after updating GWT. I didn't
change anything in my code so I think that the is the update. Do you
know how to solve this for me?

I've made a report but I can't attach it.

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memory leak in sample project

[Dave]

Hi all.

I've created the GreetingService sample gwt 2.0.3 application using
Eclipse 3.5.1. I run the app in Development Mode so I can run it in
the Drip-0.3.exe memory leak detector. When I open and close the
sample pop up repeatedly I can see the Current Memory Usage in Drip go
up. Does this indicate a memory leak or DOM reclamation issue ?

Thanks,

David

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Handling focus on child Tabs in Firefox and IE8

[Dave]

I have a GWT application with links that open other tabs in the
browser using the GWT Window open method. I need the ability to set
focus on these tabs when the User selects the links again from the
main app. I currently have in place a jsni method which gets a handle
to the child window and invokes the focus method on it. When I have
Tabs turned off in IE8 and Firefox the child window gets focus. When I
enable tabs the focus does not work.

The focus does work in Chrome. While I'd like to just tell my Users to
use Chrome I don't have that luxury. Any suggestions ?

Thanks,

David

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Re: Announcing GPE/GWT 2.2M1

[Dave Laycock]

Will the final release have feature parity with GWT Designer? It looks like 
Ext GWT and Smart GWT are not supported in this plugin.

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Dynamically generated user navigation

[Dave]

Hi all.

I need to dynamically create a navigation view with multiple selection
points based on an xml configuration file. Then, for each navigation
selected, show an associated GWT Panel.
I was hoping I could accomplish this with the GWT.create method or
GIN. It does not appear possible. Is my flaw the xml file ? Has anyone
already solved this ?

Thanks,

David

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enable tabbing of TH tags

[Dave]

Hi all.



I need to be able to tab through some TH tags I’ve added to my
customized FlexTable.

I first create the element.

Element th = DOM.createTH();

th.setId(DOM.createUniqueId());

The following line then successfully adds scope=”col” to the th
element.

DOM.setElementProperty((com.google.gwt.user.client.Element) th,
"scope", "col");

I then tried to add tabindex=0 to the th element.I verified this
enables the tabbing via the w3c th tutorial even though I don’t see it
as a supported attribute.

DOM.setElementProperty((com.google.gwt.user.client.Element) th,
"tabindex", "0");

This did not add the tabindex. I used Firebug  to verify.

Any ideas ?

Thanks,
Dave

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Re: App does not display in IE 7

[Dave Combs]

One thing you might want to check.  I was building a login page in GWT
and decided to put a background panel that covered the entire screen,
with a FormPanel inside that (absolute positioned) and other stuff
inside
the FormPanel. On Firefox this showed up somewhat off-screen.  On IE7,
it showed a completely blank screen. I found that GWT was generating
a
RootLayoutPanel  with 'overflow:hidden'.  When I added a style
to
the RootLayoutPanel and set overflow:scroll instead, both IE7 and
Firefox
correctly showed the FormPanel and its contents in the middle of the
screen.

Check the  for the root layout panel, and see what you have
there.

Cheers,
Dave

On Aug 23, 2:08 am, Lukasz  wrote:
> I have the same problem - so I would be very interested if you have
> found a solution or cause of it. My assumption is, that the ie7
> rendering problems are related to my own CSS - are you also using
> custom CSS styles for the standard components?
>
> Kind regards,
> Lukasz
>
> On Aug 20, 7:21 pm, Greg Dougherty  wrote:> I 
> have a web app that displays just fine in the Mozilla browsers, but
> > does not display at all in IE 7 (totally blank screen).  I'm deploying
> > this through Tomcat (see previous message about Development Mode not
> > working with JDK 1.5), so I can't usefully follow it in the debugger
> > (the issues are on the client side, since my app does not yet do
> > anything useful with the server).  Any suggestions on what might be
> > going wrong?
>
> > TIA,
>
> > Greg

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setting checkbox position

[Dave Combs]

I notice that GWT's Checkbox is implemented as a span + widget, so
that it can keep the label and the widget together.  Adding a style
adds it to the span.  How can I style a Checkbox widget via CSS so
that it has absolute positioning in it's parent container?  I'm
creating a UI that sets most items to absolute positions--it doesn't
want thing to float or move around when the page resizes.  As of now,
the checkboxes don't even show up in their containing .

Thanks!
Dave

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Re: Widget for long text?

[Dave]

Okay, I give up!

I've been trying to get this to work but I'm just too much of Newbie-
ness to figure this out!

I'm trying to create a widget that does what the original poster is
trying to do, that is, show the contents of an application log in real-
time.  I've created UiBinder where the .xml looks like this:









and my Java class look like this:

public class LogViewer extends ResizeComposite {
private static LogViewerUiBinder uiBinder =
GWT.create(LogViewerUiBinder.class);
interface LogViewerUiBinder extends UiBinder {
}

@UiField Label theLabel;

public LogViewer() {
initWidget(uiBinder.createAndBindUi(this));
}

public void append(String text) {
Element element = theLabel.getElement();
element.appendChild(new HTML(text).getElement());
}
}

The two problems I'm having are that the scroll bars never show up and
the widget seems to only take up space that it needs to show text
string being appended.  I suspect part of my problem is that I don't
understand how to get panels to size themselves to fit an area of the
screen.  In my case, I have a DockLayoutPanel with menu bar along the
"west" side and a display area that is supposed to take up the rest of
the display area in the "center" of the panel.  The UiBinder looks
like this:



.content {
border-left: 1px solid #999;
border-right: 1px solid #999;
border-bottom: 1px solid #999;
}





Top










The logging widget I'm trying to create is put into the
"contentPanel".

What am I doing wrong?  How can I get the scroll bars to appear and
have the ScrollPanel take up the entire area of the contentPanel (or
have the "contentPanel" take up the entire area to the right of the
"west" menubar?

Thanks,
Dave.


On Jul 18, 9:31 am, Thomas Broyer  wrote:
> On 18 juil, 17:27, Stefan Bachert  wrote:
>
> > Hi Magnus,
>
> > I never had have this case.
> > I would try two approaches
>
> > a) You can play with nodes. There is a insert after 
> > functionalityhttp://google-web-toolkit.googlecode.com/svn/javadoc/2.1/com/google/g...
>
> D'oh! right, of course! Document.get().createTextNode()
> +Element#appendChild().
> And it should work with Label#getElement if you're afraid of creating
> a new widget yourself from scratch (though really, for such a thing,
> it'd be really easy)

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Suggestion for real time logging widget

[Dave]

I'm writing a UI application that will include a widget that will
provide a real-time view of a log.  The widget will make requests back
to a server app for log messages and then display them to the user.

I've played with a couple of different widgets but can't quit find the
one that will do what I want.  I need something that will allow me to
add text lines to and have it scroll nicely so the user can see
messages.  I also need to be able to delete lines from it as the
number hits a max.

In addition to this, would like some lines to be hyperlinked so that
the user can click on it and see more information about the specific
logging message.

Any recommendations on what widget(s) would be best to use?  I'm
planning to use UiBinder to build the app.

Thanks
Dave.

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Re: An implementation of Selection/Cursor for RichTextArea

[Dave LeBlanc]

I'd like to chime in and add my support for this feature.  Having good
support for cross-browser selections is something we're strongly desiring
right now, and the GWT-Rocket implementation is old and non-functional.

Hopefully the GWT folks can find a good place to integrate and test this, as
I'd really like to see it in the core distribution.

Thanks,

 -Dave

On Wed, Apr 14, 2010 at 5:05 PM, Manuel Carrasco Moñino
wrote:

> I remember that GWT guys said that they wont accept new stuff for
> incubator, but only fixes to existing code, because they are planning
> to include most useful widgets from incubator to official gwt trunk.
> So I think incubator is not an option to test this feature.
>
> Nevertheless I'll take a look to your code and give feedback probably next
> week.
>
> Cheers
> -Manolo
>
>
> On Wed, Apr 14, 2010 at 4:13 PM, kozura  wrote:
> > Yeah, I've put in other patches, but for complete new functionality it
> > might be better to go through the incubator first; I can just ask on
> > contributors.  But either way, deciding whether others want this
> > functionality to take the time doing up all the test cases and
> > switching to GWT style conventions..
> >
> > Thanks
> > jk
> >
>
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>


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Advice request for GWT newbie

[Dave]

I'm a newbie with GWT and before I go about trying to implement a
solution using the technology I thought I would first ask advice.

I have an application that handles well data transmitted to it over
socket connections, transforms the data, and forwards it to other
components for further processing.  The application runs in a Jboss
container and I need to hang a UI on it to allow remote
administration.

I will need to create a few different screens but the one I would like
to start with is a screen that allows a user to view the traffic logs
in real-time.

What GWT components would I use to do this?

Thanks.

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Explanation needed for many to many example

[Dave]

This is the code below for many to many that I found on App engine. I
am puzzled about the last line code. I do not know where getKey() gets
it values from in the line  food.getFoodFans().add(getKey()); Could
some please explain. Thanks.

Person.java

import java.util.Set;
import com.google.appengine.api.datastore.Key;

// ...
@Persistent
private Set favoriteFoods;

Food.java

import java.util.Set;
import com.google.appengine.api.datastore.Key;

// ...
@Persistent
private Set foodFans;

Album.java
// ...
public void addFavoriteFood(Food food) {
favoriteFoods.add(food.getKey());
food.getFoodFans().add(getKey());
}



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multiselect ListBox getting selected items

[Dave]

I'm attempting to get multiple selected items from a ListBox

My setup code is:

final ListBox listBox = new ListBox(true);
listBox.addItem("Item 1", "1");
listBox.addItem("Item 2", "2");
listBox.addItem("Item 3", "3");

In the onClick event of a button on my panel I want to get the
selected items.  I have seen suggestions to iterate over all the
items, calling the isItemSelected() method for each item to determine
whether it’s selected.  However I do not see any methods available on
ListBox to get the list of items.  Obviously I could add a listener to
the listBox to capture when someone selects or unselects an item but
there must be an easier way to get all of the selected items in a
multiselect ListBox

Regards,
Dave

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Re: Link External (xerces jars ) to GWT application in Eclipse

[Dave]

Should it be org.w3c ?

On Jan 20, 10:25 pm, nikki  wrote:
> I am new to GWT and am building an application using some external
> jars such as xerces ,inspite of adding the jar files in the lib folder
> I get the error
>
> the import org.3wc cannot be resolved
>
> can someone please tell me if there is another way to include the jar
> files in a GWT application
>
> thanks

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Re: How to configure my web.xml

[Dave]

I fixed the error. I was unaware that I had to compile the application
before. I can't recall any literature which tells you to compile
before running. I felt that by running it as a web app, then the
requisite compilation would have been done automatically.

On Jan 10, 1:28 pm, Dave  wrote:
>  When I made the the following changes and I navigate 
> tohttp://localhost:/my_App.html?gwt.codesvr=127.0.1.1:9997#page1. I
> am getting "HTTP ERROR: 404 NOT_FOUND RequestURI=/my_app/service1".
>
> Changes:
>
> web.xml.
> 
>     service1
>     com.server.ServiceImpl1
>   
>   
>     service2
>     com.server.ServiceImpl2
>   
>
>   
>     service1
>     /my_app/service1
>   
>
>   
>     service2
>     /my_app/service2
>   
>
> My client side service interface is as follows
> @RemoteServiceRelativePath("service1")
> public interface MyService extends RemoteService
> {
>     //some function prototype
>    //some function prototype
>
> }
>
> I am following instruction found 
> at:http://code.google.com/webtoolkit/doc/1.6/tutorial/appengine.html#test.
> What am I doing wrong?
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Re: How to configure my web.xml

[Dave]

 When I made the the following changes and I navigate to
http://localhost:/my_App.html?gwt.codesvr=127.0.1.1:9997#page1. I
am getting "HTTP ERROR: 404 NOT_FOUND RequestURI=/my_app/service1".

Changes:

web.xml.

service1
com.server.ServiceImpl1
  
  
service2
com.server.ServiceImpl2
  

  
service1
/my_app/service1
  

  
service2
/my_app/service2
  

My client side service interface is as follows
@RemoteServiceRelativePath("service1")
public interface MyService extends RemoteService
{
//some function prototype
   //some function prototype
}

I am following instruction found at:
http://code.google.com/webtoolkit/doc/1.6/tutorial/appengine.html#test.
What am I doing wrong?
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How to configure my web.xml

[Dave]

I have had some success in setting up a single service which is called
through GWT-RPC. Now I have set up 2 services and I get this error:
This application is out of date, please click the refresh button on
your browser. ( Blocked attempt to access interface
'com.server.ServiceImpl1', which is not implemented by
com.server.ServiceImpl2'; this is either misconfiguration or a hack
attempt ).

I think the problem is in web.xml.
The URI's are implemented as follows: 
http://localhost:/my_App.html?gwt.codesvr=127.0.1.1:9997#page1
calls com.server.ServiceImpl1 and 
http://localhost:/my_App.html?gwt.codesvr=127.0.1.1:9997#page2
calls com.server.ServiceImpl2. These are some additional info of my
web.xml.


service1
com.server.ServiceImpl1
  
  
service2
com.server.ServiceImpl2
  

  
service1
/page1
  

  
service2
/page2
  

Could someone tell me what the problem is?
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Re: Validating user input

[Dave]

Thanks. I'll take a look.

On Jan 8, 6:50 am, Lukasz  wrote:
> Hi,
>
> In my current project I'm using the gwt validation library (http://
> sourceforge.net/projects/gwt-vl/) which supports both client- and
> server-side validation and integrates itself nicly with e.g. hibernate-
> validation ...
>
> Maybe it's something you're looking for.
>
> Kind regards,
> Lukasz
>
> On 7 Jan., 20:13, Dave  wrote:
>
> > Hi,
> >     Could someone point me to some resources that shows how to
> > validate user input. Specifically, to remove harmful javascript
> > injection attacks etc. I would like to see the validation code done at
> > both server and client. I have searched already and I come across
> > issues related to XSS and forged request etc.
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Validating user input

[Dave]

Hi,
Could someone point me to some resources that shows how to
validate user input. Specifically, to remove harmful javascript
injection attacks etc. I would like to see the validation code done at
both server and client. I have searched already and I come across
issues related to XSS and forged request etc.
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Re: How to use web.xml to authenticate a access to a single page

[Dave]

Thanks. It worked.

On Jan 2, 1:33 pm, philippe  wrote:
> Try with /* url-pattern
>
> On 1 jan, 22:40, Dave  wrote:
>
> > (Newbie) I have a web page that I want to authenticate users before
> > they are allowed to access the page. I set the authentication
> > parameters in the web.xml but it's not working. I use a hyperlink to
> > get this page. The address of this page in the browser 
> > ishttp://somewebsite.appspot.com/#page. Fragments of my web.xml is
> > below. What am i doing wrong?
>
> > 
> >   ...
>
> >   
> >         
> >             /*/page
> >         
> >         
> >             *
> >         
> >         
> >             CONFIDENTIAL
> >         
> >     
> > 

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Re: How to use web.xml to authenticate a access to a single page

[Dave]

I've made some minor progress. I have had some success with
deployment. Where the web address is http://somewebsite.appspot.com/#page.
That is, I am able to restrict user access on .../#page. I have used
the following web.xml.


  ...

  

/somewebsite/page/


*


CONFIDENTIAL




However, I can't get it to work locally. The local address that is
used is http://localhost:/Somewebsite.html?gwt.codesvr=127.0.1.1:9997#page.
What should my web.xml url pattern be set to? Thanks

Dave

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How to use web.xml to authenticate a access to a single page

[Dave]

(Newbie) I have a web page that I want to authenticate users before
they are allowed to access the page. I set the authentication
parameters in the web.xml but it's not working. I use a hyperlink to
get this page. The address of this page in the browser is
http://somewebsite.appspot.com/#page. Fragments of my web.xml is
below. What am i doing wrong?


  ...

  

/*/page


*


CONFIDENTIAL




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Re: New layouts not playing nicely with Maps

[Dave]

I solved the problem by using info gained from this site
http://googlegeodevelopers.blogspot.com/2009/01/google-maps-api-library-for-gwt.html.
This is a great help. On this page, to the left of the Google Maplet:
Click on "Source Code". Then click on the "Full Source" hyperlink.
Then Click on "CLA Designer". There are various files will be found
here. The important file to view is "MapsBlogDec08.java".

Jones

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Authenticate a web page

[Dave]

I have a web page that I want to authenticate a user before they are
allowed to access the page. I set the authentication parameters in the
web.xml but it's not working. I use a hyperlink to get this page. The
address of this page is http://somewebsite.appspot.com/#page and my
web.xml is below. What am i doing wrong?


  
  
loginService
edu.somewebsite.server.LoginServiceImpl
  

  
loginService
/somewebsite/login
  

  
  
Somewebsite.html
  

  

/somewebsite/page


admin


CONFIDENTIAL




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Re: New layouts not playing nicely with Maps

[Dave]

Eric,
I have the same problem as stated in 1st post above. I have read other
post and this problem seem to be persisted for sometime now as shown
is this earlier post
http://groups.google.com/group/Google-Web-Toolkit/browse_thread/thread/657ed9bb2e2e9011/794322db35f85adc?lnk=gst&q=Guillem#794322db35f85adc.
Rather than using timer hacks, I would have felt that this issue would
have been resolved by now. Anyway, I have tried several of the
techniques suggested in both post and to no avail. In the code below I
have placed 3 maps on a StackPanel. The map that is loaded on the 1st
sub-menu in the  stack panel is rendered properly but the other 2 sub-
menus in the stack panel has a 'grey area' for most of the map and the
map is not properly centered. The maps show up properly when I use a
Vertical Panel instead of a StackPanel. I don't want to use a Vertical
Panel I have placed the code below in an Ext-GWT widget. Could give me
some insights as to how fix this? I have already tried the
"checkResizeAndCenter()" function.

private void location()
{
//Function for "About Us -> Locations"

StackPanel spLocationMap = new StackPanel();
VerticalPanel vpLocationMap = new VerticalPanel();
Label lblHeading = new Label("Map of Campus Locations");

lblHeading.addStyleName("locationHeading");
vpLocationMap.add(lblHeading);
vpLocationMap.setSize("100%", "100%");
spLocationMap.setSize("100%", "100%");

spLocationMap.add(getMap(LatLng.newInstance(18.400754, 
-77.364009),
"Campus 1"), "Campus 1");
spLocationMap.add(getMap(LatLng.newInstance(18.456352, 
-77.396647),
"Campus 2"), "Campus 2");
spLocationMap.add(getMap(LatLng.newInstance(18.433755, 
-77.206820),
"Campus 3"), "Campus 3");

spLocationMap.addStyleName("spLocationHeader");

vpLocationMap.add(spLocationMap);
vpLocationMap.addStyleName("verticalPanelLocation");

center.removeAll();
center.add(vpLocationMap);
center.layout();
}

private MapWidget getMap(final LatLng point, final String campus)
{
Marker marker = new Marker(point);
final MapWidget map = new MapWidget(point, 15);
map.setSize("700", "488");
map.setScrollWheelZoomEnabled(true);
map.setDoubleClickZoom(true);
map.addOverlay(marker);
map.addControl(new SmallMapControl());
map.addControl(new MapTypeControl());
map.getInfoWindow().open(map.getCenter(), new InfoWindowContent
(campus));
marker.addMarkerClickHandler(new MarkerClickHandler()
{
@Override
public void onClick(MarkerClickEvent event)
{
InfoWindow info = map.getInfoWindow();
info.open(point, new InfoWindowContent(campus));
}
});
return map;
}

Jones

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Re: Adding a list of items to a widget using UiBinder

[Dave Finch]

I have found the answer to my own question. The parser used for
UIObjects is UIObjectParser which does not allow any child elements.
Currently in the SDK there is no way to register a custom parser
(although there is a TODO in the code to add such a mechanism). So
with the SDK as it is the only way to add child elements is to make my
rule extend Widget and my TextField implement HasWidgets.

Given that there seems to be intent to allow custom parsers I took the
decision to customize the UIObjectParser and basically add the
contents of the parse method from the HasWidgetsParser to the end of
the UIObjectParser parse method.

There does seem to be a bug in the UiBinderWriter#isWidgetElement
method simply checks whether the namespace of the element starts with
urn:import which obviously only checks the element maps to an object
although a class cast exception will result later if it is not a
Widget.

On Dec 12, 1:36 pm, Dave Finch  wrote:
> Hi,
>
> I am using the UiBinder mechanism in GWT 2.0 and have created a
> standard text field that includes a label, required icon etc. which
> all works great.
> The field also includes a list of validation rules which i currently
> add from the java code in my form class  but i would like to include
> them in my form.ui.xml file as follows:
>
>      xmlns:a='urn:import:com.acuedo.gwt.common.client.core.widgets'
>     xmlns:v='urn:import:com.acuedo.gwt.common.client.core.validation'
>     xmlns:gwt='urn:import:com.google.gwt.user.client.ui'>
>     
>         
>             
>                                      required="true" >
>                      errorMessage="Your title can only contain letters, numbers and
> spaces." />
>                 
>                 
>             
>         
>     
> 
>
> but this doesn't compile. I get the following error:
> 12:48:35.060 [ERROR] [admin] In
> com.google.gwt.uibinder.rebind.xmlelemen...@185ee14, found unexpected
> child ""
>
> Does anyone know if it is possible to do this and if so how?
>
> (My RegexRule class does not extend widget because it doesn't have any
> visual aspect.)
>
> Thanks,
> Dave

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Adding a list of items to a widget using UiBinder

[Dave Finch]

Hi,

I am using the UiBinder mechanism in GWT 2.0 and have created a
standard text field that includes a label, required icon etc. which
all works great.
The field also includes a list of validation rules which i currently
add from the java code in my form class  but i would like to include
them in my form.ui.xml file as follows:














but this doesn't compile. I get the following error:
12:48:35.060 [ERROR] [admin] In
com.google.gwt.uibinder.rebind.xmlelemen...@185ee14, found unexpected
child ""

Does anyone know if it is possible to do this and if so how?

(My RegexRule class does not extend widget because it doesn't have any
visual aspect.)

Thanks,
Dave

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ERROR: GWT.create() is only usable in client code! It cannot be called, for example, from server code.

[Dave]

I have the following code on my server

public ArrayList getAMIs()
{
ArrayList amis = new ArrayList();
int n;

AMI ami = new AMI();
GetResources amiResourceXML = new GetResources();

try
{
Document amiDom = 
XMLParser.parse(amiResourceXML.getAmi());
Element root = amiDom.getDocumentElement();
XMLParser.removeWhitespace(root);

...

}
catch
{ ..}
return "some value to client"
}

Why do I receive this error below?

SEVERE: [1259395014149000] javax.servlet.ServletContext log: Exception
while dispatching incoming RPC call
com.google.gwt.user.server.rpc.UnexpectedException: Service method
'public abstract java.util.ArrayList
com.clemson.client.AmazonService.getAMIs()' threw an unexpected
exception: java.lang.ExceptionInInitializerError
at com.google.gwt.user.server.rpc.RPC.encodeResponseForFailure
(RPC.java:360)
at com.google.gwt.user.server.rpc.RPC.invokeAndEncodeResponse
(RPC.java:546)
at com.google.gwt.user.server.rpc.RemoteServiceServlet.processCall
(RemoteServiceServlet.java:166)
at com.google.gwt.user.server.rpc.RemoteServiceServlet.doPost
(RemoteServiceServlet.java:86)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:713)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:806)
at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:
487)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter
(ServletHandler.java:1093)
at
com.google.apphosting.utils.servlet.TransactionCleanupFilter.doFilter
(TransactionCleanupFilter.java:43)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter
(ServletHandler.java:1084)
at com.google.appengine.tools.development.StaticFileFilter.doFilter
(StaticFileFilter.java:121)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter
(ServletHandler.java:1084)
at org.mortbay.jetty.servlet.ServletHandler.handle
(ServletHandler.java:360)
at org.mortbay.jetty.security.SecurityHandler.handle
(SecurityHandler.java:216)
at org.mortbay.jetty.servlet.SessionHandler.handle
(SessionHandler.java:181)
at org.mortbay.jetty.handler.ContextHandler.handle
(ContextHandler.java:712)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:
405)
at com.google.apphosting.utils.jetty.DevAppEngineWebAppContext.handle
(DevAppEngineWebAppContext.java:54)
at org.mortbay.jetty.handler.HandlerWrapper.handle
(HandlerWrapper.java:139)
at com.google.appengine.tools.development.JettyContainerService
$ApiProxyHandler.handle(JettyContainerService.java:342)
at org.mortbay.jetty.handler.HandlerWrapper.handle
(HandlerWrapper.java:139)
at org.mortbay.jetty.Server.handle(Server.java:313)
at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:
506)
at org.mortbay.jetty.HttpConnection$RequestHandler.content
(HttpConnection.java:844)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:644)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:381)
at org.mortbay.io.nio.SelectChannelEndPoint.run
(SelectChannelEndPoint.java:396)
at org.mortbay.thread.BoundedThreadPool$PoolThread.run
(BoundedThreadPool.java:442)
Caused by: java.lang.ExceptionInInitializerError
at com.google.gwt.xml.client.XMLParser.(XMLParser.java:28)
at com.clemson.server.AmazonServiceImpl.getAMIs
(AmazonServiceImpl.java:45)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke
(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke
(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.google.appengine.tools.development.agent.runtime.Runtime.invoke
(Runtime.java:100)
at com.google.gwt.user.server.rpc.RPC.invokeAndEncodeResponse
(RPC.java:527)
... 27 more
Caused by: java.lang.UnsupportedOperationException: ERROR: GWT.create
() is only usable in client code!  It cannot be called, for example,
from server code.  If you are running a unit test, check that your
test case extends GWTTestCase and that GWT.create() is not called from
within an initializer or constructor.
at com.google.gwt.core.client.GWT.create(GWT.java:85)
at com.google.gwt.xml.client.impl.XMLParserImpl.
(XMLParserImpl.java:29)
... 35 more
 Thanks

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Re: MouseOverHandler not called for text of Checkbox

[dave]

Thanks to both of you for the info.  I suspected it was an issue with
the CheckBox itself, but wanted to make sure that I wasn't missing
something obvious.

My fix (for now) has just been to manually add my own Label (instead
of using the CheckBox label) and handling mouse over the Label events,
as the CheckBox itself isn't essential.

If I do switch back, your suggestion of a Composite is exactly what
I'll do.
Thanks!

On Nov 20, 3:18 am, Thomas Broyer  wrote:
> On Nov 20, 2:01 am, dave  wrote:
>
> > First and only time I'll bump this, but I've yet to find a solution.
>
> > Adding a MouseOverHandler to the GWT CheckBox widget only fires when
> > mousing over the checkbox itself from the top, left, or bottom.  It
> > does not fire when mousing over the text label or  when moving from
> > the text over the actual checkbox.
>
> > How can I add a MouseOverHandler that will fire when over the label of
> > a CheckBox?
>
> If you ask me, this is a bug in CheckBox (it uses many "hacks" to get
> events sunk on the checkbox rather than  that encloses both the
> checkbox and label, which leads to this behavior and which I'm really
> not sure is needed –cannot it take advantage of events bubbling to the
> span?–)
>
> In the mean time, you'd have to copy/fix CheckBox (or in other words
> create your own).

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Re: MouseOverHandler not called for text of Checkbox

[dave]

First and only time I'll bump this, but I've yet to find a solution.

Adding a MouseOverHandler to the GWT CheckBox widget only fires when
mousing over the checkbox itself from the top, left, or bottom.  It
does not fire when mousing over the text label or  when moving from
the text over the actual checkbox.

How can I add a MouseOverHandler that will fire when over the label of
a CheckBox?


On Nov 5, 9:34 am, dave  wrote:
> I've got a GWTCheckbox(created with text label) to which I add a
> MouseOverHandler and MouseOutHandler with the goal of doing some
> action on hover (and closing when leaving).
>
> The problem is that the OverHandler is only called when hovering over
> the actualcheckboxsquare from the top, left, or right.  It does not
> fire when hovering over the text (or entering the actualcheckboxfrom
> the left, when already over the text label).
>
> The MouseOutHandler handles the text label correctly, as it is not
> called when moving the mouse from over the textbox to over the text.
> It is only fired (correctly) when leaving the text.
>
> What am I missing?  There's nothing fancy to my example: just aCheckboxin a 
> FlowPanel that adds the mouse handlers.
>
> Thanks for any tips!
> dave

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Re: Add widget recursively

[Dave]

I think this should be quite simple. Without writing a ton of code
that would already be in the StockWatcher example:

1. Create the popup panel with the layout you currently have.
2. Instead of the listbox, put a VerticalPanel in its place.
3. Create the first listbox and add it to the VerticalPanel.
4. On the label, add an onClick() handler:
4a. Each time the handler is clicked, create a new listbox with
whatever properties you want
4b. Add the new listbox to the VerticalPanel.

The VerticalPanel will allow it to keep adding listboxes, and should
shove the buttons down below the last row in the panel.

If you need reference to all the listboxes, just create an
ArrayList which contains each newly created listbox.

Hope that helps. If you need code, I'm sure someone can oblige, but
all of this is very basic stuff that the StockWatcher tutorial covers.

Dave


On Oct 23, 4:06 am, MarcoGT  wrote:
> Hi all,
>
> I have got a popup panel that looks like this:
>
> listbox1 - label
> button1 button2
>
> I would like that when label is clicked, a listbox identical to
> listbox1 appears before two buttons...how to do?
> Obviously, if I clicked three times on label, three listboxes have to
> appears...
>
> I am stuck.
>
> Thanks,
> Marco

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Re: GWT, MVP a beginner's question

[Dave Pinn]

What is your alternative, Miroslav?
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Re: GWT, MVP a beginner's question

[Dave Pinn]

You would typically have one presenter and one view for each discrete
part of the page. The idea is to componentise the parts of the page so
that they can be re-used in a variety of contexts; for example: you
might have a page navigation sub-panel that gets used on several
pages.

To re-use your panel do something like this:

  public MyContainingPresenter(MyContainingPresenter.Display
display, MyReusablePanel subPanel) {
...
display.setSubPanel(subPanel.getDisplay().asWidget()).
...
  }
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Re: 3rd party widget pluggable interface

[Dave]

Hi,

I had a similar requirement.  Essentially I was trying to create a web
app, that had a number of default forms where users would enter data,
but I wanted the ability to add new forms on the fly (typically from a
third-party source).

The simplest approach I found was to define my forms with XML.  When
the app loads, it gets the XML from the server side and builds the
list of forms.
When a user actually loads a form, a parser goes through the XML and
constructs the appropriate widgets.

e.g.


  
Default Value
Default Value
  


The is obviously a simple version, but the above would construct a new
form and add a 1x2 grid to it hopefully looking something like:

__
| |
| test name __   |
||__|  |
|_|


To add a new file on the fly a third-party just needs to submit the
forms xml to the server side DB.  When a client refreshes their
browser the latest list of forms will be brought over.



On Sep 29, 4:45 am, Matt  wrote:
> Hi,
>
> I was wondering if it's possible at all, or if anyone has suggestions
> on best practices for plugging additional widgets into a GWT app after
> compile?
>
> We have a fat client app that has a pretty large set of functionality
> that we're porting to GWT, but occasionally clients needs some
> specific additional functionality, currently we support the ability to
> do this by a COM interface in our C++ app.
>
> I'm looking to replicate a similar ability in a GWT app, from what I
> can tell there is no way to do this other than providing a javascript
> interface that gets wrapped by a handler frame that has a JSNI
> interface. Is this really the only way to handle this case?
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Re: SmartGWT Extensions

[tall dave]

might try the smartclient forums - http://forums.smartclient.com.
they have one specific to SmartGWT, believe the authors are pretty
active on it.

there's a sticky thread - GWT-RPC DataSource implementation with
sample code.  using that i was able to build a GWT-RPC datasource
successfully.


On Sep 24, 1:35 pm, Thomas Holmes  wrote:
> I did use one example of a GWT-RPC datasource for SmartGWT, and I got
> very, very close.
> I can get the data from my spring beans, and I copied data to my DTO
> objects.
> But, the SmartGWT ListGrid shows 23 rows, and the right column names,
> but no data is listed there.
>
> So, I was re-reading the thread again, and I was looking at the
> smartgwt-extensions ... but there is a bug in it, and I don't know how
> I can tell the author that it is broken.
>
> In "SimpleGwtRPCDSServiceAsync" the remove method:
> public abstract void remove (SimpleGwtRPCDSRecord record,
> AsyncCallback asyncCallback);
> Breaks the code "SimpleGwtRPCDSService"
> Changing the line to:
> public abstract void remove (SimpleGwtRPCDSRecord record,
> AsyncCallback asyncCallback);
>
> This then breaks "SimpleGwtRPCDS" when we call:
> service.remove (testRec, new AsyncCallback () {});
>
> Anyone run into this before and how to fix it?
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Re: blank page and other weirdness after upgrade, 1.5 to 1.7

[Dave]

Thanks for the replies, guys.
Thanks for validating what I was seeing, Rajeev. (and sorry for
jumping to @ss_umptions)

Best,
Dave

On Aug 31, 2:50 pm, Rajeev Dayal  wrote:
> Hi Dave,
>
> As with Isaac and Ian, I did not receive your response either.
>
> I'm glad that you figured the problem out. Isaac is correct in his
> assessment; I've confirmed that it is indeed a problem to give an element in
> your HTML page an id which matches the name of your module. I've opened the
> following bug:
>
> http://code.google.com/p/google-web-toolkit/issues/detail?id=4003
>
> Rajeev
>
> On Mon, Aug 31, 2009 at 2:26 PM, Isaac Truett  wrote:
>
> > No worries.
>
> > I looked up your message directly in Groups, and I see that you
> > identified your problem as being a div with an ID that's the same as
> > your module name. I don't believe this is a documented gotcha, but I
> > do recall seeing another instance of it on the forum recently. What I
> > don't recall seeing is an explanation of why this should be a problem.
> > My guess is that something in the bootstrapping wants to use the
> > module name as an ID and having another element in the HTML with that
> > ID causes the conflict. But again, that's only a guess.
>
> > On Mon, Aug 31, 2009 at 2:03 PM, Dave wrote:
>
> > > Yeah, it's good to be reminded never to make assumptions - thanks,
> > > Isaac.
>
> > > Dave
>
> > > On Aug 31, 10:40 am, Isaac Truett  wrote:
> > >> Dave,
>
> > >> I can't speak for Rajeev, but your reply to him never reached my
> > >> inbox. I understand your frustration. Do please try to be nice.
>
> > >> Thanks,
> > >> Isaac
>
> > >> On Mon, Aug 31, 2009 at 1:27 PM, Dave wrote:
>
> > >> > Why say something like 'post back here and we'll dig deeper' if you
> > >> > don't intend to follow the thread and make good on your promise?
>
> > >> > Dave
>
> > >> > On Aug 25, 9:20 am, Rajeev Dayal  wrote:
> > >> >> Hey Dave,
> > >> >> A couple things to try:
>
> > >> >> -Blow away the mmclient subdirectory located under your war directory
> > >> >> -Clear your FF3 cache
>
> > >> >> Try that out and see if that helps. If not, post back here and we'll
> > dig
> > >> >> deeper.
>
> > >> >> Rajeev
>
> > >> >> On Mon, Aug 24, 2009 at 2:36 PM, Dave  wrote:
>
> > >> >> > Hi all,
>
> > >> >> > I'm getting several problems after upgrading to 1.7.
> > >> >> > In hosted mode:
> > >> >> > - all the http status codes are 304 (Not Modified)
> > >> >> > - I only see a blank page
> > >> >> > - when I Compile/Browse, FF3 tells me GWT Module needs to be (re)
> > >> >> > compiled, (I've tried refreshing first - same thing)
> > >> >> > - if I change the module name to something bogus in my host html
> > file,
> > >> >> > and refresh, things seem to work.
> > >> >> > For example, when I change from  to  > >> >> > id="x_mmcclient">, I still get 304s, but I also get
> > >> >> >  [ERROR] Unable to load module entry point ...
> > >> >> >   com.google.gwt.core.client.JavaScriptException: (Error): Invalid
> > >> >> > argument.
> > >> >> >     number: -2147024809
> > >> >> >   description: Invalid argument.
> > >> >> >  [ERROR] Failure to load module 'mmcclient'
> > >> >> > with the line number of my entry point class where I call
> > >> >> >  RootPanel.get("mmcclient").add(containerLayout);
>
> > >> >> > But then the module is loaded and my app is fine. No blank page!
>
> > >> >> > - finally, one of my css resource directories (sc) must be copied
> > into
> > >> >> > the public root, otherwise it will not be found.
>
> > >> >> > Some further info,
> > >> >> > the war directory structure looks like this (my module name is
> > >> >> > mmcclient),
> > >> >> > - war
> > >> >> >  - conf
> > >> >> >  - images
> > >> >> >  - mmcclient
> > >> >> >  - sc
> > >> >> >  - WEB-INF
> > >> >> >  - MMCClient.css
> > >> >> >  - MMCClient.html
>
> > >> >> > The module is loaded from the host html as:
> > >> >> >     > >> >> > src="mmcclient/mmcclient.nocache.js">
> > >> >> > Even when I get a blank page, I believe this file is being found.
> > >> >> > (Firebug shows its JS functions).
>
> > >> >> > I'm working with the Eclipse (3.4.2) GWT plugin, if that's
> > important.
>
> > >> >> > Thanks for any advice!
> > >> >> > -Dave
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Re: blank page and other weirdness after upgrade, 1.5 to 1.7

[Dave]

Thanks ddsnelle, but I'm fairly certain that I've got the app deployed
correctly.

Regards,
Dave.

On Sep 2, 8:05 am, ddsnelle  wrote:
> Dave, make sure you have published your application to the server
> correctly.
>
> Copy the contents of this folder:  .\workspace\GWT Test Project
> 1\war
> To your webapps folder:  \webapps\gwt_test_project_1
>
> "webapps/gwt_test_project" should look like this:
>   gwt_test_project
>   WEB-INF
>   GWT_Test_Project_1.css
>   GWT_Test_Project_1.html
>
> Good luck!
>
> On Aug 25, 4:20 pm, Dave  wrote:
>
> > Thanks Rajeev.
> > I understand where the 304s are coming from (basically, cache
> > indications). I can clear these while running in hosted mode, (on
> > windows) by running delete files in Internet Tools.
> > So the main problem is the blank page. What I've discovered is that
> > using the module name ('mmcclient') as a dom identifier in the index
> > file, seems to cause the server to stop processing the entry point
> > code, and thus give me essentially a blank page.
> > Maybe this is a no-no, that I missed in the docs/readme. However, in
> > case it's a new issue I'll describe what I'm doing:
>
> > What I did is create a sample gwt project, which runs fine and lets me
> > enter my user name. Next I added
>
> >  after the h1 header line,   Web
> > Application Starter Project
>
> > so now the index file looks like:
>
> > 
> > 
> >   
> >     
> >      > href="Bcc_mmcclient_gwt_test1.css">
> >     Web Application Starter Project
> >      > src="mmcclient/mmcclient.nocache.js">
> >   
> >   
> >     Web Application Starter Project
> >         
>
> >     
> >       
> >         Please enter your
> > name:
> >       
> >       
> >         
> >         
> >       
> >     
> >   
> > 
>
> > I also inserted a trace statement in the entry point method:
> > System.out.println("in entry point"); so now the MMCClient class looks
> > like:
>
> > public class MMCClient implements EntryPoint {
> >         private static final String SERVER_ERROR = "An error occurred while 
> > "
> >                         + "attempting to contact the server. Please check 
> > your network "
> >                         + "connection and try again.";
>
> >         private final GreetingServiceAsync greetingService = GWT
> >                         .create(GreetingService.class);
>
> >         public void onModuleLoad() {
> >                 System.out.println("in entry point");
>
> >                 final Button sendButton = new Button("Send");
> >                 final TextBox nameField = new TextBox();
> >                 nameField.setText("GWT User");
> > ...
>
> > }
>
> > After clean and build, and gwt compile, when I run the gwt launcher, I
> > only see
> >   Web Application Starter Project
> >        Please enter your name:
>
> > There is no input field or send button and the host browser status
> > line says 'Done'
>
> > Now, if I change the div id to xmmcclient, as  > div>, and run it again, everything works.
>
> > So my conclusion is not to use the module name as a DOM ID...
>
> > Am I onto something? - sorry if this is already documented somewhere
> > obvious -
>
> > Thanks,
> > Dave
>
> > On Aug 25, 9:20 am, Rajeev Dayal  wrote:> Hey Dave,
> > > A couple things to try:
>
> > > -Blow away the mmclient subdirectory located under your war directory
> > > -Clear your FF3 cache
>
> > > Try that out and see if that helps. If not, post back here and we'll dig
> > > deeper.
>
> > > Rajeev
>
> > > On Mon, Aug 24, 2009 at 2:36 PM, Dave  wrote:
>
> > > > Hi all,
>
> > > > I'm getting several problems after upgrading to 1.7.
> > > > In hosted mode:
> > > > - all the http status codes are 304 (Not Modified)
> > > > - I only see a blank page
> > > > - when I Compile/Browse, FF3 tells me GWT Module needs to be (re)
> > > > compiled, (I've tried refreshing first - same thing)
> > > > - if I change the module name to something bogus in my host html file,
> > > > and refresh, things seem to work.
> > > > For example, when I change from  to  > > > id="x_mmcclient">, I still get 304s, 

Re: blank page and other weirdness after upgrade, 1.5 to 1.7

[Dave]

Yeah, it's good to be reminded never to make assumptions - thanks,
Isaac.


Dave

On Aug 31, 10:40 am, Isaac Truett  wrote:
> Dave,
>
> I can't speak for Rajeev, but your reply to him never reached my
> inbox. I understand your frustration. Do please try to be nice.
>
> Thanks,
> Isaac
>
> On Mon, Aug 31, 2009 at 1:27 PM, Dave wrote:
>
> > Why say something like 'post back here and we'll dig deeper' if you
> > don't intend to follow the thread and make good on your promise?
>
> > Dave
>
> > On Aug 25, 9:20 am, Rajeev Dayal  wrote:
> >> Hey Dave,
> >> A couple things to try:
>
> >> -Blow away the mmclient subdirectory located under your war directory
> >> -Clear your FF3 cache
>
> >> Try that out and see if that helps. If not, post back here and we'll dig
> >> deeper.
>
> >> Rajeev
>
> >> On Mon, Aug 24, 2009 at 2:36 PM, Dave  wrote:
>
> >> > Hi all,
>
> >> > I'm getting several problems after upgrading to 1.7.
> >> > In hosted mode:
> >> > - all the http status codes are 304 (Not Modified)
> >> > - I only see a blank page
> >> > - when I Compile/Browse, FF3 tells me GWT Module needs to be (re)
> >> > compiled, (I've tried refreshing first - same thing)
> >> > - if I change the module name to something bogus in my host html file,
> >> > and refresh, things seem to work.
> >> > For example, when I change from  to  >> > id="x_mmcclient">, I still get 304s, but I also get
> >> >  [ERROR] Unable to load module entry point ...
> >> >   com.google.gwt.core.client.JavaScriptException: (Error): Invalid
> >> > argument.
> >> >     number: -2147024809
> >> >   description: Invalid argument.
> >> >  [ERROR] Failure to load module 'mmcclient'
> >> > with the line number of my entry point class where I call
> >> >  RootPanel.get("mmcclient").add(containerLayout);
>
> >> > But then the module is loaded and my app is fine. No blank page!
>
> >> > - finally, one of my css resource directories (sc) must be copied into
> >> > the public root, otherwise it will not be found.
>
> >> > Some further info,
> >> > the war directory structure looks like this (my module name is
> >> > mmcclient),
> >> > - war
> >> >  - conf
> >> >  - images
> >> >  - mmcclient
> >> >  - sc
> >> >  - WEB-INF
> >> >  - MMCClient.css
> >> >  - MMCClient.html
>
> >> > The module is loaded from the host html as:
> >> >     >> > src="mmcclient/mmcclient.nocache.js">
> >> > Even when I get a blank page, I believe this file is being found.
> >> > (Firebug shows its JS functions).
>
> >> > I'm working with the Eclipse (3.4.2) GWT plugin, if that's important.
>
> >> > Thanks for any advice!
> >> > -Dave
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Re: ext-GWT vs GWT-ext

[Dave]

GWTExt is not dead, they're still making maintenance releases, but the
lead developer (Sanjiv Jivan) has moved on to SmartGWT. ExtGWT --which
contains the JS underlying GWTExt - upto 2.0.2-- did a dirty move a
year or so ago when they changed their licensing model; as a result
there was a falling out between the two projects.

IMO, SmartGWT is the widget library of choice. It's based on a mature
Java enterprise client/server technology (SmartClient); seven years of
RIA experience; great support, and the project is lead by Sanjiv
Jivan. Here's a good discussion of its merits (article goes beyond
Groovy): 
http://www.cacoethes.co.uk/blog/groovyandgrails/introducing-smartgwt-to-grails

Regards,
Dave

On Aug 30, 4:54 pm, Thomas Broyer  wrote:
> On 30 août, 11:59, muhannad nasser  wrote:
>
> > i wanna choose one of these libraries to start my project... i am searching
> > for a good comparison between those two or any other library that may do the
> > job...
>
> GWT-Ext was a *wrapper* around the pure-JS Ext-JS lib, just like
> SmartGWT is a wrapper around SmartClient (AFAICT); this means that
> your page will load the whole set of widgets, classes, methods, etc.
> even those that won't ever be used.
>
> Ext-GWT (or GXT) on the other hand is a *port* of Ext-JS over to GWT,
> which means that only the code you actually use will end in the
> javascript loaded by the browser.
>
> That being said, I haven't ever used any of those libs, so I can't
> really tell which one to choose...
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Re: blank page and other weirdness after upgrade, 1.5 to 1.7

[Dave]

Why say something like 'post back here and we'll dig deeper' if you
don't intend to follow the thread and make good on your promise?

Dave

On Aug 25, 9:20 am, Rajeev Dayal  wrote:
> Hey Dave,
> A couple things to try:
>
> -Blow away the mmclient subdirectory located under your war directory
> -Clear your FF3 cache
>
> Try that out and see if that helps. If not, post back here and we'll dig
> deeper.
>
> Rajeev
>
> On Mon, Aug 24, 2009 at 2:36 PM, Dave  wrote:
>
> > Hi all,
>
> > I'm getting several problems after upgrading to 1.7.
> > In hosted mode:
> > - all the http status codes are 304 (Not Modified)
> > - I only see a blank page
> > - when I Compile/Browse, FF3 tells me GWT Module needs to be (re)
> > compiled, (I've tried refreshing first - same thing)
> > - if I change the module name to something bogus in my host html file,
> > and refresh, things seem to work.
> > For example, when I change from  to  > id="x_mmcclient">, I still get 304s, but I also get
> >  [ERROR] Unable to load module entry point ...
> >   com.google.gwt.core.client.JavaScriptException: (Error): Invalid
> > argument.
> >     number: -2147024809
> >   description: Invalid argument.
> >  [ERROR] Failure to load module 'mmcclient'
> > with the line number of my entry point class where I call
> >  RootPanel.get("mmcclient").add(containerLayout);
>
> > But then the module is loaded and my app is fine. No blank page!
>
> > - finally, one of my css resource directories (sc) must be copied into
> > the public root, otherwise it will not be found.
>
> > Some further info,
> > the war directory structure looks like this (my module name is
> > mmcclient),
> > - war
> >  - conf
> >  - images
> >  - mmcclient
> >  - sc
> >  - WEB-INF
> >  - MMCClient.css
> >  - MMCClient.html
>
> > The module is loaded from the host html as:
> >     > src="mmcclient/mmcclient.nocache.js">
> > Even when I get a blank page, I believe this file is being found.
> > (Firebug shows its JS functions).
>
> > I'm working with the Eclipse (3.4.2) GWT plugin, if that's important.
>
> > Thanks for any advice!
> > -Dave
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Re: PlaceManager etc

[Dave Pinn]

I've learned a lot from looking at the Hupa code; thanks very much for
that.

+1 on the call for more information about PlaceManager. Or maybe some
more comments in the code? ;-)

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Re: GWT and Spring

[Dave]

Very nice, thank you!

On Aug 24, 11:43 am, Alec  wrote:
> On my website,http://minetats.com, I have another example on how one
> could use GWT and Spring together - a menu-driven web application. I
> use commands on both client and server sides. On the server, I use
> ServiceLocatorFactoryBean as well as Spring Security (with a GWT-
> driven login page). Please take a look if interested.
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blank page and other weirdness after upgrade, 1.5 to 1.7

[Dave]

Hi all,

I'm getting several problems after upgrading to 1.7.
In hosted mode:
- all the http status codes are 304 (Not Modified)
- I only see a blank page
- when I Compile/Browse, FF3 tells me GWT Module needs to be (re)
compiled, (I've tried refreshing first - same thing)
- if I change the module name to something bogus in my host html file,
and refresh, things seem to work.
For example, when I change from  to , I still get 304s, but I also get
  [ERROR] Unable to load module entry point ...
   com.google.gwt.core.client.JavaScriptException: (Error): Invalid
argument.
 number: -2147024809
   description: Invalid argument.
  [ERROR] Failure to load module 'mmcclient'
with the line number of my entry point class where I call
  RootPanel.get("mmcclient").add(containerLayout);

But then the module is loaded and my app is fine. No blank page!

- finally, one of my css resource directories (sc) must be copied into
the public root, otherwise it will not be found.

Some further info,
the war directory structure looks like this (my module name is
mmcclient),
- war
  - conf
  - images
  - mmcclient
  - sc
  - WEB-INF
  - MMCClient.css
  - MMCClient.html

The module is loaded from the host html as:

Even when I get a blank page, I believe this file is being found.
(Firebug shows its JS functions).

I'm working with the Eclipse (3.4.2) GWT plugin, if that's important.

Thanks for any advice!
-Dave



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Re: Creating a plugin framework with GWT

[Dave]

Cheers Nathan,

That's a useful response.  I didn't feel happy trying to send the UI
classes across RPC, for the reasons you stated.  I'm still looking at
ways, where I will let developers 'produce' plugins that consist of a
back and frontend. So the frontend widget/java script can easily be
loaded, although I like your HTML suggestion.

On Aug 22, 9:06 pm, Nathan Wells  wrote:
> Dave,
>
> the first thing need to know is that you're attempting to break some
> core rules. Widgets can only be created on the client-side. There are
> numerous reasons for this, but essentially it boils down to this: RPC
> calls should be about the model... data transfer, not UI component
> transfer. That's not to say that what you're talking about is
> impossible, it's just not going to be as pretty as you would like it
> to be. You can make it so that your TreeItem contains an "HTML"
> widget. Then you would probably provide some hook on the server-side
> for someone to specify what that html is.
>
> Again, this breaks the rules, though
>
> On Aug 21, 4:56 am, Dave  wrote:
>
> > Hi,
>
> > I am trying to figure out how to create a pluginframeworkwith GWT,
> > let me explain
>
> > I have created an application that has a menu on the left side and a
> > form on the right site of the screen.  The menu is a tree and the form
> > is a vertical panel (think of the example mail application).
>
> > I have created a new class called CustomTreeItem that extends
> > TreeItem.
> > My custom class contains a member variable which is a vertical panel.
> > When a user click on a instance of CustomTreeItem in the menu the
> > vertical panel is displayed on the right site of the screen.
>
> > I would like to extend this by allowing developers to produce custom
> > forms. i.e allow developers to add in there own CustomTreeItems,
> > without having to recompile with my code.
> > My inital plan was to have a directory in the classpath, so at runtime
> > a class loader on the server side would look for any classes that were
> > derived from my CustomTreeItem in that folder and load them.
> > The client would make an RPC request for the tree items, so it could
> > build up the Tree.  I quickly discovered that VerticalPanel couldn't
> > be serialized (I assume because this is translated to javascript), so
> > this wouldn't work.
>
> > Is it possible for developers to create a vertical panel, and then
> > translate it to js (storing it somewhere on the server)
> > Then within my application if I know the name of the js/verticalpanel
> > instance, load in and construct the panel?
>
> > Any info/ideas/suggestions would be appreciated
>
> > Cheers
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Creating a plugin framework with GWT

[Dave]

Hi,

I am trying to figure out how to create a plugin framework with GWT,
let me explain

I have created an application that has a menu on the left side and a
form on the right site of the screen.  The menu is a tree and the form
is a vertical panel (think of the example mail application).

I have created a new class called CustomTreeItem that extends
TreeItem.
My custom class contains a member variable which is a vertical panel.
When a user click on a instance of CustomTreeItem in the menu the
vertical panel is displayed on the right site of the screen.

I would like to extend this by allowing developers to produce custom
forms. i.e allow developers to add in there own CustomTreeItems,
without having to recompile with my code.
My inital plan was to have a directory in the classpath, so at runtime
a class loader on the server side would look for any classes that were
derived from my CustomTreeItem in that folder and load them.
The client would make an RPC request for the tree items, so it could
build up the Tree.  I quickly discovered that VerticalPanel couldn't
be serialized (I assume because this is translated to javascript), so
this wouldn't work.

Is it possible for developers to create a vertical panel, and then
translate it to js (storing it somewhere on the server)
Then within my application if I know the name of the js/verticalpanel
instance, load in and construct the panel?

Any info/ideas/suggestions would be appreciated

Cheers

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Re: Modelling framework

[tall dave]

is it still possible to download the non-Pro/EE version of SmartGWT?
the page at:

http://www.smartclient.com/smartgwt/download.jsp

isn't working.


On Aug 4, 9:16 pm, ckendrick  wrote:
> We do give you the ability get in and override any part of the
> generated SQL as a Velocity template.  Simple example:
>
>    http://www.smartclient.com/smartgwtee/showcase/#large_valuemap_sql
>
> Tour de force (dynamic reporting with filter, sort and data paging, no
> server code required):
>
>    http://www.smartclient.com/smartgwtee/showcase/#sql_dynamic_reporting
>
> I think that would cover you for lot of use cases.  If there's
> something more we should be doing here I'd love to know.
>
> Note that we also have upcoming support for XML DB (Berkeley OSS and
> Oracle flavors).  It's just another type of DataSource, which
> generates XQuery instead of SQL.
>

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need a GWT developer

[Dave]

I am new to this board, so hopefully this is allowed.

I have an open contract consulting position onsite in greater Tampa/
Sarasota/Bradenton area for a GWT Developer.  It is a long-term
position and would love to find someone from this discussion group who
really wants to work with GWT (not as a pilot or poc but really using
it inside and out) with an entire team focused on this.  Anyone
interested please contact david.bern...@4t-us.com or 404.323.3765.

Other skills beyond working experience with GWT listed below

Required skills (4-10+ years):

 Working development experience with the following Tech
stack:  J2ee, Eclipse, JBoss, Oracle back-end

 Solid understanding of object oriented design principles
including UML

   Three or more years of java development experience
including multithreaded, JDBC, servlets, JSP, RMI,JMS, EJB

   Experience with java performance profiling

   Strong Oracle/PL/SQL background

   Experience developing Oracle functions and procedures

   Experience in web design, HTML and Java Script

   Knowledge of XML

   Ability to extend existing object models when appropriate
and create new models when necessary

   Detailed experience with documentation of and adherence to
technical standards for a software development environment


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@DontCompileToJavaScript method annotation

[Dave Ford]

Are there any plans for gwt to provide a method annotation that
instructs the GWT compiler to *not* include that particular method in
the generated JavaScript. Here is my justification for this feature.

One of the appeals of GWT (for me) is that I have been able to achieve
a decent amount of client/server code reuse. Specifically, i have a
number of classes that I can use on both the server (in a jvm) and in
the browser (in my gwt app). This is a huge benefit of GWT over, say,
Flex or native JavaScript frameworks.

I can't be the only one who appreciates this benefit. Here is an
entire product to address this same concern (only inverted):
http://www.aptana.com/jaxer

The problem is, creating java classes that run in the server and in
client (gwt app) can lead to jumping thru lots of whoops and some
major code refactoring. There are many times where it would be just so
easy (if such a thing existed) to add an annotation to a method (or a
class).
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Re: The @skip javadoc tag

[Dave Ford]

That makes since. I was hoping they added a tag for us to use to tell
the gwt compiler to omit that method from the JavaScript.

I think I will post a new topic asking about that.

On Jun 21, 12:25 pm, gscholt  wrote:
> On Jun 21, 6:43 pm, Dave Ford  wrote:
>
> > What does the @skipjavadoc comment tag do?
>
> > I was browsing thru the svn source and saw the @skipjavadoc tag. For
> > example:
>
> >http://google-web-toolkit.googlecode.com/svn/trunk/user/super/com/goo...
>
> > I was thinking that it might be a way to say, don't translate this
> > method into javascript. If so, can we use it in our code?
>
> It is related to the _documentation_, since it is a javadoc tag, not a
> method annotation.
> Since the methods with that javadoc tag are all methods on a JRE
> emulation class that do not appear on the normal JRE class, I suspect
> the @skipkeeps the menthod from being listed 
> onhttp://code.google.com/webtoolkit/doc/1.6/RefJreEmulation.html
>
> Gert
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Re: GWT 1.6 and mysql; hosted mode server restart issue

[Dave Ford]

I have a similar problem, but no fix yet. It really cancels out the
benefit of the new (in 1.6) super fast "restart server" button in
hosted mode,  because i *still* have to restart the entire shell ever
time i change server side code. Although, i am not getting any mysql
errors.

All i know is that, the "restart server" button does not seem to pick
up my changes to server-side code and i have restart the shell every
time.

On May 13, 3:49 pm, ec  wrote:
> I started a new project using gwt 1.6.4 in eclipse and added the mysql
> connector. I copied the mysql connector jar into the war/WEB_INF/lib
> directory. When I first run hosted mode the application works fine.
> However if I make code changes and then use theRestartServer button
> from Hosted Mode the server can no longer find the mysql connector and
> gives a "java.sql.SQLException: No suitable driver found for
> jdbc:mysql://localhost/"
>
> Anyone experienced this and found a fix?
>
> Thanks.
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The @skip javadoc tag

[Dave Ford]

What does the @skip javadoc comment tag do?

I was browsing thru the svn source and saw the @skip javadoc tag. For
example:

http://google-web-toolkit.googlecode.com/svn/trunk/user/super/com/google/gwt/emul/java/lang/Number.java

I was thinking that it might be a way to say, don't translate this
method into javascript. If so, can we use it in our code?
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Migrate 1.4 to 1.6

[Dave]

How feasible is it to migrate from 1.4 to 1.6 without an intermediate
migration to 1.5 on a large app?
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Re: GWT 1.6.4 - Intellij 8.1 - Hosted mode via application start.

[Dave M]

I am using intellij 8.1 with no problem using GWT.  Just open up the
documents and follow the instructions.  It has changed slightly from
the directions in the flash demo on their web site.  When I clicked
... New...there was no option for GWT if you follow the instructions
from the flash demo but if you follow the instructions in the
documentation, it works with the 1.6.4 plugin.

Dave

Again,  follow the instructions in the manual

On Tue, Apr 21, 2009 at 4:15 PM, Jason  wrote:
>
> Hi all.
>
> I'm using Intelli-j 8.1 to build my GWT 1.6.4 application.  I realize
> that Intell-j's GWT plugin isn't suited for 1.6.4 just yet.  Avoiding
> the plugin I'm attemping to run in Hosted mode by running the app as a
> normal Java application.
>
> Main class: com.google.gwt.dev.HostedMode
> VM params: -Xmx500M
> program params: -startupUrl /enroll/default.html
> com.vincent.gwtapps.webApplicationForm.WebEnroll
> working dir: C:\work\jv_websales\WebApplicationForm\current_branch\out
> \exploded\
>
> When I deploy the application with my own ant scripts the application
> loads fine under it's own tomcat instance.
>
> The only difference I see between my ant war and the exploded intelli-
> j war directory is that the hex js files aren't there, for example
> (644251F628D38C39522797805967F32D.cache.html).  The directory only has
> the 2 files, clear.cache.gif, hosted.html, and webenroll.nocache.js.
> Does hosted mode need those files, or are they generated by the GWT
> hosted mode browser?  If they need it, I suppose I could run an ant
> task to generate them, prior to running the application.
>
> This is the stacktrace I get when loading the application:
>
> [ERROR] Failure to load module 'webenroll'
> java.lang.NoSuchMethodError:
> org.eclipse.jdt.internal.compiler.lookup.ProblemReferenceBinding.closestReferenceMatch
> ()Lorg/eclipse/jdt/internal/compiler/lookup/ReferenceBinding;
>        at com.google.gwt.dev.javac.JsniChecker$CheckingVisitor.findClass
> (JsniChecker.java:231)
>        at com.google.gwt.dev.javac.JsniChecker$CheckingVisitor.checkRefs
> (JsniChecker.java:142)
>        at com.google.gwt.dev.javac.JsniChecker$CheckingVisitor.endVisit
> (JsniChecker.java:65)
>        at org.eclipse.jdt.internal.compiler.ast.MethodDeclaration.traverse
> (MethodDeclaration.java:247)
>        at org.eclipse.jdt.internal.compiler.ast.TypeDeclaration.traverse
> (TypeDeclaration.java:1222)
>        at
> org.eclipse.jdt.internal.compiler.ast.CompilationUnitDeclaration.traverse
> (CompilationUnitDeclaration.java:518)
>        at com.google.gwt.dev.javac.JsniChecker.check(JsniChecker.java:350)
>        at com.google.gwt.dev.javac.JsniChecker.check(JsniChecker.java:340)
>        at
> com.google.gwt.dev.javac.CompilationUnitInvalidator.validateCompilationUnits
> (CompilationUnitInvalidator.java:159)
>        at com.google.gwt.dev.javac.CompilationState.compile
> (CompilationState.java:198)
>        at com.google.gwt.dev.javac.CompilationState.refresh
> (CompilationState.java:178)
>        at com.google.gwt.dev.javac.CompilationState.
> (CompilationState.java:93)
>        at com.google.gwt.dev.cfg.ModuleDef.getCompilationState
> (ModuleDef.java:264)
>        at com.google.gwt.dev.cfg.ModuleDef.getTypeOracle(ModuleDef.java:325)
>        at com.google.gwt.dev.SwtHostedModeBase
> $SwtBrowserWidgetHostImpl.createModuleSpaceHost(SwtHostedModeBase.java:
> 66)
>        at com.google.gwt.dev.shell.ie.BrowserWidgetIE6$External.gwtOnLoad
> (BrowserWidgetIE6.java:73)
>        at com.google.gwt.dev.shell.ie.BrowserWidgetIE6$External.invoke
> (BrowserWidgetIE6.java:161)
>
>
> Thanks for any help.
> Jason
>
> >
>

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Re: 1.6 Compile problem on Mac OSX

[Dave Finch]

Thanks everyone for the replies.

I'll work around it for now, I always have a windows VM if need be.

Dave


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Re: stateful service

[Dave M]

Thanks for the reply.  I will definitely look at this for
authentication.  Although this doesn't appear to be the full answer to
my question.  Maybe I just don't understand some fundamental piece.  I
am very familiar with java programming but haven't done too much of
the web stuff.  I am used to rmi iiop, and swing/awt thin clients.
The service will be run on the web server.  Whenever I log in for the
first time using this authentication method, I kick off a thread.  I
want to be able to log out and reconnect the next day and gain control
and monitor that same thread (Timertask) that I started the previous
day.  I am guessing since I kicked the thread off in the Impl (service
running on the web server) class, this thread is running inside of the
web server (tomcat).  Do I have to set up a service on the machine
that my Impl class can connect to using rmi or something.  I didn't
want to do this as it adds an extra layer to the connection so I was
hoping to have just the Impl class with a timertask that I can just
control from the web and it maintains state and continues to run.
When I log out, will the thread be garbage collected or can I log back
into the same object running the thread and control/monitor the same
thread?

Thanks again for any reply.

On Sun, Apr 19, 2009 at 6:32 AM, Vitali Lovich  wrote:
> Depends on who initiates the service.  If it's the other machine (not the
> web server), then in general no, unless you run a custom web server on it
> that will convert resource requests (images or JS scripts only) into
> commands (the authentication information will have to be encoded in the
> names in addition to the commands if you have to have authenticated service)
> .  This is quite complicated.
>
> If the web server can control the service, then a simple authenticated RPC
> call will suffice.  Don't bother with cookies if you are using RPC.
> http://code.google.com/p/google-web-toolkit/wiki/RpcAuth
>
> On Sat, Apr 18, 2009 at 11:16 PM, joshmo  wrote:
>>
>> What I want to do is log in to an application.  Once logged in, the
>> user clicks a button to start a service.  Then the user will remain
>> logged in and monitor the service.  The service is used for
>> transferring files a different computer to the computer the web server
>> is running on.  The web page will update every minute with status of
>> server and bandwidth used.  User can log out and log in the next day
>> to the same service and continue to monitor the service.
>>
>> Is this possible? I have been reading about setting a cookie with a
>> session id but I don't know if this is going to work or not.  Does
>> anyone know if you can maintain session state with a service and that
>> service continues to run in a daemon thread even if the user logs out?
>>
>> Thanks for any response.
>>
>>
>
>
> >
>

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1.6 Compile problem on Mac OSX

[Dave Finch]

Hi,

I am using the new eclipse (3.4) plugin with GWT 1.6.4 on Mac OSX
10.5.

Everything works great when my project is using Java 5 but when I
switch to Java 6 and try to GWT compile I get the following error:

Invalid memory access of location  rip=01160767

This is a problem for me because I want to use a server side library
that depends on Java 6.

I have had a search through the issue log and the groups but haven't
found anyone with a similar problem - am I doing something wrong?

Does anyone know whether this is a known issue or a possible work
around?

Thanks in advance,
Dave
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Re: Running GWT code before third-party script tags

[Dave Schweisguth]

The problem turns out to be that the script I'm adding uses
document.write, which can only be used to add to the page while the
page is being built. After DOMContentReady, document.write opens a new
output stream (too lazy to go back and check the right browser speak
here) and writing to it replaces the entire page. So we'll need to add
our scripts to the page using a different approach entirely. Right now
I'm considering running the script in an iframe or object tag.
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How to create listbox with nothing selected by default?

[Dave E]

I'm trying to create a listbox with a visibleItemCount of more than
one (I want a list, not a dropdown), with none of the items in the
list selected by default.  I've tried everything I can think of, and
I'm still seeing the first item selected by default in both IE and the
native development browser (it happens to work the way I want in
firefox though).  I found another post suggesting setting the selected
index to -1, then programatically "unsetting" the previously selected
item setItemSelected(index, false), but that doesn't work for me
either.  Anyone have any ideas how I might accomplish this?  Seems
like it should be easy, but I'm embarassed to admit I've already spent
hours trying to get it working.

Thanks,
-Dave

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Listbox and ability to have no item selected

[Dave E]

I am trying to create a single-select listbox where the visibleItem
count is greater than 1 (not a dropdown), but no items are selected by
default.  Regardless of what I try, IE and the development browser
seem to display the first element in the list as highlighted/selected.
(It does seem to work the way I'd like in firefox.)  I've tried
programatically setting the selectedIndex to -1 after my list is
created, but that doesn't seem to help.  Anyone have any ideas for how
I might accomplish this?  Seems like it should be a simple task, but
I'm embarassed to say I've spent way too much time on it already.

Thanks,
-Dave

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Re: Running GWT code before third-party script tags

[Dave Schweisguth]

Eric, thanks for clarifying that scripts added in GWT run
asynchronously. Still don't see why adding the script would fail to
work or why one of the symptoms of the failure would be an error in
the map. I think the next experiment will simply be to remove the map
and see if everything else works without it -- and, if so, to be more
controlling about map initialization. Cheers!
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Re: Running GWT code before third-party script tags

[Dave Schweisguth]

Hi Eric! Thanks for your suggestions. I think you're on to something
-- that is, because an error turns up in map code, it seems like
something is happening concurrently that shouldn't -- but I'm still
trying to work out what's going on.

My understanding of the page-building process is that the browser
loads HTML until it hits an in-line script, stops everything until the
script has executed, and then resumes loading the regular HTML. This
is what happens with our various third-party scripts now. By the time
GWT loads, all of the third-party scripts should already have run (and
that's certainly what it looks like on the page and in Firebug).

Now, the change I'm trying to make is to move one of those script tags
to GWT. I'm not trying to call any functions defined by those scripts
myself, just to add them to the page and let them write HTML (or, in
at least one case, another script tag, which then writes HTML). I'd
expect all of that to happen in the single Javascript thread.

As for the map, we are using the gwt-google-apis maps library. We
don't try to defer map creation, because we don't want to defer the
map; we want it first.

So when I tried moving one of the scripts to onModuleLoad, the script
was probably trying to execute at the same time as map code (haven't
looked into the guts of the map, but there must be XHRs in there and
those can be concurrent) but it's not clear to me

a) why the script had the result it did, of replacing the whole page
with the contents of executing the script
b) why it would bother the map (since they should have been working in
different divs)

Hope that might ring another bell for you.

Now I'm starting to wonder whether I should wait for the map to finish
initializing, and how I might go about that. Not sure if the part of
the map API we're using now has any such notion. Possibly your loader
is the answer after all, since it can tell me when the map is done.
I'll be happy to hear any other thoughts in the meantime, though --
I'm still unclear as to why my first solution didn't just work.

Thanks!
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