Re: Is there any integration between GWT and Google Web Designer ?

[yves]

I would rather think about getting from the Designer a GWT-compatible code 
in java !
Yves

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Is there any integration between GWT and Google Web Designer ?

[yves]

Hi

It is not about the old GWT Designer but well about this tool 
https://www.google.com/webdesigner/ !

I don't use Google Web Designer, but I wonder if there might be any mean to 
produce GWT compatbile code with this tool ?

Thanks
Yves

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Re: CellTable keyboard events troubles in Chrome

[yves]

Hi Jens,

Thanks a lot for the suggestion, it works.
I used the dev version because in the past it was needed for the dev mode.

I installed the last stable version, and it is ok also with the dev mode.

Thanks
Yves


Le mardi 5 novembre 2013 21:40:43 UTC+1, Jens a écrit :

 Have you also tried the stable chrome channel instead of the dev channel?

 -- J.


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Re: GWT components aren't displaying

[yves]

Hi,

I don't know if you did it or not (not seen in your example) : the 
Usuario dto class must also implements Serializable.
HTH
Yves


Le dimanche 10 novembre 2013 19:34:37 UTC+1, Jairo de Almeida a écrit :

 hi Group, 
 Someone get problems with serialized pojo in comunication about client and 
 server layers in GWT applications?
 I'm seeing the objects(POJOs) reach in debug mode correctly, but the 
 client components aren't displayed correctly, ListBox display empty.

 I will send a resume of application source
 http://pastebin.com/gyi5jpY5

 I'm not undertand why i get the object correctly for example in 
 System.out.println(dto) , but in component ListBox not display without 
 exceptions
 Thanks for Help Guys, See 
 Jairo.




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Re: CellTable keyboard events troubles in Chrome

[yves]

I know this is not a funny question, but if someone already had this kind 
of issue or have any suggestion, help would be very appreciated as I could 
not make it work correctly in Chrome.

GWT-team ?

Thanks
Yves


Le dimanche 3 novembre 2013 19:37:03 UTC+1, yves a écrit :

 Hi All,

 After a search on the internet and in this group I didn't found help for 
 the issue I have. 
 So I ask here if someone has any advice or workaround.

 I just tried basic example of CellTable found here 
 http://www.gwtproject.org/doc/latest/DevGuideUiCellWidgets.html, and put 
 the cellTable in an empty VerticalPanel somewhere in my app.

 In Chrome only, the example doesn't work correctly : almost all keyboard 
 events have no effect. Only Delete, Backspace, CTRL-Z + other CTRLs and 
 ENTER keys work. It is impossible to type in some text : alphanumeric key 
 events have no effect on the content of the cells.

 With other browsers than Chrome the CellTable example works without any 
 problem !

 For the test I use :
 GWT 2.5.1
 Test NOT OK : Chrome 32.0.1687.2 dev-m Aura
 Test OK : Firefox : 24.0
 Test OK : Opera : 12.11
 Test OK : Safari : 5.1.7
 (no test on IE as I have only IE6, for other tests purpose...)

 Thank you for your help.
 Yves


   /**
* A simple data type that represents a contact with a unique ID.
*/
   private static class Contact {
 private static int nextId = 0;

 private final int id;
 private String name;

 public Contact(String name) {
   nextId++;
   this.id = nextId;
   this.name = name;
 }
   }

   /**
* The list of data to display.
*/
   private static final ListContact CONTACTS = Arrays.asList(new 
 Contact(John), new Contact(Joe), new Contact(George));

   /**
* The key provider that allows us to identify Contacts even if a 
 field
* changes. We identify contacts by their unique ID.
*/
   private static final ProvidesKeyContact KEY_PROVIDER =
   new ProvidesKeyContact() {
 @Override
 public Object getKey(Contact item) {
   return item.id;
 }
   };

 .

 initWidget(uiBinder.createAndBindUi(this));
 
 // Create a CellTable with a key provider.
 final CellTableContact table = new 
 CellTableContact(KEY_PROVIDER);

 table.setKeyboardSelectionPolicy(KeyboardSelectionPolicy.ENABLED);
 
 // Add a text input column to edit the name.
 final TextInputCell nameCell = new TextInputCell();
 ColumnContact, String nameColumn = new ColumnContact, 
 String(nameCell) {
   @Override
   public String getValue(Contact object) {
 // Return the name as the value of this column.
 return object.name;
   }
 };
 table.addColumn(nameColumn, Name);

 // Add a field updater to be notified when the user enters a new 
 name.
 nameColumn.setFieldUpdater(new FieldUpdaterContact, String() {
   @Override
   public void update(int index, Contact object, String value) {
 // Inform the user of the change.
 Window.alert(You changed the name of  + object.name +  to 
  + value);

 // Push the changes into the Contact. At this point, you could 
 send an
 // asynchronous request to the server to update the database.
 object.name = value;

 // Redraw the table with the new data.
 table.redraw();
   }
 });

 // Push the data into the widget.
 table.setRowData(CONTACTS);
 
 vp.add(table);



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CellTable keyboard events troubles in Chrome

[yves]

Hi All,

After a search on the internet and in this group I didn't found help for 
the issue I have. 
So I ask here if someone has any advice or workaround.

I just tried basic example of CellTable found here 
http://www.gwtproject.org/doc/latest/DevGuideUiCellWidgets.html, and put 
the cellTable in an empty VerticalPanel somewhere in my app.

In Chrome only, the example doesn't work correctly : almost all keyboard 
events have no effect. Only Delete, Backspace, CTRL-Z + other CTRLs and 
ENTER keys work. It is impossible to type in some text : alphanumeric key 
events have no effect on the content of the cells.

With other browsers than Chrome the CellTable example works without any 
problem !

For the test I use :
GWT 2.5.1
Test NOT OK : Chrome 32.0.1687.2 dev-m Aura
Test OK : Firefox : 24.0
Test OK : Opera : 12.11
Test OK : Safari : 5.1.7
(no test on IE as I have only IE6, for other tests purpose...)

Thank you for your help.
Yves


  /**
   * A simple data type that represents a contact with a unique ID.
   */
  private static class Contact {
private static int nextId = 0;

private final int id;
private String name;

public Contact(String name) {
  nextId++;
  this.id = nextId;
  this.name = name;
}
  }

  /**
   * The list of data to display.
   */
  private static final ListContact CONTACTS = Arrays.asList(new 
Contact(John), new Contact(Joe), new Contact(George));

  /**
   * The key provider that allows us to identify Contacts even if a 
field
   * changes. We identify contacts by their unique ID.
   */
  private static final ProvidesKeyContact KEY_PROVIDER =
  new ProvidesKeyContact() {
@Override
public Object getKey(Contact item) {
  return item.id;
}
  };

.

initWidget(uiBinder.createAndBindUi(this));

// Create a CellTable with a key provider.
final CellTableContact table = new 
CellTableContact(KEY_PROVIDER);

table.setKeyboardSelectionPolicy(KeyboardSelectionPolicy.ENABLED);

// Add a text input column to edit the name.
final TextInputCell nameCell = new TextInputCell();
ColumnContact, String nameColumn = new ColumnContact, 
String(nameCell) {
  @Override
  public String getValue(Contact object) {
// Return the name as the value of this column.
return object.name;
  }
};
table.addColumn(nameColumn, Name);

// Add a field updater to be notified when the user enters a new 
name.
nameColumn.setFieldUpdater(new FieldUpdaterContact, String() {
  @Override
  public void update(int index, Contact object, String value) {
// Inform the user of the change.
Window.alert(You changed the name of  + object.name +  to  
+ value);

// Push the changes into the Contact. At this point, you could 
send an
// asynchronous request to the server to update the database.
object.name = value;

// Redraw the table with the new data.
table.redraw();
  }
});

// Push the data into the widget.
table.setRowData(CONTACTS);

vp.add(table);

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Re: Offline debugging my gwt app

[yves]

Hello GWT-team guys !
Nobody has an idea at least if is it a bug or a feature?
Thanks a lot for your help
Yves

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Re: Offline debugging my gwt app

[yves]

Yes hosted.html is included in the CACHE section of the manifest.
I don't have a devmode.js file.
Yves

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Offline debugging my gwt app

[yves]

Hello All,

I need to debug my gwt app. The problem is that I need to debug it OFFLINE.
After a tour on the net, I didn't found an answer.

Thus here is the scenario.

My GWT version is 2.4.0

Debugging the code is ok.
Running in production offline is ok, using a cache manifest.

But I can't do both : debugging offline.

To avoid any config difference, I use exactly the same tomcat server 
deployment to run in production or in debug mode (thus with the debug 
option -noserver).
The cache manifest is built in runtime by a dedicated service whose 
response depends on the current permutation.

When online, the manifest is always requested in debug and in production 
mode (confirmed by tracing). (a subsidiary question is : why in production 
the manifest is called twice and in debug it is called once ?).

Then I stopped tomcat.
= In production offline the gwt app is running correctly.
= In debug offline, nothing is displayed : the browser has loaded the app 
html file from its cache (confirmed by displaying the page source code), 
but the browser remains empty, the gwt app is not running.

It seems that when offline, the google dev plugin doesn't communicate 
correctly with the IDE as it even doesn't realize when the development mode 
is stopped in the IDE (the black overlay with the message Plugin failed to 
connect to Development Mode server at localhost:9997 is no displayed). May 
be the plugin is not started when offline ?

In order to help me test my app when offline, does anybody knows why the 
app is not running in debug offline mode and how to make it run ?

Thanks a lot !
Yves

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Re: Offline debugging my gwt app

[yves]

Thanks for your answer, but my question is about the HTML5 offline feature. 
Sorry if my post was not clear.

The problem is that I can't debug the GWT app while running it without a 
connection to the site server, thus offline.

Yves

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Re: RPC call in Activity onStop()

[yves]

Hi,

Finally I didn't succeed to make an RPC call from the overridden 
AbstractActivity.onStop().
Actually the GWT doc says about onStop() : Called when the Activity's 
widget has been removed from view.
I guess that all the RPC mechanisms is already destroyed because the server 
never get called.

@Milan : I can't make the call during mayStop because I don't know at that 
moment whether the user will choose to close or not the activity. The RPC 
call must be executed only when the activity is effectively stopped.

The only ugly workaround I found is a kind of watchdog between the client 
and the server so that the client periodically tells to the server I am 
still here.


If someone succeeded to make an RPC call during onStop(), I would 
appreciate the feedback :-)

Yves

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Re: Is it possible to create screens at runtime?

[yves]

Unless I don't understand your question, this is THE main GWT feature, thus 
smart-gwt too !
Yves

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Re: RPC call in Activity onStop()

[yves]

The use case is when one is closing the browser or the tab or when 
navigating to another url, thus really quitting the GWT application, not 
just changing Place.
I found that apparently in this case the 
ActivityManager.onPlaceChange(PlaceChangeEvent event) seems to be never 
called.
And then onStop() is NOT called in my use case.

Yves

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Re: RPC call in Activity onStop()

[yves]

Sorry for my late reaction.
Indeed I don't need the callback, I just need to send a terminates 
message to the server to release some temporary work data.
As it didn't worked, I removed this part of the code, so I can't give right 
now an example. But the fact is that the server didn't received the call 
(checked with a lot of debug logs and breakpoints).
I'll try again, also with the addClosingHandler() which I didn't knew.
Thanks for the suggestion.
I'll come back soon.
Yves

Le mardi 19 février 2013 23:45:32 UTC+1, Jens a écrit :

 I don't see why it should not work. You can do an RPC request in 
 Activity.onStop() but you have to be aware of the fact that the activity 
 will continue to stop while the request is pending. So your request's 
 callback should not do anything that depends on the activity state or its 
 view (which will be detached after the activity is stopped).

 You can also do a RPC request in Window.addClosingHandler() which will be 
 called before the window/tab gets closed. But again in this case the 
 callback is probably never called as the window/tab gets closed while the 
 request is pending. All you could do here is telling the server that the 
 app terminates now and let the server invalidate the users session for 
 example.

 Have you checked FireBug/Chrome Devtools and verified that no last request 
 is made?

 -- J.


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Re: RPC call in Activity onStop()

[yves]

Actually it is a subclass of AbstractActivity and onStop() is overridden.
The fact the widget is being destroyed (? I am not sure of what really 
happens at this moment) could be the source of the problem because I have a 
lot of things to do during the onStop() call and something might go wrong 
in the client.
Thanks for input.
Yves

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Re: RPC call in Activity onStop()

[yves]

Not any suggestion ?
Thanks
Yves

Le dimanche 17 février 2013 23:47:12 UTC+1, yves a écrit :

 Hi,

 After a search on the net I didn't find an answer to this problem : I need 
 to make an RPC call from the onStop() function in order to inform the 
 server that the application is closing.

 Apprently this doesn't work : the server never gets RPC-called from 
 onStop(). (I checked that onStop is called...)

 Thus my questions are :
 1) Is it really impossible to make an RPC call during the onStop process ?
 2) In case it is impossible, is there any way to know that the app is 
 closing so I can make a last RPC call ?

 Thank you for your suggestions.
 Yves


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RPC call in Activity onStop()

[yves]

Hi,

After a search on the net I didn't find an answer to this problem : I need 
to make an RPC call from the onStop() function in order to inform the 
server that the application is closing.

Apprently this doesn't work : the server never gets RPC-called from 
onStop(). (I checked that onStop is called...)

Thus my questions are :
1) Is it really impossible to make an RPC call during the onStop process ?
2) In case it is impossible, is there any way to know that the app is 
closing so I can make a last RPC call ?

Thank you for your suggestions.
Yves

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Re: Could not load GWT DMP Plugin

[yves]

It doesn't work for me.
Chrome 24.0.1305.3 dev-m
plugin 1.0.11357
win XP SP3

I found that it might be blocked by norton anti-virus : googleupdate.exe 
was blocked (severity : medium)
I found another problem in norton history log :  the dev plugin dll is 
identifid as a threat Suspicious.Cloud.7.EP (severity : high)
c:\documents and settings\yves\local settings\application 
data\google\chrome\user 
data\default\extensions\jpjpnpmbddbjkfaccnmhnkdgjideieim\1.0.11357_0\winnt_x86-msvc\npgwtdevplugin.dll

HTH
Yves

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Re: Inserting a DIV in a GWT Panel

[yves]

I'm not sure, but try to remove the style display:none or change it
(something like footer.setProperty(display, xxx)) when you append
the element.
Yves

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Which value is returned by Element.getStyle() getProperty() ?

[yves]

Hello All,

My question seems trivial : what is the contract of Element.getStyle()
getProperty() ?
Of course the question relies on the GWT implementation, which is in
Style.java :
  private native String getPropertyImpl(String name) /*-{
return this[name];
  }-*/;

Thus what is the javascript contract, more precisely :
- does it return the default value as defined by W3C, if any ?
- does it return the value defined in the css file, if any ?
- does it return the value passed to the last call to setProperty(),
if any ?

I guess that might be some priority between these possibilities ?

Also, does anybody know if there is any difference in the contract
between versions of CSS or versions of HTML ?
And also, are there any differences beween browsers, with a GWT
workaround providing a uniform contract ?

Even if this question might be trivial, I didn't found an answer on
the net :-)

Thanks for your comments !
Yves

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Re: Which value is returned by Element.getStyle() getProperty() ?

[yves]

Thanks for this interesting link!

I found, among others, 2 complementary answers:
- element.style.getPropertyValue(styleName) gives the value defined in
the style attribute of the element, as coded in the html file.
- window.getComputedStyle(element, null).getPropertyValue(styleName)
gives the actual used value to render the element, taking into
account the element's style attribute, css style sheet file and any
programatic changes.

After some tests it seems that the GWT implementation in Style.java
(return this[name];) is equivalent to
element.style.getPropertyValue(name).


There is one more question left : this doesn't always work for
shorthand properties !

For example, let's take the PushButton as defined in the GWT clean
theme css file, and look at the values returned by
window.getComputedStyle(element, null).getPropertyValue(styleName) :

- the background property value as defined in clean is
url('images/hborder.png') repeat-x 0px -27px which is returned by
window.getComputedStyle in its used value form = ok
- the border property value as defined in clean is 1px solid
#bbb but an empty string is returned by window.getComputedStyle =
not ok !!
This is probably because the border-bottom property is also defined
that breaks the possibility to get a global value for the border
property.

May be in this case the only way to get the border value is to read
the css file using something like
var ss = document.styleSheets[1];
return ss.cssRules[0].style.border;

But it is no more a used value as defined here
https://developer.mozilla.org/en/CSS/used_value

Yves

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[gwt-contrib] @com.google.gwt.user.client.impl.DOMImpl::eventGetTypeInt(Ljava/lang/String;)': JS value of type null, expected int

[yves]

Hello,

I am running myapp in dev mode in chrome and I got the following
error.
Versions are : gwt 2.4.0v201203300216-rel-37  / eclipse 3.7  / chrome
19.0.1084.1 dev-m

After a search in this group, I didn't found something related to this
issue, thus I post it.
Yves


20:54:31.000 [ERROR] [myapp] Uncaught exception escaped

com.google.gwt.dev.shell.HostedModeException: Something other than an
int was returned from JSNI method
'@com.google.gwt.user.client.impl.DOMImpl::eventGetTypeInt(Ljava/lang/
String;)': JS value of type null, expected int
at
com.google.gwt.dev.shell.JsValueGlue.getIntRange(JsValueGlue.java:266)
at com.google.gwt.dev.shell.JsValueGlue.get(JsValueGlue.java:144)
at
com.google.gwt.dev.shell.ModuleSpace.invokeNativeInt(ModuleSpace.java:
247)
at
com.google.gwt.dev.shell.JavaScriptHost.invokeNativeInt(JavaScriptHost.java:
75)
at
com.google.gwt.user.client.impl.DOMImpl.eventGetTypeInt(DOMImpl.java)
at
com.google.gwt.user.client.impl.DOMImpl.eventGetTypeInt(DOMImpl.java:
62)
at com.google.gwt.user.client.DOM.eventGetType(DOM.java:602)
at com.google.gwt.user.client.ui.Widget.onBrowserEvent(Widget.java:
164)
at com.google.gwt.user.client.DOM.dispatchEventImpl(DOM.java:1351)
at com.google.gwt.user.client.DOM.dispatchEvent(DOM.java:1307)
at sun.reflect.GeneratedMethodAccessor34.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:
172)
at
com.google.gwt.dev.shell.BrowserChannelServer.reactToMessagesWhileWaitingForReturn(BrowserChannelServer.java:
337)
at
com.google.gwt.dev.shell.BrowserChannelServer.invokeJavascript(BrowserChannelServer.java:
218)
at
com.google.gwt.dev.shell.ModuleSpaceOOPHM.doInvoke(ModuleSpaceOOPHM.java:
136)
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:213)
at sun.reflect.GeneratedMethodAccessor31.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:
172)
at
com.google.gwt.dev.shell.BrowserChannelServer.reactToMessages(BrowserChannelServer.java:
292)
at
com.google.gwt.dev.shell.BrowserChannelServer.processConnection(BrowserChannelServer.java:
546)
at
com.google.gwt.dev.shell.BrowserChannelServer.run(BrowserChannelServer.java:
363)
at java.lang.Thread.run(Thread.java:619)

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[gwt-contrib] Missing compiler error message for serializable object

[yves]

Hi,

With GWT 2.1.1, I made a novice-mistake in the declaration of a
serializable object : I forgot the mandatory zero-arg constructor.
This object is used in RPC exchange between the GWT client and the
server.

In runtime I got an ugly
com.google.gwt.user.client.rpc.SerializationException Unexpected
error...  message.
After digging and debugging during one full day into a.o. the GWT-
generated-javascript and trying other ways to exchange my data (while
many other objects are correctly transfered to and from the
server...), I finally made a change that suddenlly produced a compiler
mesage saying explicitly that the zero-arg constructor is missing.

My question is : why in only one case the error message is produced,
and not in my all other trials ? This is very frustrating :-)

The case where the compiler produces the error message is when I
create an explicit RPC method passing explicitly the object in
parameter.

While all other cases where the compiler does not produce the error
message, are when the object is passed as a parameter of a common
method usgin a parent class param signature.

Example:

class MyBadObject extends ParentObject {
// missing zero-arg contructor
// but has constructor with arg !
...
}

class ParentObject implements Serializable { ... }

1) The case producing the compiler message:

MyService extends RemoveService {
   public void myRPCSpecificMethod(MyBadObject param);
}

2) The case where the compiler error message does not give any
message :

MyService extends RemoveService {
   public void myRPCCommonMethod(ParentObject param);
}

and the method is called with a new MyBadObject(...) param value.

A simple compiler warning message saying : Did you forgot the zero-
arg constructor in this serializable sub-class ? would have been very
usefull. (I am using the INFO loglevel compiler param, thus I get all
ERROR and WARN messages).

Altough I am using GWT 2.1.1, I did not see this correction in the
release notes until GWT 2.3

Thanks for your comments
Yves

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[gwt-contrib] TabLayoutPanel problem with customheader

[yves]

Hi,

As I'am trying to create a TabLayoutPanel with 2 customheaders, for
each header I made this kind of stuff in the ui.xml :
g:customHeader
g:Label addStyleNames='newuser-tab' 
ui:field='cpnyLoginTabLbl'/
/g:customHeader

(of course : distinct ui:field for each header)

Then programatically, after the
initWidget(uiBinder.createAndBindUi(this)); for each header I made
this kind of stuff :
cpnyLoginTabLbl.setText(Login);

(of course : distinct ui:field and text for each header)

As a result, the browser (FF3.6) displayed the 2nd tab at the 1st
position, and the 1st tab was empty (no text in the header, the header
is a small few pixels square) and in last position.

To avoid this I had to replace the lines in the ui.xml in this way :

g:customHeader
g:Label addStyleNames='newuser-tab'
ui:field='cpnyLoginTabLbl'Login/g:Label
/g:customHeader

where I put the text directly in the ui.xml instead of
programatically.

With the text in the ui.xml it is displayed correctly.

This is very annoying as I need to set the text programatically with
I18N. I could do this in the ui.xml but it will multiply the number of
requested properties files.

Did I missed something or is it a bug ?

Thanks
Yves

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[gwt-contrib] Re: TabLayoutPanel problem with customheader

[yves]

Sorry, I found my mistake.

The customheader works very fine !

Please, discard my post.
Yves

On 2 jan, 11:02, yves yves.ko...@gmail.com wrote:
 Hi,

 As I'am trying to create a TabLayoutPanel with 2 customheaders, for
 each header I made this kind of stuff in the ui.xml :
                         g:customHeader
                                 g:Label addStyleNames='newuser-tab' 
 ui:field='cpnyLoginTabLbl'/
                         /g:customHeader

 (of course : distinct ui:field for each header)

 Then programatically, after the
 initWidget(uiBinder.createAndBindUi(this)); for each header I made
 this kind of stuff :
                         cpnyLoginTabLbl.setText(Login);

 (of course : distinct ui:field and text for each header)

 As a result, the browser (FF3.6) displayed the 2nd tab at the 1st
 position, and the 1st tab was empty (no text in the header, the header
 is a small few pixels square) and in last position.

 To avoid this I had to replace the lines in the ui.xml in this way :

                         g:customHeader
                                 g:Label addStyleNames='newuser-tab'
 ui:field='cpnyLoginTabLbl'Login/g:Label
                         /g:customHeader

 where I put the text directly in the ui.xml instead of
 programatically.

 With the text in the ui.xml it is displayed correctly.

 This is very annoying as I need to set the text programatically with
 I18N. I could do this in the ui.xml but it will multiply the number of
 requested properties files.

 Did I missed something or is it a bug ?

 Thanks
 Yves

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Re: To GWT or Not to GWT

[yves]

Hi,

Some times ago I had same kind of questions than bkardell.

Actually I would reformulate it another way : I compare the problem to
an .exe that is using .dll files

If you build a new .exe app you may reuse existing .dlls

I understand that this is not possible with GWT as when you compile
your GWT-app, you compile the entire code in once.
The big advantage is the javascript optimization.

But would it be possible in the future to allow building GWT-app by
reusing previously built GWT-dlls ?
This implies that those GWT-dlls have a know API-contract used by
the main GWT-exe

In a distributed and disparate environment this has been solved with
the SOA concept using SOAP, an ESB,... with all the paylod and
complexity allowing the communication between the components.

So I don't have in mind an ESB solution, as the environment is not
distributed nor disparate.

But in the context of GWT, would it be nonsense (for the future of
course) to build new app by using pre-compiled building blocks having
their own life-cycle independant of each other ?

Yves



On 15 déc, 21:40, zixzigma zixzi...@gmail.com wrote:
 if you use JQuery or any other Library,
 there is a core JSLibrary,
 and third party plugins.

 in a typical app/site you end up adding plugin after plugin to your
 site/app.

 each of those plugins are developed by separate developer somewhere in
 the world.
 they might have used similar utility library, but when you use them
 together you have no idea.

 so this problem is not a GWT related problem.

 your team/company should put in a place a process regarding code-
 reuse.

 one alternative could be to rely on only one 3rd party provider, such
 as Ext,
 you can be pretty sure that they have a common base library
 underneath.
 you might have to pay. well decisions are about tradeoff.
 the other alternative is assembling random plugins over the internet,
 developed by developers with varying degree of skills.
 you end up with bloated tangled JavaScript code, where plugin after
 plugin,
 contains duplicate code. this is the case with JQuery plugins.

 JQuery itself is a neat library,
 but if you assemble random plugins you found over the internet,
 the problem you described also applies.

 and it is not just JavaScript,in any programming language,
 if you rely on third-party packages/libraries, there is a good chance
 there might be a fair amount of duplication,
 resulting in larger size of file.
 thats why in Java World, build tools such as Maven, help manage
 dependencies, so you don't use more than what you need.
 but even then, each of the .jar in your project, might have used
 custom String/Math/Algorithms utility classes.

 it is not a GWT problem, becareful when using external libraries.
 tradeoff: you get a piece of functionality out of the box VS
 maintainability and duplication

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Re: ClassT is not serializable ?

[yves]

Indeed, it seems to be good solutions too.
Thanks
Yves

On 15 déc, 10:15, Paul Robinson ukcue...@gmail.com wrote:
 You don't have to hard code anything to send class names. In the client,
 you can use this:

 class MyTypeT extends MyGen  implements Serializable {

     String className;

     MyType() {} // mandatory no-arg contructor

     MyType(T anObject) { // with a non-null param value !
        this.className = anObject.getClass().getName();
     }

 }

 or this:

 class MyTypeT extends MyGen  implements Serializable {

     String className;

     MyType() {} // mandatory no-arg contructor

     MyType(Class? extends T  cls) { // with a non-null param value !
        this.className = cls.getName();
     }

 }

 and then on the server, if you need a Class rather than a String, use 
 Class.forName(myType.className)

 HTH
 Paul

 On 14/12/10 18:49, yves wrote:

  Hi all, thanks for your comments and advices.

  To solve my problem I'll do something like Didier said : I'll
  instantiate an object of type T (which is Serializable), instead of
  ClassT, and pass it to the server via the RPC.

  class MyTypeT extends MyGen  implements Serializable {

      T anObject;

      MyType() {} // mandatory no-arg contructor

      MyType(T anObject) { // with a non-null param value !
         this.anObject = anObject;
      }
  }

  Doing so, the server will receive a MyType object, will recognize the
  type T of anObject and will be able to select the right handler.
  And even the generics is not anymore required as the type of anObject
  will be checked dynamically by the server.

  Actually class.getCanonicalName() is not implemented too in GWT, so my
  previous post is not realistic.

  I personnaly prefer this solution than harcode the full className (as
  it will change if I reorganize the packages...)

  Regards
  Yves

  On 14 d�c, 15:51, epeplisc...@googlemail.com  wrote:

  you dont need to, just put a fullyqualified classname on the wire and
  forName() it in the VM. you may also think about providing your custom
  field serializer for the class, but actually would be nonsense  since
  you anyway cannot use it reasonably on the client

  On 14 Dez., 12:20, yvesyves.ko...@gmail.com  wrote:

  @Didier
  Of course MyType implements Serializable . It is just a typo in the
  example. Sorry.

  @Paul
  I didn't realized that Class is not GWT-serializable. Thanks for your
  remark. I lost pretty much time to find out why I get an exception
  during an RPC call

  It would have been nice if ClassT  was serializable. I would have
  used it to select an appropriate handler at server-side. Anyway I use
  instead the canonical class name to map the handler, but the code is
  little bit more uggly :-)

  I noticed also the a call to class.hashCode() does not give the same
  value in the (gwt-compiled)-client and in the (JVM running)-server.
  In my attempts to workaround the unserializability of Class, I tried
  to use the hashCode() value, unsuccessfully...

  Regards
  Yves

  On 14 d�c, 10:42, Paul Robinsonukcue...@gmail.com  wrote:

  Class is not gwt-serializable.

  MyType has a non-final, non-transient field of type Class

  Therefore MyType is not serializable

  On 14/12/10 09:33, Didier Durand wrote:

  Hi,

  Serializable is an interface not a class. That's why it's not the list
  you mention. An interface has nothing to be serialized per se.

  You should let us know about your class MyType in order to better
  help.

  regards

  didier

  On Dec 14, 9:21 am, Paul Robinsonukcue...@gmail.com    wrote:

  If you look at the Class.java that GWT uses to emulate the JVM's Class,
  you'll see that it does not implement Serializable.

  On 13/12/10 22:19, yves wrote:

  Hi,

  I have a class defined in a way similar to this:

  class MyTypeT extends MyGen      extends Serializable {

        private ClassT      aClass;

        public MyType() {}

        public void setClass(ClassT      aClass) {
           this.aClass = aClass;
        }
  }

  where MyGen is also Serializable

  When I compile de project (I'am currently still using GWT 2.1.0 RC1),
  then I find the following :

  1) the compiler (using the compiler options -extra, -work and -gen)
  does not generate the code MyType_FieldSerializer.java as it does for
  all other serializable classes.

  2) In the extra / rpclog dir, the class MyType is flagged like this:
        Serialization status
           Not serializable

  3) And when I run my app, I get an InvocationException : the client
  is unable to make an RPC call with a parameter of type MyType.

  Is it a bug in the compiler, or did I missed something about ClassT
  serializability ?

  Thanks for your help
  Yves

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Re: ClassT is not serializable ?

[yves]

@Didier
Of course MyType implements Serializable . It is just a typo in the
example. Sorry.

@Paul
I didn't realized that Class is not GWT-serializable. Thanks for your
remark. I lost pretty much time to find out why I get an exception
during an RPC call

It would have been nice if ClassT was serializable. I would have
used it to select an appropriate handler at server-side. Anyway I use
instead the canonical class name to map the handler, but the code is
little bit more uggly :-)

I noticed also the a call to class.hashCode() does not give the same
value in the (gwt-compiled)-client and in the (JVM running)-server.
In my attempts to workaround the unserializability of Class, I tried
to use the hashCode() value, unsuccessfully...

Regards
Yves

On 14 déc, 10:42, Paul Robinson ukcue...@gmail.com wrote:
 Class is not gwt-serializable.

 MyType has a non-final, non-transient field of type Class

 Therefore MyType is not serializable

 On 14/12/10 09:33, Didier Durand wrote:

  Hi,

  Serializable is an interface not a class. That's why it's not the list
  you mention. An interface has nothing to be serialized per se.

  You should let us know about your class MyType in order to better
  help.

  regards

  didier

  On Dec 14, 9:21 am, Paul Robinsonukcue...@gmail.com  wrote:

  If you look at the Class.java that GWT uses to emulate the JVM's Class,
  you'll see that it does not implement Serializable.

  On 13/12/10 22:19, yves wrote:

  Hi,

  I have a class defined in a way similar to this:

  class MyTypeT extends MyGen    extends Serializable {

       private ClassT    aClass;

       public MyType() {}

       public void setClass(ClassT    aClass) {
          this.aClass = aClass;
       }
  }

  where MyGen is also Serializable

  When I compile de project (I'am currently still using GWT 2.1.0 RC1),
  then I find the following :

  1) the compiler (using the compiler options -extra, -work and -gen)
  does not generate the code MyType_FieldSerializer.java as it does for
  all other serializable classes.

  2) In the extra / rpclog dir, the class MyType is flagged like this:
       Serialization status
          Not serializable

  3) And when I run my app, I get an InvocationException : the client
  is unable to make an RPC call with a parameter of type MyType.

  Is it a bug in the compiler, or did I missed something about ClassT
  serializability ?

  Thanks for your help
  Yves

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Re: ClassT is not serializable ?

[yves]

Hi all, thanks for your comments and advices.

To solve my problem I'll do something like Didier said : I'll
instantiate an object of type T (which is Serializable), instead of
ClassT, and pass it to the server via the RPC.

class MyTypeT extends MyGen implements Serializable {

   T anObject;

   MyType() {} // mandatory no-arg contructor

   MyType(T anObject) { // with a non-null param value !
  this.anObject = anObject;
   }
}

Doing so, the server will receive a MyType object, will recognize the
type T of anObject and will be able to select the right handler.
And even the generics is not anymore required as the type of anObject
will be checked dynamically by the server.

Actually class.getCanonicalName() is not implemented too in GWT, so my
previous post is not realistic.

I personnaly prefer this solution than harcode the full className (as
it will change if I reorganize the packages...)

Regards
Yves



On 14 déc, 15:51, ep eplisc...@googlemail.com wrote:
 you dont need to, just put a fullyqualified classname on the wire and
 forName() it in the VM. you may also think about providing your custom
 field serializer for the class, but actually would be nonsense  since
 you anyway cannot use it reasonably on the client

 On 14 Dez., 12:20, yves yves.ko...@gmail.com wrote:

  @Didier
  Of course MyType implements Serializable . It is just a typo in the
  example. Sorry.

  @Paul
  I didn't realized that Class is not GWT-serializable. Thanks for your
  remark. I lost pretty much time to find out why I get an exception
  during an RPC call

  It would have been nice if ClassT was serializable. I would have
  used it to select an appropriate handler at server-side. Anyway I use
  instead the canonical class name to map the handler, but the code is
  little bit more uggly :-)

  I noticed also the a call to class.hashCode() does not give the same
  value in the (gwt-compiled)-client and in the (JVM running)-server.
  In my attempts to workaround the unserializability of Class, I tried
  to use the hashCode() value, unsuccessfully...

  Regards
  Yves

  On 14 déc, 10:42, Paul Robinson ukcue...@gmail.com wrote:

   Class is not gwt-serializable.

   MyType has a non-final, non-transient field of type Class

   Therefore MyType is not serializable

   On 14/12/10 09:33, Didier Durand wrote:

Hi,

Serializable is an interface not a class. That's why it's not the list
you mention. An interface has nothing to be serialized per se.

You should let us know about your class MyType in order to better
help.

regards

didier

On Dec 14, 9:21 am, Paul Robinsonukcue...@gmail.com  wrote:

If you look at the Class.java that GWT uses to emulate the JVM's Class,
you'll see that it does not implement Serializable.

On 13/12/10 22:19, yves wrote:

Hi,

I have a class defined in a way similar to this:

class MyTypeT extends MyGen    extends Serializable {

     private ClassT    aClass;

     public MyType() {}

     public void setClass(ClassT    aClass) {
        this.aClass = aClass;
     }
}

where MyGen is also Serializable

When I compile de project (I'am currently still using GWT 2.1.0 RC1),
then I find the following :

1) the compiler (using the compiler options -extra, -work and -gen)
does not generate the code MyType_FieldSerializer.java as it does for
all other serializable classes.

2) In the extra / rpclog dir, the class MyType is flagged like this:
     Serialization status
        Not serializable

3) And when I run my app, I get an InvocationException : the client
is unable to make an RPC call with a parameter of type MyType.

Is it a bug in the compiler, or did I missed something about ClassT
serializability ?

Thanks for your help
Yves

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[gwt-contrib] Re: Would GWT and/or incubator be interested in Run Time UiBinding

[yves]

May be this could be very interesting for some kind of applications.
Personaly I would be happy to have this kind of dynamic UI intergated
into GWT.

I have a question : what/how do you suggest to do in order to create
the link between the user interaction (e.g. click on a submit button)
to your code (e.g. to actually produce something) ?

GWT acquired GWTDesigner from Instantiations.com. But GWTDesigner (as
far as I remember when I used it almost 2 years ago) is not dynamic.
It allows only static prototyping. So GWTDesigner is not comparable to
what you created.

Here the added value, is the change one could provide to the UI on the
fly. Not usual in programming techniques !

Nice work.
Yves


On 14 nov, 03:00, TedM ted.malask...@gmail.com wrote:
 If it is helpful here is a video of me exampling how to use the demo.

 http://www.youtube.com/watch?v=wDzuS7pnYJE

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[gwt-contrib] Re: Internal compiler error with GWT 2.1.0 RC1 when using generics

[yves]

@Jeff
As you suggested me, I tried the followig without success (same OOME
problem):

public class ResultNodeT extends IResultNode implements IResultNode
and
public interface IResultNode extends Result

Again this is syntaxically correct and compiles sucessfully with
javac, BUT gives again the OOME problem with the GWT compiler.

So apprently the problem is NOT due to the self-referenced generics
ResulNodeT extends ResultNode?

@Miguel
As youl suggests in your link, is the problem the serialization of an
array of type T : T[] next; ?

As a workarround, I'll try to replace this array T[] by an
ArrayListT which serializes without know issue.
Yves


On 11 nov, 19:30, Miguel Méndez mmen...@google.com wrote:
 Thanks.  I was able to reproduce the problem and filed issue
 5582http://code.google.com/p/google-web-toolkit/issues/detail?id=5582
 .

 @zhuyi: can you take a look at this bug?

 On Thu, Nov 11, 2010 at 11:58 AM, yves yves.ko...@gmail.com wrote:
  Miguel,

  Here is the ResultNode class

  public class ResultNodeT extends ResultNode? implements Result {

         private static final long serialVersionUID = -3560238969723137110L;

         public int dataType;
         public int id1;
         public int id2;
         public int id3;
         public int id4;
         public int numChildren;
         public String data;
         public T[] next;

         public ResultNode() {}
  }

  and its parent, which is an empty placeholder for Serializable:

  public interface Result extends Serializable {

  }

  This class implements a node in a tree.
  The goal of the generics is to define the children nodes type (the
  next[] member).
  Actually ResultNode is not used by itself, only subtypes are
  instanciated. Subtypes of ResultNode define only additional int,
  boolean or float members. Nothing else.

  Even if the goal here is not to justify why I am doing this, this
  usage of the genrics allows me to remove from the code many unsafe
  type cast. Now with the generics I am sure of the member type
  (next[]). Isn't this the goal of generics ? :-)

  Yves

  On 11 nov, 17:34, Miguel Méndez mmen...@google.com wrote:
   @yves: What does the ResultNode class look like?  It is class
  ResultNodeT
   extends ResultNode? but what about its supertype and fields?

   On Thu, Nov 11, 2010 at 10:50 AM, yves yves.ko...@gmail.com wrote:
Chris,

JConsole does not succeed to connect to the java compilation : I get
an out of memory error in sun.rmi.transport.tcp.TCPTransport
$AcceptLoop.executeAcceptLoop while trying to start a new thread.
= Result: no data in jconsole

The compiler is the one shipped with GWT 2.1.0RC1

I'll send you the output of -verbose:gc
Yves

On 10 nov, 23:26, Chris Conroy con...@google.com wrote:
 Yves,

 You say this error did not occur before your most recent change. It
 would be useful to get an idea for the memory usage before this
 change: it could be that your app is just very large and you were
 already on the edge of an OOME, your change really necessitates more
 memory, or this is a pathological case.

 Here are a few things to try for gathering more useful information:

 -Try attaching jconsole to the compile in the before and after
 scenario and see how the memory usage compares between both.

 -add -XX:-HeapDumpOnOutOfMemoryError to the JVM args for your failing
 compile. There may be some interesting data in the resulting dump. If
 you can share the heap dump with us (you can send me a link off list
 if you like), then I can take a look.

 -Of course, make sure you are using the latest version of the GWT
 compiler. The 2.1 compiler contains some changes that will reduce the
 memory footprint of your compile.

 On Wed, Nov 10, 2010 at 1:20 PM, Scott Blum sco...@google.com
  wrote:
  Hmmm what happens if you turn down the log level, say to
  WARN?
  Are you invoking from the command line, or are you using the Google
Plugin
  for Eclipse?

  On Wed, Nov 10, 2010 at 4:16 PM, yves yves.ko...@gmail.com
  wrote:

  Scott,
  Thx for the tip. Anyway I can't allocate more than -Xmx1590M and I
  get
  exactly the same error.
  Yves

  On 9 nov, 07:47, Scott Blum sco...@google.com wrote:
   Hmm can you increase your virtual memory?

   On Mon, Nov 8, 2010 at 5:13 PM, yves yves.ko...@gmail.com
  wrote:
I can't, I only have 2GB RAM, I get this error as from
  -Xmx1024M
    [java] Error occurred during initialization of VM
    [java] Could not reserve enough space for object heap
    [java] Could not create the Java virtual machine.

and the log level is INFO
Yves

On 8 nov, 22:53, Scott Blum sco...@google.com wrote:
 What if you turn the heap up to -Xmx2048M?

 What log level are you using?

 On Mon, Nov 8, 2010 at 4:44 PM, yves yves.ko...@gmail.com
wrote

[gwt-contrib] Re: Internal compiler error with GWT 2.1.0 RC1 when using generics

[yves]

@All

I replaced the array T[] by a ListT and I still get the same OOME.

Summary :
1) when you break the self-referenced generics ResultNodeT extends
ResultNode? by
public class ResultNodeT extends IResultNode implements IResultNode
and
public interface IResultNode extends Result

= this still produces the error

2) when you replace the array T[] by a ListT
= still the same error

Thus my conclusion : the only way to avoid this error is to avoid the
usage of generics in a Serializable type (used in a RPC call)

HTH
Yves




On 12 nov, 16:21, Miguel Méndez mmen...@google.com wrote:
 [+zhuyi]



 On Fri, Nov 12, 2010 at 9:52 AM, Miguel Méndez mmen...@google.com wrote:
  On Fri, Nov 12, 2010 at 5:34 AM, yves yves.ko...@gmail.com wrote:

  @Jeff
  As you suggested me, I tried the followig without success (same OOME
  problem):

  public class ResultNodeT extends IResultNode implements IResultNode
  and
  public interface IResultNode extends Result

  Again this is syntaxically correct and compiles sucessfully with
  javac, BUT gives again the OOME problem with the GWT compiler.

  So apprently the problem is NOT due to the self-referenced generics
  ResulNodeT extends ResultNode?

  @Miguel
  As youl suggests in your link, is the problem the serialization of an
  array of type T : T[] next; ?

  As a workarround, I'll try to replace this array T[] by an
  ArrayListT which serializes without know issue.
  Yves

  I do suspect that T[] is the issue. �...@zhuyi: can you take a look at
 http://code.google.com/p/google-web-toolkit/issues/detail?id=5582and let
  me know what you think.

  --
  Miguel

 --
 Miguel

-- 
http://groups.google.com/group/Google-Web-Toolkit-Contributors

[gwt-contrib] Re: Internal compiler error with GWT 2.1.0 RC1 when using generics

[yves]

I've found a similar old problem : look at
http://code.google.com/p/google-web-toolkit/issues/detail?id=2279
Yves

On 12 nov, 19:52, yves yves.ko...@gmail.com wrote:
 @All

 I replaced the array T[] by a ListT and I still get the same OOME.

 Summary :
 1) when you break the self-referenced generics ResultNodeT extends
 ResultNode? by
 public class ResultNodeT extends IResultNode implements IResultNode
 and
 public interface IResultNode extends Result

 = this still produces the error

 2) when you replace the array T[] by a ListT
 = still the same error

 Thus my conclusion : the only way to avoid this error is to avoid the
 usage of generics in a Serializable type (used in a RPC call)

 HTH
 Yves

 On 12 nov, 16:21, Miguel Méndez mmen...@google.com wrote:

  [+zhuyi]

  On Fri, Nov 12, 2010 at 9:52 AM, Miguel Méndez mmen...@google.com wrote:
   On Fri, Nov 12, 2010 at 5:34 AM, yves yves.ko...@gmail.com wrote:

   @Jeff
   As you suggested me, I tried the followig without success (same OOME
   problem):

   public class ResultNodeT extends IResultNode implements IResultNode
   and
   public interface IResultNode extends Result

   Again this is syntaxically correct and compiles sucessfully with
   javac, BUT gives again the OOME problem with the GWT compiler.

   So apprently the problem is NOT due to the self-referenced generics
   ResulNodeT extends ResultNode?

   @Miguel
   As youl suggests in your link, is the problem the serialization of an
   array of type T : T[] next; ?

   As a workarround, I'll try to replace this array T[] by an
   ArrayListT which serializes without know issue.
   Yves

   I do suspect that T[] is the issue. �...@zhuyi: can you take a look at
  http://code.google.com/p/google-web-toolkit/issues/detail?id=5582andlet
   me know what you think.

   --
   Miguel

  --
  Miguel

-- 
http://groups.google.com/group/Google-Web-Toolkit-Contributors

[gwt-contrib] Re: Internal compiler error with GWT 2.1.0 RC1 when using generics

[yves]

Hi All,

@Scott
The WARN does not change anything to the result.
And to reduce the memory usage I already closed everything (Eclipse,
MySQL service, Tomcat, ...) and ran the compilation as a command line.
Naively I made a deep cleanup of my hard drive (defrag, optimization)
in order to allow a higher memory allocation. But it doesn't change
anything to my problem.

@Chris
I'll try and will come back soon with the results

@Jeff
I agree with you, this is certainly the problem. May be I should try
to debug the compiler...

Thanks for your advices :-)
Yves

On 11 nov, 04:04, Jeff Larsen larse...@gmail.com wrote:
 If I was a guessing man, I'd say you're gettting into an infinite loop
 with generics here and the SerializableTypeOracleBuilder.

 ResultNodeT extends ResultNode? The ? is probably what is causing
 this to break.

 I'm the serializer, I'm making a serialization policy for ResultNodeT
 extends ResultNode? since a valid value for ? is ResultNode it will
 continue to make serialization plolcity for an infinite number of
 ResultNodes

 ResultNodeT exends ResultNodeResultNodeT extends
 ResultNodeResultNodeT extends ResultNode.
 until the jvm runs out of heap. But that is just a guess without
 actually writing anything to test it, but it is a solid guess since
 SerializableTypeOracleBuilder is where the stack trace is blowing up.

 On Nov 10, 6:19 pm, Chris Conroy con...@google.com wrote:

  Actually, to get a more accurate picture than just looking at JConsole
  graphs, you could add -verbose:gc to the jvm flags and report back
  with the before and after logs that produces.

  On Wed, Nov 10, 2010 at 2:26 PM, Chris Conroy con...@google.com wrote:
   Yves,

   You say this error did not occur before your most recent change. It
   would be useful to get an idea for the memory usage before this
   change: it could be that your app is just very large and you were
   already on the edge of an OOME, your change really necessitates more
   memory, or this is a pathological case.

   Here are a few things to try for gathering more useful information:

   -Try attaching jconsole to the compile in the before and after
   scenario and see how the memory usage compares between both.

   -add -XX:-HeapDumpOnOutOfMemoryError to the JVM args for your failing
   compile. There may be some interesting data in the resulting dump. If
   you can share the heap dump with us (you can send me a link off list
   if you like), then I can take a look.

   -Of course, make sure you are using the latest version of the GWT
   compiler. The 2.1 compiler contains some changes that will reduce the
   memory footprint of your compile.

   On Wed, Nov 10, 2010 at 1:20 PM, Scott Blum sco...@google.com wrote:
   Hmmm what happens if you turn down the log level, say to WARN?
   Are you invoking from the command line, or are you using the Google 
   Plugin
   for Eclipse?

   On Wed, Nov 10, 2010 at 4:16 PM, yves yves.ko...@gmail.com wrote:

   Scott,
   Thx for the tip. Anyway I can't allocate more than -Xmx1590M and I get
   exactly the same error.
   Yves

   On 9 nov, 07:47, Scott Blum sco...@google.com wrote:
Hmm can you increase your virtual memory?

On Mon, Nov 8, 2010 at 5:13 PM, yves yves.ko...@gmail.com wrote:
 I can't, I only have 2GB RAM, I get this error as from -Xmx1024M
     [java] Error occurred during initialization of VM
     [java] Could not reserve enough space for object heap
     [java] Could not create the Java virtual machine.

 and the log level is INFO
 Yves

 On 8 nov, 22:53, Scott Blum sco...@google.com wrote:
  What if you turn the heap up to -Xmx2048M?

  What log level are you using?

  On Mon, Nov 8, 2010 at 4:44 PM, yves yves.ko...@gmail.com wrote:
   Hi,

   I had a class named ResultNode and the project compiled fine.
   In order to improve the code, I changed this class by adding
   generic
   stuff like that : ResultNodeT extends ResultNode?.
   Of course I adapted the entire project where needed to take
   advantage
   of this change.

   Now I get an Internal compiler error

   This is produced with java memory settings -Xmx768M and
   -Xss32M .
   (usually the settings are -Xmx128M and default value for -Xss 
   and
   I
   never had such problem).

   BTW : a javac compilation on the project is succesfull, so it 
   is
   not
   a java error.

   Any suggestion ? If more information is needed do not hesitate 
   to
   ask.
   Thanks in advance
   Yves

       [java] Compiling module com.mycompany.myproject.MyProject
       [java]    [ERROR] Errors in
   'file:/C:/java/workspace/MyProject/
   src/com/mycompany/myproject/client/model/AppActivityMapper.java'
       [java]       [ERROR]  Internal compiler error
       [java] java.lang.OutOfMemoryError: Java heap space
       [java

[gwt-contrib] Re: Internal compiler error with GWT 2.1.0 RC1 when using generics

[yves]

Chris,

JConsole does not succeed to connect to the java compilation : I get
an out of memory error in sun.rmi.transport.tcp.TCPTransport
$AcceptLoop.executeAcceptLoop while trying to start a new thread.
= Result: no data in jconsole

The compiler is the one shipped with GWT 2.1.0RC1

I'll send you the output of -verbose:gc
Yves

On 10 nov, 23:26, Chris Conroy con...@google.com wrote:
 Yves,

 You say this error did not occur before your most recent change. It
 would be useful to get an idea for the memory usage before this
 change: it could be that your app is just very large and you were
 already on the edge of an OOME, your change really necessitates more
 memory, or this is a pathological case.

 Here are a few things to try for gathering more useful information:

 -Try attaching jconsole to the compile in the before and after
 scenario and see how the memory usage compares between both.

 -add -XX:-HeapDumpOnOutOfMemoryError to the JVM args for your failing
 compile. There may be some interesting data in the resulting dump. If
 you can share the heap dump with us (you can send me a link off list
 if you like), then I can take a look.

 -Of course, make sure you are using the latest version of the GWT
 compiler. The 2.1 compiler contains some changes that will reduce the
 memory footprint of your compile.

 On Wed, Nov 10, 2010 at 1:20 PM, Scott Blum sco...@google.com wrote:
  Hmmm what happens if you turn down the log level, say to WARN?
  Are you invoking from the command line, or are you using the Google Plugin
  for Eclipse?

  On Wed, Nov 10, 2010 at 4:16 PM, yves yves.ko...@gmail.com wrote:

  Scott,
  Thx for the tip. Anyway I can't allocate more than -Xmx1590M and I get
  exactly the same error.
  Yves

  On 9 nov, 07:47, Scott Blum sco...@google.com wrote:
   Hmm can you increase your virtual memory?

   On Mon, Nov 8, 2010 at 5:13 PM, yves yves.ko...@gmail.com wrote:
I can't, I only have 2GB RAM, I get this error as from -Xmx1024M
    [java] Error occurred during initialization of VM
    [java] Could not reserve enough space for object heap
    [java] Could not create the Java virtual machine.

and the log level is INFO
Yves

On 8 nov, 22:53, Scott Blum sco...@google.com wrote:
 What if you turn the heap up to -Xmx2048M?

 What log level are you using?

 On Mon, Nov 8, 2010 at 4:44 PM, yves yves.ko...@gmail.com wrote:
  Hi,

  I had a class named ResultNode and the project compiled fine.
  In order to improve the code, I changed this class by adding
  generic
  stuff like that : ResultNodeT extends ResultNode?.
  Of course I adapted the entire project where needed to take
  advantage
  of this change.

  Now I get an Internal compiler error

  This is produced with java memory settings -Xmx768M and
  -Xss32M .
  (usually the settings are -Xmx128M and default value for -Xss and
  I
  never had such problem).

  BTW : a javac compilation on the project is succesfull, so it is
  not
  a java error.

  Any suggestion ? If more information is needed do not hesitate to
  ask.
  Thanks in advance
  Yves

      [java] Compiling module com.mycompany.myproject.MyProject
      [java]    [ERROR] Errors in
  'file:/C:/java/workspace/MyProject/
  src/com/mycompany/myproject/client/model/AppActivityMapper.java'
      [java]       [ERROR]  Internal compiler error
      [java] java.lang.OutOfMemoryError: Java heap space
      [java]     at java.util.Arrays.copyOf(Arrays.java:2882)
      [java]     at

java.lang.AbstractStringBuilder.expandCapacity(AbstractStringBuilder.java:
  100)
      [java]     at

  java.lang.AbstractStringBuilder.append(AbstractStringBuilder.java:390)
      [java]     at
java.lang.StringBuilder.append(StringBuilder.java:119)
      [java]     at

com.google.gwt.dev.util.log.PrintWriterTreeLogger.doBranch(PrintWriterTreeLogger.java:
  59)
      [java]     at

com.google.gwt.dev.util.log.AbstractTreeLogger.branch(AbstractTreeLogger.java:
  126)
      [java]     at
  com.google.gwt.core.ext.TreeLogger.branch(TreeLogger.java:222)
      [java]     at

com.google.gwt.user.rebind.rpc.SerializableTypeOracleBuilder.computeTypeInstantiability(SerializableTypeOracleBuilder.java:
  939)
      [java]     at

com.google.gwt.user.rebind.rpc.SerializableTypeOracleBuilder.checkTypeArgument(SerializableTypeOracleBuilder.java:
  1412)
      [java]     at

com.google.gwt.user.rebind.rpc.SerializableTypeOracleBuilder.checkSubtype(SerializableTypeOracleBuilder.java:
  1219)
      [java]     at

com.google.gwt.user.rebind.rpc.SerializableTypeOracleBuilder.checkSubtypes(SerializableTypeOracleBuilder.java:
  1309)
      [java]     at

com.google.gwt.user.rebind.rpc.SerializableTypeOracleBuilder.computeTypeInstantiability

[gwt-contrib] Re: Internal compiler error with GWT 2.1.0 RC1 when using generics

[yves]

Miguel,

Here is the ResultNode class

public class ResultNodeT extends ResultNode? implements Result {

private static final long serialVersionUID = -3560238969723137110L;

public int dataType;
public int id1;
public int id2;
public int id3;
public int id4;
public int numChildren;
public String data;
public T[] next;

public ResultNode() {}
}


and its parent, which is an empty placeholder for Serializable:

public interface Result extends Serializable {

}


This class implements a node in a tree.
The goal of the generics is to define the children nodes type (the
next[] member).
Actually ResultNode is not used by itself, only subtypes are
instanciated. Subtypes of ResultNode define only additional int,
boolean or float members. Nothing else.

Even if the goal here is not to justify why I am doing this, this
usage of the genrics allows me to remove from the code many unsafe
type cast. Now with the generics I am sure of the member type
(next[]). Isn't this the goal of generics ? :-)

Yves


On 11 nov, 17:34, Miguel Méndez mmen...@google.com wrote:
 @yves: What does the ResultNode class look like?  It is class ResultNodeT
 extends ResultNode? but what about its supertype and fields?

 On Thu, Nov 11, 2010 at 10:50 AM, yves yves.ko...@gmail.com wrote:
  Chris,

  JConsole does not succeed to connect to the java compilation : I get
  an out of memory error in sun.rmi.transport.tcp.TCPTransport
  $AcceptLoop.executeAcceptLoop while trying to start a new thread.
  = Result: no data in jconsole

  The compiler is the one shipped with GWT 2.1.0RC1

  I'll send you the output of -verbose:gc
  Yves

  On 10 nov, 23:26, Chris Conroy con...@google.com wrote:
   Yves,

   You say this error did not occur before your most recent change. It
   would be useful to get an idea for the memory usage before this
   change: it could be that your app is just very large and you were
   already on the edge of an OOME, your change really necessitates more
   memory, or this is a pathological case.

   Here are a few things to try for gathering more useful information:

   -Try attaching jconsole to the compile in the before and after
   scenario and see how the memory usage compares between both.

   -add -XX:-HeapDumpOnOutOfMemoryError to the JVM args for your failing
   compile. There may be some interesting data in the resulting dump. If
   you can share the heap dump with us (you can send me a link off list
   if you like), then I can take a look.

   -Of course, make sure you are using the latest version of the GWT
   compiler. The 2.1 compiler contains some changes that will reduce the
   memory footprint of your compile.

   On Wed, Nov 10, 2010 at 1:20 PM, Scott Blum sco...@google.com wrote:
Hmmm what happens if you turn down the log level, say to WARN?
Are you invoking from the command line, or are you using the Google
  Plugin
for Eclipse?

On Wed, Nov 10, 2010 at 4:16 PM, yves yves.ko...@gmail.com wrote:

Scott,
Thx for the tip. Anyway I can't allocate more than -Xmx1590M and I get
exactly the same error.
Yves

On 9 nov, 07:47, Scott Blum sco...@google.com wrote:
 Hmm can you increase your virtual memory?

 On Mon, Nov 8, 2010 at 5:13 PM, yves yves.ko...@gmail.com wrote:
  I can't, I only have 2GB RAM, I get this error as from -Xmx1024M
      [java] Error occurred during initialization of VM
      [java] Could not reserve enough space for object heap
      [java] Could not create the Java virtual machine.

  and the log level is INFO
  Yves

  On 8 nov, 22:53, Scott Blum sco...@google.com wrote:
   What if you turn the heap up to -Xmx2048M?

   What log level are you using?

   On Mon, Nov 8, 2010 at 4:44 PM, yves yves.ko...@gmail.com
  wrote:
Hi,

I had a class named ResultNode and the project compiled
  fine.
In order to improve the code, I changed this class by adding
generic
stuff like that : ResultNodeT extends ResultNode?.
Of course I adapted the entire project where needed to take
advantage
of this change.

Now I get an Internal compiler error

This is produced with java memory settings -Xmx768M and
-Xss32M .
(usually the settings are -Xmx128M and default value for -Xss
  and
I
never had such problem).

BTW : a javac compilation on the project is succesfull, so
  it is
not
a java error.

Any suggestion ? If more information is needed do not hesitate
  to
ask.
Thanks in advance
Yves

    [java] Compiling module com.mycompany.myproject.MyProject
    [java]    [ERROR] Errors in
'file:/C:/java/workspace/MyProject/

  src/com/mycompany/myproject/client/model/AppActivityMapper.java'
    [java]       [ERROR]  Internal compiler error
    [java

[gwt-contrib] Internal compiler error with GWT 2.1.0 RC1 when using generics

[yves]

Hi,

I had a class named ResultNode and the project compiled fine.
In order to improve the code, I changed this class by adding generic
stuff like that : ResultNodeT extends ResultNode?.
Of course I adapted the entire project where needed to take advantage
of this change.

Now I get an Internal compiler error

This is produced with java memory settings -Xmx768M and -Xss32M .
(usually the settings are -Xmx128M and default value for -Xss and I
never had such problem).

BTW : a javac compilation on the project is succesfull, so it is not
a java error.

Any suggestion ? If more information is needed do not hesitate to ask.
Thanks in advance
Yves

 [java] Compiling module com.mycompany.myproject.MyProject
 [java][ERROR] Errors in 'file:/C:/java/workspace/MyProject/
src/com/mycompany/myproject/client/model/AppActivityMapper.java'
 [java]   [ERROR]  Internal compiler error
 [java] java.lang.OutOfMemoryError: Java heap space
 [java] at java.util.Arrays.copyOf(Arrays.java:2882)
 [java] at
java.lang.AbstractStringBuilder.expandCapacity(AbstractStringBuilder.java:
100)
 [java] at
java.lang.AbstractStringBuilder.append(AbstractStringBuilder.java:390)
 [java] at java.lang.StringBuilder.append(StringBuilder.java:119)
 [java] at
com.google.gwt.dev.util.log.PrintWriterTreeLogger.doBranch(PrintWriterTreeLogger.java:
59)
 [java] at
com.google.gwt.dev.util.log.AbstractTreeLogger.branch(AbstractTreeLogger.java:
126)
 [java] at
com.google.gwt.core.ext.TreeLogger.branch(TreeLogger.java:222)
 [java] at
com.google.gwt.user.rebind.rpc.SerializableTypeOracleBuilder.computeTypeInstantiability(SerializableTypeOracleBuilder.java:
939)
 [java] at
com.google.gwt.user.rebind.rpc.SerializableTypeOracleBuilder.checkTypeArgument(SerializableTypeOracleBuilder.java:
1412)
 [java] at
com.google.gwt.user.rebind.rpc.SerializableTypeOracleBuilder.checkSubtype(SerializableTypeOracleBuilder.java:
1219)
 [java] at
com.google.gwt.user.rebind.rpc.SerializableTypeOracleBuilder.checkSubtypes(SerializableTypeOracleBuilder.java:
1309)
 [java] at
com.google.gwt.user.rebind.rpc.SerializableTypeOracleBuilder.computeTypeInstantiability(SerializableTypeOracleBuilder.java:
1011)
 [java] at
com.google.gwt.user.rebind.rpc.SerializableTypeOracleBuilder.checkArrayInstantiable(SerializableTypeOracleBuilder.java:
1107)
 [java] at
com.google.gwt.user.rebind.rpc.SerializableTypeOracleBuilder.computeTypeInstantiability(SerializableTypeOracleBuilder.java:
977)
 [java] at
com.google.gwt.user.rebind.rpc.SerializableTypeOracleBuilder.checkTypeArgument(SerializableTypeOracleBuilder.java:
1412)
 [java] at
com.google.gwt.user.rebind.rpc.SerializableTypeOracleBuilder.checkSubtype(SerializableTypeOracleBuilder.java:
1219)
 [java] at
com.google.gwt.user.rebind.rpc.SerializableTypeOracleBuilder.checkSubtypes(SerializableTypeOracleBuilder.java:
1309)
 [java] at
com.google.gwt.user.rebind.rpc.SerializableTypeOracleBuilder.computeTypeInstantiability(SerializableTypeOracleBuilder.java:
1011)
 [java] at
com.google.gwt.user.rebind.rpc.SerializableTypeOracleBuilder.checkArrayInstantiable(SerializableTypeOracleBuilder.java:
1107)
 [java] at
com.google.gwt.user.rebind.rpc.SerializableTypeOracleBuilder.computeTypeInstantiability(SerializableTypeOracleBuilder.java:
977)
 [java] at
com.google.gwt.user.rebind.rpc.SerializableTypeOracleBuilder.checkTypeArgument(SerializableTypeOracleBuilder.java:
1412)
 [java] at
com.google.gwt.user.rebind.rpc.SerializableTypeOracleBuilder.checkSubtype(SerializableTypeOracleBuilder.java:
1219)
 [java] at
com.google.gwt.user.rebind.rpc.SerializableTypeOracleBuilder.checkSubtypes(SerializableTypeOracleBuilder.java:
1309)
 [java] at
com.google.gwt.user.rebind.rpc.SerializableTypeOracleBuilder.computeTypeInstantiability(SerializableTypeOracleBuilder.java:
1011)
 [java] at
com.google.gwt.user.rebind.rpc.SerializableTypeOracleBuilder.checkArrayInstantiable(SerializableTypeOracleBuilder.java:
1107)
 [java] at
com.google.gwt.user.rebind.rpc.SerializableTypeOracleBuilder.computeTypeInstantiability(SerializableTypeOracleBuilder.java:
977)
 [java] at
com.google.gwt.user.rebind.rpc.SerializableTypeOracleBuilder.checkTypeArgument(SerializableTypeOracleBuilder.java:
1412)
 [java] at
com.google.gwt.user.rebind.rpc.SerializableTypeOracleBuilder.checkSubtype(SerializableTypeOracleBuilder.java:
1219)
 [java] at
com.google.gwt.user.rebind.rpc.SerializableTypeOracleBuilder.checkSubtypes(SerializableTypeOracleBuilder.java:
1309)
 [java] at
com.google.gwt.user.rebind.rpc.SerializableTypeOracleBuilder.computeTypeInstantiability(SerializableTypeOracleBuilder.java:
1011)
 [java] at
com.google.gwt.user.rebind.rpc.SerializableTypeOracleBuilder.checkArrayInstantiable(SerializableTypeOracleBuilder.java:
1107)
 [java

[gwt-contrib] Re: Internal compiler error with GWT 2.1.0 RC1 when using generics

[yves]

I can't, I only have 2GB RAM, I get this error as from -Xmx1024M
 [java] Error occurred during initialization of VM
 [java] Could not reserve enough space for object heap
 [java] Could not create the Java virtual machine.

and the log level is INFO
Yves


On 8 nov, 22:53, Scott Blum sco...@google.com wrote:
 What if you turn the heap up to -Xmx2048M?

 What log level are you using?

 On Mon, Nov 8, 2010 at 4:44 PM, yves yves.ko...@gmail.com wrote:
  Hi,

  I had a class named ResultNode and the project compiled fine.
  In order to improve the code, I changed this class by adding generic
  stuff like that : ResultNodeT extends ResultNode?.
  Of course I adapted the entire project where needed to take advantage
  of this change.

  Now I get an Internal compiler error

  This is produced with java memory settings -Xmx768M and -Xss32M .
  (usually the settings are -Xmx128M and default value for -Xss and I
  never had such problem).

  BTW : a javac compilation on the project is succesfull, so it is not
  a java error.

  Any suggestion ? If more information is needed do not hesitate to ask.
  Thanks in advance
  Yves

      [java] Compiling module com.mycompany.myproject.MyProject
      [java]    [ERROR] Errors in 'file:/C:/java/workspace/MyProject/
  src/com/mycompany/myproject/client/model/AppActivityMapper.java'
      [java]       [ERROR]  Internal compiler error
      [java] java.lang.OutOfMemoryError: Java heap space
      [java]     at java.util.Arrays.copyOf(Arrays.java:2882)
      [java]     at
  java.lang.AbstractStringBuilder.expandCapacity(AbstractStringBuilder.java:
  100)
      [java]     at
  java.lang.AbstractStringBuilder.append(AbstractStringBuilder.java:390)
      [java]     at java.lang.StringBuilder.append(StringBuilder.java:119)
      [java]     at

  com.google.gwt.dev.util.log.PrintWriterTreeLogger.doBranch(PrintWriterTreeLogger.java:
  59)
      [java]     at

  com.google.gwt.dev.util.log.AbstractTreeLogger.branch(AbstractTreeLogger.java:
  126)
      [java]     at
  com.google.gwt.core.ext.TreeLogger.branch(TreeLogger.java:222)
      [java]     at

  com.google.gwt.user.rebind.rpc.SerializableTypeOracleBuilder.computeTypeInstantiability(SerializableTypeOracleBuilder.java:
  939)
      [java]     at

  com.google.gwt.user.rebind.rpc.SerializableTypeOracleBuilder.checkTypeArgument(SerializableTypeOracleBuilder.java:
  1412)
      [java]     at

  com.google.gwt.user.rebind.rpc.SerializableTypeOracleBuilder.checkSubtype(SerializableTypeOracleBuilder.java:
  1219)
      [java]     at

  com.google.gwt.user.rebind.rpc.SerializableTypeOracleBuilder.checkSubtypes(SerializableTypeOracleBuilder.java:
  1309)
      [java]     at

  com.google.gwt.user.rebind.rpc.SerializableTypeOracleBuilder.computeTypeInstantiability(SerializableTypeOracleBuilder.java:
  1011)
      [java]     at

  com.google.gwt.user.rebind.rpc.SerializableTypeOracleBuilder.checkArrayInstantiable(SerializableTypeOracleBuilder.java:
  1107)
      [java]     at

  com.google.gwt.user.rebind.rpc.SerializableTypeOracleBuilder.computeTypeInstantiability(SerializableTypeOracleBuilder.java:
  977)
      [java]     at

  com.google.gwt.user.rebind.rpc.SerializableTypeOracleBuilder.checkTypeArgument(SerializableTypeOracleBuilder.java:
  1412)
      [java]     at

  com.google.gwt.user.rebind.rpc.SerializableTypeOracleBuilder.checkSubtype(SerializableTypeOracleBuilder.java:
  1219)
      [java]     at

  com.google.gwt.user.rebind.rpc.SerializableTypeOracleBuilder.checkSubtypes(SerializableTypeOracleBuilder.java:
  1309)
      [java]     at

  com.google.gwt.user.rebind.rpc.SerializableTypeOracleBuilder.computeTypeInstantiability(SerializableTypeOracleBuilder.java:
  1011)
      [java]     at

  com.google.gwt.user.rebind.rpc.SerializableTypeOracleBuilder.checkArrayInstantiable(SerializableTypeOracleBuilder.java:
  1107)
      [java]     at

  com.google.gwt.user.rebind.rpc.SerializableTypeOracleBuilder.computeTypeInstantiability(SerializableTypeOracleBuilder.java:
  977)
      [java]     at

  com.google.gwt.user.rebind.rpc.SerializableTypeOracleBuilder.checkTypeArgument(SerializableTypeOracleBuilder.java:
  1412)
      [java]     at

  com.google.gwt.user.rebind.rpc.SerializableTypeOracleBuilder.checkSubtype(SerializableTypeOracleBuilder.java:
  1219)
      [java]     at

  com.google.gwt.user.rebind.rpc.SerializableTypeOracleBuilder.checkSubtypes(SerializableTypeOracleBuilder.java:
  1309)
      [java]     at

  com.google.gwt.user.rebind.rpc.SerializableTypeOracleBuilder.computeTypeInstantiability(SerializableTypeOracleBuilder.java:
  1011)
      [java]     at

  com.google.gwt.user.rebind.rpc.SerializableTypeOracleBuilder.checkArrayInstantiable(SerializableTypeOracleBuilder.java:
  1107)
      [java]     at

  com.google.gwt.user.rebind.rpc.SerializableTypeOracleBuilder.computeTypeInstantiability(SerializableTypeOracleBuilder.java:
  977)
      [java

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

[Yves]

Yes! Just tried 2.1 with GWT Designer and its awesome with uibinder! I
aboslutely love GWT. Good job guys!


On Nov 2, 12:57 am, Yves yveshw...@gmail.com wrote:
 the recently released 2.1 would suffice? i vaguely recall that the GWT
 Designer that produces uibinder xml requires 2.1 m4 release? please do
 correct me if I am wrong.

 On Nov 1, 3:41 pm, Thomas Broyer t.bro...@gmail.com wrote:

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

   hi guys,

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

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

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

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

[Yves]

hi guys,


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

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

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

direction needed.


regards,

Yves

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

[Yves]

the recently released 2.1 would suffice? i vaguely recall that the GWT
Designer that produces uibinder xml requires 2.1 m4 release? please do
correct me if I am wrong.

On Nov 1, 3:41 pm, Thomas Broyer t.bro...@gmail.com wrote:
 On 1 nov, 15:25, Yves yveshw...@gmail.com wrote:

  hi guys,

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

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

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

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[gwt-contrib] CellTree keyProvider value not used in GWT 2.1.0 RC

[yves]

Hi,

While developping a CellTree I found that the function render() in
class CellTreeNodeView.NodeCellList calls render() of the Cell object
always with a null value for the key parameter (cell.render(value,
null, cellBuilder)).

Is it a bug or is it intended to be like that ?

It would be usefull to dispatch the key value
(=keyProvider.getKey(value)) to the cells in the CellTree. As far as I
understand the code examples  that might be the aim of this
parameter ? Anyway that would be very usefull for me :-)

Thanks for your comments
Yves

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[gwt-contrib] Re: CellTree keyProvider value not used in GWT 2.1.0 RC

[yves]

In the meantime I made the change in a local copy of the file
CellTreeNodeView.java and compiled it with my files.
= It works as expected.

The change I made is :
replace the line
cell.render(value, null, cellBuilder)
by
cell.render(value, key, cellBuilder)

HTH
Yves

On 31 oct, 18:01, yves yves.ko...@gmail.com wrote:
 Hi,

 While developping a CellTree I found that the function render() in
 class CellTreeNodeView.NodeCellList calls render() of the Cell object
 always with a null value for the key parameter (cell.render(value,
 null, cellBuilder)).

 Is it a bug or is it intended to be like that ?

 It would be usefull to dispatch the key value
 (=keyProvider.getKey(value)) to the cells in the CellTree. As far as I
 understand the code examples  that might be the aim of this
 parameter ? Anyway that would be very usefull for me :-)

 Thanks for your comments
 Yves

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Menu Item and MVP (2)

[yves]

Hi,

This message was supposed to be an answer to the Menu Item and MVP
discussion. But it does not appear, I probably made a mistake, so I
put it here in a new discussion.

The initial message posted by mic was :

 Just sharing some thoughts

 Would the MenuItem class need to implement HasClickHandler  so that
 when a MenuItem is clicked, the action can be handled in the
 presenter. At this time, the MenuItem needs an object that implements
 the Command interface, so the view seems to know about the presenter.

 I would like to know what others think about this.


This is probably a late answer to the initial question.
Anyway, I've made a quite simple implementation that solves the lack
of something like a HasClickHandlers dedicated to MenuItem.

Here I give you the solution I've built.


First, we need something like a HasCommandHandlers interface instead
of HasClickHandler. This will allow the presenter to handle a click on
a MenuItem.


public interface HasCommandHandlers extends HasHandlers {

// equivalent to the addClickHandler in the HasClickHandlers
interface
public HandlerRegistration addCommandHandler(CommandHandler handler);
}

We create a CommandHandler interface only to stay in line with the
naming convetion for the handlers.

public interface CommandHandler extends Command {
// this interface is empty
}

The Presenter :

public interface Display {
HasCommandHandlers getMenu1();
HasCommandHandlers getMenu2();
...
}

public void build() {

view.gerMenu1().addCommandHandler(new CommandHandler() {
public void execute() {
// do what you need
}
});
}

...
}

So this is standard MVP implementation.

Now the View.

We have to create a subclass of MenuItem implementing
MenuPresenter.HasCommandHandlers, so we will have a MenuItem
implementing the HasCommandHandlers interface just like a PushButton
implements HasClickHandlers.

public class MyMenuItem extends MenuItem implements
HasCommandHandlers {

// 
// extends MenuItem
// 

public MyMenuItem(String text) {
super(text, (Command)null);
}

// ---
// implements HasCommandHandlers
// ---

@Override
public HandlerRegistration addCommandHandler(CommandHandler 
handler)
{

// call MenuItem setCommand() as the CommandHandler is 
a Command !
setCommand(handler);

return new HandlerRegistration() {

@Override
public void removeHandler() {
// remove the command
MyMenuItem.this.setCommand(null);
}

};
}

@Override
public void fireEvent(GwtEvent? event) {
// do nothing because we do not receive events
}
}

The view as usual implements MenuPresenter.Display.

This seems to me a quite simple and straight solution.

Your comments are welcome !

HTH
Yves

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Re: how to use GIN ?

[yves]

Thank you for these explanations, I think I begin to understand GIN.
.. and I'll read the Guice tutorials :-)
(or may be :-( yet another tuto...)

Yves

PS to GIN team :
please make GIN simple to understand for those who don't know Guice
and are just trying to improve their client code.
I only came to GIN because it is used in some MVP explanations.



On 28 juin, 09:00, PhilBeaudoin philippe.beaud...@gmail.com wrote:
 Thomas gives very good advice, although I personally neverusethe
 @ImplementedBy annotation (not entirely sure why...).

 To complement his answer, if you're interested in saving the
 addClickHandler call you may want to take a look at UiBinder the
 @UiHandler annotation.

 On Jun 27, 3:41 pm, Thomas Broyer t.bro...@gmail.com wrote:

  On 27 juin, 19:39, yves yves.ko...@gmail.com wrote:

   Olivier,

   Thanks for the link.

   If I try to summarize my problem : Which are the conventions that are
   implicitly used byGINto bind classes ?

   I've already seen gwt-presenter, but it didn't helped me to understand
   how to transform my code to such code  :

   public class AppModule extends AbstractGinModule {

           @Override
           protected void configure() {

                   bind(EventBus.class).to(DefaultEventBus.class);

   bind(MainPresenter.Display.class).to(MainWidget.class);

   bind(MenuPresenter.Display.class).to(MenuWidget.class);

   bind(IssueEditPresenter.Display.class).to(IssueEditWidget.class);

   bind(IssueDisplayPresenter.Display.class).to(IssueDisplayWidget.class);

  If you control all of those classes, and they only exist as an
  interface+implementation class for testing purpose, then I'd rather
  annotate the interfaces with @ImplementedBy, e.g.
    �...@implementedby(MainWidget.class)
     public interface Display { ... }
  That way,GINwill automaticallyuseMainWidget as if you wrote the
  bind().to(); and in case you want to inject some other implementation
  (e.g. in some complex tests), you canusebind().to() without risking
  a duplicate binding.

   Is there any doc explaining what is behind the scene with all these
   bind().to() calls ?

   In my example, if I write something like

   bind(SearchPresenter.Display.class).to(someWidget.class);

   is it equivalent to

                   display = d;
                   display.getSearchButton().addClickHandler(new
   ClickHandler() {

                           @Override
                           public void onClick(ClickEvent event) {
                                   doSearch(event);
                           }

                   });

   and how to tellGINthat I need to call doSearch() ?

  No!GINis only about dependency injection, i.e. it saves you the
  new, and nothing else.
  With the above bind().to() and an @Inject annotation on the
  bind(Display) method, then whenGINis asked to instantiate a
  SearchPresenter (i.e. when you do not write the new yourself) it'll
  automatically instantiate a SomeWidget and call bind() with it as an
  argument (and when instantiating the SomeWidget, it'll automatically
  instantiate the required dependencies and inject them to @Inject-
  annotated constructor, fields and methods).

  Maybe you should look for Guice tutorials to better understand what
  dependency injection is, and how to configure it with Guice.

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how to use GIN ?

[yves]

Hi Everybody,

I've read the the official tutorial at 
http://code.google.com/p/google-gin/wiki/GinTutorial,
but I still doesn't understand how to use GIN (as it is mainly based
on Guice that I don't know)  and how it could help me :-( Sorry for
the tutorial writer :-)

I'm currently developping an MVP based app mainly inspired by the
google IO 2009 presentation
http://code.google.com/intl/fr/events/io/2009/sessions/GoogleWebToolkitBestPractices.html
and also the article 
http://code.google.com/intl/fr/webtoolkit/articles/mvp-architecture.html.

Here is an example of the code I would like to simplify using DI (as I
understand, GIN could do some part for me) :

public class SearchPresenter implements Presenter {

public interface Display {
HasClickHandlers getSearchButton();
}

Display display;

public void bind(Display d) {
display = d;
display.getSearchButton().addClickHandler(new ClickHandler() {

@Override
public void onClick(ClickEvent event) {
doSearch(event);
}

});
}


As I understand, perhaps I am wrong, GIN could do the bind() for me ?
But, how should I use GIN for that (if it is really suited for this) ?

Thanks for your help !
Yves

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Re: how to use GIN ?

[yves]

Olivier,

Thanks for the link.

If I try to summarize my problem : Which are the conventions that are
implicitly used by GIN to bind classes ?

I've already seen gwt-presenter, but it didn't helped me to understand
how to transform my code to such code  :

public class AppModule extends AbstractGinModule {

@Override
protected void configure() {

bind(EventBus.class).to(DefaultEventBus.class);

 
bind(MainPresenter.Display.class).to(MainWidget.class);

 
bind(MenuPresenter.Display.class).to(MenuWidget.class);

 
bind(IssueEditPresenter.Display.class).to(IssueEditWidget.class);

 
bind(IssueDisplayPresenter.Display.class).to(IssueDisplayWidget.class);

}

}

(found here
http://code.google.com/p/gwt-mvp-sample/source/browse/branches/gwt-presenter/src/com/enunes/bit/client/gin/AppModule.java)

Is there any doc explaining what is behind the scene with all these
bind().to() calls ?

In my example, if I write something like

 
bind(SearchPresenter.Display.class).to(someWidget.class);

is it equivalent to

display = d;
display.getSearchButton().addClickHandler(new
ClickHandler() {

@Override
public void onClick(ClickEvent event) {
doSearch(event);
}

});

and how to tell GIN that I need to call doSearch() ?

Thanks !

Yves

On 27 juin, 19:05, olivier nouguier olivier.nougu...@gmail.com
wrote:
 hi
  Google to gwt-presenter
 HIH



 On Sun, Jun 27, 2010 at 12:51 PM, yves yves.ko...@gmail.com wrote:
  Hi Everybody,

  I've read the the official tutorial at
 http://code.google.com/p/google-gin/wiki/GinTutorial,
  but I still doesn't understand how to use GIN (as it is mainly based
  on Guice that I don't know)  and how it could help me :-( Sorry for
  the tutorial writer :-)

  I'm currently developping an MVP based app mainly inspired by the
  google IO 2009 presentation

 http://code.google.com/intl/fr/events/io/2009/sessions/GoogleWebToolk...
  and also the article
 http://code.google.com/intl/fr/webtoolkit/articles/mvp-architecture.html.

  Here is an example of the code I would like to simplify using DI (as I
  understand, GIN could do some part for me) :

  public class SearchPresenter implements Presenter {

         public interface Display {
                 HasClickHandlers getSearchButton();
         }

         Display display;

         public void bind(Display d) {
                 display = d;
                 display.getSearchButton().addClickHandler(new ClickHandler()
  {

                        �...@override
                         public void onClick(ClickEvent event) {
                                 doSearch(event);
                         }

                 });
         }

  As I understand, perhaps I am wrong, GIN could do the bind() for me ?
  But, how should I use GIN for that (if it is really suited for this) ?

  Thanks for your help !
  Yves

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Re: can not set breakpoint (2)

[yves]

Kozura,

Thanks for your answer. I suddenly feel very stupid... :-)))
I was so confused by the terminlogy run in development mode that I
forget that debugging is performed obviously in the debug mode

Have a nice day
Yves

On 4 juin, 21:01, kozura koz...@gmail.com wrote:
 Maybe try Debug As instead of Run As, also make sure the ?
 gwt.codesvr=... parameter is in your browser's url

 On Jun 4, 12:45 pm, yves yves.ko...@gmail.com wrote:

  Hi Everybody,

  In GWT 2 Dev Mode, I can't make thebreakpointswork in eclipse :
  client app doesn't stop on any breakpoint.
  My config is: GWT 2.0.3, Eclipse 3.4.2 + GWT Plugin 1.3.2, JDK
  1.6.0_20. Firefox 3.6.3 (+ FF GWT Plugin)

  As I suspected something wrong in the structure of my project in
  eclipse, I tried with the GWT sample Hello.
  Thus, after running ant eclipse.generate on Hello,  I imported Hello
  into Eclipse.

  Here is an extract of the client code:

    public void onModuleLoad() {
      Button b = new Button(Click me, new ClickHandler() {
        public void onClick(ClickEvent event) {
          Window.alert(Hello, AJAX);
        }
      });

  I put 2breakpointson lines Button b = ... and Window.alert...

  I tried 2 ways to run the dev mode.
  First way: select the file Hello.launch and then Run (Ctrl+F11). This
  opens the GWT Development Mode shell.
  Second way: In Properties window check the option Use Google Web
  Toolkit, then select menu Run As Web Application. This opens the
  Development Mode eclipse tab.

  During both trials I could play with the application running into the
  browser, and thebreakpointsdidn't worked in eclipse.

  Does anybody could help me find what is wrong ?

  Thanks
  Yves

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can not set breakpoint (2)

[yves]

Hi Everybody,

In GWT 2 Dev Mode, I can't make the breakpoints work in eclipse :
client app doesn't stop on any breakpoint.
My config is: GWT 2.0.3, Eclipse 3.4.2 + GWT Plugin 1.3.2, JDK
1.6.0_20. Firefox 3.6.3 (+ FF GWT Plugin)

As I suspected something wrong in the structure of my project in
eclipse, I tried with the GWT sample Hello.
Thus, after running ant eclipse.generate on Hello,  I imported Hello
into Eclipse.

Here is an extract of the client code:

  public void onModuleLoad() {
Button b = new Button(Click me, new ClickHandler() {
  public void onClick(ClickEvent event) {
Window.alert(Hello, AJAX);
  }
});

I put 2 breakpoints on lines Button b = ... and Window.alert...

I tried 2 ways to run the dev mode.
First way: select the file Hello.launch and then Run (Ctrl+F11). This
opens the GWT Development Mode shell.
Second way: In Properties window check the option Use Google Web
Toolkit, then select menu Run As Web Application. This opens the
Development Mode eclipse tab.

During both trials I could play with the application running into the
browser, and the breakpoints didn't worked in eclipse.

Does anybody could help me find what is wrong ?

Thanks
Yves

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Problem with DevMode and GWT 2.0.3

[Yves]

Hi.

I was an happy user of GWT 1.6, using its HostedMode class to debug my
Java code.

I've installed GWT 2.0.3 and I can't debug anymore.

I've installed new Eclipse plugin, that should open a new eclipse view
called Web Application Debug View, but when I try to debug my
application, I don't see anything appear in this view, as I saw on
some tutorials.

Here's the way i launch my app:

com.google.gwt.dev.DevMode -noserver -logLevel ALL -startupUrl [myUrl]
[fully qualified module name]

I use tomcat 6 as external server.

So, when launching I get a window opening, telling me that it's OK,
app has been started, but when I open given URL (with
gwt.codesrv=127.0.0.1:9997), firefox doesn't ask me for a plugin
installation, and breakpoints don't work.

What could be the problem?

Thanks.

Yves.

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Re: error in javascript generated by GWT 2.0.3 for IE6 ?

[yves]

I found my problem :
Instead of
 set-property name=user.agent value=ie6 /
 set-property name=user.agent value=safari /

it should be
 set-property name=user.agent value=ie6,safari /

So there is no more problem, and no bug in the GWT compiler !

Yves

On 3 avr, 19:39, yves yves.ko...@gmail.com wrote:
 Hi Everybody,

 Unless I missed something (I just upgraded to 2.0.3 last week) I get
 the following error in IE6 (SP3) with the js script generated by GWT.

 Note that with Chrome (5.0.366.2 dev), I don't get this error !

 The browser gives this error : Object doesn't support this property
 or method at the line showed  below input.addEventListener

 As from version 1.6 or 1.7, EventListeners have been replaced by
 EventHandlers, this let me think that the error might be in the GWT
 compiler : I would expect a call to addEventHandler() method instead !

 The DETAILED complileStyle code is the following :

 function com_google_gwt_user_client_ui_impl_FocusImplStandard_
 $createFocusable__Lcom_google_gwt_user_client_ui_impl_FocusImplStandard_2Lc­om_google_gwt_user_client_Element_2(this
 $static){
   var div = $doc.createElement($intern_290);
   div.tabIndex = 0;
   var input = $doc.createElement($intern_456);
   input.type = $intern_411;
   input.tabIndex = -1;
   input.style.opacity = 0;
   input.style.height = $intern_457;
   input.style.width = $intern_457;
   input.style.zIndex = -1;
   input.style.overflow = $intern_293;
   input.style.position = $intern_34;
   input.addEventListener($intern_224, this
 $static.com_google_gwt_user_client_ui_impl_FocusImplStandard_focusHandler,
 false);
   div.appendChild(input);
   return div;

 }

 Here is an extract of my gwt.xml file:
         inherits name=com.google.gwt.user.User/
         set-property name=user.agent value=ie6 /
         set-property name=user.agent value=safari /

         inherits name=com.google.gwt.i18n.I18N/
         extend-property name=locale values=fr_BE/

 Does anybody have an idea if this is an error in GWT and / or what I
 should do to avoid this ?

 Thanks
 Yves

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error in javascript generated by GWT 2.0.3 for IE6 ?

[yves]

Hi Everybody,

Unless I missed something (I just upgraded to 2.0.3 last week) I get
the following error in IE6 (SP3) with the js script generated by GWT.

Note that with Chrome (5.0.366.2 dev), I don't get this error !

The browser gives this error : Object doesn't support this property
or method at the line showed  below input.addEventListener

As from version 1.6 or 1.7, EventListeners have been replaced by
EventHandlers, this let me think that the error might be in the GWT
compiler : I would expect a call to addEventHandler() method instead !

The DETAILED complileStyle code is the following :

function com_google_gwt_user_client_ui_impl_FocusImplStandard_
$createFocusable__Lcom_google_gwt_user_client_ui_impl_FocusImplStandard_2Lcom_google_gwt_user_client_Element_2(this
$static){
  var div = $doc.createElement($intern_290);
  div.tabIndex = 0;
  var input = $doc.createElement($intern_456);
  input.type = $intern_411;
  input.tabIndex = -1;
  input.style.opacity = 0;
  input.style.height = $intern_457;
  input.style.width = $intern_457;
  input.style.zIndex = -1;
  input.style.overflow = $intern_293;
  input.style.position = $intern_34;
  input.addEventListener($intern_224, this
$static.com_google_gwt_user_client_ui_impl_FocusImplStandard_focusHandler,
false);
  div.appendChild(input);
  return div;
}


Here is an extract of my gwt.xml file:
inherits name=com.google.gwt.user.User/
set-property name=user.agent value=ie6 /
set-property name=user.agent value=safari /

inherits name=com.google.gwt.i18n.I18N/
extend-property name=locale values=fr_BE/

Does anybody have an idea if this is an error in GWT and / or what I
should do to avoid this ?

Thanks
Yves

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Unable to see GWT.log messages

[yves]

I am using GWT 2.0.3 with Eclipse on W7

I installed the GWT development mode plugin in Chrome to have access
to development mode. I ma

I want so see my GWT.log messages in development mode

When I start my project and paste the URL ending with
gwt.codesrvr=127.0.0.1:9997 the application works okay, but I still
see no console window in Chrome holding my log messages. The
development mode console displays only the message module has been
loaded message.

I see that there is a server listening on port 9997, so perhaps it's
only about how to access the development mode.




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Unable to see GWT.log messages

[yves]

I am using GWT 2.0.3 with Eclipse on W7

I installed the GWT development mode plugin in Chrome to have access
to development mode. I ma

I want so see my GWT.log messages in development mode

When I start my project and paste the URL ending with
gwt.codesrvr=127.0.0.1:9997 the application works okay, but I still
see no console window in Chrome holding my log messages. The
development mode console displays only the message module has been
loaded message.

I see that there is a server listening on port 9997, so perhaps it's
only about how to access the development mode.




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I just realized that dependency injection is possible with GWT

[Yves]

Hello

Reading the documentation for the module xml files, i just realize
that the tag replace-with .../ allows for dependency injection.

Suppose i need to use different class implementation depending on my
environment (real class for production, mock for development ...). I
just have to have two (or more) module xml like this

For production use file FooProd.gwt.xml

module
  replace-with class=foo.FooProdImpl
when-type-is class=foo.Foo /
  /replace-with
  ...

For development use file FooDev.gwt.xml

module
  replace-with class=foo.FooMockImpl
when-type-is class=foo.Foo /
  /replace-with
  ...

Am i wrong?

Regards

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