GWT sound handling issue
My site is a pure GWT online training site. I record the training in mp3 style, so the cutomers can listen in my site. I use gwt-voice currently. But the issue is that gwt-voice does not support pause function. Many of my customers complains that they need the pause function. Is ther any solution here? -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To view this discussion on the web visit https://groups.google.com/d/msg/google-web-toolkit/-/0YimFVoLRd4J. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
Re: GWT sound handling issue
As per my knowledge, its better if you go with bst-player. http://code.google.com/p/bst-player/ Regards, Kiran On Wed, Mar 14, 2012 at 12:04 PM, Edwardxiong edward_xi...@yahoo.comwrote: My site is a pure GWT online training site. I record the training in mp3 style, so the cutomers can listen in my site. I use gwt-voice currently. But the issue is that gwt-voice does not support pause function. Many of my customers complains that they need the pause function. Is ther any solution here? -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To view this discussion on the web visit https://groups.google.com/d/msg/google-web-toolkit/-/0YimFVoLRd4J. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en. -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
Re: RichTextArea height size
The height of an html textarea is define by number of colonne, not the content of the area it self. So I think you cant not set it with 100%, try with pixel. Dodo www.html5bydemo.com On Mar 13, 1:17 pm, Saik0 v.h...@arcor.de wrote: Hi @all, why could i change the width of the RichTextArea with css but not the height? What i'm missing :-\ ? Source: RichTextArea area = new RichTextArea(); area.setSize(100%, 100%); -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
Re: URL fetch request size in googleaapengine
Hi Joe, There is nothing related to ASP in my code. I doing in Java. And 3.8Mb is Max limit to To POST from server to repositary If your file size 3.81Mb is gives you the same error. *Cannot access **http://URL* http://url/*: The request to API call urlfetch.Fetch() was too large. Can somebody explain me the reason for this.* On Tue, Mar 13, 2012 at 5:30 PM, Joseph Lust lifeofl...@gmail.com wrote: Learning, Seems that you're hitting a max file size of 4MB. (4e6 bytes / (4*1024*1024))*4 = 3.81, which is what you're getting, since somewhere along the line a MB is using 1e6 bytes, not 1048576 bytes. Are you accessing an ASP application? The default file export limit is 4MB there. Perhaps that is the sort of limit your are hitting, Sincerely, Joe -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To view this discussion on the web visit https://groups.google.com/d/msg/google-web-toolkit/-/GYQItAtKswMJ. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en. -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
Re: File download and Exception handling using a servlet.
Hi Appien Ho do you call the servlet ? http://www.html5bydemo.com/ -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To view this discussion on the web visit https://groups.google.com/d/msg/google-web-toolkit/-/WeXfqz5OpVgJ. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
Re: File download and Exception handling using a servlet.
Hi Bowie,
I use the code below. The PDF_HOST_URL variable is the url to my local
servlet. downloadFrame is a GWT Frame object.
pdfService.storeFormInSession(form, new AsyncCallbackEfPdfData() {
public void onSuccess(EfPdfData arg0) {
RootPanel.get().remove(downloadFrame);
downloadFrame.setUrl(PDF_HOST_URL);
downloadFrame.setVisible(false);
RootPanel.get().add(downloadFrame);
downloadFrame.addLoadHandler(new LoadHandler() {
public void onLoad(LoadEvent arg0) {
waitDialog.hide();
}
});
new ReadyStateWatch(downloadFrame, waitDialog).addReadyStateChangeHandler(
new ValueChangeHandlerReadyState() {
public void onValueChange(ValueChangeEventReadyState event) {
}
});
}
public void onFailure(Throwable exception) {
new EfDialog(exception.getMessage()).show();
waitDialog.hide();
}
});
On 14 March 2012 10:22, dodo dard keratonj...@gmail.com wrote:
Hi Appien
Ho do you call the servlet ?
http://www.html5bydemo.com/
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Re: Problem with Window.Location.assign(url)
We also encountered this problem with GWT 2.4. To complete previous
messages, we also noticed that it depends on the calling context. But when
the calling context is an event handler, all browsers don't have the same
behavior (we have the expected behavior on all browsers but IE any version).
It sounds like the problem comes from the fact that GWT code is in an
iframe and relative path resolution is done using the calling context
whereas we could expect GWT to resolve it in the main window context since
the fact that code is in a iframe is hidden to user.
Here is a GWT code snippet that shows the problem:
public class IERedirectBug
implements EntryPoint
{
@Override
public void onModuleLoad()
{
final Button redirectButton = new Button(Relative Redirection);
RootPanel.get().add(redirectButton);
redirectButton.addClickHandler(new ClickHandler()
{
@Override
public void onClick(ClickEvent event)
{
// Works with all browsers but IE
Location.assign(target.html);
}
});
}
}
To investigate the problem we did several test cases in pure Javascript.
In the first case, we use a frame that is in a subfolder and that contains
a function (as the GWT frame contains code) that does the main page
redirection (window.parent.location.assign()). If we call this code from
the main window (case #1), all browsers resolve correctly relative paths.
If this code is called from the iframe (next to the function declaration,
case #2), all browsers resolve the relative path according to the iframe
location and not the main page location. This shows that calling context
impacts relative path resolution and all browsers seem to have the same
behavior (at least Google Chrome and IE 8 9 on which we really tested).
Main window (test.html):
!DOCTYPE html
html
head/head
body
iframe src=folder/frame.html id=frame /iframe
h1main/h1
buttonredirect/button
/body
/html
Iframe (folder/frame.html):
!DOCTYPE html
html
head
/head
body
h1test2/h1
script type=text/javascript
function redirect()
{
window.parent.location.assign('target.html');
}
/script
/body
/html
In case #1, we add to the button declaration in test.html the call to the
redirect function: button
onclick=document.getElementById('frame').contentWindow.redirect()redirect/button.
This redirects to target.html on any browser, the expected behavior.
In case #2, we call the redirect function from the frame, just after its
declaration:
function redirect()
{
window.parent.location.assign('target.html');
}
redirect();
It redirects to folder/target.html on any browser.
These examples simply confirm that calling context impacts relative path
resolution but don't explain why IE hasn't the same behavior as other
browsers in our GWT case.
So we tried to reproduce in a pure Javascript example the way GWT handles
events (through the global handler), case #3. This way enabled us to
reproduce the problem. For modern browsers and IE9, the standard global
event handling system is used throw $wnd.addEventListener(). For IE 8 it's
a specific code (case #4). But whatever global event handling system is
used, Location.replace() and Location.assign() don't have the expected
behaviour with relative paths on IE.
In case #3, we use this code (just after redirect function declaration):
// Works on any browser but IE9
window.parent.addEventListener('click', function(e) { redirect(); }, true);
In case #4 (IE8), we use this code:
window.parent.document.body.attachEvent('onclick', function(e) {
redirect(); });
Cases #3 and #4 show that with global handler, IE has the same behavior as
case #2 while other browsers work as in case #1, which is the expected
behavior.
Even if the problem can be solved by API users using GWT.getModuleBaseURL(),
don't you think it sould be fixed in GWT itself since it doesn't respect
the GWT execution doesn't depend on browser principle?
I guess it could be solved by analyzing the parameter given to the assign()
method. If it starts neither with a protocol (http:// for instance) nor
with a slash, we can consider it's a relative path (unless I forget cases)
and thus prefix it with GWT.getModuleBaseUrl().
Le mercredi 16 juillet 2008 23:47:25 UTC+2, Thomas Broyer a écrit :
On Jul 16, 8:57 pm, jarrod jarrod.carl...@gmail.com wrote:
This is even stranger. Observe the following EntryPoint code:
public void onModuleLoad() {
RootPanel.get().add(new Button(Redirect, new ClickListener()
{
public void onClick(Widget sender) {
Window.Location.assign(index.html);
}
}));
RootPanel.get(root).add(root);
}
Click the button, and you get successfully redirected from /context/
module.html to /context/index.html, just like you would expect.
The onClick method is
Re: RichTextArea height size
Hi, thanks for your reply. You are right. I can't change the area itself. I've put the RichTextArea into a VerticalPanel and change the width and the height oft this panel. Now my RichTextArea looks fine ^^ greetings Am Mittwoch, 14. März 2012 09:46:19 UTC+1 schrieb dodo dard: The height of an html textarea is define by number of colonne, not the content of the area it self. So I think you cant not set it with 100%, try with pixel. Dodo www.html5bydemo.com On Mar 13, 1:17 pm, Saik0 v.h...@arcor.de wrote: Hi @all, why could i change the width of the RichTextArea with css but not the height? What i'm missing :-\ ? Source: RichTextArea area = new RichTextArea(); area.setSize(100%, 100%); -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To view this discussion on the web visit https://groups.google.com/d/msg/google-web-toolkit/-/uEHsdwKN65MJ. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
Re: RPC Serialization of an Interface..
Hi and thanks for your reply. i've investigated your suggestions and must say it's more complex as i thought. Some Interfaces go'es through the rpc serialization, others not. The problem is that i have some enum's in my sources and rpc don't accept them. I'm currently redesign my model and let you know if it works. ^^ greetings Am Dienstag, 13. März 2012 10:09:31 UTC+1 schrieb Alex Dobjanschi: try to use classes first, but you can definitely use interfaces. there are a couple of considerations: 1 interfaces must extend Serializable 2 those interfaces must be found by gwt rpc generator, so place them in one of the source imports of gwt module 3 implementations of these interfaces must also be visible to gwt rpc generator - that means, also be included in a visible package - along with the usual serialization requirements -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To view this discussion on the web visit https://groups.google.com/d/msg/google-web-toolkit/-/OH6neuFKUMEJ. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
Loading Plus-One-Button dynamically causes Popup to jump in height
Hi, I'm trying to add a Plus-One-Button dynamically to some popups our webapp is using. I'm using the following code: HTML google = new HTML(g:plusone size=\small\ annotation=\none\ href=\http://somecutomurl.com\;/g:plusone); Document doc = Document.get(); ScriptElement script = doc.createScriptElement(); script.setSrc(https://apis.google.com/js/plusone.js;); script.setType(text/javascript); script.setLang(javascript); doc.getBody().appendChild(script); DOM.setStyleAttribute(google.getElement(), margin, 0 5px 0 0); bottomLine.setCellHorizontalAlignment(google, HasHorizontalAlignment.ALIGN_RIGHT); bottomLine.setCellVerticalAlignment(google, HasVerticalAlignment.ALIGN_MIDDLE); bottomLine.add(google); Where bottomLine is a HorizontalPanel which is added to the Popup afterwards. Adding it to the popup directly doesnt help. The code itself works, the button is added, BUT the Popup enlarges its size for a very short second when the button is added and gets back to normal size afterwards. It kind of shrugs for a very short moment, which is very annoying. I tried setting a fixed height and max-height for the surrounding div. And I tried to use the css clip attribute. Both not working. Also I tried using AddThis-JS-Library to add the button, same effect. Does anyone has any idea how I can make this work? I'm sure it can be done, I saw apps doing exactly the same ... Thanks! noise -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To view this discussion on the web visit https://groups.google.com/d/msg/google-web-toolkit/-/MKC0AyG8v6wJ. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
Re: GWT add JARS
you can use an ant or maven to take care of this automatically. On Tuesday, March 13, 2012 9:06:51 PM UTC+1, Vincenz Mössenböck wrote: Hello, I'm a student at the HTL Wels and I'm trying to learn myself some GWT. I brought everything running, but there is still st what really annoyes me. I always have to copy all the jars like hibernate jars and postgresql jars to the Webinf .lib folder. Is there a way where I can add these jars to a server or st i just can t find where to put them. Can somebody pls help me? -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To view this discussion on the web visit https://groups.google.com/d/msg/google-web-toolkit/-/_YzYjMe7fBMJ. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
Re: JSNI and Flex Intercommunication Problem (through Javascript Interface)
A Google search returns Debug Desperado's github project (
https://github.com/debug-desperado/Cytoscape-Web-GWT-Wrapper ) as number
one hit :-p
On Tuesday, March 13, 2012 6:45:59 PM UTC+1, Deepan wrote:
Hi,
I am also trying to use Cytoscape web in GWT.
I was wondering if you successfully created the wrapper.
Any help on this topic will be greatly appreciated.
thanks.
Nik
On Sunday, June 5, 2011 1:04:43 AM UTC-4, Debug Desperado wrote:
Oops, forgot to report back just in case anyone else has this problem.
My solution was just to make sure that any array objects created by
GWT are done with new $wnd.Array(), as nino hinted. Weirdly there are
no type conversion errors with Function objects or normal javascript
Object.
On May 26, 6:34 pm, nino jazzmatad...@googlemail.com wrote:
Sorry i got back at you this late.
You allready spot the problem.
try doing somethinf like this
var network_json = new $wnd.Object();
network_json.data = {
data: {
nodes: [ { id: 1 }, { id: 2 } ],
edges: [ { id: 2to1, target: 1, source: 2 } ]
}
};
this.draw({network: network_json});
Regards,
Alain
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Re: GWT add JARS
Hello Vincenz, Yes you can put those jar into a server. Depends on what server that you use, for example if you using tomcat you can put it into 'common/lib' (depends on tomcat version). So look at your server specification. Dodo == www.html5bydemo.com Le mardi 13 mars 2012 21:06:51 UTC+1, Vincenz Mössenböck a écrit : Hello, I'm a student at the HTL Wels and I'm trying to learn myself some GWT. I brought everything running, but there is still st what really annoyes me. I always have to copy all the jars like hibernate jars and postgresql jars to the Webinf .lib folder. Is there a way where I can add these jars to a server or st i just can t find where to put them. Can somebody pls help me? -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To view this discussion on the web visit https://groups.google.com/d/msg/google-web-toolkit/-/rWO94PV0KKEJ. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
Re: JSNI and Flex Intercommunication Problem (through Javascript Interface)
Oh yeah I saw thatUnfortunatley when import that module in to GWT
project I am not able to get it working.
did u ???
-Nik
On Wednesday, March 14, 2012 9:27:19 AM UTC-4, Ümit Seren wrote:
A Google search returns Debug Desperado's github project (
https://github.com/debug-desperado/Cytoscape-Web-GWT-Wrapper ) as number
one hit :-p
On Tuesday, March 13, 2012 6:45:59 PM UTC+1, Deepan wrote:
Hi,
I am also trying to use Cytoscape web in GWT.
I was wondering if you successfully created the wrapper.
Any help on this topic will be greatly appreciated.
thanks.
Nik
On Sunday, June 5, 2011 1:04:43 AM UTC-4, Debug Desperado wrote:
Oops, forgot to report back just in case anyone else has this problem.
My solution was just to make sure that any array objects created by
GWT are done with new $wnd.Array(), as nino hinted. Weirdly there are
no type conversion errors with Function objects or normal javascript
Object.
On May 26, 6:34 pm, nino jazzmatad...@googlemail.com wrote:
Sorry i got back at you this late.
You allready spot the problem.
try doing somethinf like this
var network_json = new $wnd.Object();
network_json.data = {
data: {
nodes: [ { id: 1 }, { id: 2 } ],
edges: [ { id: 2to1, target: 1, source: 2 } ]
}
};
this.draw({network: network_json});
Regards,
Alain
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Accessing GAE UserService from GWT client through requestfactory
Hi,
I'm following the Expenses Sample that can be found in the SDK. I'm
writing a demo in which I would authenticate the user via GAE Users
Service.
I hit some problem in which the UserService userService =
UserServiceFactory.getUserService() is always null in the Service
Locator part of the Request Factory anyway here are my sample code.
This are my server side code.
package **.server;
import com.google.appengine.api.users.User;
import com.google.appengine.api.users.UserService;
import com.google.appengine.api.users.UserServiceFactory;
import com.google.web.bindery.requestfactory.shared.ServiceLocator;
/**
* Gives a RequestFactory system access to the Google AppEngine
UserService.
*/
public class UserServiceLocator implements ServiceLocator {
public UserServiceWrapper getInstance(Class? clazz) {
final UserService userService =
UserServiceFactory.getUserService();
return new UserServiceWrapper() {
public String createLoginURL(String destinationURL) {
String loginURL =
userService.createLoginURL(destinationURL);
return loginURL;
}
public String createLogoutURL(String destinationURL) {
String logoutURL =
userService.createLogoutURL(destinationURL);
return logoutURL;
}
public User getCurrentUser() {
User user = userService.getCurrentUser();
return user;
}
};
}
}
public interface UserServiceWrapper {
public String createLoginURL(String destinationURL);
public String createLogoutURL(String destinationURL);
public User getCurrentUser();
}
And here is my shared folder code
package **.shared;
import com.google.web.bindery.requestfactory.shared.ProxyForName;
import com.google.web.bindery.requestfactory.shared.ValueProxy;
/**
* Client visible proxy of Google AppEngine User class.
*/
@ProxyForName(com.google.appengine.api.users.User)
public interface GaeUserProxy extends ValueProxy {
String getNickname();
String getEmail();
}
import com.google.web.bindery.requestfactory.shared.RequestFactory;
public interface MercadoRequestFactory extends RequestFactory{
// UserEntityRequest userEntityRequest();
GaeUserServiceRequest userServiceRequest();
}
And here is how I instantiate it using GIN
package **.client.ioc
@Provides
@Singleton
public RequestFactory getRequestFactory(EventBus eventBus) {
RequestFactory requestFactory = GWT.create(RequestFactory
.class);
requestFactory.initialize(eventBus);
return requestFactory;
}
And here is how I use this in my client
package **.client.view
@Inject
RequestFactory requestFactory ;
@Override
public void setUser() {
gaeUserServiceRequest = requestFactory.userServiceRequest();
gaeUserServiceRequest.getCurrentUser().to(new
ReceiverGaeUserProxy() {
@Override
public void onSuccess(GaeUserProxy response) {
if(response == null) {
signingLink.setText(Sign In);
lblUserEmailAddress.setText(Guest);
createLoginURL();
} else {
signingLink.setText(Sign Out);
lblUserEmailAddress.setText(response.getNickname());
createLogoutURL();
}
}
});
gaeUserServiceRequest.fire();
}
The problem here is the GaeUserProxy response is always null. I trace
the problem and found out that the UserService userService =
UserServiceFactory.getUserService() in my server side
UserServiceLocator is always null. What seems to be the problem?
I'm using the GWT 2.4 BTW.
TIA
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RequestFactory, ServiceLocator and Spring
Hi,
I followed an example in this list on how to use a spring bean via
ServiceLocator. Everything works great using mvn gwt:debug but when I
try to package everything using mvn package I get compiler errors.
Here is my code:
import javax.servlet.http.HttpServletRequest;
import org.springframework.context.ApplicationContext;
import
org.springframework.web.context.support.WebApplicationContextUtils;
import
com.google.web.bindery.requestfactory.server.RequestFactoryServlet;
import com.google.web.bindery.requestfactory.shared.ServiceLocator;
public class EndpointConnectorServiceLocator implements ServiceLocator
{
/* (non-Javadoc)
* @see
com.google.web.bindery.requestfactory.shared.ServiceLocator#getInstance(java.lang.Class)
*/
@Override
public Object getInstance(Class? clazz) {
HttpServletRequest request =
RequestFactoryServlet.getThreadLocalRequest();
ApplicationContext context =
WebApplicationContextUtils.getWebApplicationContext(request.getSession().getServletContext());
return context.getBean(endpointConnectorService);
}
}
and the mvn message when hitting the error:
[INFO][ERROR] An internal compiler exception occurred
[INFO] com.google.gwt.dev.jjs.InternalCompilerException: Failed to get
JNode
[INFO] at com.google.gwt.dev.jjs.impl.TypeMap.get(TypeMap.java:140)
[INFO] at com.google.gwt.dev.jjs.impl.TypeMap.get(TypeMap.java:71)
[INFO] at
com.google.gwt.dev.jjs.impl.BuildTypeMap.getType(BuildTypeMap.java:
730)
[INFO] at com.google.gwt.dev.jjs.impl.BuildTypeMap.access
$000(BuildTypeMap.java:99)
[INFO] at com.google.gwt.dev.jjs.impl.BuildTypeMap
$BuildDeclMapVisitor.visit(BuildTypeMap.java:195)
[INFO] at
org.eclipse.jdt.internal.compiler.ast.LocalDeclaration.traverse(LocalDeclaration.java:
237)
[INFO] at
org.eclipse.jdt.internal.compiler.ast.MethodDeclaration.traverse(MethodDeclaration.java:
239)
[INFO] at
org.eclipse.jdt.internal.compiler.ast.TypeDeclaration.traverse(TypeDeclaration.java:
1239)
[INFO] at
org.eclipse.jdt.internal.compiler.ast.CompilationUnitDeclaration.traverse(CompilationUnitDeclaration.java:
687)
[INFO] at
com.google.gwt.dev.jjs.impl.BuildTypeMap.createPeersForNonTypeDecls(BuildTypeMap.java:
637)
[INFO] at
com.google.gwt.dev.jjs.impl.BuildTypeMap.exec(BuildTypeMap.java:514)
[INFO] at
com.google.gwt.dev.jjs.impl.BuildTypeMap.exec(BuildTypeMap.java:523)
[INFO] at
com.google.gwt.dev.jjs.JavaToJavaScriptCompiler.precompile(JavaToJavaScriptCompiler.java:
599)
[INFO] at
com.google.gwt.dev.jjs.JavaScriptCompiler.precompile(JavaScriptCompiler.java:
33)
[INFO] at com.google.gwt.dev.Precompile.precompile(Precompile.java:
284)
[INFO] at com.google.gwt.dev.Precompile.precompile(Precompile.java:
233)
[INFO] at com.google.gwt.dev.Precompile.precompile(Precompile.java:
145)
[INFO] at com.google.gwt.dev.Compiler.run(Compiler.java:232)
[INFO] at com.google.gwt.dev.Compiler.run(Compiler.java:198)
[INFO] at com.google.gwt.dev.Compiler$1.run(Compiler.java:170)
[INFO] at
com.google.gwt.dev.CompileTaskRunner.doRun(CompileTaskRunner.java:88)
[INFO] at
com.google.gwt.dev.CompileTaskRunner.runWithAppropriateLogger(CompileTaskRunner.java:
82)
[INFO] at com.google.gwt.dev.Compiler.main(Compiler.java:177)
[INFO] [ERROR] no source info: public interface
javax.servlet.http.HttpServletRequest
[INFO] extends java.lang.Object
[INFO] implements : Unresolved type javax.servlet.ServletRequest
[INFO] /* fields */
[INFO] public static final [unresolved] java.lang.String BASIC_AUTH
[INFO] public static final [unresolved] java.lang.String FORM_AUTH
[INFO] public static final [unresolved] java.lang.String
CLIENT_CERT_AUTH
[INFO] public static final [unresolved] java.lang.String DIGEST_AUTH
[INFO] /* methods */
[INFO] [unresolved] public abstract java.lang.String getAuthType()
[INFO] [unresolved] public abstract java.lang.String getContextPath()
[INFO] [unresolved] public abstract Unresolved type
javax.servlet.http.Cookie[] getCookies()
[INFO] [unresolved] public abstract long
getDateHeader(java.lang.String)
[INFO] [unresolved] public abstract java.lang.String
getHeader(java.lang.String)
[INFO] [unresolved] public abstract Enumeration#RAW getHeaderNames()
[INFO] [unresolved] public abstract Enumeration#RAW
getHeaders(java.lang.String)
[INFO] [unresolved] public abstract int
getIntHeader(java.lang.String)
[INFO] [unresolved] public abstract java.lang.String getMethod()
[INFO] [unresolved] public abstract java.lang.String getPathInfo()
[INFO] [unresolved] public abstract java.lang.String
getPathTranslated()
[INFO] [unresolved] public abstract java.lang.String getQueryString()
[INFO] [unresolved] public abstract java.lang.String getRemoteUser()
[INFO] [unresolved] public abstract java.lang.String getRequestURI()
[INFO] [unresolved] public abstract java.lang.StringBuffer
getRequestURL()
[INFO] [unresolved] public abstract java.lang.String
getRequestedSessionId()
[INFO] [unresolved]
Re: RequestFactory, ServiceLocator and Spring
never mind...
I moved my locator class from client package to server and therethere,
it worked.
sry for spam
On Wed, Mar 14, 2012 at 11:16 AM, kayser kayrox...@gmail.com wrote:
Hi,
I followed an example in this list on how to use a spring bean via
ServiceLocator. Everything works great using mvn gwt:debug but when I
try to package everything using mvn package I get compiler errors.
Here is my code:
import javax.servlet.http.HttpServletRequest;
import org.springframework.context.ApplicationContext;
import
org.springframework.web.context.support.WebApplicationContextUtils;
import
com.google.web.bindery.requestfactory.server.RequestFactoryServlet;
import com.google.web.bindery.requestfactory.shared.ServiceLocator;
public class EndpointConnectorServiceLocator implements ServiceLocator
{
/* (non-Javadoc)
* @see
com.google.web.bindery.requestfactory.shared.ServiceLocator#getInstance(java.lang.Class)
*/
@Override
public Object getInstance(Class? clazz) {
HttpServletRequest request =
RequestFactoryServlet.getThreadLocalRequest();
ApplicationContext context =
WebApplicationContextUtils.getWebApplicationContext(request.getSession().getServletContext());
return context.getBean(endpointConnectorService);
}
}
and the mvn message when hitting the error:
[INFO] [ERROR] An internal compiler exception occurred
[INFO] com.google.gwt.dev.jjs.InternalCompilerException: Failed to get
JNode
[INFO] at com.google.gwt.dev.jjs.impl.TypeMap.get(TypeMap.java:140)
[INFO] at com.google.gwt.dev.jjs.impl.TypeMap.get(TypeMap.java:71)
[INFO] at
com.google.gwt.dev.jjs.impl.BuildTypeMap.getType(BuildTypeMap.java:
730)
[INFO] at com.google.gwt.dev.jjs.impl.BuildTypeMap.access
$000(BuildTypeMap.java:99)
[INFO] at com.google.gwt.dev.jjs.impl.BuildTypeMap
$BuildDeclMapVisitor.visit(BuildTypeMap.java:195)
[INFO] at
org.eclipse.jdt.internal.compiler.ast.LocalDeclaration.traverse(LocalDeclaration.java:
237)
[INFO] at
org.eclipse.jdt.internal.compiler.ast.MethodDeclaration.traverse(MethodDeclaration.java:
239)
[INFO] at
org.eclipse.jdt.internal.compiler.ast.TypeDeclaration.traverse(TypeDeclaration.java:
1239)
[INFO] at
org.eclipse.jdt.internal.compiler.ast.CompilationUnitDeclaration.traverse(CompilationUnitDeclaration.java:
687)
[INFO] at
com.google.gwt.dev.jjs.impl.BuildTypeMap.createPeersForNonTypeDecls(BuildTypeMap.java:
637)
[INFO] at
com.google.gwt.dev.jjs.impl.BuildTypeMap.exec(BuildTypeMap.java:514)
[INFO] at
com.google.gwt.dev.jjs.impl.BuildTypeMap.exec(BuildTypeMap.java:523)
[INFO] at
com.google.gwt.dev.jjs.JavaToJavaScriptCompiler.precompile(JavaToJavaScriptCompiler.java:
599)
[INFO] at
com.google.gwt.dev.jjs.JavaScriptCompiler.precompile(JavaScriptCompiler.java:
33)
[INFO] at com.google.gwt.dev.Precompile.precompile(Precompile.java:
284)
[INFO] at com.google.gwt.dev.Precompile.precompile(Precompile.java:
233)
[INFO] at com.google.gwt.dev.Precompile.precompile(Precompile.java:
145)
[INFO] at com.google.gwt.dev.Compiler.run(Compiler.java:232)
[INFO] at com.google.gwt.dev.Compiler.run(Compiler.java:198)
[INFO] at com.google.gwt.dev.Compiler$1.run(Compiler.java:170)
[INFO] at
com.google.gwt.dev.CompileTaskRunner.doRun(CompileTaskRunner.java:88)
[INFO] at
com.google.gwt.dev.CompileTaskRunner.runWithAppropriateLogger(CompileTaskRunner.java:
82)
[INFO] at com.google.gwt.dev.Compiler.main(Compiler.java:177)
[INFO] [ERROR] no source info: public interface
javax.servlet.http.HttpServletRequest
[INFO] extends java.lang.Object
[INFO] implements : Unresolved type javax.servlet.ServletRequest
[INFO] /* fields */
[INFO] public static final [unresolved] java.lang.String BASIC_AUTH
[INFO] public static final [unresolved] java.lang.String FORM_AUTH
[INFO] public static final [unresolved] java.lang.String
CLIENT_CERT_AUTH
[INFO] public static final [unresolved] java.lang.String DIGEST_AUTH
[INFO] /* methods */
[INFO] [unresolved] public abstract java.lang.String getAuthType()
[INFO] [unresolved] public abstract java.lang.String getContextPath()
[INFO] [unresolved] public abstract Unresolved type
javax.servlet.http.Cookie[] getCookies()
[INFO] [unresolved] public abstract long
getDateHeader(java.lang.String)
[INFO] [unresolved] public abstract java.lang.String
getHeader(java.lang.String)
[INFO] [unresolved] public abstract Enumeration#RAW getHeaderNames()
[INFO] [unresolved] public abstract Enumeration#RAW
getHeaders(java.lang.String)
[INFO] [unresolved] public abstract int
getIntHeader(java.lang.String)
[INFO] [unresolved] public abstract java.lang.String getMethod()
[INFO] [unresolved] public abstract java.lang.String getPathInfo()
[INFO] [unresolved] public abstract java.lang.String
getPathTranslated()
[INFO] [unresolved] public abstract java.lang.String getQueryString()
[INFO] [unresolved] public
Passing multiple params to my Presenter
In my MainPagePresenter I have 2 fields that I would like to pass to my response presenter, however, I am not sure how to play with the .with. Please help. placeManager.revealPlace(new PlaceRequest(NameTokens.response).with( ResponsePresenter.usernameParam, username)); Thanks, lwt -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
GWT compatible serialization techniques
Hi, I understand that GWT (2.4) implements serialization through isSerializable and Serializable. I was wondering if any third party packages could be used that advertise faster Java serialization? -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To view this discussion on the web visit https://groups.google.com/d/msg/google-web-toolkit/-/EZre_2YcBi8J. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
gwt,mysql and hibernate.
i am new to gwt and hibernate.. and i am doing a project with gwt,mysql and hibernate please help me with some example project.. -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
Meetup in Helsinki?
I'll be in Helsinki Sat-Mon, if anybody wants to catch up over a beer or whatever it is you northerners consume that'd be great. -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
Re: File download and Exception handling using a servlet.
Hi Albert,
The way I did this is by reading SubmitCompleteEvent.getResults(), i.e.
uploadForm.addSubmitCompleteHandler(new SubmitCompleteHandler() {
public void onSubmitComplete(SubmitCompleteEvent event) {
if (event.getResults().contains(SizeException)
Window.alert(Data entry over limit);
}
}
You would just have to make sure that the servlet which handles the upload
generates some meaningful, machine readable output which you can parse on
the client
On Monday, March 12, 2012 12:19:29 PM UTC+2, Appien wrote:
Hi guys,
In my GWT application the user can download a PDF file by using a servlet.
To start the download I create in GWT a hidden Frame Object which calls the
servlet. The happy workflow path works great however I want give the user
some feedback when generating the PDF file fails. Since the result of the
servlet call gets ‘printed’ in the Frame object, the printed exception also
appears in the hidden Frame and not e.g. by a popup for the user.
Unfortunately I don’t see a way so the servlet throws directly exceptions
to the AsyncCallback of GWT.
I’ve the following pseudo code for handling my exception.
My questions are the following:
- Is this the right way to do exception handling for servlet exceptions
in GWT?
- If not, which approach should I use for this?
Many thanks for all the help!
Albert
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Re: GWT and Google Maps Version 3
Hi, I find that most demos don't seem to work on IE9. On Feb 14, 7:30 pm, Joseph Lust lifeofl...@gmail.com wrote: The lack of deprecated V3 is maddening for GWT and Maps V3. Check out the below. It is the only one I know of. There is a nearly finalized V3 API on googlecodehttp://code.google.com/p/gwt-maps-api/ . It has every facet of the JS API and is fully functional right now. I'm using it without issue. Feel free to check it out of SVN and build it. Joe On Feb 14, 5:20 am, andrew andrew.macken...@bcntouch.com wrote: I currently use GWT Maps API 1.1 in our GWT APP and I'd like to update it to use the Google Maps API Version 3. Is there a supported, not deprecated, library for GWT to use Google Maps API V3? gwt-google-maps-v3 ===http://code.google.com/p/gwt-google-maps-v3/ Only one committer. Seems abandoned. Latest downloadable JAR is from May 2010. Not compiled for GWT 2.2 and so fails on latest GWT2.4 (someone posted a new version) Says This project will soon be merged into gwt-google-apis and hence is depricated, but that comment could be pretty old by now. gwt-google-apis ===http://code.google.com/p/gwt-google-apis/ Would seem to be the official and logical place to look. But it states: At the present time, the gwt-maps API only supports Google Maps API version 2. and the Libraries for GWT versions 1.0 and 1.1 (uses GMaps API V2) are both listed as deprecated. Release Notes (1.10) was last updated on May 2010. I was convinded this would be the place to find it, and searched but with no luck. Am I missing something? I also found: gwt-maps3 http://code.google.com/p/gwt-maps3/ This seems more up-to-date than gwt-google-maps-v3 and, but less extensive and not Google approved? If I'm going to rewrite for a new API, I'd like it to be the definitive, if possible Google sanctioned one, and not face another re-write shortly after. Thanks for any help. -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
Re: GWT and Google Maps Version 3
Hi, I find that most demos don't seem to work on IE9. On Feb 14, 7:30 pm, Joseph Lust lifeofl...@gmail.com wrote: The lack of deprecated V3 is maddening for GWT and Maps V3. Check out the below. It is the only one I know of. There is a nearly finalized V3 API on googlecodehttp://code.google.com/p/gwt-maps-api/ . It has every facet of the JS API and is fully functional right now. I'm using it without issue. Feel free to check it out of SVN and build it. Joe On Feb 14, 5:20 am, andrew andrew.macken...@bcntouch.com wrote: I currently use GWT Maps API 1.1 in our GWT APP and I'd like to update it to use the Google Maps API Version 3. Is there a supported, not deprecated, library for GWT to use Google Maps API V3? gwt-google-maps-v3 ===http://code.google.com/p/gwt-google-maps-v3/ Only one committer. Seems abandoned. Latest downloadable JAR is from May 2010. Not compiled for GWT 2.2 and so fails on latest GWT2.4 (someone posted a new version) Says This project will soon be merged into gwt-google-apis and hence is depricated, but that comment could be pretty old by now. gwt-google-apis ===http://code.google.com/p/gwt-google-apis/ Would seem to be the official and logical place to look. But it states: At the present time, the gwt-maps API only supports Google Maps API version 2. and the Libraries for GWT versions 1.0 and 1.1 (uses GMaps API V2) are both listed as deprecated. Release Notes (1.10) was last updated on May 2010. I was convinded this would be the place to find it, and searched but with no luck. Am I missing something? I also found: gwt-maps3 http://code.google.com/p/gwt-maps3/ This seems more up-to-date than gwt-google-maps-v3 and, but less extensive and not Google approved? If I'm going to rewrite for a new API, I'd like it to be the definitive, if possible Google sanctioned one, and not face another re-write shortly after. Thanks for any help. -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
Re: how to link with page in gwt without update history stack?
I don't know if we can do that, because when one click on a link, browser native implementation is to update history stack. It doesn't go through GWT. www.html5bydemo.com Le mardi 13 mars 2012 22:29:14 UTC+1, mars a écrit : hi, my gwt page has link within itself, like normal html page a href=#bB/a point to a name=b/a h3B/h3 within the same page, but i don't want to update the history stack by appending '#b' to the end of url. how can i do that? I used anchor instead of hyperlink. thanks. -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To view this discussion on the web visit https://groups.google.com/d/msg/google-web-toolkit/-/ouIoz4Eh84AJ. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
Re: how to link with page in gwt without update history stack?
I think its only possible if you do the scrolling yourself and do not rely
on the a name=... tag.
You can probably do something like (untested):
anchor.addClickHandler(new ClickHandler() {
public void onClick(ClickEvent event) {
Widget jumpTo = getWidgetYouWantToScrollTo();
jumpTo.getElement().scrollIntoView(); //Version 1
scrollPanel.setVerticalScrollPosition(jumpTo.getElement().getOffsetTop());
//Version 2
Window.scrollTo(0, jumpTo.getElement().getOffsetTop()); //Version 3
}
});
-- J.
Am Dienstag, 13. März 2012 22:29:14 UTC+1 schrieb mars:
hi,
my gwt page has link within itself, like normal html page
a href=#bB/a
point to
a name=b/a
h3B/h3
within the same page, but i don't want to update the
history stack by appending '#b' to the end of url. how can
i do that? I used anchor instead of hyperlink.
thanks.
--
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Performance GWT-RPC, JavaScript Overlays, RequestFactory etc.
Hello everyone, I have been looking around for a really long time now on these client- server communication strategies and have had a difficult time choosing the right approach for my application. It also doesn't help that I don't have a very strong background on server sided coding :P In any case, I am trying to find the approach that would give the best performance on the client-side. I know that GWT-RPC uses it's own protocol to get you to the server side. It is built on top of RequestBuilder and converts your data into a content-type of (what I read was) text/plain. From here, it will reconstruct your java object onto the servlet. JavaScript Overlays says that it has no overhead. RequestFactory is supposed to be even faster than GWT-RPC. No serialization is required, but apparently deserialization is. Upon these, there is the old RequestBuilder with a JSONParser. I want to minimize the amount of time it takes for the client to deserialize it's data with a balance of data size. My objects aren't too deep. At most, an object would contain a couple of strings, and two arraylists of 100 objects than contain a couple of other strings. But if I can avoid the deserialization part (where I believe most of the response time is being consumed by) by a simple eval on a JSON or something, that would be great. Other notes: I have flexibility in what server I can use. However, eventually I would like to make web services for non-gwt platforms, though I feel like I could reuse the same business logic and use a different entry point to the service. QUESTIONS: 1. What does it mean for JavaScript Overlays to have no overhead? 2. Which one would you say is fastest in terms of client side performance? 3. What does it mean that JavaScriptObjects are Opaque? 4. Since JavaScript Overlays describe us extending JavaScriptObjects, does that mean converting it to a JSON requires less (or even zero) time than would GWT-RPC? Thank you so much for your input~ -- You received this message because you are subscribed to the Google Groups Google Web Toolkit group. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
Re: Performance GWT-RPC, JavaScript Overlays, RequestFactory etc.
On Wednesday, March 14, 2012 4:35:27 PM UTC+1, Elizabeth Lemon wrote: Hello everyone, I have been looking around for a really long time now on these client- server communication strategies and have had a difficult time choosing the right approach for my application. It also doesn't help that I don't have a very strong background on server sided coding :P In any case, I am trying to find the approach that would give the best performance on the client-side. I know that GWT-RPC uses it's own protocol to get you to the server side. It is built on top of RequestBuilder and converts your data into a content-type of (what I read was) text/plain. From here, it will reconstruct your java object onto the servlet. JavaScript Overlays says that it has no overhead. RequestFactory is supposed to be even faster than GWT-RPC. No serialization is required, but apparently deserialization is. Upon these, there is the old RequestBuilder with a JSONParser. I want to minimize the amount of time it takes for the client to deserialize it's data with a balance of data size. My objects aren't too deep. At most, an object would contain a couple of strings, and two arraylists of 100 objects than contain a couple of other strings. But if I can avoid the deserialization part (where I believe most of the response time is being consumed by) by a simple eval on a JSON or something, that would be great. Other notes: I have flexibility in what server I can use. However, eventually I would like to make web services for non-gwt platforms, though I feel like I could reuse the same business logic and use a different entry point to the service. QUESTIONS: 1. What does it mean for JavaScript Overlays to have no overhead? JSOs are a way of coding in Java against JavaScript objects. The JSO class is a shim that get totally compiled out: no overhead, no wrapping of the JS object. 2. Which one would you say is fastest in terms of client side performance? Most probably JSOs, with JsonUtils for parsing. Next I'd say AutoBeans, then RF, then RPC. Note that server side performance is different: the rpc protocol is much simpler than RF, so it's faster. 3. What does it mean that JavaScriptObjects are Opaque? Where did you read that?! 4. Since JavaScript Overlays describe us extending JavaScriptObjects, does that mean converting it to a JSON requires less (or even zero) time than would GWT-RPC? Yes. Most browsers can do JSON.stringify(), for others you'd have to use JSONObject.toString(), which has a small overhead. Thank you so much for your input~ Choose what works best for you (in terms of protocol), not necessarily the fastest. These won't be the bottleneck of your app's performance, DOM is much more of an issue (and of course the network and the server) On Wednesday, March 14, 2012 4:35:27 PM UTC+1, Elizabeth Lemon wrote: Hello everyone, I have been looking around for a really long time now on these client- server communication strategies and have had a difficult time choosing the right approach for my application. It also doesn't help that I don't have a very strong background on server sided coding :P In any case, I am trying to find the approach that would give the best performance on the client-side. I know that GWT-RPC uses it's own protocol to get you to the server side. It is built on top of RequestBuilder and converts your data into a content-type of (what I read was) text/plain. From here, it will reconstruct your java object onto the servlet. JavaScript Overlays says that it has no overhead. RequestFactory is supposed to be even faster than GWT-RPC. No serialization is required, but apparently deserialization is. Upon these, there is the old RequestBuilder with a JSONParser. I want to minimize the amount of time it takes for the client to deserialize it's data with a balance of data size. My objects aren't too deep. At most, an object would contain a couple of strings, and two arraylists of 100 objects than contain a couple of other strings. But if I can avoid the deserialization part (where I believe most of the response time is being consumed by) by a simple eval on a JSON or something, that would be great. Other notes: I have flexibility in what server I can use. However, eventually I would like to make web services for non-gwt platforms, though I feel like I could reuse the same business logic and use a different entry point to the service. QUESTIONS: 1. What does it mean for JavaScript Overlays to have no overhead? 2. Which one would you say is fastest in terms of client side performance? 3. What does it mean that JavaScriptObjects are Opaque? 4. Since JavaScript Overlays describe us extending JavaScriptObjects, does that mean converting it to a JSON requires less (or even zero) time than would GWT-RPC? Thank you so much for your input~ -- You received this message because you are subscribed to
Requestfactory and CellBrowser Context Problem
Hello,
I'm trying to use gwt CellBrowser and RequestFactory to show some
stored data as Cells in the cellbrowser. But I can't do it because of
the context of requestfactory.
Any Ideas ?
class CustomTreeModel implements TreeViewModel {
{
...
..
...
ListComposerProxy composerproxy = new ArrayListComposerProxy();
private void setComposer() {
testRequestFactory = GWT.create(TestRequestFactory.class);
testRequestFactory.initialize(new SimpleEventBus());
request.getQuery(select a from Composer a).fire(
new ReceiverListComposerProxy() {
@Override
public void
onSuccess(ListComposerProxy arg0) {
//Here Is my problem, How
can I transfer the value of arg0 to composerproxy in order to use it
on my CellBrowser ()
// Tried with a for() to
insert each ComposerProxy individually and with a separate method
insertcomposerproxy(arg0) but didnt work
composerproxy=arg0;
}
});
}
}
public T NodeInfo? getNodeInfo(T value) {
if (value == null) {
setComposer();
// LEVEL 0.
// We passed null as the root value. Return the
composers.
// Create a data provider that contains the list of
composers.
//HERE IS MY PROBLEM. The composerproxy
variable is empty.
ListDataProviderComposerProxy dataProvider = new
ListDataProviderComposerProxy(
composerproxy);
// Create a cell to display a composer.
CellComposerProxy cell = new
AbstractCellComposerProxy() {
@Override
public void render(Context context,
ComposerProxy value,
SafeHtmlBuilder sb) {
if (value != null) {
sb.appendEscaped(value.getName());
}
}
};
// Return a node info that pairs the data provider and
the cell.
return new DefaultNodeInfoComposerProxy(dataProvider,
cell);
}
..
.
.
.
}
PD: The getQuery() function works fine and the arg0 variable has data.
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http://groups.google.com/group/google-web-toolkit?hl=en.
Re: Performance GWT-RPC, JavaScript Overlays, RequestFactory etc.
Thanks so much for replying! I read that JavaScriptObjects are an opaque handle in the javadoc http://google-web-toolkit.googlecode.com/svn/javadoc/1.6/com/google/gwt/core/client/JavaScriptObject.html When you mentioned how server side performance is different, is it because of the protocol used to marshall and unmarshall the data once it arrives on the server? You mentioned that the DOM is much more of an issue? In what sense? And how does one go about optimizing for this? I always believed that gwt's deserialization via gwtrpc back into the client side was the bottleneck. Which is why I began to consider other options such as JavaScript Overlay Types. But then again, I guess forgot that I would have to manage the JSON (or turn them into POJOs, the advantage of GWTRPC you were speaking of I assume?) on the server as well. I suppose the plus side to this is that there is very little deserialization that is needed to be done on the client side. Would I be correct in saying that, since I can't change the speed of my client's computer, I should place the deserialization/serialization work on the server (which I could always allocate more resources for? I guess really I'm looking for bottlenecks or an architecture that would give great scalability~ On Mar 14, 3:43 pm, Thomas Broyer t.bro...@gmail.com wrote: On Wednesday, March 14, 2012 4:35:27 PM UTC+1, Elizabeth Lemon wrote: Hello everyone, I have been looking around for a really long time now on these client- server communication strategies and have had a difficult time choosing the right approach for my application. It also doesn't help that I don't have a very strong background on server sided coding :P In any case, I am trying to find the approach that would give the best performance on the client-side. I know that GWT-RPC uses it's own protocol to get you to the server side. It is built on top of RequestBuilder and converts your data into a content-type of (what I read was) text/plain. From here, it will reconstruct your java object onto the servlet. JavaScript Overlays says that it has no overhead. RequestFactory is supposed to be even faster than GWT-RPC. No serialization is required, but apparently deserialization is. Upon these, there is the old RequestBuilder with a JSONParser. I want to minimize the amount of time it takes for the client to deserialize it's data with a balance of data size. My objects aren't too deep. At most, an object would contain a couple of strings, and two arraylists of 100 objects than contain a couple of other strings. But if I can avoid the deserialization part (where I believe most of the response time is being consumed by) by a simple eval on a JSON or something, that would be great. Other notes: I have flexibility in what server I can use. However, eventually I would like to make web services for non-gwt platforms, though I feel like I could reuse the same business logic and use a different entry point to the service. QUESTIONS: 1. What does it mean for JavaScript Overlays to have no overhead? JSOs are a way of coding in Java against JavaScript objects. The JSO class is a shim that get totally compiled out: no overhead, no wrapping of the JS object. 2. Which one would you say is fastest in terms of client side performance? Most probably JSOs, with JsonUtils for parsing. Next I'd say AutoBeans, then RF, then RPC. Note that server side performance is different: the rpc protocol is much simpler than RF, so it's faster. 3. What does it mean that JavaScriptObjects are Opaque? Where did you read that?! 4. Since JavaScript Overlays describe us extending JavaScriptObjects, does that mean converting it to a JSON requires less (or even zero) time than would GWT-RPC? Yes. Most browsers can do JSON.stringify(), for others you'd have to use JSONObject.toString(), which has a small overhead. Thank you so much for your input~ Choose what works best for you (in terms of protocol), not necessarily the fastest. These won't be the bottleneck of your app's performance, DOM is much more of an issue (and of course the network and the server) On Wednesday, March 14, 2012 4:35:27 PM UTC+1, Elizabeth Lemon wrote: Hello everyone, I have been looking around for a really long time now on these client- server communication strategies and have had a difficult time choosing the right approach for my application. It also doesn't help that I don't have a very strong background on server sided coding :P In any case, I am trying to find the approach that would give the best performance on the client-side. I know that GWT-RPC uses it's own protocol to get you to the server side. It is built on top of RequestBuilder and converts your data into a content-type of (what I read was) text/plain. From here, it will reconstruct your java object onto the servlet. JavaScript Overlays says that it has
[gwt-contrib] Re: Aria attributes on CellTables (7245) (issue1661803)
First, I believe (though I'm not an accessibility expert) that CellTable
needs only aria-activedescendant and aria-selected and everything else
is pure bloat.
DataGrid on the other hand would really benefit from WAI-ARIA, as it's
split into 3 HTML tables.
The problems with aria-selected (which this patch set doesn't add
support for) is that one should put aria-multiselectable too, but that's
not going to work as CellTable does not know how the SelectionModel
works.
Finally, please make your patches against 'trunk': CellTable has been
split in 2 to support DataGrid (in 2.4), builders have been added, as
well as an ARIA support API.
http://gwt-code-reviews.appspot.com/1661803/diff/1/user/src/com/google/gwt/user/cellview/client/CellTable.java
File user/src/com/google/gwt/user/cellview/client/CellTable.java
(right):
http://gwt-code-reviews.appspot.com/1661803/diff/1/user/src/com/google/gwt/user/cellview/client/CellTable.java#newcode325
user/src/com/google/gwt/user/cellview/client/CellTable.java:325:
@Template(table role=\grid\
tabindex=\-1\tbody{0}/tbody/table)
Should tables really be focusable?
http://gwt-code-reviews.appspot.com/1661803/diff/1/user/src/com/google/gwt/user/cellview/client/CellTable.java#newcode329
user/src/com/google/gwt/user/cellview/client/CellTable.java:329:
SafeHtml td(String classes, String headerId, SafeHtml contents);
I don't see the need for headers= here, the HTML algorithms do that
very well already.
http://dev.w3.org/html5/spec/attributes-common-to-td-and-th-elements.html#header-and-data-cell-semantics
http://gwt-code-reviews.appspot.com/1661803/diff/1/user/src/com/google/gwt/user/cellview/client/CellTable.java#newcode1271
user/src/com/google/gwt/user/cellview/client/CellTable.java:1271:
td.removeAttribute(aria-selected);
That should be aria-activedescendant. aria-selected is for managing
selection, not focus.
See http://www.w3.org/TR/2010/WD-wai-aria-practices-20100916/#kbd_focus
http://gwt-code-reviews.appspot.com/1661803/diff/1/user/src/com/google/gwt/user/cellview/client/CellTable.java#newcode1532
user/src/com/google/gwt/user/cellview/client/CellTable.java:1532: String
headerRef = tableId +_h_+curColumn;
That won't work if you have colspan'd headers.
http://gwt-code-reviews.appspot.com/1661803/diff/1/user/src/com/google/gwt/user/cellview/client/CellTable.java#newcode1713
user/src/com/google/gwt/user/cellview/client/CellTable.java:1713: String
headerId = isFooter ? (tableId +_hf_+(curColumn-1)) : (tableId
+_h_+(curColumn-1));
The *_hf_* is never referenced, so totally useless.
http://gwt-code-reviews.appspot.com/1661803/
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