Google Web Toolkit News - onGWT.com

C'est les vacances - It's holidays

dgirard — Fri, 03 Jul 2009 18:31:00 +0200

I'm on holidays for about 15 days. I will try to keep away as much as I can from an internet connection. So if everything go well there will be no update on this web site during this period.

Of course my return, with tons of mails/news/blogs/tweets, will be hard. If you want to help me to filter all this noise, just send me an email (didier.girard@gmail.com) with "[Breaking news for onGWT]" in the subject.

Take care, Didier

Here is the target (grandfather home): Chatel-de-Joux

Client-side GChart 2.5

dgirard — Fri, 03 Jul 2009 18:08:00 +0200

John C. Gunther :

Client-side GChart 2.5 adds a new canvas-rendering option for faster, better-looking, line, pie, and area charts with RGBA (alpha-transparent) colors.
This release also adds centered/inside ticks, improved chart print-ability, and more.
GChart performs its rendering via GWT Widgets, but GWT does not come with a canvas Widget standard. So, you'll have to implement an interface that teaches GChart how to create thecanvas Widgets it needs to render your charts.
Sounds complicated, but, if you use the GWT incubator project's GWTCanvas, it's easy. Just add gwt-incubator.jar to your project build path and .gwt.xml file as usual. Then copy about 6 lines of standard boilerplate into your application's EntryPoint class. Done.
The live demo provides a working example (follow the link at the bottom of the page to see how the live demo includes the required boilerplate).
Note that, if you are OK with its default HTML-only rendering, GChart still works just fine without such canvas-related interfacing. You won't escape the much-maligned banded-filled pie slices, but that's life.
Canvas rendered, and still 100% pure GWT Java?
Granted, GWTCanvas contains a heck of a lot of Javascript that isn't part of the standard GWT distro. So, the claim that GChart is strictly layered on plain-vanilla GWT, though technically true (there's no Javascript in GChart itself), is a bit misleading if you need to use the canvas rendering option.
On the other hand, GChart uses GWTCanvas in the same 'who cares what browser' manner that it uses, say, the standard GWT Grid Widget. Moreover, there is a reasonably good chance that some future GWT distro will include a better, improved, GWTCanvas.
So, GChart is still designed around the idea of being strictly layered on top of Widgets and such that capture the browser-specific differences at the lowest possible level. This approach assures that your chart library isn't just open source, it's 'you can easily read, change, and debug the source'.
One easily quantified advantage of GChart's approach: when I recompiled the live demo in transitioning from 1.5.3 to 1.6.4, I noticed that the charts were rendering about 15% faster.

Homepage(live demo, downloads, docs): http://gchart.googlecode.com

Release Notes: http://gchart.googlecode.com/svn/trunk/doc/com/googlecode/gchart/client/doc-files/gchart2p5features.html

Firefox 3.5 - Yes

dgirard — Wed, 01 Jul 2009 16:33:00 +0200

Every major version of a browser is a major event in the GWT community. Firefox 3.5 is one of these major events : Firefox 3.5 helps GWT applications to run faster.

http://www.mozilla-europe.org/fr/firefox/

Google Developer Days Brazil 2009 - Keynote

dgirard — Mon, 29 Jun 2009 17:20:00 +0200

Patrick Chanezon has published its GDD Brazil 2009 keynote.

Very nice slideshow.

GDD Brazil 2009 - Keynote

Advanced Browser Performance tool for IE

dgirard — Mon, 29 Jun 2009 16:36:00 +0200

Dion Almaer

They have surprised us again with their new tool MSFast which is “a browser plugin that help developers to improve their code performance by capturing and measuring possible bottlenecks on their web pages.”

MySpace open sources advanced browser performance tool for IE

Developer Sandbox Interviews : myERP.com - this video is in French...

dgirard — Mon, 29 Jun 2009 16:26:00 +0200

Patrick Chanezon, Developer Advogate chez Google, a interviewé les développeurs de myERP.com. Intéressant.

http://jamgoogle.com/developer-sandbox-interviews-myerp-com/

Let's make the web faster

dgirard — Mon, 29 Jun 2009 15:39:00 +0200

code.google.com/speed :

What would be possible if browsing the web was as fast as turning the pages of a magazine? We invite you to join us in exploring and innovating across the entire spectrum of performance - from Internet protocols to the browser to website development. Together, let's make the web faster!

http://code.google.com/speed/

Eclipse-Databinding 3.5 for GWT

dgirard — Mon, 29 Jun 2009 11:10:00 +0200

Tom :

I’m a big fan of GWT but one of the real pain points when developing GWT applications is that there’s no databinding framework available to synchronize your domain objects and UI-Widgets.

As many of you know I’m an even bigger fan of Eclipse-Databinding because it is written so that it can be used with ANY Model-Technology you want and even more important ANY UI-Technology you want and in fairly every environment you want (or at least porting to it is possible without too much trouble).

I’m happy to announce that the days without a databinding solution are gone forever now because yesterday in the night I made Eclipse-Databinding 3.5 compile under GWT and already wrote the first WidgetProperty implementations for Text and Label-Widgets.

Eclipse-Databinding 3.5 for GWT

Do you want to play with GWT 2.0 ?

dgirard — Fri, 26 Jun 2009 12:38:00 +0200

Matt Raible :

One of the most interesting features coming in GWT 2.0 is code splitting and the ability to use GWT.runAsync() to reduce the size of your application's initial download. This week, I learned how to use GWT 2.0 with my GWT 1.6/Maven project. Below are instructions on how to build and use the latest GWT with Maven.

http://raibledesigns.com/rd/entry/how_to_use_gwt_2

onGWT.com powered by GWT and AppEngine, why not ?

dgirard — Fri, 26 Jun 2009 12:17:00 +0200

With my team we start to build a blog engine for AppEngine. I'm confident that one day, this solution will fully support onGWT. Here is a first try.

To be precise : the frontend is in classical servlet/JSP (compatible with googlebot), the backend is in GWT.

onGWT.com powered by WolfEngine

XWiki Wysiwyg Editor - powered by GWT

dgirard — Wed, 24 Jun 2009 08:35:00 +0200

The XWiki team has built a very nice Wysiwyg Editor. Vincent Massol, CTO of XWiki, told me a few month ago that they will opensource it in a in its own project. I hope XWiki team will have the time to do it.

WYSIWYG User's Guide

Vaadin : who can explain me what is Vaadin ?

dgirard — Tue, 23 Jun 2009 16:23:00 +0200

Is it GWT or not ?

Is it a wrapper or not ?

Is it as spectacular as it is said ?

http://vaadin.com/home

GWT Overview and Feature Preview by Fred Sauer

dgirard — Tue, 23 Jun 2009 13:16:00 +0200

Overview of Google Web Toolkit (GWT) and GWT 2.0 Feature Preview, presented at the Silicon Valley Web Java User Group on June 16 2009 at the Googleplex in Mountain View, CA.

Presentation

GWT and OAuth

dgirard — Fri, 19 Jun 2009 13:35:00 +0200

Matt Raible :

Since the application I'm working on uses GWT, I chose to implement an OAuth client in GWT. After googling for "gwt oauth", I found two examples. Unfortunately, neither worked out-of-the-box.

The good news is I did manage to create a working solution.

Implementing OAuth with GWT

HTML 5 - Using Audio Tag

dgirard — Fri, 19 Jun 2009 11:53:00 +0200

The piano and text are from Jono. Requires Firefox 3.5 or another browser with <Audio> tag support (Chrome 3). You can play this by clicking on it with the mouse, or by using the keys on your real keyboard that correspond to the labels below. It supports chords (play multiple notes at the same time by holding down multiple keys on your real keyboard). Try it!

Really fun.

http://people.mozilla.org/~dietrich/piano/piano.html

Source : Tristan Nitot (Mozilla Europe)

GWT UML - A must see

dgirard — Thu, 18 Jun 2009 06:03:00 +0200

Dietrich Kappe

Florian Mounier has spent the last six months developing GWT UML, a slick little UML diagramming tool written in, obviously, GWT.

Really impressive.

Project code

Demonstration

Source : GWTUML - Just Enough UML for Wikis

Building a Google Wave Gadget with GWT

dgirard — Tue, 16 Jun 2009 17:14:00 +0200

Alex Moffat :

I’ve just written my first Google Wave Gadget using GWT with the Gadgets portion of the Google API Libraries for GWT. You can see it in action in the video below. I’ll describe how I got this to work and talk about the source code below the fold. The complete source for this example Wave Gadget can be downloaded.

Building a Google Wave Gadget with GWT

Demo PureMVC for GWT

dgirard — Tue, 16 Jun 2009 07:36:00 +0200

This demo illustrates techniques for performing routine maintenance operations in a PureMVC-based Java/GWT application.

Home Demo - GWT / Employee Admin

Live Demo

June 16, 2009 - GWT at Googleplex

dgirard — Tue, 16 Jun 2009 07:15:00 +0200

Fred Sauer :

For those of you in and around Silicon Valley, I'd like to invite you to see my Google Web Toolkit presentation titled "GWT Overview and Feature Preview" at the Silicon Valley Web Java User Group. I'll start with an overview of current GWT features and functionality. Towards the end I'll cover some of the features you can expect to see in GWT 2.0, many of which you can try out now if you don't mind creating your own builds. Of course there will be plenty of time for Q&A and some time to network with other developers in the community.

Come hear about GWT at the Googleplex

Enhancing evite.com with GWT and Grails

dgirard — Mon, 15 Jun 2009 16:42:00 +0200

Matt Raible :

Everyone from Evite is very happy with what we've been able to do with GWT and Grails. We have a stateless architecture and are quickly able to develop both client-side and server-side features. We've learned to scale the client by using out-of-the-box GWT components. We've scaled Grails by caching as much as possible. We serve up Ads and Analytics using the same JavaScript mechanisms that traditional server-side frameworks use.

@Matt, thanks for sharing.

Enhancing Evite.com with GWT and Grails