Thursday 30 August 2007

Get the generic type of a generic class

Par Vincent DEMAY, Thursday 30 August 2007 :: Java

A simple java line allows to do that : 
[java]
(Class) ((ParameterizedType) getClass().getGenericSuperclass()).getActualTypeArguments()[0];

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Tuesday 28 August 2007

Some examples code on YUI 2.3.0

Par Vincent DEMAY, Tuesday 28 August 2007 :: YUI

Davs Rants is playing with the last YUI version (2.3.0) and he proposes sources code and demos on his blog.
Examples are interesting because they can fit to real web developer needs. Lets have a look...

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A new categorie on my blog: YUI

Par Vincent DEMAY, Tuesday 28 August 2007 :: YUI

In order to be more complete on javascript framework on my blog, I decided to open a new category on my blog about YUI.
This framework is as interresting as Dojo one because it contains a lot of functionnalities and it also has a WicketStuff project : Wicketstuff-yui.

More news on future post...

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Tuesday 21 August 2007

Dojo 0.9.0 has been released

Par Vincent DEMAY, Tuesday 21 August 2007 :: Dojo

Dojo 0.9.0 has been released today.

Here is the feature list (original post from Dylan Schiemann on SitePen) :

Dijit:
* unified look and feel for all widgets
* ambitious a11y and i18n features in every Dijit widget
* a mature CSS-driven theme system with multiple, high-quality themes
* huge improvements in system performance
* data-bound widgets
* Declarations for lightweight widget writing
* a new page parser that allows instances of any class, not just widgets
* no magic

Core:
* reduced API surface area (easier to remember and use)
* dojo.query() always available, returns real arrays
* from-scratch high-performance DnD system
* Base (dojo.js) is 25K on the wire (gzipped)
* dojo.data APIs finalized
* new build system
* new test harness for both CLI and browser use
* dojo.behavior now marked stable and based on dojo.query
* excellent animation APIs with Color animations in Base (always available)
* all the features you’ve come to count on from Dojo (RPC, JSON-P, JSON, i18n, formatting utilities, etc.)

DojoX:
* high quality implementations of previously experimental features:
* gfx (portable 2D drawing)
* data wires
* offline
* storage
* cometd (Bayeux client)
* etc.
* dojox.gfx now includes Sliverlight support
* many more features and improvements than there’s room for here

Read the migration guide for more information

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Thursday 9 August 2007

How to optimize Dojo 0.4.X?

Par Vincent DEMAY, Thursday 9 August 2007 :: Dojo

Dojo out of the box is not really efficient, there are some optimization to do before putting it in production :
  • Build it (Dojo Doc)
    • On command line as explain in Dojo Doc
    • With an Eclipse Plugin
    • With an online application
  • Optimize your Dojo Application as describe in the Dojo Book


You can also read this very interesting article from Eugene Lazutkin about Dojo Application Optimization.

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Wednesday 8 August 2007

Spock : A people search engine

Par Vincent DEMAY, Wednesday 8 August 2007 :: Technologies

I've just tried Spock yesterday and I found the concept quite interesting. Spock is a meta search engine to find... people!

Spock searches on other search engine (as Google), on community web site and on all other kind of web site to found out a person by his name or with some keywords.
As all web 2.0 new web application, you need an invite to use it!

Now, be carefull about your private information, it can be easy to find them with this tool ;)

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WicketStuff Dojo Beta is out

Par Vincent DEMAY, Wednesday 8 August 2007 :: Wicket

The first new WicketStuffDojo release is out. It is named 1.3.0-beta in order to follow wicket version number while it is still possible. WicketStuffDojo-1.3.0-beta depends on wicket-1.3.0-beta2. You can find it on wicketstuff public repo.

You can now use a release ;) . Let us know if you find some bugs (http://wicketstuff.org/jira/browse/DOJO)

Have good fun with it.

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Thursday 2 August 2007

Keyboard events handling nightmare!!

Par Vincent DEMAY, Thursday 2 August 2007 :: Wicket

Handling keyboard events is a real nightmare. If you want connect some keyboard events, this page can be usefull : http://unixpapa.com/js/key.html.
Moreover, you need to know Internet Explorer and firefox do no handle event on the same way:
firefox 
myDomNode.onkeypress = function(event) { alert(event.keyCode)}

ie 
myDomNode.onkeypress = function() { alert(window.event.keyCode)}
Actually IE propage key event on window.



So to deal with that mess you need to do 
myDomNode.onkeypress = function(event) {if (!event){event = window.event;} alert(event.keyCode);}

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IE6 and IE7 do not fully support CSS2!

Par Vincent DEMAY, Thursday 2 August 2007 :: IE sucks

If you want to make cross-browser applications, you need to know that : IE7 as IE6 does not support css2. Actually some css2 attributes are supported but just a very little set.
To avoid any anoyance, just read css2 specification and do not use CSS2 properties (such as inherit).

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How to pass argument to a method called in setTimeout or on a event binding

Par Vincent DEMAY, Thursday 2 August 2007 :: IE sucks

Imagine you want (with javascript of course) giving an argument to a timeout method(it is the same for event connector)
ie 
function aFunction(aVariable){
  window.setTimeout(myFunction(){alert(aVariable)}, 500);
}


This will not work because the function executed on timeOut can not have access to aVariable. So there are to way to deal with that
first : You can use an eval BUT this will throw some exception in our dear IE : 
function aFunction(aVariable){
   window.setTimeout(eval("myFunction(){alert('" + aVariable + "')}", 500);
}
Second, the better You can use a function returning a function : 
function aFunction(aVariable){
   window.setTimeout(getOnTimeOut(aVariable), 500);
}
 
function getOnTimeOut(aVariable){
   return function(){   // no  params
      alert(aVariable);
   }
}

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Wednesday 1 August 2007

When does the Dojo DatePicker start?

Par Vincent DEMAY, Wednesday 1 August 2007 :: Dojo

Dojo is mainly developed and maintained by Americans, so I let you guess what is the first available date in the Dojo DatePicker : 10/12/1492

What about us, poor European from the "old europe" ;). How can we make some references to our huge and old history ? ;)

Thanks to François for the screenshot.

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Where is dos2unix on Ubuntu?

Par Vincent DEMAY, Wednesday 1 August 2007 :: Ubuntu

I was looking for dos2unix on my Ubuntu, and no way to find out it. Reading some blogs, I saw people needs to add some new sources in their sourcelists.
Actually dos2unix is in sysutils package. So to get this command line, just type 
sudo apt-get install sysutils

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