Yves, didn't you indicate that XAML *can* provide a 0-abstraction layer?

If XAML can provide a 0-abstraction layer, I think we should seriously 
consider it, so long as the IP police agree that we can.

I don't know XAML.  Could you put together a small XAML demo showing 
mappings for:

* properties
* methods
* style bits
* layout managers

?

Then we could all more objectively consider our options.

-Dave Orme

On Nov 6, 2008 8:02 AM, "Yves YANG" <[EMAIL PROTECTED]> wrote:

 So let's compare the two directions: abstraction model UI and SWT Centric

 

1. SWT Centric

This approach consists of mapping directly from XML <-> SWT. It is true SWT 
is already an abstraction of the different UI technologies: Win32, GTK, etc. 
But it is low level abstraction: UI Widgets. It doesn't cover more advanced 
concepts. 

 

Could someone tell me why Eclipse invents a new UI Library SWT, instead of 
using Swing, which is already cross platform? From my point of view, SWT 
respects the native Look and Feel, particularly, in Windows. And Swing had 
some problems of performance, ugly look and complexity in development. This 
is a good example of courage to replace the out-of-date solution by a new 
one. Are we in the same situation? SWT is designed mainly to create the UI 
via programming. It is created several years ago. Its API doesn't full 
respect neither the model constraint, non JavaBean specification. Using it 
as main model, the new component will inherit its limitations and we have to 
add outside components to support other features such as style, data 
binding. Does it become a hybrid framework?

 

Since the birth of SWT, the UI technology evolves quickly to markup 
language. Microsoft has the courage to give up the Win32 and invent a new 
component-based framework WPF for providing common and full integrated UI 
platform not only for Developer, but also for graphic designer and business 
analyst. It focuses on content presentation, instead of low level basic UI 
widgets. It really simplifies the UI Development. 

 

I think SWT should stay where it is designed for. 

 

2. Abstract UI model 

Simply, it will give us a new land with maximum freedom to develop a 
complete, extensible UI "Presentation" Framework.

 

Just a thought

 

Best regards

Yves YANG
 ------------------------------
 
*From:* [EMAIL PROTECTED] [mailto:
[EMAIL PROTECTED] *On Behalf Of *Kevin McGuire
*Sent:* Thursday, November 06, 2008 12:32 AM
*To:* E4 developer list

Subject: Re: [eclipse-incubator-e4-dev] Fw: Declarative UI roundup?

Great discussion guys.  I'm only beginning to understand this area and the 
thread has been helpfu...
 
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