Marcos Douglas wrote:
Hi Lee,
So I'm taking advantage of the extra time and refactoring the framework a
bit and implementing a DHTML UI layer now. We looked at ExtJS as well as
YahooUI, OpenLaszlo and a few of the others and eventually decided on Dojo
javascript tookit, but different UI layers can be plugged in. Heck, even an
LCL or fpGUI layer is feasible.
Your project is open source?
I'm very interested about that. Do you use some "template engine" for UI?
The tecnology WebBroker (old Delphi) had macros for replace in events
like #name or #salary. That is very simply but very coupled. We had
HTML code coupled with Pascal code. The designers could not easily
change UI code because that.
Yes, I had plans to release it open source when its ready for testing, probably
within 3-4 weeks from now.
The idea of the framework is mainly based on Proxy pattern. You build your gui
within the server session, similar to how ExtPascal does it though with a more
VCL/LCL kinds of model than ExtPascal. however, note that it doesn't use
VCL/LCL and is based non-gui objects like TInterfacedPersistent to avoid
dependencies on Lazarus LCL or Delphi VCL.
My goals in its development has been to ensure that the framwork overall:
A) Not tied to any particular GUI front-end, they should be swappable. I should
be able to present my Model/Controller (or other business logic) in different
UI's such as Flex, Silverlight, ExtJS, Dojo, OpenLaszlo, etc while still keeping
95% of the code on the server.
B) Any server platform or protocol. For instance, you should be able to deploy
your application using what ever server protocol that is appropriate for the
job. So feasibly you should be able to deploy your server app to FastCGI,
Apache Module, ISAPI or even a stand alone synapse based HTTP server like I am
using for testing.
Think of it as using the client UI as a puppet, with the server telling the
client what to display through a two-way event system.
Here is a short screencast of the framework using the Flex UI layer. Note that
its pretty old and the framework has come a long way since this screencast and
as I said, I'm going through some refactoring now since I have to change some
things for the customer anyway.
http://preview.tinyurl.com/18r
--
Warm Regards,
Lee
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