[Haskell-cafe] Need advice: Haskell in Web Client
**Bardur Arantsson wrote: On 01/26/2012 11:16 AM, dokondr wrote: Ideally, I would be happy to be able to write in Haskell a complete front-end / GUI, so it could be compiled to different back-ends: Javascript to run in the Browser and also a standalone app. In Python world this is already done with Pyjamas (http://pyjs.org/) - a Rich Internet Application (RIA) Development Platform for both Web and Desktop. Also from Pyjamas site: Pyjamas ... contains a Python-to-Javascript compiler, an AJAX framework and a Widget Set API. Pyjamas Desktop is the Desktop version of Pyjamas Pyjamas Desktop allows the exact same python web application source code to be executed as a standalone desktop application (running under Python) instead of being stuck in a Web browser. Architecture diagram http://pyjs.org/wiki/pyjamasandpyjamasdesktop/ I wonder if somebody works on similar Haskell Rich Internet Application (RIA) Development Platform ? Any ideas, comments on implementation of such system in Haskell? What existing Haskell GUI libraries can be used for a desktop GUI, etc.? Well, it's basically just proof-of-concept at the moment, and it's not really usable for real applications at the moment, but there is http://hackage.haskell.org/package/dingo-core-0.1.0 http://hackage.haskell.org/package/dingo-widgets-0.1.0 http://hackage.haskell.org/package/dingo-example-0.1.0 The basic client-server communication, server-side state handling, etc. is there, but it's missing a couple of things before it could be used for real apps: There's no real security, and there are *very* few widgets. The few widgets that exist at the moment are also probably lacking a few operations. On the plus side, it's should be pretty easy to create new widgets. You can get a feel for how the thing looks from an application programmer's perspective by looking at the source for the example. Looks neat, thanks! If I got this write, in dingo all web page content is created by running Haskell on the server side in run-time and then sending generated html + js to the client (browser). I am looking for the opposite - when client does more work running Javascript generated by Haskell in advance, the approach that Pyjamas use ( http://pyjs.org/) with Python to Javascript compilation. ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] Need advice: Haskell in Web Client
On Thu, Jan 19, 2012 at 1:37 AM, Dag Odenhall dag.odenh...@gmail.comwrote: On Tue, 2012-01-17 at 22:05 +0300, dokondr wrote: I prefer using Turing complete PL to program web client, like the one used in GWT (Java) or Cappuccino (Objective-J). http://cappuccino.org/learn/ In this case you /almost/ don't need to know HTML, CSS, DOM, Ajax, etc. to develop WebUI and good PL lets you concentrate on problem domain instead of bothering about browser support. It is a real pity that Haskell still has no such tools to generate Web GUI in Javascript. ((( Have you seen Chris Done's posts on the subject? http://chrisdone.com/tags/javascript.html Thanks for the link! (Never seen this before) Ideally, I would be happy to be able to write in Haskell a complete front-end / GUI, so it could be compiled to different back-ends: Javascript to run in the Browser and also a standalone app. In Python world this is already done with Pyjamas (http://pyjs.org/) - a Rich Internet Application (RIA) Development Platform for both Web and Desktop. Also from Pyjamas site: Pyjamas ... contains a Python-to-Javascript compiler, an AJAX framework and a Widget Set API. Pyjamas Desktop is the Desktop version of Pyjamas Pyjamas Desktop allows the exact same python web application source code to be executed as a standalone desktop application (running under Python) instead of being stuck in a Web browser. Architecture diagram http://pyjs.org/wiki/pyjamasandpyjamasdesktop/ I wonder if somebody works on similar Haskell Rich Internet Application (RIA) Development Platform ? Any ideas, comments on implementation of such system in Haskell? What existing Haskell GUI libraries can be used for a desktop GUI, etc.? Thanks! ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] Need advice: Haskell in Web Client
On 01/26/2012 11:16 AM, dokondr wrote: On Thu, Jan 19, 2012 at 1:37 AM, Dag Odenhalldag.odenh...@gmail.comwrote: On Tue, 2012-01-17 at 22:05 +0300, dokondr wrote: I prefer using Turing complete PL to program web client, like the one used in GWT (Java) or Cappuccino (Objective-J). http://cappuccino.org/learn/ In this case you /almost/ don't need to know HTML, CSS, DOM, Ajax, etc. to develop WebUI and good PL lets you concentrate on problem domain instead of bothering about browser support. It is a real pity that Haskell still has no such tools to generate Web GUI in Javascript. ((( Have you seen Chris Done's posts on the subject? http://chrisdone.com/tags/javascript.html Thanks for the link! (Never seen this before) Ideally, I would be happy to be able to write in Haskell a complete front-end / GUI, so it could be compiled to different back-ends: Javascript to run in the Browser and also a standalone app. In Python world this is already done with Pyjamas (http://pyjs.org/) - a Rich Internet Application (RIA) Development Platform for both Web and Desktop. Also from Pyjamas site: Pyjamas ... contains a Python-to-Javascript compiler, an AJAX framework and a Widget Set API. Pyjamas Desktop is the Desktop version of Pyjamas Pyjamas Desktop allows the exact same python web application source code to be executed as a standalone desktop application (running under Python) instead of being stuck in a Web browser. Architecture diagram http://pyjs.org/wiki/pyjamasandpyjamasdesktop/ I wonder if somebody works on similar Haskell Rich Internet Application (RIA) Development Platform ? Any ideas, comments on implementation of such system in Haskell? What existing Haskell GUI libraries can be used for a desktop GUI, etc.? Well, it's basically just proof-of-concept at the moment, and it's not really usable for real applications at the moment, but there is http://hackage.haskell.org/package/dingo-core-0.1.0 http://hackage.haskell.org/package/dingo-widgets-0.1.0 http://hackage.haskell.org/package/dingo-example-0.1.0 The basic client-server communication, server-side state handling, etc. is there, but it's missing a couple of things before it could be used for real apps: There's no real security, and there are *very* few widgets. The few widgets that exist at the moment are also probably lacking a few operations. On the plus side, it's should be pretty easy to create new widgets. You can get a feel for how the thing looks from an application programmer's perspective by looking at the source for the example. ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] Need advice: Haskell in Web Client
On Wed, Jan 18, 2012 at 10:47 AM, John Lenz l...@math.uic.edu wrote: I don't see a great need of developing something like GWT for haskell, since we already have good support for all sorts of existing tools that span more than just haskell, like extjs, yui, and jqueryui. Haskell makes my work doable in many areas where other PLs will take enormous efforts and time to achieve the same result. It would be great if I could write Web client code in pure Haskell (no HTML, no DOM, no Ajax, ..) compile it to Javascript and just run it in the browser and do all GUI and backend communication work. Simple as that. Regards, Dmitri. ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] Need advice: Haskell in Web Client
dokondr dokondr at gmail.com writes: It would be great if I could write Web client code in pure Haskell [...] not exactly Haskell, but you may want to have a look at OPA http://opalang.org/ the idea is that you write all of the application in one (statically typed, functional) language and the framework takes care of distributing the code to server and client (and on the client, it shows up as JavaScript) J.W. ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] Need advice: Haskell in Web Client
On Tue, 2012-01-17 at 22:05 +0300, dokondr wrote:
On Tue, Jan 17, 2012 at 6:42 PM, John Lenz l...@math.uic.edu wrote:
HTML5 Canvas is great for charts. If you go this route you might as well
use a library which draws charts for you instead of writing all this code
yourself.
Personally, I use extjs version 4 which has some amazing charts, but there
are other libraries out there.
http://www.sencha.com/**products/extjs/examples/#**sample-3http://www.sencha.com/products/extjs/examples/#sample-3
Essentially the server provides the data in JSON or XML some other format,
and the extjs code draws the charts on the client side.
If you go with extjs, then the server side I would suggest a small, simple
yesod or snap server. You could probably get the server under a hundred
lines of code with yesod; see some of the examples in the yesod book.
yesod or snap would serve JSON of the statistics on request, and also
serve the javascript files which draw the charts.
Yes, I was thinking about using Haskell to generate everything that
specific Javascript library needs to display charts in browser. Naturally
charts are to be displayed by this library itself. I also would like to
have Haskell tools to generate Web GUI in Javascript.
As for yesod, I am not sure that I like approach which mixes HTML with
code, or even worse - creates a new weird HTML-like language like 'whamlet
quasi-quotation', for example:
!-- a href=@{Page1R}Go to page 1! --
I prefer using Turing complete PL to program web client, like the one used
in GWT (Java) or Cappuccino (Objective-J). http://cappuccino.org/learn/
In this case you /almost/ don't need to know HTML, CSS, DOM, Ajax, etc. to
develop WebUI and good PL lets you concentrate on problem domain instead of
bothering about browser support.
It is a real pity that Haskell still has no such tools to generate Web GUI
in Javascript. (((
Have you seen Chris Done's posts on the subject?
http://chrisdone.com/tags/javascript.html
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[Haskell-cafe] Need advice: Haskell in Web Client
Hi all, I hope to use Haskell for graphics (charts) programming in Web client. My current implementation in brief: Server side, Haskell modules: 1) collecting various statistics from Twitter 2) generating text data for Gnuplot (http://www.gnuplot.info/) 3) Gnuplot creates png files with charts Web client: GWT (Google Web Toolkit) web UI that allows user to enter queries and see resulting charts in Web browser. Charts are png files generated by Gnuplot on the server side. Ideally, on the server side instead of using Gnuplot I would like Haskell to generate Javascript to be downloaded to Web client and draw charts in the browser. Something, very approximately, similar to what GWT does :) This code will be specific of course to plotting Javascript framework, no problem. Looking at Haskell in web browser - HaskellWiki: http://www.haskell.org/haskellwiki/Haskell_in_web_browser#Haskell_web_toolkit I feel a little confused about current state of the available Haskell tools for this task. Any ideas? Thanks! Dmitri ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] Need advice: Haskell in Web Client
On Tue, Jan 17, 2012 at 4:19 PM, dokondr doko...@gmail.com wrote: Hi all, I hope to use Haskell for graphics (charts) programming in Web client. My current implementation in brief: Server side, Haskell modules: 1) collecting various statistics from Twitter 2) generating text data for Gnuplot (http://www.gnuplot.info/) 3) Gnuplot creates png files with charts Web client: GWT (Google Web Toolkit) web UI that allows user to enter queries and see resulting charts in Web browser. Charts are png files generated by Gnuplot on the server side. Ideally, on the server side instead of using Gnuplot I would like Haskell to generate Javascript to be downloaded to Web client and draw charts in the browser. Something, very approximately, similar to what GWT does :) This code will be specific of course to plotting Javascript framework, no problem. Looking at Haskell in web browser - HaskellWiki: http://www.haskell.org/haskellwiki/Haskell_in_web_browser#Haskell_web_toolkit I feel a little confused about current state of the available Haskell tools for this task. Any ideas? Hi Dimitri, Perhaps HTML5's canvas element would meet your requirement. There a few JS chart implementation for HTML5 floating on the internet. Regards, Kashap ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] Need advice: Haskell in Web Client
On Tue, Jan 17, 2012 at 3:07 AM, C K Kashyap ckkash...@gmail.com wrote: Perhaps HTML5's canvas element would meet your requirement. There a few JS chart implementation for HTML5 floating on the internet. The Google Charting API *might* be sufficient: http://code.google.com/apis/chart/ --Rogan Regards, Kashap ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] Need advice: Haskell in Web Client
On Tue, Jan 17, 2012 at 6:42 PM, John Lenz l...@math.uic.edu wrote:
HTML5 Canvas is great for charts. If you go this route you might as well
use a library which draws charts for you instead of writing all this code
yourself.
Personally, I use extjs version 4 which has some amazing charts, but there
are other libraries out there.
http://www.sencha.com/**products/extjs/examples/#**sample-3http://www.sencha.com/products/extjs/examples/#sample-3
Essentially the server provides the data in JSON or XML some other format,
and the extjs code draws the charts on the client side.
If you go with extjs, then the server side I would suggest a small, simple
yesod or snap server. You could probably get the server under a hundred
lines of code with yesod; see some of the examples in the yesod book.
yesod or snap would serve JSON of the statistics on request, and also
serve the javascript files which draw the charts.
Yes, I was thinking about using Haskell to generate everything that
specific Javascript library needs to display charts in browser. Naturally
charts are to be displayed by this library itself. I also would like to
have Haskell tools to generate Web GUI in Javascript.
As for yesod, I am not sure that I like approach which mixes HTML with
code, or even worse - creates a new weird HTML-like language like 'whamlet
quasi-quotation', for example:
!-- a href=@{Page1R}Go to page 1! --
I prefer using Turing complete PL to program web client, like the one used
in GWT (Java) or Cappuccino (Objective-J). http://cappuccino.org/learn/
In this case you /almost/ don't need to know HTML, CSS, DOM, Ajax, etc. to
develop WebUI and good PL lets you concentrate on problem domain instead of
bothering about browser support.
It is a real pity that Haskell still has no such tools to generate Web GUI
in Javascript. (((
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