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From Florian Leitner <>
Subject Re: CouchDB and XULJet for development of desktop applications
Date Fri, 10 Dec 2010 16:03:48 GMT
Hi Pavel,

Thanks for your detailed responses. As you will have seen, I've
replied to your comments in another thread, too. Specifically to what
you wrote here:

Yes, XULjet seems to very much solve the client side issues and
creates a nice platform-independent interface for desktop apps.
However, as I already wrote in another thread you replied to, too, it
seems I will have to create _two_ interfaces: one web interface for
the servers (using some web server wrapper for CouchDB, such as
LivelyCouch), and one desktop interface for the clients (using
XULjet). However, I could be completely wrong about this and maybe
XULjet could also be used to serve web pages, so I can use XULjet for
both interfaces? If that were the case, XULjet would actually be the
perfect solution I am looking for, because I do not need to maintain
two interfaces. So, is that possible with XULjet?


On 10 December 2010 09:56, Pavel Krivanek <> wrote:
> Hi,
>> Hi Pavel,
>> I just read your post after my own, entitled "CouchDB/App, XHR, and
>> the JavaScript Same Origin Policy". This sounds pretty interesting,
>> especially your qoute about the Ajax issue and working around the Same
>> Origin Policy. So, if this is a good tool to build desktop-based
>> CouchDB apps, how platform-independent is it?
> It is possible to run on every platform where Firefox works, so MacOS,
> Windows and Linux are OK. Other processors should be ok too, if you
> look at XULRunner Debian builds, it is supported by alpha amd64 arm
> armel hppa i386 ia64 mips mipsel powerpc s390 sparc. I suppose that
> other systems like BSD should work too. On the other hand, most of the
> mobile platform are currently out of the game.
>> Can I easily build tools
>> that work equally well on OSX, Windows, and Linux without any "special
>> case" checking, much like in a platform independent language?
> XULRunner have some displaying issues, for example it doesn't show
> lines in groupboxes on Linux. If some hacks will be necessary I expect
> it will be solved inside the XULJet framework.
>> Does it
>> support any other platforms beyond those "big three"?
> See above
>> And, last, you
>> write you can easily embed SVG and HTML - what about PDF files, can
>> you view/display those through some plugin, maybe like the typical
>> browser plugins?
> I have no personal experience with it however it seem that it is possible:
> -- Pavel
>> Thanks,
>> Florian
> On 8 December 2010 22:58, Pavel Krivanek <> wrote:
>> Hi all,
>> I think you should pay attention XULJet framework [1]. This framework
>> tries to facilitate the development of JavaScript applications on the
>> Mozilla XULRunner runtime and it is maybe the most natural way how to
>> develop desktop applications supported by CouchDB.
>> Ajax requests have no limited destinations in XULRunner and with other
>> privileges (access to local files, execution of local processes...) it
>> provides an easy-to-use platform for desktop applications with native
>> look&feel.
>> Because the applications are written in JavaScript it is really very
>> easy to work with CouchDB.
>> XULJet has this main features:
>> - component-based structure that increases reuseability of the code
>> - readable description of GUI directly in JavaScript, no need of
>> external XML files
>> - powered by Google Closure Library that provides good modular system
>> and additional tools
>> - easy access to XUL elements using bindings to component properties
>> - simple embedding of HTML and SVG
>> - forms (they have no direct support in XUL)
>> - simple generation of printed reports
>> The archive with version 2.0.1 includes CouchDB library from Futon
>> with small modifications for the Closure Library.
>> [1]
>> Cheers,
>> -- Pavel Krivanek

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