On Thu, Jun 25, 2009 at 9:44 PM, Asiri Rathnayake < asiri.rathnayake@gmail.com> wrote:

Hi,

On Thu, Jun 25, 2009 at 11:53 PM, Niels Mayer <nielsmayer@gmail.com> wrote:

...

Another interesting advanced JS data-visualization toolkit that would be useful to integrate in Xwiki.

http://vis.stanford.edu/protovis/ http://www.technologyreview.com/computing/22927/?nlid=2130 http://flare.prefuse.org/launch/apps/job_voyager

Protovis sounds cool, but the way xwiki macros work will make it difficult (or messy) to implement a macro that will have to depend on a JS library. What we can do is this:

* Implement the wiki-macro bridge: http://jira.xwiki.org/jira/browse/XWIKI-3213 (Basically this will allow you to convert any wiki content into your personal macro) - I'll finish this in a week or so.

* We use a JSX (?) to get protovis support.

* Neils can implement a js charting wiki-macro using protovis ;)

I want to ask other developers, Is this possible? (I have a confusion about macros + js working together)

I have Macros/JS working together all the time, using JSX. I'm certain it's possible, given the kinds of integration I've been able to do in Exhibit&Xwiki, e.g. http://nielsmayer.com/xwiki/bin/view/Exhibit/NPRpods3 ... Here's a simple example, which are tests for my Xwiki integration of http://www.longtailvideo.com/players/jw-flv-player/ which is the media player used in the NPRpods3 application above: http://nielsmayer.com/xwiki/bin/view/Macros/JWPlayer?viewer=code http://nielsmayer.com/xwiki/bin/view/Macros/JWPlayerJSPL_Test (xwiki integration of http://home5.inet.tele.dk/nyboe/flash/mediaplayer4/JW_API_xmpl_5-2-4-0.html with an improvement, the JWplayer example doesn't work on Linux/Firefox, mine does!) http://nielsmayer.com/xwiki/bin/view/Macros/JWPlayerJSPL_Test?viewer=code (wiki-code for above) http://nielsmayer.com/xwiki/bin/jsx/Macros/JWPlayerJSPL_Test (the javascript playlist from XWiki.JavaScriptExtension[0]) ## ## Load and initialize LoadJS: defines injectJS(url) required by JWPlayer ## #includeMacros("Macros.LoadJS")## #loadjs_xwiki_init()## ## ## Load and initialize JWPlayer after LoadJS. ## #includeMacros("Macros.JWPlayer")## #jwplayer_xwiki_init()## ## ## Load JavaScript playlist from object XWiki.JavaScriptExtension[0] into ## js variable jwplayer_jspl, used below in parameter to jwplayer_embed_generic() ## function(jwpl){jwpl.sendEvent(’LOAD’, jwplayer_jspl);}. This function called ## by jwplayer’s playerReady() calback when player has been instantiated, and ## causes the javascript-based playlist to get loaded. ## $xwiki.jsx.use("$doc.fullName")## ... #set( $jw_name = "$doc.name" )## #set( $jw_player = "jwplayer_embed_generic(’$jw_name’, ’mpl’, ’&autostart=false&playlist=right&playlistsize=250&shuffle=false&repeat=always’, function(jwpl){jwpl.sendEvent(’LOAD’, jwplayer_jspl);}, ’100%’, ’385px’);" )## #jwplayer_create("$jw_name", "$jw_player")## http://nielsmayer.com/xwiki/bin/view/Macros/JWPlayerPL_Test is another test using playlists. This also calls JS jwplayer_embed_generic(), but with an external file, passed as URL/string, instead of creating the playlist in lambda-function as above. ( http://nielsmayer.com/xwiki/bin/view/Macros/JWPlayerPL_Test?viewer=code ): #set( $jw_player = "jwplayer_embed_generic(’$jw_name’, ’mpl’, ’&autostart=false&playlist=right&playlistsize=250&shuffle=false&repeat=always’, ’/xwiki/bin/view/Macros/JWPlayer_PlayList?xpage=plain’, ’100%’, ’385px’);" )## JS functions jwplayer_embed(), jwplayer_embed_generic() and macros #jwplayer_xwiki_init(), #jwplayer_create() are from http://nielsmayer.com/xwiki/bin/view/Macros/JWPlayer?viewer=code --- Going in "the other direction", here's an example of using velocity to compute results returned by Javascript: http://svn.xwiki.org/svnroot/xwiki/curriki/branches/curriki-1.8/web/src/main... #set( $total_attachments_size = 0 ) ## javascript:getAttachmentsSize() #set( $total_attachments_names = [] ) ## javascript:getAttachmentsNames() #foreach ($attach in $doc.attachmentList) ## { #set( $ok = $total_attachments_names.add("'${attach.filename}'") ) ## append attachment filename to ArrayList #set( $total_attachments_size = ${total_attachments_size} + ${attach.getFilesize()} ) ## compute total size of atttachments #end ## } -- foreach ... function getAttachmentsNames() { return (${total_attachments_names}); } function getAttachmentsSize() { return (${total_attachments_size}); } ... lpattachments is called from an iframe. The parent document accesses the iframe'd document's javascript functions like this: ( http://svn.xwiki.org/svnroot/xwiki/curriki/branches/curriki-1.8/wiki/src/mai... ) // // get size of files in attachments iframe // function getAttachmentsSize() { return (window.frames['attachment_iframe'].getAttachmentsSize()); } // // retrieve ArrayList of filenames contained in attachment // function getAttachmentsNames() { return (window.frames['attachment_iframe'].getAttachmentsNames()); } -- Niels http://nielsmayer.com