Re: [xsl] Opera's JavaScript API for XSLT?

["M. David Peterson" <m.david@xxxxxxxxxx>]

VERY COOL! 

I've got some code that you might be interested in... It's pretty basic, 
but it implements a browser-based transformation DOM cache which assigns 
an ID to a particular DOM that has been transformed, storing the result 
in an array cache.  It then checks the array cache before running a 
transformation to see if its already been run, and if yes, returns the 
DOM from the cache instead.

I wrote this one morning who knows how long ago, and never came back to 
it (the name of the file alone to make that an easy point to notice ;), 
so without a doubt it can be improved upon, but if its something that 
you find useful, you can access it here > 
http://www.xsltblog.com/xslclient-test.js

The pertinent pieces of code are,

function loadXMLFeed(feedID){
var inMemory = false;
var xmlFeedLength = xmlFeeds.length;
var i;
for (i = 0; i< xmlFeedLength; i++){
  if (xmlFeeds[i][0] == feedID){
     inMemory = true;
     return xmlFeeds[i][1];
  }
}
if (!inMemory){
for (i = 0; i< xmlURLList.length; i++){
  if (xmlURLList[i][0] == feedID){
     var tempDoc = loadAtomFeed(xmlURLList[i][1]);
     xmlFeeds[xmlFeedLength] = new Array(feedID, tempDoc);
     return tempDoc;
  }
 }
}
return false;
};





And,

function checkTransformCache(target, dom, style, xmlfeed){

var inCache = false;
var i;

 if (transformCache.length){
   for (i = 0; i< transformCache.length; i++){
      if (transformCache[i][0] == xmlfeed){
         target.innerHTML = transformCache[i][1];
         inCache = true;
      }
   }
 }

 if (!inCache){
   setDOMSource(dom);
   setStylesheet(style);
   setFeedID(xmlfeed);
   Transform();
 }

};



Playing with your code now... Thanks! :D







Robert Koberg wrote:
> M. David Peterson wrote:
> > Hey Robert,
> >
> > Robert Koberg wrote:
> > > Hi,
> > >
> > >
> > > I have added some XSL transformation conveniences to the dojo 
> > > toolkit (http://dojotoolkit.org - you would need to use SVN and get 
> > > the trunk)
> > WOW!  I hadn't realized how big Dojo had become.  I've got the 
> > repository checked out.  Where can I find your extensions?
>
> Dojo is pretty cool :) Docs kinda suck. The dojo.xml.XslTransform 
> class is in: dojo/src/xml. Be sure to check out 
> dojo/tests/xml/test_XslTransform.html for some different uses.
>
> Basically, the public API (I am open to change or extend it to make it 
> more useful) looks like:
>
> dojo.xml.XslTransform = function(/*String*/ xsltUri) {
> /*
> Common params:
> xmlDoc - the primary XML source
> params - a 2 dim array, e.g. [[name, value]] which is cleared after 
> each transform
> parentDoc - the window.document that is the parent of the result
> */
>
> this.getResultString = function(/*XMLDOcument*/ xmlDoc, /*2 
> Dimensional Array*/params, /*HTMLDocument*/parentDoc)
>
> /*
> contentPane - dojo specific layout region to put the result into 
> (instatiates child widgets)
> */
> this.transformToContentPane = function(/*XMLDOcument*/ xmlDoc, /*2 
> Dimensional Array*/params, /*ContentPane*/contentPane, 
> /*HTMLDocument*/parentDoc);
>
> /*
> region - some HTML element to put the result into
> */
> this.transformToRegion = function(/*XMLDOcument*/ xmlDoc, /*2 
> Dimensional Array*/params, /*HTMLElement*/region, 
> /*HTMLDocument*/parentDoc);
>
> this.transformToDocument = function(/*XMLDOcument*/ xmlDoc, /*2 
> Dimensional Array*/params);
>
> this.transformToWindow = function(/*XMLDOcument*/ xmlDoc, /*2 
> Dimensional Array*/params, /*HTMLDocument*/windowDoc, 
> /*HTMLDocument*/parentDoc);
>
> }
>
> best,
> -Rob

--
/M:D

M. David Peterson
http://mdavid.name | http://www.oreillynet.com/pub/au/2354