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Posted to batik-users@xmlgraphics.apache.org by Marcel Ruff <mr...@marcelruff.info> on 2003/08/23 20:19:32 UTC

Javascript createElement: bug in batik?

Hi,

i'm using Batik 1.5 on Linux with java 1.4.1

In the <defs> section i have defined a rectangle
from which i want to create many instances with Javascript,
but nothing is displayed.
Showing the <def> directly with

   <use id="ZZ" xlink:href="#XX"/>

works fine.
Here is the failing code:

------------------------------------------
<?xml version="1.0" standalone="no"?>
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.0//EN"
"http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd">

<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"
      width="800" height="500" viewBox="0 0 800 500"
      onload="doInit(evt)">

<defs>
    <script type="text/ecmascript">
    <![CDATA[
    function doInit(evt) {
       var svgDoc = evt.target.ownerDocument;
       var svgTag = svgDoc.getFirstChild();
       var use = svgDoc.createElement("use");
       use.setAttribute("id", "ZZ");
       use.setAttributeNS("http://www.w3.org/1999/xlink", "href", "#XX");
       svgTag.appendChild(use);

       // test:
       var el = svgDoc.getElementById("ZZ");
       alert("elem=" + use.getAttribute("id"));
       alert("elem=" + use.getAttribute("href"));
    }
   ]]>
   </script>

   <rect id="XX" x="10" y="10" width="20" height="100" style="fill:blue"/>
</defs>

     <!-- use id="ZZ" xlink:href="#XX"/ -->

</svg>
---------------------------------------------

Is this a bug in batik or do i make a mistake?

thanks for some help

Marcel



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Re: Javascript createElement: bug in batik?

Posted by Marcel Ruff <mr...@marcelruff.info>.
Marcel Ruff wrote:
> Hi,
> 
> i'm using Batik 1.5 on Linux with java 1.4.1

OK, it is resolved, this works:

    function doInit(evt) {
       var svgDoc = evt.target.ownerDocument;
       var svgNS = "http://www.w3.org/2000/svg";
       var svgXLink = "http://www.w3.org/1999/xlink";
       var svgRoot = svgDoc.getDocumentElement(); // get the root element (the svg element)

       var use = svgDoc.createElementNS(svgNS, "use");
       use.setAttributeNS(null, "id", "ZZ");
       use.setAttributeNS(svgXLink, "xlink:href", "#XX");
       svgRoot.appendChild(use);
    }

(it is described in the batik FAQ)

thanks

Marcel

> 
> In the <defs> section i have defined a rectangle
> from which i want to create many instances with Javascript,
> but nothing is displayed.
> Showing the <def> directly with
> 
>   <use id="ZZ" xlink:href="#XX"/>
> 
> works fine.
> Here is the failing code:
> 
> ------------------------------------------
> <?xml version="1.0" standalone="no"?>
> <!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.0//EN"
> "http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd">
> 
> <svg xmlns="http://www.w3.org/2000/svg" 
> xmlns:xlink="http://www.w3.org/1999/xlink"
>      width="800" height="500" viewBox="0 0 800 500"
>      onload="doInit(evt)">
> 
> <defs>
>    <script type="text/ecmascript">
>    <![CDATA[
>    function doInit(evt) {
>       var svgDoc = evt.target.ownerDocument;
>       var svgTag = svgDoc.getFirstChild();
>       var use = svgDoc.createElement("use");
>       use.setAttribute("id", "ZZ");
>       use.setAttributeNS("http://www.w3.org/1999/xlink", "href", "#XX");
>       svgTag.appendChild(use);
> 
>       // test:
>       var el = svgDoc.getElementById("ZZ");
>       alert("elem=" + use.getAttribute("id"));
>       alert("elem=" + use.getAttribute("href"));
>    }
>   ]]>
>   </script>
> 
>   <rect id="XX" x="10" y="10" width="20" height="100" style="fill:blue"/>
> </defs>
> 
>     <!-- use id="ZZ" xlink:href="#XX"/ -->
> 
> </svg>
> ---------------------------------------------
> 
> Is this a bug in batik or do i make a mistake?
> 
> thanks for some help
> 
> Marcel
> 
> 
> 


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