RE: Scripts within nested SVGs being ignored.

["jeff.cressman" <je...@gmail.com>]

Hi Thomas,

I am writing similar code where I want to add svg elements containing script
elements to a previously loaded document. I don't quite understand the
workaround. If you could explain it in a little more detail I would be
grateful. Are you suggesting that the new subtree gets searched from a
script loaded with the original document or from the java code that adds the
subtree? Once the script elements are identified I don't understand what is
meant by "eval"ing them. If my script element is <script
xlink:href="circle.js"/> then do I eval the whole element or just the
xlink:href="circle.js" portion?

Thanks,
Jeff Cressman


thomas.deweese wrote:
> 
> 
>    BTW you can probably fix this in your script by searching the 
> 'too be added' subtree for script elements (getElementsByTagNameNS)
> and simply "eval"ing the text content of them (I say simply but
> the text content is likely split across multiple text nodes).
> Anyway it's a potential workaround if you need one.
> 
> 

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RE: Scripts within nested SVGs being ignored.

["jeff.cressman" <je...@gmail.com>]

Hi,

Apologies, I didn't see this post earlier:
http://www.nabble.com/Reg%3A-Accessing-SVG-DOM-tree-using-Java-to867651.html#a879225.
The example given there clarified for me what Thomas meant by evaling the
text content of script nodes. For the workaround I wasn't getting that the
script nodes actually contain the script. I'm working with script elements
that link to javascript files and wasn't understanding how you would
evaluate a link.

I ended up using the approach given at
http://mcc.id.au/2007/09/batik-course/, section 45 "Evaluating Script from
Java", in the following way. Note: when I used getElementsByTagNameNS as
suggested in the workaround it didn't return any elements.

                        // After adding a subtree to the main svg document
any scripts
                        // in the subtree are evaluated
                        NodeList nScript =
doc.getElementsByTagName("script");
                        FileReader scriptReader;
                        String path;
                        for (int i = 0; i < nScript.getLength(); i++) {
                            // skip the first one as it's the script from
the original svg doc
                            if (i > 0) {
                                try {
                                    path = ((Element)
nScript.item(i)).getAttributeNS("http://www.w3.org/1999/xlink", "href");
                                    // strip "file:"
                                    path = path.substring(5);
                                    scriptReader = new FileReader(path);
                                    canvas.evaluateInES(scriptReader); //
the extended JSVGCanvas
                                } catch (Exception ex) {
                                    ex.printStackTrace();
                                }
                            }
                        }

Regards,
Jeff Cressman


jeff.cressman wrote:
> 
> Hi Thomas,
> 
> I am writing similar code where I want to add svg elements containing
> script elements to a previously loaded document. I don't quite understand
> the workaround. If you could explain it in a little more detail I would be
> grateful. Are you suggesting that the new subtree gets searched from a
> script loaded with the original document or from the java code that adds
> the subtree? Once the script elements are identified I don't understand
> what is meant by "eval"ing them. If my script element is <script
> xlink:href="circle.js"/> then do I eval the whole element or just the
> xlink:href="circle.js" portion?
> 
> Thanks,
> Jeff Cressman
> 
> 
> thomas.deweese wrote:
>> 
>> 
>>    BTW you can probably fix this in your script by searching the 
>> 'too be added' subtree for script elements (getElementsByTagNameNS)
>> and simply "eval"ing the text content of them (I say simply but
>> the text content is likely split across multiple text nodes).
>> Anyway it's a potential workaround if you need one.
>> 
>> 
> 
> 

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