RE: JSVGCanvas does not update with modified DOM using Update Manager

Marc,

I think you are using svg name space as the default name
space in the
SVG document you are editing. Well I was doing that and when
I added
some new elements using DOM methods the output was a right
SVG (XML
document) but batik didn't recognize the new tags, so I
defined the
svg name espace: xsl:svgdcs in the document.

xmlns:svgdcs="http://www.w3.org/20
00/svg"

set the name space in the java application:

xPath.setNamespaceContext(new
NamespaceContextProvider("svgdcs",SVG_NS));

and work with the namespace elements in the rest of the
code:

public void changeLocation(String nameLayer,XPath
xPath,AbstractDocumentFragment svgFragment) throws
XPathExpressionException{
	Node position=(Node)
xPath.evaluate("//svgdcs:g[id='"+nameLayer+"']",svgFragment,XPath
Constants.NODE);
	position.getAttributes().getNamedItem("transform"
).setNodeValue("translate("+x+","+y+&quo
t;)");
}


Best Regards

Abraham


On Oct 31, 2007 6:52 PM, Marc-Wayne M. Formales
<mformalesmsn.com> wrote:
>
>  Abraham,
>
>  Thanks for your input.  The DOM Modification flow is
basically:
>
>  1.  create Element from the SVG DOM object and set
attributes
>  2.  navigate DOM to find specific Node
>  3.  clone Node
>  4.  navigate cloned Node and append Element to the
cloned Node
>  5.  replace Node with cloned Node in Update Manager
>
>  I verified that the cloned Node has the appropriate
namespace, are you
> suggesting that I need to declare it from the Element? 
And if yes, how?
>
>  Here are some snippets of the code:
>
>     //create Element from the SVG Document
>     Element animate =
diagramSVG.createElement("animateColor"); //where
> diagramSVG is Document type
>     //set attributes
>     animate.setAttribute( ...);
>       ...
>
>    //Navigate DOM to find element to append to
>      ...
>    Node aLink = ... ;
>    Node animatedALink = origNode.cloneNode(true);
>    //Navigate clonedNode and then append
"animate" to a child of the cloned
> Node
>      ...
>     (child of
animatedALink).appendChild((Node)animate);
>
>
>    //UpdateManager code
>
>
>  Regards,
>
> Marc
>
> > Date: Wed, 31 Oct 2007 14:14:29 +0000
> > From: abraham.rdgzgmail.com
> > To: batik-usersxmlgraphics.apache.org;
mformaleshotmail.com
> > Subject: Re: JSVGCanvas does not update with
modified DOM using Update
> Manager
>
>
> >
> > Hi Marc,
> >
> > You don't say how you are updating the SVGDOM, but
I have a similar
> > problem using Document Fragments. My XML file was
right and worked in
> > Opera browser but not in JSVGCanvas. The solution
I came across was to
> > declare the svg name space in the document (i.e
xmlns:svg ...)and
> > use it when creating the new elements (i.e
svg:rect), so JSVGCanvas
> > will understand that the new elements were SVG
elements and not any
> > other XML flavor.
> >
> >
> > Hope it will helps
> >
> >
> > Abraham
> >
> > On Oct 24, 2007 7:00 PM, Marc-Wayne M. Formales
<mformalesmsn.com> wrote:
> > >
> > > I'm fairly new to Swing/Batik/SVG so please
bear with me.
> > >
> > > I have a JApplet that loads an SVG via
JSVGCanvas.setDocument(xmlDoc).
> If
> > > a user clicks on a certain part of the
document (any <a> tag), then I
> have
> > > some code that will animate that node and
replace it in the document
> object.
> > > I am doing this in the update manager, which
does run in the
> gvtRendering
> > > event, but the UI is not updated with the
changes I made. I know that
> the
> > > DOM object is correct because if I write that
to the file system, the
> > > changes are there. Is there something that
I'm missing?
> > >
> > > Here is a snippet from the OnClickAction
method:
> > >
> > >
> > > NodeList aLinks =
diagramSVG.getElementsByTagName("a");
> > > for (int i . . . ) {
> > > final Node aLink = aLinks.item(i);
> > > .....
> > > Some code to find the element that was
clicked on
> > > clone the element
> > > append an animate node to the element
> > > .....
> > > }
> > >
> > > UpdateManager um =
BatikEWD.diaCanvas.getUpdateManager();
> > > um.getUpdateRunnableQueue().invokeLater(new
Runnable() {
> > > public void run() {
> > > System.out.println("connID: " +
connID);
> > >
diagramSVG.getDocumentElement().replaceChild(animatedALink,
aLink);
> > > //where animatedALink is the modified
> > > canvas.setDocument(diagramSVG);
> > > canvas.updateUI(); //I've tried repaint too
but nothing seems to
> > > work
> > > panel.updateUI(); //I've tried repaint too
but nothing seems to
> > > work
> > > }
> > > });
> > >
> > >
> > > Regards,
> > >
> > > Marc
> > >
> >
> >
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>
>

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Hi,

On Nov 6, 2007 8:48 AM, Marc-Wayne M. Formales
<mformalesmsn.com> wrote:
>  I modified my code to use the namespace-aware methods
wherever it is
> applicable but the canvas is still not updating.   My
JSVGCanvas is in a
> JTabbedPane, could this have anything to do with the
updates not being seen
> (like perhaps making a JTabbedPane dynamic or
something)?

Did you set the JSVGCanvas to be dynamic eg:
svgCanvas.setDocumentState(JSVGCanvas.ALWAYS_DYNAMIC)

>  Also, in regards to being namespace aware:
>
>  NodeList aLinks =
document.getElementsByTagNameNS(svgNS, "a");
>  Node aLink = aLinks.item(0); <- Namespace aware?
>  NamedNodeMap aLinkAtts = aLink.getAttributes(); <-
Namespace aware?

Yes, it is namespace aware, because the first line querying
the aLinks
using namespace aware, so the result object is already name
aware.
Note: when there is a namespace aware, use the namespace
aware
methods, if there is none, no choice, just assume it is
namespace
aware.

Cheers
Tonny Kohar
-- 
Citra FX Photo Filter
imagine, design, create ...
http://www.kiyut.com

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