Hi Thomas,
I had a javascript function named "alert" which just called
alert("Helloworld");
When I called my alert js function from within java
(Interpeter.evaluate("alert()")) I got this StackOverflowError. When I
changed the name of the function to 'displayMessage' it worked. Probably
something with reserved words.
Can I pass references to custom objects to the javascript too?
You mentioned also in the previous reply that I don't need javascript to
do the dynamic updates of my rendered svg. Do you mean manipulating the
DOM tree via the updatemanager thread is the alternative way of doing
this or are there other ways?
Frederik
-----Original Message-----
From: Thomas DeWeese [mailto:[EMAIL PROTECTED]
Sent: maandag 19 juli 2004 14:45
To: Batik Users
Subject: Re: Backend driven svg application
Hi Fredrik,
Frederik Santens wrote:
> When I put alert() instead of alert I get a
It just occurred to me that it should probably really be:
'alert("Hello World")'
Can't imagine why that would cause infinite recursion, but
it might be the problem...
>
> ava.lang.StackOverflowError
> at
> org.mozilla.javascript.ImporterTopLevel.has(ImporterTopLevel.java:101)
> at
>
org.mozilla.javascript.ScriptableObject.getBase(ScriptableObject.java:15
> 83)
> at
>
org.mozilla.javascript.ScriptableObject.hasProperty(ScriptableObject.jav
> a:1443)
> at
> org.mozilla.javascript.ScriptRuntime.bind(ScriptRuntime.java:1096)
> at
> org.mozilla.javascript.ScriptRuntime.getBase(ScriptRuntime.java:1106)
> at org.mozilla.javascript.gen.c1.call(Inline <script>
> file:/G:/HomeProjects/batik/intellij/multi.svg:73:4)
> at
> org.mozilla.javascript.ScriptRuntime.call(ScriptRuntime.java:1191)
> at org.mozilla.javascript.gen.c1.call(Inline <script>
> file:/G:/HomeProjects/batik/intellij/multi.svg:73:4)
> ...
>
> Frederik
>
>
> -----Original Message-----
> From: Thomas DeWeese [mailto:[EMAIL PROTECTED]
> Sent: maandag 19 juli 2004 1:41
> To: Batik Users
> Subject: Re: Backend driven svg application
>
> Frederik Santens wrote:
>
>
>>We have a notification engine that fire events when changes occur in
>
> the
>
>>backend system. Based upon those events we would like to update the
>>JSVGCanvas in correspondence with these backend data changes. The rate
>
>
>>at which those changes occur, is every 10 seconds, so, for performance
>
>
>>reasons, we are probably not able to rerender the svg each time (with
>
> a
>
>>setDocument(…)). We also want to avoid the blinking and the loss of
>
> the
>
>>zoom status that occurs when rerendering the svg in the JSVGCanvas.
>>
>>The ideal situation for us, would be to change the svg dynamically. I
>>tried calling a script (defined in the svg) from within the java code
>>but without success.
>
>
> You should be aware that you can modify the SVG Document from
> Java directly (as long as you do it from within the UpdateManager
> Thread). The most common mistake for systems like this is to fail
> to inform the canvas that the document should be treated as dynamic.
> This is done with:
>
> svgCanvas.setDocumentState(JSVGComponent.ALWAYS_DYNAMIC).
>
>
>>UpdateManager um = svgCanvas.getUpdateManager();
>>
>>Interpreter ip =
>
> um.getBridgeContext().getInterpreter("text/ecmascript");
>
>>ScriptRun sr = new ScriptRun("alert", ip);
>
>
> This should probably be 'alert()'.
>
>
>>um.getUpdateRunnableQueue ( ).invokeLater(sr);
>>
>>What is going wrong? Or are there better approaches to tackle this
>
> problem.
>
> Does anything happen when you do this (exception etc?).
>
>
>
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