Stuart McMahon wrote:
Hi,
How do I terminate javascript running in an SVG document?
I have 2 SVG documents which both run infinite loop javascript programs
(timers for clocks).
I display them using JSVGCanvas and they both display and behave correctly.
However, when I switch between them, I wish to terminate the script of the
current document before loading the next document, but I get an Exception...
java.lang.IllegalStateException: Timer already cancelled.
at java.util.Timer.sched(Timer.java:312)
at java.util.Timer.schedule(Timer.java:128)
at org.apache.batik.bridge.ScriptingEnvironment$Window.setTimeout(Unknown
Source)
at
org.apache.batik.script.rhino.WindowWrapper.jsFunction_setTimeout(Unknown
Source) at inv2.invoke()
(I have listed the FULL EXCEPTION at the end)
Perhaps I am terminating the scripts incorrectly.
At present I do this......
UpdateManager updateManager = getUpdateManager();
if (updateManager != null)
{
ScriptingEnvironment se = updateManager.getScriptingEnvironment();
if (se != null)
{
se.interrupt();
}
}
How should a javascript be terminated?
I believe that interrupting the UpdateManager will take
care of this. The problem you are likely encountering
is that you are interrupting the script engine asynchronously
you should at the very least do this in the update manager
thread - to ensure script is not currently running.
thanks,
Stuart McMahon
FULL EXCEPTION .....
java.lang.IllegalStateException: Timer already cancelled.
at java.util.Timer.sched(Timer.java:312)
at java.util.Timer.schedule(Timer.java:128)
at
org.apache.batik.bridge.ScriptingEnvironment$Window.setTimeout(Unknown
Source)
at
org.apache.batik.script.rhino.WindowWrapper.jsFunction_setTimeout(Unknown
Source)
at inv2.invoke()
at org.mozilla.javascript.FunctionObject.doInvoke(Unknown Source)
at org.mozilla.javascript.FunctionObject.callVarargs(Unknown Source)
at org.mozilla.javascript.FunctionObject.call(Unknown Source)
at org.mozilla.javascript.ScriptRuntime.call(Unknown Source)
at org.mozilla.javascript.gen.c19.call(Inline Script:18)
at org.mozilla.javascript.ScriptRuntime.call(Unknown Source)
at org.mozilla.javascript.gen.c18.call(Inline Script:8)
at org.mozilla.javascript.optimizer.OptRuntime.callSimple(Unknown
Source)
at org.mozilla.javascript.gen.c23.call(<SVG>:1)
at org.mozilla.javascript.gen.c23.exec(<SVG>)
at org.mozilla.javascript.Context.evaluateReader(Unknown Source)
at org.apache.batik.script.rhino.RhinoInterpreter.evaluate(Unknown
Source)
at org.apache.batik.script.rhino.RhinoInterpreter.evaluate(Unknown
Source)
at
org.apache.batik.bridge.BaseScriptingEnvironment$1.handleEvent(Unknown
Source)
at org.apache.batik.dom.events.EventSupport.fireEventListeners(Unknown
Source)
at org.apache.batik.dom.events.EventSupport.dispatchEvent(Unknown
Source)
at org.apache.batik.dom.AbstractNode.dispatchEvent(Unknown Source)
at
org.apache.batik.bridge.BaseScriptingEnvironment.dispatchSVGLoad(Unknown
Source)
at
org.apache.batik.bridge.BaseScriptingEnvironment.dispatchSVGLoad(Unknown
Source)
at
org.apache.batik.bridge.BaseScriptingEnvironment.dispatchSVGLoad(Unknown
Source)
at
org.apache.batik.bridge.BaseScriptingEnvironment.dispatchSVGLoadEvent(Unknow
n Source)
at org.apache.batik.bridge.UpdateManager.dispatchSVGLoadEvent(Unknown
Source)
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