[Zerokode-forum-log] [zerokode - Help] RE: Unable to drag to canvas, save

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By: snijim

Robbie, 

Thanks for the response - I download ZK 3.0RC and overlaid the jars in the ZeroKode
WEB-INF/lib directory. However, when I go to save, I still get the
UnsupportedOperationException.

In addition, I'm trying to follow the "Painting with Zero Kode.doc" document
that is bundled in the ZeroKode.war.  When I attempt to add an image to the
vbox off the root window, I get an out of bounds exception:

Oct 17, 2007 2:18:47 PM org.zkoss.zk.ui.impl.UiEngineImpl execUpdate:606
SEVERE: 
org.zkoss.zk.ui.UiException: org.zkoss.web.servlet.ServletException: Unable
to evaluate an EL expression: ${u:getBoxChildAttrs(child)}
	at org.zkoss.zk.ui.http.ExecutionImpl.include(ExecutionImpl.java:134)
	at org.zkoss.zk.ui.AbstractComponent.redraw(AbstractComponent.java:896)
	at org.zkoss.zk.ui.impl.UiVisualizer.redraw(UiVisualizer.java:884)
	at org.zkoss.zk.ui.impl.UiVisualizer.getResponses(UiVisualizer.java:532)
	at org.zkoss.zk.ui.impl.UiEngineImpl.execUpdate(UiEngineImpl.java:601)
	at org.zkoss.zk.au.http.DHtmlUpdateServlet.process(DHtmlUpdateServlet.java:220)
	at org.zkoss.zk.au.http.DHtmlUpdateServlet.doGet(DHtmlUpdateServlet.java:122)
	at org.zkoss.zk.au.http.DHtmlUpdateServlet.doPost(DHtmlUpdateServlet.java:130)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Application
FilterChain.java:269)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterCh
ain.java:188)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.ja
va:213)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.ja
va:174)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127
)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117
)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java
:108)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:151)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:874)
	at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processC
onnection(Http11BaseProtocol.java:665)
	at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.jav
a:528)
	at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWo
rkerThread.java:81)
	at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.jav
a:689)
	at java.lang.Thread.run(Unknown Source)
Caused by: org.zkoss.web.servlet.ServletException: Unable to evaluate an EL
expression: ${u:getBoxChildAttrs(child)}
	at org.zkoss.web.servlet.dsp.impl.ELNode.interpret(ELNode.java:51)
	at org.zkoss.web.servlet.dsp.impl.ActionNode.renderFragment(ActionNode.java:96)
	at org.zkoss.web.servlet.dsp.impl.ActionContextImpl.renderFragment(ActionContex
tImpl.java:92)
	at org.zkoss.web.servlet.dsp.action.ForEach.renderWith(ForEach.java:211)
	at org.zkoss.web.servlet.dsp.action.ForEach.render(ForEach.java:158)
	at org.zkoss.web.servlet.dsp.impl.ActionNode.interpret(ActionNode.java:70)
	at org.zkoss.web.servlet.dsp.impl.RootNode.interpret(RootNode.java:51)
	at org.zkoss.web.servlet.dsp.impl.RootNode.interpret(RootNode.java:64)
	at org.zkoss.web.util.resource.ClassWebResource.web(ClassWebResource.java:193)
	at org.zkoss.web.util.resource.ClassWebResource.doGet(ClassWebResource.java:135
)
	at org.zkoss.zk.au.http.DHtmlUpdateServlet.doGet(DHtmlUpdateServlet.java:109)
	at org.zkoss.zk.au.http.DHtmlUpdateServlet.doPost(DHtmlUpdateServlet.java:130)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:710)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Application
FilterChain.java:269)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterCh
ain.java:188)
	at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.
java:691)
	at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatch
er.java:594)
	at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher
.java:505)
	at org.zkoss.web.servlet.Servlets.include(Servlets.java:440)
	at org.zkoss.zk.ui.http.ExecutionImpl.include(ExecutionImpl.java:128)
	... 23 more
Caused by: javax.servlet.jsp.el.ELException: An error occurred while evaluating
function "u:getBoxChildAttrs"
	at org.apache.commons.el.Logger.logError(Logger.java:484)
	at org.apache.commons.el.Logger.logError(Logger.java:545)
	at org.apache.commons.el.FunctionInvocation.evaluate(FunctionInvocation.java:17
4)
	at org.apache.commons.el.ExpressionEvaluatorImpl.evaluate(ExpressionEvaluatorIm
pl.java:263)
	at org.apache.commons.el.ExpressionEvaluatorImpl.evaluate(ExpressionEvaluatorIm
pl.java:190)
	at org.zkoss.el.EvaluatorImpl.evaluate(EvaluatorImpl.java:74)
	at org.zkoss.web.servlet.dsp.impl.ELNode.interpret(ELNode.java:45)
	... 43 more

I have tried to add the image to the root window, then append it as a child
to the vbox, with no success.

It seems like ZK is a really nice framework w/ a nice painting utility.  I would
like to be able to work past these initial hiccups and really start cranking
out code.

Any thoughts? 

Thanks, 
Sharif 

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