For full graceful degradation, you can inject the Request object can
check its isXHR() method, then decide on an appropriate return value
(typically, a Block or null).
On Tue, Jun 24, 2008 at 9:24 AM, Lance Java <[EMAIL PROTECTED]> wrote:
> I have solved the issue, I think I understand what was going wrong.
> - Tapestry first draws action links as hrefs which cause a page reload for
> graceful degredation
> - Tapestry javascript magic then goes over all ajax action links and changes
> them to javascript method calls
> - I had a javascript error which stopped the tapestry javascript magic from
> hapening, thus I was seeing the graceful degredation, thus no XHR's
>
> Cheers,
> Lance.
>
> 2008/6/24 Francisco Manzano <[EMAIL PROTECTED]>:
>
>> Hi, I am inexperienced in Tapestry, but I had east problem recently:
>> You have like result a valid xhtml page? You can look for if you have
>> "scripts of tapestry" inserted at the end of the page.
>> something like this :
>> ...
>> <script src="../../assets/scriptaculous/5.0.13/prototype.js"
>> type="text/javascript"></script>
>> <script src="../../assets/scriptaculous/5.0.13/scriptaculous.js"
>> type="text/javascript"></script>
>> <script src="../../assets/scriptaculous/5.0.13/effects.js"
>> type="text/javascript"></script>
>> <script src="../../assets/tapestry/5.0.13/tapestry.js"
>> type="text/javascript"></script>
>> <script type="text/javascript">
>> <!--
>> Tapestry.DEBUG_ENABLED = true;
>> Tapestry.onDOMLoaded(function() {
>>
>> Tapestry.init({"zone":["zoneToUpdate"],"linkZone":[["theLink4","zoneToUpdate"],["theForm","zoneToUpdate"]]});
>> });
>> // -->
>> </script>
>> </body>
>> </html>
>>
>> If these scripts are not, you can have this problem., and you can solve it
>> obtaining a valid xhtml like result.
>>
>> I hope can help you
>>
>> &
>> DiPegotDeis
>>
>>
>>
>>
>> Lance Java wrote:
>>
>>> I have an actionlink that returns a block and populates a zone in my page
>>>
>>> FundGraph.tml
>>> <t:actionLink t:id="edit" zone="editZone">edit</t:actionLink>
>>>
>>> <t:block t:id="editorBlock">...</t:block>
>>>
>>> <t:zone t:id="editZone">
>>> </t:zone>
>>>
>>>
>>> FundGraph.java
>>> @Inject
>>> private Block editorBlock;
>>>
>>> @OnEvent(value="action", component="edit")
>>> protected Object onActionFromEdit() {
>>> return editorBlock;
>>> }
>>>
>>> In Firefox, this works fine. In IE, I get the following error:
>>> A component event handler method returned the value
>>> [EMAIL PROTECTED] Return type
>>> org.apache.tapestry5.internal.structure.BlockImpl can not be handled.
>>> Configured return types are java.lang.Class, java.lang.String,
>>> java.net.URL,
>>> org.apache.tapestry5.Link, org.apache.tapestry5.StreamResponse,
>>> org.apache.tapestry5.runtime.Component.
>>>
>>> I have looked at previous posts on this list and it seems that this is
>>> because request.isXHR() is false. What can I do to fix this in IE? I
>>> thought
>>> that XHR should be true in this case?
>>>
>>> I am using tapestry 5.0.13 and IE 6.0
>>>
>>> Full stack trace:
>>> %d 192408 ERROR
>>> [org.apache.tapestry5.services.TapestryModule.RequestExceptionHandler]
>>> (http-127.0.0.1-8080-2:) Processing of request failed with uncaught
>>> exception: A component event handler method returned the value
>>> [EMAIL PROTECTED] Return type
>>> org.apache.tapestry5.internal.structure.BlockImpl can not be
>>> handled. Configured return types are java.lang.Class, java.lang.String,
>>> java.net.URL, org.apache.tapestry5.Link,
>>> org.apache.tapestry5.StreamResponse,
>>> org.apache.tapestry5.runtime.Component.
>>> org.apache.tapestry5.runtime.ComponentEventException: A component event
>>> handler method returned the value
>>> [EMAIL PROTECTED] Return type
>>> org.apache.tapestry5.internal.structure.BlockImpl can not be
>>> handled. Configured return types are java.lang.Class, java.lang.String,
>>> java.net.URL, org.apache.tapestry5.Link,
>>> org.apache.tapestry5.StreamResponse,
>>> org.apache.tapestry5.runtime.Component.
>>> [at
>>> classpath:com/bglobal/isharesnet/tapestry/components/fund/FundGraph.tml,
>>> line 2, column 44]
>>> at
>>>
>>> org.apache.tapestry5.internal.structure.ComponentPageElementImpl.triggerContextEvent(ComponentPageElementImpl.java:1042)
>>> at
>>>
>>> org.apache.tapestry5.internal.services.ComponentEventRequestHandlerImpl.handle(ComponentEventRequestHandlerImpl.java:67)
>>> at
>>>
>>> org.apache.tapestry5.internal.services.ImmediateActionRenderResponseFilter.handle(ImmediateActionRenderResponseFilter.java:42)
>>> at
>>>
>>> $ComponentEventRequestHandler_11abad25fdc.handle($ComponentEventRequestHandler_11abad25fdc.java)
>>> at
>>>
>>> org.apache.tapestry5.internal.services.AjaxFilter.handle(AjaxFilter.java:42)
>>> at
>>>
>>> $ComponentEventRequestHandler_11abad25fdc.handle($ComponentEventRequestHandler_11abad25fdc.java)
>>> at
>>>
>>> org.apache.tapestry5.services.TapestryModule$37.handle(TapestryModule.java:1987)
>>> at
>>>
>>> $ComponentEventRequestHandler_11abad25fdc.handle($ComponentEventRequestHandler_11abad25fdc.java)
>>> at
>>>
>>> $ComponentEventRequestHandler_11abad25f81.handle($ComponentEventRequestHandler_11abad25f81.java)
>>> at
>>>
>>> org.apache.tapestry5.internal.services.ComponentEventDispatcher.dispatch(ComponentEventDispatcher.java:135)
>>> at $Dispatcher_11abad25f84.dispatch($Dispatcher_11abad25f84.java)
>>> at $Dispatcher_11abad25f76.dispatch($Dispatcher_11abad25f76.java)
>>> at
>>>
>>> org.apache.tapestry5.services.TapestryModule$12.service(TapestryModule.java:938)
>>> at
>>>
>>> org.apache.tapestry5.internal.services.LocalizationFilter.service(LocalizationFilter.java:42)
>>> at $RequestHandler_11abad25f77.service($RequestHandler_11abad25f77.java)
>>> at
>>>
>>> org.apache.tapestry5.services.TapestryModule$2.service(TapestryModule.java:586)
>>> at $RequestHandler_11abad25f77.service($RequestHandler_11abad25f77.java)
>>> at
>>>
>>> org.apache.tapestry5.internal.services.RequestErrorFilter.service(RequestErrorFilter.java:26)
>>> at $RequestHandler_11abad25f77.service($RequestHandler_11abad25f77.java)
>>> at
>>>
>>> org.apache.tapestry5.internal.services.StaticFilesFilter.service(StaticFilesFilter.java:79)
>>> at $RequestHandler_11abad25f77.service($RequestHandler_11abad25f77.java)
>>> at
>>>
>>> org.apache.tapestry5.internal.services.CheckForUpdatesFilter$2.invoke(CheckForUpdatesFilter.java:93)
>>> at
>>>
>>> org.apache.tapestry5.internal.services.CheckForUpdatesFilter$2.invoke(CheckForUpdatesFilter.java:84)
>>> at
>>>
>>> org.apache.tapestry5.ioc.internal.util.ConcurrentBarrier.withRead(ConcurrentBarrier.java:75)
>>> at
>>>
>>> org.apache.tapestry5.internal.services.CheckForUpdatesFilter.service(CheckForUpdatesFilter.java:106)
>>> at $RequestHandler_11abad25f77.service($RequestHandler_11abad25f77.java)
>>> at $RequestHandler_11abad25f6f.service($RequestHandler_11abad25f6f.java)
>>> at
>>>
>>> org.apache.tapestry5.services.TapestryModule$11.service(TapestryModule.java:918)
>>> at
>>>
>>> org.apache.tapestry5.internal.services.IgnoredPathsFilter.service(IgnoredPathsFilter.java:62)
>>> at
>>>
>>> $HttpServletRequestFilter_11abad25f6e.service($HttpServletRequestFilter_11abad25f6e.java)
>>> at
>>>
>>> $HttpServletRequestHandler_11abad25f70.service($HttpServletRequestHandler_11abad25f70.java)
>>> at
>>>
>>> $HttpServletRequestHandler_11abad25f6d.service($HttpServletRequestHandler_11abad25f6d.java)
>>> at org.apache.tapestry5.TapestryFilter.doFilter(TapestryFilter.java:168)
>>> at
>>>
>>> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
>>> at
>>>
>>> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
>>> at
>>>
>>> org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
>>> at
>>>
>>> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
>>> at
>>>
>>> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
>>> at
>>>
>>> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
>>> at
>>>
>>> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
>>> at
>>>
>>> org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:179)
>>> at
>>>
>>> org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84)
>>> at
>>>
>>> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
>>> at
>>>
>>> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
>>> at
>>>
>>> org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157)
>>> at
>>>
>>> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
>>> at
>>>
>>> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:262)
>>> at
>>> org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
>>> at
>>>
>>> org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
>>> at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:446)
>>> at java.lang.Thread.run(Thread.java:619)
>>> Caused by: java.lang.RuntimeException: A component event handler method
>>> returned the value
>>> [EMAIL PROTECTED] type
>>> org.apache.tapestry5.internal.structure.BlockImpl can not be
>>> handled. Configured return types are java.lang.Class, java.lang.String,
>>> java.net.URL, org.apache.tapestry5.Link,
>>> org.apache.tapestry5.StreamResponse,
>>> org.apache.tapestry5.runtime.Component.
>>> at
>>>
>>> org.apache.tapestry5.internal.services.ObjectComponentEventResultProcessor.processResultValue(ObjectComponentEventResultProcessor.java:39)
>>> at
>>>
>>> $ComponentEventResultProcessor_11abad26009.processResultValue($ComponentEventResultProcessor_11abad26009.java)
>>> at
>>>
>>> $ComponentEventResultProcessor_11abad25f87.processResultValue($ComponentEventResultProcessor_11abad25f87.java)
>>> at
>>>
>>> org.apache.tapestry5.internal.services.ComponentResultProcessorWrapper.handleResult(ComponentResultProcessorWrapper.java:42)
>>> at
>>>
>>> org.apache.tapestry5.internal.structure.ComponentPageElementImpl$15.handleResult(ComponentPageElementImpl.java:1001)
>>> at
>>>
>>> org.apache.tapestry5.internal.services.EventImpl.storeResult(EventImpl.java:56)
>>> at
>>>
>>> com.bglobal.isharesnet.tapestry.components.fund.FundGraph.dispatchComponentEvent(FundGraph.java)
>>> at
>>>
>>> org.apache.tapestry5.internal.structure.ComponentPageElementImpl.dispatchEvent(ComponentPageElementImpl.java:864)
>>> at
>>>
>>> org.apache.tapestry5.internal.structure.ComponentPageElementImpl.triggerContextEvent(ComponentPageElementImpl.java:1025)
>>> ... 50 more
>>>
>>>
>>>
>>
>>
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>>
>>
>
--
Howard M. Lewis Ship
Creator Apache Tapestry and Apache HiveMind
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