[richfaces-issues] [JBoss JIRA] (RF-12060) element is null message when closing tab from an event click

[Jean ANDRE (JIRA)]

    [ https://issues.jboss.org/browse/RF-12060?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12678626#comment-12678626 ] 

Jean ANDRE commented on RF-12060:
---------------------------------

Hello Brian,

Based on RF-12038, is it possible to add a check for null (NPE) before calling if(!element.name) to see if the case can be resolved like this? - Could you please try it?. Thank you very much and let me know your decision.
                
> element is null message when closing tab from an event click
> ------------------------------------------------------------
>
>                 Key: RF-12060
>                 URL: https://issues.jboss.org/browse/RF-12060
>             Project: RichFaces
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>    Affects Versions: 4.2.0.Final
>         Environment: Websphere 8.0.0.2 - RAD 8 - JSF Mojorra 2.1.6 - Spring 3.0.6 Final - Firefox 10.0.2 - Windows 7 (6.1 sp1) - AspectJ 1.6.12 / AJDT - RichFaces 4.2.0 Final - Hibernate Validator 4.2.0 Final 
>            Reporter: Jean ANDRE
>             Fix For: 4.Future
>
>         Attachments: NestedWeb_RF-12060.zip
>
>
> There is a link to RF-11950.
> We got the message "element is null" when we send a click event for closing a tab. To retrieve the id of the close button (an image), we use the function getElementById (because of RF-11950). The click function calls a javascript function declared by a4j:jsFunction (see index.hxtml file - close task).
> This is the only information we have from firebug. When we close the tab directly by clicking on the close button/image, it works perfectly.
> *Note :* Moreover, there is also a strange behavior related to generated id on close button/image. When we specified a fix id on the h:graphicImage, the first id is correct but there is no id on other close button/image from other tabs!???. Having a fix id should trigger a duplicate ID but as the ids are not generated on other tabs, it does not.
> {code}
> <f:facet name="header">
>    &#160;<h:outputText value="#{msg[task.uiActivity.headerKey]}"
>                        title="#{msg[task.uiActivity.headerKey]}" />
>     &#160;<h:graphicImage id="closeTask" value="/images/closeButton.png"
>                   styleClass="closeButton"
>                      onclick="closeTask('#{task.id}');event.stopPropagation();" />
> </f:facet>
> <f:subview id="#{task.id}-subview">
>    <ui:include src="#{task.uiActivity.xhtmlFile}" />
> </f:subview>
> {code}

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