[richfaces-issues] [JBoss JIRA] (RF-12976) rich:tabPanel using @binding: switching tabs invokes itemChangeListener multiple times

[Lukáš Fryč (JIRA)]

    [ https://issues.jboss.org/browse/RF-12976?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12773768#comment-12773768 ] 

Lukáš Fryč commented on RF-12976:
---------------------------------

The issue is in that {{TogglePanelTagHandler}} calls [{{addItemChangeListener}}|https://github.com/richfaces/richfaces5/blob/master/framework/src/main/java/org/richfaces/ui/toggle/TogglePanelTagHandler.java#L73] method for each build of a view.

It adds {{FacesListener}} to the [{{AttachedObjectListerHolder}}|http://grepcode.com/file/repo1.maven.org/maven2/org.glassfish/javax.faces/2.1.19/javax/faces/component/UIComponentBase.java#892] in {{UIComponentBase}}.

Since the bound UITabPanel is stored in a view scope, the list of listeners grows with each subsequent request for a same view.


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This issue is larger and each of our change listeners should be checked for a same problem.
                
> rich:tabPanel using @binding: switching tabs invokes itemChangeListener multiple times
> --------------------------------------------------------------------------------------
>
>                 Key: RF-12976
>                 URL: https://issues.jboss.org/browse/RF-12976
>             Project: RichFaces
>          Issue Type: Bug
>      Security Level: Public(Everyone can see) 
>          Components: component-panels-layout-themes
>    Affects Versions: 4.3.2
>         Environment: Apache Tomcat 7.0.34
> Java(TM) SE Runtime Environment 1.7.0_21-b11 @ Linux
> Firefox 18.0, IE9, IE10, Chrome 24
> Metamer 4.3.2.20130510-Final
>            Reporter: Jiří Štefek
>              Labels: regression
>             Fix For: 4.3.2
>
>         Attachments: TabPanelBindingTest-4.3.0.Final.war
>
>
> Regression against RichFaces 4.3.1.Final. (not working in 4.3.2.CR1|Final)
> See steps to reproduce.

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