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Binding, dynamic UIComponent treegeneration and display problem  RSS feed

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Hi all,

This is my probleme :

My page is composed by a selectManyShuttle ( trinidad ) and a PanelGrid and a commandbutton.

The selectManyShuttle allow to choose a list of language.
The PanelGrid is "empty", because it is binding to my backingBean.
It will be created at sending the form, depending on the languages chosen.

The button have an actionListener that populates a list of selected Language ( LangueProcedure class )

The problem are :

1. The getPanelLanguesEtPersonnes() is called at the first display of the form but not when the form is posted, so the "panelGrid" is not reconstructed. How can I ask 'JSF' to reconstruct the component tree?

2. How to bind a "selectOneMenu" to a element of a list ?
How can I remplace this "menu.setValueBinding("value", FacesContext.getCurrentInstance().getApplication().createValueBinding("#{selectionLanguesProcedureMB.listeLangueProcedure???}"));

Thanks a lot for you help
It is sorta covered in the JavaRanch Style Guide.
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