Hi all.

I use RF 4.3.1 with mojarra 2.1.19.

I use extendeddatatable:

<rich:extendedDataTable keepSaved="true" 
                                    value="#{listBean.dataModel}"
                                    var="row" 
                                    rows="#{listBean.rows}" 
                                    id="listTable"
                                    selectionMode="multiple"
                                    selection="#{listBean.selection}"
                                    sortPriority="#{listBean.sortPriorities}"
                                    sortMode="single"
                                    frozenColumns="#{listBean.frozenColumns}"
                                    style="height: auto; width: auto;">
                <a4j:ajax event="selectionchange" render="selCount, processButton" onbegin="#{rich:component('blockUI')}.show();" oncomplete="#{rich:component('blockUI')}.hide();" />
                <rich:column sortBy="#{row.name}" >

                        <f:facet name="header">


                            <h:outputText value="Name" />


                        </f:facet>


                        <h:outputText value="#{row.name}" />


                 </rich:column>

...

dataModel contains many rows and build in sorting continues several seconds.

How i can block UI while this operation runs?

Richfaces have such as:

<a4j:ajax event="sort" ... /> for <rich:extendeddatatable>

?