Render p:selectManyCheckbox with 10 columns

Question

I developed an interface JEE / JSF for some statistics. I created checkbox to select references that the user wishes to display, but the trouble is that I use to generate the checkbox Arraylist based on data from my database.

And I can not position them as I want. I wish that after 10 checkbox, others generates directly to the line etc. ..

I have this result

And i wish i could do this

MTBFBEAN

private List<String> selectedReference = new ArrayList<String>();
private List<String> listReference = new ArrayList<String>(); 
private Boolean afficher = false; // Déclaration du bool pour le rendered de
                                    // ma vue dans MTBF

@SuppressWarnings("deprecation")
public StatisticsBeanMTBF() {
    this.beginDate = new Date(2001, 00, 01);
    List<ProductConfModel> listtmp = this.moduleGlobal.getProductConfModels(2);
    for (ProductConfModel pcm : listtmp) {

        this.listReference.add(pcm.getReference());
        }
    }

public void mTBFByType() {
    this.afficher = true;
    this.listMTBF = new ArrayList<StatistiquesMTBF>();
    List<StatistiquesMTBF> suspense = this.moduleGlobal.getMTBFByType(nbHeure, nbJour, NS, DAE, beginDate, endDate);
    for (StatistiquesMTBF smtbf : suspense) {
        for (String s : this.selectedReference) {
            if (smtbf.getReference().equals(s)) {
                this.listMTBF.add(smtbf);
            }

JSF XHTML

    <h:outputText value="Date début :* " />
                    <p:calendar value="#{statisticsBeanMTBF.beginDate}"
                        navigator="true" required="true" />
                    <h:outputText value="Date fin:* " />
                    <p:calendar value="#{statisticsBeanMTBF.endDate}" navigator="true"
                        required="true" />

                </h:panelGrid>
                <h:panelGrid columns="1">
                    <h:outputText value="Selectionner votre référence : " />

                    <p:selectManyCheckbox id="grid" columns="5"
                        value="#{statisticsBeanMTBF.selectedReference}">
                        <f:selectItems value="#{statisticsBeanMTBF.listReference}" />
                        </p:selectManyCheckbox> 
                </h:panelGrid>
                <p:separator />

If anyone can help me it would be nice.

Thank you !

Answer 1

I get this outcome using:

<h:panelGroup layout="block" styleClass="selection">
    <p:selectManyCheckbox layout="pageDirection" value="#{selection.selection}">
</h:panelGroup>

and setting each <tr>:

.selection tr {
   float: left;
    width: 33%;
} 

In your case set it to 10% and outer container to width: 100%.

It looks like that: