Eu tenho um componente composto (collapsiblePanel). O componente usa o bean "recolhível" para fornecer a função de alternância. Quando eu uso o mesmo componente várias vezes em uma página, cada instância do componente é vinculada à mesma instância do bean. Como posso obter algo como um bean com escopo de componente?

collapsibleTemp.xhtml:

<cc:interface>
    <cc:attribute name="model" required="true">
        <cc:attribute name="collapsed" required="true" />
        <cc:attribute name="toggle" required="true"
            method-signature="java.lang.String f()" />
    </cc:attribute>
    <cc:actionSource name="toggle" />
    <cc:facet name="header" />
    <cc:facet name="body" />
</cc:interface>
<cc:implementation>
    <h:panelGroup layout="block" styleClass="collapsiblePanel-header">
        <h:commandButton id="toggle" action="#{cc.attrs.model.toggle}"
            styleClass="collapsiblePanel-img"
            image="#{cc.attrs.model.collapsed ? '/resources/images/plus.png' : '/resources/images/minus.png'}" />
        <cc:renderFacet name="header" />
    </h:panelGroup>
    <h:panelGroup layout="block" rendered="#{!cc.attrs.model.collapsed}">
        <cc:insertChildren />
        <cc:renderFacet name="body"></cc:renderFacet>
    </h:panelGroup>
    <h:outputStylesheet library="css" name="components.css" />
</cc:implementation>

O feijão de apoio:

@ManagedBean
@ViewScoped
public class Collapsible {

    private boolean collapsed = false;

    public boolean isCollapsed() {
        return collapsed;
    }

    public void setCollapsed(boolean collapsed) {
        this.collapsed = collapsed;
    }

    public String toggle() {
        collapsed = !collapsed;
        return null;
    }

}

Utilizando a Página

<h:form id="someid">
    <jl:collapsibletemp id="collapsiblePanel1" model="#{collapsible}">
        <f:facet name="header">
            <h3>
                <h:outputText value="Collapsible information" />
            </h3>
        </f:facet>
        <f:facet name="body">
            <h:outputText value="do something....." />
        </f:facet>
        <p />
    </jl:collapsibletemp>

    <jl:collapsibletemp id="collapsiblePanel2" model="#{collapsible}">
        <f:facet name="header">
            <h3>
                <h:outputText value="Collapsible information" />
            </h3>
        </f:facet>
        <f:facet name="body">
            <h:outputText value="do some tabbing" />
        </f:facet>
        <p />
    </jl:collapsibletemp>

    <jl:collapsibletemp id="collapsiblePanel3" model="#{collapsible}">
        <f:facet name="header">
            <h3>
                <h:outputText value="Collapsible information" />
            </h3>
        </f:facet>
        <f:facet name="body">
            <h:outputText value="notice board" />
        </f:facet>
        <p />
    </jl:collapsibletemp>
</h:form>