factorize the isLiveEditable(documentModel) or isLiveEditable(documentRef) logic into a JSF function or a seam component

The current extended_file_widget.xhtml template looks like this

<nxu:methodResult name="immutable"
value="#

{currentDocument.hasFacet('Immutable')}

">
<nxu:methodResult name="onlineEditable"
value="#

{conversionActions.isFileOnlineEditable(widget.fieldDefinitions[0].propertyName)}

">
<nxu:methodResult name="isLiveEditable"
value="#

{lockActions.isCurrentDocumentLiveEditable()}

">
<h:panelGroup
rendered="#

{!immutable and onlineEditable and isLiveEditable}

">
<h:outputText value=" | " />

<h:commandLink action="#

{FileManageWS.edit}

"
rendered="#

{documentActions.writeRight}

">
<f:param name="fileFieldFullName"
value="#

{widget.fieldDefinitions[0].propertyName}

" />
<f:param name="filename" value="#

{field_1}

" />
<f:param name="filenameFieldFullName"
value="#

{widget.fieldDefinitions[1].propertyName}

" />
<h:outputText value="#

{messages['label.document.directEdit']}" />
</h:commandLink>

</h:panelGroup>
</nxu:methodResult>
</nxu:methodResult>
</nxu:methodResult>

The command links itself should upgraded to something like:

<h:outputLink
value="#{nxd:liveEditUrl(changeableDocument, widget.fieldDefinitions[0].schemaName, widget.fieldDefinitions[0].fieldName, widget.fieldDefinitions[1].fieldName)}"
rendered="#{editable}">
<h:outputText value="#{messages['label.document.directEdit']}

" />
</h:outputLink>

However the rendering condition is currently dependent on several seam action listeners. This should be factorized into a single seam component call that takes the document model and the property name as parameters (do not hardcode the check on currentDocument only).