Get column value from ContextMenu of dataTable - primefaces

Question

It's easy to show the selected row value in a dialog from a p:contextMenu. However, is there an easy way to show the column value (e.g. "2:b") or to get the column index on which the right-click happend?
<p:dataTable id="dt" value="#{['a','b','c']}" var="x" selection="#{bean.x}"
widgetVar="dtv" selectionMode="single" rowKey="#{x}">
<p:column>1:#{x}</p:column>
<p:column>2:#{x}</p:column>
</p:dataTable>
<p:contextMenu for="dt">
<p:menuitem value="Show" update="di" oncomplete="PF('wv').show()" />
</p:contextMenu>
<p:dialog id="di" widgetVar="wv">X=#{bean.x}</p:dialog>
Using: PF6.0 on JavaEE 7

Answer 1

Just idea...
Xhtml
I added two <h:inputHidden/> components and JavaScript function applySelectedCell which is called before context menu is shown.
<h:form prependId="false">
<script type="text/javascript">
function applySelectedCell(event) {
var cell = $(event.target);
if (!cell.is('td')) {
cell = cell.closest('td');
}
var row = cell.closest('tr');
var selectedCell = row.children().index(cell);
$('#selectedCell').val(selectedCell);
$('#selectedHtmlValue').val(cell.text());
}
</script>
<h:inputHidden id="selectedCell" value="#{bean.selectedCell}"/>
<h:inputHidden id="selectedHtmlValue" value="#{bean.selectedHtmlValue}"/>
<p:dataTable id="dt" value="#{['a','b','c']}" var="x" selection="#{bean.x}"
widgetVar="dtv" selectionMode="single" rowKey="#{x}">
<p:column>1:<div style="background: yellow;">#{x}</div></p:column>
<p:column>2:#{x}</p:column>
</p:dataTable>
<p:contextMenu for="dt" beforeShow="applySelectedCell(event);">
<p:menuitem value="Show" update="di" oncomplete="PF('wv').show()" />
</p:contextMenu>
<p:dialog id="di" widgetVar="wv">
<div>Cell value (Bean) = #{bean.selectedBeanValue}</div>
<div>Cell value (HTML) = #{bean.selectedHtmlValue}</div>
</p:dialog>
</h:form>
Backing bean
#ViewScoped
#Named
public class Bean implements Serializable {
private String x = "a";
private Integer selectedCell;
private String selectedHtmlValue;
public String getX() {
return x;
}
public void setX(String x) {
this.x = x;
}
public Integer getSelectedCell() {
return selectedCell;
}
public void setSelectedCell(Integer selectedCell) {
this.selectedCell = selectedCell;
}
public String getSelectedHtmlValue() {
return selectedHtmlValue;
}
public void setSelectedHtmlValue(String selectedHtmlValue) {
this.selectedHtmlValue = selectedHtmlValue;
}
public String getSelectedBeanValue() {
if (selectedCell != null) {
return (selectedCell + 1) + ":" + x;
} else {
return x;
}
}
}