Tooltip in the Column Header of a Primefaces Datatable - jsf

Question

In an application based on JSF 2.1 and Primefaces 6.0, I am trying to add a tooltip to the header of a datatable.
In my current solution, the tooltip appears only when pointing the mouse precisely on the text title ("Projekttyp"). I need the tooltip to appear whenever the mouse pointer is in the column header. Unfortunately, it is not possible to assign an id to the facet header.
I understand that the global tooltip as described here Primefaces Showcase Tooltip can only be used in higher Versions of JSF (JSF 2.2).
Here is my code:
<p:column sortBy="#{d.auftraggeber.typ}" filterBy="#{d.auftraggeber.typ}" field="auftraggeber.typ"
filterFunction="#{filterController.filterByString}" filterable="true" sortable="true"
width="6%" styleClass="#{Constants.STRING_COL_STYLE_CLASS}">
<f:facet name="filter">
<p:inputText onkeyup="clearTimeout(window.customFilterDelay);window.customFilterDelay=setTimeout(function() {PrimeFaces.getWidgetById('#{component.parent.parent.clientId}').filter();},1500)"
value="#{sucheForm.filter.typFilter}"
tabindex="1"
styleClass="input-filter #{Constants.NO_DIRTY_CHECK_STYLE_CLASS}">
<p:ajax event="keyup" update="#(.updateableFromTableFilter)" delay="1500" />
</p:inputText>
</f:facet>
<f:facet name="header">
<h:outputText id="typColumntitle" title="Projekttyp" value="Projekttyp"/>
<p:tooltip id="typTooltip"
for="typColumntitle"
rendered="true"
myPosition="left bottom" atPosition="right bottom"
hideDelay="500">
<p:scrollPanel style="width: 300px;height:200px">
<p:dataTable id="projektTypTable" var="typ" value="#{projekttypListProducer.typAndDescList}">
<p:column headerText="Projekttyp" width="30%">
<h:outputText value="#{typ.inhalt}"/>
</p:column>
<p:column headerText="Bemerkung" width="70%">
<h:outputText value="#{typ.bemerkung}"/>
</p:column>
</p:dataTable>
</p:scrollPanel>
</p:tooltip>
</f:facet>
<h:outputText value="#{d.auftraggeber.typ}"/>
</p:column>

Answer 1

Add the f:facet tag like the above and it will work fine (I mean tooltip value will be displayed); if you hover your mouse anywhere inside the column header.
Even outside the text in the column header.
<p:column id= "keyColumnId">
<f:facet name="header">
<h:outputText value="YOUR COLUMN HEADER" />
<p:tooltip value="TOOLTIP VALUE TO SHOW" for="keyColumnId" />
</f:facet>
</p:column>

Answer 2

PrimeFaces supports 'jquery' selectors in the for attribute of the p:tooltip. You effectively need to select the 'parent' of the element with id typColumntitle, so this will (most likely) work.
<p:tooltip id="typTooltip"
for="#(#typColumntitle:parent)"
rendered="true"
myPosition="left bottom" atPosition="right bottom"
hideDelay="500">

Answer 3

Solving this problem turned out to be easy in the end. I just had to assign an id to the column <p:column id="columnwithtooltip" and adjust the for="columnwithtooltip" in the tooltip accordingly:
<p:column id="projekttypColumn" sortBy="#{d.auftraggeber.typ}" filterBy="#{d.auftraggeber.typ}" field="auftraggeber.typ"
filterFunction="#{filterController.filterByString}" filterable="true" sortable="true"
width="6%" styleClass="#{Constants.STRING_COL_STYLE_CLASS}">
<f:facet name="filter">
<p:inputText onkeyup="clearTimeout(window.customFilterDelay);window.customFilterDelay=setTimeout(function() {PrimeFaces.getWidgetById('#{component.parent.parent.clientId}').filter();},1500)"
value="#{sucheForm.filter.typFilter}"
tabindex="1"
styleClass="input-filter #{Constants.NO_DIRTY_CHECK_STYLE_CLASS}">
<p:ajax event="keyup" update="#(.updateableFromTableFilter)" delay="1500" />
</p:inputText>
</f:facet>
<f:facet name="header">
<h:outputText id="typColumntitle" title="Projekttyp" value="Projekttyp"/>
<p:tooltip id="typTooltip"
for="projekttypColumn"
rendered="true"
myPosition="left bottom" atPosition="right bottom"
hideDelay="500">
<p:scrollPanel style="width: 300px;height:200px">
<p:dataTable id="projektTypTable" var="typ" value="#{projekttypListProducer.typAndDescList}">
<p:column headerText="Projekttyp" width="30%">
<h:outputText value="#{typ.inhalt}"/>
</p:column>
<p:column headerText="Bemerkung" width="70%">
<h:outputText value="#{typ.bemerkung}"/>
</p:column>
</p:dataTable>
</p:scrollPanel>
</p:tooltip>
</f:facet>
<h:outputText value="#{d.auftraggeber.typ}"/>
</p:column>