tobago-example/tobago-example-demo/src/main/webapp/content/20-component/080-sheet/60-multiheader/Sheet_Multi_Header.xhtml

<?xml version="1.0" encoding="UTF-8"?>

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<ui:composition template="/main.xhtml"
                xmlns="http://www.w3.org/1999/xhtml"
                xmlns:tc="http://myfaces.apache.org/tobago/component"
                xmlns:ui="http://xmlns.jcp.org/jsf/facelets"
                xmlns:f="http://xmlns.jcp.org/jsf/core">

  <p>For more complex headers, which can span over columns and/or rows use a
    <code class="language-markup">&lt;f:facet name="header"></code>in the sheet.
    The facet could be filled with <code class="language-markup">&lt;tc:out/></code> tags
    to set the names of the header.
    Such an output field tag may also contain
    <code class="language-markup">&lt;tc:gridLayoutConstraint columnSpan="..."/></code>
    or
    <code class="language-markup">&lt;tc:gridLayoutConstraint rowSpan="..."/></code>
    to set a span over columns or rows.</p>
  <p>Tag Library Documentation:
    <tc:link label="&lt;tc:sheet/>" image="#{request.contextPath}/image/feather-leaf.png"
             link="#{apiController.tldBase}/#{apiController.currentRelease}/tld/tc/sheet.html"/>
    |
    <tc:link label="&lt;tc:column/>" image="#{request.contextPath}/image/feather-leaf.png"
             link="#{apiController.tldBase}/#{apiController.currentRelease}/tld/tc/column.html"/>
    |
    <tc:link label="&lt;tc:gridLayoutConstraint/>" image="#{request.contextPath}/image/feather-leaf.png"
             link="#{apiController.tldBase}/#{apiController.currentRelease}/tld/tc/gridLayoutConstraint.html"/></p>

  <tc:section label="Multi-Header">
    <p>For multi-header sheets, you should consider to use <code>markup="bordered"</code> for better appearance.</p>
    <demo-highlight language="markup">&lt;tc:sheet value="\#{sheetController.solarList}" var="luminary" rows="11"
    columns="3fr 2fr 30px 2fr 2fr 2fr 2fr 2fr 2fr" markup="bordered">
  &lt;f:facet name="header">
    &lt;tc:out value="Name">
      &lt;tc:span row="3"/>
    &lt;/tc:out>
    &lt;tc:out value="Information">
      &lt;tc:gridLayoutConstraint columnSpan="2"/>
    ...</demo-highlight>
    <tc:sheet value="#{sheetController.solarList}" var="luminary" rows="11"
              columns="3fr 2fr 30px 2fr 2fr 2fr 2fr 2fr 2fr" markup="bordered">
      <f:facet name="header">
        <tc:panel>
          <tc:out value="Name">
            <tc:gridLayoutConstraint rowSpan="3"/>
          </tc:out>
          <tc:out value="Information">
            <tc:gridLayoutConstraint columnSpan="2"/>
          </tc:out>
          <tc:out value="Data">
            <tc:gridLayoutConstraint columnSpan="4"/>
          </tc:out>
          <tc:out value="Discovery">
            <tc:gridLayoutConstraint columnSpan="2"/>
          </tc:out>

          <tc:out value="Orbit">
            <tc:gridLayoutConstraint columnSpan="3"/>
          </tc:out>
          <tc:out value="Orb">
            <tc:gridLayoutConstraint columnSpan="3"/>
          </tc:out>
          <tc:out value="Name">
            <tc:gridLayoutConstraint rowSpan="2"/>
          </tc:out>
          <tc:out value="Year">
            <tc:gridLayoutConstraint rowSpan="2"/>
          </tc:out>

          <tc:out value="of"/>
          <tc:out value="#"/>
          <tc:out value="Distance [1000 km]"/>
          <tc:out value="Period [days]"/>
          <tc:out value="Inclination [°]"/>
          <tc:out value="Eccentricity"/>
        </tc:panel>
      </f:facet>

      <tc:column id="c_name" align="center" sortable="true">
        <tc:out value="#{luminary.name}" labelLayout="skip"/>
      </tc:column>
      <tc:column id="c_orbit" sortable="true">
        <tc:out value="#{luminary.orbit}" labelLayout="skip"/>
      </tc:column>
      <tc:column  id="c_number" align="center">
        <tc:out value="#{luminary.number}" labelLayout="skip"/>
      </tc:column>
      <tc:column align="right" sortable="true">
        <tc:out value="#{luminary.distance}" labelLayout="skip"/>
      </tc:column>
      <tc:column align="right" sortable="true">
        <tc:out value="#{luminary.period}" labelLayout="skip"/>
      </tc:column>
      <tc:column align="right" sortable="true">
        <tc:out value="#{luminary.incl}" labelLayout="skip"/>
      </tc:column>
      <tc:column align="right" sortable="true">
        <tc:out value="#{luminary.eccen}" labelLayout="skip"/>
      </tc:column>
      <tc:column sortable="true">
        <tc:out value="#{luminary.discoverer}" labelLayout="skip"/>
      </tc:column>
      <tc:column align="center" sortable="true">
        <tc:out value="#{luminary.discoverYear}" labelLayout="skip"/>
      </tc:column>
    </tc:sheet>
  </tc:section>
</ui:composition>