Exporting charts as images

PrimeFaces provides the ability to export charts generated by various chart components as images using the client-side API method widgetVar.exportAsImage().

<h:form id="form1">
  <p:lineChart widgetVar="chartWgt" 
    value="#{chartController.chartModel}" 
      style="width:500px;height:300px" 
      title="Linear Chart" 
      legendPosition="e"
      minY="0" maxY="600"/>
  
  <p:commandButton type="button" value="Export" onclick="exportChart()"/>

  <p:dialog widgetVar="dlg" showEffect="fade" modal="true" header="Chart as an Image">
    <p:outputPanel id="output" layout="block" style="width:500px;height:300px"/>
  </p:dialog> 
 </h:form>
<script type="text/javascript">
  function exportChart() 
  {
    $(PrimeFaces.escapeClientId...