demo/hub-demo-portlet/src/main/webapp/WEB-INF/jsp/view-ptp.jsp

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<%@ page session="false" %>
<%@ taglib uri="http://xmlns.jcp.org/portlet_3_0"  prefix="portlet" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ page import="static org.apache.portals.pluto.demo.hub.Constants.*" %>

<portlet:defineObjects />

<h3>Parameter Tester</h3><hr/>
<p>Enter parameter name and value and click 'send'.
To enter multiple values, separate values with a ',' character.
Entering 'null' as a value will cause the corresponding value in the values array to be set to null.
Entering 'null' by itself will cause the parameter to be set to null (removed).
Entering 'empty' by itself will set the parameter to an empty array.
Leaving the value field empty will set the parameter to an array containing a single empty string.
<p/>
<hr/>
<FORM id='<portlet:namespace/>-setParams' METHOD='POST' onsubmit='return false;' enctype='application/x-www-form-urlencoded' accept-charset='UTF-8'>
   <table><tr><td align='left'>
      Parameter Name:
   </td><td colspan=2>
   <input name='<portlet:namespace/>-pName' type='text' value='' size='50' maxlength='100'>
   </td></tr><tr><td>
      Parameter Values:
   </td><td colspan=2>
   <input name='<portlet:namespace/>-pVal' type='text' value='' size='50' maxlength='100'>
   </td></tr><tr><td>
   <INPUT VALUE='send' CLASS='portlet-form-button' TYPE='submit'>
   </td></tr></table>
</FORM>

<hr/>
<div id='<portlet:namespace/>-putResourceHere'></div>


<script>
(function () {
   'use strict';
    
   var pid = '<portlet:namespace/>',
       pnid = '<portlet:namespace/>-pName',
       pvid = '<portlet:namespace/>-pVal',
       msgdiv = '<portlet:namespace/>-putResourceHere',
       formid = '<portlet:namespace/>-setParams',
       currState,
       hub,

       
   // Handler for onStateChange event
   update = function (type, state) {
      currState = state;
      
      hub.createResourceUrl().then(function (url) {
         var xhr = new XMLHttpRequest();
         console.log("PTP: got url: " + url);
         xhr.onreadystatechange = function () {
            if (xhr.readyState === 4 && xhr.status === 200) {
               document.getElementById(msgdiv).innerHTML=xhr.responseText;
            }
         };
         xhr.open("GET",url,true);
         xhr.send();
      });
   };
   

   // Register portlet with Portlet Hub. Add listener for onStateChange event.
   portlet.register(pid).then(function (pi) {
      console.log("PTP Parameter Test Portlet: registered: " + pid);
      hub = pi;
      currState = hub.newState();
      hub.addEventListener("portlet.onStateChange", update);
   });
   

   // Handler for 'send' button click. Update parameters
   document.getElementById(formid).addEventListener('submit', function (event) {
      var pName = this[pnid].value,
          pValue = this[pvid].value, 
          nstate, vals, ii;
      
      // limit allowed characters
      if (/\W/.test(pName) || (pValue.length > 0 && !/^[\w,]+$/.test(pValue))) {
         console.log("PTP: Bad characters. PN=" + pName + ", PV=" + pValue);
      } else {
         
         console.log("PTP: updating parameters. PN=" + pName + ", PV=" + pValue);
         
         nstate = currState.clone();
         if (pValue === 'null') {
            nstate.remove(pName);
         } else {
            if (pValue === 'empty') {
               nstate.parameters[pName] = [];
            } else {
               vals = pValue.split(",");
               for (ii = 0; ii < vals.length; ii++) {
                  if (vals[ii] === 'null') {
                     vals[ii] = null;
                  }
               }
               nstate.setValues(pName, vals);
            }
         }
         
         hub.setRenderState(nstate);
      }

      this[pnid].value = '';
      this[pvid].value = '';

      event.preventDefault();
   });
      
}());
</script>