content/container/sample-pubsub-subscriber.xml

<?xml version="1.0" encoding="UTF-8"?>
<!--
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
-->
<Module>
<ModulePrefs title="Sample PubSub Subscriber"
             height="250">
<Require feature="pubsub"/>
</ModulePrefs>
<Content type="html">
<![CDATA[
<script>
function callback(sender, message) {
  document.getElementById("output").innerHTML =
    "message : " + gadgets.util.escapeString(message + "") + "<br/>" +
    "sender : " + gadgets.util.escapeString(sender);
}

function subscribe() {
  gadgets.pubsub.subscribe("random-number", callback);
}

function unsubscribe() {
  gadgets.pubsub.unsubscribe("random-number");
  document.getElementById("output").innerHTML = "";
}

</script>
<div>
<input type="button" value="Subscribe" onclick="subscribe()"/>
<input type="button" value="Unsubscribe" onclick="unsubscribe()"/>
</div>
<div id="output">
</div>
]]>
</Content>
</Module>