<html>
<head>
<script language="JavaScript" type="text/javascript">
// Dojo configuration
djConfig = {
parseWidgets: false,
isDebug: true
};
</script>
<script language="JavaScript" type="text/javascript"
src="../../dojo.js"></script>
<script language="JavaScript" type="text/javascript">
dojo.require("dojo.event.topic");
sub1 = null;
sub2 = null;
function Subscriber(displayNode, subId, doUnsubscribe){
this.subId = subId;
this.doUnsubscribe = doUnsubscribe;
this.displayNode = displayNode;
this.update = function(message) {
this.displayNode.innerHTML = this.subId + ": " + message;
if(this.doUnsubscribe){
dojo.event.topic.unsubscribe("testTopic1", this, "update");
this.displayNode.innerHTML += "<br>" + this.subId + " has unsubscribed";
}
};
}
var clickCount = 0;
function sendMessage1() {
dojo.event.topic.publish("testTopic1", "Message " + (++clickCount));
}
dojo.addOnLoad(function(){
sub1 = new Subscriber(document.getElementById("subscriber1"), "subscriber1", true);
sub2 = new Subscriber(document.getElementById("subscriber2"), "subscriber2", false);
dojo.event.topic.subscribe("testTopic1", sub1, "update");
dojo.event.topic.subscribe("testTopic1", sub2, "update");
});
</script>
</head>
<body>
<h1>Unsubscribe during a topic message notification</h2>
<p>This test sees if it is possible for a subscriber to unsubscribe from a topic during notification
of a topic message. Unsubscribing should not affect other subscribers from receiving the topic
message.</p>
<p>After pressing the button, the output should be:<br>
<i>subscriber1: Message 1<br>
subscriber1 has unsubscribed<br>
subscriber2: Message 1<br></i>
</p>
<div style="font-weight: bold">Test</div>
<div id="subscriber1" style="border: 1px solid black">
subscriber1:
</div>
<div id="subscriber2" style="border: 1px solid black">
subscriber2:
</div>
<button id="publisher" onclick="sendMessage1();">
Publish a message on Topic1
</button>
</body>
</html>