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<!DOCTYPE html>
<html>
<!--
Copyright (c) 2011 The Chromium Authors. All rights reserved.
Use of this source code is governed by a BSD-style license that can be
found in the LICENSE file.
-->
<head>
<title>postMessage Example</title>
</head>
<body>
<script type="text/javascript">
function SendString() {
plugin = document.getElementById('plugin');
// If we haven't already done it, set up an 'onmessage' function. This will
// get invoked whenever the plugin calls Instance::PostMessage in C++ (or
// PPB_Messaging::PostMessage in C). In this case, we're expecting a bool to
// tell us whether the string we passed was a palindrome.
if (!plugin.onmessage) {
plugin.onmessage = function(message_event) {
if (message_event.data) {
alert("The string was a palindrome.");
} else {
alert("The string was not a palindrome.");
}
}
}
var inputBox = document.getElementById("inputBox");
// Send the string to the plugin using postMessage. This results in a call
// to Instance::HandleMessage in C++ (or PPP_Messaging::HandleMessage in C).
plugin.postMessage(inputBox.value);
}
</script>
<input type="text" id="inputBox" name="inputBox" value="ablewasiereisawelba"/>
<p>
<button onclick='SendString()'>Is Palindrome</button>
<object id="plugin" type="application/x-ppapi-post-message-example"
width="0" height="0"/>
<hr>
</body>
</html>
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