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<?php
# >>> [Additional code for the async function]
#===============================================================================
# FUNCTION: Return TRUE if the request awaiting a async response
#===============================================================================
function isAsyncRequest() {
return isset($_GET['response']) AND $_GET['response'] === 'async';
}
# <<<
#===============================================================================
# Deactivate caching
#===============================================================================
header('Cache-Control: no-cache, no-store, must-revalidate');
#===============================================================================
# Include classes and functions
#===============================================================================
spl_autoload_register(function($classname) {
$classpath = 'include/classes/%s.php';
$classname = str_replace('\\', '/', $classname);
require_once sprintf($classpath, $classname);
});
require_once 'include/functions.php';
#===============================================================================
# Check if BigPipe should be disabled
#===============================================================================
if(isset($_GET['bigpipe'])) {
# You can use this method also to disable pipeline for Googlebot or something.
BigPipe\BigPipe::enabled($_GET['bigpipe']);
}
// Outsourced to avoid duplicate code in index.php and async.php
require_once 'include/pagelets.php';
?>
<!DOCTYPE html>
<html lang="de">
<?php if(!isAsyncRequest()): ?>
<head>
<meta charset="UTF-8" />
<meta name="robots" content="noindex, nofollow" />
<style>
html{margin:0;padding:0;background:#B9C3D2;font-family:Calibri,Sans-Serif;}
body{max-width:1200px;margin:0 auto;}
.text{color:white;margin-bottom:30px;padding:40px;border-radius:4px;font-weight:600;text-align:center;border:4px solid black;}
.hidden{display:none;}
</style>
<script src="static/bigpipe.js"></script>
<title>BigPipe Demo</title>
<!-- >>> [Additional code for the async function] -->
<script>
var Application = {
bigPipeEnabled: <?=json_encode(BigPipe\BigPipe::enabled())?>,
placeholderHTML: function(HTML) {
document.getElementById('placeholder_container').innerHTML = HTML;
}
};
function fireAsyncRequest(href) {
if(Application.bigPipeEnabled === false) {
alert("Note: Pipelining is disabled and page will be loaded quite normal.");
return;
}
console.info('ASYNC REQUEST FIRED!');
Application.placeholderHTML("");
BigPipe.reset();
var transport_frame;
if(transport_frame = document.getElementById('transport_frame')) {
document.body.removeChild(transport_frame);
}
var iframe = document.createElement('iframe');
iframe.setAttribute('id', 'transport_frame');
iframe.setAttribute('class', 'hidden');
iframe.setAttribute('src', href + '?response=async');
document.body.appendChild(iframe);
iframe.onload = function() {
document.body.removeChild(iframe);
}.bind(this);
return false;
}
</script>
<!-- <<< -->
</head>
<?php endif; ?>
<body>
<?php if(!isAsyncRequest()): ?>
<h1>BigPipe Async Demo</h1>
<p><a href="async.php" onclick="return fireAsyncRequest(this)">LOAD CONTENT VIA TRANSPORT FRAME</a> [Current Time: <?=time();?> – So you can see, that the page does not get completely reloaded]</p>
<p><em>Look at the developer console of your browser to see the debug messages and how the async response from server looks.</em></p>
<section id="placeholder_container">
<?php else: ob_start(); endif; ?>
<?php
echo $PageletRed;
echo $PageletBlue;
echo $PageletGreen;
?>
<?php if(!isAsyncRequest()):?>
</section>
<footer><strong>The footer of the page.</strong></footer>
<?php endif;
if(isAsyncRequest()) {
$BUFFER = removeLineBreaksAndTabs(ob_get_clean());
echo '<script>["Application","BigPipe"].forEach(function(name){window[name] = parent[name];});</script>'."\n";
echo '<script>Application.placeholderHTML('.json_encode($BUFFER).');</script>'."\n\n";
}
BigPipe\BigPipe::render();
?>
</body>
</html>
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