icingaweb2/library/Icinga/Web/JavaScript.php

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<?php
/* Icinga Web 2 | (c) 2014 Icinga Development Team | GPLv2+ */
namespace Icinga\Web;
use Icinga\Application\Icinga;
use Icinga\Web\FileCache;
use JShrink\Minifier;
class JavaScript
{
protected static $jsFiles = array(
'js/helpers.js',
'js/icinga.js',
'js/icinga/logger.js',
'js/icinga/utils.js',
'js/icinga/ui.js',
'js/icinga/timer.js',
'js/icinga/loader.js',
'js/icinga/eventlistener.js',
'js/icinga/events.js',
'js/icinga/history.js',
'js/icinga/module.js',
'js/icinga/timezone.js',
'js/icinga/behavior/application-state.js',
'js/icinga/behavior/autofocus.js',
'js/icinga/behavior/detach.js',
'js/icinga/behavior/tooltip.js',
'js/icinga/behavior/sparkline.js',
'js/icinga/behavior/tristate.js',
'js/icinga/behavior/dropdown.js',
'js/icinga/behavior/navigation.js',
'js/icinga/behavior/form.js',
'js/icinga/behavior/actiontable.js',
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'js/icinga/behavior/flyover.js',
'js/icinga/behavior/expandable.js',
'js/icinga/behavior/selectable.js'
);
protected static $vendorFiles = array(
'js/vendor/jquery-2.1.0',
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'js/vendor/jquery.sparkline',
'js/vendor/jquery.tipsy'
);
protected static $ie8VendorFiles = array(
'js/vendor/jquery-1.11.0',
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'js/vendor/jquery.sparkline',
'js/vendor/jquery.tipsy'
);
public static function sendMinified()
{
self::send(true);
}
public static function sendForIe8()
{
self::$vendorFiles = self::$ie8VendorFiles;
self::send();
}
/**
* Send the client side script code to the client
*
* Does not cache the client side script code if the HTTP header Cache-Control or Pragma is set to no-cache.
*
* @param bool $minified Whether to compress the client side script code
*/
public static function send($minified = false)
{
header('Content-Type: application/javascript');
$basedir = Icinga::app()->getBootstrapDirectory();
$js = $out = '';
$min = $minified ? '.min' : '';
// Prepare vendor file list
$vendorFiles = array();
foreach (self::$vendorFiles as $file) {
$vendorFiles[] = $basedir . '/' . $file . $min . '.js';
}
// Prepare Icinga JS file list
$jsFiles = array();
foreach (self::$jsFiles as $file) {
$jsFiles[] = $basedir . '/' . $file;
}
foreach (Icinga::app()->getModuleManager()->getLoadedModules() as $name => $module) {
if ($module->hasJs()) {
foreach ($module->getJsFiles() as $path) {
if (file_exists($path)) {
$jsFiles[] = $path;
}
}
}
}
$files = array_merge($vendorFiles, $jsFiles);
$request = Icinga::app()->getRequest();
$noCache = $request->getHeader('Cache-Control') === 'no-cache' || $request->getHeader('Pragma') === 'no-cache';
header('Cache-Control: public');
if (! $noCache && FileCache::etagMatchesFiles($files)) {
header("HTTP/1.1 304 Not Modified");
return;
} else {
$etag = FileCache::etagForFiles($files);
}
header('ETag: "' . $etag . '"');
header('Content-Type: application/javascript');
$cacheFile = 'icinga-' . $etag . $min . '.js';
$cache = FileCache::instance();
if (! $noCache && $cache->has($cacheFile)) {
$cache->send($cacheFile);
return;
}
// We do not minify vendor files
foreach ($vendorFiles as $file) {
$out .= ';' . ltrim(trim(file_get_contents($file)), ';') . "\n";
}
foreach ($jsFiles as $file) {
$js .= file_get_contents($file) . "\n\n\n";
}
if ($minified) {
require_once 'JShrink/Minifier.php';
$out .= Minifier::minify($js, array('flaggedComments' => false));
} else {
$out .= $js;
}
$cache->store($cacheFile, $out);
echo $out;
}
}