136 lines
4.4 KiB
PHP
Executable File
136 lines
4.4 KiB
PHP
Executable File
<?php
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use SilverStripe\View\TemplateGlobalProvider;
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use SilverStripe\View\Requirements;
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use SilverStripe\Core\Config\Config;
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use SilverStripe\Control\Director;
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use SilverStripe\Core\Path;
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use SilverStripe\Core\Manifest\ManifestFileFinder;
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class DeferedRequirements implements TemplateGlobalProvider {
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private static $css = [];
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private static $js = [];
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private static $defered = false;
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private static $static_domain;
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private static $version;
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/**
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* @return array
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*/
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public static function get_template_global_variables()
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{
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return [
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'AutoRequirements' => 'Auto',
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'DeferedCSS' => 'loadCSS',
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'DeferedJS' => 'loadJS',
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];
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}
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public static function Auto($class = false)
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{
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// Initialization
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Requirements::block(THIRDPARTY_DIR.'/jquery/jquery.js');
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if (defined('FONT_AWESOME_DIR')) {
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Requirements::block(FONT_AWESOME_DIR.'/css/lib/font-awesome.min.css');
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}
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Requirements::set_force_js_to_bottom(true);
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// Main libs
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DeferedRequirements::loadJS('//ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js');
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// App libs
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DeferedRequirements::loadCSS('app.css');
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DeferedRequirements::loadJS('app.js');
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// Class libs
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if($class) {
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$dir = Path::join(Director::publicFolder(), ManifestFileFinder::RESOURCES_DIR);
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if(file_exists(Path::join($dir,$class . '.js'))) {
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DeferedRequirements::loadJS($class . '.js');
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}
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if(file_exists(Path::join($dir,$class . '.css'))) {
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DeferedRequirements::loadCSS($class . '.css');
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}
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}
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return self::forTemplate();
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}
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public static function loadCSS($css)
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{
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if (self::$defered && !self::_webpackActive()) {
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self::$css[] = $css;
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} else {
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WebpackTemplateProvider::loadCSS($css);
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}
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}
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public static function loadJS($js)
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{
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if (self::$defered && !self::_webpackActive()) {
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self::$js[] = $js;
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} else {
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WebpackTemplateProvider::loadJS($js);
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}
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}
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protected static function _webpackActive()
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{
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return class_exists('WebpackTemplateProvider') && WebpackTemplateProvider::isActive();
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}
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public static function setDefered($bool)
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{
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self::$defered = $bool;
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}
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public static function forTemplate()
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{
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if (!self::$defered || self::_webpackActive()) {
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return false;
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}
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$result = '';
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foreach (self::$css as $css) {
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$result .= '<i class="defer-cs" data-load="' . self::get_url($css) . '"></i>';
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}
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foreach (self::$js as $js) {
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$result .= '<i class="defer-sc" data-load="' . self::get_url($js) . '"></i>';
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}
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$result .=
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'<script type="text/javascript">function lsc(a,b){var c=document.createElement("script");c.type="text/javascript",c.readyState'
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.'?c.onreadystatechange=function(){"loaded"!=c.readyState&&"complete"!=c.readyState||(c.onreadystatechange=null,b())}'
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.':c.onload=function(){b()},c.src=a,document.getElementsByTagName("body")[0].appendChild(c)}'
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.'function lscd(a){a<s.length-1&&(a++,lsc(s.item(a).getAttribute("data-load"),function(){lscd(a)}))}'
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.'for(var s=document.getElementsByClassName("defer-cs"),i=0;i<s.length;i++){var b=document.createElement("link");b.rel="stylesheet",'
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.'b.type="text/css",b.href=s.item(i).getAttribute("data-load"),b.media="all";var c=document.getElementsByTagName("body")[0];'
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.'c.appendChild(b)}var s=document.getElementsByClassName("defer-sc"),i=0;lsc(s.item(i).getAttribute("data-load"),function(){lscd(i)});'
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.'</script>';
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return $result;
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}
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private static function get_url($url)
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{
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// external URL
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if (strpos($url, '//') !== false) {
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return $url;
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}
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$version = Config::inst()->get('DeferedRequirements', 'version');
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$version = $version
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? strpos($url, '?') // inner URL
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? '&'.$version // add param
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: '?'.$version // new param
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: ''; // no version defined
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$static_domain = Config::inst()->get('DeferedRequirements', 'static_domain');
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$static_domain = $static_domain ? $static_domain : '';
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return $url.$version;
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}
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}
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