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<?php
namespace Perfmatters;
class JS
{
//initialize js
public static function init()
{
if(isset($_GET['perfmattersjsoff'])) {
return;
}
add_action('wp', array('Perfmatters\JS', 'queue'));
if(!empty(Config::$options['assets']['fastclick'])) {
add_filter('wp_head', array('Perfmatters\JS', 'print_fastclick'));
}
}
//queue functions
public static function queue()
{
$defer_check = !empty(apply_filters('perfmatters_defer_js', !empty(Config::$options['assets']['defer_js'])));
$delay_check = !empty(apply_filters('perfmatters_delay_js', !empty(Config::$options['assets']['delay_js'])));
if($defer_check || $delay_check) {
//actions + filters
add_filter('perfmatters_output_buffer_template_redirect', array('Perfmatters\JS', 'optimize'));
}
}
//add defer tag to js files in html
public static function optimize($html)
{
//skip woocommerce
if(Utilities::is_woocommerce()) {
return $html;
}
//strip comments before search
$html_no_comments = preg_replace('/<!--(.*)-->/Uis', '', $html);
//match all script tags
preg_match_all('#(<script\s?([^>]+)?\/?>)(.*?)<\/script>#is', $html_no_comments, $matches);
//no script tags found
if(!isset($matches[0])) {
return $html;
}
$defer_check = !empty(apply_filters('perfmatters_defer_js', !empty(Config::$options['assets']['defer_js']))) && !Utilities::get_post_meta('perfmatters_exclude_defer_js');
$delay_check = !empty(apply_filters('perfmatters_delay_js', !empty(Config::$options['assets']['delay_js']))) && !Utilities::get_post_meta('perfmatters_exclude_delay_js');
//build js exlusions array
$js_exclusions = array();
if($defer_check) {
//add jquery if needed
if(empty(Config::$options['assets']['defer_jquery'])) {
array_push($js_exclusions, 'jquery(?:\.min)?.js');
}
//add extra user exclusions
if(!empty(Config::$options['assets']['js_exclusions']) && is_array(Config::$options['assets']['js_exclusions'])) {
foreach(Config::$options['assets']['js_exclusions'] as $line) {
array_push($js_exclusions, preg_quote($line));
}
}
//convert exlusions to string for regex
$js_exclusions = implode('|', $js_exclusions);
}
//loop through scripts
foreach($matches[0] as $i => $tag) {
$atts_array = !empty($matches[2][$i]) ? Utilities::get_atts_array($matches[2][$i]) : array();
//skip if type is not javascript
if(isset($atts_array['type']) && stripos($atts_array['type'], 'javascript') == false) {
continue;
}
//delay javascript
if($delay_check) {
$delay_flag = false;
$delay_js_behavior = apply_filters('perfmatters_delay_js_behavior', Config::$options['assets']['delay_js_behavior'] ?? '');
if(empty($delay_js_behavior)) {
$delayed_scripts = apply_filters('perfmatters_delayed_scripts', Config::$options['assets']['delay_js_inclusions']);
if(!empty($delayed_scripts)) {
foreach($delayed_scripts as $delayed_script) {
if(strpos($tag, $delayed_script) !== false) {
$delay_flag = true;
if(!empty($atts_array['src'])) {
$atts_array['data-pmdelayedscript'] = $atts_array['src'];
unset($atts_array['src']);
}
else {
$atts_array['data-pmdelayedscript'] = "data:text/javascript;base64," . base64_encode($matches[3][$i]);
}
}
}
}
}
else {
$excluded_scripts = array(
'perfmatters-delayed-scripts-js',
'lazyload',
'lazyLoadInstance',
'lazysizes',
'customize-support',
'fastclick'
);
if(!empty(Config::$options['assets']['delay_js_exclusions']) && is_array(Config::$options['assets']['delay_js_exclusions'])) {
$excluded_scripts = array_merge($excluded_scripts, Config::$options['assets']['delay_js_exclusions']);
}
$excluded_scripts = apply_filters('perfmatters_delay_js_exclusions', $excluded_scripts);
if(!empty($excluded_scripts)) {
foreach($excluded_scripts as $excluded_script) {
if(strpos($tag, $excluded_script) !== false) {
continue 2;
}
}
}
$delay_flag = true;
if(!empty($atts_array['type'])) {
$atts_array['data-perfmatters-type'] = $atts_array['type'];
}
$atts_array['type'] = 'pmdelayedscript';
}
if($delay_flag) {
$atts_array['data-cfasync'] = "false";
$atts_array['data-no-optimize'] = "1";
$atts_array['data-no-defer'] = "1";
$atts_array['data-no-minify'] = "1";
//wp rocket compatability
if(defined('WP_ROCKET_VERSION')) {
$atts_array['data-rocketlazyloadscript'] = "1";
}
$delayed_atts_string = Utilities::get_atts_string($atts_array);
$delayed_tag = sprintf('<script %1$s>', $delayed_atts_string) . (!empty($delay_js_behavior) ? $matches[3][$i] : '') . '</script>';
//replace new full tag in html
$html = str_replace($tag, $delayed_tag, $html);
continue;
}
}
//defer javascript
if($defer_check) {
//src is not set
if(empty($atts_array['src'])) {
continue;
}
//check if src is excluded
if(!empty($js_exclusions) && preg_match('#(' . $js_exclusions . ')#i', $atts_array['src'])) {
continue;
}
//skip if there is already an async
if(stripos($matches[2][$i], 'async') !== false) {
continue;
}
//skip if there is already a defer
if(stripos($matches[2][$i], 'defer' ) !== false ) {
continue;
}
//add defer to opening tag
$deferred_tag_open = str_replace('>', ' defer>', $matches[1][$i]);
//replace new open tag in original full tag
$deferred_tag = str_replace($matches[1][$i], $deferred_tag_open, $tag);
//replace new full tag in html
$html = str_replace($tag, $deferred_tag, $html);
}
}
if($delay_check) {
$pos = strpos($html, '</body>');
if($pos !== false) {
$html = substr_replace($html, self::print_delay_js() . '</body>', $pos, 7);
}
}
return $html;
}
//print inline delay js
public static function print_delay_js() {
$timeout = apply_filters('perfmatters_delay_js_timeout', !empty(Config::$options['assets']['delay_timeout']) ? 10 : '');
if(!empty(apply_filters('perfmatters_delay_js', !empty(Config::$options['assets']['delay_js'])))) {
if(empty(apply_filters('perfmatters_delay_js_behavior', Config::$options['assets']['delay_js_behavior'] ?? ''))) {
return '<script type="text/javascript" id="perfmatters-delayed-scripts-js">' . (!empty($timeout) ? 'const perfmattersDelayTimer = setTimeout(pmLoadDelayedScripts,' . $timeout . '*1000);' : '') . 'const perfmattersUserInteractions=["keydown","mousemove","wheel","touchmove","touchstart","touchend"];perfmattersUserInteractions.forEach(function(event){window.addEventListener(event,pmTriggerDelayedScripts,{passive:!0})});function pmTriggerDelayedScripts(){pmLoadDelayedScripts();' . (!empty($timeout) ? 'clearTimeout(perfmattersDelayTimer);' : '') . 'perfmattersUserInteractions.forEach(function(event){window.removeEventListener(event, pmTriggerDelayedScripts,{passive:!0});});}function pmLoadDelayedScripts(){document.querySelectorAll("script[data-pmdelayedscript]").forEach(function(elem){elem.setAttribute("src",elem.getAttribute("data-pmdelayedscript"));});}</script>';
}
else {
$script = '<script type="text/javascript" id="perfmatters-delayed-scripts-js">';
$script.= 'const pmDelayClick=' . json_encode(apply_filters('perfmatters_delay_js_delay_click', empty(Config::$options['assets']['disable_click_delay']))) . ';';
if(!empty($timeout)) {
$script.= 'const pmDelayTimer=setTimeout(pmTriggerDOMListener,' . $timeout . '*1000);';
}
$script.= 'const pmUserInteractions=["keydown","mousedown","mousemove","wheel","touchmove","touchstart","touchend"],pmDelayedScripts={normal:[],defer:[],async:[]},jQueriesArray=[],pmInterceptedClicks=[];var pmDOMLoaded=!1,pmClickTarget="";function pmTriggerDOMListener(){"undefined"!=typeof pmDelayTimer&&clearTimeout(pmDelayTimer),pmUserInteractions.forEach(function(e){window.removeEventListener(e,pmTriggerDOMListener,{passive:!0})}),document.removeEventListener("visibilitychange",pmTriggerDOMListener),"loading"===document.readyState?document.addEventListener("DOMContentLoaded",pmTriggerDelayedScripts):pmTriggerDelayedScripts()}async function pmTriggerDelayedScripts(){pmDelayEventListeners(),pmDelayJQueryReady(),pmProcessDocumentWrite(),pmSortDelayedScripts(),pmPreloadDelayedScripts(),await pmLoadDelayedScripts(pmDelayedScripts.normal),await pmLoadDelayedScripts(pmDelayedScripts.defer),await pmLoadDelayedScripts(pmDelayedScripts.async),await pmTriggerEventListeners(),document.querySelectorAll("link[data-pmdelayedstyle]").forEach(function(e){e.setAttribute("href",e.getAttribute("data-pmdelayedstyle"))}),window.dispatchEvent(new Event("perfmatters-allScriptsLoaded")),pmReplayClicks()}function pmDelayEventListeners(){let e={};function t(t,r){function n(r){return e[t].delayedEvents.indexOf(r)>=0?"perfmatters-"+r:r}e[t]||(e[t]={originalFunctions:{add:t.addEventListener,remove:t.removeEventListener},delayedEvents:[]},t.addEventListener=function(){arguments[0]=n(arguments[0]),e[t].originalFunctions.add.apply(t,arguments)},t.removeEventListener=function(){arguments[0]=n(arguments[0]),e[t].originalFunctions.remove.apply(t,arguments)}),e[t].delayedEvents.push(r)}function r(e,t){let r=e[t];Object.defineProperty(e,t,{get:r||function(){},set:function(r){e["perfmatters"+t]=r}})}t(document,"DOMContentLoaded"),t(window,"DOMContentLoaded"),t(window,"load"),t(window,"pageshow"),t(document,"readystatechange"),r(document,"onreadystatechange"),r(window,"onload"),r(window,"onpageshow")}function pmDelayJQueryReady(){let e=window.jQuery;Object.defineProperty(window,"jQuery",{get:()=>e,set(t){if(t&&t.fn&&!jQueriesArray.includes(t)){t.fn.ready=t.fn.init.prototype.ready=function(e){pmDOMLoaded?e.bind(document)(t):document.addEventListener("perfmatters-DOMContentLoaded",function(){e.bind(document)(t)})};let r=t.fn.on;t.fn.on=t.fn.init.prototype.on=function(){if(this[0]===window){function e(e){return e=(e=(e=e.split(" ")).map(function(e){return"load"===e||0===e.indexOf("load.")?"perfmatters-jquery-load":e})).join(" ")}"string"==typeof arguments[0]||arguments[0]instanceof String?arguments[0]=e(arguments[0]):"object"==typeof arguments[0]&&Object.keys(arguments[0]).forEach(function(t){delete Object.assign(arguments[0],{[e(t)]:arguments[0][t]})[t]})}return r.apply(this,arguments),this},jQueriesArray.push(t)}e=t}})}function pmProcessDocumentWrite(){let e=new Map;document.write=document.writeln=function(t){var r=document.currentScript,n=document.createRange();let a=e.get(r);void 0===a&&(a=r.nextSibling,e.set(r,a));var i=document.createDocumentFragment();n.setStart(i,0),i.appendChild(n.createContextualFragment(t)),r.parentElement.insertBefore(i,a)}}function pmSortDelayedScripts(){document.querySelectorAll("script[type=pmdelayedscript]").forEach(function(e){e.hasAttribute("src")?e.hasAttribute("defer")&&!1!==e.defer?pmDelayedScripts.defer.push(e):e.hasAttribute("async")&&!1!==e.async?pmDelayedScripts.async.push(e):pmDelayedScripts.normal.push(e):pmDelayedScripts.normal.push(e)})}function pmPreloadDelayedScripts(){var e=document.createDocumentFragment();[...pmDelayedScripts.normal,...pmDelayedScripts.defer,...pmDelayedScripts.async].forEach(function(t){var r=t.getAttribute("src");if(r){var n=document.createElement("link");n.href=r,n.rel="preload",n.as="script",e.appendChild(n)}}),document.head.appendChild(e)}async function pmLoadDelayedScripts(e){var t=e.shift();return t?(await pmReplaceScript(t),pmLoadDelayedScripts(e)):Promise.resolve()}async function pmReplaceScript(e){return await pmNextFrame(),new Promise(function(t){let r=document.createElement("script");[...e.attributes].forEach(function(e){let t=e.nodeName;"type"!==t&&("data-type"===t&&(t="type"),r.setAttribute(t,e.nodeValue))}),e.hasAttribute("src")?(r.addEventListener("load",t),r.addEventListener("error",t)):(r.text=e.text,t()),e.parentNode.replaceChild(r,e)})}async function pmTriggerEventListeners(){pmDOMLoaded=!0,await pmNextFrame(),document.dispatchEvent(new Event("perfmatters-DOMContentLoaded")),await pmNextFrame(),window.dispatchEvent(new Event("perfmatters-DOMContentLoaded")),await pmNextFrame(),document.dispatchEvent(new Event("perfmatters-readystatechange")),await pmNextFrame(),document.perfmattersonreadystatechange&&document.perfmattersonreadystatechange(),await pmNextFrame(),window.dispatchEvent(new Event("perfmatters-load")),await pmNextFrame(),window.perfmattersonload&&window.perfmattersonload(),await pmNextFrame(),jQueriesArray.forEach(function(e){e(window).trigger("perfmatters-jquery-load")});let e=new Event("perfmatters-pageshow");e.persisted=window.pmPersisted,window.dispatchEvent(e),await pmNextFrame(),window.perfmattersonpageshow&&window.perfmattersonpageshow({persisted:window.pmPersisted})}async function pmNextFrame(){return new Promise(function(e){requestAnimationFrame(e)})}function pmClickHandler(e){e.target.removeEventListener("click",pmClickHandler),pmRenameDOMAttribute(e.target,"pm-onclick","onclick"),pmInterceptedClicks.push(e),e.preventDefault(),e.stopPropagation(),e.stopImmediatePropagation()}function pmReplayClicks(){window.removeEventListener("touchstart",pmTouchStartHandler,{passive:!0}),window.removeEventListener("mousedown",pmTouchStartHandler),pmInterceptedClicks.forEach(e=>{e.target.outerHTML===pmClickTarget&&e.target.dispatchEvent(new MouseEvent("click",{view:e.view,bubbles:!0,cancelable:!0}))})}function pmTouchStartHandler(e){"HTML"!==e.target.tagName&&(pmClickTarget||(pmClickTarget=e.target.outerHTML),window.addEventListener("touchend",pmTouchEndHandler),window.addEventListener("mouseup",pmTouchEndHandler),window.addEventListener("touchmove",pmTouchMoveHandler,{passive:!0}),window.addEventListener("mousemove",pmTouchMoveHandler),e.target.addEventListener("click",pmClickHandler),pmRenameDOMAttribute(e.target,"onclick","pm-onclick"))}function pmTouchMoveHandler(e){window.removeEventListener("touchend",pmTouchEndHandler),window.removeEventListener("mouseup",pmTouchEndHandler),window.removeEventListener("touchmove",pmTouchMoveHandler,{passive:!0}),window.removeEventListener("mousemove",pmTouchMoveHandler),e.target.removeEventListener("click",pmClickHandler),pmRenameDOMAttribute(e.target,"pm-onclick","onclick")}function pmTouchEndHandler(e){window.removeEventListener("touchend",pmTouchEndHandler),window.removeEventListener("mouseup",pmTouchEndHandler),window.removeEventListener("touchmove",pmTouchMoveHandler,{passive:!0}),window.removeEventListener("mousemove",pmTouchMoveHandler)}function pmRenameDOMAttribute(e,t,r){e.hasAttribute&&e.hasAttribute(t)&&(event.target.setAttribute(r,event.target.getAttribute(t)),event.target.removeAttribute(t))}window.addEventListener("pageshow",e=>{window.pmPersisted=e.persisted}),pmUserInteractions.forEach(function(e){window.addEventListener(e,pmTriggerDOMListener,{passive:!0})}),pmDelayClick&&(window.addEventListener("touchstart",pmTouchStartHandler,{passive:!0}),window.addEventListener("mousedown",pmTouchStartHandler)),document.addEventListener("visibilitychange",pmTriggerDOMListener);';
//trigger elementor animations
if(function_exists('\is_plugin_active') && \is_plugin_active('elementor/elementor.php')) {
$script.= 'var pmeDeviceMode,pmeAnimationSettingsKeys,pmeCurrentAnimation;function pmeAnimation(){(pmeDeviceMode=document.createElement("span")).id="elementor-device-mode",pmeDeviceMode.setAttribute("class","elementor-screen-only"),document.body.appendChild(pmeDeviceMode),requestAnimationFrame(pmeDetectAnimations)}function pmeDetectAnimations(){pmeAnimationSettingsKeys=pmeListAnimationSettingsKeys(getComputedStyle(pmeDeviceMode,":after").content.replace(/"/g,"")),document.querySelectorAll(".elementor-invisible[data-settings]").forEach(a=>{let b=a.getBoundingClientRect();if(b.bottom>=0&&b.top<=window.innerHeight)try{pmeAnimateElement(a)}catch(c){}})}function pmeAnimateElement(a){let b=JSON.parse(a.dataset.settings),d=b._animation_delay||b.animation_delay||0,c=b[pmeAnimationSettingsKeys.find(a=>b[a])];if("none"===c)return void a.classList.remove("elementor-invisible");a.classList.remove(c),pmeCurrentAnimation&&a.classList.remove(pmeCurrentAnimation),pmeCurrentAnimation=c;let e=setTimeout(()=>{a.classList.remove("elementor-invisible"),a.classList.add("animated",c),pmeRemoveAnimationSettings(a,b)},d);window.addEventListener("perfmatters-startLoading",function(){clearTimeout(e)})}function pmeListAnimationSettingsKeys(b="mobile"){let a=[""];switch(b){case"mobile":a.unshift("_mobile");case"tablet":a.unshift("_tablet");case"desktop":a.unshift("_desktop")}let c=[];return["animation","_animation"].forEach(b=>{a.forEach(a=>{c.push(b+a)})}),c}function pmeRemoveAnimationSettings(a,b){pmeListAnimationSettingsKeys().forEach(a=>delete b[a]),a.dataset.settings=JSON.stringify(b)}document.addEventListener("DOMContentLoaded",pmeAnimation)';
}
$script.= '</script>';
return $script;
}
}
}
//print fastclick js
public static function print_fastclick() {
if(is_admin()) {
return;
}
if(isset($_GET['perfmattersoff'])) {
return;
}
//skip woocommerce
if(Utilities::is_woocommerce()) {
return;
}
echo '<script src="' . plugins_url('perfmatters/vendor/fastclick/fastclick.min.js') . '"></script>';
echo '<script>"addEventListener"in document&&document.addEventListener("DOMContentLoaded",function(){FastClick.attach(document.body)},!1);</script>';
}
}