/home/fdhrevqn/www/wp-content/plugins.disabled/wp-rocket/inc/Dependencies/RocketLazyload/Assets.php
<?php
/**
* Handle the lazyload required assets: inline CSS and JS
*
* @package WP_Rocket\Dependencies\RocketLazyload
*/
namespace WP_Rocket\Dependencies\RocketLazyload;
/**
* Class containing the methods to return or print the assets needed for lazyloading
*/
class Assets {
/**
* Inserts the lazyload script in the HTML
*
* @param array $args Array of arguments to populate the lazyload script tag.
* @return void
*/
public function insertLazyloadScript( $args = [] ) {
echo $this->getLazyloadScript( $args );
}
/**
* Gets the inline lazyload script configuration
*
* @param array $args Array of arguments to populate the lazyload script options.
* @return string
*/
public function getInlineLazyloadScript( $args = [] ) {
$defaults = [
'elements' => [
'img',
'iframe',
],
'threshold' => 300,
'options' => [],
];
$allowed_options = [
'container' => 1,
'thresholds' => 1,
'data_bg' => 1,
'class_error' => 1,
'cancel_on_exit' => 1,
'unobserve_completed' => 1,
'callback_enter' => 1,
'callback_exit' => 1,
'callback_loading' => 1,
'callback_error' => 1,
'callback_finish' => 1,
'use_native' => 1,
];
$args = wp_parse_args( $args, $defaults );
$script = '';
$args['options'] = array_intersect_key( $args['options'], $allowed_options );
$script .= 'window.lazyLoadOptions = {
elements_selector: "' . esc_attr( implode( ',', $args['elements'] ) ) . '",
data_src: "lazy-src",
data_srcset: "lazy-srcset",
data_sizes: "lazy-sizes",
class_loading: "lazyloading",
class_loaded: "lazyloaded",
threshold: ' . esc_attr( $args['threshold'] ) . ',
callback_loaded: function(element) {
if ( element.tagName === "IFRAME" && element.dataset.rocketLazyload == "fitvidscompatible" ) {
if (element.classList.contains("lazyloaded") ) {
if (typeof window.jQuery != "undefined") {
if (jQuery.fn.fitVids) {
jQuery(element).parent().fitVids();
}
}
}
}
}';
if ( ! empty( $args['options'] ) ) {
$script .= ',' . PHP_EOL;
foreach ( $args['options'] as $option => $value ) {
$script .= $option . ': ' . $value . ',';
}
$script = rtrim( $script, ',' );
}
$script .= '};';
$script .= '
window.addEventListener(\'LazyLoad::Initialized\', function (e) {
var lazyLoadInstance = e.detail.instance;
if (window.MutationObserver) {
var observer = new MutationObserver(function(mutations) {
var image_count = 0;
var iframe_count = 0;
var rocketlazy_count = 0;
mutations.forEach(function(mutation) {
for (i = 0; i < mutation.addedNodes.length; i++) {
if (typeof mutation.addedNodes[i].getElementsByTagName !== \'function\') {
continue;
}
if (typeof mutation.addedNodes[i].getElementsByClassName !== \'function\') {
continue;
}
images = mutation.addedNodes[i].getElementsByTagName(\'img\');
is_image = mutation.addedNodes[i].tagName == "IMG";
iframes = mutation.addedNodes[i].getElementsByTagName(\'iframe\');
is_iframe = mutation.addedNodes[i].tagName == "IFRAME";
rocket_lazy = mutation.addedNodes[i].getElementsByClassName(\'rocket-lazyload\');
image_count += images.length;
iframe_count += iframes.length;
rocketlazy_count += rocket_lazy.length;
if(is_image){
image_count += 1;
}
if(is_iframe){
iframe_count += 1;
}
}
} );
if(image_count > 0 || iframe_count > 0 || rocketlazy_count > 0){
lazyLoadInstance.update();
}
} );
var b = document.getElementsByTagName("body")[0];
var config = { childList: true, subtree: true };
observer.observe(b, config);
}
}, false);';
return $script;
}
/**
* Returns the lazyload inline script
*
* @param array $args Array of arguments to populate the lazyload script options.
* @return string
*/
public function getLazyloadScript( $args = [] ) {
$defaults = [
'base_url' => '',
'version' => '',
'polyfill' => false,
];
$args = wp_parse_args( $args, $defaults );
$min = ( defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG ) ? '' : '.min';
$script = '';
if ( isset( $args['polyfill'] ) && $args['polyfill'] ) {
$script .= '<script crossorigin="anonymous" src="https://polyfill.io/v3/polyfill.min.js?flags=gated&features=default%2CIntersectionObserver%2CIntersectionObserverEntry"></script>';
}
/**
* Filters the script tag for the lazyload script
*
* @since 2.2.6
*
* @param $script_tag HTML tag for the lazyload script.
*/
$script .= apply_filters( 'rocket_lazyload_script_tag', '<script data-no-minify="1" async src="' . $args['base_url'] . $args['version'] . '/lazyload' . $min . '.js"></script>' );
return $script;
}
/**
* Inserts in the HTML the script to replace the Youtube thumbnail by the iframe.
*
* @param array $args Array of arguments to populate the script options.
* @return void
*/
public function insertYoutubeThumbnailScript( $args = [] ) {
echo $this->getYoutubeThumbnailScript( $args );
}
/**
* Returns the Youtube Thumbnail inline script
*
* @param array $args Array of arguments to populate the script options.
* @return string
*/
public function getYoutubeThumbnailScript( $args = [] ) {
$defaults = [
'resolution' => 'hqdefault',
'lazy_image' => false,
];
$allowed_resolutions = [
'default' => [
'width' => 120,
'height' => 90,
],
'mqdefault' => [
'width' => 320,
'height' => 180,
],
'hqdefault' => [
'width' => 480,
'height' => 360,
],
'sddefault' => [
'width' => 640,
'height' => 480,
],
'maxresdefault' => [
'width' => 1280,
'height' => 720,
],
];
$args['resolution'] = ( isset( $args['resolution'] ) && isset( $allowed_resolutions[ $args['resolution'] ] ) ) ? $args['resolution'] : 'hqdefault';
$args = wp_parse_args( $args, $defaults );
$image = '<img src="https://i.ytimg.com/vi/ID/' . $args['resolution'] . '.jpg" alt="" width="' . $allowed_resolutions[ $args['resolution'] ]['width'] . '" height="' . $allowed_resolutions[ $args['resolution'] ]['height'] . '">';
if ( isset( $args['lazy_image'] ) && $args['lazy_image'] ) {
$image = '<img loading="lazy" data-lazy-src="https://i.ytimg.com/vi/ID/' . $args['resolution'] . '.jpg" alt="" width="' . $allowed_resolutions[ $args['resolution'] ]['width'] . '" height="' . $allowed_resolutions[ $args['resolution'] ]['height'] . '"><noscript><img src="https://i.ytimg.com/vi/ID/' . $args['resolution'] . '.jpg" alt="" width="' . $allowed_resolutions[ $args['resolution'] ]['width'] . '" height="' . $allowed_resolutions[ $args['resolution'] ]['height'] . '"></noscript>';
}
return "<script>function lazyLoadThumb(e){var t='{$image}',a='<div class=\"play\"></div>';return t.replace(\"ID\",e)+a}function lazyLoadYoutubeIframe(){var e=document.createElement(\"iframe\"),t=\"ID?autoplay=1\";t+=0===this.dataset.query.length?'':'&'+this.dataset.query;e.setAttribute(\"src\",t.replace(\"ID\",this.dataset.src)),e.setAttribute(\"frameborder\",\"0\"),e.setAttribute(\"allowfullscreen\",\"1\"),e.setAttribute(\"allow\", \"accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture\"),this.parentNode.replaceChild(e,this)}document.addEventListener(\"DOMContentLoaded\",function(){var e,t,a=document.getElementsByClassName(\"rll-youtube-player\");for(t=0;t<a.length;t++)e=document.createElement(\"div\"),e.setAttribute(\"data-id\",a[t].dataset.id),e.setAttribute(\"data-query\", a[t].dataset.query),e.setAttribute(\"data-src\", a[t].dataset.src),e.innerHTML=lazyLoadThumb(a[t].dataset.id),e.onclick=lazyLoadYoutubeIframe,a[t].appendChild(e)});</script>";
}
/**
* Inserts the CSS to style the Youtube thumbnail container
*
* @param array $args Array of arguments to populate the CSS.
* @return void
*/
public function insertYoutubeThumbnailCSS( $args = [] ) {
wp_register_style( 'rocket-lazyload', false );
wp_enqueue_style( 'rocket-lazyload' );
wp_add_inline_style( 'rocket-lazyload', $this->getYoutubeThumbnailCSS( $args ) );
}
/**
* Returns the CSS for the Youtube Thumbnail
*
* @param array $args Array of arguments to populate the CSS.
* @return string
*/
public function getYoutubeThumbnailCSS( $args = [] ) {
$defaults = [
'base_url' => '',
'responsive_embeds' => true,
];
$args = wp_parse_args( $args, $defaults );
$css = '.rll-youtube-player{position:relative;padding-bottom:56.23%;height:0;overflow:hidden;max-width:100%;}.rll-youtube-player iframe{position:absolute;top:0;left:0;width:100%;height:100%;z-index:100;background:0 0}.rll-youtube-player img{bottom:0;display:block;left:0;margin:auto;max-width:100%;width:100%;position:absolute;right:0;top:0;border:none;height:auto;cursor:pointer;-webkit-transition:.4s all;-moz-transition:.4s all;transition:.4s all}.rll-youtube-player img:hover{-webkit-filter:brightness(75%)}.rll-youtube-player .play{height:72px;width:72px;left:50%;top:50%;margin-left:-36px;margin-top:-36px;position:absolute;background:url(' . $args['base_url'] . 'img/youtube.png) no-repeat;cursor:pointer}';
if ( $args['responsive_embeds'] ) {
$css .= '.wp-has-aspect-ratio .rll-youtube-player{position:absolute;padding-bottom:0;width:100%;height:100%;top:0;bottom:0;left:0;right:0}';
}
return $css;
}
/**
* Inserts the CSS needed when Javascript is not enabled to keep the display correct
*/
public function insertNoJSCSS() {
echo $this->getNoJSCSS();
}
/**
* Returns the CSS to correctly display images when JavaScript is disabled
*
* @return string
*/
public function getNoJSCSS() {
return '<noscript><style id="rocket-lazyload-nojs-css">.rll-youtube-player, [data-lazy-src]{display:none !important;}</style></noscript>';
}
}