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<?php
defined( 'ABSPATH' ) || die( 'Cheatin’ uh?' );
/**
* Add lazyload options to the footer
*
* @since 2.11 load options in the footer and add filter for the treshold
* @since 1.3.5 It's possible to exclude LazyLoad process by used do_rocket_lazyload filter
* @since 1.1.0 This code is insert in head with inline script for more performance
* @since 1.0
*/
function rocket_lazyload_script() {
if ( ( defined( 'DONOTROCKETOPTIMIZE' ) && DONOTROCKETOPTIMIZE ) ) {
return;
}
if ( ( ! get_rocket_option( 'lazyload' ) && ! get_rocket_option( 'lazyload_iframes' ) ) || ( ! apply_filters( 'do_rocket_lazyload', true ) && ! apply_filters( 'do_rocket_lazyload_iframes', true ) ) ) {
return;
}
$suffix = defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG ? '' : '.min';
/**
* Filters the threshold at which lazyload is triggered
*
* @since 2.11
* @author Remy Perona
*
* @param int $threshold Threshold value.
*/
$threshold = apply_filters( 'rocket_lazyload_threshold', 300 );
echo '<script>(function(w, d){
var b = d.getElementsByTagName("body")[0];
var s = d.createElement("script"); s.async = true;
var v = !("IntersectionObserver" in w) ? "8.5.2" : "10.3.5";
s.src = "' . get_rocket_cdn_url( WP_ROCKET_FRONT_JS_URL, array( 'all', 'css_and_js', 'js' ) ) . 'lazyload-" + v + "' . $suffix . '.js";
w.lazyLoadOptions = {
elements_selector: "img, iframe",
data_src: "lazy-src",
data_srcset: "lazy-srcset",
skip_invisible: false,
class_loading: "lazyloading",
class_loaded: "lazyloaded",
threshold: ' . $threshold . ',
callback_load: 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();
}
}
}
}
}
}; // Your options here. See "recipes" for more information about async.
b.appendChild(s);
}(window, document));
// Listen to the Initialized event
window.addEventListener(\'LazyLoad::Initialized\', function (e) {
// Get the instance and puts it in the lazyLoadInstance variable
var lazyLoadInstance = e.detail.instance;
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(mutation) {
lazyLoadInstance.update();
} );
} );
var b = document.getElementsByTagName("body")[0];
var config = { childList: true, subtree: true };
observer.observe(b, config);
}, false);
</script>';
if ( get_rocket_option( 'lazyload_youtube' ) ) {
/**
* Filters the resolution of the YouTube thumbnail
*
* @since 2.11.5
* @author Arun Basil Lal
*
* @param string $thumbnail_resolution The resolution of the thumbnail. Accepted values: default, mqdefault, sddefault, hqdefault, maxresdefault
*/
$thumbnail_resolution = apply_filters( 'rocket_youtube_thumbnail_resolution', 'hqdefault');
echo <<<HTML
<script>function lazyLoadThumb(e){var t='<img src="https://i.ytimg.com/vi/ID/$thumbnail_resolution.jpg">',a='<div class="play"></div>';return t.replace("ID",e)+a}function lazyLoadYoutubeIframe(){var e=document.createElement("iframe"),t="https://www.youtube.com/embed/ID?autoplay=1";e.setAttribute("src",t.replace("ID",this.dataset.id)),e.setAttribute("frameborder","0"),e.setAttribute("allowfullscreen","1"),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.innerHTML=lazyLoadThumb(a[t].dataset.id),e.onclick=lazyLoadYoutubeIframe,a[t].appendChild(e)});</script>
HTML;
}
}
add_action( 'wp_footer', 'rocket_lazyload_script', PHP_INT_MAX );
/**
* Enqueue the CSS code for Youtube lazyload styling
*
* @since 2.11
* @author Remy Perona
*/
function rocket_lazyload_enqueue() {
if ( ( defined( 'DONOTROCKETOPTIMIZE' ) && DONOTROCKETOPTIMIZE ) ) {
return;
}
if ( ( ! get_rocket_option( 'lazyload_iframes' ) ) || ( ! apply_filters( 'do_rocket_lazyload', true ) && ! apply_filters( 'do_rocket_lazyload_iframes', true ) ) ) {
return;
}
if ( get_rocket_option( 'lazyload_youtube' ) ) {
$css = '.rll-youtube-player{position:relative;padding-bottom:56.23%;height:0;overflow:hidden;max-width:100%;background:#000;margin:5px}.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(' . WP_ROCKET_FRONT_URL . 'img/play.png) no-repeat;cursor:pointer}';
wp_register_style( 'rocket-lazyload', false );
wp_enqueue_style( 'rocket-lazyload' );
wp_add_inline_style( 'rocket-lazyload', $css );
}
}
add_action( 'wp_enqueue_scripts', 'rocket_lazyload_enqueue', PHP_INT_MAX );
/**
* Replace Gravatar, thumbnails, images in post content and in widget text by LazyLoad
*
* @since 2.6 Add the get_image_tag filter
* @since 2.2 Better regex pattern in a replace_callback
* @since 1.3.5 It's possible to exclude LazyLoad process by used do_rocket_lazyload filter
* @since 1.2.0 It's possible to not lazyload an image with data-no-lazy attribute
* @since 1.1.0 Don't lazyload if the thumbnail has already been run through previously
* @since 1.0.1 Add priority of hooks at maximum later with PHP_INT_MAX
* @since 1.0
*
* @param string $html HTML content.
* @return string Modified HTML content
*/
function rocket_lazyload_images( $html ) {
// Don't LazyLoad if process is stopped for these reasons.
if ( ! get_rocket_option( 'lazyload' ) || ! apply_filters( 'do_rocket_lazyload', true ) || is_feed() || is_preview() || ( defined( 'REST_REQUEST' ) && REST_REQUEST ) || ( defined( 'DONOTROCKETOPTIMIZE' ) && DONOTROCKETOPTIMIZE ) || empty( $html ) || ( defined( 'DONOTLAZYLOAD' ) && DONOTLAZYLOAD ) || wp_script_is( 'twentytwenty-twentytwenty', 'enqueued' ) ) {
return $html;
}
$html = preg_replace_callback( '#<img([^>]*) src=("(?:[^"]+)"|\'(?:[^\']+)\'|(?:[^ >]+))([^>]*)>#', 'rocket_lazyload_replace_callback', $html );
return $html;
}
add_filter( 'get_avatar', 'rocket_lazyload_images', PHP_INT_MAX );
add_filter( 'the_content', 'rocket_lazyload_images', PHP_INT_MAX );
add_filter( 'widget_text', 'rocket_lazyload_images', PHP_INT_MAX );
add_filter( 'get_image_tag', 'rocket_lazyload_images', PHP_INT_MAX );
add_filter( 'post_thumbnail_html', 'rocket_lazyload_images', PHP_INT_MAX );
/**
* Used to check if we have to LazyLoad this or not
*
* @since 2.5.5 Don't apply LazyLoad on images from WP Retina x2
* @since 2.5 Don't apply LazyLoad on all images from LayerSlider
* @since 2.4.2 Don't apply LazyLoad on all images from Media Grid
* @since 2.3.11 Don't apply LazyLoad on all images from Timthumb
* @since 2.3.10 Don't apply LazyLoad on all images from Revolution Slider & Justified Image Grid
* @since 2.3.8 Don't apply LazyLoad on captcha from Really Simple CAPTCHA
* @since 2.2
*
* @param array $matches Images matching the regex.
* @return string Modified HTML content
*/
function rocket_lazyload_replace_callback( $matches ) {
// Don't apply LazyLoad on images from WP Retina x2.
if ( function_exists( 'wr2x_picture_rewrite' ) ) {
if ( wr2x_get_retina( trailingslashit( ABSPATH ) . wr2x_get_pathinfo_from_image_src( trim( $matches[2], '"' ) ) ) ) {
return $matches[0];
}
}
/**
* Filters the attributes used to prevent lazylad from being applied
*
* @since 2.11
* @author Remy Perona
*
* @param array $excluded_attributes An array of excluded attributes.
*/
$excluded_attributes = apply_filters(
'rocket_lazyload_excluded_attributes', array(
'data-src=',
'data-no-lazy=',
'data-lazy-original=',
'data-lazy-src=',
'data-lazysrc=',
'data-lazyload=',
'data-bgposition=',
'data-envira-src=',
'fullurl=',
'lazy-slider-img=',
'data-srcset=',
'class="ls-l',
'class="ls-bg',
)
);
/**
* Filters the src used to prevent lazylad from being applied
*
* @since 2.11
* @author Remy Perona
*
* @param array $excluded_src An array of excluded src.
*/
$excluded_src = apply_filters(
'rocket_lazyload_excluded_src', array(
'/wpcf7_captcha/',
'timthumb.php?src',
)
);
if ( rocket_is_excluded_lazyload( $matches[1] . $matches[3], $excluded_attributes ) || rocket_is_excluded_lazyload( $matches[2], $excluded_src ) ) {
return $matches[0];
}
/**
* Filter the LazyLoad placeholder on src attribute
*
* @since 1.1
*
* @param string $placeholder Placeholder that will be printed.
*/
$placeholder = apply_filters( 'rocket_lazyload_placeholder', 'data:image/gif;base64,R0lGODdhAQABAPAAAP///wAAACwAAAAAAQABAEACAkQBADs=' );
$html = sprintf( '<img%1$s src="%4$s" data-lazy-src=%2$s%3$s>', $matches[1], $matches[2], $matches[3], $placeholder );
$html_noscript = sprintf( '<noscript><img%1$s src=%2$s%3$s></noscript>', $matches[1], $matches[2], $matches[3] );
/**
* Filter the LazyLoad HTML output
*
* @since 1.0.2
*
* @param array $html Output that will be printed
*/
$html = apply_filters( 'rocket_lazyload_html', $html, true );
return $html . $html_noscript;
}
/**
* Determine if the current image should be excluded from lazyload
*
* @since 1.1
* @author Remy Perona
*
* @param string $string String to search.
* @param array $excluded_values Array of excluded values to search in the string.
* @return bool True if one of the excluded values was found, false otherwise
*/
function rocket_is_excluded_lazyload( $string, $excluded_values ) {
foreach ( $excluded_values as $excluded_value ) {
if ( strpos( $string, $excluded_value ) !== false ) {
return true;
}
}
return false;
}
/**
* Replace WordPress smilies by Lazy Load
*
* @since 2.0 New system for replace smilies by Lazy Load
* @since 1.3.5 It's possible to exclude LazyLoad process by used do_rocket_lazyload filter
* @since 1.1.0 Don't lazy-load if the thumbnail has already been run through previously
* @since 1.0.1 Add priority of hooks at maximum later with PHP_INT_MAX
* @since 1.0
*/
function rocket_lazyload_smilies() {
if ( ! get_rocket_option( 'lazyload' ) || ! apply_filters( 'do_rocket_lazyload', true, 'smilies' ) || ( defined( 'DONOTROCKETOPTIMIZE' ) && DONOTROCKETOPTIMIZE ) || ( defined( 'DONOTLAZYLOAD' ) && DONOTLAZYLOAD ) ) {
return;
}
remove_filter( 'the_content', 'convert_smilies' );
remove_filter( 'the_excerpt', 'convert_smilies' );
remove_filter( 'comment_text', 'convert_smilies', 20 );
add_filter( 'the_content', 'rocket_convert_smilies' );
add_filter( 'the_excerpt', 'rocket_convert_smilies' );
add_filter( 'comment_text', 'rocket_convert_smilies', 20 );
}
add_action( 'init', 'rocket_lazyload_smilies' );
/**
* Convert text equivalent of smilies to images.
*
* @source convert_smilies() in /wp-includes/formattings.php
* @since 2.0
*
* @param string $text Text to process.
* @return string Modified text
*/
function rocket_convert_smilies( $text ) {
global $wp_smiliessearch;
$output = '';
if ( get_option( 'use_smilies' ) && ! empty( $wp_smiliessearch ) ) {
// HTML loop taken from texturize function, could possible be consolidated.
$textarr = preg_split( '/(<.*>)/U', $text, -1, PREG_SPLIT_DELIM_CAPTURE ); // capture the tags as well as in between.
$stop = count( $textarr );// loop stuff.
// Ignore proessing of specific tags.
$tags_to_ignore = 'code|pre|style|script|textarea';
$ignore_block_element = '';
for ( $i = 0; $i < $stop; $i++ ) {
$content = $textarr[ $i ];
// If we're in an ignore block, wait until we find its closing tag.
if ( '' === $ignore_block_element && preg_match( '/^<(' . $tags_to_ignore . ')>/', $content, $matches ) ) {
$ignore_block_element = $matches[1];
}
// If it's not a tag and not in ignore block.
if ( '' === $ignore_block_element && strlen( $content ) > 0 && '<' !== $content[0] ) {
$content = preg_replace_callback( $wp_smiliessearch, 'rocket_translate_smiley', $content );
}
// did we exit ignore block.
if ( '' !== $ignore_block_element && '</' . $ignore_block_element . '>' === $content ) {
$ignore_block_element = '';
}
$output .= $content;
}
} else {
// return default text.
$output = $text;
}
return $output;
}
/**
* Convert one smiley code to the icon graphic file equivalent.
*
* @source translate_smiley() in /wp-includes/formattings.php
* @since 2.0
*
* @param array $matches An array of matching content.
* @return string HTML code for smiley
*/
function rocket_translate_smiley( $matches ) {
global $wpsmiliestrans;
if ( count( $matches ) === 0 ) {
return '';
}
$smiley = trim( reset( $matches ) );
$img = $wpsmiliestrans[ $smiley ];
$matches = array();
$ext = preg_match( '/\.([^.]+)$/', $img, $matches ) ? strtolower( $matches[1] ) : false;
$image_exts = array( 'jpg', 'jpeg', 'jpe', 'gif', 'png' );
// Don't convert smilies that aren't images - they're probably emoji.
if ( ! in_array( $ext, $image_exts, true ) ) {
return $img;
}
/**
* Filter the Smiley image URL before it's used in the image element.
*
* @since 2.9.0
*
* @param string $smiley_url URL for the smiley image.
* @param string $img Filename for the smiley image.
* @param string $site_url Site URL, as returned by site_url().
*/
$src_url = apply_filters( 'smilies_src', includes_url( "images/smilies/$img" ), $img, site_url() );
// Don't LazyLoad if process is stopped for these reasons.
if ( ! is_feed() && ! is_preview() ) {
/** This filter is documented in inc/front/lazyload.php */
$placeholder = apply_filters( 'rocket_lazyload_placeholder', 'data:image/gif;base64,R0lGODdhAQABAPAAAP///wAAACwAAAAAAQABAEACAkQBADs=' );
return sprintf( ' <img src="%s" data-lazy-src="%s" alt="%s" class="wp-smiley" /> ', $placeholder, esc_url( $src_url ), esc_attr( $smiley ) );
} else {
return sprintf( ' <img src="%s" alt="%s" class="wp-smiley" /> ', esc_url( $src_url ), esc_attr( $smiley ) );
}
}
/**
* Replace iframes by LazyLoad
*
* @since 2.6
*
* @param string $html HTML content.
* @return string Modified HTML content
*/
function rocket_lazyload_iframes( $html ) {
// Don't LazyLoad if process is stopped for these reasons.
if ( ! get_rocket_option( 'lazyload_iframes' ) || ! apply_filters( 'do_rocket_lazyload_iframes', true ) || is_feed() || is_preview() || ( defined( 'REST_REQUEST' ) && REST_REQUEST ) || empty( $html ) || ( defined( 'DONOTROCKETOPTIMIZE' ) && DONOTROCKETOPTIMIZE ) || ( defined( 'DONOTLAZYLOAD' ) && DONOTLAZYLOAD ) ) {
return $html;
}
$matches = array();
preg_match_all( '/<iframe(?:\s.*)?\ssrc=["\'](.*)["\'](.*)><\/iframe>/iU', $html, $matches, PREG_SET_ORDER );
if ( empty( $matches ) ) {
return $html;
}
foreach ( $matches as $iframe ) {
// Don't mess with the Gravity Forms ajax iframe.
if ( strpos( $iframe[0], 'gform_ajax_frame' ) ) {
continue;
}
// Don't lazyload if iframe has data-no-lazy attribute.
if ( strpos( $iframe[0], 'data-no-lazy=' ) ) {
continue;
}
if ( get_rocket_option( 'lazyload_youtube' ) && false !== strpos( $iframe[1], 'youtube' ) ) {
$youtube_id = rocket_lazyload_get_youtube_id_from_url( $iframe[1] );
if ( ! $youtube_id ) {
continue;
}
/**
* Filter the LazyLoad HTML output on Youtube iframes
*
* @since 2.11
*
* @param array $html Output that will be printed.
*/
$youtube_lazyload = apply_filters( 'rocket_lazyload_youtube_html', '<div class="rll-youtube-player" data-id="' . $youtube_id . '"></div>' );
$youtube_lazyload .= '<noscript>' . $iframe[0] . '</noscript>';
$html = str_replace( $iframe[0], $youtube_lazyload, $html );
} else {
/**
* Filter the LazyLoad placeholder on src attribute
*
* @since 2.11
*
* @param string $placeholder placeholder that will be printed.
*/
$placeholder = apply_filters( 'rocket_lazyload_placeholder', 'about:blank' );
$iframe_noscript = '<noscript>' . $iframe[0] . '</noscript>';
$iframe_lazyload = str_replace( $iframe[1], $placeholder, $iframe[0] );
/**
* Filter the LazyLoad HTML output on iframes
*
* @since 2.11
*
* @param array $html Output that will be printed.
*/
$iframe_lazyload = apply_filters( 'rocket_lazyload_iframe_html', str_replace( $iframe[2], $iframe[2] . ' data-rocket-lazyload="fitvidscompatible" data-lazy-src="' . $iframe[1] . '"', $iframe[0] ) );
$iframe_lazyload .= $iframe_noscript;
$html = str_replace( $iframe[0], $iframe_lazyload, $html );
}
}
return $html;
}
add_filter( 'rocket_buffer', 'rocket_lazyload_iframes', PHP_INT_MAX );
/**
* Check if we need to exclude LazyLoad on specific posts
*
* @since 2.5
*/
function rocket_deactivate_lazyload_on_specific_posts() {
if ( is_rocket_post_excluded_option( 'lazyload' ) ) {
add_filter( 'do_rocket_lazyload', '__return_false' );
}
if ( is_rocket_post_excluded_option( 'lazyload_iframes' ) ) {
add_filter( 'do_rocket_lazyload_iframes', '__return_false' );
}
}
add_action( 'wp', 'rocket_deactivate_lazyload_on_specific_posts' );
/**
* Compatibility with images with srcset attribute
*
* @author Remy Perona
*
* @since 2.8 Also add sizes to the data-lazy-* attributes to prevent error in W3C validator
* @since 2.7
*
* @param string $html HTML content.
* @return string Modified HTML content
*/
function rocket_lazyload_on_srcset( $html ) {
if ( preg_match( '/srcset=("(?:[^"]+)"|\'(?:[^\']+)\'|(?:[^ >]+))/i', $html ) ) {
$html = str_replace( 'srcset=', 'data-lazy-srcset=', $html );
}
/**
* Remove this until the lazyload script is updated to handle sizes.
* if ( preg_match( '/sizes=("(?:[^"]+)"|\'(?:[^\']+)\'|(?:[^ >]+))/i', $html ) ) {
* $html = str_replace( 'sizes=', 'data-lazy-sizes=', $html );
* }
*/
return $html;
}
add_filter( 'rocket_lazyload_html', 'rocket_lazyload_on_srcset' );
/**
* Gets youtube video ID from URL
*
* @author Remy Perona
* @since 2.11
*
* @param string $url URL to parse.
* @return string Youtube video id or false if none found.
*/
function rocket_lazyload_get_youtube_id_from_url( $url ) {
$pattern = '#^(?:https?://)?(?:www\.)?(?:youtu\.be/|youtube\.com(?:/embed/|/v/|/watch\?v=))([\w-]{11})#iU';
$result = preg_match( $pattern, $url, $matches );
if ( $result ) {
return $matches[1];
}
return false;
}
Zerion Mini Shell 1.0