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🏠 Root / home1 / immorth6 / public_html / test / wp-content / plugins / jetpack / modules / likes /

Editing: queuehandler.js

/* global pm, wpcom_reblog, JSON */

var jetpackLikesWidgetBatch = [];
var jetpackLikesMasterReady = false;

// Due to performance problems on pages with a large number of widget iframes that need to be loaded,
// we are limiting the processing at any instant to unloaded widgets that are currently in viewport,
// plus this constant that will allow processing of widgets above and bellow the current fold.
// This aim of it is to improve the UX and hide the transition from unloaded to loaded state from users.
var jetpackLikesLookAhead = 2000; // pixels

// Keeps track of loaded comment likes widget so we can unload them when they are scrolled out of view.
var jetpackCommentLikesLoadedWidgets = [];

function JetpackLikesPostMessage( message, target ) {
	if ( 'string' === typeof message ) {
		try {
			message = JSON.parse( message );
		} catch ( e ) {
			return;
		}
	}

pm( {
		target: target,
		type: 'likesMessage',
		data: message,
		origin: '*',
	} );
}

function JetpackLikesBatchHandler() {
	var requests = [];
	jQuery( 'div.jetpack-likes-widget-unloaded' ).each( function () {
		if ( jetpackLikesWidgetBatch.indexOf( this.id ) > -1 ) {
			return;
		}

if ( ! jetpackIsScrolledIntoView( this ) ) {
			return;
		}

jetpackLikesWidgetBatch.push( this.id );

var regex = /like-(post|comment)-wrapper-(\d+)-(\d+)-(\w+)/,
			match = regex.exec( this.id ),
			info;

if ( ! match || match.length !== 5 ) {
			return;
		}

info = {
			blog_id: match[ 2 ],
			width: this.width,
		};

if ( 'post' === match[ 1 ] ) {
			info.post_id = match[ 3 ];
		} else if ( 'comment' === match[ 1 ] ) {
			info.comment_id = match[ 3 ];
		}

info.obj_id = match[ 4 ];

requests.push( info );
	} );

if ( requests.length > 0 ) {
		JetpackLikesPostMessage(
			{ event: 'initialBatch', requests: requests },
			window.frames[ 'likes-master' ]
		);
	}
}

function JetpackLikesMessageListener( event, message ) {
	var allowedOrigin, $container, $list, offset, rowLength, height, scrollbarWidth;

if ( 'undefined' === typeof event.event ) {
		return;
	}

// We only allow messages from one origin
	allowedOrigin = 'https://widgets.wp.com';
	if ( allowedOrigin !== message.origin ) {
		return;
	}

switch ( event.event ) {
		case 'masterReady':
			jQuery( document ).ready( function () {
				jetpackLikesMasterReady = true;

var stylesData = {
						event: 'injectStyles',
					},
					$sdTextColor = jQuery( '.sd-text-color' ),
					$sdLinkColor = jQuery( '.sd-link-color' );

if ( jQuery( 'iframe.admin-bar-likes-widget' ).length > 0 ) {
					JetpackLikesPostMessage( { event: 'adminBarEnabled' }, window.frames[ 'likes-master' ] );

stylesData.adminBarStyles = {
						background: jQuery( '#wpadminbar .quicklinks li#wp-admin-bar-wpl-like > a' ).css(
							'background'
						),
						isRtl: 'rtl' === jQuery( '#wpadminbar' ).css( 'direction' ),
					};
				}

if ( ! window.addEventListener ) {
					jQuery( '#wp-admin-bar-admin-bar-likes-widget' ).hide();
				}

stylesData.textStyles = {
					color: $sdTextColor.css( 'color' ),
					fontFamily: $sdTextColor.css( 'font-family' ),
					fontSize: $sdTextColor.css( 'font-size' ),
					direction: $sdTextColor.css( 'direction' ),
					fontWeight: $sdTextColor.css( 'font-weight' ),
					fontStyle: $sdTextColor.css( 'font-style' ),
					textDecoration: $sdTextColor.css( 'text-decoration' ),
				};

stylesData.linkStyles = {
					color: $sdLinkColor.css( 'color' ),
					fontFamily: $sdLinkColor.css( 'font-family' ),
					fontSize: $sdLinkColor.css( 'font-size' ),
					textDecoration: $sdLinkColor.css( 'text-decoration' ),
					fontWeight: $sdLinkColor.css( 'font-weight' ),
					fontStyle: $sdLinkColor.css( 'font-style' ),
				};

JetpackLikesPostMessage( stylesData, window.frames[ 'likes-master' ] );

JetpackLikesBatchHandler();
			} );

break;

case 'showLikeWidget':
			jQuery( '#' + event.id + ' .likes-widget-placeholder' ).fadeOut( 'fast' );
			break;

case 'showCommentLikeWidget':
			jQuery( '#' + event.id + ' .likes-widget-placeholder' ).fadeOut( 'fast' );
			break;

case 'killCommentLikes':
			// If kill switch for comment likes is enabled remove all widgets wrappers and `Loading...` placeholders.
			jQuery( '.jetpack-comment-likes-widget-wrapper' ).remove();
			break;

case 'clickReblogFlair':
			wpcom_reblog.toggle_reblog_box_flair( event.obj_id );
			break;

case 'showOtherGravatars':
			$container = jQuery( '#likes-other-gravatars' );
			$list = $container.find( 'ul' );

$container.hide();
			$list.html( '' );

$container.find( '.likes-text span' ).text( event.total );

jQuery.each( event.likers, function ( i, liker ) {
				var element;

if ( 'http' !== liker.profile_URL.substr( 0, 4 ) ) {
					// We only display gravatars with http or https schema
					return;
				}

element = jQuery( '<li><a><img /></a></li>' );
				element.addClass( liker.css_class );

element
					.find( 'a' )
					.attr( {
						href: liker.profile_URL,
						rel: 'nofollow',
						target: '_parent',
					} )
					.addClass( 'wpl-liker' );

element
					.find( 'img' )
					.attr( {
						src: liker.avatar_URL,
						alt: liker.name,
					} )
					.css( {
						width: '30px',
						height: '30px',
						paddingRight: '3px',
					} );

$list.append( element );
			} );

offset = jQuery( 'body' )
				.find( "[name='" + event.parent + "']" )
				.offset();

$container.css( 'left', offset.left + event.position.left - 10 + 'px' );
			$container.css( 'top', offset.top + event.position.top - 33 + 'px' );

rowLength = Math.floor( event.width / 37 );
			height = Math.ceil( event.likers.length / rowLength ) * 37 + 13;
			if ( height > 204 ) {
				height = 204;
			}

$container.css( 'height', height + 'px' );
			$container.css( 'width', rowLength * 37 - 7 + 'px' );

$list.css( 'width', rowLength * 37 + 'px' );

$container.fadeIn( 'slow' );

scrollbarWidth = $list[ 0 ].offsetWidth - $list[ 0 ].clientWidth;
			if ( scrollbarWidth > 0 ) {
				$container.width( $container.width() + scrollbarWidth );
				$list.width( $list.width() + scrollbarWidth );
			}
	}
}

pm.bind( 'likesMessage', JetpackLikesMessageListener );

jQuery( document ).click( function ( e ) {
	var $container = jQuery( '#likes-other-gravatars' );

if ( $container.has( e.target ).length === 0 ) {
		$container.fadeOut( 'slow' );
	}
} );

function JetpackLikesWidgetQueueHandler() {
	var wrapperID;

if ( ! jetpackLikesMasterReady ) {
		setTimeout( JetpackLikesWidgetQueueHandler, 500 );
		return;
	}

// Restore widgets to initial unloaded state when they are scrolled out of view.
	jetpackUnloadScrolledOutWidgets();

var unloadedWidgetsInView = jetpackGetUnloadedWidgetsInView();

if ( unloadedWidgetsInView.length > 0 ) {
		// Grab any unloaded widgets for a batch request
		JetpackLikesBatchHandler();
	}

for ( var i = 0, length = unloadedWidgetsInView.length; i <= length - 1; i++ ) {
		wrapperID = unloadedWidgetsInView[ i ].id;

if ( ! wrapperID ) {
			continue;
		}

jetpackLoadLikeWidgetIframe( wrapperID );
	}
}

function jetpackLoadLikeWidgetIframe( wrapperID ) {
	var $wrapper;

if ( 'undefined' === typeof wrapperID ) {
		return;
	}

$wrapper = jQuery( '#' + wrapperID );
	$wrapper.find( 'iframe' ).remove();

var placeholder = $wrapper.find( '.likes-widget-placeholder' );

// Post like iframe
	if ( placeholder.hasClass( 'post-likes-widget-placeholder' ) ) {
		var postLikesFrame = document.createElement( 'iframe' );

postLikesFrame.classList.add( 'post-likes-widget', 'jetpack-likes-widget' );
		postLikesFrame.name = $wrapper.data( 'name' );
		postLikesFrame.src = $wrapper.data( 'src' );
		postLikesFrame.height = '55px';
		postLikesFrame.width = '100%';
		postLikesFrame.frameBorder = '0';
		postLikesFrame.scrolling = 'no';
		postLikesFrame.title = $wrapper.data( 'title' );

if ( $wrapper.hasClass( 'slim-likes-widget' ) ) {
			postLikesFrame.height = '22px';
			postLikesFrame.width = '68px';
			postLikesFrame.scrolling = 'no';
		}

placeholder.after( postLikesFrame );
	}

// Comment like iframe
	if ( placeholder.hasClass( 'comment-likes-widget-placeholder' ) ) {
		var commentLikesFrame = document.createElement( 'iframe' );

commentLikesFrame[ 'class' ] = 'comment-likes-widget-frame jetpack-likes-widget-frame';
		commentLikesFrame.name = $wrapper.data( 'name' );
		commentLikesFrame.src = $wrapper.data( 'src' );
		commentLikesFrame.height = '18px';
		commentLikesFrame.width = '100%';
		commentLikesFrame.frameBorder = '0';
		commentLikesFrame.scrolling = 'no';

$wrapper.find( '.comment-like-feedback' ).after( commentLikesFrame );

jetpackCommentLikesLoadedWidgets.push( commentLikesFrame );
	}

$wrapper
		.removeClass( 'jetpack-likes-widget-unloaded' )
		.addClass( 'jetpack-likes-widget-loading' );

$wrapper.find( 'iframe' ).load( function ( e ) {
		var $iframe = jQuery( e.target );

JetpackLikesPostMessage(
			{ event: 'loadLikeWidget', name: $iframe.attr( 'name' ), width: $iframe.width() },
			window.frames[ 'likes-master' ]
		);

$wrapper
			.removeClass( 'jetpack-likes-widget-loading' )
			.addClass( 'jetpack-likes-widget-loaded' );

if ( $wrapper.hasClass( 'slim-likes-widget' ) ) {
			$wrapper.find( 'iframe' ).Jetpack( 'resizeable' );
		}
	} );
}

function jetpackGetUnloadedWidgetsInView() {
	var $unloadedWidgets = jQuery( 'div.jetpack-likes-widget-unloaded' );

return $unloadedWidgets.filter( function () {
		return jetpackIsScrolledIntoView( this );
	} );
}

function jetpackIsScrolledIntoView( element ) {
	var top = element.getBoundingClientRect().top;
	var bottom = element.getBoundingClientRect().bottom;

// Allow some slack above and bellow the fold with jetpackLikesLookAhead,
	// with the aim of hiding the transition from unloaded to loaded widget from users.
	return top + jetpackLikesLookAhead >= 0 && bottom <= window.innerHeight + jetpackLikesLookAhead;
}

function jetpackUnloadScrolledOutWidgets() {
	for ( var i = jetpackCommentLikesLoadedWidgets.length - 1; i >= 0; i-- ) {
		var currentWidgetIframe = jetpackCommentLikesLoadedWidgets[ i ];

if ( ! jetpackIsScrolledIntoView( currentWidgetIframe ) ) {
			var $widgetWrapper = jQuery( currentWidgetIframe ).parent().parent();

// Restore parent class to 'unloaded' so this widget can be picked up by queue manager again if needed.
			$widgetWrapper
				.removeClass( 'jetpack-likes-widget-loaded jetpack-likes-widget-loading' )
				.addClass( 'jetpack-likes-widget-unloaded' );

// Bring back the loading placeholder into view.
			$widgetWrapper.children( '.comment-likes-widget-placeholder' ).fadeIn();

// Remove it from the list of loaded widgets.
			jetpackCommentLikesLoadedWidgets.splice( i, 1 );

// Remove comment like widget iFrame.
			jQuery( currentWidgetIframe ).remove();
		}
	}
}

var jetpackWidgetsDelayedExec = function ( after, fn ) {
	var timer;
	return function () {
		timer && clearTimeout( timer );
		timer = setTimeout( fn, after );
	};
};

var jetpackOnScrollStopped = jetpackWidgetsDelayedExec( 250, JetpackLikesWidgetQueueHandler );

// Load initial batch of widgets, prior to any scrolling events.
JetpackLikesWidgetQueueHandler();

// Add event listener to execute queue handler after scroll.
window.addEventListener( 'scroll', jetpackOnScrollStopped, true );