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/* jshint onevar: false */
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/* globals related_posts_js_options */
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/**
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* Load related posts
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*/
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( function( $ ) {
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var jprp = {
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response: null,
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/**
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* Utility get related posts JSON endpoint from URLs
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*
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* @param {string} URL (optional)
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* @return {string} Endpoint URL
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*/
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getEndpointURL: function( URL ) {
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var locationObject,
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is_customizer =
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'undefined' !== typeof wp &&
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wp.customize &&
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wp.customize.settings &&
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wp.customize.settings.url &&
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wp.customize.settings.url.self;
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// If we're in Customizer, write the correct URL.
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if ( is_customizer ) {
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locationObject = document.createElement( 'a' );
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locationObject.href = wp.customize.settings.url.self;
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} else {
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locationObject = document.location;
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}
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if ( 'string' === typeof URL && URL.match( /^https?:\/\// ) ) {
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locationObject = document.createElement( 'a' );
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locationObject.href = URL;
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}
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var args = 'relatedposts=1';
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if ( $( '#jp-relatedposts' ).data( 'exclude' ) ) {
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args += '&relatedposts_exclude=' + $( '#jp-relatedposts' ).data( 'exclude' );
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}
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if ( is_customizer ) {
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args += '&jetpackrpcustomize=1';
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}
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var pathname = locationObject.pathname;
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if ( '/' !== pathname[ 0 ] ) {
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pathname = '/' + pathname;
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}
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if ( '' === locationObject.search ) {
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return pathname + '?' + args;
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} else {
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return pathname + locationObject.search + '&' + args;
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}
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},
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getAnchor: function( post, classNames ) {
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var anchor_title = post.title;
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if ( '' !== '' + post.excerpt ) {
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anchor_title += '\n\n' + post.excerpt;
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}
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var anchor = $( '<a>' );
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anchor.attr( {
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class: classNames,
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href: post.url,
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title: anchor_title,
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rel: post.rel,
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'data-origin': post.url_meta.origin,
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'data-position': post.url_meta.position,
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} );
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var anchor_html = $( '<div>' )
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.append( anchor )
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.html();
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return [ anchor_html.substring( 0, anchor_html.length - 4 ), '</a>' ];
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},
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generateMinimalHtml: function( posts, options ) {
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var self = this;
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var html = '';
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$.each( posts, function( index, post ) {
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var anchor = self.getAnchor( post, 'jp-relatedposts-post-a' );
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var classes = 'jp-relatedposts-post jp-relatedposts-post' + index;
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if ( post.classes.length > 0 ) {
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classes += ' ' + post.classes.join( ' ' );
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}
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html +=
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'<p class="' +
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classes +
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'" data-post-id="' +
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post.id +
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'" data-post-format="' +
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post.format +
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'">';
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html +=
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'<span class="jp-relatedposts-post-title">' +
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anchor[ 0 ] +
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post.title +
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anchor[ 1 ] +
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'</span>';
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if ( options.showDate ) {
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html += '<span class="jp-relatedposts-post-date">' + post.date + '</span>';
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}
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if ( options.showContext ) {
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html += '<span class="jp-relatedposts-post-context">' + post.context + '</span>';
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}
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html += '</p>';
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} );
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return (
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'<div class="jp-relatedposts-items jp-relatedposts-items-minimal jp-relatedposts-' +
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options.layout +
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' ">' +
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html +
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'</div>'
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);
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},
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generateVisualHtml: function( posts, options ) {
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var self = this;
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var html = '';
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$.each( posts, function( index, post ) {
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var anchor = self.getAnchor( post, 'jp-relatedposts-post-a' );
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var classes = 'jp-relatedposts-post jp-relatedposts-post' + index;
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if ( post.classes.length > 0 ) {
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classes += ' ' + post.classes.join( ' ' );
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}
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if ( ! post.img.src ) {
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classes += ' jp-relatedposts-post-nothumbs';
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} else {
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classes += ' jp-relatedposts-post-thumbs';
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}
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html +=
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'<div class="' +
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classes +
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'" data-post-id="' +
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post.id +
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'" data-post-format="' +
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post.format +
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'">';
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if ( post.img.src ) {
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html +=
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anchor[ 0 ] +
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'<img class="jp-relatedposts-post-img" src="' +
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post.img.src +
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'" width="' +
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post.img.width +
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'" alt="' +
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post.title +
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'" />' +
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anchor[ 1 ];
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} else {
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var anchor_overlay = self.getAnchor(
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post,
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'jp-relatedposts-post-a jp-relatedposts-post-aoverlay'
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);
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html += anchor_overlay[ 0 ] + anchor_overlay[ 1 ];
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}
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html +=
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'<' +
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related_posts_js_options.post_heading +
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' class="jp-relatedposts-post-title">' +
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anchor[ 0 ] +
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post.title +
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anchor[ 1 ] +
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'</' +
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related_posts_js_options.post_heading +
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'>';
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html +=
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'<p class="jp-relatedposts-post-excerpt">' +
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$( '<p>' )
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.text( post.excerpt )
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.html() +
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'</p>';
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if ( options.showDate ) {
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html += '<p class="jp-relatedposts-post-date">' + post.date + '</p>';
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}
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if ( options.showContext ) {
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html += '<p class="jp-relatedposts-post-context">' + post.context + '</p>';
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}
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html += '</div>';
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} );
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return (
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'<div class="jp-relatedposts-items jp-relatedposts-items-visual jp-relatedposts-' +
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options.layout +
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' ">' +
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html +
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'</div>'
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);
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},
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/**
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* We want to set a max height on the excerpt however we want to set
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* this according to the natual pacing of the page as we never want to
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* cut off a line of text in the middle so we need to do some detective
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* work.
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*/
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setVisualExcerptHeights: function() {
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var elements = $(
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'#jp-relatedposts .jp-relatedposts-post-nothumbs .jp-relatedposts-post-excerpt'
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);
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if ( 0 >= elements.length ) {
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return;
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}
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var fontSize = parseInt( elements.first().css( 'font-size' ), 10 ),
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lineHeight = parseInt( elements.first().css( 'line-height' ), 10 );
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// Show 5 lines of text
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elements.css( 'max-height', ( 5 * lineHeight ) / fontSize + 'em' );
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},
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getTrackedUrl: function( anchor ) {
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var args = 'relatedposts_hit=1';
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args += '&relatedposts_origin=' + $( anchor ).data( 'origin' );
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args += '&relatedposts_position=' + $( anchor ).data( 'position' );
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var pathname = anchor.pathname;
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if ( '/' !== pathname[ 0 ] ) {
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pathname = '/' + pathname;
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}
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if ( '' === anchor.search ) {
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return pathname + '?' + args;
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} else {
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return pathname + anchor.search + '&' + args;
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}
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},
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cleanupTrackedUrl: function() {
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if ( 'function' !== typeof history.replaceState ) {
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return;
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}
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var cleaned_search = document.location.search.replace(
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/\brelatedposts_[a-z]+=[0-9]*&?\b/gi,
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''
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);
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if ( '?' === cleaned_search ) {
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cleaned_search = '';
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}
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if ( document.location.search !== cleaned_search ) {
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history.replaceState( {}, document.title, document.location.pathname + cleaned_search );
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}
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},
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};
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function afterPostsHaveLoaded() {
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jprp.setVisualExcerptHeights();
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$( '#jp-relatedposts a.jp-relatedposts-post-a' ).click( function() {
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this.href = jprp.getTrackedUrl( this );
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} );
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}
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/**
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* Initialize Related Posts.
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*/
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function startRelatedPosts() {
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jprp.cleanupTrackedUrl();
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var endpointURL = jprp.getEndpointURL(),
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$relatedPosts = $( '#jp-relatedposts' );
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if ( $( '#jp-relatedposts .jp-relatedposts-post' ).length ) {
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afterPostsHaveLoaded();
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return;
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}
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$.getJSON( endpointURL, function( response ) {
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if ( 0 === response.items.length || 0 === $relatedPosts.length ) {
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return;
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}
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jprp.response = response;
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var html,
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showThumbnails,
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options = {};
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if ( 'undefined' !== typeof wp && wp.customize ) {
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showThumbnails = wp.customize.instance( 'jetpack_relatedposts[show_thumbnails]' ).get();
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options.showDate = wp.customize.instance( 'jetpack_relatedposts[show_date]' ).get();
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options.showContext = wp.customize.instance( 'jetpack_relatedposts[show_context]' ).get();
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options.layout = wp.customize.instance( 'jetpack_relatedposts[layout]' ).get();
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} else {
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showThumbnails = response.show_thumbnails;
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options.showDate = response.show_date;
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options.showContext = response.show_context;
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options.layout = response.layout;
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}
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html = ! showThumbnails
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? jprp.generateMinimalHtml( response.items, options )
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: jprp.generateVisualHtml( response.items, options );
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$relatedPosts.append( html );
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if ( options.showDate ) {
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$relatedPosts.find( '.jp-relatedposts-post-date' ).show();
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}
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$relatedPosts.show();
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afterPostsHaveLoaded();
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} );
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}
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$( function() {
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if ( 'undefined' !== typeof wp && wp.customize ) {
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if ( wp.customize.selectiveRefresh ) {
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wp.customize.selectiveRefresh.bind( 'partial-content-rendered', function( placement ) {
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if ( 'jetpack_relatedposts' === placement.partial.id ) {
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startRelatedPosts();
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}
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} );
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}
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wp.customize.bind( 'preview-ready', startRelatedPosts );
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} else {
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startRelatedPosts();
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}
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} );
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} )( jQuery );
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