This repository has been archived on 2022-08-01. You can view files and clone it, but cannot push or open issues or pull requests.
Oldphaloskepsis/plugins/jetpack/modules/related-posts/related-posts.js

203 lines
6.1 KiB
JavaScript
Raw Normal View History

2017-01-12 23:10:07 +00:00
/* jshint onevar: false */
/* globals related_posts_js_options */
/**
* Load related posts
*/
(function($) {
var jprp = {
response: null,
/**
* Utility get related posts JSON endpoint from URLs
*
* @param string URL (optional)
* @return string endpoint URL
*/
getEndpointURL: function( URL ) {
var locationObject = document.location;
if ( 'string' === typeof( URL ) && URL.match( /^https?:\/\// ) ) {
locationObject = document.createElement( 'a' );
locationObject.href = URL;
}
var args = 'relatedposts=1';
if ( $( '#jp-relatedposts' ).data( 'exclude' ) ) {
args += '&relatedposts_exclude=' + $( '#jp-relatedposts' ).data( 'exclude' );
}
var pathname = locationObject.pathname;
if ( '/' !== pathname[0] ) {
pathname = '/' + pathname;
}
if ( '' === locationObject.search ) {
return pathname + '?' + args;
} else {
return pathname + locationObject.search + '&' + args;
}
},
getAnchor: function( post, classNames ) {
var anchor_title = post.title;
if ( '' !== ( '' + post.excerpt ) ) {
anchor_title += '\n\n' + post.excerpt;
}
var anchor = $( '<a>' );
anchor.attr({
'class': classNames,
'href': post.url,
'title': anchor_title,
'rel': post.rel,
'data-origin': post.url_meta.origin,
'data-position': post.url_meta.position
});
var anchor_html = $( '<div>' ).append( anchor ).html();
return [
anchor_html.substring( 0, anchor_html.length-4 ),
'</a>'
];
},
generateMinimalHtml: function( posts ) {
var self = this;
var html = '';
$.each( posts, function( index, post ) {
var anchor = self.getAnchor( post, 'jp-relatedposts-post-a' );
var classes = 'jp-relatedposts-post jp-relatedposts-post' + index;
if ( post.classes.length > 0 ) {
classes += ' ' + post.classes.join( ' ' );
}
html += '<p class="' + classes + '" data-post-id="' + post.id + '" data-post-format="' + post.format + '">';
html += '<span class="jp-relatedposts-post-title">' + anchor[0] + post.title + anchor[1] + '</span>';
html += '<span class="jp-relatedposts-post-date">' + post.date + '</span>';
html += '<span class="jp-relatedposts-post-context">' + post.context + '</span>';
html += '</p>';
} );
return '<div class="jp-relatedposts-items jp-relatedposts-items-minimal">' + html + '</div>';
},
generateVisualHtml: function( posts ) {
var self = this;
var html = '';
$.each( posts, function( index, post ) {
var anchor = self.getAnchor( post, 'jp-relatedposts-post-a' );
var classes = 'jp-relatedposts-post jp-relatedposts-post' + index;
if ( post.classes.length > 0 ) {
classes += ' ' + post.classes.join( ' ' );
}
if ( ! post.img.src ) {
classes += ' jp-relatedposts-post-nothumbs';
} else {
classes += ' jp-relatedposts-post-thumbs';
}
html += '<div class="' + classes + '" data-post-id="' + post.id + '" data-post-format="' + post.format + '">';
if ( post.img.src ) {
html += anchor[0] + '<img class="jp-relatedposts-post-img" src="' + post.img.src + '" width="' + post.img.width + '" alt="' + post.title + '" />' + anchor[1];
} else {
var anchor_overlay = self.getAnchor( post, 'jp-relatedposts-post-a jp-relatedposts-post-aoverlay' );
html += anchor_overlay[0] + anchor_overlay[1];
}
html += '<' + related_posts_js_options.post_heading + ' class="jp-relatedposts-post-title">' + anchor[0] + post.title + anchor[1] + '</' + related_posts_js_options.post_heading + '>';
html += '<p class="jp-relatedposts-post-excerpt">' + $( '<p>' ).text( post.excerpt ).html() + '</p>';
html += '<p class="jp-relatedposts-post-date">' + post.date + '</p>';
html += '<p class="jp-relatedposts-post-context">' + post.context + '</p>';
html += '</div>';
} );
return '<div class="jp-relatedposts-items jp-relatedposts-items-visual">' + html + '</div>';
},
/**
* We want to set a max height on the excerpt however we want to set
* this according to the natual pacing of the page as we never want to
* cut off a line of text in the middle so we need to do some detective
* work.
*/
setVisualExcerptHeights: function() {
var elements = $( '#jp-relatedposts .jp-relatedposts-post-nothumbs .jp-relatedposts-post-excerpt' );
if ( 0 >= elements.length ) {
return;
}
var fontSize = parseInt( elements.first().css( 'font-size' ), 10 ),
lineHeight = parseInt( elements.first().css( 'line-height' ), 10 );
// Show 5 lines of text
elements.css(
'max-height',
( 5 * lineHeight / fontSize ) + 'em'
);
},
getTrackedUrl: function( anchor ) {
var args = 'relatedposts_hit=1';
args += '&relatedposts_origin=' + $( anchor ).data( 'origin' );
args += '&relatedposts_position=' + $( anchor ).data( 'position' );
var pathname = anchor.pathname;
if ( '/' !== pathname[0] ) {
pathname = '/' + pathname;
}
if ( '' === anchor.search ) {
return pathname + '?' + args;
} else {
return pathname + anchor.search + '&' + args;
}
},
cleanupTrackedUrl: function() {
if ( 'function' !== typeof history.replaceState ) {
return;
}
var cleaned_search = document.location.search.replace( /\brelatedposts_[a-z]+=[0-9]*&?\b/gi, '' );
if ( '?' === cleaned_search ) {
cleaned_search = '';
}
if ( document.location.search !== cleaned_search ) {
history.replaceState( {}, document.title, document.location.pathname + cleaned_search );
}
}
};
$( function() {
jprp.cleanupTrackedUrl();
$.getJSON( jprp.getEndpointURL(), function( response ) {
if ( 0 === response.items.length || 0 === $( '#jp-relatedposts' ).length ) {
return;
}
jprp.response = response;
var html = '';
if ( !response.show_thumbnails ) {
html = jprp.generateMinimalHtml( response.items );
} else {
html = jprp.generateVisualHtml( response.items );
}
$( '#jp-relatedposts' ).append( html );
jprp.setVisualExcerptHeights();
$( '#jp-relatedposts' ).show();
$( '#jp-relatedposts a.jp-relatedposts-post-a' ).click(function() {
this.href = jprp.getTrackedUrl( this );
});
} );
} );
})(jQuery);