rtl
11 years ago
class.related-posts-customize.php
2 years ago
jetpack-related-posts.php
2 years ago
readme.md
3 years ago
related-posts-customizer.js
6 years ago
related-posts-rtl.css
2 years ago
related-posts.css
2 years ago
related-posts.js
3 years ago
related-posts.js
391 lines
| 1 | /* globals related_posts_js_options */ |
| 2 | |
| 3 | /** |
| 4 | * Load related posts |
| 5 | */ |
| 6 | ( function () { |
| 7 | 'use strict'; |
| 8 | |
| 9 | var jprp = { |
| 10 | response: null, |
| 11 | |
| 12 | /** |
| 13 | * Utility get related posts JSON endpoint from URLs |
| 14 | * |
| 15 | * @param {string} URL (optional) |
| 16 | * @return {string} Endpoint URL |
| 17 | */ |
| 18 | getEndpointURL: function ( URL ) { |
| 19 | var locationObject, |
| 20 | is_customizer = |
| 21 | 'undefined' !== typeof wp && |
| 22 | wp.customize && |
| 23 | wp.customize.settings && |
| 24 | wp.customize.settings.url && |
| 25 | wp.customize.settings.url.self; |
| 26 | |
| 27 | // If we're in Customizer, write the correct URL. |
| 28 | if ( is_customizer ) { |
| 29 | locationObject = document.createElement( 'a' ); |
| 30 | locationObject.href = wp.customize.settings.url.self; |
| 31 | } else { |
| 32 | locationObject = document.location; |
| 33 | } |
| 34 | |
| 35 | if ( 'string' === typeof URL && URL.match( /^https?:\/\// ) ) { |
| 36 | locationObject = document.createElement( 'a' ); |
| 37 | locationObject.href = URL; |
| 38 | } |
| 39 | |
| 40 | var args = 'relatedposts=1'; |
| 41 | var relatedPosts = document.querySelector( '#jp-relatedposts' ); |
| 42 | |
| 43 | if ( ! relatedPosts ) { |
| 44 | return false; |
| 45 | } |
| 46 | |
| 47 | if ( relatedPosts.hasAttribute( 'data-exclude' ) ) { |
| 48 | args += '&relatedposts_exclude=' + relatedPosts.getAttribute( 'data-exclude' ); |
| 49 | } |
| 50 | |
| 51 | if ( is_customizer ) { |
| 52 | args += '&jetpackrpcustomize=1'; |
| 53 | } |
| 54 | |
| 55 | var pathname = locationObject.pathname; |
| 56 | if ( '/' !== pathname[ 0 ] ) { |
| 57 | pathname = '/' + pathname; |
| 58 | } |
| 59 | |
| 60 | if ( '' === locationObject.search ) { |
| 61 | return pathname + '?' + args; |
| 62 | } else { |
| 63 | return pathname + locationObject.search + '&' + args; |
| 64 | } |
| 65 | }, |
| 66 | |
| 67 | getAnchor: function ( post, classNames ) { |
| 68 | var anchorTitle = post.title; |
| 69 | var anchor = document.createElement( 'a' ); |
| 70 | anchor.setAttribute( 'class', classNames ); |
| 71 | anchor.setAttribute( 'href', post.url ); |
| 72 | anchor.setAttribute( 'title', anchorTitle ); |
| 73 | anchor.setAttribute( 'data-origin', post.url_meta.origin ); |
| 74 | anchor.setAttribute( 'data-position', post.url_meta.position ); |
| 75 | |
| 76 | if ( '' !== post.rel ) { |
| 77 | anchor.setAttribute( 'rel', post.rel ); |
| 78 | } |
| 79 | |
| 80 | var div = document.createElement( 'div' ); |
| 81 | div.appendChild( anchor ); |
| 82 | |
| 83 | var anchorHTML = div.innerHTML; |
| 84 | return [ anchorHTML.substring( 0, anchorHTML.length - 4 ), '</a>' ]; |
| 85 | }, |
| 86 | |
| 87 | generateMinimalHtml: function ( posts, options ) { |
| 88 | var self = this; |
| 89 | var html = ''; |
| 90 | |
| 91 | posts.forEach( function ( post, index ) { |
| 92 | var anchor = self.getAnchor( post, 'jp-relatedposts-post-a' ); |
| 93 | var classes = 'jp-relatedposts-post jp-relatedposts-post' + index; |
| 94 | |
| 95 | if ( post.classes.length > 0 ) { |
| 96 | classes += ' ' + post.classes.join( ' ' ); |
| 97 | } |
| 98 | |
| 99 | html += |
| 100 | '<p class="' + |
| 101 | classes + |
| 102 | '" data-post-id="' + |
| 103 | post.id + |
| 104 | '" data-post-format="' + |
| 105 | post.format + |
| 106 | '">'; |
| 107 | html += |
| 108 | '<span class="jp-relatedposts-post-title">' + |
| 109 | anchor[ 0 ] + |
| 110 | post.title + |
| 111 | anchor[ 1 ] + |
| 112 | '</span>'; |
| 113 | if ( options.showDate ) { |
| 114 | html += |
| 115 | '<time class="jp-relatedposts-post-date" datetime="' + |
| 116 | post.date + |
| 117 | '">' + |
| 118 | post.date + |
| 119 | '</time>'; |
| 120 | } |
| 121 | if ( options.showContext ) { |
| 122 | html += '<span class="jp-relatedposts-post-context">' + post.context + '</span>'; |
| 123 | } |
| 124 | html += '</p>'; |
| 125 | } ); |
| 126 | return ( |
| 127 | '<div class="jp-relatedposts-items jp-relatedposts-items-minimal jp-relatedposts-' + |
| 128 | options.layout + |
| 129 | ' ">' + |
| 130 | html + |
| 131 | '</div>' |
| 132 | ); |
| 133 | }, |
| 134 | |
| 135 | generateVisualHtml: function ( posts, options ) { |
| 136 | var self = this; |
| 137 | var html = ''; |
| 138 | |
| 139 | posts.forEach( function ( post, index ) { |
| 140 | var anchor = self.getAnchor( post, 'jp-relatedposts-post-a' ); |
| 141 | var classes = 'jp-relatedposts-post jp-relatedposts-post' + index; |
| 142 | |
| 143 | if ( post.classes.length > 0 ) { |
| 144 | classes += ' ' + post.classes.join( ' ' ); |
| 145 | } |
| 146 | |
| 147 | if ( ! post.img.src ) { |
| 148 | classes += ' jp-relatedposts-post-nothumbs'; |
| 149 | } else { |
| 150 | classes += ' jp-relatedposts-post-thumbs'; |
| 151 | } |
| 152 | |
| 153 | var dummyContainer = document.createElement( 'p' ); |
| 154 | dummyContainer.innerHTML = post.excerpt; |
| 155 | var excerpt = dummyContainer.textContent; |
| 156 | |
| 157 | html += |
| 158 | '<div class="' + |
| 159 | classes + |
| 160 | '" data-post-id="' + |
| 161 | post.id + |
| 162 | '" data-post-format="' + |
| 163 | post.format + |
| 164 | '">'; |
| 165 | if ( post.img.src ) { |
| 166 | html += |
| 167 | anchor[ 0 ] + |
| 168 | '<img class="jp-relatedposts-post-img" loading="lazy" src="' + |
| 169 | post.img.src + |
| 170 | '" width="' + |
| 171 | post.img.width + |
| 172 | '" height="' + |
| 173 | post.img.height + |
| 174 | ( post.img.srcset ? '" srcset="' + post.img.srcset : '' ) + |
| 175 | ( post.img.sizes ? '" sizes="' + post.img.sizes : '' ) + |
| 176 | '" alt="' + |
| 177 | post.img.alt_text + |
| 178 | '" />' + |
| 179 | anchor[ 1 ]; |
| 180 | } else { |
| 181 | var anchor_overlay = self.getAnchor( |
| 182 | post, |
| 183 | 'jp-relatedposts-post-a jp-relatedposts-post-aoverlay' |
| 184 | ); |
| 185 | html += anchor_overlay[ 0 ] + anchor_overlay[ 1 ]; |
| 186 | } |
| 187 | html += |
| 188 | '<' + |
| 189 | related_posts_js_options.post_heading + |
| 190 | ' class="jp-relatedposts-post-title">' + |
| 191 | anchor[ 0 ] + |
| 192 | post.title + |
| 193 | anchor[ 1 ] + |
| 194 | '</' + |
| 195 | related_posts_js_options.post_heading + |
| 196 | '>'; |
| 197 | html += '<p class="jp-relatedposts-post-excerpt">' + excerpt + '</p>'; |
| 198 | if ( options.showDate ) { |
| 199 | html += |
| 200 | '<time class="jp-relatedposts-post-date" datetime="' + |
| 201 | post.date + |
| 202 | '">' + |
| 203 | post.date + |
| 204 | '</time>'; |
| 205 | } |
| 206 | if ( options.showContext ) { |
| 207 | html += '<p class="jp-relatedposts-post-context">' + post.context + '</p>'; |
| 208 | } |
| 209 | html += '</div>'; |
| 210 | } ); |
| 211 | return ( |
| 212 | '<div class="jp-relatedposts-items jp-relatedposts-items-visual jp-relatedposts-' + |
| 213 | options.layout + |
| 214 | ' ">' + |
| 215 | html + |
| 216 | '</div>' |
| 217 | ); |
| 218 | }, |
| 219 | |
| 220 | /** |
| 221 | * We want to set a max height on the excerpt however we want to set |
| 222 | * this according to the natual pacing of the page as we never want to |
| 223 | * cut off a line of text in the middle so we need to do some detective |
| 224 | * work. |
| 225 | */ |
| 226 | setVisualExcerptHeights: function () { |
| 227 | var elements = document.querySelectorAll( |
| 228 | '#jp-relatedposts .jp-relatedposts-post-nothumbs .jp-relatedposts-post-excerpt' |
| 229 | ); |
| 230 | |
| 231 | if ( ! elements.length ) { |
| 232 | return; |
| 233 | } |
| 234 | |
| 235 | var firstElementStyles = getComputedStyle( elements[ 0 ] ); |
| 236 | |
| 237 | var fontSize = parseInt( firstElementStyles.fontSize, 10 ); |
| 238 | var lineHeight = parseInt( firstElementStyles.lineHeight, 10 ); |
| 239 | |
| 240 | // Show 5 lines of text |
| 241 | for ( var i = 0; i < elements.length; i++ ) { |
| 242 | elements[ i ].style.maxHeight = ( 5 * lineHeight ) / fontSize + 'em'; |
| 243 | } |
| 244 | }, |
| 245 | |
| 246 | getTrackedUrl: function ( anchor ) { |
| 247 | var args = 'relatedposts_hit=1'; |
| 248 | args += '&relatedposts_origin=' + anchor.getAttribute( 'data-origin' ); |
| 249 | args += '&relatedposts_position=' + anchor.getAttribute( 'data-position' ); |
| 250 | |
| 251 | var pathname = anchor.pathname; |
| 252 | if ( '/' !== pathname[ 0 ] ) { |
| 253 | pathname = '/' + pathname; |
| 254 | } |
| 255 | |
| 256 | if ( '' === anchor.search ) { |
| 257 | return pathname + '?' + args; |
| 258 | } else { |
| 259 | return pathname + anchor.search + '&' + args; |
| 260 | } |
| 261 | }, |
| 262 | |
| 263 | cleanupTrackedUrl: function () { |
| 264 | if ( 'function' !== typeof history.replaceState ) { |
| 265 | return; |
| 266 | } |
| 267 | |
| 268 | var cleaned_search = document.location.search.replace( |
| 269 | /\brelatedposts_[a-z]+=[0-9]*&?\b/gi, |
| 270 | '' |
| 271 | ); |
| 272 | if ( '?' === cleaned_search ) { |
| 273 | cleaned_search = ''; |
| 274 | } |
| 275 | if ( document.location.search !== cleaned_search ) { |
| 276 | history.replaceState( {}, document.title, document.location.pathname + cleaned_search ); |
| 277 | } |
| 278 | }, |
| 279 | }; |
| 280 | |
| 281 | function afterPostsHaveLoaded() { |
| 282 | jprp.setVisualExcerptHeights(); |
| 283 | var posts = document.querySelectorAll( '#jp-relatedposts a.jp-relatedposts-post-a' ); |
| 284 | |
| 285 | Array.prototype.forEach.call( posts, function ( post ) { |
| 286 | document.addEventListener( 'click', function () { |
| 287 | post.href = jprp.getTrackedUrl( post ); |
| 288 | } ); |
| 289 | } ); |
| 290 | } |
| 291 | |
| 292 | /** |
| 293 | * Initialize Related Posts. |
| 294 | */ |
| 295 | function startRelatedPosts() { |
| 296 | jprp.cleanupTrackedUrl(); |
| 297 | |
| 298 | var endpointURL = jprp.getEndpointURL(); |
| 299 | var relatedPosts = document.querySelector( '#jp-relatedposts' ); |
| 300 | |
| 301 | if ( ! endpointURL ) { |
| 302 | return; |
| 303 | } |
| 304 | |
| 305 | if ( document.querySelectorAll( '#jp-relatedposts .jp-relatedposts-post' ).length ) { |
| 306 | afterPostsHaveLoaded(); |
| 307 | return; |
| 308 | } |
| 309 | |
| 310 | var request = new XMLHttpRequest(); |
| 311 | request.open( 'GET', endpointURL, true ); |
| 312 | request.setRequestHeader( 'x-requested-with', 'XMLHttpRequest' ); |
| 313 | |
| 314 | request.onreadystatechange = function () { |
| 315 | if ( this.readyState === XMLHttpRequest.DONE && this.status === 200 ) { |
| 316 | try { |
| 317 | var response = JSON.parse( request.responseText ); |
| 318 | |
| 319 | if ( 0 === response.items.length || 0 === relatedPosts.length ) { |
| 320 | return; |
| 321 | } |
| 322 | |
| 323 | jprp.response = response; |
| 324 | |
| 325 | var html, |
| 326 | showThumbnails, |
| 327 | options = {}; |
| 328 | |
| 329 | if ( 'undefined' !== typeof wp && wp.customize ) { |
| 330 | showThumbnails = wp.customize.instance( 'jetpack_relatedposts[show_thumbnails]' ).get(); |
| 331 | options.showDate = wp.customize.instance( 'jetpack_relatedposts[show_date]' ).get(); |
| 332 | options.showContext = wp.customize |
| 333 | .instance( 'jetpack_relatedposts[show_context]' ) |
| 334 | .get(); |
| 335 | options.layout = wp.customize.instance( 'jetpack_relatedposts[layout]' ).get(); |
| 336 | } else { |
| 337 | showThumbnails = response.show_thumbnails; |
| 338 | options.showDate = response.show_date; |
| 339 | options.showContext = response.show_context; |
| 340 | options.layout = response.layout; |
| 341 | } |
| 342 | |
| 343 | html = ! showThumbnails |
| 344 | ? jprp.generateMinimalHtml( response.items, options ) |
| 345 | : jprp.generateVisualHtml( response.items, options ); |
| 346 | |
| 347 | var div = document.createElement( 'div' ); |
| 348 | relatedPosts.appendChild( div ); |
| 349 | div.outerHTML = html; |
| 350 | |
| 351 | if ( options.showDate ) { |
| 352 | var dates = relatedPosts.querySelectorAll( '.jp-relatedposts-post-date' ); |
| 353 | |
| 354 | Array.prototype.forEach.call( dates, function ( date ) { |
| 355 | date.style.display = 'block'; |
| 356 | } ); |
| 357 | } |
| 358 | |
| 359 | relatedPosts.style.display = 'block'; |
| 360 | afterPostsHaveLoaded(); |
| 361 | } catch ( error ) { |
| 362 | // Do nothing |
| 363 | } |
| 364 | } |
| 365 | }; |
| 366 | |
| 367 | request.send(); |
| 368 | } |
| 369 | |
| 370 | function init() { |
| 371 | if ( 'undefined' !== typeof wp && wp.customize ) { |
| 372 | if ( wp.customize.selectiveRefresh ) { |
| 373 | wp.customize.selectiveRefresh.bind( 'partial-content-rendered', function ( placement ) { |
| 374 | if ( 'jetpack_relatedposts' === placement.partial.id ) { |
| 375 | startRelatedPosts(); |
| 376 | } |
| 377 | } ); |
| 378 | } |
| 379 | wp.customize.bind( 'preview-ready', startRelatedPosts ); |
| 380 | } else { |
| 381 | startRelatedPosts(); |
| 382 | } |
| 383 | } |
| 384 | |
| 385 | if ( document.readyState !== 'loading' ) { |
| 386 | init(); |
| 387 | } else { |
| 388 | document.addEventListener( 'DOMContentLoaded', init ); |
| 389 | } |
| 390 | } )(); |
| 391 |