1/* global wpcom_reblog */ 2 3var jetpackLikesWidgetBatch = []; 4var jetpackLikesMasterReady = false; 5 6// Due to performance problems on pages with a large number of widget iframes that need to be loaded, 7// we are limiting the processing at any instant to unloaded widgets that are currently in viewport, 8// plus this constant that will allow processing of widgets above and bellow the current fold. 9// This aim of it is to improve the UX and hide the transition from unloaded to loaded state from users. 10var jetpackLikesLookAhead = 2000; // pixels 11 12// Keeps track of loaded comment likes widget so we can unload them when they are scrolled out of view. 13var jetpackCommentLikesLoadedWidgets = []; 14 15var jetpackLikesDocReadyPromise = new Promise( resolve => { 16 if ( document.readyState !== 'loading' ) { 17 resolve(); 18 } else { 19 window.addEventListener( 'DOMContentLoaded', () => resolve() ); 20 } 21} ); 22 23function JetpackLikesPostMessage( message, target ) { 24 if ( typeof message === 'string' ) { 25 try { 26 message = JSON.parse( message ); 27 } catch ( e ) { 28 return; 29 } 30 } 31 32 if ( target && typeof target.postMessage === 'function' ) { 33 try { 34 target.postMessage( 35 JSON.stringify( { 36 type: 'likesMessage', 37 data: message, 38 } ), 39 '*' 40 ); 41 } catch ( e ) { 42 return; 43 } 44 } 45} 46 47function JetpackLikesBatchHandler() { 48 const requests = []; 49 document.querySelectorAll( 'div.jetpack-likes-widget-unloaded' ).forEach( widget => { 50 if ( jetpackLikesWidgetBatch.indexOf( widget.id ) > -1 ) { 51 return; 52 } 53 54 if ( ! jetpackIsScrolledIntoView( widget ) ) { 55 return; 56 } 57 58 jetpackLikesWidgetBatch.push( widget.id ); 59 60 var regex = /like-(post|comment)-wrapper-(\d+)-(\d+)-(\w+)/, 61 match = regex.exec( widget.id ), 62 info; 63 64 if ( ! match || match.length !== 5 ) { 65 return; 66 } 67 68 info = { 69 blog_id: match[ 2 ], 70 width: widget.width, 71 }; 72 73 if ( 'post' === match[ 1 ] ) { 74 info.post_id = match[ 3 ]; 75 } else if ( 'comment' === match[ 1 ] ) { 76 info.comment_id = match[ 3 ]; 77 } 78 79 info.obj_id = match[ 4 ]; 80 81 requests.push( info ); 82 } ); 83 84 if ( requests.length > 0 ) { 85 JetpackLikesPostMessage( 86 { event: 'initialBatch', requests: requests }, 87 window.frames[ 'likes-master' ] 88 ); 89 } 90} 91 92function JetpackLikesMessageListener( event ) { 93 let message = event && event.data; 94 if ( typeof message === 'string' ) { 95 try { 96 message = JSON.parse( message ); 97 } catch ( err ) { 98 return; 99 } 100 } 101 102 const type = message && message.type; 103 const data = message && message.data; 104 105 if ( type !== 'likesMessage' || typeof data.event === 'undefined' ) { 106 return; 107 } 108 109 // We only allow messages from one origin 110 const allowedOrigin = 'https://widgets.wp.com'; 111 if ( allowedOrigin !== event.origin ) { 112 return; 113 } 114 115 switch ( data.event ) { 116 case 'masterReady': 117 jetpackLikesDocReadyPromise.then( () => { 118 jetpackLikesMasterReady = true; 119 120 const stylesData = { 121 event: 'injectStyles', 122 }; 123 const sdTextColor = document.querySelector( '.sd-text-color' ); 124 const sdLinkColor = document.querySelector( '.sd-link-color' ); 125 const sdTextColorStyles = ( sdTextColor && getComputedStyle( sdTextColor ) ) || {}; 126 const sdLinkColorStyles = ( sdLinkColor && getComputedStyle( sdLinkColor ) ) || {}; 127 128 // enable reblogs if they are enabled for the page 129 if ( document.body.classList.contains( 'jetpack-reblog-enabled' ) ) { 130 JetpackLikesPostMessage( { event: 'reblogsEnabled' }, window.frames[ 'likes-master' ] ); 131 } 132 133 stylesData.textStyles = { 134 color: sdTextColorStyles[ 'color' ],
135 fontFamily: sdTextColorStyles[ 'font-family' ], 136 fontSize: sdTextColorStyles[ 'font-size' ], 137 direction: sdTextColorStyles[ 'direction' ], 138 fontWeight: sdTextColorStyles[ 'font-weight' ], 139 fontStyle: sdTextColorStyles[ 'font-style' ], 140 textDecoration: sdTextColorStyles[ 'text-decoration' ], 141 }; 142 143 stylesData.linkStyles = { 144 color: sdLinkColorStyles[ 'color' ], 145 fontFamily: sdLinkColorStyles[ 'font-family' ], 146 fontSize: sdLinkColorStyles[ 'font-size' ], 147 textDecoration: sdLinkColorStyles[ 'text-decoration' ], 148 fontWeight: sdLinkColorStyles[ 'font-weight' ], 149 fontStyle: sdLinkColorStyles[ 'font-style' ], 150 }; 151 152 JetpackLikesPostMessage( stylesData, window.frames[ 'likes-master' ] ); 153 154 JetpackLikesBatchHandler(); 155 } ); 156 157 break; 158 159 // We're keeping this for planned future follow ups. 160 // @see: https://github.com/Automattic/jetpack/pull/42361#discussion_r1995338815 161 case 'showLikeWidget': 162 break; 163 164 // We're keeping this for planned future follow ups. 165 // @see: https://github.com/Automattic/jetpack/pull/42361#discussion_r1995338815 166 case 'showCommentLikeWidget': 167 break; 168 169 case 'killCommentLikes': 170 // If kill switch for comment likes is enabled remove all widgets wrappers and `Loading...` placeholders. 171 document 172 .querySelectorAll( '.jetpack-comment-likes-widget-wrapper' ) 173 .forEach( wrapper => wrapper.remove() ); 174 break; 175 176 case 'clickReblogFlair': 177 if ( wpcom_reblog && typeof wpcom_reblog.toggle_reblog_box_flair === 'function' ) { 178 wpcom_reblog.toggle_reblog_box_flair( data.obj_id, data.post_id ); 179 } 180 break; 181 182 case 'hideOtherGravatars': { 183 hideLikersPopover(); 184 break; 185 } 186 187 case 'showOtherGravatars': { 188 const container = document.querySelector( '#likes-other-gravatars' ); 189 190 if ( ! container ) { 191 break; 192 } 193 194 const list = container.querySelector( 'ul' ); 195 196 container.style.display = 'none'; 197 list.innerHTML = ''; 198 199 container 200 .querySelectorAll( '.likes-text span' ) 201 .forEach( item => ( item.textContent = data.totalLikesLabel ) ); 202 203 ( data.likers || [] ).forEach( async ( liker, index ) => { 204 if ( liker.profile_URL.substr( 0, 4 ) !== 'http' ) { 205 // We only display gravatars with http or https schema 206 return; 207 } 208 209 const element = document.createElement( 'li' ); 210 list.append( element ); 211 212 element.innerHTML = ` 213 <a href="${ encodeURI( liker.profile_URL ) }" rel="nofollow" target="_parent" class="wpl-liker"> 214 <img src="${ encodeURI( liker.avatar_URL ) }" 215 alt="" 216 style="width: 28px; height: 28px;" /> 217 <span></span> 218 </a> 219 `; 220 221 222 // Add some extra attributes through native methods, to ensure strings are sanitized. 223 element.classList.add( liker.css_class ); 224 element.querySelector( 'img' ).alt = data.avatarAltTitle.replace( '%s', liker.name ); 225 element.querySelector( 'span' ).innerText = liker.name; 226 227 if ( index === data.likers.length - 1 ) { 228 element.addEventListener( 'keydown', ( e ) => { 229 if ( e.key === 'Tab' && ! e.shiftKey ) { 230 e.preventDefault(); 231 hideLikersPopover(); 232 233 JetpackLikesPostMessage( 234 { event: 'focusLikesCount', parent: data.parent }, 235 window.frames[ 'likes-master' ] 236 ); 237 } 238 } ); 239 } 240 } ); 241 242 const positionPopup = function() { 243 const containerStyle = getComputedStyle(container); 244 const isRtl = containerStyle.direction === 'rtl'; 245 246 const el = document.querySelector( `*[name='${ data.parent }']` ); 247 const rect = el.getBoundingClientRect(); 248 const win = el.ownerDocument.defaultView; 249 250 const offset = { 251 top: rect.top + win.pageYOffset, 252 left: rect.left + win.pageXOffset, 253 }; 254 255 // don't display yet or we get skewed window.innerWidth later 256 container.style.display = 'none'; 257 258 let containerLeft = 0; 259 container.style.top = offset.top + data.position.top - 1 + 'px'; 260 261 if ( isRtl ) { 262 const visibleAvatarsCount = data && data.likers ? Math.min( data.likers.length, 5 ) : 0; 263 // 24px is the width of the avatar + 4px is the padding between avatars 264 containerLeft = offset.left + data.position.left + 24 * visibleAvatarsCount + 4; 265 container.style.transform = 'translateX(-100%)'; 266 } else { 267 containerLeft = offset.left + data.position.left; 268 } 269 container.style.left = containerLeft + 'px'; 270 271 // Container width - padding
272 const initContainerWidth = data.width - 20; 273 const rowLength = Math.floor( initContainerWidth / 37 ); 274 // # of rows + (avatar + avatar padding) + text above + container padding 275 let height = Math.ceil( data.likers.length / rowLength ) * 37 + 17 + 22; 276 if ( height > 204 ) { 277 height = 204; 278 } 279 280 // If the popup is overflows viewport width, we should show it on the next line 281 // Push it offscreen to calculated rendered width 282 const windowWidth = win.innerWidth; 283 container.style.left = '-9999px'; 284 container.style.display = 'block'; 285 286 // If the popup exceeds the viewport width, 287 // flip the position of the popup. 288 const containerWidth = container.offsetWidth; 289 const containerRight = containerLeft + containerWidth; 290 291 if ( containerRight > windowWidth && ! isRtl) { 292 containerLeft = rect.left + rect.width - containerWidth; 293 } else if ( containerLeft - containerWidth < 0 && isRtl ) { 294 container.style.transform = 'none'; 295 containerLeft = rect.left; 296 } 297 // Set the container left 298 container.style.left = containerLeft + 'px'; 299 300 container.setAttribute( 'aria-hidden', 'false' ); 301 } 302 303 positionPopup(); 304 container.focus(); 305 306 const debounce = function( func, wait ) { 307 var timeout; 308 return function() { 309 var context = this; 310 var args = arguments; 311 clearTimeout( timeout ); 312 timeout = setTimeout( function() { 313 func.apply( context, args ); 314 }, wait ); 315 }; 316 }; 317 318 const debouncedPositionPopup = debounce( positionPopup, 100 ); 319 320 // Keep a reference of this function in the element itself 321 // so that we can destroy it later 322 container.__resizeHandler = debouncedPositionPopup; 323 324 // When window is resized, resize the popup. 325 window.addEventListener( "resize", debouncedPositionPopup ); 326 } 327 } 328} 329 330window.addEventListener( 'message', JetpackLikesMessageListener ); 331 332function hideLikersPopover() { 333 const container = document.querySelector( '#likes-other-gravatars' ); 334 335 if ( container ) { 336 container.style.display = 'none'; 337 container.setAttribute( 'aria-hidden', 'true' ); 338 339 // Remove the resize event listener and cleanup. 340 const resizeHandler = container.__resizeHandler; 341 if ( resizeHandler ) { 342 window.removeEventListener( "resize", resizeHandler ); 343 delete container.__resizeHandler; 344 } 345 } 346} 347 348document.addEventListener( 'click', hideLikersPopover ); 349 350function JetpackLikesWidgetQueueHandler() { 351 var wrapperID; 352 353 if ( ! jetpackLikesMasterReady ) { 354 setTimeout( JetpackLikesWidgetQueueHandler, 500 ); 355 return; 356 } 357 358 // Restore widgets to initial unloaded state when they are scrolled out of view. 359 jetpackUnloadScrolledOutWidgets(); 360 361 var unloadedWidgetsInView = jetpackGetUnloadedWidgetsInView(); 362 363 if ( unloadedWidgetsInView.length > 0 ) { 364 // Grab any unloaded widgets for a batch request 365 JetpackLikesBatchHandler(); 366 } 367 368 for ( var i = 0, length = unloadedWidgetsInView.length; i <= length - 1; i++ ) { 369 wrapperID = unloadedWidgetsInView[ i ].id; 370 371 if ( ! wrapperID ) { 372 continue; 373 } 374 375 jetpackLoadLikeWidgetIframe( wrapperID ); 376 } 377} 378 379function jetpackLoadLikeWidgetIframe( wrapperID ) { 380 if ( typeof wrapperID === 'undefined' ) { 381 return; 382 } 383 384 const wrapper = document.querySelector( '#' + wrapperID ); 385 wrapper.querySelectorAll( 'iframe' ).forEach( iFrame => iFrame.remove() ); 386 387 const placeholder = wrapper.querySelector( '.likes-widget-placeholder' ); 388 389 // Post like iframe 390 if ( placeholder && placeholder.classList.contains( 'post-likes-widget-placeholder' ) ) { 391 const postLikesFrame = document.createElement( 'iframe' ); 392 393 postLikesFrame.classList.add( 'post-likes-widget', 'jetpack-likes-widget' ); 394 postLikesFrame.name = wrapper.dataset.name; 395 postLikesFrame.src = wrapper.dataset.src; 396 postLikesFrame.height = '55px'; 397 postLikesFrame.width = '100%'; 398 postLikesFrame.frameBorder = '0'; 399 postLikesFrame.scrolling = 'no'; 400 postLikesFrame.title = wrapper.dataset.title; 401 402 placeholder.after( postLikesFrame ); 403 } 404 405 // Comment like iframe 406 if ( placeholder.classList.contains( 'comment-likes-widget-placeholder' ) ) { 407 const commentLikesFrame = document.createElement( 'iframe' ); 408 409 commentLikesFrame.class = 'comment-likes-widget-frame jetpack-likes-widget-frame'; 410 commentLikesFrame.name = wrapper.dataset.name; 411 commentLikesFrame.src = wrapper.dataset.src; 412 commentLikesFrame.height = '18px'; 413 commentLikesFrame.width = '100%'; 414 commentLikesFrame.frameBorder = '0'; 415 commentLikesFrame.scrolling = 'no'; 416 417 wrapper.querySelector( '.comment-like-feedback' ).after( commentLikesFrame ); 418 419 jetpackCommentLikesLoadedWidgets.push( commentLikesFrame ); 420 } 421 422 wrapper.classList.remove( 'jetpack-likes-widget-unloaded' ); 423 wrapper.classList.add( 'jetpack-likes-widget-loading' ); 424 425 wrapper.querySelector( 'iframe' ).addEventListener( 'load', e => { 426 JetpackLikesPostMessage( 427 { event: 'loadLikeWidget', name: e.target.name, width: e.target.width }, 428 window.frames[ 'likes-master' ] 429 ); 430 431 wrapper.classList.remove( 'jetpack-likes-widget-loading' ); 432 wrapper.classList.add( 'jetpack-likes-widget-loaded' ); 433 } ); 434} 435 436function jetpackGetUnloadedWidgetsInView() { 437 const unloadedWidgets = document.querySelectorAll( 'div.jetpack-likes-widget-unloaded' ); 438 439 return [ ...unloadedWidgets ].filter( item => jetpackIsScrolledIntoView( item ) ); 440} 441 442function jetpackIsScrolledIntoView( element ) { 443 const top = element.getBoundingClientRect().top; 444 const bottom = element.getBoundingClientRect().bottom; 445
446 // Allow some slack above and bellow the fold with jetpackLikesLookAhead, 447 // with the aim of hiding the transition from unloaded to loaded widget from users. 448 return top + jetpackLikesLookAhead >= 0 && bottom <= window.innerHeight + jetpackLikesLookAhead; 449} 450 451function jetpackUnloadScrolledOutWidgets() { 452 for ( let i = jetpackCommentLikesLoadedWidgets.length - 1; i >= 0; i-- ) { 453 const currentWidgetIframe = jetpackCommentLikesLoadedWidgets[ i ]; 454 455 if ( ! jetpackIsScrolledIntoView( currentWidgetIframe ) ) { 456 const widgetWrapper = 457 currentWidgetIframe && 458 currentWidgetIframe.parentElement && 459 currentWidgetIframe.parentElement.parentElement; 460 461 // Restore parent class to 'unloaded' so this widget can be picked up by queue manager again if needed. 462 widgetWrapper.classList.remove( 'jetpack-likes-widget-loaded' ); 463 widgetWrapper.classList.remove( 'jetpack-likes-widget-loading' ); 464 widgetWrapper.classList.add( 'jetpack-likes-widget-unloaded' ); 465 466 // Bring back the loading placeholder into view. 467 widgetWrapper 468 .querySelectorAll( '.comment-likes-widget-placeholder' ) 469 .forEach( item => ( item.style.display = 'block' ) ); 470 471 // Remove it from the list of loaded widgets. 472 jetpackCommentLikesLoadedWidgets.splice( i, 1 ); 473 474 // Remove comment like widget iFrame. 475 currentWidgetIframe.remove(); 476 } 477 } 478} 479 480var jetpackWidgetsDelayedExec = function ( after, fn ) { 481 var timer; 482 return function () { 483 clearTimeout( timer ); 484 timer = setTimeout( fn, after ); 485 }; 486}; 487 488var jetpackOnScrollStopped = jetpackWidgetsDelayedExec( 250, JetpackLikesWidgetQueueHandler ); 489 490// Load initial batch of widgets, prior to any scrolling events. 491JetpackLikesWidgetQueueHandler(); 492 493// Add event listener to execute queue handler after scroll. 494window.addEventListener( 'scroll', jetpackOnScrollStopped, true ); 495; 496!function(){"use strict";var e,t={noop:function(){},texturize:function(e){return(e=(e=(e=(e+="").replace(/'/g,"’").replace(/'/g,"’")).replace(/"/g,"”").replace(/"/g,"”").replace(/"/g,"”").replace(/[\u201D]/g,"”")).replace(/([\w]+)=&#[\d]+;(.+?)&#[\d]+;/g,'$1="$2"')).trim()},applyReplacements:function(e,t){if(e)return t?e.replace(/{(\d+)}/g,function(e,r){return void 0!==t[r]?t[r]:e}):e},getBackgroundImage:function(e){var t=document.createElement("canvas"),r=t.getContext&&t.getContext("2d");if(e){r.filter="blur(20px) ",r.drawImage(e,0,0);var o=t.toDataURL("image/png");return t=null,o}}},r=function(){function e(e,t){return Element.prototype.matches?e.matches(t):Element.prototype.msMatchesSelector?e.msMatchesSelector(t):void 0}function r(e,t,r,o){if(!e)return o();e.jpCarouselCancelFade&&e.jpCarouselCancelFade(),e.classList.remove("jp-carousel-fade"),e.style.removeProperty("display"),e.style.opacity=t,e.style.pointerEvents="none",e.offsetWidth,e.classList.add("jp-carousel-fade"),e.style.opacity=r;var a=1e3*parseFloat(getComputedStyle(e).transitionDuration)||0,n=setTimeout(function(){e.jpCarouselCancelFade=null,e.style.removeProperty("pointer-events"),o()},a+50);e.jpCarouselCancelFade=function(){clearTimeout(n),e.jpCarouselCancelFade=null}}return{closest:function(t,r){if(t.closest)return t.closest(r);var o=t;do{if(e(o,r))return o;o=o.parentElement||o.parentNode}while(null!==o&&1===o.nodeType);return null},matches:e,hide:function(e){e&&(e.style.display="none")},show:function(e){e&&(e.style.display="block")},fadeIn:function(e,o){r(e,0,1,o=o||t.noop)},fadeOut:function(e,o){o=o||t.noop,r(e,1,0,function(){e&&(e.style.display="none"),o()})},scrollToElement:function(e,t,r){if(!e||!t)return r?r():void 0;var o=t.querySelector(".jp-carousel-info-extra");o&&(o.style.minHeight=window.innerHeight-64+"px");var a=!0,n=Date.now(),i=t.scrollTop,l=Math.max(0,e.offsetTop-Math.max(0,window.innerHeight-function(e){var t=e.querySelector(".jp-carousel-info-footer"),r=e.querySelector(".jp-carousel-info-extra"),o=e.querySelector(".jp-carousel-info-content-wrapper");if(t&&r&&o){var a=window.getComputedStyle(r),n=parseInt(a.paddingTop,10)+parseInt(a.paddingBottom,10);return n=isNaN(n)?0:n,o.offsetHeight+t.offsetHeight+n}return 0}(t)))-t.scrollTop;function s(){a=!1}
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497( function () { 498 'use strict'; 499 500 function forceFileDownloads() { 501 const fileDownloadBlocks = document.querySelectorAll( '.wp-block-file .wp-block-file__button' ); 502 503 fileDownloadBlocks.forEach( function ( fileDownloadButton ) { 504 if ( 505 fileDownloadButton && 506 fileDownloadButton.href && 507 fileDownloadButton.hostname && 508 String( fileDownloadButton.hostname ).endsWith( '.files.wordpress.com' ) 509 ) { 510 const url = new URL( fileDownloadButton.href ); 511 512 if ( 'true' !== url.searchParams.get( 'force_download' ) ) { 513 url.searchParams.append( 'force_download', 'true' ); 514 515 fileDownloadButton.href = url.toString(); 516 } 517 } 518 } ); 519 } 520 521 if ( document.readyState !== 'loading' ) { 522 forceFileDownloads(); 523 } else { 524 document.addEventListener( 'DOMContentLoaded', forceFileDownloads ); 525 } 526} )();; 527/** 528 * Comment Likes - JavaScript 529 * 530 * This handles liking and unliking comments, as well as viewing who has 531 * liked a particular comment. 532 * 533 * @dependency Swipe (dynamically loaded when needed) 534 * 535 * @package Comment_Likes 536 * @subpackage JavaScript 537 */ 538(function () { 539 function init() { 540 let extWin; 541 let extWinCheck; 542 let commentLikeEvent; 543 544 // Only run once. 545 if (window.comment_likes_loaded) { 546 return; 547 } 548 window.comment_likes_loaded = true; 549 550 // Client-side cache of who liked a particular comment to avoid 551 // having to hit the server multiple times for the same data. 552 const commentLikeCache = {}; 553 554 let swipeLibPromise; 555 556 // Load the Swipe library, if it's not already loaded. 557 function swipeLibLoader() { 558 if (!swipeLibPromise) { 559 swipeLibPromise = new Promise((resolve, reject) => { 560 if (window.Swipe) { 561 resolve(window.Swipe); 562 } else { 563 const swipeScript = document.createElement('script'); 564 swipeScript.src = comment_like_text.swipeUrl; 565 swipeScript.async = true; 566 document.body.appendChild(swipeScript); 567 swipeScript.addEventListener('load', () => resolve(window.Swipe)); 568 swipeScript.addEventListener('error', error => reject(error)); 569 } 570 }); 571 } 572 return swipeLibPromise; 573 } 574 575 /** 576 * Parse the comment ID from a comment like link. 577 */ 578 function getCommentId(link) { 579 const commentId = 580 link && link.getAttribute('href') && link.getAttribute('href').split('like_comment='); 581 return commentId[1].split('&_wpnonce=')[0]; 582 } 583 584 /** 585 * Handle an ajax action on the comment like link. 586 */ 587 function handleLinkAction(link, action, commentId, callback) { 588 const nonce = 589 link && link.getAttribute('href') && link.getAttribute('href').split('_wpnonce=')[1]; 590 591 fetch('/wp-admin/admin-ajax.php', { 592 method: 'POST', 593 body: new URLSearchParams({ 594 action: action, 595 _wpnonce: nonce, 596 like_comment: commentId, 597 blog_id: Number(link.dataset.blog), 598 }), 599 headers: { 600 'Content-Type': 'application/x-www-form-urlencoded; charset=UTF-8', 601 'X-Requested-With': 'XMLHttpRequest', 602 Accept: 'application/json', 603 'cache-control': 'no-cache', 604 pragma: 'no-cache', 605 }, 606 }) 607 .then(response => response.json()) 608 .then(callback); 609 } 610 611 function startPolling() { 612 // Append cookie polling login iframe to this window to wait for user to finish logging in (or cancel) 613 const loginIframe = document.createElement('iframe'); 614 loginIframe.id = 'wp-login-polling-iframe'; 615 loginIframe.src = 'https://wordpress.com/public.api/connect/?iframe=true'; 616 document.body.appendChild(loginIframe); 617 loginIframe.style.display = 'none'; 618 } 619 620 function stopPolling() { 621 const iframe = document.querySelector('#wp-login-polling-iframe'); 622 if (iframe) { 623 iframe.remove(); 624 } 625 } 626 627 function hide(el) { 628 if (el && el.style) { 629 el.style.display = 'none'; 630 } 631 } 632 633 function show(el) { 634 if (el && el.style) { 635 el.style.removeProperty('display'); 636 } 637 } 638 639 // Overlay used for displaying comment like info. 640 class Overlay { 641 constructor() { 642 // Overlay element. 643 this.el = document.createElement('div'); 644 this.el.classList.add('comment-likes-overlay'); 645 document.body.appendChild(this.el); 646 hide(this.el); 647 648 this.el.addEventListener('mouseenter', () => { 649 // Don't hide the overlay if the user is mousing over it. 650 overlay.cancelHide(); 651 }); 652 653 this.el.addEventListener('mouseleave', () => overlay.requestHide()); 654 655 // Inner contents of overlay. 656 this.innerEl = null; 657 658 // Instance of the Swipe library. 659 this.swipe = null; 660 661 // Timeout used for hiding the overlay. 662 this.hideTimeout = null; 663 } 664 665 // Initialise the overlay for use, removing any old content. 666 clear() { 667 // Unload any previous instance of Swipe (to avoid leaking a global 668 // event handler). This is done before clearing the contents of the 669 // overlay because Swipe expects the slides to still be present. 670 if (this.swipe) { 671 this.swipe.kill(); 672 this.swipe = null; 673 } 674 this.el.innerHTML = ''; 675 this.innerEl = document.createElement('div'); 676 this.innerEl.classList.add('inner'); 677 this.el.appendChild(this.innerEl); 678 } 679 680 /** 681 * Construct a list (<ul>) of user (gravatar, name) details. 682 * 683 * @param data liker data returned from the server 684 * @param klass CSS class to apply to the <ul> element 685 * @param start index of user to start at 686 * @param length number of users to include in the list 687 * 688 * @return A container element with the list 689 */ 690 getUserBits(data, klass, start, length) { 691 start = start || 0; 692 let last = start + (length || data.length); 693 last = last > data.length ? data.length : last; 694 const container = document.createElement('div'); 695 container.classList.add('liker-list'); 696 let html = `<ul class="${klass || ''}">`; 697 for (let i = start; i < last; ++i) { 698 const user = data[i]; 699 html += ` 700 <li> 701 <a rel="nofollow" title="${user.display_name_esc}" href="${user.profile_url_esc}"> 702 <img src="${user.avatar_url_esc}" alt="${user.display_name_esc}" /> 703 <span class="user-name">${user.display_name_esc}</span> 704 </a> 705 </li> 706 `; 707 } 708 html += '</ul>'; 709 container.innerHTML = html; 710 return container; 711 } 712 713 /** 714 * Render the display of who has liked this comment. The type of 715 * display depends on how many people have liked the comment. 716 * If more than 10 people have liked the comment, this function 717 * renders navigation controls and sets up the Swipe library for 718 * changing between pages. 719 * 720 * @param link the element over which the user is hovering 721 * @param data the results retrieved from the server 722 */ 723 showLikes(link, data) { 724 this.clear(); 725 726 link.dataset.likeCount = data.length; 727 if (data.length === 0) { 728 // No likers after all. 729 hide(this.el); 730 return; 731 } 732 733 this.innerEl.style.padding = '12px'; 734 735 if (data.length < 6) { 736 // Only one column needed. 737 this.innerEl.style.maxWidth = '200px'; 738 this.innerEl.innerHTML = ''; 739 this.innerEl.appendChild(this.getUserBits(data, 'single')); 740 this.setPosition(link); 741 } else if (data.length < 11) { 742 // Two columns, but only one page. 743 this.innerEl.innerHTML = ''; 744 this.innerEl.appendChild(this.getUserBits(data, 'double')); 745 this.setPosition(link); 746 } else { 747 // Multiple pages. 748 this.renderLikesWithPagination(data, link); 749 } 750 } 751 752 /**
753 * Render multiple pages of likes with pagination controls. 754 * This function is intended to be called by `showLikes` above. 755 * 756 * @param data the results retrieved from the server 757 */ 758 renderLikesWithPagination(data, link) { 759 swipeLibLoader().then(() => { 760 const page_count = Math.ceil(data.length / 10); 761 // Swipe requires two nested containers. 762 const swipe = document.createElement('div'); 763 swipe.classList.add('swipe'); 764 this.innerEl.appendChild(swipe); 765 766 const wrap = document.createElement('div'); 767 wrap.classList.add('swipe-wrap'); 768 swipe.appendChild(wrap); 769 770 for (let i = 0; i < page_count; ++i) { 771 wrap.appendChild(this.getUserBits(data, 'double', i * 10, 10)); 772 } 773 774 /** 775 * Navigation controls. 776 * This is based on the Newdash controls found in 777 * reader/recommendations-templates.php 778 */ 779 const nav = document.createElement('nav'); 780 nav.classList.add('slider-nav'); 781 782 let navContents = ` 783 <a href="#" class="prev"> 784 <span class="noticon noticon-previous" title="Previous" alt="<"></span> 785 </a> 786 <span class="position"> 787 `; 788 for (let i = 0; i < page_count; ++i) { 789 navContents += `<em data-page="${i}" class="${i === 0 ? 'on' : ''}">•</em>`; 790 } 791 navContents += ` 792 </span> 793 <a href="#" class="next"> 794 <span class="noticon noticon-next" title="Next" alt=">"></span> 795 </a> 796 `; 797 this.innerEl.appendChild(nav); 798 nav.innerHTML = navContents; 799 800 /** Set up Swipe. **/ 801 // Swipe cannot be set up successfully unless its container 802 // is visible, so we show it now. 803 show(this.el); 804 this.setPosition(link); 805 806 this.swipe = new Swipe(swipe, { 807 callback: function (pos) { 808 // Update the pagination indicators. 809 // 810 // If there are exactly two pages, Swipe has a weird 811 // special case where it duplicates both pages and 812 // can return index 2 and 3 even though those aren't 813 // real pages (see swipe.js, line 47). To deal with 814 // this, we use the expression `pos % page_count`. 815 pos = pos % page_count; 816 nav.querySelectorAll('em').forEach(em => { 817 const page = Number(em.dataset.page); 818 em.setAttribute('class', pos === page ? 'on' : ''); 819 }); 820 }, 821 }); 822 823 nav.querySelectorAll('em').forEach(em => { 824 em.addEventListener('click', e => { 825 // Go to the page corresponding to the indicator clicked. 826 this.swipe.slide(Number(em.dataset.page)); 827 e.preventDefault(); 828 }); 829 }); 830 // Previous and next buttons. 831 nav.querySelector('.prev').addEventListener('click', e => { 832 this.swipe.prev(); 833 e.preventDefault(); 834 }); 835 nav.querySelector('.next').addEventListener('click', e => { 836 this.swipe.next(); 837 e.preventDefault(); 838 }); 839 }); 840 } 841 842 /** 843 * Open the overlay and show a loading message. 844 */ 845 showLoadingMessage(link) { 846 this.clear(); 847 this.innerEl.textContent = comment_like_text.loading; 848 this.setPosition(link); 849 } 850 851 /** 852 * Position the overlay near the current comment. 853 * 854 * @param link element near which to position the overlay 855 */ 856 setPosition(link) { 857 // Prepare a down arrow icon for the bottom of the overlay. 858 const icon = document.createElement('span'); 859 this.el.appendChild(icon); 860 icon.classList.add('icon', 'noticon', 'noticon-downarrow'); 861 icon.style.textShadow = '0px 1px 1px rgb(223, 223, 223)'; 862 863 const rect = link.getBoundingClientRect(); 864 const win = document.defaultView; 865 const offset = { 866 top: rect.top + win.scrollY, 867 left: rect.left + win.scrollX, 868 }; 869 870 // Take measurements with the element fully visible. 871 show(this.el); 872 let left = offset.left - (this.el.offsetWidth - link.offsetWidth) / 2; 873 left = left < 5 ? 5 : left; 874 let top = offset.top - this.el.offsetHeight + 5; 875 hide(this.el); 876 877 const adminBar = document.querySelector('#wpadminbar'); 878 879 // Check if the overlay would appear off the screen. 880 if (top < win.scrollY + ((adminBar && adminBar.offsetHeight) || 0)) { 881 // We'll display the overlay beneath the link instead. 882 top = offset.top + link.offsetHeight; 883 // Instead of using the down arrow icon, use an up arrow. 884 icon.remove(); 885 this.el.prepend(icon); 886 icon.classList.remove('noticon-downarrow'); 887 icon.classList.add('noticon-uparrow'); 888 icon.style.textShadow = '0px -1px 1px rgb(223, 223, 223)'; 889 icon.style.verticalAlign = 'bottom'; 890 } 891 892 this.el.style.left = `${left}px`; 893 this.el.style.top = `${top}px`; 894 show(this.el); 895 896 // The height of the arrow icon differs slightly between browsers, 897 // so we compute the margin here to make sure it isn't disjointed 898 // from the overlay. 899 icon.style.marginTop = `${icon.scrollHeight - 26}px`; 900 icon.style.marginBottom = `${20 - icon.scrollHeight}px`; 901 902 // Position the arrow to be horizontally centred on the link. 903 icon.style.paddingLeft = `${ 904 offset.left - left + (link.offsetWidth - icon.scrollWidth) / 2 905 }px`; 906 } 907 908 /** 909 * Return whether the overlay is visible. 910 */ 911 isVisible() { 912 return this.el.style.getPropertyValue('display') !== 'none'; 913 } 914 915 /** 916 * Request that the overlay be hidden after a short delay. 917 */ 918 requestHide() { 919 if (this.hideTimeout !== null) { 920 return; 921 } 922 this.hideTimeout = setTimeout(() => { 923 hide(this.el); 924 this.clear(); 925 }, 300); 926 } 927 928 /** 929 * Cancel a request to hide the overlay. 930 */ 931 cancelHide() { 932 if (this.hideTimeout !== null) { 933 clearTimeout(this.hideTimeout); 934 this.hideTimeout = null; 935 } 936 } 937 } 938 939 // Overlay used for displaying comment like info.
940 const overlay = new Overlay(); 941 942 // The most recent comment for which the user has requested to see 943 // who liked it. 944 var relevantComment; 945 946 // Precache after this timeout. 947 var precacheTimeout = null; 948 949 /** 950 * Fetch the like data for a particular comment. 951 */ 952 function fetchLikeData(link, commentId) { 953 commentLikeCache[commentId] = null; 954 955 const container = link && link.parentElement && link.parentElement.parentElement; 956 const star = container.querySelector('a.comment-like-link'); 957 star && 958 handleLinkAction(star, 'view_comment_likes', commentId, data => { 959 // Populate the cache. 960 commentLikeCache[commentId] = data; 961 962 // Only show the overlay if the user is interested. 963 if (overlay.isVisible() && relevantComment === commentId) { 964 overlay.showLikes(link, data); 965 } 966 }); 967 } 968 969 function readCookie(c) { 970 const nameEQ = c + '='; 971 const cookieStrings = document.cookie.split(';'); 972 973 for (let i = 0; i < cookieStrings.length; i++) { 974 let cookieString = cookieStrings[i]; 975 while (cookieString.charAt(0) === ' ') { 976 cookieString = cookieString.substring(1, cookieString.length); 977 } 978 if (cookieString.indexOf(nameEQ) === 0) { 979 const chunk = cookieString.substring(nameEQ.length, cookieString.length); 980 const pairs = chunk.split('&'); 981 const cookieData = {}; 982 for (let num = pairs.length - 1; num >= 0; num--) { 983 const pair = pairs[num].split('='); 984 cookieData[pair[0]] = decodeURIComponent(pair[1]); 985 } 986 return cookieData; 987 } 988 } 989 return null; 990 } 991 992 function getServiceData() { 993 const data = readCookie('wpc_wpc'); 994 if (data === null || typeof data.access_token === 'undefined' || !data.access_token) { 995 return false; 996 } 997 return data; 998 } 999 1000 function readMessage(msg) { 1001 const event = msg.data; 1002 1003 if (typeof event.event === 'undefined') { 1004 return; 1005 } 1006 1007 if (event.event === 'login' && event.success) { 1008 extWinCheck = setInterval(function () { 1009 if (!extWin || extWin.closed) { 1010 clearInterval(extWinCheck); 1011 if (getServiceData()) { 1012 // Load page in an iframe to get the current comment nonce 1013 const nonceIframe = document.createElement('iframe'); 1014 nonceIframe.id = 'wp-login-comment-nonce-iframe'; 1015 nonceIframe.style.display = 'none'; 1016 nonceIframe.src = commentLikeEvent + ''; 1017 document.body.appendChild(nonceIframe); 1018 1019 const commentLikeId = (commentLikeEvent + '') 1020 .split('like_comment=')[1] 1021 .split('&_wpnonce=')[0]; 1022 let c; 1023 1024 // Set a 5 second timeout to redirect to the comment page without doing the Like as a fallback 1025 const commentLikeTimeout = setTimeout(() => { 1026 window.location = commentLikeEvent; 1027 }, 5000); 1028 1029 // Check for a new nonced redirect and use that if available before timing out 1030 const commentLikeCheck = setInterval(() => { 1031 const iframe = document.querySelector('#wp-login-comment-nonce-iframe'); 1032 if (iframe) { 1033 c = iframe.querySelector(`#comment-like-${commentLikeId} .comment-like-link`); 1034 } 1035 if (c && typeof c.href !== 'undefined') { 1036 clearTimeout(commentLikeTimeout); 1037 clearInterval(commentLikeCheck); 1038 window.location = c.href; 1039 } 1040 }, 100); 1041 } 1042 } 1043 }, 100); 1044 1045 if (extWin) { 1046 if (!extWin.closed) { 1047 extWin.close(); 1048 } 1049 extWin = false; 1050 } 1051 1052 stopPolling(); 1053 } 1054 } 1055 1056 if (typeof window.postMessage !== 'undefined') { 1057 window.addEventListener('message', e => { 1058 let message = e && e.data; 1059 if (typeof message === 'string') { 1060 try { 1061 message = JSON.parse(message); 1062 } catch (err) { 1063 return; 1064 } 1065 } 1066 1067 const type = message && message.type; 1068 if (type === 'loginMessage') { 1069 readMessage(message); 1070 } 1071 }); 1072 } 1073 1074 document.body.addEventListener('click', e => { 1075 let target = e.target; 1076 1077 // Don't do anything when clicking on the "X people" link. 1078 if (target.matches('p.comment-likes a.view-likers')) { 1079 e.preventDefault(); 1080 return; 1081 } 1082 1083 // Retrieve the surrounding paragraph to the star, if it hasn't been liked. 1084 const notLikedPar = target.closest('p.comment-not-liked'); 1085 1086 // Return if not clicking on star or surrounding paragraph. 1087 if (!target.matches('a.comment-like-link') && !notLikedPar) { 1088 return; 1089 } 1090 1091 // When a comment hasn't been liked, make the text clickable, too. 1092 if (notLikedPar) { 1093 target = notLikedPar.querySelector('a.comment-like-link'); 1094 if (!target) { 1095 return; 1096 } 1097 } 1098 1099 if (target.classList.contains('needs-login')) { 1100 e.preventDefault(); 1101 commentLikeEvent = target; 1102 if (extWin) { 1103 if (!extWin.closed) { 1104 extWin.close(); 1105 } 1106 extWin = false;
1107 } 1108 1109 stopPolling(); 1110 1111 const url = 'https://wordpress.com/public.api/connect/?action=request&service=wordpress'; 1112 extWin = window.open( 1113 url, 1114 'likeconn', 1115 'status=0,toolbar=0,location=1,menubar=0,directories=0,resizable=1,scrollbars=1,height=560,width=500' 1116 ); 1117 1118 startPolling(); 1119 1120 return false; 1121 } 1122 1123 // Record that the user likes or does not like this comment. 1124 const commentId = getCommentId(target); 1125 target.classList.add('loading'); 1126 1127 let commentEl = document.querySelector(`p#comment-like-${commentId}`); 1128 // Determine whether to like or unlike based on whether the comment is 1129 // currently liked. 1130 const action = 1131 commentEl && commentEl.dataset.liked === 'comment-liked' 1132 ? 'unlike_comment' 1133 : 'like_comment'; 1134 handleLinkAction(target, action, commentId, data => { 1135 // Invalidate the like cache for this comment. 1136 delete commentLikeCache[commentId]; 1137 1138 const countEl = document.querySelector(`#comment-like-count-${data.context}`); 1139 if (countEl) { 1140 countEl.innerHTML = data.display; 1141 } 1142 1143 commentEl = document.querySelector(`p#comment-like-${data.context}`); 1144 if (action === 'like_comment') { 1145 commentEl.classList.remove('comment-not-liked'); 1146 commentEl.classList.add('comment-liked'); 1147 commentEl.dataset.liked = 'comment-liked'; 1148 } else { 1149 commentEl.classList.remove('comment-liked'); 1150 commentEl.classList.add('comment-not-liked'); 1151 commentEl.dataset.liked = 'comment-not-liked'; 1152 } 1153 1154 // Prefetch new data for this comment (if there are likers left). 1155 const parent = target.closest('.comment-likes'); 1156 const link = parent && parent.querySelector('a.view-likers'); 1157 if (link) { 1158 fetchLikeData(link, commentId); 1159 } 1160 1161 target.classList.remove('loading'); 1162 }); 1163 e.preventDefault(); 1164 e.stopPropagation(); 1165 }); 1166 1167 document.body.addEventListener( 1168 'mouseenter', 1169 function (e) { 1170 if (!e.target.matches('p.comment-likes a.view-likers')) { 1171 return; 1172 } 1173 // Show the user a list of who has liked this comment. 1174 1175 const link = e.target; 1176 if (Number(link.dataset.likeCount || 0) === 0) { 1177 // No one has liked this comment. 1178 return; 1179 } 1180 1181 // Don't hide the overlay. 1182 overlay.cancelHide(); 1183 1184 // Get the comment ID. 1185 const container = link.parentElement && link.parentElement.parentElement; 1186 const star = container && container.querySelector('a.comment-like-link'); 1187 const commentId = star && getCommentId(star); 1188 relevantComment = commentId; 1189 1190 // Check if the list of likes for this comment is already in 1191 // the cache. 1192 if (commentId in commentLikeCache) { 1193 const entry = commentLikeCache[commentId];
1194 // Only display the likes if the ajax request is 1195 // actually done. 1196 if (entry !== null) { 1197 overlay.showLikes(link, entry); 1198 } else { 1199 // Make sure the overlay is visible (in case 1200 // the user moved the mouse away while loading 1201 // but then came back before it finished 1202 // loading). 1203 overlay.showLoadingMessage(link); 1204 } 1205 return; 1206 } 1207 1208 // Position the "Loading..." overlay. 1209 overlay.showLoadingMessage(link); 1210 1211 // Fetch the data. 1212 fetchLikeData(link, commentId); 1213 }, 1214 true 1215 ); 1216 1217 document.body.addEventListener( 1218 'mouseleave', 1219 e => { 1220 if (!e.target.matches('p.comment-likes a.view-likers')) { 1221 return; 1222 } 1223 // User has moved cursor away - hide the overlay. 1224 overlay.requestHide(); 1225 }, 1226 true 1227 ); 1228 1229 document.body.addEventListener( 1230 'mouseenter', 1231 e => { 1232 if (!e.target.matches('.comment') || !e.target.querySelector('a.comment-like-link')) { 1233 return; 1234 } 1235 // User is moving over a comment - precache the comment like data.
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