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 () { 497 'use strict'; 498 499 var nextFrame; 500 var headerImage; 501 var brandingWrapper; 502 503 // Cool header image scroll 504 function handleScrollFrame() { 505 if ( document.documentElement.clientWidth > 800 ) { 506 var scrollY = window.scrollY || window.pageYOffset || 0; 507 headerImage.style.transform = 'translateY(' + scrollY / 3 + 'px)'; 508 509 var headerHeightPx = getComputedStyle( headerImage ).height || '0'; 510 var headerHeight = parseInt( headerHeightPx.replace( 'px', '' ), 10 ); 511 var opacity = headerHeight ? 1 - scrollY / headerHeight : 1; 512 brandingWrapper.style.opacity = opacity > 0 ? opacity : 0; 513 } else { 514 headerImage.style.transform = 'translateY(0)'; 515 brandingWrapper.style.opacity = 1; 516 } 517 nextFrame = null; 518 } 519 520 function onDocumentReady() { 521 headerImage = document.querySelector( '.site-header-image' ); 522 brandingWrapper = document.querySelector( '.site-branding-wrapper' ); 523 524 if ( headerImage && brandingWrapper ) { 525 window.addEventListener( 'scroll', function () { 526 // Schedule a new frame, if one hasn't been scheduled yet. 527 nextFrame = nextFrame || requestAnimationFrame( handleScrollFrame ); 528 } ); 529 } 530 531 // Smooth scroll to header 532 var toTheTop = document.querySelector( '.tothetop' ); 533 if ( toTheTop ) { 534 toTheTop.addEventListener( 'click', function ( e ) { 535 e.preventDefault(); 536 if ( 537 window.CSS && 538 window.CSS.supports && 539 window.CSS.supports( 'scroll-behavior', 'smooth' ) 540 ) { 541 window.scroll( { top: 0, behavior: 'smooth' } ); 542 } else { 543 window.scroll( 0, 0 ); 544 } 545 } ); 546 } 547 } 548 549 function onPageLoad() { 550 // Trigger resize event to make sure video widgets in the footer maintain the correct aspect ratio 551 setTimeout( function () { 552 if ( typeof Event === 'function' ) { 553 window.dispatchEvent( new Event( 'resize' ) ); 554 } else { 555 var event = window.document.createEvent( 'UIEvents' ); 556 event.initUIEvent( 'resize', true, false, window, 0 ); 557 window.dispatchEvent( event ); 558 } 559 } ); 560 } 561 562 if ( document.readyState !== 'loading' ) { 563 onDocumentReady(); 564 } else { 565 document.addEventListener( 'DOMContentLoaded', onDocumentReady ); 566 } 567 568 if ( document.readyState === 'complete' ) { 569 onPageLoad(); 570 } else { 571 window.addEventListener( 'load', onPageLoad ); 572 } 573} )(); 574; 575/** 576 * navigation.js 577 * 578 * Handles toggling the navigation menu and search menu for small screens. 579 */ 580( function() { 581 var container, button, menu, links, i, len; 582 583 container = document.getElementById( 'site-navigation' ); 584 if ( ! container ) { 585 return; 586 } 587 588 button = container.getElementsByTagName( 'button' )[0]; 589 if ( 'undefined' === typeof button ) { 590 return; 591 } 592 593 menu = container.getElementsByTagName( 'ul' )[0]; 594 595 // Hide menu toggle button if menu is empty and return early. 596 if ( 'undefined' === typeof menu ) { 597 button.style.display = 'none'; 598 return; 599 } 600 601 menu.setAttribute( 'aria-expanded', 'false' ); 602 if ( -1 === menu.className.indexOf( 'nav-menu' ) ) { 603 menu.className += ' nav-menu'; 604 } 605 606 button.onclick = function() { 607 if ( -1 !== container.className.indexOf( 'toggled' ) ) { 608 container.className = container.className.replace( ' toggled', '' ); 609 button.setAttribute( 'aria-expanded', 'false' ); 610 menu.setAttribute( 'aria-expanded', 'false' ); 611 } else {
612 container.className += ' toggled'; 613 button.setAttribute( 'aria-expanded', 'true' ); 614 menu.setAttribute( 'aria-expanded', 'true' ); 615 } 616 }; 617 618 // Get all the link elements within the menu. 619 links = menu.getElementsByTagName( 'a' ); 620 621 // Each time a menu link is focused or blurred, toggle focus. 622 for ( i = 0, len = links.length; i < len; i++ ) { 623 links[i].addEventListener( 'focus', toggleFocus, true ); 624 links[i].addEventListener( 'blur', toggleFocus, true ); 625 } 626 627 /** 628 * Sets or removes .focus class on an element. 629 */ 630 function toggleFocus() { 631 var self = this; 632 633 // Move up through the ancestors of the current link until we hit .nav-menu. 634 while ( -1 === self.className.indexOf( 'nav-menu' ) ) { 635 636 // On li elements toggle the class .focus. 637 if ( 'li' === self.tagName.toLowerCase() ) { 638 if ( -1 !== self.className.indexOf( 'focus' ) ) { 639 self.className = self.className.replace( ' focus', '' ); 640 } else { 641 self.className += ' focus'; 642 } 643 } 644 645 self = self.parentElement; 646 } 647 } 648 649 /** 650 * Toggles `focus` class to allow submenu access on tablets. 651 */ 652 ( function( container ) { 653 var touchStartFn, i, 654 parentLink = container.querySelectorAll( '.menu-item-has-children > a, .page_item_has_children > a' ); 655 656 if ( 'ontouchstart' in window ) { 657 touchStartFn = function( e ) { 658 var menuItem = this.parentNode, i; 659 660 if ( ! menuItem.classList.contains( 'focus' ) ) { 661 e.preventDefault(); 662 for ( i = 0; i < menuItem.parentNode.children.length; ++i ) { 663 if ( menuItem === menuItem.parentNode.children[i] ) { 664 continue; 665 } 666 menuItem.parentNode.children[i].classList.remove( 'focus' ); 667 } 668 menuItem.classList.add( 'focus' ); 669 } else { 670 menuItem.classList.remove( 'focus' ); 671 } 672 }; 673 674 for ( i = 0; i < parentLink.length; ++i ) { 675 parentLink[i].addEventListener( 'touchstart', touchStartFn, false ); 676 } 677 } 678 }( container ) ); 679 680 //Search form 681 var searchcontainer, searchbutton, searchmenu; 682 683 searchcontainer = document.getElementById( 'header-search' ); 684 if ( ! searchcontainer ) 685 return; 686 687 searchbutton = document.getElementById( 'header-search-toggle' ); 688 if ( 'undefined' === typeof searchbutton ) 689 return; 690 691 searchbutton.onclick = function() { 692 if ( -1 !== searchcontainer.className.indexOf( 'toggled' ) ) { 693 searchcontainer.className = searchcontainer.className.replace( 'toggled', '' ); 694 } 695 else { 696 searchcontainer.className += 'toggled'; 697 container.className = container.className.replace( ' toggled', '' ); 698 } 699 }; 700 701} )(); 702; 703( function() { 704 var is_webkit = navigator.userAgent.toLowerCase().indexOf( 'webkit' ) > -1, 705 is_opera = navigator.userAgent.toLowerCase().indexOf( 'opera' ) > -1, 706 is_ie = navigator.userAgent.toLowerCase().indexOf( 'msie' ) > -1; 707 708 if ( ( is_webkit || is_opera || is_ie ) && 'undefined' !== typeof( document.getElementById ) ) { 709 var eventMethod = ( window.addEventListener ) ? 'addEventListener' : 'attachEvent'; 710 window[ eventMethod ]( 'hashchange', function() { 711 var element = document.getElementById( location.hash.substring( 1 ) ); 712 713 if ( element ) { 714 if ( ! /^(?:a|select|input|button|textarea)$/i.test( element.tagName ) ) 715 element.tabIndex = -1; 716 717 element.focus(); 718 } 719 }, false ); 720 } 721})(); 722; 723/** 724 * Observe how the user enters content into the comment form in order to determine whether it's a bot or not. 725 * 726 * Note that no actual input is being saved here, only counts and timings between events. 727 */ 728 729( function() { 730 // Passive event listeners are guaranteed to never call e.preventDefault(), 731 // but they're not supported in all browsers. Use this feature detection 732 // to determine whether they're available for use. 733 var supportsPassive = false; 734 735 try { 736 var opts = Object.defineProperty( {}, 'passive', { 737 get : function() { 738 supportsPassive = true; 739 } 740 } ); 741 742 window.addEventListener( 'testPassive', null, opts ); 743 window.removeEventListener( 'testPassive', null, opts ); 744 } catch ( e ) {} 745 746 function init() { 747 var input_begin = ''; 748 749 var keydowns = {}; 750 var lastKeyup = null; 751 var lastKeydown = null; 752 var keypresses = []; 753 754 var modifierKeys = []; 755 var correctionKeys = []; 756 757 var lastMouseup = null; 758 var lastMousedown = null; 759 var mouseclicks = []; 760 var mouseclickCoordinates = []; 761 762 var mousemoveTimer = null; 763 var lastMousemoveX = null; 764 var lastMousemoveY = null; 765 var lastMousemoveTime = null; 766 var mousemoveStart = null; 767 var mousemoves = []; 768 var intervalsBetweenMousemovesAndClicks = []; 769 770 var touchmoveCountTimer = null; 771 var touchmoveCount = 0; 772 773 var lastTouchEnd = null; 774 var lastTouchStart = null; 775 var touchEvents = []; 776 777 var scrollCountTimer = null; 778 var scrollCount = 0; 779 780 var correctionKeyCodes = [ 'Backspace', 'Delete', 'ArrowUp', 'ArrowDown', 'ArrowLeft', 'ArrowRight', 'Home', 'End', 'PageUp', 'PageDown' ]; 781 var modifierKeyCodes = [ 'Shift', 'CapsLock' ]; 782 783 var forms = document.querySelectorAll( 'form[method=post]' ); 784 785 for ( var i = 0; i < forms.length; i++ ) { 786 var form = forms[i]; 787 788 var formAction = form.getAttribute( 'action' ); 789 790 // Ignore forms that POST directly to other domains; these could be things like payment forms. 791 if ( formAction ) { 792 // Check that the form is posting to an external URL, not a path. 793 if ( formAction.indexOf( 'http://' ) == 0 || formAction.indexOf( 'https://' ) == 0 ) { 794 if ( formAction.indexOf( 'http://' + window.location.hostname + '/' ) != 0 && formAction.indexOf( 'https://' + window.location.hostname + '/' ) != 0 ) { 795 continue; 796 } 797 } 798 } 799 800 form.addEventListener( 'submit', function () { 801 var ak_bkp = prepare_array_for_request( keypresses ); 802 var ak_bmc = prepare_array_for_request( mouseclicks ); 803 var ak_bte = prepare_array_for_request( touchEvents ); 804 var ak_bmm = prepare_array_for_request( mousemoves ); 805 var ak_bcc = prepare_array_for_request( mouseclickCoordinates ); 806 var ak_bibmac = intervalsBetweenMousemovesAndClicks.slice( 0, 100 ).join( ';' ); 807 808 var input_fields = { 809 // When did the user begin entering any input? 810 'bib': input_begin, 811 812 // When was the form submitted? 813 'bfs': Date.now(), 814 815 // How many keypresses did they make? 816 'bkpc': keypresses.length, 817
818 // How quickly did they press a sample of keys, and how long between them? 819 'bkp': ak_bkp, 820 821 // How quickly did they click the mouse, and how long between clicks? 822 'bmc': ak_bmc, 823 824 // How many mouseclicks did they make? 825 'bmcc': mouseclicks.length, 826 827 // When did they press modifier keys (like Shift or Capslock)? 828 'bmk': modifierKeys.join( ';' ), 829 830 // When did they correct themselves? e.g., press Backspace, or use the arrow keys to move the cursor back 831 'bck': correctionKeys.join( ';' ), 832 833 // How many times did they move the mouse? 834 'bmmc': mousemoves.length, 835 836 // How many times did they move around using a touchscreen? 837 'btmc': touchmoveCount, 838 839 // How many times did they scroll? 840 'bsc': scrollCount, 841 842 // How quickly did they perform touch events, and how long between them? 843 'bte': ak_bte, 844 845 // How many touch events were there? 846 'btec' : touchEvents.length, 847 848 // How quickly did they move the mouse, and how long between moves? 849 'bmm' : ak_bmm, 850 851 // Click coordinates 852 'bcc' : ak_bcc, 853 854 // Milliseconds between last mouse movement and each click 855 'bibmac' : ak_bibmac 856 }; 857 858 var akismet_field_prefix = 'ak_'; 859 860 if ( this.getElementsByClassName ) { 861 // Check to see if we've used an alternate field name prefix. We store this as an attribute of the container around some of the Akismet fields. 862 var possible_akismet_containers = this.getElementsByClassName( 'akismet-fields-container' ); 863 864 for ( var containerIndex = 0; containerIndex < possible_akismet_containers.length; containerIndex++ ) { 865 var container = possible_akismet_containers.item( containerIndex ); 866 867 if ( container.getAttribute( 'data-prefix' ) ) { 868 akismet_field_prefix = container.getAttribute( 'data-prefix' ); 869 break; 870 } 871 } 872 } 873 874 for ( var field_name in input_fields ) { 875 var field = document.createElement( 'input' ); 876 field.setAttribute( 'type', 'hidden' ); 877 field.setAttribute( 'name', akismet_field_prefix + field_name ); 878 field.setAttribute( 'value', input_fields[ field_name ] ); 879 this.appendChild( field ); 880 } 881 }, supportsPassive ? { passive: true } : false ); 882 883 form.addEventListener( 'keydown', function ( e ) { 884 // If you hold a key down, some browsers send multiple keydown events in a row. 885 // Ignore any keydown events for a key that hasn't come back up yet. 886 if ( e.key in keydowns ) { 887 return; 888 } 889 890 var keydownTime = ( new Date() ).getTime(); 891 keydowns[ e.key ] = [ keydownTime ]; 892 893 if ( ! input_begin ) { 894 input_begin = keydownTime; 895 } 896 897 // In some situations, we don't want to record an interval since the last keypress -- for example, 898 // on the first keypress, or on a keypress after focus has changed to another element. Normally, 899 // we want to record the time between the last keyup and this keydown. But if they press a 900 // key while already pressing a key, we want to record the time between the two keydowns. 901 902 var lastKeyEvent = Math.max( lastKeydown, lastKeyup ); 903 904 if ( lastKeyEvent ) { 905 keydowns[ e.key ].push( keydownTime - lastKeyEvent ); 906 } 907 908 lastKeydown = keydownTime; 909 }, supportsPassive ? { passive: true } : false ); 910 911 form.addEventListener( 'keyup', function ( e ) { 912 if ( ! ( e.key in keydowns ) ) { 913 // This key was pressed before this script was loaded, or a mouseclick happened during the keypress, or... 914 return; 915 } 916 917 var keyupTime = ( new Date() ).getTime(); 918 919 if ( 'TEXTAREA' === e.target.nodeName || 'INPUT' === e.target.nodeName ) { 920 if ( -1 !== modifierKeyCodes.indexOf( e.key ) ) { 921 modifierKeys.push( keypresses.length - 1 ); 922 } else if ( -1 !== correctionKeyCodes.indexOf( e.key ) ) { 923 correctionKeys.push( keypresses.length - 1 ); 924 } else { 925 // ^ Don't record timings for keys like Shift or backspace, since they 926 // typically get held down for longer than regular typing. 927 928 var keydownTime = keydowns[ e.key ][0]; 929 930 var keypress = []; 931 932 // Keypress duration. 933 keypress.push( keyupTime - keydownTime ); 934 935 // Amount of time between this keypress and the previous keypress. 936 if ( keydowns[ e.key ].length > 1 ) { 937 keypress.push( keydowns[ e.key ][1] ); 938 } 939 940 keypresses.push( keypress ); 941 } 942 } 943
944 delete keydowns[ e.key ]; 945 946 lastKeyup = keyupTime; 947 }, supportsPassive ? { passive: true } : false ); 948 949 form.addEventListener( "focusin", function ( e ) { 950 lastKeydown = null; 951 lastKeyup = null; 952 keydowns = {}; 953 }, supportsPassive ? { passive: true } : false ); 954 955 form.addEventListener( "focusout", function ( e ) { 956 lastKeydown = null; 957 lastKeyup = null; 958 keydowns = {}; 959 }, supportsPassive ? { passive: true } : false ); 960 } 961 962 document.addEventListener( 'mousedown', function ( e ) { 963 lastMousedown = ( new Date() ).getTime(); 964 965 if ( lastMousemoveTime ) { 966 intervalsBetweenMousemovesAndClicks.push( lastMousedown - lastMousemoveTime ); 967 } 968 969 var mouseclickCoordinate = []; 970 971 var rect = e.target.getBoundingClientRect(); 972 var relativeX = e.clientX - rect.left; 973 var relativeY = e.clientY - rect.top; 974 975 // Pixel offset of the click within the target element. 976 mouseclickCoordinate.push( Math.round( relativeX ) ); 977 mouseclickCoordinate.push( Math.round( relativeY ) ); 978 979 // Percentage offset of the click within the target element. 980 mouseclickCoordinate.push( rect.width > 0 ? Math.round( relativeX / rect.width * 100 ) : 0 ); 981 mouseclickCoordinate.push( rect.height > 0 ? Math.round( relativeY / rect.height * 100 ) : 0 ); 982 983 mouseclickCoordinates.push( mouseclickCoordinate ); 984 }, supportsPassive ? { passive: true } : false ); 985 986 document.addEventListener( 'mouseup', function ( e ) { 987 if ( ! lastMousedown ) { 988 // If the mousedown happened before this script was loaded, but the mouseup happened after... 989 return; 990 } 991 992 var now = ( new Date() ).getTime(); 993 994 var mouseclick = []; 995 mouseclick.push( now - lastMousedown ); 996 997 if ( lastMouseup ) { 998 mouseclick.push( lastMousedown - lastMouseup ); 999 } 1000 1001 mouseclicks.push( mouseclick ); 1002 1003 lastMouseup = now; 1004 1005 // If the mouse has been clicked, don't record this time as an interval between keypresses. 1006 lastKeydown = null; 1007 lastKeyup = null; 1008 keydowns = {}; 1009 }, supportsPassive ? { passive: true } : false ); 1010 1011 document.addEventListener( 'mousemove', function ( e ) { 1012 lastMousemoveTime = ( new Date() ).getTime(); 1013 1014 if ( mousemoveTimer ) { 1015 clearTimeout( mousemoveTimer ); 1016 mousemoveTimer = null; 1017 } 1018 else { 1019 mousemoveStart = lastMousemoveTime; 1020 lastMousemoveX = e.offsetX; 1021 lastMousemoveY = e.offsetY; 1022 } 1023 1024 mousemoveTimer = setTimeout( function ( theEvent, originalMousemoveStart ) { 1025 var now = ( new Date() ).getTime() - 500; // To account for the timer delay. 1026 1027 var mousemove = []; 1028 mousemove.push( now - originalMousemoveStart ); 1029 mousemove.push( 1030 Math.round( 1031 Math.sqrt( 1032 Math.pow( theEvent.offsetX - lastMousemoveX, 2 ) + 1033 Math.pow( theEvent.offsetY - lastMousemoveY, 2 ) 1034 ) 1035 ) 1036 ); 1037 1038 if ( mousemove[1] > 0 ) { 1039 // If there was no measurable distance, then it wasn't really a move. 1040 mousemoves.push( mousemove ); 1041 } 1042 1043 mousemoveStart = null; 1044 mousemoveTimer = null; 1045 }, 500, e, mousemoveStart ); 1046 }, supportsPassive ? { passive: true } : false ); 1047 1048 document.addEventListener( 'touchmove', function ( e ) { 1049 if ( touchmoveCountTimer ) { 1050 clearTimeout( touchmoveCountTimer ); 1051 } 1052 1053 touchmoveCountTimer = setTimeout( function () { 1054 touchmoveCount++; 1055 }, 500 ); 1056 }, supportsPassive ? { passive: true } : false ); 1057 1058 document.addEventListener( 'touchstart', function ( e ) { 1059 lastTouchStart = ( new Date() ).getTime(); 1060 }, supportsPassive ? { passive: true } : false ); 1061 1062 document.addEventListener( 'touchend', function ( e ) { 1063 if ( ! lastTouchStart ) { 1064 // If the touchstart happened before this script was loaded, but the touchend happened after... 1065 return; 1066 } 1067 1068 var now = ( new Date() ).getTime(); 1069 1070 var touchEvent = []; 1071 touchEvent.push( now - lastTouchStart ); 1072 1073 if ( lastTouchEnd ) { 1074 touchEvent.push( lastTouchStart - lastTouchEnd ); 1075 } 1076 1077 touchEvents.push( touchEvent ); 1078 1079 lastTouchEnd = now; 1080 1081 // Don't record this time as an interval between keypresses. 1082 lastKeydown = null; 1083 lastKeyup = null; 1084 keydowns = {}; 1085 }, supportsPassive ? { passive: true } : false ); 1086 1087 document.addEventListener( 'scroll', function ( e ) {
1088 if ( scrollCountTimer ) { 1089 clearTimeout( scrollCountTimer ); 1090 } 1091 1092 scrollCountTimer = setTimeout( function () { 1093 scrollCount++; 1094 }, 500 ); 1095 }, supportsPassive ? { passive: true } : false ); 1096 } 1097 1098 /** 1099 * For the timing/coordinate data that is collected, don't send more than `limit` data points in the request. 1100 * Choose a random slice and send those, with each batch separated by semicolons and the items in each batch 1101 * separated by commas. 1102 */ 1103 function prepare_array_for_request( a, limit ) { 1104 if ( ! limit ) { 1105 limit = 100; 1106 } 1107 1108 var rv = ''; 1109 1110 if ( a.length > 0 ) { 1111 var random_starting_point = Math.max( 0, Math.floor( Math.random() * a.length - limit ) ); 1112 1113 for ( var i = 0; i < limit && i < a.length; i++ ) { 1114 var entry = a[ random_starting_point + i ]; 1115 rv += entry.join( ',' ) + ';'; 1116 } 1117 } 1118 1119 return rv; 1120 } 1121 1122 if ( document.readyState !== 'loading' ) { 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Line numbers count LF bytes from the start of the resource, as the search results do. Vendor segments are library code the classifier recognised; they are stored but not indexed. Bytes are shown as Latin1 characters, one per byte.