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/** 497 * navigation.js 498 * 499 * Handles toggling the navigation menu for small screens. 500 */ 501( function() { 502 var container = document.getElementById( 'site-navigation' ), 503 button = container.getElementsByTagName( 'h1' )[0], 504 menu = container.getElementsByTagName( 'ul' )[0]; 505 506 if ( undefined == button || undefined == menu ) 507 return false; 508 509 button.onclick = function() { 510 if ( -1 == menu.className.indexOf( 'nav-menu' ) ) 511 menu.className = 'nav-menu'; 512 513 if ( -1 != button.className.indexOf( 'toggled-on' ) ) { 514 button.className = button.className.replace( ' toggled-on', '' ); 515 menu.className = menu.className.replace( ' toggled-on', '' ); 516 container.className = container.className.replace( 'main-small-navigation', 'navigation-main' ); 517 } else { 518 button.className += ' toggled-on'; 519 menu.className += ' toggled-on'; 520 container.className = container.className.replace( 'navigation-main', 'main-small-navigation' ); 521 } 522 }; 523 524 // Hide menu toggle button if menu is empty. 525 if ( ! menu.childNodes.length ) 526 button.style.display = 'none'; 527 528 // Fix child menus for touch devices. 529 function fixMenuTouchTaps( container ) { 530 var touchStartFn, 531 parentLink = container.querySelectorAll( '.menu-item-has-children > a, .page_item_has_children > a' ); 532 533 if ( 'ontouchstart' in window ) { 534 touchStartFn = function( e ) { 535 var menuItem = this.parentNode; 536 537 if ( ! menuItem.classList.contains( 'focus' ) ) { 538 e.preventDefault(); 539 for( var i = 0; i < menuItem.parentNode.children.length; ++i ) { 540 if ( menuItem === menuItem.parentNode.children[i] ) { 541 continue; 542 } 543 menuItem.parentNode.children[i].classList.remove( 'focus' ); 544 } 545 menuItem.classList.add( 'focus' ); 546 } else { 547 menuItem.classList.remove( 'focus' ); 548 } 549 }; 550 551 for ( var i = 0; i < parentLink.length; ++i ) { 552 parentLink[i].addEventListener( 'touchstart', touchStartFn, false ) 553 } 554 } 555 } 556 557 fixMenuTouchTaps( container ); 558} )();; 559( function() { 560 var is_webkit = navigator.userAgent.toLowerCase().indexOf( 'webkit' ) > -1, 561 is_opera = navigator.userAgent.toLowerCase().indexOf( 'opera' ) > -1, 562 is_ie = navigator.userAgent.toLowerCase().indexOf( 'msie' ) > -1; 563 564 if ( ( is_webkit || is_opera || is_ie ) && 'undefined' !== typeof( document.getElementById ) ) { 565 var eventMethod = ( window.addEventListener ) ? 'addEventListener' : 'attachEvent';
566 window[ eventMethod ]( 'hashchange', function() { 567 var element = document.getElementById( location.hash.substring( 1 ) ); 568 569 if ( element ) { 570 if ( ! /^(?:a|select|input|button|textarea)$/i.test( element.tagName ) ) 571 element.tabIndex = -1; 572 573 element.focus(); 574 } 575 }, false ); 576 } 577})(); 578;
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