| @@ -23,9 +23,9 @@ | ||
| 23 | 23 | function JetpackLikesPostMessage( message, target ) { |
| 24 | 24 | if ( typeof message === 'string' ) { |
| 25 | 25 | try { |
| 26 | 26 | message = JSON.parse( message ); |
| 27 | - } catch ( e ) { | |
| 27 | + } catch { | |
| 28 | 28 | return; |
| 29 | 29 | } |
| 30 | 30 | } |
| 31 | 31 | |
| @@ -37,10 +37,10 @@ | ||
| 37 | 37 | data: message, |
| 38 | 38 | } ), |
| 39 | 39 | '*' |
| 40 | 40 | ); |
| 41 | - } catch ( e ) { | |
| 42 | - return; | |
| 41 | + } catch { | |
| 42 | + // Ignore error | |
| 43 | 43 | } |
| 44 | 44 | } |
| 45 | 45 | } |
| 46 | 46 | |
| @@ -93,9 +93,9 @@ | ||
| 93 | 93 | let message = event && event.data; |
| 94 | 94 | if ( typeof message === 'string' ) { |
| 95 | 95 | try { |
| 96 | 96 | message = JSON.parse( message ); |
| 97 | - } catch ( err ) { | |
| 97 | + } catch { | |
| 98 | 98 | return; |
| 99 | 99 | } |
| 100 | 100 | } |
| 101 | 101 | |
| @@ -124,23 +124,8 @@ | ||
| 124 | 124 | const sdLinkColor = document.querySelector( '.sd-link-color' ); |
| 125 | 125 | const sdTextColorStyles = ( sdTextColor && getComputedStyle( sdTextColor ) ) || {}; |
| 126 | 126 | const sdLinkColorStyles = ( sdLinkColor && getComputedStyle( sdLinkColor ) ) || {}; |
| 127 | 127 | |
| 128 | - if ( document.querySelectorAll( 'iframe.admin-bar-likes-widget' ).length > 0 ) { | |
| 129 | - JetpackLikesPostMessage( { event: 'adminBarEnabled' }, window.frames[ 'likes-master' ] ); | |
| 130 | - | |
| 131 | - const bgSource = document.querySelector( | |
| 132 | - '#wpadminbar .quicklinks li#wp-admin-bar-wpl-like > a' | |
| 133 | - ); | |
| 134 | - | |
| 135 | - const wpAdminBar = document.querySelector( '#wpadminbar' ); | |
| 136 | - | |
| 137 | - stylesData.adminBarStyles = { | |
| 138 | - background: bgSource && getComputedStyle( bgSource ).background, | |
| 139 | - isRtl: wpAdminBar && getComputedStyle( wpAdminBar ).direction === 'rtl', | |
| 140 | - }; | |
| 141 | - } | |
| 142 | - | |
| 143 | 128 | // enable reblogs if we're on a single post page |
| 144 | 129 | if ( document.body.classList.contains( 'single' ) ) { |
| 145 | 130 | JetpackLikesPostMessage( { event: 'reblogsEnabled' }, window.frames[ 'likes-master' ] ); |
| 146 | 131 | } |
| @@ -145,12 +130,12 @@ | ||
| 145 | 130 | JetpackLikesPostMessage( { event: 'reblogsEnabled' }, window.frames[ 'likes-master' ] ); |
| 146 | 131 | } |
| 147 | 132 | |
| 148 | 133 | stylesData.textStyles = { |
| 149 | - color: sdTextColorStyles[ 'color' ], | |
| 134 | + color: sdTextColorStyles.color, | |
| 150 | 135 | fontFamily: sdTextColorStyles[ 'font-family' ], |
| 151 | 136 | fontSize: sdTextColorStyles[ 'font-size' ], |
| 152 | - direction: sdTextColorStyles[ 'direction' ], | |
| 137 | + direction: sdTextColorStyles.direction, | |
| 153 | 138 | fontWeight: sdTextColorStyles[ 'font-weight' ], |
| 154 | 139 | fontStyle: sdTextColorStyles[ 'font-style' ], |
| 155 | 140 | textDecoration: sdTextColorStyles[ 'text-decoration' ], |
| 156 | 141 | }; |
| @@ -155,9 +140,9 @@ | ||
| 155 | 140 | textDecoration: sdTextColorStyles[ 'text-decoration' ], |
| 156 | 141 | }; |
| 157 | 142 | |
| 158 | 143 | stylesData.linkStyles = { |
| 159 | - color: sdLinkColorStyles[ 'color' ], | |
| 144 | + color: sdLinkColorStyles.color, | |
| 160 | 145 | fontFamily: sdLinkColorStyles[ 'font-family' ], |
| 161 | 146 | fontSize: sdLinkColorStyles[ 'font-size' ], |
| 162 | 147 | textDecoration: sdLinkColorStyles[ 'text-decoration' ], |
| 163 | 148 | fontWeight: sdLinkColorStyles[ 'font-weight' ], |
| @@ -170,23 +155,17 @@ | ||
| 170 | 155 | } ); |
| 171 | 156 | |
| 172 | 157 | break; |
| 173 | 158 | |
| 174 | - case 'showLikeWidget': { | |
| 175 | - const placeholder = document.querySelector( `#${ data.id } .likes-widget-placeholder` ); | |
| 176 | - if ( placeholder ) { | |
| 177 | - placeholder.style.display = 'none'; | |
| 178 | - } | |
| 159 | + // We're keeping this for planned future follow ups. | |
| 160 | + // @see: https://github.com/Automattic/jetpack/pull/42361#discussion_r1995338815 | |
| 161 | + case 'showLikeWidget': | |
| 179 | 162 | break; |
| 180 | - } | |
| 181 | 163 | |
| 182 | - case 'showCommentLikeWidget': { | |
| 183 | - const placeholder = document.querySelector( `#${ data.id } .likes-widget-placeholder` ); | |
| 184 | - if ( placeholder ) { | |
| 185 | - placeholder.style.display = 'none'; | |
| 186 | - } | |
| 164 | + // We're keeping this for planned future follow ups. | |
| 165 | + // @see: https://github.com/Automattic/jetpack/pull/42361#discussion_r1995338815 | |
| 166 | + case 'showCommentLikeWidget': | |
| 187 | 167 | break; |
| 188 | - } | |
| 189 | 168 | |
| 190 | 169 | case 'killCommentLikes': |
| 191 | 170 | // If kill switch for comment likes is enabled remove all widgets wrappers and `Loading...` placeholders. |
| 192 | 171 | document |
| @@ -199,10 +178,16 @@ | ||
| 199 | 178 | wpcom_reblog.toggle_reblog_box_flair( data.obj_id ); |
| 200 | 179 | } |
| 201 | 180 | break; |
| 202 | 181 | |
| 182 | + case 'hideOtherGravatars': { | |
| 183 | + hideLikersPopover(); | |
| 184 | + break; | |
| 185 | + } | |
| 186 | + | |
| 203 | 187 | case 'showOtherGravatars': { |
| 204 | 188 | const container = document.querySelector( '#likes-other-gravatars' ); |
| 189 | + | |
| 205 | 190 | if ( ! container ) { |
| 206 | 191 | break; |
| 207 | 192 | } |
| 208 | 193 | |
| @@ -212,11 +197,11 @@ | ||
| 212 | 197 | list.innerHTML = ''; |
| 213 | 198 | |
| 214 | 199 | container |
| 215 | 200 | .querySelectorAll( '.likes-text span' ) |
| 216 | - .forEach( item => ( item.textContent = data.total ) ); | |
| 201 | + .forEach( item => ( item.textContent = data.totalLikesLabel ) ); | |
| 217 | 202 | |
| 218 | - ( data.likers || [] ).forEach( liker => { | |
| 203 | + ( data.likers || [] ).forEach( async ( liker, index ) => { | |
| 219 | 204 | if ( liker.profile_URL.substr( 0, 4 ) !== 'http' ) { |
| 220 | 205 | // We only display gravatars with http or https schema |
| 221 | 206 | return; |
| 222 | 207 | } |
| @@ -221,54 +206,107 @@ | ||
| 221 | 206 | return; |
| 222 | 207 | } |
| 223 | 208 | |
| 224 | 209 | const element = document.createElement( 'li' ); |
| 225 | - element.innerHTML = ` | |
| 226 | - <a href="${ encodeURI( liker.profile_URL ) }" rel="nofollow" target="_parent" class="wpl-liker"> | |
| 227 | - <img src="${ encodeURI( liker.avatar_URL ) }" | |
| 210 | + list.append( element ); | |
| 211 | + | |
| 212 | + const profileLink = encodeURI( liker.profile_URL ); | |
| 213 | + const avatarLink = encodeURI( liker.avatar_URL ); | |
| 214 | + element.innerHTML = `<a href="${ profileLink }" rel="nofollow" target="_parent" class="wpl-liker"> | |
| 215 | + <img src="${ avatarLink }" | |
| 228 | 216 | alt="" |
| 229 | - style="width: 30px; height: 30px; padding-right: 3px;" /> | |
| 230 | - </a> | |
| 231 | - `; | |
| 217 | + style="width: 28px; height: 28px;" /> | |
| 218 | + <span></span> | |
| 219 | + </a>`; | |
| 232 | 220 | |
| 233 | - list.append( element ); | |
| 234 | - | |
| 235 | 221 | // Add some extra attributes through native methods, to ensure strings are sanitized. |
| 236 | 222 | element.classList.add( liker.css_class ); |
| 237 | - element.querySelector( 'img' ).alt = liker.name; | |
| 223 | + element.querySelector( 'img' ).alt = data.avatarAltTitle.replace( '%s', liker.name ); | |
| 224 | + element.querySelector( 'span' ).innerText = liker.name; | |
| 225 | + | |
| 226 | + if ( index === data.likers.length - 1 ) { | |
| 227 | + element.addEventListener( 'keydown', e => { | |
| 228 | + if ( e.key === 'Tab' && ! e.shiftKey ) { | |
| 229 | + e.preventDefault(); | |
| 230 | + hideLikersPopover(); | |
| 231 | + | |
| 232 | + JetpackLikesPostMessage( | |
| 233 | + { event: 'focusLikesCount', parent: data.parent }, | |
| 234 | + window.frames[ 'likes-master' ] | |
| 235 | + ); | |
| 236 | + } | |
| 237 | + } ); | |
| 238 | + } | |
| 238 | 239 | } ); |
| 239 | 240 | |
| 240 | - const el = document.querySelector( `*[name='${ data.parent }']` ); | |
| 241 | - const rect = el.getBoundingClientRect(); | |
| 242 | - const win = el.ownerDocument.defaultView; | |
| 243 | - const offset = { | |
| 244 | - top: rect.top + win.pageYOffset, | |
| 245 | - left: rect.left + win.pageXOffset, | |
| 241 | + const positionPopup = function () { | |
| 242 | + const containerStyle = getComputedStyle( container ); | |
| 243 | + const isRtl = containerStyle.direction === 'rtl'; | |
| 244 | + | |
| 245 | + const el = document.querySelector( `*[name='${ data.parent }']` ); | |
| 246 | + const rect = el.getBoundingClientRect(); | |
| 247 | + const win = el.ownerDocument.defaultView; | |
| 248 | + const offset = { | |
| 249 | + top: rect.top + win.pageYOffset, | |
| 250 | + left: rect.left + win.pageXOffset, | |
| 251 | + }; | |
| 252 | + | |
| 253 | + let containerLeft; | |
| 254 | + container.style.top = offset.top + data.position.top - 1 + 'px'; | |
| 255 | + | |
| 256 | + if ( isRtl ) { | |
| 257 | + const visibleAvatarsCount = data && data.likers ? Math.min( data.likers.length, 5 ) : 0; | |
| 258 | + // 24px is the width of the avatar + 4px is the padding between avatars | |
| 259 | + containerLeft = offset.left + data.position.left + 24 * visibleAvatarsCount + 4; | |
| 260 | + container.style.transform = 'translateX(-100%)'; | |
| 261 | + } else { | |
| 262 | + containerLeft = offset.left + data.position.left; | |
| 263 | + } | |
| 264 | + container.style.left = containerLeft + 'px'; | |
| 265 | + | |
| 266 | + // If the popup overflows viewport width, we should show it on the next line. | |
| 267 | + // Push it offscreen to calculated rendered width. | |
| 268 | + container.style.left = '-9999px'; | |
| 269 | + container.style.display = 'block'; | |
| 270 | + | |
| 271 | + // If the popup exceeds the viewport width, | |
| 272 | + // flip the position of the popup. | |
| 273 | + const containerWidth = container.offsetWidth; | |
| 274 | + const containerRight = containerLeft + containerWidth; | |
| 275 | + if ( containerRight > win.innerWidth ) { | |
| 276 | + containerLeft = rect.right - containerWidth; | |
| 277 | + } | |
| 278 | + | |
| 279 | + // Set the container left | |
| 280 | + container.style.left = containerLeft + 'px'; | |
| 281 | + container.setAttribute( 'aria-hidden', 'false' ); | |
| 246 | 282 | }; |
| 247 | 283 | |
| 248 | - container.style.left = offset.left + data.position.left - 10 + 'px'; | |
| 249 | - container.style.top = offset.top + data.position.top - 33 + 'px'; | |
| 284 | + positionPopup(); | |
| 285 | + container.focus(); | |
| 250 | 286 | |
| 251 | - const rowLength = Math.floor( data.width / 37 ); | |
| 252 | - let height = Math.ceil( data.likers.length / rowLength ) * 37 + 13; | |
| 253 | - if ( height > 204 ) { | |
| 254 | - height = 204; | |
| 255 | - } | |
| 287 | + const debounce = function ( func, wait ) { | |
| 288 | + var timeout; | |
| 289 | + return function () { | |
| 290 | + var context = this; | |
| 291 | + var args = arguments; | |
| 292 | + clearTimeout( timeout ); | |
| 293 | + timeout = setTimeout( function () { | |
| 294 | + func.apply( context, args ); | |
| 295 | + }, wait ); | |
| 296 | + }; | |
| 297 | + }; | |
| 256 | 298 | |
| 257 | - const containerWidth = rowLength * 37 - 7; | |
| 258 | - container.style.height = height + 'px'; | |
| 259 | - container.style.width = containerWidth + 'px'; | |
| 299 | + const debouncedPositionPopup = debounce( positionPopup, 100 ); | |
| 260 | 300 | |
| 261 | - const listWidth = rowLength * 37; | |
| 262 | - list.style.width = listWidth + 'px'; | |
| 301 | + // Keep a reference of this function in the element itself | |
| 302 | + // so that we can destroy it later | |
| 303 | + container.__resizeHandler = debouncedPositionPopup; | |
| 263 | 304 | |
| 264 | - container.style.display = 'block'; | |
| 305 | + // When window is resized, resize the popup. | |
| 306 | + window.addEventListener( 'resize', debouncedPositionPopup ); | |
| 265 | 307 | |
| 266 | - const scrollbarWidth = list.offsetWidth - list.clientWidth; | |
| 267 | - if ( scrollbarWidth > 0 ) { | |
| 268 | - container.style.width = containerWidth + scrollbarWidth + 'px'; | |
| 269 | - list.style.width = listWidth + scrollbarWidth + 'px'; | |
| 270 | - } | |
| 308 | + container.focus(); | |
| 271 | 309 | } |
| 272 | 310 | } |
| 273 | 311 | } |
| 274 | 312 | |
| @@ -273,20 +311,36 @@ | ||
| 273 | 311 | } |
| 274 | 312 | |
| 275 | 313 | window.addEventListener( 'message', JetpackLikesMessageListener ); |
| 276 | 314 | |
| 277 | -document.addEventListener( 'click', e => { | |
| 315 | +function hideLikersPopover() { | |
| 278 | 316 | const container = document.querySelector( '#likes-other-gravatars' ); |
| 279 | 317 | |
| 280 | - if ( container && ! container.contains( e.target ) ) { | |
| 318 | + if ( container ) { | |
| 281 | 319 | container.style.display = 'none'; |
| 320 | + container.setAttribute( 'aria-hidden', 'true' ); | |
| 321 | + | |
| 322 | + // Remove the resize event listener and cleanup. | |
| 323 | + const resizeHandler = container.__resizeHandler; | |
| 324 | + if ( resizeHandler ) { | |
| 325 | + window.removeEventListener( 'resize', resizeHandler ); | |
| 326 | + delete container.__resizeHandler; | |
| 327 | + } | |
| 282 | 328 | } |
| 283 | -} ); | |
| 329 | +} | |
| 284 | 330 | |
| 331 | +document.addEventListener( 'click', hideLikersPopover ); | |
| 332 | + | |
| 285 | 333 | function JetpackLikesWidgetQueueHandler() { |
| 286 | 334 | var wrapperID; |
| 287 | 335 | |
| 288 | 336 | if ( ! jetpackLikesMasterReady ) { |
| 337 | + // The master iframe emits `masterReady` a single time, when it finishes loading. On | |
| 338 | + // script-heavy pages it can finish loading — and emit — before this script attaches its | |
| 339 | + // message listener above, so that one event is missed and the queue never starts. Ping the | |
| 340 | + // master iframe while we wait so it re-emits `masterReady` once both it and our listener | |
| 341 | + // are ready. | |
| 342 | + JetpackLikesPostMessage( { event: 'queryMasterReady' }, window.frames[ 'likes-master' ] ); | |
| 289 | 343 | setTimeout( JetpackLikesWidgetQueueHandler, 500 ); |
| 290 | 344 | return; |
| 291 | 345 | } |
| 292 | 346 | |
| @@ -292,8 +346,10 @@ | ||
| 292 | 346 | |
| 293 | 347 | // Restore widgets to initial unloaded state when they are scrolled out of view. |
| 294 | 348 | jetpackUnloadScrolledOutWidgets(); |
| 295 | 349 | |
| 350 | + jetpackObserveUnloadedWidgets(); | |
| 351 | + | |
| 296 | 352 | var unloadedWidgetsInView = jetpackGetUnloadedWidgetsInView(); |
| 297 | 353 | |
| 298 | 354 | if ( unloadedWidgetsInView.length > 0 ) { |
| 299 | 355 | // Grab any unloaded widgets for a batch request |
| @@ -357,13 +413,26 @@ | ||
| 357 | 413 | wrapper.classList.remove( 'jetpack-likes-widget-unloaded' ); |
| 358 | 414 | wrapper.classList.add( 'jetpack-likes-widget-loading' ); |
| 359 | 415 | |
| 360 | 416 | wrapper.querySelector( 'iframe' ).addEventListener( 'load', e => { |
| 417 | + // A widget scrolled out of view mid-load has its iframe dropped, and a reloaded one | |
| 418 | + // replaces it, either of which leaves this closure holding a detached iframe. Acting on | |
| 419 | + // it would hide a placeholder that is now the only thing the widget has left to show. | |
| 420 | + if ( ! wrapper.contains( e.target ) ) { | |
| 421 | + return; | |
| 422 | + } | |
| 423 | + | |
| 361 | 424 | JetpackLikesPostMessage( |
| 362 | 425 | { event: 'loadLikeWidget', name: e.target.name, width: e.target.width }, |
| 363 | 426 | window.frames[ 'likes-master' ] |
| 364 | 427 | ); |
| 365 | 428 | |
| 429 | + // The stylesheet is otherwise the only thing that hides the placeholder, so one that never | |
| 430 | + // applies leaves "Loading…" sitting over a widget that loaded fine. | |
| 431 | + if ( placeholder ) { | |
| 432 | + placeholder.style.display = 'none'; | |
| 433 | + } | |
| 434 | + | |
| 366 | 435 | wrapper.classList.remove( 'jetpack-likes-widget-loading' ); |
| 367 | 436 | wrapper.classList.add( 'jetpack-likes-widget-loaded' ); |
| 368 | 437 | } ); |
| 369 | 438 | } |
| @@ -397,12 +466,15 @@ | ||
| 397 | 466 | widgetWrapper.classList.remove( 'jetpack-likes-widget-loaded' ); |
| 398 | 467 | widgetWrapper.classList.remove( 'jetpack-likes-widget-loading' ); |
| 399 | 468 | widgetWrapper.classList.add( 'jetpack-likes-widget-unloaded' ); |
| 400 | 469 | |
| 401 | - // Bring back the loading placeholder into view. | |
| 402 | - widgetWrapper | |
| 403 | - .querySelectorAll( '.comment-likes-widget-placeholder' ) | |
| 404 | - .forEach( item => ( item.style.display = 'block' ) ); | |
| 470 | + // An empty string removes the inline declaration rather than setting one, handing the | |
| 471 | + // placeholder back to the stylesheet. The `display: none` set on load would otherwise | |
| 472 | + // outrank it, leaving an unloaded widget with neither an iframe nor a placeholder. | |
| 473 | + const placeholder = widgetWrapper.querySelector( '.likes-widget-placeholder' ); | |
| 474 | + if ( placeholder ) { | |
| 475 | + placeholder.style.display = ''; | |
| 476 | + } | |
| 405 | 477 | |
| 406 | 478 | // Remove it from the list of loaded widgets. |
| 407 | 479 | jetpackCommentLikesLoadedWidgets.splice( i, 1 ); |
| 408 | 480 | |
| @@ -420,8 +492,33 @@ | ||
| 420 | 492 | }; |
| 421 | 493 | }; |
| 422 | 494 | |
| 423 | 495 | var jetpackOnScrollStopped = jetpackWidgetsDelayedExec( 250, JetpackLikesWidgetQueueHandler ); |
| 496 | + | |
| 497 | +// Scrolling is not the only thing that brings a widget into range. A stylesheet that lands late | |
| 498 | +// reflows the page without firing a scroll event, and the queue would never look at that widget | |
| 499 | +// again, leaving it on "Loading…" until the reader happens to scroll. | |
| 500 | +var jetpackLikesWidgetObserver = | |
| 501 | + typeof IntersectionObserver === 'function' | |
| 502 | + ? new IntersectionObserver( jetpackOnScrollStopped, { | |
| 503 | + rootMargin: `${ jetpackLikesLookAhead }px`, | |
| 504 | + // jetpackIsScrolledIntoView() wants the widget fully inside the band, so ask to be | |
| 505 | + // told when it gets there - crossing into partial overlap alone would not load it. | |
| 506 | + threshold: [ 0, 1 ], | |
| 507 | + } ) | |
| 508 | + : null; | |
| 509 | + | |
| 510 | +// Observing an element twice is a no-op, so every queue pass can call this to pick up widgets | |
| 511 | +// added after load. | |
| 512 | +function jetpackObserveUnloadedWidgets() { | |
| 513 | + if ( ! jetpackLikesWidgetObserver ) { | |
| 514 | + return; | |
| 515 | + } | |
| 516 | + | |
| 517 | + document | |
| 518 | + .querySelectorAll( 'div.jetpack-likes-widget-unloaded' ) | |
| 519 | + .forEach( widget => jetpackLikesWidgetObserver.observe( widget ) ); | |
| 520 | +} | |
| 424 | 521 | |
| 425 | 522 | // Load initial batch of widgets, prior to any scrolling events. |
| 426 | 523 | JetpackLikesWidgetQueueHandler(); |
| 427 | 524 | |
