add-library.js
2 years ago
category-list.js
2 years ago
insert-pattern.js
2 years ago
library-cache.js
2 years ago
library-layout.js
2 years ago
library-provider.js
2 years ago
library-selector.js
2 years ago
manage-libraries.js
2 years ago
pattern-details-header.js
2 years ago
pattern-details.js
2 years ago
pattern-list.js
2 years ago
pattern-search.js
2 years ago
pattern.js
2 years ago
selected-patterns.js
2 years ago
pattern.js
283 lines
| 1 | import { Spinner } from '@wordpress/components'; |
| 2 | import { useEffect, useRef, useState, useLayoutEffect } from '@wordpress/element'; |
| 3 | import imagesLoaded from 'imagesloaded'; |
| 4 | import { useLibrary } from './library-provider'; |
| 5 | |
| 6 | export default function Pattern( { pattern, isLoading, isActive = false, globalStyleCSS } ) { |
| 7 | const { |
| 8 | id, |
| 9 | preview, |
| 10 | label, |
| 11 | scripts = [], |
| 12 | } = pattern; |
| 13 | const iframeRef = useRef(); |
| 14 | const elementRef = useRef(); |
| 15 | const [ height, setHeight ] = useState( 0 ); |
| 16 | const [ injectContent, setInjectContent ] = useState( false ); |
| 17 | const [ editorColors, setEditorColors ] = useState( {} ); |
| 18 | const [ isVisible, setIsVisible ] = useState( !! isActive ); |
| 19 | const [ isLoaded, setIsLoaded ] = useState( false ); |
| 20 | const [ patternWidth, setPatternWidth ] = useState( 0 ); |
| 21 | const [ isResizing, setIsResizing ] = useState( false ); |
| 22 | const { previewIframeWidth } = useLibrary(); |
| 23 | const patternHeight = 350; |
| 24 | const viewport = patternWidth; |
| 25 | const iframe = 1280; |
| 26 | const editorStylesWrapper = document?.querySelector( '.editor-styles-wrapper' ); |
| 27 | |
| 28 | /** |
| 29 | * Debounce our resizing event. |
| 30 | * This is used to re-calculate the pattern width. |
| 31 | */ |
| 32 | useEffect( () => { |
| 33 | let resizeTimer; |
| 34 | |
| 35 | const handleResize = () => { |
| 36 | setIsResizing( true ); |
| 37 | clearTimeout( resizeTimer ); |
| 38 | |
| 39 | resizeTimer = setTimeout( () => { |
| 40 | setIsResizing( false ); |
| 41 | }, 500 ); |
| 42 | }; |
| 43 | |
| 44 | window.addEventListener( 'resize', handleResize ); |
| 45 | |
| 46 | return () => { |
| 47 | window.removeEventListener( 'resize', handleResize ); |
| 48 | }; |
| 49 | }, [] ); |
| 50 | |
| 51 | /** |
| 52 | * Set the width of our patterns. |
| 53 | */ |
| 54 | useEffect( () => { |
| 55 | if ( elementRef.current?.clientWidth && ! isResizing ) { |
| 56 | setPatternWidth( elementRef.current?.clientWidth ); |
| 57 | } |
| 58 | }, [ elementRef.current?.clientWidth, isResizing ] ); |
| 59 | |
| 60 | /** |
| 61 | * Set up lazy loading on the iframes. |
| 62 | */ |
| 63 | useEffect( () => { |
| 64 | const intersectionObserver = new IntersectionObserver( |
| 65 | ( entries ) => { |
| 66 | entries.forEach( ( entry ) => { |
| 67 | if ( entry.isIntersecting ) { |
| 68 | setIsVisible( true ); |
| 69 | intersectionObserver.disconnect(); |
| 70 | } |
| 71 | } ); |
| 72 | }, |
| 73 | { |
| 74 | root: null, |
| 75 | rootMargin: '0px', |
| 76 | threshold: 0.01, |
| 77 | } |
| 78 | ); |
| 79 | |
| 80 | if ( elementRef.current ) { |
| 81 | intersectionObserver.observe( elementRef.current ); |
| 82 | } |
| 83 | |
| 84 | return () => { |
| 85 | if ( intersectionObserver ) { |
| 86 | intersectionObserver.disconnect(); |
| 87 | } |
| 88 | }; |
| 89 | }, [] ); |
| 90 | |
| 91 | /** |
| 92 | * Insert our pattern preview into the empty iframe. |
| 93 | */ |
| 94 | useEffect( () => { |
| 95 | if ( ! isVisible || ! injectContent ) { |
| 96 | return; |
| 97 | } |
| 98 | |
| 99 | const document = iframeRef.current.contentWindow.document; |
| 100 | |
| 101 | scripts.forEach( ( script ) => { |
| 102 | const scriptElement = document.createElement( 'script' ); |
| 103 | scriptElement.defer = true; |
| 104 | scriptElement.src = script; |
| 105 | document.head.appendChild( scriptElement ); |
| 106 | } ); |
| 107 | |
| 108 | document.body.innerHTML = preview; |
| 109 | document.head.innerHTML += '<style id="block-active"></style>'; |
| 110 | document.head.innerHTML += '<style id="pattern-styles"></style>'; |
| 111 | |
| 112 | const globalStyleElement = document.createElement( 'style' ); |
| 113 | globalStyleElement.innerHTML = globalStyleCSS; |
| 114 | |
| 115 | const firstStyleElement = document.querySelector( 'head style' ); |
| 116 | document.head.insertBefore( globalStyleElement, firstStyleElement ); |
| 117 | |
| 118 | imagesLoaded( document.body, () => { |
| 119 | setHeight( document.body.scrollHeight ); |
| 120 | setIsLoaded( true ); |
| 121 | } ); |
| 122 | }, [ injectContent, isVisible ] ); |
| 123 | |
| 124 | /** |
| 125 | * Store our editor background and text color. |
| 126 | */ |
| 127 | useEffect( () => { |
| 128 | if ( ! editorStylesWrapper ) { |
| 129 | return; |
| 130 | } |
| 131 | |
| 132 | const styles = getComputedStyle( editorStylesWrapper ); |
| 133 | |
| 134 | if ( styles ) { |
| 135 | setEditorColors( { background: styles.backgroundColor, text: styles.color } ); |
| 136 | } |
| 137 | }, [ editorStylesWrapper?.style ] ); |
| 138 | |
| 139 | /** |
| 140 | * Mimic our editor styles in the pattern preview. |
| 141 | * This allows our patterns to have the same background/text colors as the editor. |
| 142 | */ |
| 143 | useLayoutEffect( () => { |
| 144 | const document = iframeRef.current?.contentWindow?.document; |
| 145 | |
| 146 | if ( document && document.querySelector && document.querySelector( '#pattern-styles' ) ) { |
| 147 | document.querySelector( '#pattern-styles' ).innerHTML = `body{background-color:${ editorColors?.background };color:${ editorColors?.text };}`; |
| 148 | } |
| 149 | }, [ editorColors, height ] ); |
| 150 | |
| 151 | /** |
| 152 | * Set the height of the preview iframe. |
| 153 | */ |
| 154 | useEffect( () => { |
| 155 | if ( ! isActive ) { |
| 156 | return; |
| 157 | } |
| 158 | |
| 159 | const document = iframeRef?.current?.contentWindow?.document; |
| 160 | |
| 161 | imagesLoaded( document?.body, () => { |
| 162 | setHeight( document?.body?.scrollHeight ); |
| 163 | } ); |
| 164 | }, [ previewIframeWidth ] ); |
| 165 | |
| 166 | /** |
| 167 | * Add padding and center the pattern if it's not full width. |
| 168 | */ |
| 169 | useEffect( () => { |
| 170 | const iframeDocument = iframeRef.current.contentWindow.document; |
| 171 | const iframeBody = iframeDocument.body; |
| 172 | |
| 173 | if ( ! iframeBody ) { |
| 174 | return; |
| 175 | } |
| 176 | |
| 177 | const elements = Array.from( iframeBody.querySelectorAll( '*' ) ); |
| 178 | |
| 179 | const firstVisibleElement = elements?.find( ( element ) => { |
| 180 | const { display } = getComputedStyle( element ); |
| 181 | return display !== 'none'; |
| 182 | } ); |
| 183 | |
| 184 | if ( firstVisibleElement ) { |
| 185 | const parentWidth = firstVisibleElement.parentElement.clientWidth; |
| 186 | const isFullWidth = firstVisibleElement.offsetWidth === parentWidth; |
| 187 | |
| 188 | if ( ! isFullWidth ) { |
| 189 | iframeBody.style.padding = '100px'; |
| 190 | firstVisibleElement.style.marginLeft = 'auto'; |
| 191 | firstVisibleElement.style.marginRight = 'auto'; |
| 192 | } |
| 193 | } |
| 194 | }, [ patternWidth, injectContent, isVisible ] ); |
| 195 | |
| 196 | const viewportHeight = Math.round( height * ( viewport / iframe ) ); |
| 197 | |
| 198 | const wrapperStyle = { |
| 199 | opacity: isLoading ? 0 : 1, |
| 200 | height: patternHeight + 'px', |
| 201 | display: 'flex', |
| 202 | flexDirection: 'column', |
| 203 | justifyContent: ( viewportHeight + 40 ) < patternHeight ? 'center' : '', |
| 204 | }; |
| 205 | |
| 206 | return ( |
| 207 | <div |
| 208 | className="gb-pattern-frame" |
| 209 | style={ isActive ? { |
| 210 | backgroundColor: 'none', |
| 211 | padding: 0, |
| 212 | } : {} } |
| 213 | > |
| 214 | <div |
| 215 | ref={ elementRef } |
| 216 | className="gb-pattern" |
| 217 | style={ ! isActive ? wrapperStyle : { minHeight: '200px' } } |
| 218 | > |
| 219 | { !! isVisible && ! isLoaded && <Spinner /> } |
| 220 | <div |
| 221 | style={ ! isActive ? { |
| 222 | width: `${ viewport }px`, |
| 223 | height: `${ viewportHeight }px`, |
| 224 | } : {} } |
| 225 | > |
| 226 | <div |
| 227 | style={ ! isActive ? { |
| 228 | height: height + 'px', |
| 229 | width: `${ ( ( iframe / viewport ) * 100 ) }%`, |
| 230 | transformOrigin: '0 0', |
| 231 | transform: `scale( ${ viewport / iframe } )`, |
| 232 | } : {} } |
| 233 | > |
| 234 | <iframe |
| 235 | id={ id } |
| 236 | onLoad={ () => { |
| 237 | if ( isVisible ) { |
| 238 | setInjectContent( true ); |
| 239 | } |
| 240 | |
| 241 | const iframeDoc = iframeRef.current.contentDocument || iframeRef.current.contentWindow.document; |
| 242 | |
| 243 | iframeDoc.addEventListener( 'click', ( event ) => { |
| 244 | const clickedElement = event.target; |
| 245 | |
| 246 | if ( 'A' === clickedElement.tagName ) { |
| 247 | const href = clickedElement.getAttribute( 'href' ); |
| 248 | |
| 249 | if ( href && ! href.startsWith( '#' ) ) { |
| 250 | event.preventDefault(); |
| 251 | event.stopPropagation(); |
| 252 | } |
| 253 | } |
| 254 | |
| 255 | // Reset our height when we click anything in our preview. |
| 256 | // This accounts for height changes from accordions etc... |
| 257 | if ( isActive ) { |
| 258 | setHeight( iframeDoc.body.scrollHeight ); |
| 259 | } |
| 260 | } ); |
| 261 | } } |
| 262 | title={ label } |
| 263 | src={ generateBlocksPatternLibrary.patternPreviewUrl } |
| 264 | ref={ iframeRef } |
| 265 | style={ { |
| 266 | height: height + 'px', |
| 267 | border: '0', |
| 268 | pointerEvents: ! isActive ? 'none' : '', |
| 269 | width: isActive ? previewIframeWidth : `${ iframe }px`, |
| 270 | opacity: ! isLoaded ? 0 : 1, |
| 271 | display: ( isActive && '100%' !== previewIframeWidth ) ? 'block' : '', |
| 272 | margin: isActive && '100%' !== previewIframeWidth ? '0 auto' : '', |
| 273 | } } |
| 274 | tabIndex="-1" |
| 275 | loading="lazy" |
| 276 | /> |
| 277 | </div> |
| 278 | </div> |
| 279 | </div> |
| 280 | </div> |
| 281 | ); |
| 282 | } |
| 283 |