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import { BlockPreview, transformStyles } from '@wordpress/block-editor' |
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import { rawHandler } from '@wordpress/blocks' |
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import { |
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useState, |
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useRef, |
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useEffect, |
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useMemo, |
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useLayoutEffect, |
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} from '@wordpress/element' |
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import { __ } from '@wordpress/i18n' |
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import classNames from 'classnames' |
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import { getThemeVariations, parseThemeJson } from '@onboarding/api/WPApi' |
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import { useFetch } from '@onboarding/hooks/useFetch' |
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import { useIsMounted } from '@onboarding/hooks/useIsMounted' |
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import { capitalize, lowerImageQuality } from '@onboarding/lib/util' |
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import { useUserSelectionStore } from '@onboarding/state/UserSelections' |
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import { SpinnerIcon } from '@onboarding/svg' |
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|
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const fetcher = async (themeJson) => { |
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if (!themeJson) return '{}' |
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const res = await parseThemeJson(JSON.stringify(themeJson)) |
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return res?.styles ?? '{}' |
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} |
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export const StylePreview = ({ |
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style, |
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onSelect, |
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blockHeight, |
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context, |
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active = false, |
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onHover = null, |
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}) => { |
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const siteType = useUserSelectionStore((state) => state.siteType) |
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const isMounted = useIsMounted() |
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const [code, setCode] = useState('') |
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const [loaded, setLoaded] = useState(false) |
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const [inView, setInView] = useState(false) |
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const [hoverCleanup, setHoverCleanup] = useState(null) |
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const [variation, setVariation] = useState() |
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const previewContainer = useRef(null) |
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const content = useRef(null) |
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const blockRef = useRef(null) |
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const observer = useRef(null) |
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const loadTime = useRef(false) |
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const { data: themeJson } = useFetch( |
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inView && variation ? variation : null, |
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fetcher, |
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) |
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const { data: variations } = useFetch('variations', getThemeVariations) |
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|
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const blocks = useMemo( |
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() => rawHandler({ HTML: lowerImageQuality(code) }), |
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[code], |
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) |
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const transformedStyles = useMemo( |
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() => |
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themeJson |
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? transformStyles( |
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[{ css: themeJson }], |
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'.editor-styles-wrapper', |
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) |
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: null, |
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[themeJson], |
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) |
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|
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useLayoutEffect(() => { |
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if (!inView || !context.measure) return |
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const key = `${context.type}-${context.detail}` |
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// If the componeent is in view, start the timer |
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if (!loaded && !loadTime.current) { |
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performance.mark(key) |
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return |
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} |
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const time = performance.measure(key, { |
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start: key, |
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// The extendify key is used to filter only our measurements |
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detail: { context, extendify: true }, |
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}) |
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|
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loadTime.current = time.duration |
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const q = new URLSearchParams(window.location.search) |
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if (q?.has('performance')) { |
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console.info( |
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`🚀 ${capitalize(context.type)} (${ |
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context.detail |
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}) in ${time.duration.toFixed()}ms`, |
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) |
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} |
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}, [loaded, context, inView]) |
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|
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useEffect(() => { |
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if (!variations?.length) return |
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|
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// Grab the styles from the theme.json variation |
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const variation = variations.find( |
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(theme) => theme.title === style.label, |
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) |
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setVariation(variation) |
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}, [style, variations]) |
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|
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useEffect(() => { |
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if (!themeJson || !style?.code) return |
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const code = [style?.headerCode, style?.code, style?.footerCode] |
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.filter(Boolean) |
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.join('') |
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.replace( |
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// <!-- wp:navigation --> <!-- /wp:navigation --> |
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/<!-- wp:navigation[.\S\s]*?\/wp:navigation -->/g, |
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'<!-- wp:paragraph {"className":"tmp-nav"} --><p class="tmp-nav">Home | About | Contact</p ><!-- /wp:paragraph -->', |
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) |
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.replace( |
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// <!-- wp:navigation /--> |
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/<!-- wp:navigation.*\/-->/g, |
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'<!-- wp:paragraph {"className":"tmp-nav"} --><p class="tmp-nav">Home | About | Contact</p ><!-- /wp:paragraph -->', |
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) |
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setCode(code) |
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}, [siteType?.slug, themeJson, style]) |
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|
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useEffect(() => { |
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let raf1, raf2 |
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if (!content.current || !loaded) return |
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const p = previewContainer.current |
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const scale = p.offsetWidth / 1400 |
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const iframe = content.current |
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const body = iframe.contentDocument.body |
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if (body?.style) { |
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body.style.transitionProperty = 'all' |
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body.style.top = 0 |
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} |
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|
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const handleIn = () => { |
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if (!body.offsetHeight) return |
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const dynBlockHeight = |
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(blockRef?.current?.offsetHeight ?? blockHeight) - 32 |
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const bodyHeight = |
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body.getBoundingClientRect().height - dynBlockHeight / scale |
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body.style.transitionDuration = |
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Math.max(bodyHeight * 2, 3000) + 'ms' |
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raf1 = window.requestAnimationFrame(() => { |
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body.style.top = Math.max(0, bodyHeight) * -1 + 'px' |
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}) |
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} |
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const handleOut = () => { |
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if (!body.offsetHeight) return |
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const dynBlockHeight = |
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(blockRef?.current?.offsetHeight ?? blockHeight) - 32 |
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const bodyHeight = body.offsetHeight - dynBlockHeight / scale |
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body.style.transitionDuration = bodyHeight + 'ms' |
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raf2 = window.requestAnimationFrame(() => { |
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body.style.top = 0 |
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}) |
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} |
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|
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p.addEventListener('focus', handleIn) |
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p.addEventListener('mouseenter', handleIn) |
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p.addEventListener('blur', handleOut) |
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p.addEventListener('mouseleave', handleOut) |
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return () => { |
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window.cancelAnimationFrame(raf1) |
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window.cancelAnimationFrame(raf2) |
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p.removeEventListener('focus', handleIn) |
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p.removeEventListener('mouseenter', handleIn) |
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p.removeEventListener('blur', handleOut) |
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p.removeEventListener('mouseleave', handleOut) |
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} |
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}, [blockHeight, loaded]) |
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|
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useEffect(() => { |
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if (!blocks?.length || !inView) return |
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let iframe |
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|
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// Inserts theme styles after iframe is loaded |
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const handle = () => { |
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if (!iframe.contentDocument?.getElementById('ext-tj')) { |
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iframe.contentDocument?.head?.insertAdjacentHTML( |
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'beforeend', |
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`<style id="ext-tj">${transformedStyles}</style>`, |
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) |
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} |
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content.current = iframe |
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setTimeout(() => { |
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if (isMounted.current) setLoaded(true) |
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}, 100) |
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} |
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// The callback will attach a load event to the iframe |
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const observer = new MutationObserver(() => { |
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iframe = previewContainer.current.querySelector('iframe[title]') |
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iframe.addEventListener('load', handle) |
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setTimeout(() => { |
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// In some cases, the load event doesn't fire. |
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handle() |
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}, 2000) |
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observer.disconnect() |
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}) |
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// observe the ref for when the iframe is injected by wp |
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observer.observe(previewContainer.current, { |
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attributes: false, |
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childList: true, |
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subtree: false, |
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}) |
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return () => { |
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observer.disconnect() |
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iframe?.removeEventListener('load', handle) |
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} |
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}, [blocks, transformedStyles, isMounted, inView]) |
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|
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useEffect(() => { |
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// Only trigger the mutation observer if we are in view |
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if (!observer.current) { |
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observer.current = new IntersectionObserver((entries) => { |
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if (entries[0].isIntersecting) { |
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setInView(true) |
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} |
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}) |
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} |
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observer.current.observe(blockRef.current) |
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return () => { |
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observer.current.disconnect() |
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} |
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}, []) |
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|
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return ( |
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<> |
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{loaded && code ? null : ( |
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<div className="absolute inset-0 z-20 bg-gray-50 flex items-center justify-center"> |
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<SpinnerIcon className="spin w-8" /> |
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</div> |
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)} |
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<div |
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ref={blockRef} |
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role={onSelect ? 'button' : undefined} |
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tabIndex={onSelect ? 0 : undefined} |
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aria-label={ |
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onSelect ? __('Press to select', 'extendify') : undefined |
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} |
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className={classNames( |
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'group w-full overflow-hidden bg-transparent z-10', |
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{ |
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'relative min-h-full': loaded, |
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'absolute opacity-0': !loaded, |
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'button-focus button-card p-2': onSelect, |
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'ring-partner-primary-bg ring-offset-2 ring-offset-white ring-wp': |
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active, |
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}, |
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)} |
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onKeyDown={(e) => { |
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if (['Enter', 'Space', ' '].includes(e.key)) { |
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onSelect && onSelect({ ...style, variation }) |
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} |
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}} |
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onMouseEnter={() => { |
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if (!onHover) return |
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setHoverCleanup(onHover) |
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}} |
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onMouseLeave={() => { |
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if (hoverCleanup) { |
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hoverCleanup() |
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setHoverCleanup(null) |
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} |
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}} |
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onClick={ |
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onSelect |
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? () => onSelect({ ...style, variation }) |
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: () => {} |
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}> |
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{window?.extOnbData?.devbuild ? ( |
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<div className="-m-px absolute bg-gray-900 border border-t border-white bottom-0 group-hover:opacity-100 left-0 opacity-0 p-1 px-4 text-left text-sm text-white z-30 transition duration-300"> |
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{style?.label} - {Number(loadTime.current).toFixed(2)}ms |
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</div> |
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) : null} |
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<div ref={previewContainer} className="relative rounded-lg"> |
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{inView ? ( |
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<BlockPreview |
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blocks={blocks} |
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viewportWidth={1400} |
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live={false} |
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/> |
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) : null} |
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</div> |
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</div> |
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</> |
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) |
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} |
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|
