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import { getBlockType, parse, serialize } from '@wordpress/blocks'; |
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import { colord } from 'colord'; |
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|
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const isMergeable = (value) => |
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value && typeof value === 'object' && !Array.isArray(value); |
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|
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// Result aliases both inputs' subtrees — every helper below must not mutate. |
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const deepMerge = (base, patch) => { |
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const out = { ...base }; |
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for (const [key, value] of Object.entries(patch)) { |
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if (value == null) continue; |
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out[key] = |
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isMergeable(value) && isMergeable(out[key]) |
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? deepMerge(out[key], value) |
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: value; |
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} |
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return out; |
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}; |
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|
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const setIn = (obj, parts, value) => { |
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const [head, ...rest] = parts; |
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if (!rest.length) return { ...obj, [head]: value }; |
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const child = isMergeable(obj?.[head]) ? obj[head] : {}; |
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return { ...obj, [head]: setIn(child, rest, value) }; |
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}; |
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const setPath = (attributes, path, value) => |
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setIn(attributes, path.split('.'), value); |
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|
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const unsetIn = (obj, parts) => { |
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const [head, ...rest] = parts; |
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if (!isMergeable(obj) || !(head in obj)) return obj; |
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if (!rest.length) { |
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const { [head]: _, ...kept } = obj; |
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return kept; |
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} |
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return { ...obj, [head]: unsetIn(obj[head], rest) }; |
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}; |
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const unsetPath = (attributes, path) => unsetIn(attributes, path.split('.')); |
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|
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const dropClasses = (attributes, shouldDrop) => { |
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if (!attributes.className) return attributes; |
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const kept = attributes.className |
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.split(/\s+/) |
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.filter((cls) => cls && !shouldDrop(cls)) |
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.join(' '); |
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if (kept) return { ...attributes, className: kept }; |
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return unsetPath(attributes, 'className'); |
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}; |
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|
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// Baked preset color classes (has-primary-color) carry !important and outrank |
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// the custom color; save() regenerates the generic markers, so only named ones go. |
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const isPresetColorClass = |
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({ text, background }) => |
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(cls) => { |
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const isBgPreset = /^has-[\w-]+-background-color$/.test(cls); |
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const isTextPreset = |
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/^has-[\w-]+-color$/.test(cls) && |
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!isBgPreset && |
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cls !== 'has-text-color' && |
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cls !== 'has-link-color'; |
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return Boolean((text && isTextPreset) || (background && isBgPreset)); |
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}; |
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|
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const COLOR_CHANNELS = [ |
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['backgroundColor', 'background'], |
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['textColor', 'text'], |
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]; |
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|
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// A known slug maps to a theme preset class; anything else routes to inline |
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// style.color.* — so "yellow" (no matching token) never lands on a wrong slug. |
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const routeColors = (attributes, patch, colorSlugs) => { |
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const slugs = new Set(colorSlugs ?? []); |
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const stripped = {}; |
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let out = attributes; |
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for (const [named, key] of COLOR_CHANNELS) { |
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const value = patch?.[named]; |
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if (value == null) continue; |
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if (slugs.has(value)) { |
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out = unsetPath(out, `style.color.${key}`); |
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continue; |
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} |
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const parsed = colord(value); |
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out = setPath( |
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out, |
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`style.color.${key}`, |
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parsed.isValid() ? parsed.toHex() : value, |
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); |
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out = unsetPath(out, named); |
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stripped[key] = true; |
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} |
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if (stripped.text || stripped.background) { |
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out = dropClasses(out, isPresetColorClass(stripped)); |
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} |
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return out; |
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}; |
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|
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// fontSize / fontFamily mirror the color routing: known slug → named attribute |
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// (preset class), anything else → the inline style path. |
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const NAMED_PRESETS = [ |
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{ |
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named: 'fontSize', |
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path: 'style.typography.fontSize', |
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slugs: 'fontSize', |
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classRe: /^has-[\w-]+-font-size$/, |
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}, |
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{ |
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named: 'fontFamily', |
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path: 'style.typography.fontFamily', |
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slugs: 'fontFamily', |
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classRe: /^has-[\w-]+-font-family$/, |
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}, |
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]; |
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|
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const routeNamedPresets = (attributes, patch, presetSlugs) => { |
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const strippers = []; |
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let out = attributes; |
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for (const { named, path, slugs, classRe } of NAMED_PRESETS) { |
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const value = patch?.[named]; |
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if (value == null) continue; |
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if (new Set(presetSlugs?.[slugs] ?? []).has(value)) { |
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out = unsetPath(out, path); |
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continue; |
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} |
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out = unsetPath(setPath(out, path, value), named); |
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strippers.push(classRe); |
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} |
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if (strippers.length) { |
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out = dropClasses(out, (cls) => strippers.some((re) => re.test(cls))); |
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} |
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return out; |
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}; |
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|
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// Which color side a cleared path removes, so its baked preset class goes too. |
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const CLEAR_COLOR_SIDE = { |
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backgroundColor: 'background', |
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'style.color.background': 'background', |
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textColor: 'text', |
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'style.color.text': 'text', |
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}; |
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|
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// A routed field lands in a named attr or an inline style; clearing must unset both. |
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const ROUTED_PAIRS = [ |
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['backgroundColor', 'style.color.background'], |
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['textColor', 'style.color.text'], |
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['gradient', 'style.color.gradient'], |
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...NAMED_PRESETS.map(({ named, path }) => [named, path]), |
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]; |
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const CLEAR_ALIASES = Object.fromEntries( |
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ROUTED_PAIRS.flatMap((pair) => pair.map((p) => [p, pair])), |
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); |
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|
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// null means "no change", so removal has its own channel: paths listed to reset. |
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const applyClears = (attributes, clear) => { |
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const sides = {}; |
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let out = attributes; |
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for (const path of clear) { |
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for (const p of CLEAR_ALIASES[path] ?? [path]) out = unsetPath(out, p); |
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if (CLEAR_COLOR_SIDE[path]) sides[CLEAR_COLOR_SIDE[path]] = true; |
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} |
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if (sides.text || sides.background) { |
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out = dropClasses(out, isPresetColorClass(sides)); |
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} |
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return out; |
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}; |
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|
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// The model always says `text`; blocks whose rich text is `content` need the remap. |
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const remapText = (block, patch) => { |
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if (patch?.text == null) return patch; |
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const attributes = getBlockType(block.name)?.attributes ?? {}; |
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if (attributes.text || !attributes.content) return patch; |
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const { text, ...rest } = patch; |
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return { ...rest, content: text }; |
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}; |
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|
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// Re-serializing runs the block's own save(), which core/button needs to render |
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// the color/border styles it marks __experimentalSkipSerialization. |
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export const applyBlockPatch = ( |
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serializedBlock, |
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patch, |
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clear = [], |
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presetSlugs = {}, |
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) => { |
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const blocks = parse(serializedBlock).map((block) => { |
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if (!block.name) return block; |
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const merged = deepMerge(block.attributes, remapText(block, patch)); |
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const routed = routeNamedPresets( |
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routeColors(merged, patch, presetSlugs.color), |
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patch, |
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presetSlugs, |
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); |
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return { ...block, attributes: applyClears(routed, clear ?? []) }; |
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}); |
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return serialize(blocks); |
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}; |
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|
