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Feat: Add frameworkCSS to defineComponent #68

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18 changes: 17 additions & 1 deletion packages/component/src/define-component.js
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Original file line number Diff line number Diff line change
@@ -1,5 +1,5 @@
import { Template, TemplateCompiler } from '@semantic-ui/templating';
import { camelToKebab, each, isClient, isServer, kebabToCamel, noop } from '@semantic-ui/utils';
import { camelToKebab, each, isClient, isPlainObject, isServer, kebabToCamel, noop } from '@semantic-ui/utils';
import { unsafeCSS } from 'lit';

import { adjustPropertyFromAttribute } from './helpers/adjust-property-from-attribute.js';
Expand All @@ -11,6 +11,7 @@ export const defineComponent = ({
ast,
css = '',
pageCSS = '',
frameworkCSS = {},
tagName,
delegatesFocus = false,
templateName = kebabToCamel(tagName),
Expand Down Expand Up @@ -57,6 +58,21 @@ export const defineComponent = ({
adoptStylesheet(pageCSS);
}

if (frameworkCSS) {
if (isPlainObject(frameworkCSS)) {
each(frameworkCSS, (css, id) => {
adoptStylesheet(css, {
hash: id,
cacheStylesheet: true,
});
});
}
else if (isString(frameworkCSS)) {
adoptStylesheet(frameworkCSS, {
cacheStylesheet: true,
});
}
}

/*
Create Component Returns Either a Template or WebComponent
Expand Down
41 changes: 31 additions & 10 deletions packages/component/src/helpers/adopt-stylesheet.js
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Original file line number Diff line number Diff line change
@@ -1,34 +1,55 @@
import { hashCode, isServer } from '@semantic-ui/utils';
import { scopeStyles } from './scope-styles.js';

export const adoptStylesheet = (css, adoptedElement, { scopeSelector } = {}) => {
export const adoptStylesheet = (css, adoptedElement, {
scopeSelector,
hash = hashCode(css),
cacheStylesheet = false,
} = {}) => {
if (isServer) {
return;
}
if (!adoptedElement) {
adoptedElement = document;
}

const hash = hashCode(css);
if (!adoptedElement.cssHashes) {
adoptedElement.cssHashes = [];
}
// already added
if (adoptedElement.cssHashes.includes(hash)) {
// already added
return;
}

adoptedElement.cssHashes.push(hash);

const stylesheet = new CSSStyleSheet();
let stylesheet;

// allow selectors to be scoped if passed in
// i.e .foo => .scope .foo
if (scopeSelector) {
css = scopeStyles(css, scopeSelector);
if (cacheStylesheet && document.cachedStylesheets[hash]) {
// reuse stylesheet if cached
stylesheet = documnet.cachedStylesheets[hash];
}
stylesheet.id = hash;
stylesheet.replaceSync(css);
else {
// otherwise create from scratch
stylesheet = new CSSStyleSheet();

// allow selectors to be scoped if passed in
// i.e .foo => .scope .foo
if (scopeSelector) {
css = scopeStyles(css, scopeSelector);
}
stylesheet.id = hash;
stylesheet.replaceSync(css);
}

// store stylesheet globally in cache for reuse if specified
if (cacheStylesheet) {
if (!document.cachedStylesheets) {
document.cachedStylesheets = {};
}
document.cachedStylesheets[hash] = stylesheet;
}

// adopt this stylesheet after others
adoptedElement.adoptedStyleSheets = [
...adoptedElement.adoptedStyleSheets,
Expand Down