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Add a StyleProvider to support CSS-in-JS components inside iframes. #31010

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merged 3 commits into from
Apr 21, 2021
Merged

Add a StyleProvider to support CSS-in-JS components inside iframes. #31010

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7633796
Add a FrameProvider to be used to support CSS-in-JS styles inside ifr…
sarayourfriend Apr 20, 2021
5a46547
Remove weak memoize dependency
youknowriad Apr 21, 2021
3b0732e
Remait it StyleProvider
youknowriad Apr 21, 2021
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1 change: 1 addition & 0 deletions package-lock.json
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9 changes: 8 additions & 1 deletion packages/block-editor/src/components/iframe/index.js
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Original file line number Diff line number Diff line change
Expand Up @@ -9,6 +9,7 @@ import {
} from '@wordpress/element';
import { __ } from '@wordpress/i18n';
import { useMergeRefs } from '@wordpress/compose';
import { __experimentalStyleProvider as StyleProvider } from '@wordpress/components';

const BODY_CLASS_NAME = 'editor-styles-wrapper';
const BLOCK_PREFIX = 'wp-block';
Expand Down Expand Up @@ -182,7 +183,13 @@ function Iframe( { contentRef, children, head, headHTML, ...props }, ref ) {
title={ __( 'Editor canvas' ) }
name="editor-canvas"
>
{ iframeDocument && createPortal( children, iframeDocument.body ) }
{ iframeDocument &&
createPortal(
<StyleProvider iframeDocument={ iframeDocument }>
{ children }
</StyleProvider>,
iframeDocument.body
) }
{ iframeDocument && createPortal( head, iframeDocument.head ) }
</iframe>
);
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1 change: 1 addition & 0 deletions packages/components/package.json
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Expand Up @@ -27,6 +27,7 @@
],
"dependencies": {
"@babel/runtime": "^7.13.10",
"@emotion/cache": "^10.0.27",
"@emotion/core": "^10.1.1",
"@emotion/css": "^10.0.22",
"@emotion/hash": "^0.8.0",
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1 change: 1 addition & 0 deletions packages/components/src/index.js
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Expand Up @@ -132,6 +132,7 @@ export {
Provider as SlotFillProvider,
useSlot as __experimentalUseSlot,
} from './slot-fill';
export { default as __experimentalStyleProvider } from './style-provider';

// Higher-Order Components
export {
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20 changes: 20 additions & 0 deletions packages/components/src/style-provider/index.js
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@@ -0,0 +1,20 @@
/**
* External dependencies
*/
import { CacheProvider } from '@emotion/core';
import createCache from '@emotion/cache';
import memoize from 'memize';

const memoizedCreateCacheWithContainer = memoize( ( container ) => {
return createCache( { container } );
} );

export default function StyleProvider( { children, iframeDocument } ) {
if ( ! iframeDocument ) {
return null;
}

const cache = memoizedCreateCacheWithContainer( iframeDocument.head );

return <CacheProvider value={ cache }>{ children }</CacheProvider>;
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I didn't know this existed. It's great that emotion provides this CacheProvider and consumes it.

}