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Support the innerContent-based Custom HTML block #214

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Merged
t-hamano merged 6 commits into from
Jul 19, 2026
Merged

Support the innerContent-based Custom HTML block #214

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815c272
Support the innerContent-based Custom HTML block (WP 7.1)
t-hamano Jul 18, 2026
98efd50
Render embedded inner blocks as editable and add a preview placeholder
t-hamano Jul 18, 2026
267a565
Detect preview via isPreviewMode instead of Disabled context
t-hamano Jul 18, 2026
68c15c7
Render preview via InnerContent only, dropping the sandboxed preview
t-hamano Jul 18, 2026
03f4a73
Type block-editor privateApis to drop the unknown cast
t-hamano Jul 19, 2026
481111c
Declare @wordpress/private-apis as a direct dependency
t-hamano Jul 19, 2026
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1 change: 1 addition & 0 deletions package-lock.json
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1 change: 1 addition & 0 deletions package.json
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Original file line number Diff line number Diff line change
Expand Up @@ -55,6 +55,7 @@
"@wordpress/i18n": "^6.21.1",
"@wordpress/keycodes": "^4.34.0",
"@wordpress/notices": "^5.48.1",
"@wordpress/private-apis": "^1.49.0",
"@wordpress/scripts": "^32.4.1",
"clsx": "2.1.1",
"husky": "^9.1.7",
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204 changes: 204 additions & 0 deletions src/block-editor/edit-legacy.tsx
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Original file line number Diff line number Diff line change
@@ -0,0 +1,204 @@
/**
* WordPress dependencies
*/
import { __ } from '@wordpress/i18n';
import { useMemo, useState, useRef } from '@wordpress/element';
import { useSelect } from '@wordpress/data';
import {
BlockControls,
transformStyles,
useBlockProps,
store as blockEditorStore,
} from '@wordpress/block-editor';
import {
ResizableBox,
ToolbarButton,
Disabled,
SandBox,
ToolbarGroup,
Modal,
Notice,
} from '@wordpress/components';
import { Stack } from '@wordpress/ui';
import { fullscreen } from '@wordpress/icons';
import type { BlockEditProps } from '@wordpress/blocks';

/**
* Internal dependencies
*/
import './style.scss';
import MonacoEditor, { type MonacoError } from '../components/monaco-editor';

type HTMLEditProps = BlockEditProps< {
content: string;
height: number;
} > & {
// Injected by the block editor but not included in BlockEditProps.
toggleSelection: ( isSelectionEnabled: boolean ) => void;
};

const MIN_HEIGHT = 100;
const MAX_HEIGHT = 1000;

const DEFAULT_STYLES = `
html,body,:root {
margin: 0 !important;
padding: 0 !important;
overflow: visible !important;
min-height: auto !important;
}
`;

export default function HTMLEdit( {
attributes,
isSelected,
setAttributes,
toggleSelection,
}: HTMLEditProps ) {
const { content, height } = attributes;
const { editorSettings, editorOptions } = window.chbeObj;

const [ isPreview, setIsPreview ] = useState< boolean >();
const [ isModalEditorOpen, setIsModalEditorOpen ] = useState< boolean >();

const [ errorMessage, setErrorMessage ] = useState< string >();

const ref = useRef< HTMLDivElement >( null );

const settingStyles = useSelect(
( select ) => select( blockEditorStore ).getSettings().styles,
[]
);

const styles = useMemo(
() => [
DEFAULT_STYLES,
...transformStyles(
( settingStyles ?? [] ).filter( ( style: { css?: string } ) => style.css )
),
],
[ settingStyles ]
);

const onResizeStart = () => {
toggleSelection( false );
};

const onResizeStop = (
_event: unknown,
_direction: unknown,
_elt: unknown,
delta: { height: number }
) => {
const newHeight = Math.min(
Math.max( parseInt( `${ height + delta.height }`, 10 ), MIN_HEIGHT ),
MAX_HEIGHT
);
setAttributes( { height: newHeight } );
};

const onChange = ( value: string ) => {
setAttributes( { content: value } );
};

const onError = ( error: MonacoError ) => {
if ( ( error.type === 'timeout' || error.type === 'scripterror' ) && error.msg ) {
setErrorMessage( error.msg );
}
};

function switchToPreview() {
setIsPreview( true );
}

function switchToHTML() {
setIsPreview( false );
}

return (
<div { ...useBlockProps( { ref, className: 'block-library-html__edit' } ) }>
<BlockControls>
{ ! isPreview && (
<ToolbarGroup>
<ToolbarButton
icon={ fullscreen }
label={ __( 'Open HTML editor', 'custom-html-block-extension' ) }
onClick={ () => setIsModalEditorOpen( true ) }
/>
</ToolbarGroup>
) }
<ToolbarGroup>
<ToolbarButton isPressed={ ! isPreview } onClick={ switchToHTML }>
{ __( 'HTML', 'custom-html-block-extension' ) }
</ToolbarButton>
<ToolbarButton isPressed={ isPreview } onClick={ switchToPreview }>
{ __( 'Preview', 'custom-html-block-extension' ) }
</ToolbarButton>
</ToolbarGroup>
</BlockControls>
<Disabled.Consumer>
{ ( isDisabled ) =>
isPreview || isDisabled ? (
<>
<SandBox html={ content } styles={ styles } />
{ ! isSelected && <div className="block-library-html__preview-overlay"></div> }
</>
) : (
<Stack direction="column" gap="sm">
{ errorMessage && <Notice status="warning">{ errorMessage }</Notice> }
<ResizableBox
size={ { height } }
minHeight={ MIN_HEIGHT }
enable={ {
top: false,
right: false,
bottom: true,
left: false,
topRight: false,
bottomRight: false,
bottomLeft: false,
topLeft: false,
} }
onResizeStart={ onResizeStart }
onResizeStop={ onResizeStop }
showHandle={ isSelected }
>
<MonacoEditor
language="html"
theme={ editorSettings.theme }
options={ editorOptions }
value={ content }
useEmmet={ editorSettings.emmet }
tabSize={ editorSettings.tabSize }
insertSpaces={ editorSettings.insertSpaces }
onChange={ onChange }
onError={ onError }
/>
</ResizableBox>
</Stack>
)
}
</Disabled.Consumer>
{ isModalEditorOpen && (
<Modal
title={ __( 'HTML editor', 'custom-html-block-extension' ) }
className="chbe-fullscreen-editor"
isFullScreen
onRequestClose={ () => setIsModalEditorOpen( false ) }
>
<MonacoEditor
language="html"
theme={ editorSettings.theme }
options={ editorOptions }
value={ content }
useEmmet={ editorSettings.emmet }
tabSize={ editorSettings.tabSize }
insertSpaces={ editorSettings.insertSpaces }
onChange={ onChange }
onError={ onError }
/>
</Modal>
) }
</div>
);
}
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