Heading: Enable heading level curation

docs/reference-guides/core-blocks.md

@@ -360,7 +360,7 @@ Introduce new sections and organize content to help visitors (and search engines
 -	**Name:** core/heading
 -	**Category:** text
 -	**Supports:** __unstablePasteTextInline, align (full, wide), anchor, className, color (background, gradients, link, text), interactivity (clientNavigation), spacing (margin, padding), splitting, typography (fontSize, lineHeight)
--	**Attributes:** content, level, placeholder, textAlign
+-	**Attributes:** content, level, levelOptions, placeholder, textAlign
 
 ## Home Link
 

packages/block-library/src/heading/block.json

@@ -21,6 +21,9 @@
 			"type": "number",
 			"default": 2
 		},
+		"levelOptions": {
+			"type": "array"
+		},
 		"placeholder": {
 			"type": "string"
 		}

packages/block-library/src/heading/edit.js

@@ -32,7 +32,8 @@ function HeadingEdit( {
 	style,
 	clientId,
 } ) {
-	const { textAlign, content, level, placeholder, anchor } = attributes;
+	const { textAlign, content, level, levelOptions, placeholder, anchor } =
+		attributes;
 	const tagName = 'h' + level;
 	const blockProps = useBlockProps( {
 		className: clsx( {
@@ -95,6 +96,7 @@ function HeadingEdit( {
 				<BlockControls group="block">
 					<HeadingLevelDropdown
 						value={ level }
+						options={ levelOptions }
 						onChange={ ( newLevel ) =>
 							setAttributes( { level: newLevel } )
 						}