Block Bindings: Disable editing of bound block attributes in editor UI

packages/block-editor/src/components/block-list/content.scss

@@ -89,7 +89,7 @@ _::-webkit-full-page-media, _:future, :root .has-multi-selection .block-editor-b
 	.block-editor-block-list__block.is-highlighted,
 	.block-editor-block-list__block.is-highlighted ~ .is-multi-selected,
 	&.is-navigate-mode .block-editor-block-list__block.is-selected,
-	.block-editor-block-list__block:not([contenteditable]):focus {
+	.block-editor-block-list__block:not([contenteditable="true"]):focus {
 		outline: none;
 
 		// We're using a pseudo element to overflow placeholder borders

packages/block-editor/src/components/rich-text/index.js

@@ -19,6 +19,7 @@ import {
 	removeFormat,
 } from '@wordpress/rich-text';
 import { Popover } from '@wordpress/components';
+import { getBlockType } from '@wordpress/blocks';
 
 /**
  * Internal dependencies
@@ -44,6 +45,7 @@ import FormatEdit from './format-edit';
 import { getAllowedFormats } from './utils';
 import { Content } from './content';
 import { withDeprecations } from './with-deprecations';
+import { unlock } from '../../lock-unlock';
 
 export const keyboardShortcutContext = createContext();
 export const inputEventContext = createContext();
@@ -113,18 +115,24 @@ export function RichTextWrapper(
 	props = removeNativeProps( props );
 
 	const anchorRef = useRef();
-	const { clientId, isSelected: isBlockSelected } = useBlockEditContext();
+	const {
+		clientId,
+		isSelected: isBlockSelected,
+		name: blockName,
+	} = useBlockEditContext();
 	const selector = ( select ) => {
 		// Avoid subscribing to the block editor store if the block is not
 		// selected.
 		if ( ! isBlockSelected ) {
 			return { isSelected: false };
 		}
 
-		const { getSelectionStart, getSelectionEnd } =
+		const { getSelectionStart, getSelectionEnd, getBlockAttributes } =
 			select( blockEditorStore );
 		const selectionStart = getSelectionStart();
 		const selectionEnd = getSelectionEnd();
+		const blockBindings =
+			getBlockAttributes( clientId )?.metadata?.bindings;
 
 		let isSelected;
 
@@ -137,18 +145,44 @@ export function RichTextWrapper(
 			isSelected = selectionStart.clientId === clientId;
 		}
 
+		// Disable Rich Text editing if block bindings specify that.
+		let shouldDisableEditing = false;
+		if ( blockBindings ) {
+			const blockTypeAttributes = getBlockType( blockName ).attributes;
+			const { getBlockBindingsSource } = unlock(
+				select( blockEditorStore )
+			);
+			for ( const [ attribute, args ] of Object.entries(
+				blockBindings
+			) ) {
+				// If any of the attributes with source "rich-text" is part of the bindings,
+				// has a source with `lockAttributesEditing`, disable it.
+				if (
+					blockTypeAttributes?.[ attribute ]?.source ===
+						'rich-text' &&
+					getBlockBindingsSource( args.source.name )
+						?.lockAttributesEditing
+				) {
+					shouldDisableEditing = true;
+					break;
+				}
+			}
+		}
+
 		return {
 			selectionStart: isSelected ? selectionStart.offset : undefined,
 			selectionEnd: isSelected ? selectionEnd.offset : undefined,
 			isSelected,
+			shouldDisableEditing,
 		};
 	};
-	const { selectionStart, selectionEnd, isSelected } = useSelect( selector, [
-		clientId,
-		identifier,
-		originalIsSelected,
-		isBlockSelected,
-	] );
+	const { selectionStart, selectionEnd, isSelected, shouldDisableEditing } =
+		useSelect( selector, [
+			clientId,
+			identifier,
+			originalIsSelected,
+			isBlockSelected,
+		] );
 	const { getSelectionStart, getSelectionEnd, getBlockRootClientId } =
 		useSelect( blockEditorStore );
 	const { selectionChange } = useDispatch( blockEditorStore );
@@ -376,7 +410,7 @@ export function RichTextWrapper(
 					useFirefoxCompat(),
 					anchorRef,
 				] ) }
-				contentEditable={ true }
+				contentEditable={ ! shouldDisableEditing }
 				suppressContentEditableWarning={ true }
 				className={ classnames(
 					'block-editor-rich-text__editable',
@@ -389,7 +423,11 @@ export function RichTextWrapper(
 				// select blocks when Shift Clicking into an element with
 				// tabIndex because Safari will focus the element. However,
 				// Safari will correctly ignore nested contentEditable elements.
-				tabIndex={ props.tabIndex === 0 ? null : props.tabIndex }
+				tabIndex={
+					props.tabIndex === 0 && ! shouldDisableEditing
+						? null
+						: props.tabIndex
+				}
 				data-wp-block-attribute-key={ identifier }
 			/>
 		</>

packages/block-editor/src/hooks/index.js

@@ -27,6 +27,7 @@ import contentLockUI from './content-lock-ui';
 import './metadata';
 import blockHooks from './block-hooks';
 import blockRenaming from './block-renaming';
+import './use-bindings-attributes';
 
 createBlockEditFilter(
 	[

packages/block-editor/src/hooks/use-bindings-attributes.js

@@ -0,0 +1,148 @@
+/**
+ * WordPress dependencies
+ */
+import { getBlockType } from '@wordpress/blocks';
+import { createHigherOrderComponent } from '@wordpress/compose';
+import { useRegistry, useSelect } from '@wordpress/data';
+import { addFilter } from '@wordpress/hooks';
+/**
+ * Internal dependencies
+ */
+import { store as blockEditorStore } from '../store';
+import { useBlockEditContext } from '../components/block-edit/context';
+import { unlock } from '../lock-unlock';
+
+/** @typedef {import('@wordpress/compose').WPHigherOrderComponent} WPHigherOrderComponent */
+/** @typedef {import('@wordpress/blocks').WPBlockSettings} WPBlockSettings */
+
+/**
+ * Given a binding of block attributes, returns a higher order component that
+ * overrides its `attributes` and `setAttributes` props to sync any changes needed.
+ *
+ * @return {WPHigherOrderComponent} Higher-order component.
+ */
+
+const BLOCK_BINDINGS_ALLOWED_BLOCKS = {
+	'core/paragraph': [ 'content' ],
+	'core/heading': [ 'content' ],
+	'core/image': [ 'url', 'title', 'alt' ],
+	'core/button': [ 'url', 'text' ],
+};
+
+const createEditFunctionWithBindingsAttribute = () =>
+	createHigherOrderComponent(
+		( BlockEdit ) => ( props ) => {
+			const { clientId, name: blockName } = useBlockEditContext();
+			const { getBlockBindingsSource } = unlock(
+				useSelect( blockEditorStore )
+			);
+			const { getBlockAttributes, updateBlockAttributes } =
+				useSelect( blockEditorStore );
+
+			const updatedAttributes = getBlockAttributes( clientId );
+			if ( updatedAttributes?.metadata?.bindings ) {
+				Object.entries( updatedAttributes.metadata.bindings ).forEach(
+					( [ attributeName, settings ] ) => {
+						const source = getBlockBindingsSource(
+							settings.source.name
+						);
+
+						if ( source ) {
+							// Second argument (`updateMetaValue`) will be used to update the value in the future.
+							const {
+								placeholder,
+								useValue: [ metaValue = null ] = [],
+							} = source.useSource(
+								props,
+								settings.source.attributes
+							);
+
+							if ( placeholder && ! metaValue ) {
+								// If the attribute is `src` or `href`, a placeholder can't be used because it is not a valid url.
+								// Adding this workaround until attributes and metadata fields types are improved and include `url`.
+								const htmlAttribute =
+									getBlockType( blockName ).attributes[
+										attributeName
+									].attribute;
+								if (
+									htmlAttribute === 'src' ||
+									htmlAttribute === 'href'
+								) {
+									updatedAttributes[ attributeName ] = null;
+								} else {
+									updatedAttributes[ attributeName ] =
+										placeholder;
+								}
+							}
+
+							if ( metaValue ) {
+								updatedAttributes[ attributeName ] = metaValue;
+							}
+						}
+					}
+				);
+			}
+
+			const registry = useRegistry();
+
+			return (
+				<>
+					<BlockEdit
+						key="edit"
+						attributes={ updatedAttributes }
+						setAttributes={ ( newAttributes, blockId ) =>
+							registry.batch( () =>
+								updateBlockAttributes( blockId, newAttributes )
+							)
+						}
+						{ ...props }
+					/>
+				</>
+			);
+		},
+		'useBoundAttributes'
+	);
+
+/**
+ * Filters a registered block's settings to enhance a block's `edit` component
+ * to upgrade bound attributes.
+ *
+ * @param {WPBlockSettings} settings Registered block settings.
+ *
+ * @return {WPBlockSettings} Filtered block settings.
+ */
+function shimAttributeSource( settings ) {
+	if ( ! ( settings.name in BLOCK_BINDINGS_ALLOWED_BLOCKS ) ) {
+		return settings;
+	}
+	settings.edit = createEditFunctionWithBindingsAttribute()( settings.edit );
+
+	return settings;
+}
+
+addFilter(
+	'blocks.registerBlockType',
+	'core/editor/custom-sources-backwards-compatibility/shim-attribute-source',
+	shimAttributeSource
+);
+
+// Add the context to all blocks.
+addFilter(
+	'blocks.registerBlockType',
+	'core/block-bindings-ui',
+	( settings, name ) => {
+		if ( ! ( name in BLOCK_BINDINGS_ALLOWED_BLOCKS ) ) {
+			return settings;
+		}
+		const contextItems = [ 'postId', 'postType', 'queryId' ];
+		const usesContextArray = settings.usesContext;
+		const oldUsesContextArray = new Set( usesContextArray );
+		contextItems.forEach( ( item ) => {
+			if ( ! oldUsesContextArray.has( item ) ) {
+				usesContextArray.push( item );
+			}
+		} );
+		settings.usesContext = usesContextArray;
+		return settings;
+	}
+);

packages/block-editor/src/store/private-actions.js

@@ -360,3 +360,13 @@ export function stopEditingAsBlocks( clientId ) {
 		dispatch.__unstableSetTemporarilyEditingAsBlocks();
 	};
 }
+
+export function registerBlockBindingsSource( source ) {
+	return {
+		type: 'REGISTER_BLOCK_BINDINGS_SOURCE',
+		sourceName: source.name,
+		sourceLabel: source.label,
+		useSource: source.useSource,
+		lockAttributesEditing: source.lockAttributesEditing,
+	};
+}

packages/block-editor/src/store/private-selectors.js

@@ -341,3 +341,11 @@ export const getAllPatterns = createRegistrySelector( ( select ) =>
 export function getLastFocus( state ) {
 	return state.lastFocus;
 }
+
+export function getAllBlockBindingsSources( state ) {
+	return state.blockBindingsSources;
+}
+
+export function getBlockBindingsSource( state, sourceName ) {
+	return state.blockBindingsSources[ sourceName ];
+}

packages/block-editor/src/store/reducer.js

@@ -2023,6 +2023,20 @@ export function lastFocus( state = false, action ) {
 	return state;
 }
 
+function blockBindingsSources( state = {}, action ) {
+	if ( action.type === 'REGISTER_BLOCK_BINDINGS_SOURCE' ) {
+		return {
+			...state,
+			[ action.sourceName ]: {
+				label: action.sourceLabel,
+				useSource: action.useSource,
+				lockAttributesEditing: action.lockAttributesEditing,
+			},
+		};
+	}
+	return state;
+}
+
 function blockPatterns( state = [], action ) {
 	switch ( action.type ) {
 		case 'RECEIVE_BLOCK_PATTERNS':
@@ -2062,6 +2076,7 @@ const combinedReducers = combineReducers( {
 	blockRemovalRules,
 	openedBlockSettingsMenu,
 	registeredInserterMediaCategories,
+	blockBindingsSources,
 	blockPatterns,
 } );