Add duplicate template part command

Refactored during rebased post dataviews change on Patterns site editor page.

packages/edit-site/src/components/create-template-part-modal/index.js

@@ -57,6 +57,7 @@ export function CreateTemplatePartModalContents( {
 	defaultArea = TEMPLATE_PART_AREA_DEFAULT_CATEGORY,
 	blocks = [],
 	confirmLabel = __( 'Create' ),
+	content,
 	closeModal,
 	onCreate,
 	onError,
@@ -95,7 +96,7 @@ export function CreateTemplatePartModalContents( {
 				{
 					slug: cleanSlug,
 					title: uniqueTitle,
-					content: serialize( blocks ),
+					content: content || serialize( blocks ),
 					area,
 				},
 				{ throwOnError: true }

packages/edit-site/src/components/template-part-modal/duplicate.js

@@ -0,0 +1,93 @@
+/**
+ * WordPress dependencies
+ */
+import { useDispatch, useSelect } from '@wordpress/data';
+import { __, sprintf } from '@wordpress/i18n';
+import { store as interfaceStore } from '@wordpress/interface';
+import { store as noticesStore } from '@wordpress/notices';
+import { privateApis as routerPrivateApis } from '@wordpress/router';
+import { getQueryArgs } from '@wordpress/url';
+
+/**
+ * Internal dependencies
+ */
+import CreateTemplatePartModal from '../create-template-part-modal';
+import useEditedEntityRecord from '../use-edited-entity-record';
+import { TEMPLATE_PART_MODALS } from './';
+import { unlock } from '../../lock-unlock';
+import { TEMPLATE_PART_POST_TYPE } from '../../utils/constants';
+
+const { useHistory } = unlock( routerPrivateApis );
+
+function DuplicateModal( { templatePart, onClose, onSuccess } ) {
+	const { createSuccessNotice } = useDispatch( noticesStore );
+
+	function handleOnSuccess( newTemplatePart ) {
+		createSuccessNotice(
+			sprintf(
+				// translators: %s: The new template part's title e.g. 'Call to action (copy)'.
+				__( '"%s" duplicated.' ),
+				templatePart.title
+			),
+			{
+				type: 'snackbar',
+				id: 'template-parts-create',
+			}
+		);
+
+		onSuccess?.( newTemplatePart );
+	}
+
+	return (
+		<CreateTemplatePartModal
+			content={ templatePart.content }
+			closeModal={ onClose }
+			confirmLabel={ __( 'Duplicate' ) }
+			defaultArea={ templatePart.area }
+			defaultTitle={ sprintf(
+				/* translators: %s: Existing template part title */
+				__( '%s (Copy)' ),
+				typeof templatePart.title === 'string'
+					? templatePart.title
+					: templatePart.title.raw
+			) }
+			modalTitle={ __( 'Duplicate template part' ) }
+			onCreate={ handleOnSuccess }
+			onError={ onClose }
+		/>
+	);
+}
+
+export default function TemplatePartDuplicateModal() {
+	const { record } = useEditedEntityRecord();
+	const { categoryType, categoryId } = getQueryArgs( window.location.href );
+	const { closeModal } = useDispatch( interfaceStore );
+	const history = useHistory();
+
+	const isActive = useSelect( ( select ) =>
+		select( interfaceStore ).isModalActive( TEMPLATE_PART_MODALS.duplicate )
+	);
+
+	if ( ! isActive ) {
+		return null;
+	}
+
+	function onSuccess( newTemplatePart ) {
+		history.push( {
+			postType: TEMPLATE_PART_POST_TYPE,
+			postId: newTemplatePart.id,
+			categoryType,
+			categoryId,
+		} );
+
+		closeModal();
+	}
+
+	return (
+		<DuplicateModal
+			onClose={ closeModal }
+			onSuccess={ onSuccess }
+			templatePart={ record }
+		/>
+	);
+}

packages/edit-site/src/components/template-part-modal/index.js

@@ -1,6 +1,7 @@
 /**
  * Internal dependencies
  */
+import TemplatePartDuplicateModal from './duplicate';
 import TemplatePartRenameModal from './rename';
 
 export const TEMPLATE_PART_MODALS = {
@@ -9,11 +10,10 @@ export const TEMPLATE_PART_MODALS = {
 };
 
 export default function TemplatePartModal() {
-	// Duplication command and modal is in separate follow-up.
 	return (
 		<>
 			<TemplatePartRenameModal />
-			{ /* <PatternDuplicateModal /> */ }
+			<TemplatePartDuplicateModal />
 		</>
 	);
 }

packages/edit-site/src/hooks/commands/use-edit-mode-commands.js

@@ -290,15 +290,23 @@ function usePatternCommands() {
 			commands.push( {
 				name: 'core/rename-template-part',
 				label: __( 'Rename template part' ),
-				icon: symbol,
+				icon: edit,
 				callback: ( { close } ) => {
 					openModal( TEMPLATE_PART_MODALS.rename );
 					close();
 				},
 			} );
 		}
 
-		// All template parts will be eligible for duplication in a follow-up.
+		commands.push( {
+			name: 'core/duplicate-template-part',
+			label: __( 'Duplicate template part' ),
+			icon: symbol,
+			callback: ( { close } ) => {
+				openModal( TEMPLATE_PART_MODALS.duplicate );
+				close();
+			},
+		} );
 	}
 
 	return { isLoading: false, commands };