Tiled Gallery: Increasing accessibility of gallery images with respec…

…t to opening carousels (#37792)

projects/plugins/jetpack/changelog/update-tiled-gallery-carousel-accessibility

@@ -0,0 +1,4 @@
+Significance: patch
+Type: enhancement
+
+Tiled Gallery: Increase accessibility of Tiled Gallery carousel images.

projects/plugins/jetpack/extensions/blocks/tiled-gallery/deprecated/index.js

@@ -3,5 +3,13 @@ import * as deprecatedV2 from './v2';
 import * as deprecatedV3 from './v3';
 import * as deprecatedV4 from './v4';
 import * as deprecatedV5 from './v5';
+import * as deprecatedV6 from './v6';
 
-export default [ deprecatedV5, deprecatedV4, deprecatedV3, deprecatedV2, deprecatedV1 ];
+export default [
+	deprecatedV6,
+	deprecatedV5,
+	deprecatedV4,
+	deprecatedV3,
+	deprecatedV2,
+	deprecatedV1,
+];

projects/plugins/jetpack/extensions/blocks/tiled-gallery/deprecated/v6/attributes.js

@@ -0,0 +1,77 @@
+export default {
+	align: {
+		type: 'string',
+		default: 'center',
+	},
+	className: {
+		type: 'string',
+		default: 'is-style-rectangular',
+	},
+	columns: {
+		type: 'number',
+	},
+	columnWidths: {
+		type: 'array',
+		default: [],
+	},
+	ids: {
+		type: 'array',
+		default: [],
+	},
+	imageFilter: {
+		type: 'string',
+	},
+	images: {
+		type: 'array',
+		default: [],
+		source: 'query',
+		selector: '.tiled-gallery__item',
+		query: {
+			alt: {
+				attribute: 'alt',
+				default: '',
+				selector: 'img',
+				source: 'attribute',
+			},
+			height: {
+				attribute: 'data-height',
+				type: 'number',
+				selector: 'img',
+				source: 'attribute',
+			},
+			id: {
+				attribute: 'data-id',
+				selector: 'img',
+				source: 'attribute',
+			},
+			link: {
+				attribute: 'data-link',
+				selector: 'img',
+				source: 'attribute',
+			},
+			url: {
+				attribute: 'data-url',
+				selector: 'img',
+				source: 'attribute',
+			},
+			width: {
+				attribute: 'data-width',
+				selector: 'img',
+				source: 'attribute',
+				type: 'number',
+			},
+		},
+	},
+	imageCrop: {
+		type: 'boolean',
+		default: true,
+	},
+	linkTo: {
+		default: 'none',
+		type: 'string',
+	},
+	roundedCorners: {
+		type: 'integer',
+		default: 0,
+	},
+};

projects/plugins/jetpack/extensions/blocks/tiled-gallery/deprecated/v6/constants.js

@@ -0,0 +1,29 @@
+export const ALLOWED_MEDIA_TYPES = [ 'image' ];
+export const DEFAULT_GALLERY_WIDTH = 580;
+export const GUTTER_WIDTH = 4;
+export const MAX_COLUMNS = 20;
+export const MAX_ROUNDED_CORNERS = 20;
+export const PHOTON_MAX_RESIZE = 2000;
+
+/**
+ * Layouts
+ */
+export const LAYOUT_CIRCLE = 'circle';
+export const LAYOUT_COLUMN = 'columns';
+export const LAYOUT_DEFAULT = 'rectangular';
+export const LAYOUT_SQUARE = 'square';
+export const LAYOUT_STYLES = [
+	{
+		isDefault: true,
+		name: LAYOUT_DEFAULT,
+	},
+	{
+		name: LAYOUT_CIRCLE,
+	},
+	{
+		name: LAYOUT_SQUARE,
+	},
+	{
+		name: LAYOUT_COLUMN,
+	},
+];

projects/plugins/jetpack/extensions/blocks/tiled-gallery/deprecated/v6/gallery-image/save.js

@@ -0,0 +1,44 @@
+import { isBlobURL } from '@wordpress/blob';
+import clsx from 'clsx';
+
+export default function GalleryImageSave( props ) {
+	const { alt, imageFilter, height, id, link, linkTo, origUrl, url, width } = props;
+
+	if ( isBlobURL( origUrl ) ) {
+		return null;
+	}
+
+	let href;
+
+	switch ( linkTo ) {
+		case 'media':
+			href = origUrl;
+			break;
+		case 'attachment':
+			href = link;
+			break;
+	}
+
+	const img = (
+		<img
+			alt={ alt }
+			data-height={ height }
+			data-id={ id }
+			data-link={ link }
+			data-url={ origUrl }
+			data-width={ width }
+			src={ url }
+			data-amp-layout={ 'responsive' }
+		/>
+	);
+
+	return (
+		<figure
+			className={ clsx( 'tiled-gallery__item', {
+				[ `filter__${ imageFilter }` ]: !! imageFilter,
+			} ) }
+		>
+			{ href ? <a href={ href }>{ img }</a> : img }
+		</figure>
+	);
+}

projects/plugins/jetpack/extensions/blocks/tiled-gallery/deprecated/v6/index.js

@@ -0,0 +1,3 @@
+export { default as attributes } from './attributes';
+export { default as supports } from './supports';
+export { default as save } from './save';

projects/plugins/jetpack/extensions/blocks/tiled-gallery/deprecated/v6/layout/column.js

@@ -0,0 +1,14 @@
+export default function Column( { children, width } ) {
+	// This deprecation fixes inconsistent precision of flex-basis style decimal.
+	// It needs to be adjusted here so that the style value matches the post
+	// content to then trigger re-saving the block.
+	const precision = Math.pow( 10, 12 ); // 1000000000000.
+	const roundedWidth = Math.round( width * precision ) / precision;
+	const style = width ? { flexBasis: `${ roundedWidth }%` } : undefined;
+
+	return (
+		<div className="tiled-gallery__col" style={ style }>
+			{ children }
+		</div>
+	);
+}

projects/plugins/jetpack/extensions/blocks/tiled-gallery/deprecated/v6/layout/gallery.js

@@ -0,0 +1,7 @@
+export default function Gallery( { children, galleryRef } ) {
+	return (
+		<div className="tiled-gallery__gallery" ref={ galleryRef }>
+			{ children }
+		</div>
+	);
+}

projects/plugins/jetpack/extensions/blocks/tiled-gallery/deprecated/v6/layout/index.js

@@ -0,0 +1,106 @@
+import { Component } from '@wordpress/element';
+import { __, sprintf } from '@wordpress/i18n';
+import clsx from 'clsx';
+import { LAYOUT_CIRCLE, MAX_ROUNDED_CORNERS } from '../constants';
+import GalleryImageSave from '../gallery-image/save';
+import { isSquareishLayout, photonizedImgProps } from '../utils';
+import Mosaic from './mosaic';
+import Square from './square';
+
+export default class Layout extends Component {
+	// This is tricky:
+	// - We need to "photonize" to resize the images at appropriate dimensions
+	// - The resize will depend on the image size and the layout in some cases
+	// - Handlers need to be created by index so that the image changes can be applied correctly.
+	//   This is because the images are stored in an array in the block attributes.
+	renderImage( img, i ) {
+		const {
+			columns,
+			imageFilter,
+			images,
+			isSave,
+			linkTo,
+			layoutStyle,
+			onMoveBackward,
+			onMoveForward,
+			onRemoveImage,
+			onSelectImage,
+			selectedImage,
+			setImageAttributes,
+		} = this.props;
+
+		const ariaLabel = sprintf(
+			/* translators: %1$d is the order number of the image, %2$d is the total number of images. */
+			__( 'image %1$d of %2$d in gallery', 'jetpack' ),
+			i + 1,
+			images.length
+		);
+
+		const { src, srcSet } = photonizedImgProps( img, { layoutStyle } );
+
+		return (
+			<GalleryImageSave
+				alt={ img.alt }
+				aria-label={ ariaLabel }
+				columns={ columns }
+				height={ img.height }
+				id={ img.id }
+				imageFilter={ imageFilter }
+				isFirstItem={ i === 0 }
+				isLastItem={ i + 1 === images.length }
+				isSelected={ selectedImage === i }
+				key={ i }
+				link={ img.link }
+				linkTo={ linkTo }
+				onMoveBackward={ isSave ? undefined : onMoveBackward( i ) }
+				onMoveForward={ isSave ? undefined : onMoveForward( i ) }
+				onRemove={ isSave ? undefined : onRemoveImage( i ) }
+				onSelect={ isSave ? undefined : onSelectImage( i ) }
+				origUrl={ img.url }
+				setAttributes={ isSave ? undefined : setImageAttributes( i ) }
+				showMovers={ images.length > 1 }
+				srcSet={ srcSet }
+				url={ src }
+				width={ img.width }
+			/>
+		);
+	}
+
+	render() {
+		const {
+			align,
+			children,
+			className,
+			columns,
+			images,
+			layoutStyle,
+			roundedCorners,
+			onResize,
+			isSave,
+			columnWidths,
+		} = this.props;
+		const LayoutRenderer = isSquareishLayout( layoutStyle ) ? Square : Mosaic;
+		const renderedImages = this.props.images.map( this.renderImage, this );
+		const roundedCornersValue =
+			layoutStyle !== LAYOUT_CIRCLE ? Math.min( roundedCorners, MAX_ROUNDED_CORNERS ) : 0;
+
+		return (
+			<div
+				className={ clsx( className, {
+					[ `has-rounded-corners-${ roundedCornersValue }` ]: roundedCornersValue > 0,
+				} ) }
+			>
+				<LayoutRenderer
+					align={ align }
+					columns={ columns }
+					columnWidths={ isSave ? columnWidths : undefined }
+					images={ images }
+					layoutStyle={ layoutStyle }
+					renderedImages={ renderedImages }
+					onResize={ isSave ? undefined : onResize }
+				/>
+				{ children }
+			</div>
+		);
+	}
+}

projects/plugins/jetpack/extensions/blocks/tiled-gallery/deprecated/v6/layout/mosaic/index.js

@@ -0,0 +1,39 @@
+import { Component, createRef } from '@wordpress/element';
+import Column from '../column';
+import Gallery from '../gallery';
+import Row from '../row';
+import { imagesToRatios, ratiosToColumns, ratiosToMosaicRows } from './ratios';
+
+export default class Mosaic extends Component {
+	gallery = createRef();
+	pendingRaf = null;
+
+	render() {
+		const { align, columns, images, layoutStyle, renderedImages, columnWidths } = this.props;
+
+		const ratios = imagesToRatios( images );
+		const rows =
+			'columns' === layoutStyle
+				? ratiosToColumns( ratios, columns )
+				: ratiosToMosaicRows( ratios, { isWide: [ 'full', 'wide' ].includes( align ) } );
+
+		let cursor = 0;
+		return (
+			<Gallery galleryRef={ this.gallery }>
+				{ rows.map( ( row, rowIndex ) => (
+					<Row key={ rowIndex }>
+						{ row.map( ( colSize, colIndex ) => {
+							const columnImages = renderedImages.slice( cursor, cursor + colSize );
+							cursor += colSize;
+							return (
+								<Column key={ colIndex } width={ columnWidths?.[ rowIndex ]?.[ colIndex ] }>
+									{ columnImages }
+								</Column>
+							);
+						} ) }
+					</Row>
+				) ) }
+			</Gallery>
+		);
+	}
+}