[ Index ] |
PHP Cross Reference of WordPress |
[Summary view] [Print] [Text view]
1 <?php 2 /** 3 * Server-side rendering of the `core/gallery` block. 4 * 5 * @package WordPress 6 */ 7 8 /** 9 * Handles backwards compatibility for Gallery Blocks, 10 * whose images feature a `data-id` attribute. 11 * 12 * Now that the Gallery Block contains inner Image Blocks, 13 * we add a custom `data-id` attribute before rendering the gallery 14 * so that the Image Block can pick it up in its render_callback. 15 * 16 * @param array $parsed_block The block being rendered. 17 * @return array The migrated block object. 18 */ 19 function block_core_gallery_data_id_backcompatibility( $parsed_block ) { 20 if ( 'core/gallery' === $parsed_block['blockName'] ) { 21 foreach ( $parsed_block['innerBlocks'] as $key => $inner_block ) { 22 if ( 'core/image' === $inner_block['blockName'] ) { 23 if ( ! isset( $parsed_block['innerBlocks'][ $key ]['attrs']['data-id'] ) && isset( $inner_block['attrs']['id'] ) ) { 24 $parsed_block['innerBlocks'][ $key ]['attrs']['data-id'] = esc_attr( $inner_block['attrs']['id'] ); 25 } 26 } 27 } 28 } 29 30 return $parsed_block; 31 } 32 33 add_filter( 'render_block_data', 'block_core_gallery_data_id_backcompatibility' ); 34 35 /** 36 * Adds a style tag for the --wp--style--unstable-gallery-gap var. 37 * 38 * The Gallery block needs to recalculate Image block width based on 39 * the current gap setting in order to maintain the number of flex columns 40 * so a css var is added to allow this. 41 * 42 * @param array $attributes Attributes of the block being rendered. 43 * @param string $content Content of the block being rendered. 44 * @return string The content of the block being rendered. 45 */ 46 function block_core_gallery_render( $attributes, $content ) { 47 $gap = _wp_array_get( $attributes, array( 'style', 'spacing', 'blockGap' ) ); 48 // Skip if gap value contains unsupported characters. 49 // Regex for CSS value borrowed from `safecss_filter_attr`, and used here 50 // because we only want to match against the value, not the CSS attribute. 51 $gap = preg_match( '%[\\\(&=}]|/\*%', $gap ) ? null : $gap; 52 $class = wp_unique_id( 'wp-block-gallery-' ); 53 $content = preg_replace( 54 '/' . preg_quote( 'class="', '/' ) . '/', 55 'class="' . $class . ' ', 56 $content, 57 1 58 ); 59 // --gallery-block--gutter-size is deprecated. --wp--style--gallery-gap-default should be used by themes that want to set a default 60 // gap on the gallery. 61 $gap_value = $gap ? $gap : 'var( --wp--style--gallery-gap-default, var( --gallery-block--gutter-size, var( --wp--style--block-gap, 0.5em ) ) )'; 62 $style = '.' . $class . '{ --wp--style--unstable-gallery-gap: ' . $gap_value . '; gap: ' . $gap_value . '}'; 63 // Ideally styles should be loaded in the head, but blocks may be parsed 64 // after that, so loading in the footer for now. 65 // See https://core.trac.wordpress.org/ticket/53494. 66 add_action( 67 'wp_footer', 68 function () use ( $style ) { 69 echo '<style> ' . $style . '</style>'; 70 } 71 ); 72 return $content; 73 } 74 /** 75 * Registers the `core/gallery` block on server. 76 */ 77 function register_block_core_gallery() { 78 register_block_type_from_metadata( 79 __DIR__ . '/gallery', 80 array( 81 'render_callback' => 'block_core_gallery_render', 82 ) 83 ); 84 } 85 86 add_action( 'init', 'register_block_core_gallery' );
title
Description
Body
title
Description
Body
title
Description
Body
title
Body
Generated: Wed Oct 9 01:00:02 2024 | Cross-referenced by PHPXref 0.7.1 |