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<?php |
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/** |
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* Block bindings additions for WordPress 7.1. |
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* |
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* @since 7.1.0 |
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* @package gutenberg |
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* @subpackage Block Bindings |
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*/ |
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|
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// The following filter can be removed once the minimum required WordPress version is 7.1 or newer. |
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add_filter( |
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'block_bindings_supported_attributes', |
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function ( $attributes, $block_type ) { |
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if ( 'core/list-item' === $block_type && ! in_array( 'content', $attributes, true ) ) { |
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$attributes[] = 'content'; |
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} |
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return $attributes; |
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}, |
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10, |
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2 |
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); |
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|
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/* |
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* On WordPress versions before 7.1, `WP_Block::replace_html()` lacks the |
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* inner-blocks fix (wordpress-develop#12113), so binding a List Item's content |
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* replaces the whole `<li>` and drops the nested List rendered inside it. Core |
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* still has the inner blocks on the instance, so re-append them after the |
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* binding has been applied. |
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* |
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* This can be removed once the minimum required WordPress version is 7.1. |
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*/ |
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|
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/** |
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* Returns whether the list item metadata declares a content binding. |
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* |
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* @since 7.1.0 |
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* |
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* @param mixed $metadata Block metadata attribute. |
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* @return bool Whether a content binding (direct or via pattern overrides) is present. |
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*/ |
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function gutenberg_list_item_metadata_has_content_binding( $metadata ) { |
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if ( empty( $metadata['bindings'] ) || ! is_array( $metadata['bindings'] ) ) { |
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return false; |
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} |
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|
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$bindings = $metadata['bindings']; |
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return isset( $bindings['content'] ) || |
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( |
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isset( $bindings['__default']['source'] ) && |
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'core/pattern-overrides' === $bindings['__default']['source'] |
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); |
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} |
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|
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/** |
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* Restores the nested inner blocks dropped when binding a List Item's content. |
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* |
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* Core replaces the whole `<li>` when it applies the rich-text binding, removing |
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* the nested List. The inner blocks are still available on the instance, so they |
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* are rendered again and re-appended before the closing `</li>`. |
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* |
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* @since 7.1.0 |
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* |
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* @param string $block_content The rendered block content. |
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* @param array $parsed_block The parsed block. |
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* @param WP_Block $instance The block instance. |
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* @return string The block content with the nested inner blocks restored. |
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*/ |
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function gutenberg_restore_list_item_inner_blocks_after_binding( $block_content, $parsed_block, $instance ) { |
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if ( 'core/list-item' !== ( $parsed_block['blockName'] ?? null ) ) { |
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return $block_content; |
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} |
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|
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if ( ! $instance instanceof WP_Block || empty( $instance->inner_blocks ) ) { |
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return $block_content; |
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} |
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|
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if ( ! gutenberg_list_item_metadata_has_content_binding( $instance->parsed_block['attrs']['metadata'] ?? null ) ) { |
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return $block_content; |
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} |
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|
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$inner_blocks_html = ''; |
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foreach ( $instance->inner_blocks as $inner_block ) { |
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$inner_blocks_html .= $inner_block->render(); |
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} |
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|
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/* |
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* Nothing to restore when the inner blocks did not render, or when they are |
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* still present because Core already preserves them (the fix is in place). |
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*/ |
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if ( '' === $inner_blocks_html || str_contains( $block_content, $inner_blocks_html ) ) { |
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return $block_content; |
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} |
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|
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$closer_position = strripos( $block_content, '</li>' ); |
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if ( false === $closer_position ) { |
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return $block_content; |
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} |
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|
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return substr( $block_content, 0, $closer_position ) . $inner_blocks_html . substr( $block_content, $closer_position ); |
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} |
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add_filter( 'render_block', 'gutenberg_restore_list_item_inner_blocks_after_binding', 10, 3 ); |
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|
