first commit

wp-includes/blocks/accordion-item.php

@@ -0,0 +1,75 @@
+<?php
+
+/**
+ * Server-side rendering of the `core/accordion-item` block.
+ *
+ * @package WordPress
+ * @since 6.9.0
+ *
+ * @param array $attributes The block attributes.
+ * @param string $content The block content.
+ *
+ * @return string Returns the updated markup.
+ */
+function block_core_accordion_item_render( $attributes, $content ) {
+	if ( ! $content ) {
+		return $content;
+	}
+
+	$p         = new WP_HTML_Tag_Processor( $content );
+	$unique_id = wp_unique_id( 'accordion-item-' );
+
+	// Initialize the state of the item on the server using a closure,
+	// since we need to get derived state based on the current context.
+	wp_interactivity_state(
+		'core/accordion',
+		array(
+			'isOpen' => function () {
+				$context = wp_interactivity_get_context();
+				return $context['openByDefault'];
+			},
+		)
+	);
+
+	if ( $p->next_tag( array( 'class_name' => 'wp-block-accordion-item' ) ) ) {
+		$open_by_default = $attributes['openByDefault'] ? 'true' : 'false';
+		$p->set_attribute( 'data-wp-context', '{ "id": "' . $unique_id . '", "openByDefault": ' . $open_by_default . ' }' );
+		$p->set_attribute( 'data-wp-class--is-open', 'state.isOpen' );
+		$p->set_attribute( 'data-wp-init', 'callbacks.initAccordionItems' );
+		$p->set_attribute( 'data-wp-on-window--hashchange', 'callbacks.hashChange' );
+
+		if ( $p->next_tag( array( 'class_name' => 'wp-block-accordion-heading__toggle' ) ) ) {
+			$p->set_attribute( 'data-wp-on--click', 'actions.toggle' );
+			$p->set_attribute( 'data-wp-on--keydown', 'actions.handleKeyDown' );
+			$p->set_attribute( 'id', $unique_id );
+			$p->set_attribute( 'aria-controls', $unique_id . '-panel' );
+			$p->set_attribute( 'data-wp-bind--aria-expanded', 'state.isOpen' );
+
+			if ( $p->next_tag( array( 'class_name' => 'wp-block-accordion-panel' ) ) ) {
+				$p->set_attribute( 'id', $unique_id . '-panel' );
+				$p->set_attribute( 'aria-labelledby', $unique_id );
+				$p->set_attribute( 'data-wp-bind--inert', '!state.isOpen' );
+
+				// Only modify content if all directives have been set.
+				$content = $p->get_updated_html();
+			}
+		}
+	}
+
+	return $content;
+}
+
+/**
+ * Registers the `core/accordion-item` block on server.
+ *
+ * @since 6.9.0
+ */
+function register_block_core_accordion_item() {
+	register_block_type_from_metadata(
+		__DIR__ . '/accordion-item',
+		array(
+			'render_callback' => 'block_core_accordion_item_render',
+		)
+	);
+}
+add_action( 'init', 'register_block_core_accordion_item' );