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Editing: tabs.php
<?php /** * Tabs Block * * @package WordPress */ /** * Extract tabs list from tab-panel innerblocks. * * @since 7.1.0 * * @param array $innerblocks Parsed inner blocks of tabs block. * @param string $tabs_id Unique ID for the tabs instance, used to generate tab IDs. * * @return array List of tab IDs. */ function block_core_tabs_generate_tabs_list( array $innerblocks = array(), string $tabs_id = '' ): array { $tabs_list = array(); // Find tab-panel block foreach ( $innerblocks as $inner_block ) { if ( 'core/tab-panels' === ( $inner_block['blockName'] ?? '' ) ) { $tab_index = 0; foreach ( $inner_block['innerBlocks'] ?? array() as $tab_block ) { if ( 'core/tab-panel' === ( $tab_block['blockName'] ?? '' ) ) { $attrs = $tab_block['attrs'] ?? array(); $tab_id = ! empty( $attrs['anchor'] ) ? $attrs['anchor'] : ( ! empty( $tabs_id ) ? $tabs_id . '-tab-' . $tab_index : 'tab-' . $tab_index ); $tabs_list[] = esc_attr( $tab_id ); ++$tab_index; } } break; } } return $tabs_list; } /** * Filter to provide tabs list context to core/tabs and core/tab-list blocks. * It is more performant to do this here, once, rather than in the tabs render and tabs context filters. * In this way core/tabs is both a provider and a consumer of the core/tabs-list context. * * @since 7.1.0 * * @param array $context Default block context. * @param array $parsed_block The block being rendered. * * @return array Modified context. */ function block_core_tabs_provide_context( array $context, array $parsed_block ): array { if ( 'core/tabs' === $parsed_block['blockName'] ) { // Generate a unique ID for the tabs instance first, so it can be used // to derive stable tab IDs. $tabs_id = $parsed_block['attrs']['anchor'] ?? wp_unique_id( 'tabs_' ); $tabs_list = block_core_tabs_generate_tabs_list( $parsed_block['innerBlocks'] ?? array(), $tabs_id ); $context['core/tabs-list'] = $tabs_list; $context['core/tabs-id'] = $tabs_id; } return $context; } add_filter( 'render_block_context', 'block_core_tabs_provide_context', 10, 2 ); /** * Render callback for core/tabs. * * @since 7.1.0 * * @param array $attributes Block attributes. * @param string $content Block content. * @param \WP_Block $block WP_Block instance. * * @return string Updated HTML. */ function block_core_tabs_render_block_callback( array $attributes, string $content, \WP_Block $block ): string { $active_tab_index = $attributes['activeTabIndex'] ?? 0; $tabs_list = $block->context['core/tabs-list'] ?? array(); $tabs_id = $block->context['core/tabs-id'] ?? null; if ( empty( $tabs_id ) ) { // If malformed tabs, return early to avoid errors. return ''; } $tag_processor = new WP_HTML_Tag_Processor( $content ); $tag_processor->next_tag( array( 'class_name' => 'wp-block-tabs' ) ); $tag_processor->set_attribute( 'data-wp-interactive', 'core/tabs' ); $tag_processor->set_attribute( 'data-wp-context', wp_json_encode( array( 'tabsId' => $tabs_id, 'activeTabIndex' => $active_tab_index, ) ) ); $tag_processor->set_attribute( 'data-wp-init', 'callbacks.onTabsInit' ); $tag_processor->set_attribute( 'data-wp-on--keydown', 'actions.handleTabKeyDown' ); $output = $tag_processor->get_updated_html(); /** * Builds a client side state for just this tabs instance, so each * core/tabs block manages its own state, like context. */ wp_interactivity_state( 'core/tabs', array( $tabs_id => $tabs_list, ) ); return $output; } /** * Registers the `core/tabs` block on the server. * * @since 7.1.0 */ function register_block_core_tabs() { register_block_type_from_metadata( __DIR__ . '/tabs', array( 'render_callback' => 'block_core_tabs_render_block_callback', ) ); } add_action( 'init', 'register_block_core_tabs' );
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