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<?php
/**
* Tab Panel Block
*
* @package WordPress
*/
/**
* Render callback for core/tab-panel.
*
* @since 7.1.0
*
* @param array $attributes Block attributes.
* @param string $content Block content.
* @param \WP_Block $block Block instance.
*
* @return string Updated HTML.
*/
function block_core_tab_panel_render( array $attributes, string $content, \WP_Block $block ): string {
$tabs_id = $block->context['core/tabs-id'] ?? '';
static $tab_counters = array();
if ( ! isset( $tab_counters[ $tabs_id ] ) ) {
$tab_counters[ $tabs_id ] = 0;
}
$tab_index = $tab_counters[ $tabs_id ];
++$tab_counters[ $tabs_id ];
$tag_processor = new WP_HTML_Tag_Processor( $content );
$tag_processor->next_tag( array( 'class_name' => 'wp-block-tab-panel' ) );
// Use the user's custom anchor if present, otherwise fall back to
// the generated position-based ID.
$tab_id = (string) $tag_processor->get_attribute( 'id' );
if ( empty( $tab_id ) ) {
$tab_id = ! empty( $tabs_id )
? $tabs_id . '-tab-' . $tab_index
: 'tab-' . $tab_index;
$tag_processor->set_attribute( 'id', $tab_id );
}
$tag_processor->set_attribute( 'aria-labelledby', 'tab__' . $tab_id );
$tag_processor->set_attribute( 'data-wp-bind--hidden', '!state.isActiveTab' );
return (string) $tag_processor->get_updated_html();
}
/**
* Registers the `core/tab-panel` block on the server.
*
* @hook init
*
* @since 7.1.0
*/
function register_block_core_tab_panel() {
register_block_type_from_metadata(
__DIR__ . '/tab-panel',
array(
'render_callback' => 'block_core_tab_panel_render',
)
);
}
add_action( 'init', 'register_block_core_tab_panel' );