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<?php |
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/** |
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* Tab Block |
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* |
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* @package WordPress |
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*/ |
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|
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/** |
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* Render callback for core/tab. |
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* |
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* Injects the tab label and IAPI directives into the saved button HTML. |
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* Per-item context (index, id, label) is provided by the parent tab-list |
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* render callback before this is called. |
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* |
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* @since 7.0.0 |
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* |
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* @param array $attributes Block attributes. |
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* @param string $content Block content (styled button from save.js). |
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* @param \WP_Block $block WP_Block instance. |
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* |
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* @return string Updated HTML. |
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*/ |
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function gutenberg_block_core_tab_render_callback( array $attributes, string $content, \WP_Block $block ): string { |
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$tab_index = $block->context['core/tab-index'] ?? 0; |
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$tab_id = $block->context['core/tab-id'] ?? ''; |
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$tab_label = $block->context['core/tab-label'] ?? ''; |
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|
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if ( empty( $tab_id ) ) { |
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$tab_id = 'tab-' . $tab_index; |
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} |
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|
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// Add Interactivity API directives and tab-specific attributes to the button. |
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$tag_processor = new WP_HTML_Tag_Processor( $content ); |
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|
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if ( $tag_processor->next_tag() ) { |
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$tag_processor->set_attribute( 'id', 'tab__' . $tab_id ); |
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$tag_processor->set_attribute( 'aria-controls', $tab_id ); |
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$tag_processor->set_attribute( 'data-wp-on--click', 'actions.handleTabClick' ); |
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$tag_processor->set_attribute( 'data-wp-on--keydown', 'actions.handleTabKeyDown' ); |
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$tag_processor->set_attribute( 'data-wp-bind--aria-selected', 'state.isActiveTab' ); |
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$tag_processor->set_attribute( 'data-wp-bind--tabindex', 'state.tabIndexAttribute' ); |
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$tag_processor->set_attribute( |
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'data-wp-context', |
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wp_json_encode( array( 'tabIndex' => $tab_index ) ) |
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); |
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} |
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|
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// Inject the tab label into the button. |
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return preg_replace( |
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'/(<button\b[^>]*>).*?(<\/button>)/s', |
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'$1<span>' . wp_kses_post( $tab_label ) . '</span>$2', |
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$tag_processor->get_updated_html(), |
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1 |
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); |
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} |
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|
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/** |
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* Registers the `core/tab` block on the server. |
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* |
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* @since 7.0.0 |
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*/ |
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function gutenberg_register_block_core_tab() { |
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register_block_type_from_metadata( |
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__DIR__ . '/tab', |
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array( |
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'render_callback' => 'gutenberg_block_core_tab_render_callback', |
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) |
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); |
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} |
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add_action( 'init', 'gutenberg_register_block_core_tab', 20 ); |
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|
